cometadata/datacite-rtg-text-other-reclassification-records huggingface dataset:
Machimus cyanopus
Creators: name: Schlüsslmayr, Gerhard
Publisher: name: Zenodo
Year: 2018
Subjects: Biodiversity
Taxonomy
Animalia
Arthropoda
Insecta
Diptera
Asilidae
Machimus
Machimus cyanopus

description: Machimus cyanopus (LOEW, 1849)
NÖ, Hainburg, Spitzerberg, 21.6.01 und 10.7.01.
Neu für Niederösterreich. In FRANZ (1989) keine Funde aus dem Gebiet.
description: Published as part of Schlüsslmayr, Gerhard, 2018, Erstnachweise von Fliegen (Diptera) für Österreich und einige Bundesländer, pp. 765-800 in Linzer biologische Beiträge 50 (1) on page 767, DOI: 10.5281/zenodo.4004374
Revealing the relation between black-hole growth and host-galaxy compactness among star-forming galaxies
Creators: name: Ni, Q.
name: Brandt, W. N.
name: Yang, G.
name: Leja, J.
name: Chen, C. -T. J.
name: Luo, B.
name: Matharu, J.
name: Sun, M.
name: Vito, F.
name: Xue, Y. Q.
name: Zhang, K.
Publisher: name: arXiv
Year: 2020
Subjects: subject: Astrophysics of Galaxies (astro-ph.GA)
subject: FOS: Physical sciences

description: Recent studies show that a universal relation between black-hole (BH) growth and stellar mass ($M_\bigstar$) or star formation rate (SFR) is an oversimplification of BH-galaxy co-evolution, and that morphological and structural properties of host galaxies must also be considered. Particularly, a possible connection between BH growth and host-galaxy compactness was identified among star-forming (SF) galaxies. Utilizing $\approx 6300$ massive galaxies with $I_{\rm 814W}~
description: 21 pages, 21 figures. Accepted for publication in MNRAS
Horseshoes and invariant tori in cosmological models with a coupled field and non-zero curvature
Creators: name: Butler, Leo T.
Publisher: name: arXiv
Year: 2020
Subjects: subject: Mathematical Physics (math-ph)
subject: Dynamical Systems (math.DS)
subject: Chaotic Dynamics (nlin.CD)
subject: FOS: Physical sciences
subject: FOS: Mathematics
subject: 37J30, 37J35, 70F07, 70F08

description: This paper studies the dynamics of a family of hamiltonian systems that originate from Friedman-Lemaître-Robertson-Walker space-times with a coupled field and non-zero curvature. In four distinct cases, previously considered by Maciejewski, Przybylska, Stachowiak & Szydowski, it is shown that there are homoclinic connections to invariant submanifolds and the connections split. These results imply the non-existence of a real-analytic integral independent of the hamiltonian.
description: 21 pages, 4 figures
Estimating Mixed Logit Recreation Demand Models With Large Choice Sets
Creators: name: Domanski, Adam
name: Domanski, Adam
Publisher: name: Unknown
Year: 2009
Subjects: subject: Environmental Economics and Policy
subject: Research Methods/ Statistical Methods
subject: Sampling of alternatives
subject: discrete choice
subject: mixed logit
subject: conditional logit
subject: recreational demand
subject: Wisconsin
subject: fishing
subject: microeconometrics

description: Discrete choice models are widely used in studies of recreation demand. They have proven valuable when modeling situations where decision makers face large choice sets and site substitution is important. However, when the choice set faced by the individual becomes very large (on the order of hundreds or thousands of alternatives), computational limitations make estimation with the full choice set intractable. Sampling of alternatives in a conditional logit framework is an effective method to limit computational burdens while still producing consistent estimates. This method is allowed by the existence of the independence of irrelevant alternatives (IIA) assumption. More advanced mixed logit models account for unobserved preference heterogeneity and overcome the behavioral limitations of the IIA assumption, however in doing so, prohibit sampling of alternatives. A method is developed where a latent class (finite mixture) model is estimated via the expectations-maximization algorithm and in doing so, allows consistent sampling of alternatives in a mixed logit model. The method is tested and applied to a recreational demand Wisconsin fishing survey.
Machimus rusticus
Creators: name: Schlüsslmayr, Gerhard
Publisher: name: Zenodo
Year: 2018
Subjects: Biodiversity
Taxonomy
Animalia
Arthropoda
Insecta
Diptera
Asilidae
Machimus
Machimus rusticus

description: Machimus rusticus (MEIGEN, 1820)
Bgld, Illmitz, Hölle, 14.6.17, 3 Ex; Loretto, Frauenwiesen, 15.6.17; St. Margarethen, NSG Nord, 21.6.17, 4 Ex; Weiden, Zitzmannsdorfer Wiesen, 27.6.17, 4 Ex; Winden, Hackelsberg, 9.6.17.
Neu für Burgenland.
description: Published as part of Schlüsslmayr, Gerhard, 2018, Erstnachweise von Fliegen (Diptera) für Österreich und einige Bundesländer, pp. 765-800 in Linzer biologische Beiträge 50 (1) on page 767, DOI: 10.5281/zenodo.4004374
The Strömgren sphere, the environment and the reionization in the local universe of the highest redshift QSOs
Creators: name: Yu, Qingjuan
name: Lu, Youjun
Publisher: name: arXiv
Year: 2004
Subjects: subject: Astrophysics (astro-ph)
subject: FOS: Physical sciences

description: In this paper we investigate the environment and reionization process around the highest redshift QSOs having Gunn-Peterson troughs (z>6.1). Starting with the cosmic density perturbation and structure formation theory and the fact that the highest redshift QSOs are located in rare overdense regions, we show that the halo formation, gas distribution, and star formation around QSOs are biased from those of the cosmic average. We argue that a significant fraction of hydrogen in the Strömgren sphere around QSOs is ionized by photons from stars and that only about several percent to at most 10%--20% of the total hydrogen is left (e.g., in minihalos, halos, or high-density subregions) to be ionized by QSO photons. The cosmic average neutral hydrogen fraction at z~6.2-6.4 should also be smaller than the upper limit of 10%--20% and may be only a few percent. We analyze the clumping property of the hydrogen ionized by QSOs and study the evolution of the Strömgren sphere. We find that the expected Strömgren radii from our models are consistent with observations if the lifetime of the highest redshift QSOs is about or longer than a few times 10^7 yr (as is the lifetime of the main population of QSOs; with comoving number density peaked at z~2-3). With such a QSO lifetime, the ages of most of the observed QSOs are long enough that the QSO photon emission is balanced by the recombination of the hydrogen ionized by QSO photons in their Strömgren spheres, and the expected Strömgren radii from the balance are independent of the detailed values of the QSO ages. (abridged)
description: 14 pages, 3 figures; minor revisions to match to the published version
LION OPTIMIZATION ALGORITHM FOR LOAD FREQUENCY CONTROL OF MULTI-AREA INTERCONNECTED POWER SYSTEMS WITH NON-LINEARITIES
Creators: name: M. Rajkumar, Dr. S. Padma, Dr. R. Kannan
Publisher: name: Shenyang Jianzhu Daxue Xuebao (Ziran Kexue Ban)/Journal of Shenyang Jianzhu University (Natural Science)
Year: 2024
Subjects: Load Frequency Control (LFC); Multi-area power system; Proportional-Integral (PI) controller; Lion Optimization Algorithm (LOA)

description: Abstract: This work introduces the Lion Optimization Algorithm, a novel nature-inspired metaheuristic algorithm designed for complex optimization problems. Motivated by the unique social behaviors and cooperative hunting strategies of lions, LOA offers a population-based approach. The algorithm's effectiveness is demonstrated through its application to a three-area interconnected power system incorporating non-linearities such as Governor Dead Band and Generation Rate Constraint. A time-domain objective function, optimized using LOA, tunes the parameters of a PI controller for Load Frequency Control. Simulation results across various loading conditions reveal that LOA-based controllers achieve superior performance compared to conventional PI controllers, particularly in settling times and other relevant performance indices.

 

Keywords: Load Frequency Control (LFC); Multi-area power system; Proportional-Integral (PI) controller; Lion Optimization Algorithm (LOA)
On the interaction between power-aware computer-aided design algorithms for field-programmable gate arrays
Creators: name: Lamoureux, Julien
Publisher: name: University of British Columbia
Year: 2009

description: As Field Programmable Gate Array (FPGA) power consumption continues to increase, lower power FPGA circuitry, architectures, and Computer-Aided Design (CAD) tools need to be developed. Before designing low-power FPGA circuitry, architectures, or CAD tools, we must first determine where the biggest gains (in terms of energy reduction) are to be made and whether these gains are cumulative. In this thesis, we focus on FPGA CAD tools. Specifically, we describe a new power-aware CAD flow for FPGAs that was developed to answer the above questions. Estimating energy using very detailed post-route power and delay models, we determine the gains obtained by our power-aware technology mapping, clustering, placement, and routing algorithms and investigate how each gain behaves when the algorithms are applied concurrently. The individual energy reductions of the power-aware technology-mapping, clustering, placement, and routing algorithms were 7.6%, 12.6%, 3.0%, and 2.6% respectively. The majority of the overall energy reduction was achieved during the technology mapping and clustering stages of the power-aware FPGA CAD flow. In addition, the gains were mostly cumulative when the individual power-aware CAD algorithms were applied concurrently with overall energy reductions of 22.6%.
Test of Universality in the Ising Spin Glass Using High Temperature Graph Expansion
Creators: name: Daboul, Daniel
name: Chang, Iksoo
name: Aharony, Amnon
Publisher: name: arXiv
Year: 2004
Subjects: subject: Disordered Systems and Neural Networks (cond-mat.dis-nn)
subject: Statistical Mechanics (cond-mat.stat-mech)
subject: FOS: Physical sciences

description: We calculate high-temperature graph expansions for the Ising spin glass model with 4 symmetric random distribution functions for its nearest neighbor interaction constants J_{ij}. Series for the Edwards-Anderson susceptibility χ_EA are obtained to order 13 in the expansion variable (J/(k_B T))^2 for the general d-dimensional hyper-cubic lattice, where the parameter J determines the width of the distributions. We explain in detail how the expansions are calculated. The analysis, using the Dlog-Padé approximation and the techniques known as M1 and M2, leads to estimates for the critical threshold (J/(k_B T_c))^2 and for the critical exponent γin dimensions 4, 5, 7 and 8 for all the distribution functions. In each dimension the values for γagree, within their uncertainty margins, with a common value for the different distributions, thus confirming universality.
description: 13 figures
Knowledge and Willingness to Pay for the Conservation of Wildlife Species: Experimental Results Evaluating Australian Tropical Species
Creators: name: Tisdell, Clement A.
name: Wilson, Clevo
name: Tisdell, Clement A.
name: Wilson, Clevo
Publisher: name: Unknown
Year: 2004
Subjects: subject: Environmental Economics and Policy
subject: Conservation policies
subject: knowledge and willingness to pay

description: The nature of an experiment involving 204 residents is outlined and the results are reported and analysed. Two consecutive surveys of the respondents provide data about their stated knowledge of 23 wildlife species present in tropical Australia, most of which exclusively occur there. In addition, these surveys provide data about the willingness of respondents to pay for the conservation of those species belonging to three taxa; reptiles, mammals, and birds. Thus it is possible to compare the respondents’ stated knowledge of the species with their willingness to pay for their conservation, and to draw relevant inferences from this. From the initial survey and these associations, interesting relationships can be observed between those variables (knowledge and willingness to pay). The second survey was completed after the respondents’ knowledge of the species was experimentally increased and became more balanced. This is shown to result in increased dispersion (greater discrimination) in willingness to contribute to conservation of the different species in the set of wildlife species considered. Both theoretical and policy conclusions are drawn from the results.
An exact mapping between loop-erased random walks and an interacting field theory with two fermions and one boson
Creators: name: Shapira, Assaf
name: Wiese, Kay Jörg
Publisher: name: arXiv
Year: 2020
Subjects: subject: Statistical Mechanics (cond-mat.stat-mech)
subject: FOS: Physical sciences

description: We give a simplified proof for the equivalence of loop-erased random walks to a lattice model containing two complex fermions, and one complex boson. This equivalence works on an arbitrary directed graph. Specifying to the $d$-dimensional hypercubic lattice, at large scales this theory reduces to a scalar $ϕ^4$-type theory with two complex fermions, and one complex boson. While the path integral for the fermions is the Berezin integral, for the bosonic field we can either use a complex field $ϕ(x)\in \mathbb C$ (standard formulation) or a nilpotent one satisfying $ϕ(x)^2 =0$. We discuss basic properties of the latter formulation, which has distinct advantages in the lattice model.
description: 14 pages
Machimus setibarbus
Creators: name: Schlüsslmayr, Gerhard
Publisher: name: Zenodo
Year: 2018
Subjects: Biodiversity
Taxonomy
Animalia
Arthropoda
Insecta
Diptera
Asilidae
Machimus
Machimus setibarbus

description: Machimus setibarbus (LOEW, 1849)
Bgld, St. Margarethen, NSG Nord, 21.6.17; Breitenbrunn, Thenau, 6.6.17, 2 Ex; Donnerskirchen, Kirchberg, 22.6.17.
Nach Fauna Europaea neu für Österreich!
description: Published as part of Schlüsslmayr, Gerhard, 2018, Erstnachweise von Fliegen (Diptera) für Österreich und einige Bundesländer, pp. 765-800 in Linzer biologische Beiträge 50 (1) on page 767, DOI: 10.5281/zenodo.4004374
Antarctic Tourists, Wildlife and the Environment: Attractions and Reactions to Antarctica
Creators: name: Tisdell, Clement A.
name: Wilson, Clevo
name: Tisdell, Clement A.
name: Wilson, Clevo
Publisher: name: Unknown
Year: 2004
Subjects: subject: Environmental Economics and Policy
subject: Antarctica
subject: tourism
subject: wildlife
subject: Antarctic Treaty
subject: Madrid Protocol
subject: environmental protection.

description: Provides background on the development and nature of Antarctic tourism and associated environmental issues, as well as agreements and regulations affecting environmental management in Antarctica. Following an outline of the survey methodology and provision of information on the socioeconomic profiles of the respondents, results of a survey of Antarctic tourists on the Russian registered ship the ‘Akademik Ioffe’ are reported. The importance of Antarctic wildlife as an attraction for these Antarctic tourists is then given particular attention. The study considers amongst other things how important Antarctic wildlife was in convincing these tourists to undertake their trip to Antarctica, the importance to the tourists of seeing different species of wildlife and the relative importance of wildlife compared with other attractions of the tour to Antarctica. Views both prior to and following visits to Antarctica are given. The views of the tourists about selected environmental issues involving Antarctica were canvassed. These are reported and discussed. Amongst the subjects discussed is whether the sampled tourists favour an expansion in tourism to Antarctica and why. An overall assessment completes the study.
A Model of Dark Energy and Dark Matter
Creators: name: Hung, P. Q.
Publisher: name: arXiv
Year: 2005
Subjects: subject: High Energy Physics - Phenomenology (hep-ph)
subject: Astrophysics (astro-ph)
subject: FOS: Physical sciences

description: A dynamical model for the dark energy is presented in which the ``quintessence'' field is the axion, $a_Z$, of a spontaneously broken global $U(1)_{A}^{(Z)}$ symmetry whose potential is induced by the instantons of a new gauge group $SU(2)_Z$. The $SU(2)_Z$ coupling becomes large at a scale $Λ_Z \sim 10^{-3} eV$ starting from an initial value $M$ at high energy which is of the order of the Standard Model (SM) couplings at the same scale $M$. A perspective on a possible unification of $SU(2)_Z$ with the SM will be briefly discussed. We present a scenario in which $a_Z$ is trapped in a false vacuum characterized by an energy density $\sim (10^{-3} eV)^4$. The lifetime of this false vacuum is estimated to be extremely large. Other estimates relevant to the ``coincidence issue'' include the ages of the universe when the $a_Z$ potential became effective, when the acceleration ``began'' and when the energy density of the false vacuum became comparable to that of (baryonic and non-baryonic) matter. Other cosmological consequences include a possible candidate for the weakly interacting (WIMP) Cold Dark Matter as well as a scenario for leptogenesis. A brief discussion on possible laboratory detections of some of the particles contained in the model will also be presented.
description: 24 double-column pages, 14 figures; Added references; Corrected Typos
Birds in an Australian Rainforest: Their Attraction for Visitors and Visitor's Ecological Impacts
Creators: name: Tisdell, Clement A.
name: Wilson, Clevo
name: Tisdell, Clement A.
name: Wilson, Clevo
Publisher: name: Unknown
Year: 2004
Subjects: subject: Environmental Economics and Policy
subject: Lamington National Park
subject: tourism
subject: Australian rainforest
subject: conservation
subject: birds

description: Lamington National Park in Queensland, Australia is noted for its rainforest and is part of the World Heritage listed property but prior to this work, no systematic study has been done of the importance of birds to its visitors. This study is based on data from survey forms handed to visitors at an important site in the park and completed by visitors following their visit. It yielded 622 useable responses. These enabled us to establish the comparative importance of birds as an attraction to this site for this sample of visitors. Furthermore, logit regression is used to target analysis and to identify factors that increase the likelihood of a visitor saying that birds are an important attraction. In addition, the relative importance to visitors of various attributes of birds at this site is established. These attributes include hearing birds, diversity of birds, seeing lots of birds, presence of rare birds, presence of brightly coloured birds and physical contact with birds. Logit regression analysis is used to isolate independent variables that increase or decrease the likelihood that visitors find diversity of birds, brightly coloured birds or physical contact with birds at this site to be important. For example, factors such as the level of education of visitors, their gender, knowledge of birds and conservation attitudes and statistically significant influences. As a result of the analysis potential conflicts between different types of park visitors in relation to human interaction with birds are identified. Some potential ecological implications of human interactions with birds are modelled and discussed, and their economic conservation and biodiversity consequences are considered
Nature-based Tourism and the Valuation of its Environmental Resources: Economic and Other Aspects
Creators: name: Tisdell, Clement A.
name: Tisdell, Clement A.
Publisher: name: Unknown
Year: 2004
Subjects: subject: Environmental Economics and Policy
subject: Nature-based Tourism
subject: Environmental Resources
subject: Environmental Conservation

description: Nature-based tourism has grown in importance in recent decades, and strong links have been established between it and ecotourism. This reflects rising incomes, greater levels of educational attainment and changing values, especially in the Western world. Nature-based tourism is quite varied. Different types of such tourism are identified and their consequences for sustainability of their resource-base are briefly considered. The development and management of nature-based tourism involves many economic aspects, several of which are discussed. For example, one must consider the economics of reserving or protecting land for this type of tourism. What economic factors should be taken into account? Economists stress the importance of taking into account the opportunity costs involved in such a decision. This concept is explained. However, determining the net economic value of an area used for tourism is not straightforward. Techniques for doing this, such as the travel cost method and stated value methods, are introduced. Natural areas reserved for tourism may have economic value not only for tourism but also jointly for other purposes, such as conserving wildlife, maintaining hydrological cycles and so on. These other purposes, should be taken into account when considering the use of land for nature-based tourism. According to one economic point of view, land should be used in a way that maximises its total economic value. While this approach has its merits, it does not take into account the distribution of benefits from land use and its local impacts on income and employment. These can be quite important politically and for nature conservation, and are discussed. Finally, there is some discussion of whether fees charged to tourists for access to environmental resources should discriminate between domestic tourists and foreigners.
On the Validity of the Parabolic Effective-Mass Approximation for the Current-Voltage Calculation of Silicon Nanowire Transistors
Creators: name: Wang, Jing
name: Rahman, Anisur
name: Ghosh, Avik
name: Klimeck, Gerhard
name: Lundstrom, Mark
Publisher: name: arXiv
Year: 2004
Subjects: subject: Mesoscale and Nanoscale Physics (cond-mat.mes-hall)
subject: FOS: Physical sciences

description: This paper examines the validity of the widely-used parabolic effective-mass approximation for computing the current-voltage (I-V) characteristics of silicon nanowire transistors (SNWTs). The energy dispersion relations for unrelaxed Si nanowires are first computed by using an sp3d5s* tight-binding model. A semi-numerical ballistic FET model is then adopted to evaluate the I-V characteristics of the (n-type) SNWTs based on both a tight-binding dispersion relation and parabolic energy bands. In comparison with the tight-binding approach, the parabolic effective-mass model with bulk effective-masses significantly overestimates SNWT threshold voltages when the wire width is <3nm, and ON-currents when the wire width is <5nm. By introducing two analytical equations with two tuning parameters, however, the effective-mass approximation can well reproduce the tight-binding I-V results even at a \~1.36nm wire with.
description: 23 pages, 9 figures
Glow Worms as a Tourist Attraction in Springbrook National Park: Visitor Attitudes and Economic Issues
Creators: name: Wilson, Clevo
name: Tisdell, Clement A.
name: Merritt, David
name: Wilson, Clevo
name: Tisdell, Clement A.
name: Merritt, David
Publisher: name: Unknown
Year: 2004
Subjects: subject: Environmental Economics and Policy
subject: Glow Worms
subject: insect-based tourism
subject: environmental conservation
subject: biological resources

description: Insect-based tourism mainly caters to a niche market, but its popularity has been growing in recent years. Despite its popularity this form of tourism has remained under-researched and in a sense its contribution to the tourism industry has gone mostly unnoticed. This paper reports the results of a study undertaken on one form of popular insect-based tourism, namely glow worms. The study was undertaken in Springbrook National Park (Natural Bridge section) southeast Queensland, which has one of the largest glow worm colonies in Australia that attracts thousands of visitors each year. A study of this form of tourism is important and useful for several reasons. It is important to understand this hitherto under-studied tourism activity to determine the type of visitors, their socio-economic attributes, economic benefits to the local economy, visitors’ knowledge of glow worms, education imparted, visitor satisfaction of glow worm viewing and visitor attitudes for the introduction of a user fee system to view glow worms. An understanding of these issues could not only help to better manage this valuable biological resource, but can be used to develop the industry to cater to a growing number of visitors. Tourism in glow worms can potentially be used not only to educate the public on the threats affecting glow worms and their colonies, but could also be used to conserve them. Lessons learnt from glow worms as an attraction to Springbrook National Park can be used to better manage and further develop other existing and new glow worm sites in Australia and elsewhere for tourism. Furthermore, it could provide some guidance for the management and development of other forms of current insect-based tourism activities (eg. butterflies) and develop new tourism ventures based on species such as stick insects and jewel beetles for which Australia is well known (Reader’s Digest, 1997)
PHENIX results on the Lévy stable Bose-Einstein correlation function
Creators: name: Lokos, Sandor
Publisher: name: Zenodo
Year: 2020
Subjects: wpcf18
phenix
levy
correlations
bose-einstein
rhic
hbt
au+au
pion

description: Talk presented at the Workshop for Particle Correlations and Spectroscopy 2018 conference. Correlations and Levy analyses in PHENIX Experiment.
Lenia and Expanded Universe
Creators: name: Chan, Bert Wang-Chak
Publisher: name: arXiv
Year: 2020
Subjects: subject: Cellular Automata and Lattice Gases (nlin.CG)
subject: Artificial Intelligence (cs.AI)
subject: Pattern Formation and Solitons (nlin.PS)
subject: FOS: Physical sciences
subject: FOS: Computer and information sciences

description: We report experimental extensions of Lenia, a continuous cellular automata family capable of producing lifelike self-organizing autonomous patterns. The rule of Lenia was generalized into higher dimensions, multiple kernels, and multiple channels. The final architecture approaches what can be seen as a recurrent convolutional neural network. Using semi-automatic search e.g. genetic algorithm, we discovered new phenomena like polyhedral symmetries, individuality, self-replication, emission, growth by ingestion, and saw the emergence of "virtual eukaryotes" that possess internal division of labor and type differentiation. We discuss the results in the contexts of biology, artificial life, and artificial intelligence.
description: 8 pages, 5 figures, 1 table; submitted to ALIFE 2020 conference
Molobratia teutonus
Creators: name: Schlüsslmayr, Gerhard
Publisher: name: Zenodo
Year: 2018
Subjects: Biodiversity
Taxonomy
Animalia
Arthropoda
Insecta
Diptera
Asilidae
Molobratia
Molobratia teutonus

description: Molobratia teutonus (LINNÉ, 1767)
Bgld, Breitenbrunn, Thenau, 6.6.17, 3 Ex; Winden, Hackelsberg, 9.6.17, 2 Ex; Zurndorf, NSG, 14.6.17, 2 Ex; Loretto, 15.6.17; Donnerskirchen, Kirchberg, 22.6.17.
Neu für Burgenland.
description: Published as part of Schlüsslmayr, Gerhard, 2018, Erstnachweise von Fliegen (Diptera) für Österreich und einige Bundesländer, pp. 765-800 in Linzer biologische Beiträge 50 (1) on page 767, DOI: 10.5281/zenodo.4004374
Metals and Dust in Intermediate-redshift Damped Ly-alpha Galaxies
Creators: name: Khare, Pushpa
name: Kulkarni, Varsha P.
name: Lauroesch, James T.
name: York, Donald G.
name: Crotts, Arlin P. S.
name: Nakamura, Osamu
Publisher: name: arXiv
Year: 2004
Subjects: subject: Astrophysics (astro-ph)
subject: FOS: Physical sciences

description: We report spectroscopic observations with the Multiple Mirror Telescope for 11 damped Lyman-alpha absorbers (DLAs) or strong DLA candidates at 0.1 < z < 1.5, including several absorbers discovered in the Sloan Digital Sky Survey. In particular, we have measured absorption lines of Zn II, Cr II, Ni II, Fe II, Mn II, Ti II, Ca II, and Si II. These measurements have doubled the sample of Zn and Cr measurements at z < 1. The average relative abundance patterns in these objects are very similar to those found for high-redshift DLAs reported in the literature. Our observations suggest that the dust content, as determined by [Cr/Zn], does not show much change with redshift. We also examine the sample for correlation of [Cr/Zn] with estimates of the quasar reddening. Our data suggest that the global mean metallicity of DLAs, as measured by the gas phase abundance of Zn, at best shows a weak evolution with redshift over the range 0.4 < z <3.9.
description: aastex52, 47 pages including 11 postscript figures. Accepted for publication in The Astrophysical Journal
Public Money for Public Goods: Winners and Losers from CAP Reform
Creators: name: Zahrnt, Valentin
name: Zahrnt, Valentin
Publisher: name: Unknown
Year: 2009
Subjects: subject: Agricultural and Food Policy
subject: Political Economy
subject: CAP
subject: subsidies
subject: budget review

description: To attain fundamental reform of the post-2013 Common Agricultural Policy (CAP), a serious debate is needed in 2009/10 that prepares the decisions to be taken in 2011/12. The paper contributes to this debate, first, by arguing that the Single Farm Payment should not become the mainstay of the future CAP but be gradually phased out. Second, it proposes that the existing two-pillar structure of the CAP should be replaced by a public goods pillar (containing all efficient policies to be preserved) and a discretionary pillar (encompassing all inefficient policies to be removed over time). This would give member states flexibility in how they phase out inefficient policies, while the EU reform agenda would not be clogged with the contentious details of their progressive removal. Third, the paper assesses the criteria likely to guide future allocation of CAP payments, such as GDP per capita, agricultural and forest areas, and areas with Natura 2000 status. Fourth, it estimates member states’ share in total CAP payments under different post-2013 scenarios. This reveals surprising differences between the negotiating positions that countries traditionally adopt and the payment receipts they can expect from reform.
New Cutoff Frequency for Torsional Alfv'en Waves Propagating along Wide Solar Magnetic flux Tubes
Creators: name: Routh, Swati
name: Musielak, Z. E.
name: Sundar, M. N.
name: Joshi, Sai Sravanthi
name: Charan, Sree
Publisher: name: arXiv
Year: 2020
Subjects: subject: Solar and Stellar Astrophysics (astro-ph.SR)
subject: FOS: Physical sciences

description: An isolated, isothermal, and wide magnetic flux tube embedded either in the solar chromosphere or in the lower solar corona is considered, and the propagation of linear torsional Alfv'en waves is investigated. It is shown that the wideness of the tube leads to a new cutoff frequency, which is a local quantity that gives the conditions for the wave propagation at different atmospheric heights. The cutoff is used to establish the ranges of frequencies for the propagating and reflected waves in the solar chromosphere and lower solar corona. The obtained results are compared to those previously obtained for thin magnetic flux tubes and the differences are discussed. Moreover, the results are also compared to some current observational data, and used to establish the presence of propagating waves in the data at different atmospheric heights; this has profound implications on the energy and momentum transfer by the waves in the solar atmosphere, and the role of linear torsional Alfv'en waves in the atmospheric heating and wind acceleration.
Pergaulan Bebas Ditinjau Dari Pendidikan Seksual Pada Generasi Z di Kota Bukittinggi
Creators: name: Muchti, Asih
name: Kustanto, Debby Ratno
Publisher: name: Zenodo
Year: 2025
Subjects: Pergaulan Bebas
Bukittinggi
Pendidikan Seksual
Generasi Z

description: Pergaulan bebas merupakan tantang sosial dan moral, fenomena ini menimbulkan kontroversi di masyarakat Sumatera Barat yang kental dengan nilai-nilai budaya Minangkabau dan agama Islam. Penelitian ini bertujuan untuk mengetahui apakah ada hubungan antara pendidikan seksual dengan pergaulan bebas di Kota Bukittinggi tahun 2024. Penelitian ini merupakan penelitian kuantitatif menggunakan metode analitik dengan desain cross sectional. Populasi penelitian ini adalah seluruh remaja Kota Bukittinggi berjumlah  71.563 remaja dengan sampel 119 remaja. Penelitian ini di lakukan di Kota Bukittinggi tahun 2024. Teknik Pengambilan sampel pada penelitian adalah menggunakan teknik Non-probability sampling dengan pendekatan Accidental sampling. Instrumen penelitian yang digunakan kuesioner, analisis data digunakan uji chi-square test. Dari hasil penelitian didapatkan bahwa pendidikan di sekolah memiliki hubungan yang bermakna dengan pergaulan bebas (p-value 0,0001), pendidikan seksual di rumah memiliki hubungan yang bermakna dengan pergaulan bebas (p-value 0,0001), pendidikan seksual teman sebaya memiliki hubungan yang bermkna dengan pergaulan bebas (p-value 0,0001). Dapat disimpulkan bahwa pendidikan dirumah, disekolah dan teman sebaya memiliki hubungan yang bermakna dengan pergaulan bebas.
Bombylisoma minimum
Creators: name: Schlüsslmayr, Gerhard
Publisher: name: Zenodo
Year: 2018
Subjects: Biodiversity
Taxonomy
Animalia
Arthropoda
Insecta
Diptera
Bombyliidae
Bombylisoma
Bombylisoma minimum

description: Bombylisoma minimum (SCOPOLI, 1771)
Bgld, Zurndorf, NSG, 27.6.17, 2 Ex; Illmitz, Hölle, 14.6.17, 6 Ex.
Neu für Burgenland. In FRANZ (1989) nur 1 Fund aus Salzburg.
description: Published as part of Schlüsslmayr, Gerhard, 2018, Erstnachweise von Fliegen (Diptera) für Österreich und einige Bundesländer, pp. 765-800 in Linzer biologische Beiträge 50 (1) on page 768, DOI: 10.5281/zenodo.4004374
Technical efficiency of organic milk-farms in Germany - the role of subsidies and of regional factors
Creators: name: Lakner, Sebastian
name: Lakner, Sebastian
Publisher: name: Unknown
Year: 2009
Subjects: subject: Agricultural and Food Policy
subject: Production Economics
subject: Productivity Analysis
subject: Efficiency Analysis
subject: Organic Farming
subject: Agglomerations Effects
subject: Subsidies

description: This paper investigates the efficiency of organic milk farms in Germany based on data from 1994/95 to 2005/06. Five inputs and one output are analyzed by means of a stochastic frontier production function, allowing for heteroscedasticity and technical effects. The selection of determinants of technical efficiency includes 5 groups of indicators. The analysis is focused on the impacts of farm support of organic farms and of regional factors, that can influence technical efficiency. The results show, that the agri-environmental payments show a negative effect on efficiency. Farms, which receive investment aid, show lower efficiency scores. Finally, the implication for agricultural policy are discussed.
Manifold Properties from Causal Sets using Chains
Creators: name: Kambor, Joachim
name: X, Nomaan
Publisher: name: arXiv
Year: 2020
Subjects: subject: General Relativity and Quantum Cosmology (gr-qc)
subject: FOS: Physical sciences

description: We study the utility of chains defined on causal sets in estimating continuum properties like the curvature, the proper time and the spacetime dimension through a numerical analysis. In particular, we show that in $\text{dS}_2$ and $\text{FLRW}_3$ spacetimes the formalism of arXiv:1212.0631 with slight modifications gives the right continuum properties. We also discuss a possible test of manifoldlikeness using this formalism by considering two models of non-manifoldlike causal sets. This is a part of a broader idea of the geometrical reconstruction of continuum properties given a discrete sub structure, in this case the causal set.
description: 30 pages, 12 figures
Hybrid stars that masquerade as neutron stars
Creators: name: Alford, Mark
name: Braby, Matt
name: Paris, Mark
name: Reddy, Sanjay
Publisher: name: arXiv
Year: 2004
Subjects: subject: Nuclear Theory (nucl-th)
subject: Astrophysics (astro-ph)
subject: High Energy Physics - Phenomenology (hep-ph)
subject: FOS: Physical sciences

description: We show that a hybrid (nuclear + quark matter) star can have a mass-radius relationship very similar to that predicted for a star made of purely nucleonic matter. We show this for a generic parameterization of the quark matter equation of state, and also for an MIT bag model, each including a phenomenological correction based on gluonic corrections to the equation of state. We obtain hybrid stars as heavy as 2 M_solar for reasonable values of the bag model parameters. For nuclear matter, we use the equation of state calculated by Akmal, Pandharipande, and Ravenhall using many-body techniques. Both mixed and homogeneous phases of nuclear and quark matter are considered.
description: 22 pages, LaTeX. Extra figure and explanation added
Bombylius (Bombylius) minor
Creators: name: Schlüsslmayr, Gerhard
Publisher: name: Zenodo
Year: 2018
Subjects: Biodiversity
Taxonomy
Animalia
Arthropoda
Insecta
Diptera
Bombyliidae
Bombylius
Bombylius minor

description: Bombylius (Bombylius) minor LINNAEUS, 1758
Bgld, Zurndorf, NSG, 18.7.17.
Nach Fauna Europaea neu für Österreich!
description: Published as part of Schlüsslmayr, Gerhard, 2018, Erstnachweise von Fliegen (Diptera) für Österreich und einige Bundesländer, pp. 765-800 in Linzer biologische Beiträge 50 (1) on page 768, DOI: 10.5281/zenodo.4004374
Deformed Cauchy random matrix ensembles and large $N$ phase transitions
Creators: name: Russo, Jorge G.
Publisher: name: arXiv
Year: 2020
Subjects: subject: High Energy Physics - Theory (hep-th)
subject: FOS: Physical sciences

description: We study a new hermitian one-matrix model containing a logarithmic Penner's type term and another term, which can be obtained as a limit from logarithmic terms. For small coupling, the potential has an absolute minimum at the origin, but beyond a certain value of the coupling the potential develops a double well. For a higher critical value of the coupling, the system undergoes a large $N$ third-order phase transition.
description: 16 pages, 10 figures
Deploying a Steered Query Optimizer in Production at Microsoft
Creators: name: Zhang, Wangda
name: Interlandi, Matteo
name: Mineiro, Paul
name: Qiao, Shi
name: Lie, Nasim Ghazanfari Karlen
name: Friedman, Marc
name: Hosn, Rafah
name: Patel, Hiren
name: Jindal, Alekh
Publisher: name: arXiv
Year: 2022
Subjects: subject: Databases (cs.DB)
subject: Machine Learning (cs.LG)
subject: FOS: Computer and information sciences

description: Modern analytical workloads are highly heterogeneous and massively complex, making generic query optimizers untenable for many customers and scenarios. As a result, it is important to specialize these optimizers to instances of the workloads. In this paper, we continue a recent line of work in steering a query optimizer towards better plans for a given workload, and make major strides in pushing previous research ideas to production deployment. Along the way we solve several operational challenges including, making steering actions more manageable, keeping the costs of steering within budget, and avoiding unexpected performance regressions in production. Our resulting system, QQ-advisor, essentially externalizes the query planner to a massive offline pipeline for better exploration and specialization. We discuss various aspects of our design and show detailed results over production SCOPE workloads at Microsoft, where the system is currently enabled by default.
Estimating environmental efficiency and Kuznets curve for India
Creators: name: Jena, Pradyot Ranjan
name: Jena, Pradyot Ranjan
Publisher: name: Unknown
Year: 2009
Subjects: subject: Environmental Economics and Policy
subject: Production Economics
subject: Productivity Analysis
subject: India
subject: environmental productivity
subject: productivity measures
subject: Kuznets Curve

description: As a result of India's extremely rapid economic growth, the scale and seriousness of environmental problems are no longer in doubt. Whether pollution abatement technologies are utilized more efficiently is crucial in the analysis of environmental management because it influences the cost of alternative production and pollution abatement technologies. In this study, I use state–level industry data of sulfur dioxide, nitrogen dioxide, and suspended particular matter over the period 1991–2003. Employing recently developed productivity measurement technique, it is shown that overall environmental productivities decrease over time in India. Furthermore, I analyze the determinants of environmental productivities and find environmental Kuznets curve type relationship between environmental productivity and income. Panel analysis results show that the scale effect dominates over the technique effect.
Locating the Warm-Hot Intergalactic Medium in the Simulated Local Universe
Creators: name: Yoshikawa, K.
name: Dolag, K.
name: Suto, Y.
name: Sasaki, S.
name: Yamasaki, N. Y.
name: Ohashi, T.
name: Mitsuda, K.
name: Tawara, Y.
name: Fujimoto, R.
name: Furusho, T.
name: Furuzawa, A.
name: Ishida, M.
name: Ishisaki, Y.
name: Takei, Y.
Publisher: name: arXiv
Year: 2004
Subjects: subject: Astrophysics (astro-ph)
subject: FOS: Physical sciences

description: We present an analysis of mock spectral observation of warm-hot intergalactic medium (WHIM) using a constrained simulation of the local universe. The simulated map of oxygen emission lines from local WHIM reproduces well the observed structures traced by galaxies in the real local universe. We further attempt to perform mock observations of outer parts of simulated Coma cluster and A3627 adopting the expected performance of DIOS (Diffuse Intergalactic Oxygen Surveyor), which is proposed as a dedicated soft X-ray mission to search for cosmic missing baryons. We find that WHIMs surrounding nearby clusters are detectable with a typical exposure time of a day, and thus constitute realistic and promising targets for DIOS. We also find that an X-ray emitting clump in front of Coma cluster, recently reported in the XMM-Newton observation, has a counterpart in the simulated local universe, and its observed spectrum can be well reproduced in the simulated local universe if the gas temperature is set to the observationally estimated value.
description: 25 pages, 3 tables, 16 figures. Accepted for publication in PASJ. High resolution PS/PDF files are available at http://www-utap.phys.s.u-tokyo.ac.jp/~kohji/research/x-ray/index.html
Teleoperation from movable bases : modeling, analysis, design and experiments with a hydraulic motion platform
Creators: name: Sirouspour, Mohammad Reza
Publisher: name: University of British Columbia
Year: 2009

description: There are manual control and teleoperation systems in which the operator is subject to base motion. Examples are aircraft piloting and joystick control of heavy hydraulic machines such as excavators. This thesis presents a new framework for the modeling, analysis, design and evaluation of controllers for teleoperation/manual control from movable bases. First, a general model for teleoperation/manual control from movable bases is presented. Second, models for the operator dynamics are introduced and identified experimentally. Third, a novel robust ^-synthesis based control system design approach is proposed that addresses robust stability and performance issues. The approach is illustrated by a prototype single-degree-offreedom manual control task in which the operator positions his/her base, a hydraulic motion simulator, using a force-feedback joystick. The designed controllers are robustly stable with respect to parametric uncertainties in the arm/joystick as well as the feedthrough dynamics, and achieve a desired level of performance based on relevant measures. The proposed methods are compared with controllers that ignore the base motion through analysis and a set of experiments. The robust controllers suppress the operator-induced oscillations and produce well-damped responses, whereas the fixed base controllers become unstable. Motivated by the need for high performance motion simulation in the evaluation of controllers for feedthrough cancellation, the position control of mechanical systems driven by hydraulic actuators is studied. This includes single-cylinder hydraulic servo-systems and multipledegree- of-freedom hydraulic robots. Nonlinear dynamics of the actuators and nonlinear rigid body dynamics are considered in the model of hydraulic robots. For single-degree-of-freedom systems, valve dynamics are also included. Parametric uncertainties are allowed in these models. Using the backstepping technique, novel nonlinear and adaptive/nonlinear control laws are proposed that incorporate the system dynamics into their design. It is proven via Lyapunov analysis that the closed-loop systems are stable and that the tracking errors converge to zero under the proposed feedback laws. The effectiveness of these approaches is demonstrated through a series of simulations and experiments carried out with the UBC hydraulic motion simulator. Finally, a numerical approach is developed to optimize the feedback gains for a simplified version of the proposed nonlinear controllers for hydraulic servo-systems.
REGULAÇÃO E DESAFIOS NA EVOLUÇÃO DA INTELIGÊNCIA ARTIFICIAL: IMPACTOS NA RESPONSABILIDADE CIVIL
Creators: name: Lucas Rocha Andrade
Publisher: name: Zenodo
Year: 2025

description: Este artigo aborda os desafios jurídicos e regulatórios emergentes decorrentes da evolução da inteligência artificial (IA), com foco especial nas implicações do machine learning para a responsabilidade civil. A capacidade da IA de agir de maneira autônoma e de aprender com suas próprias experiências desafia as abordagens tradicionais de causalidade e imputação de culpa, fundamentais para a reparação de danos. O trabalho explora como essas inovações tecnológicas diluem o nexo causal entre a conduta danosa e a programação inicial, dificultando a atribuição de responsabilidade ao programador ou fornecedor do sistema. Além disso, discute-se a necessidade urgente de desenvolver um marco regulatório robusto que consiga equilibrar a proteção dos direitos individuais e a promoção da inovação, sem sufocar o progresso tecnológico. Por fim, o artigo reforça a importância de uma regulação ética que considere os vieses algorítmicos e assegure a justiça na aplicação dessas tecnologias, garantindo que a IA continue a beneficiar a sociedade enquanto minimiza os riscos associados ao seu uso.
Multivariate Relations Aggregation Learning in Social Networks
Creators: name: Xu, Jin
name: Yu, Shuo
name: Sun, Ke
name: Ren, Jing
name: Lee, Ivan
name: Pan, Shirui
name: Xia, Feng
Publisher: name: arXiv
Year: 2020
Subjects: subject: Social and Information Networks (cs.SI)
subject: Machine Learning (cs.LG)
subject: FOS: Computer and information sciences

description: Multivariate relations are general in various types of networks, such as biological networks, social networks, transportation networks, and academic networks. Due to the principle of ternary closures and the trend of group formation, the multivariate relationships in social networks are complex and rich. Therefore, in graph learning tasks of social networks, the identification and utilization of multivariate relationship information are more important. Existing graph learning methods are based on the neighborhood information diffusion mechanism, which often leads to partial omission or even lack of multivariate relationship information, and ultimately affects the accuracy and execution efficiency of the task. To address these challenges, this paper proposes the multivariate relationship aggregation learning (MORE) method, which can effectively capture the multivariate relationship information in the network environment. By aggregating node attribute features and structural features, MORE achieves higher accuracy and faster convergence speed. We conducted experiments on one citation network and five social networks. The experimental results show that the MORE model has higher accuracy than the GCN (Graph Convolutional Network) model in node classification tasks, and can significantly reduce time cost.
description: 11 pages, 6 figures