cometadata/datacite-rtg-text-other-reclassification-records huggingface dataset:
Cosmic voids in modified gravity models with massive neutrinos
Creators: name: Contarini, Sofia
name: Marulli, Federico
name: Moscardini, Lauro
name: Veropalumbo, Alfonso
name: Giocoli, Carlo
name: Baldi, Marco
Publisher: name: arXiv
Year: 2020
Subjects: subject: Cosmology and Nongalactic Astrophysics (astro-ph.CO)
subject: FOS: Physical sciences

description: Cosmic voids are progressively emerging as a new viable cosmological probe. Their abundance and density profiles are sensitive to modifications of gravity, as well as to dark energy and neutrinos. The main goal of this work is to investigate the possibility of exploiting cosmic void statistics to disentangle the degeneracies resulting from a proper combination of $f(R)$ modified gravity and neutrino mass. We use N-body simulations to analyse the density profiles and size function of voids traced by both dark matter particles and haloes. We find clear evidence of the enhancement of gravity in $f(R)$ cosmologies in the void density profiles at $z=1$. However, these effects can be almost completely overridden by the presence of massive neutrinos because of their thermal free-streaming. Despite the limited volume of the analysed simulations does not allow us to achieve a statistically relevant abundance of voids larger than $40 \ \mathrm{Mpc}/h$, we find that the void size function at high redshifts and for large voids is potentially an effective probe to disentangle these degenerate cosmological models, which is key in the prospective of the upcoming wide field redshift surveys.
description: 18 pages, 10 figures, 2 tables, accepted by MNRAS
What we do and do not know about the s-process
Creators: name: Lattanzio, J. C.
name: Lugaro, M. A.
Publisher: name: arXiv
Year: 2005
Subjects: subject: Astrophysics (astro-ph)
subject: FOS: Physical sciences

description: AGB stars are the source for the main component of the $s$-process. Here we discuss both the properties which are reasonably well known and those which still suffer from substantial uncertainties. In the former case, we are fairly sure that the $s$-process contribution from AGB stars comes from masses between about 1 and 3 $\msun$, and the dominant neutron source is the $^{13}$C$(α$,n)$^{16}$O reaction. In the latter category remains the formation mechanism for the $^{13}$C-pocket. Attempts at including rotation seem to inhibit neutron capture reactions. Explaining the observations seems to require a spread in the size of the $^{13}$C-pocket so some stochastic process, such as rotation, must be involved.
description: To be published in Nuclear Physics A; Invited Review for "Nuclei in the Cosmos VIII", Vancouver, July 2004
TRENDS AND DEVELOPMENTS IN UNITED STATES AGRICULTURAL POLICY: 1993-1995
Creators: name: Vande Kamp, Philip R.
name: Runge, C. Ford
name: Vande Kamp, Philip R.
name: Runge, C. Ford
Publisher: name: Unknown
Year: 1994
Subjects: Agricultural and Food Policy

description: A number of factors including budget pressures, emphasis on environmentally sensitive agriculture, emphasis on finding agricultural export markets, and anti-agricultural program sentiment have fueled a climate for change in United States agricultural policy. Whether significant changes will occur depends on the political strength of agricultural interest groups and on the compromises which can be reached between them. Several notable achievements have been accomplished in recent domestic agricultural policy legislation. The 1995 farm bill will define the commodity and conservation programs for the next five years. In addition to domestic developments, there have been history-setting accomplishments in reducing barriers to international agricultural trade. The tri-partite North American Free Trade Agreement became effective January 1, 1994. The Uruguay Round Agreement of the General Agreement on Tariffs and Trade was completed in late 1994 and will become effective in 1995.
THE FOOD SYSTEM IN TRANSITION: AN E.U. PERSPECTIVE
Creators: name: Venturini, Luciano
name: Venturini, Luciano
Publisher: name: Unknown
Year: 2003
Subjects: Agribusiness

description: The purpose of this paper is to analyze the nature and the main dimensions of the transition in European food systems. We examine the main stylized facts in the evolution of food final demand as well as the structural changes and firms' strategies at different stages of food systems. We find the existence of a process of convergence towards an EU food system. Such a process is the result of two main determinants. First, there is a convergence towards a common European consumer who increasingly demands a variety of healthier food products and reveals growing concerns for food safety issues. A second crucial factor is the role played by food retailers in determining the convergence of European competitive environments. We show that retailers' consolidation and strategies affect and determine structural changes at all stages of food system. Finally, the paper examines the new policy implications of these changes and suggests some areas and topics which are likely to become increasingly relevant for future research.
Connecting for learning : four preschool teachers engage in sustained, structured conversation about genuine practice
Creators: name: McCabe, Kathleen Mary
Publisher: name: University of British Columbia
Year: 2009

description: This inquiry is about genuine practice in Early Childhood Education and the value of trusting relationships among child care practitioners as they converse about their practice. This participatory research project outlines the processes and describes the meaning that sustained, stmctured conversation about genuine practice had on four Vancouver area child care practitioners over a six month period. Conversation was used as both a method of collecting data and a process to undertake to improve practice. Conversation provided us with a way to reconstruct and reinterpret our experiences, improve our understanding of ourselves as teachers and our understanding of children, and restructure our personal knowledge of teaching and children. The participants understood being genuine as "being me" and "being connected" to children and themselves. They also spoke of it as acts of resistance against ways of being that can oppress children. I explain why genuine practice is an important concept for educators to discuss and should be used to supplement the current focus on curriculum planning in child care training. Feniinist epistemology, curriculum theory and autobiography have influenced this work. It is also informed by my 20 years of child care practice. This research stems from my desire to know my role as teacher better and to add to the growing knowledge about the value of conversation and genuine practice. Sustained, structured conversation can be a valuable tool for professional development. It can help practitioners become more reflective by providing contexts where they are able to achieve a sense of trust, and listen well to one another. Sustained, structured conversation can also support the improvement of practice when participants refrain from giving advice but ask genuine questions and share stories of their practice. The participants reported that they became more reflective in their work with children as they became reacquainted with their beliefs and values. They showed a greater propensity toward self-questioning as the conversations advanced. The participants also reported that the conversations provided emotional support needed during times of work-related stress and that building relationships outside of the work place was an important feature of the research.
High-pressure synthesis of Dirac materials: layered van der Waals bonded BeN$_4$ polymorph
Creators: name: Bykov, Maxim
name: Fedotenko, Timofey
name: Chariton, Stella
name: Laniel, Dominique
name: Glazyrin, Konstantin
name: Hanfland, Michael
name: Smith, Jesse S.
name: Prakapenka, Vitali B.
name: Mahmood, Mohammad F.
name: Goncharov, Alexander F.
name: Ponomareva, Alena V.
name: Tasnádi, Ferenc
name: Abrikosov, Alexei I.
name: Masood, Talha Bin
name: Hotz, Ingrid
name: Rudenko, Alexander N.
name: Katsnelson, Mikhail I.
name: Dubrovinskaia, Natalia
name: Dubrovinsky, Leonid
name: Abrikosov, Igor A.
Publisher: name: arXiv
Year: 2020
Subjects: subject: Materials Science (cond-mat.mtrl-sci)
subject: FOS: Physical sciences

description: High pressure chemistry is known to inspire the creation of unexpected new classes of compounds with exceptional properties. Here we report the synthesis at ~90 GPa of novel beryllium polynitrides, monoclinic and triclinic BeN4. The triclinic phase, upon decompression to ambient conditions, transforms into a compound with atomic-thick BeN4 layers interconnected via weak van der Waals bonds consisting of polyacetylene-like nitrogen chains with conjugated π-systems and Be atoms in square-planar coordination. Theoretical calculations for a single BeN4 layer show that its electronic lattice is described by a slightly distorted honeycomb structure reminiscent of the graphene lattice and the presence of Dirac points in the electronic band structure at the Fermi level. The BeN4 layer, i.e. beryllonitrene, represents a qualitatively new class of 2D materials that can be built of a metal atom and polymeric nitrogen chains and host anisotropic Dirac fermions.
THE FOUR CATEGORIES OF FORCE IN AFRICAN PHILOSOPHY
Creators: name: Rev. Fr. Franklin, Amaechi Eze, Ph.D.
Publisher: name: TOP Journal
Year: 2024
Subjects: The Four, Categories, Force, African, Philosophy

description: What the constitutes the bulk of African philosophical discussions is identified by the late Kenyan philosopher, Henry Odera Oruka, as being the six schools of thought on what African philosophy is or could be, namely, ethno-philosophy, philosophic sagacity, nationalistic-ideological philosophy, professional philosophy, hermeneutic philosophy, and artistic or literary philosophy. The first four are the generally well known and well explained schools of African philosophy.  However, while ethno- philosophy and philosophic sagacity may not be totally qualify for philosophy in its real sense, they however, provide the data for serious philosophical reflection, like Placid Tempels Bantu Philosophy of force, where he presented the idea of African force vitale as the engine house of African philosophy where force is everything and everything is force. Force seen in this context equals the Western idea of Being, where everything that exist is being, and being is everything. The extra ordinary research on the concept of force was part of the process of decolonisation of knowledge highly dominated by the Western thought pattern. The intention is towards the rediscoverring of the ancestral philosophical worldview and spiritual values that had been denigrated and distorted by colonial education. Africans need to rediscover their values, which can only be done through mental re orientation that will orchestrate new conceptual framework. A hermeneutic approach is therefore necessary to interpret the use of African languages that will hitherto elucidate African worldview making it more meaningful.
A new proof that alternating links are non-trivial
Creators: name: Moffatt, Iain
Publisher: name: arXiv
Year: 2006
Subjects: subject: Geometric Topology (math.GT)
subject: FOS: Mathematics

description: We use a simple geometric argument and small cancellation properties of link groups to prove that alternating links are non-trivial. This proof uses only classic results in topology and combinatorial group theory.
description: Minor changes. To appear in Fundamenta Mathematicae
MARKETING STRATEGIES FOR ORGANIC WINE GROWERS IN THE VENETO REGION
Creators: name: Rossetto, Luca
name: Rossetto, Luca
Publisher: name: Unknown
Year: 2002
Subjects: subject: Marketing
subject: FOS: Economics and business
subject: wine growers
subject: organic standards
subject: market
subject: certification
subject: product variety
subject: winemaking process
subject: quality
subject: marketing strategy

description: The Italian organic wine sector has dramatically increased, recently. In the last two years, the organic vineyard area has doubled reaching more than 50.000 hectares, while organic wineries account are more than 9.000 farms. In particular, the Veneto Region accounts for 4% of total area and for 15% of organic wine makers. This study analyzes the organic wine sector in the Veneto Region mainly focusing on marketing issues. Two organic wine enterprises are recognized: 1) small wine growers and 2) large-size wineries. The former are specialized in producing organic grapes while the latter are highly specialized in both cultivating grapes and processing wine employing sophisticated technology, especially in making wine. Almost total production is certified and it includes a great variety of red, white and old growing wines; most of the product is sold in foreign market, especially in Germany, USA, Japan while domestic market is limited. So far, specialized organic stores and restaurants have been traditional retailing for organic wine. Now, the increasing size of production is sold especially through supermarket chains. Two main marketing strategies have been detected among small wine growers and wineries. The latter are mainly focused on price and product variety while small wine growers, selling wine to traditional retailing, prefer a wine quality strategy. Big size wineries selling to foreign or domestic supermarket chains or to final consumers have high market power inside wine supply-chain. These producers usually set the price through a mark-up on production cost. Uncertainty coming from both high yield variability and market volatility is faced by increasing wine quality and marketing strategies reinforced by their own brand name. Traditional tools, such as wine exhibitions, and new ones, such as e-commerce, drive organic wine promotion. An information campaign on organic food products should be also encouraged to alleviate informational asymmetries. Although a great share of the increasing production of organic wine is well appreciated on foreign market, insufficient marketing activities may slow or impede the future growth. The ambiguous definition of organic wine plays also a critical role hindering further overseas market growth, as well. Actually, Italy is a leading organic wine producer in the world, also its product features is perceived as high quality standard. However, lack of well design marketing plan could be a weakness for Italian wine-makers and exporters, as more and more competitors, such as the US, Canada, Australia with well planned marketing strategy, may affect Italian overseas market.
title: The Stateness Index (StIx) – Conceptual Design and Empirical Results
Creators: name: Stawski, Theresa Paola
name: Lauth, Hans-Joachim
Publisher: name: Universität Würzburg
Year: 2024
Subjects: subject: 321 Staatsformen und Regierungssysteme

description: Würzburger Arbeitspapiere zur Politikwissenschaft und Soziologie (WAPS); 15
A safety net for fast migrators: Interactions between gap-opening and sub-gap-opening bodies in a protoplanetary disk
Creators: name: Thommes, Edward W.
Publisher: name: arXiv
Year: 2005
Subjects: subject: Astrophysics (astro-ph)
subject: FOS: Physical sciences

description: Young planets interact with their parent gas disks through tidal torques. An imbalance between inner and outer torques causes bodies of mass $\ga 0.1$ Earth masses to lose angular momentum and migrate inward rapidly relative to the disk; this is known as ``Type I'' migration. However, protoplanets that grow to gas giant mass, O($10^2) M_\oplus$, open a gap in the disk and are subsequently constrained to migrate more slowly, locked into the disk's viscous evolution in what is called "Type II" migration. In a young planetary system, both Type I and Type II bodies likely coexist; if so, differential migration ought to result in close encounters when the former originate on orbits exterior to the latter. We investigate the resulting dynamics, using two different numerical approaches: an N-body code with dissipative forces added to simulate the effect of the gas disk, and a hybrid code which combines an N-body component with a 1-dimensional viscous disk model, treating planet-disk interactions in a more self-consistent manner. In both cases, we find that sub-gap-opening bodies have a high likelihood of being resonantly captured when they encounter a gap-opening body. A giant planet thus tends to act as a barrier in a protoplanetary disk, collecting smaller protoplanets outside of its orbit. Such behavior has two important implications for giant planet formation: First, for captured protoplanets it mitigates the problem of the migration timescale becoming shorter than the growth timescale. Secondly, it suggests one path to forming systems with multiple giant planets: Once the first has formed, it traps/accretes the future solid core of the second in an exterior mean-motion resonance, and so on. The most critical step in giant planet formation may thus be the formation of the very first one.
description: Accepted for publication in ApJ
SLOW MAGIC: AGRICULTURAL R&D A CENTURY AFTER MENDEL
Creators: name: Pardey, Philip G.
name: Beintema, Nienke M.
name: Pardey, Philip G.
name: Beintema, Nienke M.
Publisher: name: Unknown
Year: 2002
Subjects: Research and Development/Tech Change/Emerging Technologies

description: Reproduced with permission from the International Food Policy Research Institute www.ifpri.org. Originally published as: Pardey, Philip; Beintema, Nienke M. 2001. Slow magic: agricultural R&D a century after Mendel. (Food Policy Report) Washington, D.C.: International Food Policy Research Institute (IFPRI).
Detectable environmental effects in GW190521-like black-hole binaries with LISA
Creators: name: Toubiana, Alexandre
name: Sberna, Laura
name: Caputo, Andrea
name: Cusin, Giulia
name: Marsat, Sylvain
name: Jani, Karan
name: Babak, Stanislav
name: Barausse, Enrico
name: Caprini, Chiara
name: Pani, Paolo
name: Sesana, Alberto
name: Tamanini, Nicola
Publisher: name: arXiv
Year: 2020
Subjects: subject: High Energy Astrophysical Phenomena (astro-ph.HE)
subject: General Relativity and Quantum Cosmology (gr-qc)
subject: FOS: Physical sciences

description: GW190521 is the compact binary with the largest masses observed to date, with at least one in the pair-instability gap. This event has also been claimed to be associated with an optical flare observed by the Zwicky Transient Facility in an Active Galactic Nucleus (AGN), possibly due to the post-merger motion of the merger remnant in the AGN gaseous disk. We show that the Laser Interferometer Space Antenna (LISA) will detect up to ten of such gas-rich black hole binaries months to years before their detection by LIGO/Virgo-like interferometers, localizing them in the sky within $\approx1$ deg$^2$. LISA will also measure directly deviations from purely vacuum and stationary waveforms, arising from gas accretion, dynamical friction, and orbital motion around the AGN's massive black hole (acceleration, strong lensing, and Doppler modulation). LISA will therefore be crucial to alert and point electromagnetic telescopes ahead of time on this novel class of gas-rich sources, to gain direct insight on their physics, and to disentangle environmental effects from corrections to General Relativity that may also appear in the waveforms at low frequencies.
description: 6 pages, 4 figures. Matches published version
AGRICULTURAL BIOTECHNOLOGY AND THE PRIVATIZATION OF GENETIC INFORMATION: IMPLICATIONS FOR INNOVATION AND EQUITY
Creators: name: Jackson, Lee Ann
name: Jackson, Lee Ann
Publisher: name: Unknown
Year: 2000
Subjects: Research and Development/Tech Change/Emerging Technologies

description: Changes in intellectual property rights systems have lead to the privatization of genetic resources and subsequently to the proliferation of new agricultural biotechnology products. Since these innovations have the potential to increase agricultural production while limiting environmental degradation, the benefits from these technologies could be far-reaching. However, while intellectual property rights are intended to encourage innovation in the private sector, private sector domination of the development of new products may skew the distribution of benefits away from marginally productive agricultural areas where poorer communities live. The primary purpose of this paper is to explore the tension between the public goals of encouraging innovative use of genetic resources and supporting the equitable access to genetic resources. The paper also discusses overlapping systems of intellectual property rights on genetic resources, and how this complex system of rights for genetic resources influences the relationship of users and producers of genetic knowledge. The paper will include a discussion of private and public good aspects of genetic resources and how various intellectual property systems affect genetic resource use. The paper will also examine the challenge of creating public policies and legal systems that encourage innovation and ensure the equitable distribution of benefits from genetic resources.
The signature of a wind reverse shock in Gamma-ray bursts afterglows
Creators: name: Pe'er, Asaf
name: Wijers, Ralph A. M. J.
Publisher: name: arXiv
Year: 2005
Subjects: subject: Astrophysics (astro-ph)
subject: FOS: Physical sciences

description: Explosions of massive stars are believed to be the source of a significant fraction of gamma-ray bursts (GRBs). If this is indeed the case, then the explosion blast wave propagates into a complex density structure, composed of a stellar wind bounded by two shock waves - a wind reverse shock and a forward shock. As the explosion blast wave reaches R_0, the radius of the wind reverse shock, it splits into two shock waves - a reverse and a forward shock wave. We show that the reverse shock thus produced is not strong, therefore full analytical treatment is required in calculating its properties. We calculate the dynamics of the flow and the evolution of the blast waves in all of the different stages. We show that the fluid Lorentz factor at r>R_0 is equal to 0.725 times the blast wave Lorentz factor as it reaches R_0, and is time (and r) independent as long as the blast wave reverse shock exists. Following the calculation of the blast wave evolution, we calculate the radiation expected in different energy bands. We show that about a day after the main explosion, as the blast wave reaches R_0, the observed afterglow flux starts to rise. It rises by a factor of about 2 in a few hours, during which the blast wave reverse shock exists, and then declines. We show that the power law index describing light curve time evolution is different at early (before the rise) and late times, and is frequency dependent. We present light curves in the different energy bands for this scenario.
description: 11 pages, 5 figures; submitted to Ap.J
Метод освоенных сроков
Creators: name: Понизовкин, Денис Михайлович
Publisher: name: Zenodo
Year: 2021
Subjects: метод освоенных сроков
проектное управление
метод освоенных объемов

description: В данной работе описано, как применить метод освоенных сроков для оценки выполнения проекта или контракта и для прогнозирования времени выполнения всего контракта и отклонения от запланированного графика на следующий отчетный период после текущего.
A polygenic risk score to predict future adult short stature amongst children
Creators: name: Lu, Tianyuan
name: Forgetta, Vincenzo
name: Wu, Haoyu
name: Perry, John R.B.
name: Ong, Ken K.
name: Greenwood, Celia
name: Timpson, Nicholas
name: Manousaki, Despoina
name: Richards, Brent
Publisher: name: figshare
Year: 2022
Subjects: subject: 60412 Quantitative Genetics (incl. Disease and Trait Mapping Genetics)
subject: FOS: Biological sciences
subject: Medicine

description: Supplementary Notes, Tables and Figures for journal article. Full article published in The Journal of Clinical Endocrinology & Metabolism https://doi.org/10.1210/clinem/dgab215. The polygenic risk score is available on the PGS Catalog https://www.pgscatalog.org/score/PGS000758/.
Important note (Aug 2021): SNPs included in this polygenic risk score may be imputed. For imputed SNPs, probability-based dosages (continuous values ranging from 0 to 2) should be used to calculate the score rather than hard-coded dosages (0/1/2). Extra caution must be taken if using programs by default rounding dosages to integers such as plink(2).
Important note (Mar 2022): We spotted a mistake in the previously submitted version of the score file, as some of the predictor SNPs had effect / alternative alleles mistakenly flipped. We have included a corrected version in this repository and are contacting the PGS Catalog to correct deposited file as well. TL sincerely apologizes for this mistake.
Nearby early-type galaxies with ionized gas.II. Line-strength indices for 18 additional galaxies
Creators: name: Annibali, F.
name: Bressan, A.
name: Rampazzo, R.
name: Zeilinger, W. W.
Publisher: name: arXiv
Year: 2005
Subjects: subject: Astrophysics (astro-ph)
subject: FOS: Physical sciences

description: Rampazzo et al. 2005 (Paper I) presented a data-set of line-strength indices for 50 early-type galaxies in the nearby Universe. The galaxy sample is biased toward galaxies showing emission lines, located in environments corresponding to a broad range of local galaxy densities, although predominantly in low density environments. The present addendum to Paper I enlarges the above data-set of line-strength indices by analyzing 18 additional early-type galaxies (three galaxies, namely NGC 3607, NGC 5077 and NGC 5898 have been already presented in the previous set). As in Paper I, we measured 25 line-strength indices, defined by the Lick IDS "standard" system (Trager et al. 1998; Worthey & Ottaviani 1997), for 7 luminosity weighted apertures and 4 gradients of each galaxy. This paper presents the line-strength data-set and compares it with the available data in the literature.
description: 18 pages, A&A in press
THE BEGINNING OF ORGANIC FISH FARMING IN ITALY
Creators: name: Defrancesco, Edi
name: Defrancesco, Edi
Publisher: name: Unknown
Year: 2002
Subjects: subject: Farm Management
subject: Organic fish farming
subject: product differentiation
subject: organic fish demand.

description: Italian demand for organic products is rapidly increasing, yet there is currently no supply of certified organic marine-fish. Moreover, over recent years marine fish farm profitability has been reduced because of competition from imported products. A pilot project was carried out in order to: a) define standards for organic marine fish farming; b) evaluate production costs in four farms, experimenting semi-extensive organic fish farming under proposed standards (seabream, Sparus aurata and seabass, Dicentrarchus labrax); c) estimate the potential demand for certified organic marine fish and consumer willingness to pay in order to figure out the profitability of a product differentiation strategy. This paper shows the economic results for production costs at the farm level and potential demand. The latter has been estimated using survey-data of 6,877 consumers by means of a questionnaire-interview carried out during an experimental organic marine fish promotion sale. Results show that organic marine fish farming could be a good market opportunity for some Italian fish farmers by improving consumer information on organic products, adopting a supply concentration strategy at the farm level and carefully managing semi-extensive-farming set up by proposed regulations.
The study of adult education at UBC, 1957-1985
Creators: name: Damer, Eric John
Publisher: name: University of British Columbia
Year: 2009

description: In 1957, The University of British Columbia launched Canada's first degree-granting program in adult education. It subsequently grew to be one of the largest departments in the Faculty of Education, and recognized internationally for its work. As it grew, however, the program lost its initial administrative privilege. This study asks why UBC had the honour of this Canadian "first," and how the program flowed and ebbed. It shows the relations between the department's administrative and intellectual activities, and how the program fit British Columbia's social development more generally. The study concludes that the successes were largely opportunistic, as the program profited from the changing face of higher education more generally and privileges secured under an early administrative regime. The program's failure was that it did not create a stable identity independent of these opportunities: it failed to gain recognition from academic outsiders as the home of distinct adult education research and knowledge, and it failed to become the gatekeeper of a controlled profession.
Significantly enhanced critical current densities in MgB2 tapes made by a scaleable, nano-carbon addition route
Creators: name: Ma, Yanwei
name: Zhang, Xianping
name: Nishijima, G.
name: Watanabe, K.
name: Bai, Xuedong
Publisher: name: arXiv
Year: 2006
Subjects: subject: Superconductivity (cond-mat.supr-con)
subject: FOS: Physical sciences

description: Nanocarbon-doped Fe-sheathed MgB2 tapes with different doping levels were prepared by the in situ powder-in-tube method. Compared to the undoped tapes, Jc for all the C-doped samples was enhanced by more than an order of magnitude in magnetic fields above 9 T. At 4.2 K, the transport Jc for the 5 at% doped tapes reached 1.85x104 A/cm2 at 10 T and 2.8x103 A/cm2 at 14 T, respectively. Moreover, the critical temperature for the doped tapes decreased slightly. Transmission electron microscopy showed a number of intra-granular dislocations and the dispersed nanoparticles embedded within MgB2 grains induced by the C doping. The mechanism for the enhancement of flux pinning is also discussed. These results indicate that powder-in-tube-processed MgB2 tape is very promising for high-field applications.
description: 13 pages, 5 figures. to be published soon
nanoTesla magnetometry with the silicon vacancy in silicon carbide
Creators: name: Abraham, John B. S.
name: Gutgsell, Cameron
name: Todorovski, Dalibor
name: Sperling, Scott
name: Epstein, Jacob E.
name: Tien-Street, Brian S.
name: Sweeney, Timothy M.
name: Wathen, Jeremiah J.
name: Pogue, Elizabeth A.
name: Brereton, Peter G.
name: McQueen, Tyrel M.
name: Frey, Wesley
name: Clader, B. D.
name: Osiander, Robert
Publisher: name: arXiv
Year: 2020
Subjects: subject: Quantum Physics (quant-ph)
subject: FOS: Physical sciences

description: Silicon Carbide is a promising host material for spin defect based quantum sensors owing to its commercial availability and established techniques for electrical and optical microfabricated device integration. The negatively charged silicon vacancy is one of the leading spin defects studied in silicon carbide owing to its near telecom photoemission, high spin number, and nearly temperature independent ground state zero field splitting. We report the realization of nanoTesla shot-noise limited ensemble magnetometry based on optically detected magnetic resonance with the silicon vacancy in 4H silicon carbide. By coarsely optimizing the anneal parameters and minimizing power broadening, we achieved a sensitivity of 3.5 nT/$\sqrt{Hz}$. This was accomplished without utilizing complex photonic engineering, control protocols, or applying excitation powers greater than a Watt. This work demonstrates that the silicon vacancy in silicon carbide provides a low-cost and simple approach to quantum sensing of magnetic fields.
LANDOWNER DECISION MAKING ABOUT RIPARIAN BUFFERS
Creators: name: Lynch, Lori
name: Brown, Cheryl
name: Lynch, Lori
name: Brown, Cheryl
Publisher: name: Unknown
Year: 2000
Subjects: subject: Land Economics/Use
subject: agricultural land-use
subject: Conservation Reserve Enhancement Program
subject: environmental policy
subject: land-use
subject: riparian buffers

description: A two-stage model is used to examine a landowner's decision to use riparian buffers. First, the farmer chooses whether to continue farming or to sell the land for development. If the farmer continues farming, then he or she must decide whether or not to plant a buffer. If the farmer plants a buffer, he or she must choose its type: trees or grass. Simulations of a representative farmer determine the parameters and parameter values that affect each decision. The farmer chooses to plant a buffer unless the net crop price is high or the land rental rate is low. The choice of buffer type is affected by crop price, farm size, relative incentive payments, relative cost share rates, and amount of deer damage.
Regular patterns in the acoustic spectrum of rapidly rotating stars
Creators: name: Reese, D.
name: Lignières, F.
name: Rieutord, M.
Publisher: name: arXiv
Year: 2008
Subjects: subject: Astrophysics (astro-ph)
subject: FOS: Physical sciences

description: Context: Rapid rotation modifies the structure of the frequency spectrum of pulsating stars, thus making mode identification difficult. Aims: We look for new forms of organisation for the frequency spectrum that can provide a basis for mode identification at high rotation rates. Methods: Acoustic modes in uniformly rotating polytropic models of stars are computed using a numerical code that fully takes the effects of rotation (centrifugal distortion and Coriolis acceleration) into account. All low-degree modes, l=0 to 3, with radial orders n=1-10 and 21-25 for N=3 polytropic models and n=1-10 for N=1.5 polytropic models are followed from a zero rotation rate up to 59 % of the break-up velocity. Results: We find an empirical formula that gives a good description of the high-frequency range of the computed acoustic spectrum for high rotation rates. Differences between this formula and complete eigenmode calculations are shown to be substantially smaller than those obtained with a third order perturbative method valid at low rotation rates.
description: 4 pages, 3 figures, 2 tables, accepted for publication in A&A
PANEL STRATIFICATION IN META-ANALYSIS OF ECONOMIC STUDIES: AN INVESTIGATION OF ITS EFFECTS IN THE RECREATION VALUATION LITERATURE
Creators: name: Rosenberger, Randall S.
name: Loomis, John B.
name: Rosenberger, Randall S.
name: Loomis, John B.
Publisher: name: Unknown
Year: 2000
Subjects: subject: Resource /Energy Economics and Policy
subject: meta-analysis
subject: outdoor recreation economic benefits
subject: panel data
subject: stratification

description: Statistical summarizations of literature review databases using meta-regression analysis provide insight into the differences in past estimates of economic variables such as benefits and price elasticities. The panel nature of the data is an issue that has not received adequate attention in past meta-analyses. This paper conceptually and empirically explores the complexity of stratifying data into panels that model the potential correlation and heterogeneity of past outdoor recreation benefit research. Although our tests of three stratifications of the data did not discern panel effects, the inherent complexity of the data maintains a strong presumption of heterogeneous strata.
Astrophysical constraints on non-standard coherent neutrino-nucleus scattering
Creators: name: Suliga, Anna M.
name: Tamborra, Irene
Publisher: name: arXiv
Year: 2020
Subjects: subject: High Energy Physics - Phenomenology (hep-ph)
subject: High Energy Astrophysical Phenomena (astro-ph.HE)
subject: FOS: Physical sciences

description: The exciting possibility of detecting supernova, solar, and atmospheric neutrinos with coherent neutrino-nucleus scattering detectors is within reach, opening up new avenues to probe New Physics. We explore the possibility of constraining non-standard coherent neutrino-nucleus scattering through astrophysical neutrinos. Sensitivity bounds on the mass and coupling of the new mediator are obtained by inspecting the modifications induced by the new interaction on the recoil rate observable in the upcoming RES-NOVA and DARWIN facilities. Under the assumption of optimal background tagging, the detection of neutrinos from a galactic supernova burst, or one-year exposure to solar and atmospheric neutrinos, will place the most stringent bounds for mediator couplings $g \gtrsim 10^{-5}$ and mediator masses between 1 and 100 MeV. A similar, but slightly improved, potential to COHERENT will be provided for larger mediator masses. In particular, RES-NOVA and DARWIN may potentially provide one order of magnitude tighter constraints than XENON1T on the mediator coupling. Non-standard coherent neutrino-nucleus scattering may also force neutrinos to be trapped in the supernova core; this argument allows to probe the region of the parameter space with $g \gtrsim 10^{-4}$, which is currently excluded by other coherent neutrino-nucleus scattering facilities or other astrophysical and terrestrial constraints.
description: 20 pages, 12 figures. Discussion on the forecasted bounds extended, conclusions unchanged. Matches version accepted in Phys. Rev. D
Performance Analysis of MIMO-MRC in Double-Correlated Rayleigh Environments
Creators: name: McKay, Matthew R.
name: Grant, Alex J.
name: Collings, Iain B.
Publisher: name: arXiv
Year: 2005
Subjects: subject: Information Theory (cs.IT)
subject: FOS: Computer and information sciences

description: We consider multiple-input multiple-output (MIMO) transmit beamforming systems with maximum ratio combining (MRC) receivers. The operating environment is Rayleigh-fading with both transmit and receive spatial correlation. We present exact expressions for the probability density function (p.d.f.) of the output signal-to-noise ratio (SNR), as well as the system outage probability. The results are based on explicit closed-form expressions which we derive for the p.d.f. and c.d.f. of the maximum eigenvalue of double-correlated complex Wishart matrices. For systems with two antennas at either the transmitter or the receiver, we also derive exact closed-form expressions for the symbol error rate (SER). The new expressions are used to prove that MIMO-MRC achieves the maximum available spatial diversity order, and to demonstrate the effect of spatial correlation. The analysis is validated through comparison with Monte-Carlo simulations.
description: 25 pages. Submitted to the IEEE Transactions on Communications
Pleurorthoceras Flower 1962
Creators: name: Kröger, Björn
Publisher: name: Zenodo
Year: 2025
Subjects: Biodiversity
Taxonomy
Animalia
Mollusca
Cephalopoda
Orthocerida
Orthoceratidae
Pleurorthoceras

description: Genus Pleurorthoceras Flower, 1962
Type species
Orthoceras clarksvillense Foerste, 1924 from Clarksville, Ohio, USA, Waynesville Formation, latest Katian; by original designation.
Diagnosis
Slender, gradually expanding, smooth orthocones; circular in cross section with straight, transverse sutures; chamber distance between one-third to one half of the corresponding conch diameter (RCL = 0.3–0.5); siphuncle subcentral to central; siphuncular segments subtubular, slightly expanded within chambers; septal necks short, suborthochoanitic; endosiphuncular deposits unknown; mural cameral deposits well developed. (Adopted from Flower 1962.)
description: Published as part of Kröger, Björn, 2025, The Lyckholm acme of cephalopods - Review of the late Katian (Vormsi-Pirgu regional stages) Ordovician cephalopods of Estonia, pp. 1-169 in European Journal of Taxonomy 978 on page 23, DOI: 10.5852/ejt.2025.978.2801, http://zenodo.org/record/14988376
Elasticity of a DNA chain dotted with bubbles under force
Creators: name: Majumdar, Debjyoti
Publisher: name: arXiv
Year: 2020
Subjects: subject: Soft Condensed Matter (cond-mat.soft)
subject: Statistical Mechanics (cond-mat.stat-mech)
subject: FOS: Physical sciences

description: The flexibility and the extension along the direction of the force are shown to be related to the bubble number fluctuation and the average number of bubbles respectively, when the strands of the DNA are subjected to a force along the same direction, here we call a stretching force. The force-temperature phase diagram shows the existence of a tricritical point (TCP), where the first-order force induced zipping transition becomes continuous. On the other hand, when the forces are being applied in opposite directions, here we call an unzipping force, the transition remains first-order,with the possibility of vanishing of the low-temperature re-entrant phase for a semiflexible DNA. Moreover, we found that the bulk elasticity changes only if an external force penetrates the bound phase and affect the bubble states
description: 13 pages, 12 figures
THE DYNAMICS OF FEEDER CATTLE MARKET RESPONSES TO CORN PRICE CHANGE
Creators: name: Anderson, John D.
name: Trapp, James N.
name: Anderson, John D.
name: Trapp, James N.
Publisher: name: Unknown
Year: 2000
Subjects: subject: Demand and Price Analysis
subject: corn
subject: corn price multiplier
subject: dynamic simulation
subject: feeder cattle

description: A feeder-calf price model is estimated which incorporates elements of break-even budget analysis, including estimates of placement weights, slaughter weights, ration cost, and feed-conversion rates. From this model, a corn price multiplier is calculated which quantifies the corn/feeder-calf price relationship. Because the multiplier includes information on cattle weight, feed conversion, and ration cost, it also provides insight into how feeding programs are altered in response to corn price changes. Changes in feeding programs which occur in response to corn price changes are illustrated with dynamic simulation based on weight, ration cost, and price models presented here.
title: Η εξέλιξη των συστημάτων είσπραξης των δημοσίων εσόδων. Ο μηχανισμός είσπραξης σε τέσσερις χώρες του ευρωπαϊκού νότου και η περίπτωση της ελληνικής Α.Α.Δ.Ε.
title: The evolution of the public revenue collection systems. The collection mechanism in four countries of the european south and the case of the Hellenic Independent Public Revenue Authority
titleType: AlternativeTitle
Creators: name: Δερλερές, Κωνσταντίνος
Publisher: name: Πανεπιστήμιο Δυτικής Αττικής
Year: 2021
Subjects: Ελληνικό φορολογικό σύστημα
Ανεξάρτητη Αρχή Δημοσίων Εσόδων
Φορολογική διοίκηση
Ευρωπαϊκός νότος
Υπηρεσίες είσπραξης
Δημόσια έσοδα

description: Οι Υπηρεσίες είσπραξης Δημοσίων εσόδων διαδραματίζουν σημαντικό θεσμικό ρόλο στη συλλογή των πόρων που απαιτούνται για τη χρηματοδότηση Δημόσιων δράσεων και λειτουργιών, ενώ παράλληλα εξελίσσονται, καθώς καταβάλλονται συνεχείς προσπάθειες σε παγκόσμιο επίπεδο προς τη δημιουργία δίκαιων και αμερόληπτων φορολογικών Υπηρεσιών. Ο μεγάλος αριθμός προσωπικού και φορολογούμενων με τους οποίους αλληλοεπιδρούν αυτές οι Διοικήσεις, το σύνθετο δίκτυο ενδιαφερομένων (stakeholders) και άλλων Δημόσιων φορέων με τους οποίους συνδέονται, το εύρος και η φύση των φορολογικών νόμων που επιβάλλουν, το πλήθος των βασικών λειτουργιών τους, συμπεριλαμβανομένων των πληροφοριακών συστημάτων, απαιτούν την κατοχύρωση των εν λόγω Οργανισμών εσόδων με επαρκείς εξουσίες, προκειμένου να εκτελούν τις ζωτικές τους λειτουργίες αποτελεσματικά και με επάρκεια. Στην παρούσα διπλωματική εργασία, επιχειρείται η περιγραφή της ιστορικής εξέλιξης των συστημάτων είσπραξης Δημοσίων εσόδων σε παγκόσμιο επίπεδο και της επιρροής που είχε η εξέλιξη αυτή στη διαμόρφωση του φορολογικού μηχανισμού στην Ελλάδα. Επίσης, παρατίθενται οι πρόσφατες μεταβολές στον Οργανισμό είσπραξης της Ελλάδος, καθώς και στους αντίστοιχους Οργανισμούς τεσσάρων χωρών του Ευρωπαϊκού Νότου και διερευνάται ο βαθμός επιτυχίας της υφιστάμενης φορολογικής δομής στη Χώρα (Ανεξάρτητη Αρχή Δημοσίων εσόδων), κυρίως όσον αφορά την επίτευξη των στόχων που η ίδια η Αρχή είχε θέσει κατά την ίδρυσή της, αλλά και την παροχή ποιοτικών υπηρεσιών προς τους πολίτες.
CONSOLIDATING RURAL SCHOOL DISTRICTS: POTENTIAL SAVINGS AND EFFECTS ON STUDENT ACHIEVEMENT
Creators: name: Jacques, Charles
name: Brorsen, B. Wade
name: Richter, Francisca G.-C.
name: Jacques, Charles
name: Brorsen, B. Wade
name: Richter, Francisca G.-C.
Publisher: name: Unknown
Year: 2000
Subjects: subject: Public Economics
subject: economies of size
subject: education
subject: plateau function
subject: school district consolidation

description: One frequently proposed policy is to consolidate rural school districts in order to save money by obtaining economies of size. The effects of school district size on both expenditures and standardized test scores are estimated for Oklahoma. Results indicate that economies of scale with respect to expenditures per student exist up to an average daily membership (ADM) of 965 students, but that as school districts become larger, tests scores decline. Even if savings in school district administration from consolidation are spent on instruction, state average tests scores would decrease slightly. Thus, school district consolidation can reduce costs, but it will also reduce student learning.
Cavity-mediated long-range interaction for fast multiqubit quantum logic operations
Creators: name: Kapale, Kishore T.
name: Agarwal, Girish S.
name: Scully, Marlan O.
Publisher: name: arXiv
Year: 2005
Subjects: subject: Quantum Physics (quant-ph)
subject: FOS: Physical sciences

description: Interactions among qubits are essential for performing two-qubit quantum logic operations. However, nature gives us only nearest neighbor interactions in simple and controllable settings. Here we propose a strategy to induce interactions among two atomic entities that are not necessarily neighbors of each other through their common coupling with a cavity field. This facilitates fast multiqubit quantum logic operations through a set of two-qubit operations. The ideas presented here are applicable to various quantum computing proposals for atom based qubits such as, trapped ions, atoms trapped in optical cavities and optical lattices.
description: 10 pages, 3 figures
ChoiRbot: A ROS 2 Toolbox for Cooperative Robotics
Creators: name: Testa, Andrea
name: Camisa, Andrea
name: Notarstefano, Giuseppe
Publisher: name: arXiv
Year: 2020
Subjects: subject: Robotics (cs.RO)
subject: FOS: Computer and information sciences

description: In this paper, we introduce ChoiRbot, a toolbox for distributed cooperative robotics based on the novel Robot Operating System (ROS) 2. ChoiRbot provides a fully-functional toolset to execute complex distributed multi-robot tasks, either in simulation or experimentally, with a particular focus on networks of heterogeneous robots without a central coordinator. Thanks to its modular structure, ChoiRbot allows for a highly straight implementation of optimization-based distributed control schemes, such as distributed optimal control, model predictive control, task assignment, in which local computation and communication with neighboring robots are alternated. To this end, the toolbox provides functionalities for the solution of distributed optimization problems. The package can be also used to implement distributed feedback laws that do not need optimization features but do require the exchange of information among robots. The potential of the toolbox is illustrated with simulations and experiments on distributed robotics scenarios with mobile ground robots. The ChoiRbot toolbox is available at https://github.com/OPT4SMART/choirbot.
Test of modified BCS model at finite temperature
Creators: name: Ponomarev, V. Yu.
name: Vdovin, A. I.
Publisher: name: arXiv
Year: 2005
Subjects: subject: Nuclear Theory (nucl-th)
subject: FOS: Physical sciences

description: A recently suggested modified BCS (MBCS) model has been studied at finite temperature. We show that this approach does not allow the existence of the normal (non-superfluid) phase at any finite temperature. Other MBCS predictions such as a negative pairing gap, pairing induced by heating in closed-shell nuclei, and ``superfluid -- super-superfluid'' phase transition are discussed also. The MBCS model is tested by comparing with exact solutions for the picket fence model. Here, severe violation of the internal symmetry of the problem is detected. The MBCS equations are found to be inconsistent. The limit of the MBCS applicability has been determined to be far below the ``superfluid -- normal'' phase transition of the conventional FT-BCS, where the model performs worse than the FT-BCS.
description: 8 pages, 9 figures, to appear in PRC