cometadata/datacite-rtg-text-other-reclassification-records huggingface dataset:
Multiplicity fluctuations of identified hadrons in p+p interactions at SPS energies
Creators: name: Maćkowiak-Pawłowska, Maja
name: Wilczek, Andrzej
Publisher: name: arXiv
Year: 2014
Subjects: subject: High Energy Physics - Experiment (hep-ex)
subject: Nuclear Experiment (nucl-ex)
subject: FOS: Physical sciences

description: Study of energy and system size fluctuations of identified hadrons is one of the key goals of NA61/SHINE at the CERN SPS. Results may allow to discover the critical point (CP) of strongly interacting matter as well as to uncover properties of the onset of deconfinement (OD). But fluctuations exhibit numerous other sources starting from most basic ones like volume effects and conservation laws. NA49 seems to observe fluctuations related to CP in collisions of medium size nuclei at top SPS energy. However, this result will remain inconclusive until systematic data on energy and system size dependence will be available. Moreover, fluctuations in p+p as well as in Pb+Pb interactions should be better understood. In this contribution results on multiplicity fluctuations of identified hadrons in p+p interactions at the CERN SPS energies will be presented. The NA61 data will be compared with the corresponding results from central Pb+Pb collisions of NA49 in the common acceptance region of both experiments. Moreover, predictions of models (EPOS, UrQMD and HSD) for both reactions will be tested.
description: 4 pages, 3 figures, Proceedings of the Strangeness in Quark Matter Conference (SQM 2013), 22nd - 27th July 2013, accepted by the Open Access Journal of Physics: Conference Series (JPCS), in the IOP conference series
Radix Conversion for IEEE754-2008 Mixed Radix Floating-Point Arithmetic
Creators: name: Kupriianova, O.
name: Lauter, Ch.
name: Muller, J. -M.
Publisher: name: arXiv
Year: 2013
Subjects: subject: Mathematical Software (cs.MS)
subject: FOS: Computer and information sciences

description: Conversion between binary and decimal floating-point representations is ubiquitous. Floating-point radix conversion means converting both the exponent and the mantissa. We develop an atomic operation for FP radix conversion with simple straight-line algorithm, suitable for hardware design. Exponent conversion is performed with a small multiplication and a lookup table. It yields the correct result without error. Mantissa conversion uses a few multiplications and a small lookup table that is shared amongst all types of conversions. The accuracy changes by adjusting the computing precision.
Substellar Objects in Nearby Young Clusters (SONYC) VIII: Substellar population in Lupus 3
Creators: name: Muzic, Koraljka
name: Scholz, Alexander
name: Geers, Vincent C.
name: Jayawardhana, Ray
name: Marti, Belen Lopez
Publisher: name: arXiv
Year: 2014
Subjects: subject: Astrophysics of Galaxies (astro-ph.GA)
subject: Solar and Stellar Astrophysics (astro-ph.SR)
subject: FOS: Physical sciences

description: SONYC -- Substellar Objects in Nearby Young Clusters -- is a survey program to investigate the frequency and properties of substellar objects in nearby star-forming regions. We present a new imaging and spectroscopic survey conducted in the young (~1 Myr), nearby (~200 pc) star-forming region Lupus 3. Deep optical and near-infrared images were obtained with MOSAIC-II and NEWFIRM at the CTIO-4m telescope, covering ~1.4 sqdeg on the sky. The i-band completeness limit of 20.3 mag is equivalent to 0.009-0.02 MSun, for Av \leq 5. Photometry and 11-12 yr baseline proper motions were used to select candidate low-mass members of Lupus 3. We performed spectroscopic follow-up of 123 candidates, using VIMOS at the Very Large Telescope (VLT), and identify 7 probable members, among which 4 have spectral type later than M6.0 and Teff \leq 3000K, i.e. are probably substellar in nature. Two of the new probable members of Lupus 3 appear underluminous for their spectral class and exhibit emission line spectrum with strong Halpha or forbidden lines associated with active accretion. We derive a relation between the spectral type and effective temperature: Teff=(4120 +- 175) - (172 +- 26) x SpT, where SpT refers to the M spectral subtype between 1 and 9. Combining our results with the previous works on Lupus 3, we show that the spectral type distribution is consistent with that in other star forming regions, as well as is the derived star-to-BD ratio of 2.0-3.3. We compile a census of all spectroscopically confirmed low-mass members with spectral type M0 or later.
description: Accepted by Astrophysical Journal
Human Resources in the Ozarks Region, With Emphasis on the Poor
Creators: name: Hoover, Herbert
name: Green, Bernal L.
name: Hoover, Herbert
name: Green, Bernal L.
Publisher: name: Unknown
Year: 1970
Subjects: subject: Community/Rural/Urban Development
subject: Consumer/Household Economics
subject: Food Security and Poverty
subject: Labor and Human Capital
subject: Poverty
subject: human resources
subject: income
subject: education
subject: employment
subject: Ozarks region
subject: rural areas
subject: tabular analysis
subject: primary survey
subject: cross-sectional

description: This report is one in a series on the socioeconomic condition of rural people within selected areas of the United States. The rural parts of the Ozarks region of Arkansas, Missouri, and Oklahoma comprise the study area for this report, and 1,413 sample household heads provided information. Of these households, 25 percent were found to be economically deprived or seriously deprived. Another 28 percent were classified as marginal. Thus, current public and private efforts to improve economic welfare of Ozarks residents seems warranted on the basis of these data. However, efforts to improve income through rural industrialization may not be fully effective because advanced age is a fact for one-third to one-half of the household heads. These persons are at a disadvantage compared with younger in-migrants, for example, in competing for new jobs. Other disadvantages found in the region were that most deprived families had at least two clearly poverty-linked characteristics: advanced age, female head of household, low educational attainment, farm residence, and physical disabilities. Having any one of these characteristics tended to make a family deprived, and the more of them a family had, the more deprived it was.
Hubble Space Telescope detection of the double pulsar system J0737-3039 in the far-ultraviolet
Creators: name: Durant, Martin
name: Kargaltsev, Oleg
name: Pavlov, George G
Publisher: name: arXiv
Year: 2014
Subjects: subject: High Energy Astrophysical Phenomena (astro-ph.HE)
subject: FOS: Physical sciences

description: We report on detection of the double pulsar system J0737-3039 in the far-UV with the ACS/SBC detector aboard HST. We measured the energy flux F = 4.5+/-1.0e-17 erg cm-2s-1 in the 1250-1550 AA band, which corresponds to the extinction-corrected luminosity L~1.5e28 erg s-1 for the distance d=1.1 kpc and a plausible reddening E(B-V)=0.1. If the detected emission comes from the entire surface of one of the neutron stars with a 13 km radius, the surface blackbody temperature is in the range T~2-5e5 K for a reasonable range of interstellar extinction. Such a temperature requires an internal heating mechanism to operate in old neutron stars, or it might be explained by heating of the surface of the less energetic Pulsar B by the relativistic wind of Pulsar A. If the far-UV emission is non-thermal (e.g., produced in the magnetosphere of Pulsar A), its spectrum exhibits a break between the UV and X-rays.
description: 13 pages, 3 figures; submitted to ApJ-L
Microstrip Coupler Design Using Bat Algorithm
Creators: name: Ulker, Ezgi Deniz
name: Ulker, Sadik
Publisher: name: arXiv
Year: 2014
Subjects: subject: Neural and Evolutionary Computing (cs.NE)
subject: FOS: Computer and information sciences

description: Evolutionary and swarm algorithms have found many applications in design problems since todays computing power enables these algorithms to find solutions to complicated design problems very fast. Newly proposed hybrid algorithm, bat algorithm, has been applied for the design of microwave microstrip couplers for the first time. Simulation results indicate that the bat algorithm is a very fast algorithm and it produces very reliable results.
description: 7 pages, 4 figures, 1 table
The role of Ambidextrous Leadership in developing Team-Level Ambidexterity: Exploring the supporting roles of Reflective Conversations and Ambidextrous HRM
Creators: name: Alo, Obinna
Publisher: name: AfricArXiv
Year: 2022
Subjects: subject: 150399 Business and Management not elsewhere classified
subject: FOS: Economics and business
subject: 150305 Human Resources Management

description: Version Accepted author manuscript Abstract This study highlights how constructs of importance to management in Africa – ambidextrous leadership and team learning – can extend or modify our existing management theories. Adopting an exploratory design with an interpretive philosophy, this study explores how supermarket store managers engage their subordinates in team learning sessions to enable their collective ambidexterity, facilitated by the presence of reflective conversations (RC) and ambidextrous human resource management (HRM) policies and practices. Based on our raw data, we develop a process-based model that shows how ambidextrous leadership behaviours can help develop team-level ambidexterity, including the supporting roles of RC and ambidextrous HRM practices in the process. This model thus seeks to motivate theoretically the future ambidexterity research in Africa, as the theoretical ideas and themes in this study can be replicated and be broadly applied to future ambidexterity research in the continent. This model will, therefore, contribute to the theoretical development of the African management literature and, accordingly, adds a significant value to the mainstream ambidexterity literature.
A cautionary note on robust covariance plug-in methods
Creators: name: Nordhausen, Klaus
name: Tyler, David E.
Publisher: name: arXiv
Year: 2014
Subjects: subject: Methodology (stat.ME)
subject: FOS: Computer and information sciences

description: Many multivariate statistical methods rely heavily on the sample covariance matrix. It is well known though that the sample covariance matrix is highly non-robust. One popular alternative approach for "robustifying" the multivariate method is to simply replace the role of the covariance matrix with some robust scatter matrix. The aim of this paper is to point out that in some situations certain properties of the covariance matrix are needed for the corresponding robust "plug-in" method to be a valid approach, and that not all scatter matrices necessarily possess these important properties. In particular, the following three multivariate methods are discussed in this paper: independent components analysis, observational regression and graphical modeling. For each case, it is shown that using a symmetrized robust scatter matrix in place of the covariance matrix results in a proper robust multivariate method.
description: 24 pages, 7 figures
Depletion effects in colloid-polymer solutions
Creators: name: D'Adamo, Giuseppe
name: Pelissetto, Andrea
name: Pierleoni, Carlo
Publisher: name: arXiv
Year: 2014
Subjects: subject: Soft Condensed Matter (cond-mat.soft)
subject: FOS: Physical sciences

description: The surface tension, the adsorption, and the depletion thickness of polymers close to a single nonadsorbing colloidal sphere are computed by means of Monte Carlo simulations. We consider polymers under good-solvent conditions and in the thermal crossover region between good-solvent and $θ$ behavior. In the dilute regime we consider a wide range of values of $q$, from $q = 0$ (planar surface) up to $q\approx 30$-50, while in the semidilute regime, for $ρ_p/ρ_p^*\le 4$ ($ρ_p$ is the polymer concentration and $ρ_p^*$ is its value at overlap), we only consider $q = 0,0.5,1$ and 2. The results are compared with the available theoretical predictions, verifying the existing scaling arguments. Field-theoretical results, both in the dilute and in the semidilute regime, are in good agreement with the numerical estimates for polymers under good-solvent conditions.
description: 26 pages, 12 figures
Focus for Area Development Analysis: Urban Orientation of Counties
Creators: name: Bluestone, Herman
name: Bluestone, Herman
Publisher: name: Unknown
Year: 1970
Subjects: subject: Community/Rural/Urban Development
subject: Labor and Human Capital
subject: Land Economics/Use
subject: Urban orientation
subject: economic growth and development
subject: county delineation
subject: economic space
subject: county analysis
subject: two-dimensional classification

description: The orientation of counties to metropolitan systems and urban centers is identified by population density and percentage of population urban. This analytical framework differentiates six kinds of counties, ranging from most urban-oriented, group 1, to least urban-oriented, group 6. With this framework, it can be seen that the economic well-being of county residents varies with the urban orientation of their county. Between 1950 and 1960, county population growth also varied with urban orientation. But in the following 6 years (1960-66), population growth slowed considerably in group 1 counties and moderately in groups 2 and 3, but accelerated in groups 4 and 5. In group 6, the decline was arrested. The quickening growth in the less urban-oriented counties promises to help bring prosperity to many areas that were formerly cut off from the mainstream of American economic life. But many of the people who live in these areas are elderly and disabled or lack the education, training, and experience to compete effectively in urban labor markets. Consequently, these people would benefit from training programs and other programs to improve their nutrition, health care, and education.
A concurrent precursor inflow method for Large Eddy Simulations and applications to finite length wind farms
Creators: name: Stevens, Richard J. A. M.
name: Graham, Jason
name: Meneveau, Charles
Publisher: name: arXiv
Year: 2014
Subjects: subject: Fluid Dynamics (physics.flu-dyn)
subject: FOS: Physical sciences

description: In order to enable simulations of developing wind turbine array boundary layers with highly realistic inflow conditions a concurrent precursor method for Large Eddy Simulations is proposed. In this method we consider two domains simultaneously, i.e. in one domain a turbulent Atmospheric Boundary Layer (ABL) without wind turbines is simulated in order to generate the turbulent inflow conditions for a second domain in which the wind turbines are placed. The benefit of this approach is that a) it avoids the need for large databases in which the turbulent inflow conditions are stored and the correspondingly slow I/O operations and b) we are sure that the simulations are not negatively affected by statically swept fixed inflow fields or synthetic fields lacking the proper ABL coherent structures. Sample applications are presented, in which, in agreement with field data a strong decrease of the power output of downstream wind-turbines with respect to the first row of wind-turbines is observed for perfectly aligned inflow.
description: 13 pages, 5 figures
In search of goals: increasing ice hockey’s attractiveness by a sides swap
Creators: name: Friesl, Michal
name: Lenten, Liam
name: Libich, Jan
name: Stehlík, Petr
Publisher: name: La Trobe
Year: 2023
Subjects: classificationCode: 35
subject: Commerce, management, tourism and services
classificationCode: 49
subject: Mathematical sciences
classificationCode: 46
subject: Information and computing sciences

description: No description supplied.
Characteristics of New Borrowers Obtaining Farm Ownership Loans from the Farmers Home Administration, Fiscal 1966
Creators: name: Herr, William McD.
name: Herr, William McD.
Publisher: name: Unknown
Year: 1970
Subjects: subject: Agricultural and Food Policy
subject: Financial Economics
subject: Farm ownership loans of Farmers Home Administration
subject: Financing low income farmers

description: The characteristics of those obtaining farm ownership loans from the Farmers Home Administration did not change much after the loan program began to expand in 1962. FO borrowers, as before, were more likely to be tenants, to be younger, and to have smaller farm businesses and lower equities than farmers as a whole. Nevertheless, they were not those least likely to develop viable farms. FO loans mainly went to refinance debts or buy farms in the North and West. In the South loans went mainly for enlarging farms but refinancing debts was also important.
Spin-Orbit Coupled Bose Gases at Finite Temperatures
Creators: name: Liao, Renyuan
name: Fialko, Oleksandr
Publisher: name: arXiv
Year: 2014
Subjects: subject: Quantum Gases (cond-mat.quant-gas)
subject: FOS: Physical sciences

description: Spin-orbit coupling is predicted to have dramatic effects on thermal properties of a two-component atomic Bose gas. We show that in three spatial dimensions it lowers the critical temperature of condensation and enhances thermal depletion of the condensate fraction. In two dimensions we show that spin-orbit coupling destroys superfluidity at any finite temperature, modifying dramatically the cerebrated Berezinskii-Kosterlitz-Thouless scenario. We explain this by the increase of the number of low energy states induced by spin-orbit coupling, enhancing the role of quantum fluctuations.
description: 5 pages, 2 figures
Upgrading Era Reinforced Concrete Bridge Girder Using U-Shaped Steel Plate Jacketing
Creators: name: Wosen  Hirpa
Publisher: name: National Academic Digital Repository of Ethiopia
Year: 2021
Subjects: Strengthening, Steel Jacketing, Ductility, finite element analyses FEA, ANSYS simulation

description: Strengthening Reinforced Concrete (RC) girder/beams are required due to design errors, deficient concrete production, bad execution processes, damage due to earthquake, accidents such as collisions, fire, explosions, and situations involving changes in the functionality of the structure. This study presents numerical investigation of as built and U-shaped strengthened 8 girders of size 12.6m span and 400 mm x 780 mm cross sections subjected to monotonic loading. The girders were reproduced from ERA Bridge Manual. Also, experimental result reported in literature was used for validation analysis to verify accuracy of developed ANSYS finite element models. U-shaped strengthening with four different material options such as Rebar Steel/Carbon Steel, Alloy Steel, Mild steel, and Stainless Steel; and two different strengthening material thickness parameters were studied. FE results showed U-shaped strengthening offered excellent improvement in strength and ductility. As compared to control, U-shaped strengthening resulted in 46.5% and 34.1% increase in ultimate load-carrying capacity of a girder for 8mm and 4mm retrofitting material thickness respectively. Also, the maximum stress intensity gain is reported as 34.1% for 8mm thickness plates and 31.4% for 4mm thick plates.
A survey of infrared supernova remnants in the Large Magellanic Cloud
Creators: name: Seok, Ji Yeon
name: Koo, Bon-Chul
name: Onaka, Takashi
Publisher: name: arXiv
Year: 2013
Subjects: subject: High Energy Astrophysical Phenomena (astro-ph.HE)
subject: Astrophysics of Galaxies (astro-ph.GA)
subject: Solar and Stellar Astrophysics (astro-ph.SR)
subject: FOS: Physical sciences

description: We present a comprehensive infrared study of supernova remnants (SNRs) in the Large Magellanic Cloud (LMC) using near- to mid-infrared images taken by Infrared Array Camera (IRAC; 3.6, 4.5, 5.8, and 8 μm) and Multiband Imaging Photometer (MIPS; 24 and 70 μm) onboard the Spitzer Space Telescope. Among the 47 bona fide LMC SNRs, 29 were detected in infrared, giving a high detection rate of 62%. All 29 SNRs show emission at 24 μm, and 20 out of 29 show emission in one or several IRAC bands. We present their 4.5, 8, 24, and 70 μm images and a table summarizing their Spitzer fluxes. We find that the LMC SNRs are considerably fainter than the Galactic SNRs, and that, among the LMC SNRs, Type Ia SNRs are significantly fainter than core-collapse SNRs. We conclude that the MIPS emission of essentially all SNRs origi- nates from dust emission, whereas their IRAC emissions originate from ionic/molecular lines, polycyclic aromatic hydrocarbons emission, or synchrotron emission. The infrared fluxes show correlation with radio and X-ray fluxes. For SNRs that have similar mor- phology in infrared and X-rays, the ratios of 24 to 70 μm fluxes have good correlation with the electron density of hot plasma. The overall correlation is explained well by the emission from collisionally-heated silicate grains of 0.1 μm size, but for mature SNRs with relatively low gas temperatures, the smaller-sized grain population is favored more. For those that appear different between infrared and X-rays, the emission in the MIPS bands is probably from dust heated by shock radiation.
description: 64 pages, 19 figures, 5 tables. Accepted for publication in ApJ. Typos corrected
Dietary and Lifestyle Risk Factors of Obesity among Young Adults: A Mixed-Method Study among Tertiary Students
Creators: name: LEE, KE XIN
Publisher: name: Monash University
Year: 2023
Subjects: classificationCode: 321005
subject: Public health nutrition

description: This thesis explores the dietary and lifestyle risk factors associated with obesity among young adults, particularly tertiary students. The study utilizes mixed-methods, including an online survey and focus group discussions. The results indicate that dietary restraint , low vegetables intake and increased screen time are major risk factors for obesity in this population. The findings highlight the need for interventions that promote healthy eating behavior and active lifestyle among young adults to prevent obesity and its associated health risks. Overall, this study provides valuable insights for public health policies aimed at reducing obesity prevalence among young adults.
Propensity for Change Among the Rural Poor in the Mississippi Delta: A Study of the Roots of Social Mobility
Creators: name: Bryan, C. Hobson
name: Bertrand, Alvin Lee
name: Bryan, C. Hobson
name: Bertrand, Alvin Lee
Publisher: name: Unknown
Year: 1970
Subjects: subject: Community/Rural/Urban Development
subject: Labor and Human Capital
subject: Research Methods/ Statistical Methods
subject: Social participation
subject: social mobility
subject: rural
subject: poverty
subject: economic development
subject: low-income people
subject: occupational aspiration,
subject: occupational mobility
subject: values
subject: employment

description: This study determines the characteristics of poor family heads in rural areas of the Mississippi Delta Region who have high potential for breaking out of poverty. Potential for moving out of poverty was measured by the degree of expressed willingness of a household head to take action for positive change in his circumstances. The data were obtained from a randomized, block sample of rural inhabitants in the Delta areas of Arkansas, Missouri, Mississippi, and Louisiana. The 1,249 respondents constituted an approximate 1 percent sample of the region. Household heads with high propensity for change tended to be in the younger age groups, married, heads of smaller households, Negro, and have a comparatively high level of education. Generally similar factors influence change potential among the relatively affluent in the Delta. Lower rates of social participation and higher rates of fatalism were found to characterize the rural Impoverished when they were compared with the relatively affluent individuals in the Delta. However, contrary to prevailing assumptions, neither of these characteristics was related to propensity for change. Thus, social participation and fatalism variables in no way affect individuals’ potential for upward social mobility.
FAIR data, data stewardship and research data management under the umbrella of UM open science
Creators: name: Ammar, Ammar
Publisher: name: Zenodo
Year: 2022
Subjects: FAIR
data stewardship
research data management
data management plan
RDM
DMP
open science
data sharing
data archiving
data storage
data licensing
persistent Identifiers
long term storage
DOI
ORCID
citation
metadata

description: This presentation explains the different aspects of FAIR data, data stewardship (DS) and research data management (RDM) and how those topics related to the overall all endorsement of Open Science at Maastricht University (UM). Moreover, it provides a guidance for data stewards on how to support researchers in making their data FAIR and providing support in data storage, organization, archiving and sharing. Topics mentioned in the presentations: UM Open Science The FAIR principles Benefits of FAIR FAIR data stewardship Professionalizing FAIR Data Stewardship in the life sciences: defining job criteria & skills Data Stewards Competence Areas Glossary of research data definitions The Research Data Management portal at UM Data Management Plan (DMP) Data discovery and collection Data processing and sharing Data formats, structuring and organization Storage and backup Data sharing Data Publishing & Archiving Data archiving (Deposit in a repository / register in registry) Use persistent identifiers Use licenses Long term storage
Some undecidability results for asynchronous transducers and the Brin-Thompson group 2V
Creators: name: Belk, James
name: Bleak, Collin
Publisher: name: arXiv
Year: 2014
Subjects: subject: Group Theory (math.GR)
subject: Formal Languages and Automata Theory (cs.FL)
subject: Dynamical Systems (math.DS)
subject: Logic (math.LO)
subject: FOS: Mathematics
subject: FOS: Computer and information sciences
subject: 20F10 (Primary) 68Q45, 37B99, 03B25 (Secondary)

description: Using a result of Kari and Ollinger, we prove that the torsion problem for elements of the Brin-Thompson group 2V is undecidable. As a result, we show that there does not exist an algorithm to determine whether an element of the rational group R of Grigorchuk, Nekrashevich, and Sushchanskii has finite order. A modification of the construction gives other undecidability results about the dynamics of the action of elements of 2V on Cantor Space. Arzhantseva, Lafont, and Minasyanin prove in 2012 that there exists a finitely presented group with solvable word problem and unsolvable torsion problem. To our knowledge, 2V furnishes the first concrete example of such a group, and gives an example of a direct undecidability result in the extended family of R. Thompson type groups.
description: 16 pages, 3 figures
Microscopic Coexistence of Magnetism and Superconductivity in charge compensated Ba1-xKx(Fe1-yCoy)2As2
Creators: name: Goltz, Til
name: Zinth, Veronika
name: Johrendt, Dirk
name: Rosner, Helge
name: Pascua, Gwendolyne
name: Luetkens, Hubertus
name: Materne, Philipp
name: Klauss, Hans-Henning
Publisher: name: arXiv
Year: 2014
Subjects: subject: Superconductivity (cond-mat.supr-con)
subject: FOS: Physical sciences

description: We present a detailed investigation of the electronic phase diagram of effectively charge compensated Ba1-xKx(Fe1-yCoy)2As2 with x/2 = y. Our experimental study by means of x-ray diffraction, Mössbauer spectroscopy, muon spin relaxation and ac susceptibility measurements on polycrystalline samples is complemented by density functional electronic structure calculations. For low substitution levels of x/2 = y \< 0.13, the system displays an orthorhombically distorted and antiferromagnetically ordered ground state. The low temperature structural and magnetic order parameters are successively reduced with increasing substitution level. We observe a linear relationship between the structural and the magnetic order parameter as a function of temperature and substitution level for x/2 = y \< 0.13. At intermediate substitution levels in the range between 0.13 and 0.19, we find superconductivity with a maximum Tc of 15 K coexisting with static magnetic order on a microscopic length scale. For higher substitution levels x/2 = y \> 0.25 a tetragonal non-magnetic ground state is observed. Our DFT calculations yield a signifcant reduction of the Fe 3d density of states at the Fermi energy and a strong suppression of the ordered magnetic moment in excellent agreement with experimental results. The appearance of superconductivity within the antiferromagnetic state can by explained by the introduction of disorder due to non-magnetic impurities to a system with a constant charge carrier density. Our experimental study by means of x-ray diffraction, Mössbauer spectroscopy, muon spin relaxation and ac susceptibility measurements on polycrystalline samples is complemented by density functional electronic structure calculations.
description: 16 pages, 14 figures
Heavy elements in Globular Clusters: the role of AGB stars
Creators: name: Straniero, Oscar
name: Cristallo, Sergio
name: Piersanti, Luciano
Publisher: name: arXiv
Year: 2014
Subjects: subject: Astrophysics of Galaxies (astro-ph.GA)
subject: Solar and Stellar Astrophysics (astro-ph.SR)
subject: FOS: Physical sciences

description: Recent observations of heavy elements in Globular Clusters reveal intriguing deviations from the standard paradigm of the early galactic nucleosynthesis. If the r-process contamination is a common feature of halo stars, s-process enhancements are found in a few Globular Clusters only. We show that the combined pollution of AGB stars with mass ranging between 3 to 6 M$_\odot$ may account for most of the features of the s-process overabundance in M4 and M22. In these stars, the s process is a mixture of two different neutron-capture nucleosynthesis episodes. The first is due to the 13C(a,n)16O reaction and takes place during the interpulse periods. The second is due to the 22Ne(a,n)25Mg reaction and takes place in the convective zones generated by thermal pulses. The production of the heaviest s elements (from Ba to Pb) requires the first neutron burst, while the second produces large overabundances of light s (Sr, Y, Zr). The first mainly operates in the less-massive AGB stars, while the second dominates in the more-massive. From the heavy-s/light-s ratio, we derive that the pollution phase should last for $150\pm 50$ Myr, a period short enough compared to the formation timescale of the Globular Cluster system, but long enough to explain why the s-process pollution is observed in a few cases only. With few exceptions, our theoretical prediction provides a reasonable reproduction of the observed s-process abundances, from Sr to Hf. However, Ce is probably underproduced by our models, while Rb and Pb are overproduced. Possible solutions are discussed.
description: Accepted by the ApJ
Effects of Climate Change on Local Economic Development in Ghana, and Resilience Measures to Promote Sustainable Rural Development
Creators: name: Essuman, Bismark
Publisher: name: AfricArXiv
Year: 2023
Subjects: subject: 40104 Climate Change Processes
subject: FOS: Earth and related environmental sciences
subject: 70108 Sustainable Agricultural Development
subject: FOS: Other agricultural sciences
subject: 160804 Rural Sociology
subject: FOS: Sociology
subject: 70106 Farm Management, Rural Management and Agribusiness
subject: 140202 Economic Development and Growth
subject: FOS: Economics and business

description: According to the Ghana Meteorological Agency, historical climatic data from 1960 to 2000 show a consistent and obvious rise in temperature and a corresponding decline in rainfall across all biological zones. Rainfall in the Semi-Deciduous Forest zone is anticipated to increase by 2.8%, 10.9%, and 18.6%, respectively, in 2020, 2050, and 2080. These figures and estimates are concerning given Ghana's population of 31.07 million, with agriculture employing around 52% of the labor force, services employing 29%, and industry employing 19%. Women account for around 39% of the agricultural labor force. Agriculture accounts for 54% of Ghana's GDP, more than 40% of export revenues, and more than 90% of the country's food needs. These initiatives highlight agriculture's significant contribution to national and local economic development. Agriculture is the backbone of most rural economies in Ghana; thus, these data and projections are concerning, given the rise in temperature and decrease in rainfall, which would impede most agricultural activity in rural areas. Climate change poses a threat to national development, necessitating the development of a resilience strategy to mitigate its effects. Because local economic development is a crucial part of forward-thinking local growth, climate change has an impact on it. In order for local and regional governments to effectively respond to the most urgent demands of the local community, local economic development is a crucial duty of local government. More than merely economic growth, local economic development also requires fostering participation and community dialogue and connecting people with resources. It is important to examine climate change and create resilience strategies to lessen the problems it provides in rural communities in order to increase employment and quality of life for both men and women in rural Ghana.
Strategic monetary-fiscal interactions in a downturn
Creators: name: Libich, Jan
name: Nguyen, DT
Publisher: name: La Trobe
Year: 2023
Subjects: classificationCode: 380304
subject: Microeconomic theory
classificationCode: 3803
subject: Economic theory
classificationCode: 350207
subject: International finance
classificationCode: 3802
subject: Econometrics
subject: FOS: Economics and business
classificationCode: 3801
subject: Applied economics
classificationCode: 380112
subject: Macroeconomics (incl. monetary and fiscal theory)

description: No description supplied.
Effects of Climate Change on Local Economic Development in Ghana, and Resilience Measures to Promote Sustainable Rural Development
Creators: name: Essuman, Bismark
Publisher: name: AfricArXiv
Year: 2022
Subjects: subject: 40104 Climate Change Processes
subject: FOS: Earth and related environmental sciences
subject: 70108 Sustainable Agricultural Development
subject: FOS: Other agricultural sciences
subject: 160804 Rural Sociology
subject: FOS: Sociology
subject: 70106 Farm Management, Rural Management and Agribusiness
subject: 140202 Economic Development and Growth
subject: FOS: Economics and business

description: According to the Ghana Meteorological Agency, historical climatic data from 1960 to 2000 show a consistent and obvious rise in temperature and a corresponding decline in rainfall across all biological zones. Rainfall in the Semi-Deciduous Forest zone is anticipated to increase by 2.8%, 10.9%, and 18.6%, respectively, in 2020, 2050, and 2080. These figures and estimates are concerning given Ghana's population of 31.07 million, with agriculture employing around 52% of the labor force, services employing 29%, and industry employing 19%. Women account for around 39% of the agricultural labor force. Agriculture accounts for 54% of Ghana's GDP, more than 40% of export revenues, and more than 90% of the country's food needs. These initiatives highlight agriculture's significant contribution to national and local economic development. Agriculture is the backbone of most rural economies in Ghana; thus, these data and projections are concerning, given the rise in temperature and decrease in rainfall, which would impede most agricultural activity in rural areas. Climate change poses a threat to national development, necessitating the development of a resilience strategy to mitigate its effects. Because local economic development is a crucial part of forward-thinking local growth, climate change has an impact on it. In order for local and regional governments to effectively respond to the most urgent demands of the local community, local economic development is a crucial duty of local government. More than merely economic growth, local economic development also requires fostering participation and community dialogue and connecting people with resources. It is important to examine climate change and create resilience strategies to lessen the problems it provides in rural communities in order to increase employment and quality of life for both men and women in rural Ghana.
Cattle Feeding in the United States
Creators: name: Gustafson, Ronald A.
name: Van Arsdall, Roy N.
name: Gustafson, Ronald A.
name: Van Arsdall, Roy N.
Publisher: name: Unknown
Year: 1970
Subjects: subject: Food Consumption/Nutrition/Food Safety
subject: Livestock Production/Industries
subject: Marketing
subject: FOS: Economics and business
subject: Production Economics
subject: Beef
subject: feeding
subject: feedlots
subject: feeders
subject: placements
subject: contracting
subject: futures

description: This report describes the beef cattle industry and traces some recent trends in its makeup, it centers mainly on the cattle-feeding phase of the industry, but also considers feeder cattle and marketing. Beef consumption is high and still rising. Beef now accounts for about two-thirds of all red meat consumed in the United States. Continuation of present per capita trends coupled with increasing population will call for a third more beef by 1980. However, the supply of feeder cattle may become a limiting factor. Past increases have come from saving more calves as well as from larger numbers. Nearly all available calves are now used for feeders. Hence, further supplies will have to come from expanding beef cow numbers. Large-scale feedlots (those with 1,000 or more head capacity) accounted for only 1 percent of all feedlots in 1968, but they handled nearly half of all fed cattle. Farmer feedlots handled the others. Nearly all regions produce some fed cattle, but the leading cattle feeding areas are in the Corn Belt, the Northern Plains, the High Plains, and California. Large-scale commercial feedlots operate under a variety of arrangements in addition to feeding their own cattle. Some do custom or contract feeding. Some are tied into cooperatives, packing plants, or cattle ranches. Financing the physical plant for feeding cattle may run from a few thousand dollars to several million.
Two-loop evolution equations for light-ray operators
Creators: name: Braun, V. M.
name: Manashov, A. N.
Publisher: name: arXiv
Year: 2014
Subjects: subject: High Energy Physics - Phenomenology (hep-ph)
subject: High Energy Physics - Theory (hep-th)
subject: FOS: Physical sciences

description: QCD in non-integer d=4-2 epsilon space-time dimensions possesses a nontrivial critical point and enjoys exact scale and conformal invariance. This symmetry imposes nontrivial restrictions on the form of the renormalization group equations for composite operators in physical (integer) dimensions and allows to reconstruct full kernels from their eigenvalues (anomalous dimensions). We use this technique to derive two-loop evolution equations for flavor-nonsinglet quark-antiquark light-ray operators that encode the scale dependence of generalized hadron parton distributions and light-cone distribution amplitudes in the most compact form.
description: 13 pages, 1 figure
Large Eddy Simulation studies of the effects of alignment and wind farm length
Creators: name: Stevens, Richard J. A. M.
name: Gayme, Dennice F.
name: Meneveau, Charles
Publisher: name: arXiv
Year: 2014
Subjects: subject: Fluid Dynamics (physics.flu-dyn)
subject: FOS: Physical sciences

description: Large eddy simulations of wind farms are performed to study the effects of wind turbine row alignment with respect to the incoming flow direction. Various wind farms with fixed stream-wise spacing (7.85 rotor diameters) and varying lateral displacements and span-wise turbine spacings are considered, for a fixed inflow direction. Simulations show that, contrary to common belief, a perfectly staggered (checker-board) configuration does not necessarily give the highest average power output. Instead, the highest mean wind farm power output is found to depend on several factors, the most important one being the alignment that leads to minimization of wake effects from turbines in several upstream rows. This alignment typically occurs at significantly smaller angles than those corresponding to perfect staggering. The observed trends have implications for wind farm designs, especially in sites with a well-defined prevailing wind direction.
description: 14 pages, 13 figures
Alternative Government Rice Programs: An Economic Evaluation
Creators: name: Grant, Warren R.
name: Moore, Donald S.
name: Grant, Warren R.
name: Moore, Donald S.
Publisher: name: Unknown
Year: 1970
Subjects: subject: Agricultural and Food Policy
subject: Crop Production/Industries
subject: Demand and Price Analysis
subject: Research Methods/ Statistical Methods
subject: Government programs
subject: rice
subject: two-stage least squares
subject: linear programming
subject: time series

description: A model designed to indicate the effects of alternative Government rice programs gave an inelastic domestic demand (-.14) and an elastic export demand (-1.57) for U.S. rice in 1970. With no price change, about 98 percent of the production from any increase in rice allotments would have to be exported. Changing the support price influences domestic consumption in the opposite direction of the price change, but not proportional to the price change. Selection of the best of three types of programs examined (two-price plan, direct payment plan, and current program) must depend on determining who, consumer or taxpayer, should bear the costs of the program. With no Government rice programs, an equilibrium price of $3.40 and production of 138.7 million hundredweight would result. The rice industry with monopoly control of distribution could market the same output at a much higher price ($6.04) by using price discrimination between the domestic and export markets.
Abmash: Mashing Up Legacy Web Applications by Automated Imitation of Human Actions
Creators: name: Ortac, Alper
name: Monperrus, Martin
name: Mezini, Mira
Publisher: name: arXiv
Year: 2013
Subjects: subject: Software Engineering (cs.SE)
subject: FOS: Computer and information sciences

description: Many business web-based applications do not offer applications programming interfaces (APIs) to enable other applications to access their data and functions in a programmatic manner. This makes their composition difficult (for instance to synchronize data between two applications). To address this challenge, this paper presents Abmash, an approach to facilitate the integration of such legacy web applications by automatically imitating human interactions with them. By automatically interacting with the graphical user interface (GUI) of web applications, the system supports all forms of integrations including bi-directional interactions and is able to interact with AJAX-based applications. Furthermore, the integration programs are easy to write since they deal with end-user, visual user-interface elements. The integration code is simple enough to be called a "mashup".
description: Software: Practice and Experience (2013) -
Efficiency at maximum power of motor traffic on networks
Creators: name: Golubeva, Natalia
name: Imparato, Alberto
Publisher: name: arXiv
Year: 2014
Subjects: subject: Statistical Mechanics (cond-mat.stat-mech)
subject: FOS: Physical sciences

description: We study motor traffic on Bethe networks subject to hard-core exclusion for both tightly coupled one-state machines and loosely coupled two-state machines that perform work against a constant load. In both cases we find an interaction-induced enhancement of the efficiency at maximum power (EMP) as compared to non-interacting motors. The EMP enhancement occurs for a wide range of network and single motor parameters and is due to a change in the characteristic load-velocity relation caused by phase transitions in the system. Using a quantitative measure of the trade-off between the EMP enhancement and the corresponding loss in the maximum output power we identify parameter regimes where motor traffic systems operate efficiently at maximum power without a significant decrease in the maximum power output due to jamming effects.
description: 9 pages, 9 figures, submitted to Phys. Rev. E
Generalized Signal Alignment For Arbitrary MIMO Two-Way Relay Channels
Creators: name: Liu, Kangqi
name: Tao, Meixia
name: Yang, Dingcheng
Publisher: name: arXiv
Year: 2014
Subjects: subject: Information Theory (cs.IT)
subject: FOS: Computer and information sciences

description: In this paper, we consider the arbitrary MIMO two-way relay channels, where there are $K$ source nodes, each equipped with $M_i$ antennas, for $i=1,2,\cdots,K$, and one relay node, equipped with $N$ antennas. Each source node can exchange independent messages with arbitrary other source nodes assisted by the relay. We extend our newly-proposed transmission scheme, generalized signal alignment (GSA) in [1], to arbitrary MIMO two-way relay channels when $N>M_i+M_j$, $\forall i \neq j$. The key idea of GSA is to cancel the interference for each data pair in its specific subspace by two steps. This is realized by jointly designing the precoding matrices at all source nodes and the processing matrix at the relay node. Moreover, the aligned subspaces are orthogonal to each other. By applying the GSA, we show that a necessary condition on the antenna configuration to achieve the DoF upper bound $\min \{\sum_{i=1}^K M_i, 2\sum_{i=2}^K M_i,2N\}$ is $N \geq \max\{\sum_{i=1}^K M_i-M_s-M_t+d_{s,t}\mid \forall s,t\}$. Here, $d_{s,t}$ denotes the DoF of the message exchanged between source node $s$ and $t$. In the special case when the arbitrary MIMO two-way relay channel reduces to the $K$-user MIMO Y channel, we show that our achievable region of DoF upper bound is larger than the previous work.
description: 6 pages, 2 figures, submitted to IEEE Globecom 2014
Monetary exit and fiscal spillovers
Creators: name: Libich, Jan
name: Nguyen, Dat Thanh
name: Stehlik, P
Publisher: name: La Trobe
Year: 2023
Subjects: classificationCode: 4404
subject: Development studies
classificationCode: 3801
subject: Applied economics
classificationCode: 3803
subject: Economic theory
classificationCode: 380112
subject: Macroeconomics (incl. monetary and fiscal theory)

description: No description supplied.
Stufenlose Strangspannungsregelung in der Niederspannung
Creators: name: Holt, Mara
Publisher: name: TU Dortmund
Year: 2022
Subjects: subject: Niederspannungsnetz
subject: Spannungsqualität
subject: Spannungsregelung
subject: Strangspannungsregelung
subject: Variable Induktivität
subject: 620
subject: Niederspannungsnetz
subject: Spannungsregelung

description: Durch den zunehmenden Ausbau erneuerbarer Energien und die Elektrifizierung des Verkehrs- und Wärmesektors kommt es in ländlichen Niederspannungsnetzen vermehrt zu Problemen bei der Einhaltung des Spannungsbandes. Für den dadurch erforderlichen Netzausbau bietet gerade bei langen Netzausläufern in der Niederspannung der Einsatz von Strangspannungsreglern eine kosteneffiziente Alternative zu konventionellen Maßnahmen. Die aktuell bekannten Umsetzungen bewirken jedoch eine Einprägung von Netzrückwirkungen oder einen erhöhten Aufwand für den Netzbetreiber hinsichtlich der Instandhaltung. Aus diesem Grund wird in dieser Arbeit ein Konzept entwickelt und erforscht, das eine netzrückwirkungsarme und robuste Strangspannungsregelung ermöglicht. Das Konzept beruht auf einem stufenlosen Strangspannungsregler, der auf Basis von variablen Induktivitäten arbeitet. Neben der allgemeinen Wirkungsweise und Aufbaumöglichkeiten eines solchen Strangspannungsreglers werden Ansteuerungs- und Regelungsverfahren untersucht, welche das statische und dynamische Verhalten der stufenlosen Spannungsregelung netzverträglich gestalten. Dabei wird die Netzverträglichkeit des entwickelten Konzeptes über eine Analyse der Netzauswirkungen sowie eine Erprobung im Labor und im Feld bewertet.