cometadata/datacite-rtg-text-other-reclassification-records huggingface dataset:
Via Lattea, una galassia di mondi con oceani
Creators: Maura Sandri
Publisher: name: Media Inaf
Year: 2021

Secondo un nuovo studio dell'Università di Copenaghen, Terra, Venere e Marte sono stati creati da piccole particelle di polvere contenenti ghiaccio e carbonio. In accordo con questo studio, molti pianeti nella Via Lattea potrebbero avere le stesse quantità di acqua e carbonio della Terra e, con le giuste temperature, ospitare la vita. Tutti i dettagli su Science Advances
Quantum phase transitions in the Fermi-Bose Hubbard model
Creators: name: Carr, L. D.
name: Holland, M. J.
Publisher: name: arXiv
Year: 2005
Subjects: subject: Other Condensed Matter (cond-mat.other)
subject: FOS: Physical sciences

description: We propose a multi-band Fermi-Bose Hubbard model with on-site fermion-boson conversion and general filling factor in three dimensions. Such a Hamiltonian models an atomic Fermi gas trapped in a lattice potential and subject to a Feshbach resonance. We solve this model in the two state approximation for paired fermions at zero temperature. The problem then maps onto a coupled Heisenberg spin model. In the limit of large positive and negative detuning, the quantum phase transitions in the Bose Hubbard and Paired-Fermi Hubbard models are correctly reproduced. Near resonance, the Mott states are given by a superposition of the paired-fermion and boson fields and the Mott-superfluid borders go through an avoided crossing in the phase diagram.
description: 4 pages, 3 figures
RISK AVERSION, UNCERTAINTY AVERSION, AND VARIATION AVERSION IN APPLIED COMMODITY PRICE ANALYSIS
Creators: name: Frechette, Darren L.
name: Wen, Fang-I
name: Frechette, Darren L.
name: Wen, Fang-I
Publisher: name: Unknown
Year: 2002
Subjects: subject: Demand and Price Analysis
subject: Marketing
subject: FOS: Economics and business

description: Standard models of hedging behavior assume that either hedgers wish to minimize net price variation or they wish to balance variation versus profits. These models treat variation as risk and fail to distinguish between variation that is random and variation that is not random over time. Newer models of decision making differentiate between random and nonrandom variation somewhat, but they inadequately distinguish variation from risk. This paper reviews the distinctions among variation, uncertainty, and risk and calculates optimal hedge ratios for two models addressing the distinction. Empirical optimal hedge ratios typically decline toward zero when variation aversion is included in the models. These results may help explain why hedgers commonly hedge less than recommended by the standard models.
Acoustic variability among male gladiator frogs, Boana goiana (Lutz, 1968) (Anura: Hylidae): an 18-year analysis across several reproductive seasons
Creators: name: Tainã L. Andreani
name: Bastos, Rogério P.
name: Tailise M. Dias
name: Prado, Cynthia P. A.
name: Morais, Alessandro R.
Publisher: name: Brill Online
Year: 2020
Subjects: subject: 60399 Evolutionary Biology not elsewhere classified
subject: FOS: Biological sciences

description: Male anurans emit different call types in specific social contexts. Such calls represent a communication pathway for species recognition, mate choice, and male-male competition mediation. The acoustic parameters of these calls can be under directional and/or stabilizing selection due to female choice, which influences intra- and inter-individual call variation. Herein, we investigated the inter-year variation of the advertisement and aggressive calls of the gladiator frog Boana goiana, analysing a temporal series encompassing 18 years of sampling (1996−2014). We measured and analysed the following acoustic parameters: call duration, call repetition rate, number of pulses, pulse duration, pulse repetition rate, and dominant frequency. For both call types, the dominant frequency was classified as a static parameter (CVintra<5%), while call duration was a dynamic parameter (CVintra >12%). The advertisement call of B. goiana presents the attributes that could allow individual recognition in the chorus, and we suggest that the aggressive calls might also be important for the individual recognition process. Pulse duration of the advertisement and aggressive calls decreased over the years, as well as the repetition rate of the aggressive calls, which could be related to male body size decrease over the years probably related to habitat alteration. This study provides data on the variation of anuran acoustic features over the longest time span ever analysed. Such studies are less invasive and useful for conservation purposes, since they can detect changes in the reproductive behaviour of populations that might be under environmental modification pressure.
Non-invasive quantitative imaging of selective microstructure-sizes with magnetic resonance
Creators: name: Capiglioni, Milena
name: Zwick, Analia
name: Jimenez, Pablo
name: Alvarez, Gonzalo A.
Publisher: name: arXiv
Year: 2020
Subjects: subject: Medical Physics (physics.med-ph)
subject: Applied Physics (physics.app-ph)
subject: Quantitative Methods (q-bio.QM)
subject: Quantum Physics (quant-ph)
subject: FOS: Physical sciences
subject: FOS: Biological sciences

description: Extracting reliable and quantitative microstructure information of living tissue by non-invasive imaging is an outstanding challenge for understanding disease mechanisms and allowing early stage diagnosis of pathologies. Magnetic Resonance Imaging is the favorite technique to pursue this goal, but still provides resolution of sizes much larger than the relevant microstructure details on in-vivo studies. Monitoring molecular diffusion within tissues, is a promising mechanism to overcome the resolution limits. However, obtaining detailed microstructure information requires the acquisition of tens of images imposing long measurement times and results to be impractical for in-vivo studies. As a step towards solving this outstanding problem, we here report on a method that only requires two measurements and its proof-of-principle experiments to produce images of selective microstructure sizes by suitable dynamical control of nuclear spins with magnetic field gradients. We design microstructure-size filters with spin-echo sequences that exploit magnetization "decay-shifts" rather than the commonly used decay-rates. The outcomes of this approach are quantitative images that can be performed with current technologies, and advance towards unravelling a wealth of diagnostic information based on microstructure parameters that define the composition of biological tissues.
description: 9 pages, 5 figures
A USER'S GUIDE TO UNDERSTANDING BASIS AND BASIS BEHAVIOR IN MULTIPLE COMPONENT FEDERAL ORDER MILK MARKETS
Creators: name: Thraen, Cameron S.
name: Thraen, Cameron S.
Publisher: name: Unknown
Year: 2002
Subjects: subject: Livestock Production/Industries
subject: Marketing
subject: FOS: Economics and business

description: What are the general ideas behind a futures contract price and the concept of the Basis calculation? The Class 3 milk futures contract traded at the Chicago Mercantile present opportunities for you to forward price your milk if your milk is pooled in a multiple component market such as Federal Order #33. The use of a Class 3 or Class 4 milk contract allows a producer to forward price the butterfat, protein and other solids components of his milk production in multiple-component pricing federal orders or to forward price butterfat and skim in fat/skim federal order markets. Using the futures instruments to protect against uncertain market prices is a new revenue management tool for the dairy industry. Likewise, the use of a Class 3 or Class 4 contract allows a dairy product manufacturer (buyer of liquid milk) to forward price the butterfat, protein and other solids components of his liquid milk needs to protect against rising prices. The use of futures markets to accurately forward price milk either as an output or as an input necessitates that one must know the relative cash price/futures price relationships that are captured in what is called basis. This article will define the general concept of basis as it is used in futures and options markets and how it can be calculated for a milk producer who intends to use Class 3/4 futures contracts as a means to hedge against price declines in a multiple component market. The focus in this paper will be on the Class 3 futures contract and to multiple-component Federal Order markets. The use of the other class contract, the Class 4 futures contract, raises additional issues and will be discussed in a sequel to this paper.
Il disordine che dà vita alle stelle più massicce
Creators: Valentina Guglielmo
Publisher: name: Media Inaf
Year: 2021

Trovata grazie all’array di radiotelescopi Alma la prima prova osservativa del fatto che le stelle più massicce si formano seguendo un processo diverso da quello di stelle come il Sole. La fase principale di accrescimento in massa che consentirebbe loro di diventare così pesanti avverrebbe attraverso filamenti multidirezionali e getti di materia. Media Inaf ha intervistato il primo autore, Ciriaco Goddi – astrofisico sardo oggi nei Paesi Bassi
Primordial Black Holes - Recent Developments
Creators: name: Carr, B. J.
Publisher: name: arXiv
Year: 2005
Subjects: subject: Astrophysics (astro-ph)
subject: FOS: Physical sciences

description: Recent developments in the study of primordial black holes (PBHs) will be reviewed, with particular emphasis on their formation and evaporation. PBHs could provide a unique probe of the early Universe, gravitational collapse, high energy physics and quantum gravity. Indeed their study may place interesting constraints on the physics relevant to these areas even if they never formed. In the "early Universe" context, particularly useful constraints can be placed on inflationary scenarios, especially if evaporating PBHs leave stable Planck-mass relicts. In the "gravitational collapse" context, the existence of PBHs could provide a unique test of the sort of critical phenomena discovered in recent numerical calculations. In the "high energy physics" context, information may come from gamma-ray bursts (if a subset of these are generated by PBH explosions) or from cosmic rays (if some of these derive from evaporating PBHs). In the "quantum gravity" context, the formation and evaporation of small black holes could lead to observable signatures in cosmic ray events and accelerator experiments, providing there are extra dimensions and providing the quantum gravity scale is around a TeV.
description: 12 pages, 6 figures, 22nd Texas Symposium at Stanford 12-17 December 2004
HEDGING SPOT CORN: AN EXAMINATION OF THE MINNEAPOLIS GRAIN EXCHANGE'S CASH SETTLED CORN CONTRACT
Creators: name: Sanders, Dwight R.
name: Greer, Tracy D.
name: Sanders, Dwight R.
name: Greer, Tracy D.
Publisher: name: Unknown
Year: 2002
Subjects: subject: Crop Production/Industries
subject: Marketing
subject: FOS: Economics and business

description: This research examines the potential basis behavior and hedging effectiveness for the Minneapolis Grain Exchange's (MGE) cash settled corn contract. MGE futures cash settle to the National Corn Index (NCI) calculated by Data Transmission Network (DTN). Focusing on seven regions in Illinois, the data suggest that NCI Futures offer potential advantages over the existing Chicago Board of Trade (CBOT) corn futures. In particular, nearby basis variability could be reduced by nearly one-half from 8.8 cents per bushel to 4.5 cents per bushel, and hedging effectiveness may increase from an average of 80% for the CBOT to 93% for the NCI.
Topological superconductivity induced by a triple-Q magnetic structure
Creators: name: Bedow, Jasmin
name: Mascot, Eric
name: Posske, Thore
name: Uhrig, Götz S.
name: Wiesendanger, Roland
name: Rachel, Stephan
name: Morr, Dirk K.
Publisher: name: arXiv
Year: 2020
Subjects: subject: Superconductivity (cond-mat.supr-con)
subject: Mesoscale and Nanoscale Physics (cond-mat.mes-hall)
subject: FOS: Physical sciences

description: We demonstrate that the recently discovered triple-Q (3Q) magnetic structure, when embedded in a magnet-superconductor hybrid (MSH) system, gives rise to the emergence of topological superconductivity. We investigate the structure of chiral Majorana edge modes at domain walls, and show that they can be distinguished from trivial in-gap modes through the spatial distribution of the induced supercurrents. Finally, we show that topological superconductivity in 3Q MSH systems is a robust phenomenon that does not depend on the relative alignment of the magnetic and superconducting layers, or on the presence of electronic degrees of freedom in the magnetic layer.
description: 5 pages, 4 figures, plus supplemental information
Two-dimensional hydrodynamic core-collapse supernova simulations with spectral neutrino transport. I. Numerical method and results for a 15 M_sun star
Creators: name: Buras, R.
name: Rampp, M.
name: Janka, H. -Th.
name: Kifonidis, K.
Publisher: name: arXiv
Year: 2005
Subjects: subject: Astrophysics (astro-ph)
subject: FOS: Physical sciences

description: Supernova models with a full spectral treatment of the neutrino transport are presented, employing the Prometheus/Vertex neutrino-hydrodynamics code with a ``ray-by-ray plus'' approximation for treating two- (or three-) dimensional problems. The method is described in detail and critically assessed with respect to its capabilities, limitations, and inaccuracies in the context of supernova simulations. In this first paper of a series, 1D and 2D core-collapse calculations for a (nonrotating) 15 M_sun star are discussed, uncertainties in the treatment of the equation of state -- numerical and physical -- are tested, Newtonian results are compared with simulations using a general relativistic potential, bremsstrahlung and interactions of neutrinos of different flavors are investigated, and the standard approximation in neutrino-nucleon interactions with zero energy transfer is replaced by rates that include corrections due to nucleon recoil, thermal motions, weak magnetism, and nucleon correlations. Models with the full implementation of the ``ray-by-ray plus'' spectral transport were found not to explode, neither in spherical symmetry nor in 2D with a 90 degree lateral wedge. The success of previous 2D simulations with grey, flux-limited neutrino diffusion can therefore not be confirmed. Omitting the radial velocity terms in the neutrino momentum equation leads to ``artificial'' explosions by increasing the neutrino energy density in the convective gain layer by about 20--30% and thus the integral neutrino energy deposition in this region by about a factor of two. (abbreviated)
description: 46 pages plus 13 pages online material; 49 figures; referee's comments included, version accepted by Astronomy & Astrophysics
ACTUAL FARMER MARKET TIMING
Creators: name: Brorsen, B. Wade
name: Anderson, Kim B.
name: Brorsen, B. Wade
name: Anderson, Kim B.
Publisher: name: Unknown
Year: 2002
Subjects: subject: Marketing
subject: FOS: Economics and business

description: One maxim that has been circulating among farmers is that most farmers sell in the lower third of the market. This maxim is soundly rejected using data from Oklahoma elevators. In fact, roughly half of producers sell in the upper third of the market. Thus, there does not seem to be a great need for producers to hire a market advisor to do their marketing for them. But, some farmers do store longer than is optimal and they could be encouraged to sell sooner after harvest. In the short run, farmers sold after price increases and held after price decreases. Price movements in the days after a large number of sales were no different than price movements after few sales. While farmers are noise traders in the short run, it does appear that they are responding to long-run market signals. Even though there may be room for improvement, it appears that farmers are doing a good job of deciding when to sell their wheat.
On the correlation of Short Gamma--Ray Bursts and Clusters of galaxies
Creators: name: Ghirlanda, G.
name: Magliocchetti, M.
name: Ghisellini, G.
name: Guzzo, L.
Publisher: name: arXiv
Year: 2005
Subjects: subject: Astrophysics (astro-ph)
subject: FOS: Physical sciences

description: We cross correlate Gamma--Ray Bursts and X--Ray selected clusters of galaxies at z\leq0.45. We find a positive 2σsignal for the angular cross--correlation function w_{bc}(θ) on scales θ\leq 3 deg between short GRBs and clusters. Conversely, no correlation is found between clusters and the population of long GRBs. The comparison with the cluster autocorrelation function shows that short GRBs do not trace the cluster distribution as not all short GRBs are found in clusters. A higher signal in w_{bc}(θ) is found if we only consider the cluster population up to z=0.1. By comparing the short burst autocorrelation function with model predictions we then constrain short bursts to mostly originate within \sim 270 Mpc (i.e. z\leq 0.06). Our analysis also reveals that short GRBs are better correlated with ``normal'' galaxies. The double compact object merger model for short GRBs would associate them preferentially to early--type galaxies but the present statistics do not allow us to exclude that at least a fraction of these events might also take place in late--type galaxies, in agreement with recent evidences.
description: 5 pages, 5 figures, accepted for publication in MNRAS
La stella di neutroni nascosta nel cuore di Sn 1987A
Creators: Ufficio stampa Inaf
Publisher: name: Media Inaf
Year: 2021

Si tratta di un oggetto rimasto nel mistero per oltre 30 anni, al centro della “regina delle supernove”. Grazie a uno studio guidato da ricercatori dell’Università di Palermo e dell’Inaf, è stata individuata e caratterizzata la sorgente energetica, risultata compatibile con una pulsar wind nebula
Food-chain competition influences gene's size
Creators: name: Dembska, Marta
name: Dudek, M. R.
name: Stauffer, D.
Publisher: name: arXiv
Year: 2006
Subjects: subject: Populations and Evolution (q-bio.PE)
subject: FOS: Biological sciences

description: We have analysed an effect of the Bak-Sneppen predator-prey food-chain self-organization on nucleotide content of evolving species. In our model, genomes of the species under consideration have been represented by their nucleotide genomic fraction and we have applied two-parameter Kimura model of substitutions to include the changes of the fraction in time. The initial nucleotide fraction and substitution rates were decided with the help of random number generator. Deviation of the genomic nucleotide fraction from its equilibrium value was playing the role of the fitness parameter, $B$, in Bak-Sneppen model. Our finding is, that the higher is the value of the threshold fitness, during the evolution course, the more frequent are large fluctuations in number of species with strongly differentiated nucleotide content; and it is more often the case that the oldest species, which survive the food-chain competition, might have specific nucleotide fraction making possible generating long genes
description: 11 pages including 7 figures
Gössmann, Elisabeth: Religiöse Herkunft - profane Zukunft?
Creators: name: Oehler, Harald
Publisher: name: Ökumenische Rundschau
Year: 2025

description: Ökumenische Rundschau, Bd. 15 Nr. 2 (1966): Ökumenische Rundschau, Band 15, Heft 2
Building an image? : Considering the mid-nineteenth century English country house as an architectural expression of middle class values
Creators: name: Merling, Ann
Publisher: name: University of British Columbia
Year: 2009

description: Mid-nineteenth century England saw an unprecedented building of country houses. This thesis addresses the issues of who was primarily responsible and why the resultant country houses appeared, in both architectural expression and spatial organization, so different from those of preceding periods. Evidence suggests that a significant number of nineteenth century country houses were financially underwritten by middle class owners. An examination of an exemplar country house, Bear Wood, posits that it was specifically designed and constructed to accommodate certain middle class values, a means by which this expanding and increasingly influential class could contribute towards establishing and legitimating its identity as distinct within the social order. Although a decisive defence cannot be offered against the generally inherent and tacit assumptions that the ambition of the middle class investor was to join the ranks of the established landed aristocracy, it is suggested that many of the innate precepts traditionally associated with the stewardship of a country house were used to underpin the identity of the nineteenth century middle class. This work reflects the axiom that, despite gradations of wealth and subsequent levels of rank, the unity and influence of the nineteenth century middle class lay in its common adherence to attitudes and values with which it became particularly associated. Whilst it is acknowledged that one country house cannot be considered a prototypal example to represent a heterogenous middle class, the significant wealth of the owner of Bear Wood did allow him to encapsulate, in architectural form, many of the tenets to which his class commonly subscribed. Evidence of the diversity with which that class represented itself was extrapolated from Bear Wood, a diversity that ranged from a strident and acicular announcement of entrepreneurial acumen and success, to a succinct and subtle representation of domestic values and standards of propriety. That so many nineteenth century middle class tenets were to successfully permeate and influence the entire social order, to be emulated at both ends of the social scale, indicates the significance that can be attached to the architectural expression and the spatial organization of a country house like Bear Wood.
Nella “pelle” del Sole a studiare i campi magnetici
Creators: Giuseppe Fiasconaro
Publisher: name: Media Inaf
Year: 2021

Arrivano dall’esperimento su razzo suborbitale Clasp2 le prime misure dei segnali di polarizzazione relativamente deboli prodotti da vari meccanismi fisici nelle righe spettrali dello spettro ultravioletto della cromosfera del Sole. Tutti i dettagli su Science Advances
CAN STRUCTURAL CHANGE EXPLAIN CHANGES IN RETURNS TO TECHNICAL ANALYSIS?
Creators: name: Kidd, Willis V.
name: Brorsen, B. Wade
name: Kidd, Willis V.
name: Brorsen, B. Wade
Publisher: name: Unknown
Year: 2002
Subjects: subject: Marketing
subject: FOS: Economics and business

description: Returns to managed futures funds and Commodity Trading Advisors (CTAs) have decreased dramatically during the last several years. Since these funds overwhelmingly use technical analysis, this research examines futures prices to determine if there is evidence of a structural change in futures price movements that could explain the reduction in fund returns. Bootstrap tests are used to test significance of a change in statistics related to daily returns, close-to-open changes, breakaway gaps, and serial correlation. Results indicate that several statistics have changed across a broad range of commodities indicating futures price fluctuations have changed. The lower price volatility, decreased price reaction time, and decreased serial correlation may partly explain the lower returns from technical analysis.
Testing Gravity on Cosmic Scales: A Case Study of Jordan-Brans-Dicke Theory
Creators: name: Joudaki, Shahab
name: Ferreira, Pedro G.
name: Lima, Nelson A.
name: Winther, Hans A.
Publisher: name: arXiv
Year: 2020
Subjects: subject: Cosmology and Nongalactic Astrophysics (astro-ph.CO)
subject: General Relativity and Quantum Cosmology (gr-qc)
subject: FOS: Physical sciences

description: We provide an end-to-end exploration of a distinct modified gravitational theory in Jordan-Brans-Dicke (JBD) gravity, from an analytical and numerical description of the background expansion and linear perturbations, to the nonlinear regime captured with a hybrid suite of $N$-body simulations, to the parameter constraints from existing cosmological probes. The nonlinear corrections to the matter power spectrum due to baryons, massive neutrinos, and modified gravity are simultaneously modeled and propagated in the cosmological analysis for the first time. In the combined analysis of the Planck CMB temperature, polarization, and lensing reconstruction, Pantheon supernova distances, BOSS measurements of BAO distances, the Alcock-Paczynski effect, and the growth rate, along with the joint ($3\times2$pt) dataset of cosmic shear, galaxy-galaxy lensing, and overlapping redshift-space galaxy clustering from KiDS and 2dFLenS, we constrain the JBD coupling constant, $ω_{\rm BD}>1540$ (95% CL), the effective gravitational constant, $G_{\rm matter}/G=0.997\pm0.029$, the sum of neutrino masses, $\sum m_ν<0.12$ eV (95% CL), and the baryonic feedback amplitude, $B<2.8$ (95% CL), all in agreement with the standard model expectation. We show that the uncertainty in the gravitational theory alleviates the tension between KiDS$\times$2dFLenS and Planck to below $1σ$ and the tension in the Hubble constant between Planck and the direct measurement of Riess et al. (2019) down to ~$3σ$; however, we find no substantial model selection preference for JBD gravity relative to $Λ$CDM. We further show that the neutrino mass bound degrades by up to a factor of three as the $ω_{\rm BD}$ parameterization becomes more restrictive and that a positive shift in $G_{\rm matter}/G$ suppresses the CMB damping tail in a way that might complicate future inferences of small-scale physics. (Abridged)
description: 53 pages, 26 figures, results unchanged, version accepted for publication by PRD. Abstract abridged. Our MCMC chains, likelihood code, and data products are public at https://github.com/sjoudaki/CosmoJBD
A DECISION MODEL TO ASSESS CATTLE FEEDING PRICE RISK
Creators: name: May, Gary J.
name: Lawrence, John D.
name: May, Gary J.
name: Lawrence, John D.
Publisher: name: Unknown
Year: 2002
Subjects: subject: Livestock Production/Industries
subject: Marketing
subject: FOS: Economics and business

description: Traditional break-even/fed cattle price projections do not provide adequate risk information to feeders, investors, lenders, and other stakeholders interested in cattle feeding decisions. The objectives of this study were two-fold: 1) develop a spreadsheet model that could estimate the net income distribution surrounding a cattle placement decision based on historical errors of futures based price forecasts, and 2) determine whether information generated from the model can be used to improve placement and marketing decisions. To accomplish objective 1, model was developed that could estimate the income distribution around a pen of cattle under a cash speculating and short hedge pricing strategy. Distribution estimates were based on 7 alternative forecast horizons and were derived from historical forecast errors. To accomplish objective 2, decision rules were developed that allow the feeder to specify the maximum probability he/she is willing to risk losing a specified level of income. These decision rules were compared to random and naive decision rules by simulating the outcomes over 168 discrete six months feeding periods between 1987 and 2000. Risk averse decision rules were successful in signaling highly unprofitable feeding periods, but also filtered out highly profitable feeding periods.
Hierarchical Triggering of Star Formation by Superbubbles in W3/W4
Creators: name: Oey, M. S.
name: Watson, A. M.
name: Kern, K.
name: Walth, G. L.
Publisher: name: arXiv
Year: 2005
Subjects: subject: Astrophysics (astro-ph)
subject: FOS: Physical sciences

description: It is generally believed that expanding superbubbles and mechanical feedback from massive stars trigger star formation, because there are numerous examples of superbubbles showing secondary star formation at their edges. However, while these systems show an age sequence, they do not provide strong evidence of a causal relationship. The W3/W4 Galactic star-forming complex suggests a three-generation hierarchy: the supergiant shell structures correspond to the oldest generation; these triggered the formation of IC 1795 in W3, the progenitor of a molecular superbubble; which in turn triggered the current star-forming episodes in the embedded regions W3-North, W3-Main, and W3-OH. We present UBV photometry and spectroscopic classifications for IC 1795, which show an age of 3 - 5 Myr. This age is intermediate between the reported 6 - 20 Myr age of the supergiant shell system, and the extremely young ages (10^4 - 10^5 yr) for the embedded knots of ultracompact HII regions, W3-North, W3-Main, and W3-OH. Thus, an age sequence is indeed confirmed for the entire W3/W4 hierarchical system. This therefore provides some of the first convincing evidence that superbubble action and mechanical feedback are indeed a triggering mechanism for star formation.
description: 10 pages, 6 figures; accepted to the Astronomical Journal. Figure 2 included in this submission as JPEG
Data Valley: l’Inaf sceglie il Tecnopolo di Bologna
Creators: Ufficio stampa Inaf
Publisher: name: Media Inaf
Year: 2021

Sottoscritto un protocollo d’intesa tra Regione Emilia-Romagna e Istituto nazionale di astrofisica. Un’opportunità anche per le aziende regionali di inserirsi nelle filiere di sviluppo globale legate alla ricerca aerospaziale. Bonaccini: «Si rafforza un hub al servizio del territorio e del Sistema Italia per vincere la sfida dell’innovazione tecnologica. Potremo attrarre qui scienziati da ogni Paese»
Dragon Fruit: Overview, Nutritional Significance, and Enhancing Value
Creators: name: Rohit Sharmaa, Rimpikab, Abhishek Thakurc, Ruchi Sharmad
Publisher: name: trends in Agriculture Science
Year: 2024

description:  

This article explores the multifaceted aspects of dragon fruit, also known as pitaya, emphasizing its commercial cultivation, nutritional values, medicinal properties, and antioxidant activities. Originating from tropical regions, dragon fruit is now grown globally for its adaptability and health benefits. The fruit comes in various shapes and colors, making it unique and appealing. Notably, its nutritional profile includes vitamins, minerals, fiber, glucose, and fructose, with high concentrations of vitamin C, phosphorus, and antioxidants. The medicinal properties of dragon fruit are attributed to bioactive compounds, including betalains, flavonoids, and polyphenols. These substances contribute to heart health, cancer prevention, and the reduction of cardiovascular risks. The article highlights the nutritional richness of different dragon fruit species and their varied uses, including the extraction of beneficial compounds from stems, blossoms, and peels. Moreover, the antioxidant activities of dragon fruit are underscored, with a focus on the higher antioxidant content in peels compared to pulp. The article concludes by discussing the value addition of dragon fruit in the food and cosmetic industries, showcasing its versatility in products such as jams, jellies, drinks, and cosmetics. In summary, the visually striking dragon fruit emerges as a nutritionally rich and versatile tropical plant with diverse applications, contributing to its increasing global cultivation.
Aurore in Tasmania quando nord e sud s’invertirono
Creators: Paolo Soletta
Publisher: name: Media Inaf
Year: 2021

Il carotaggio di un sedimento risalente a 41mila anni fa ha fornito la prima testimonianza nel continente australiano di un evento paleomagnetico – chiamato “Escursione di Laschamps” – in cui, a seguito dell’inversione del campo magnetico, fu possibile assistere a spettacolari aurore polari anche a latitudini temperate
Un neutrino dal cuore dell’oscurità, fino alla Terra
Creators: Maura Sandri
Publisher: name: Media Inaf
Year: 2021

Il 1° ottobre 2019 IceCube ha registrato un neutrino la cui energia era almeno dieci volte l'energia massima che può essere raggiunta nel Large Hadron Collider, nella stessa direzione di un evento di distruzione mareale individuato al Monte Palomar sei mesi prima. Si tratta della prima particella ricondotta a un tale evento e fornisce la prova che queste catastrofi cosmiche possono costituire potenti acceleratori naturali di particelle. La scoperta,  che dimostra le enormi potenzialità dell’astronomia multimessaggera, è descritta su Nature Astronomy
Building a Community of Canadian Dataverse Collection Administrators: Consortial Collaboration and Communities of Practice
Creators: Goodchild, Meghan
Huck, John
Publisher: name: University of Alberta Library
Year: 2025

In response to the open science movement and the growth of funder and journal policies, researchers are increasingly looking for support in depositing and sharing their research data. In Canada, academic libraries have provided leadership to support provisioning and coordinating research data management (RDM) support, resources, and infrastructure over the past several decades. As one example of a library-led initiative, Borealis, the Canadian Dataverse Repository (https://borealisdata.ca/), is a national, bilingual, multidisciplinary research data repository, based on the open-source Dataverse software and provided in partnership with regional academic library consortia and the Digital Research Alliance of Canada. The shared infrastructure supports over seventy-five Canadian institutions and research organizations, each managing their own collection and providing support to their local researchers. The development of the national repository is the direct result of over ten years of collaborative efforts among libraries and librarians across Canada. This chapter situates the development of the national service within the literature around consortial collaboration, communities of practice, and social learning theory. Of importance is the integral, symbiotic relationship between the development of infrastructure and the development of collaborative communities that support the sustainability and viability of the service.
Progress on indium and barium single ion optical frequency standards
Creators: name: Sherman, Jeff A.
name: Trimble, William
name: Metz, Steven
name: Nagourney, Warren
name: Fortson, Norval
Publisher: name: arXiv
Year: 2005
Subjects: subject: Atomic Physics (physics.atom-ph)
subject: FOS: Physical sciences

description: We report progress on 115In+ and 137Ba+ single ion optical frequency standards using all solid-state sources. Both are free from quadrupole field shifts and together enable a search for drift in fundamental constants.
description: 2 pages, 1 figure, submitted to IEEE/LEOS Summer 2005 Topicals conference proceedings
Il segnale Uv e ottico che sfida i modelli delle pulsar
Creators: Ufficio stampa Inaf
Publisher: name: Media Inaf
Year: 2021

Osservati, per la prima volta da una pulsar al millisecondo in fase “esplosiva”, lampi in banda ottica e ultravioletta oltre alle pulsazioni nei raggi X tipiche di questi corpi celesti. La scoperta, guidata da ricercatrici e ricercatori dell’Istituto nazionale di astrofisica e basata anche su osservazioni effettuate con il Telescopio nazionale Galileo, mette alla prova i modelli teorici che descrivono il comportamento delle pulsar in sistemi binari
Avoiding Register Overflow in the Bakery Algorithm
Creators: name: Sayyadabdi, Amirhossein
name: Sharifi, Mohsen
Publisher: name: arXiv
Year: 2020
Subjects: subject: Distributed, Parallel, and Cluster Computing (cs.DC)
subject: FOS: Computer and information sciences

description: Computer systems are designed to make resources available to users and users may be interested in some resources more than others, therefore, a coordination scheme is required to satisfy the users' requirements. This scheme may implement certain policies such as "never allocate more than X units of resource Z". One policy that is of particular interest is the inability of users to access a single resource at the same time, which is called the problem of mutual exclusion. Resource management concerns the coordination and collaboration of users, and it is usually based on making a decision. In the case of mutual exclusion, that decision is about granting access to a resource. Therefore, mutual exclusion is useful for supporting resource access management. The first true solution to the mutual exclusion problem is known as the Bakery algorithm that does not rely on any lower-lever mutual exclusion. We examine the problem of register overflow in real-world implementations of the Bakery algorithm and present a variant algorithm named Bakery++ that prevents overflows from ever happening. Bakery++ avoids overflows without allowing a process to write into other processes' memory and without using additional memory or complex arithmetic or redefining the operations and functions used in Bakery. Bakery++ is almost as simple as Bakery and it is straightforward to implement in real systems. With Bakery++, there is no reason to keep implementing Bakery in real computers because Bakery++ eliminates the probability of overflows and hence it is more practical than Bakery. Previous approaches to circumvent the problem of register overflow included introducing new variables or redefining the operations or functions used in the original Bakery algorithm, while Bakery++ avoids overflows by using simple conditional statements. (the abstract does not end here.)
description: To be presented at the international workshop on Scheduling and Resource Management for Parallel and Distributed Systems (SRMPDS '20)
Experimental demonstration of time coding quantum key distribution
Creators: name: Boucher, William
name: Debuisschert, Thierry
Publisher: name: arXiv
Year: 2005
Subjects: subject: Quantum Physics (quant-ph)
subject: FOS: Physical sciences

description: Time coding quantum key distribution with coherent faint pulses is experimentally demonstrated. A measured 3.3 % quantum bit error rate and a relative contrast loss of 8.4 % allow a 0.49 bit/pulse advantage to Bob.
description: 3 pages, 3 figures, Proceedings of the QELS 2005 conference, Baltimore May 22-27 2005, paper JTuC112
Metalli e “perle rare” nell’anello del Leone
Creators: Marco Malaspina
Publisher: name: Media Inaf
Year: 2021

Osservati per la prima volta nel Leo Ring – un’enorme nube a circa 40 milioni di anni luce da noi – agglomerati di gas con una notevole abbondanza di metalli, dunque in conflitto con l’ipotesi dell’origine primordiale della grande struttura intergalattica. La scoperta, condotta su dati acquisiti con lo spettrometro Muse dell’Eso, è firmata da un team d’astronomi guidato da Edvige Corbelli dell’Inaf di Arcetri
Gensichen, Hans-Werner: Das Problem einer "einheimischen" Theologie
Creators: name: Buttler, Paul-Gerhardt
Publisher: name: Ökumenische Rundschau
Year: 2025

description: Ökumenische Rundschau, Bd. 15 Nr. 2 (1966): Ökumenische Rundschau, Band 15, Heft 2
Cosa faranno Hope, Tianwen-1 e Perseverance
Creators: Valentina Guglielmo
Publisher: name: Media Inaf
Year: 2021

Ora che sono giunti tutt’e tre a destinazione, gli “esploratori marziani“ partiti l’estate scorsa possono iniziare a lavorare. Facciamo dunque il punto sugli obiettivi scientifici delle missioni degli Emirati Arabi, della Cina e degli Stati Uniti, e vediamo quali possibilità lasceranno aperte per la futura esplorazione del programma europeo ExoMars
ANALYSIS OF PRODUCTION STRUCTURE OF THE CANADIAN PULP AND PAPER INDUSTRY : 1961-1996
Creators: name: Habteyonas, Michael
name: Habteyonas, Michael
Publisher: name: Unknown
Year: 2004
Subjects: Resource /Energy Economics and Policy

description: A translog cost function with factor inputs of capital, labor, energy and materials was estimated for the Canadian pulp and paper industry over the period of 1961 to 1996. The results show that, the production technology can not be specified by a Cobb-Douglas production function and it is not Hicks- neutral. It was found out that, the industry is characterized by labor-saving and capital, energy and materials-using technical change. The estimated production function indicated the existence of economies of scale, although the size of the scale is not as large as those estimated for the European Union and the United States pulp and paper industries. Estimates for Allen's elasticities of substitution show that, all the factor inputs were found to be highly substitutable among each other. In addition, estimates for price elasticities were found to be sensitive to a change in their own price and relatively speaking, the demand for capital was found to be more responsive to changes in prices of energy and materials and the demand for materials was also found to be sensitive to changes in price of labor and energy.
E se Planet Nine fosse solo un incidente statistico?
Creators: Luca Nardi
Publisher: name: Media Inaf
Year: 2021

Un nuovo studio internazionale tenta di mettere in crisi l’ipotesi planetaria più ambiziosa dell’ultimo decennio: l’esistenza di Planet Nine, un nono pianeta nel Sistema solare situato oltre l’orbita di Nettuno. All’origine dell’ipotesi sulla sua esistenza potrebbe esserci un cosiddetto “bias di selezione”
"It was like the gauntlet was thrown down" : the No! to APEC story
Creators: name: Larcombe, Andrew
Publisher: name: University of British Columbia
Year: 2009

description: Ad hoc social movement coalitions are made up of diverse groups that come together to maximise the use of limited resources. Once formed, they face a dilemma. Coalition logic holds that given the limited time frame and instrumental objectives of the organisation, resources should be disproportionately invested in the visible sphere of action. However, this instrumental emphasis ignores the need to invest resources in the 'submerged' sphere of membership intercommunication. As a result tensions which have their root in divergent ideologies, traditions and histories of resistance can threaten the coalition's collective identity. This thesis is about one such organisation, the No! To APEC (NTA) coalition, one of three groups that made up the movement to oppose the APEC Economic Leader's Meeting in Vancouver held in November 1997. NTA, made up of small leftwing grassroots groups, built a campaign around resistance to "imperialist globalisation." It organised community education, an international conference and a march and rally. Although it succeeded in meeting its objectives, a fracture occurred between the largest and most consolidated member group and the other unconsolidated grouping made up of individuals and representatives of small organisations. The fracture caused a disconnection between the local and the international priorities set by the organisation at its outset. In this study I examine the process that led to this outcome. In particular I identify the importance of establishing a capacity for reflexively monitoring the actions and interactions of members. While consensus is not a pre-requisite for solidarity, disputes arising from different perspectives and membership tactics may jeopardise organisational unity. Providing a limited space for evaluating conflicting validity claims and organisational dynamics may help to preserve unity during the active phase of a coalition's mobilisation. The methods used to obtain data for this study were participant observation and interviewing. I spent six months as an activist-researcher with the coalition and I interviewed activists from the three main APEC opposition groups. Although the main focus of this study is on the political and organisational evolution of the NTA coalition, I broaden the discussion to argue that ad hoc coalitions play an important role in generating 'social capital' or 'social movement connectivity.' Social solidarity generated in the course of short-term political action increases the potential for further action mobilisation in social movement networks and communities. In the final part of the thesis I review literature on globalisation and social movements. Combined with what has been learned about coalitions in the previous chapters, this exercise provides a context for examining the APEC opposition movement and, by extension, the prospects for building transnational movements and a counter-hegemonic historical bloc against imperialist globalisation.
How chemistry controls electron localization in 3d1 perovskites: A Wannier-function study
Creators: name: Pavarini, E.
name: Yamasaki, A.
name: Nuss, J.
name: Andersen, O. K.
Publisher: name: arXiv
Year: 2005
Subjects: subject: Strongly Correlated Electrons (cond-mat.str-el)
subject: FOS: Physical sciences

description: In the series of 3d1 t2g perovskites, SrVO3--CaVO3--LaTiO3--YTiO3 the transition-metal d electron becomes increasingly localized and undergoes a Mott transition between CaVO3 and LaTiO3. By defining a low-energy Hubbard Hamiltonian in the basis of Wannier functions for the t2g LDA band and solving it in the single-site DMFT approximation, it was recently shown[1] that simultaneously with the Mott transition there occurs a strong suppression of orbital fluctuations due to splitting of the t2g levels. The present paper reviews and expands this work, in particular in the direction of exposing the underlying chemical mechanisms by means of ab initio LDA Wannier functions generated with the NMTO method. The Wannier functions for the t2g band exhibit covalency between the transition-metal t2g, the large cation-d, and the oxygen-p states; this covalency, which increases along the series, turns out to be responsible not only for the splittings of the t2g levels, but also for non-cubic perturbations of the hopping integrals, both of which are decisive for the Mott transition. We find good agreement with the optical and photoemission spectra, with the crystal-field splittings and orbital polarizations recently measured for the titanates, and with the metallization volume for LaTiO3. The metallization volume for YTiO3 is predicted. Using super-exchange theory, we reproduce the observed magnetic orders in LaTiO3 and YTiO3, but the results are sensitive to detail, in particular for YTiO3 which, without the Jahn-Teller distortion, would be AFM C- or A-type, rather than FM. Finally, we show that it possible to unfold the orthorhombic t2g LDA bandstructure to a pseudocubic zone. In this zone, the lowest band is separated from the two others by a direct gap and has a width, W_I, which is significantly smaller than that, W, of the entire t2g band. The progressive GdFeO3-type distortion favours electron localization by decreasing W, by increasing the splitting of the t2g levels and by decreasing W_I. Our conclusions concerning the roles of GdFeO3-type and JT distortions agree with those of Mochizuki and Imada [2].
description: Published version, final. For high resolution figures see http://www.fkf.mpg.de/andersen/docs/pub/abstract2004+/pavarini_02.pdf
Exclusive Electro-Disintegration of 3He at high Q2: II. Decay Function Formalism
Creators: name: Sargsian, M. M.
name: Abrahamyan, T. V.
name: Frankfurt, L. L.
name: Strikman, M. I.
Publisher: name: arXiv
Year: 2005
Subjects: subject: Nuclear Theory (nucl-th)
subject: FOS: Physical sciences

description: Based on the theoretical framework of generalized eikonal approximation we study the two-nucleon emission reactions in high $Q^2$ electro-disintegration of $^3He$. Main aim is to investigate those features of the reaction which can be unambiguously identified with the short range properties of the ground state nuclear wave function. To evaluate the differential cross section we work in the formalism of the decay function which characterizes the property of the ground state wave function as well as the decay properties of final two nucleon spectator system. Our main motivation here is to explore the accessibility of two-- and three--nucleon short range correlations in $^3$He as well as to isolate unambiguously single and double rescattering processes in the reaction dynamics. Our analysis allowed us also to identify new approaches for investigating the role of the practically unknown three-nucleon forces in the ground state wave function of $^3He$.
description: 37 pages, 28 figures