cometadata/datacite-rtg-text-other-reclassification-records huggingface dataset:
Discovery of a Giant Stellar Tidal Stream Around the Disk Galaxy NGC 4013
Creators: name: Martinez-Delgado, David
name: Pohlen, Michael
name: Gabany, R. Jay
name: Majewski, Steven R.
name: Penarrubia, Jorge
name: Palma, Chris
Publisher: name: arXiv
Year: 2008
Subjects: subject: Astrophysics (astro-ph)
subject: FOS: Physical sciences

description: We report the discovery of a giant, loop-like stellar structure around the edge-on spiral galaxy NGC 4013. This arcing feature extends 6 arcmin (~26 kpc in projected distance) northeast from the center and 3 arcmin (~=12 kpc) from the disk plane; likely related features are also apparent on the southwest side of the disk, extending to 4 arcmin (~17 kpc). The detection of this low surface-brightness muR= 27.0+0.3-0.2 mag/sqarcsec) structure is independently confirmed in three separate datasets from three different telescopes. Although its true three dimensional geometry is unknown, the sky- projected morphology of this structure displays a match with the theoretical predictions for the edge-on, projected view of a stellar tidal streams of a dwarf satellite moving in a low inclined (~25deg), nearly circular orbit. Using the recent model of the Monoceros tidal stream in the Milky Way by Penarrubia et al. as template, we find that the progenitor system may have been a galaxy with an initial mass 6*10^8 Msun, of which current position and final fate is unknown. According to this simulation, the tidal stream may be approximately ~2.8 Gyr of age. Our results demonstrate that NGC 4013, previously considered a prototypical isolated disk galaxy in spite of having one of the most prominent HI warps detected thus far, may have in fact suffered a recent minor merger. This discovery highlights that undisturbed disks at high surface brightness levels in the optical but warped in HI maps may in fact reveal complex signatures of recent accretion events in deep photometric surveys.
description: Comments: LaTeX, ApJ preprint style, 21 pages, 6 figures (reduced quality), ApJ accepted. A high resolution version of the paper in addition to a full version of the colour image of NGC 4013 can be found at http://www.cosmotography.com/images/iac/ngc4013.html . Replaced to match accepted version after revisions following referee's report
Direct, Non-Destructive Imaging of Magnetization in a Spin-1 Bose Gas
Creators: name: Higbie, J. M.
name: Sadler, L. E.
name: Inouye, S.
name: Chikkatur, A. P.
name: Leslie, S. R.
name: Moore, K. L.
name: Savalli, V.
name: Stamper-Kurn, D. M.
Publisher: name: arXiv
Year: 2005
Subjects: subject: Other Condensed Matter (cond-mat.other)
subject: FOS: Physical sciences

description: Polarization-dependent phase-contrast imaging is used to spatially resolve the magnetization of an optically trapped ultracold gas. This probe is applied to Larmor precession of degenerate and nondegenerate spin-1 $^{87}$Rb gases. Transverse magnetization of the Bose-Einstein condensate persists for the condensate lifetime, with a spatial response to magnetic field inhomogeneities consistent with a mean-field model of interactions. Rotational symmetry implies that the Larmor frequency of a spinor condensate be density-independent, and thus suitable for precise magnetometry with high spatial resolution. In comparison, the magnetization of the noncondensed gas decoheres rapidly.
description: 4 pages, 4 figures
การสอนภาษาไทยในฐานะภาษาต่างประเทศ: จากปัจจัยพื้นฐานสู่กลวิธีสอน
Creators: name: นวลทิพย์ เพิ่มเกษร
Publisher: name: คณะศิลปศาสตร์ มหาวิทยาลัยธรรมศาสตร์
Year: 2011
Subjects: -

description: วรรณวิทัศน์, 11, พฤศจิกายน, 136-149
วิทยานิพนธ์ของนักศึกษาระดับบัณฑิตศึกษา สาขาวิชาภาษาไทย คณะศิลปศาสตร์ มหาวิทยาลัยธรรมศาสตร์ ปีการศึกษา 2545-2553
Creators: name: อรพัช บวรรักษา
Publisher: name: คณะศิลปศาสตร์ มหาวิทยาลัยธรรมศาสตร์
Year: 2011
Subjects: -

description: วรรณวิทัศน์, 11, พฤศจิกายน, 150-191
Prehistoric settlement and production in the Nam River Valley, South Korea
Creators: name: Bale, Martin T.
Publisher: name: University of British Columbia
Year: 2009

description: This study uses settlement, mortuary and house structure data from southeast Korea to examine the nature of society, production, economic centralization, and change in the Nam River area during the period 850 to 450 B.C. Actions of emerging leaders are thought to be a main factor behind the emergence of hierarchical settlement systems and economic centralization. To test whether there was group-based society and centrally located production in the study area, house floors, spatial distribution of settlements, stone tool and prestige object production, burials, and prestige objects are examined to uncover trends in the settlement system through time. Ditch-enclosures are expected to protect production and elite houses in the central part of the study area. Nam River society displays correlates matching group-based society such as a trend towards production in large houses, lack of centrally located production, and small-scale megalithic burials. Centralization of settlement, stone tool and jade production, burials, large houses with production and prestige artifacts, and ditch-enclosures did not occur. In Phase II (600 to 450 B.C.) social transformation towards greater elite involvement in production is shown by the development of multifunctional production zones in Ogbang and Sanch'ong, restriction of stone tool production based on structure size, a large increase of stone cist burials with prestige artifacts, jade production in relatively small "workshops", and the construction of ditches for protection. Ditch-enclosures are associated with the protection of elite houses rather than production areas. It is concluded that the Nam River settlement system reflects group-based models with weak elites, but incipient individualizing modes were beginning in the organization of multi functional production areas, defense, and increased use of prestige artifacts in burials.
Vietnam Stock market after Covid-19 Pandemic Opportunities and Challenges
Creators: name: Ly, Thanh Long
Publisher: name: figshare
Year: 2021
Subjects: subject: 150205 Investment and Risk Management
subject: FOS: Economics and business
subject: 150201 Finance

description: Abstract: The study explores the COVID-19 pandemic outbreak impacts on Vietnam Stock Market as well as discusses the methodical sequence & outlines the opportunities and challenges to this fast-growing emerging market. This paper determines that the Vietnamese government's responses and adjustments, supporting acts in the securities sector, explain how Vietnam Stock Market rebounds during and after the lockdown. The concluding section of this study examines options and priorities for the future.
Keywords: Vietnam Stock Market; Pandemic; COVID-19; financial markets; market reaction
JEL classification: D81, D84, G14, G32, K22
Water Pollution Taxes: A Good Idea Doomed to Failure?
Creators: name: Boyd, James
name: Boyd, James
Publisher: name: Unknown
Year: 2003
Subjects: subject: Environmental Economics and Policy
subject: water quality
subject: effluent fees
subject: market-based incentives

description: Water pollution taxes, or effluent fees, have long been advocated by environmental economists as a regulatory approach to cost effectively achieve water quality improvements. The article reviews the arguments in favor of taxes and traces the history of the idea in U.S. policy debates. Particular attention is given to the institutional challenges presented by a tax system and its application in watershed contexts where transport phenomena are important. The article also addresses the question of why effluent taxes are so rarely seen in practice.
Strukturen der Ungerechtigkeit und Kampf um Befreiung
Creators: name: Nēsiōtēs, Nikos A.
Publisher: name: Ökumenische Rundschau
Year: 2025

description: Ökumenische Rundschau, Bd. 24 Nr. 3 (1975): Ökumenische Rundschau, Band 24, Heft 3
Air Pollution Control Policy Options for Metro Manila
Creators: name: Krupnick, Alan J.
name: Morgenstern, Richard D.
name: Fischer, Carolyn
name: Rolfe, Kevin
name: Logarta, Jose
name: Rufo, Bing
name: Krupnick, Alan J.
name: Morgenstern, Richard D.
name: Fischer, Carolyn
name: Rolfe, Kevin
name: Logarta, Jose
name: Rufo, Bing
Publisher: name: Unknown
Year: 2003
Subjects: subject: Environmental Economics and Policy
subject: air pollution
subject: emissions tax
subject: Philippines
subject: particulates

description: The Asian Development Bank has sponsored research on market-based instruments for managing pollution in Metro Manila, Philippines, where air quality is seriously degraded. This report offers three policy options for reducing particulate emissions and their precursors. For stationary sources, we recommend an emissions fee that creates efficient financial incentives to reduce emissions while raising revenues for monitoring and enforcement activities. For mobile sources, we propose a pilot diesel retrofit program using a low-cost technology that is effective at existing 2,000 ppm sulfur content. Second, we recommend a charge on the sulfur content of diesel fuel to encourage meeting and surpassing the 500 ppm standard to allow for more advanced particulate trap technologies. Although better data are needed-both for designing controls and for evaluating their efficacy-much can be learned just by implementing these programs, so we make recommendations for starting points.
Accelerating Universes from Short-Range Interactions
Creators: name: Diez-Tejedor, Alberto
name: Feinstein, Alexander
Publisher: name: arXiv
Year: 2005
Subjects: subject: General Relativity and Quantum Cosmology (gr-qc)
subject: Astrophysics (astro-ph)
subject: High Energy Physics - Theory (hep-th)
subject: FOS: Physical sciences

description: We show that short-range interactions between the fundamental particles in the universe can drive a period of accelerated expansion. This description fits the early universe. In the present day universe, if one postulates short-range interactions or a sort of "shielded gravity", the picture may repeat.
description: 4 pages, 1 figure. Discussion expanded. Some references added. Matches version in print. To appear in Phys. Lett. A
Projecting Productivity Growth: Lessons from the U.S. Growth Resurgence
Creators: name: Jorgenson, Dale W.
name: Ho, Mun S.
name: Stiroh, Kevin J.
name: Jorgenson, Dale W.
name: Ho, Mun S.
name: Stiroh, Kevin J.
Publisher: name: Unknown
Year: 2002
Subjects: subject: Productivity Analysis
subject: productivity
subject: information technology

description: This paper analyzes the sources of U.S. labor productivity growth in the post-1995 period and presents projections for both output and labor productivity growth for the next decade. Despite the recent downward revisions to U.S. GDP and software investment, we show that information technology (IT) played a substantial role in the U.S. productivity revival. We then outline a methodology for projecting trend output and productivity growth. Our base-case projection puts the rate of trend productivity growth at 2.21% per year over the next decade with a range of 1.33 - 2.92%, reflecting fundamental uncertainties about the rate of technological progress in IT-production and investment patterns. Our central projection is only slightly below the average growth rate of 2.36% during the 1995-2000 period.
Ephippiorthoceras Foerste 1924
Creators: name: Kröger, Björn
Publisher: name: Zenodo
Year: 2025
Subjects: Biodiversity
Taxonomy
Animalia
Mollusca
Cephalopoda
Orthocerida
Proteoceratidae
Ephippiorthoceras

description: Genus Ephippiorthoceras Foerste, 1924
Type species
Orthoceras formosum Billings, 1857, from English Head, Anticosti Island, Quebec, Canada, English Head formation, zone 3 or 4 (Foerste 1928c) (= Vauréal Formation, see Achab et al. 2011), late Katian; by original designation.
Diagnosis
Orthocones with circular to slightly compressed conch cross section; smooth or ornamented with fine transverse and /or longitudinal striae and lirae or coarse oblique plications; sutures form distinct broad lateral lobes; siphuncle subcentral to central, cyrtochoanitic septal necks; siphuncular segments expanded slendering adorally, parietal endosiphuncular deposits occur. (Compiled from Flower 1962, and Sweet 1964c.)
Remarks
Flower (1962: 33) assigned Ephippiorthoceras into his newly erected Proteoceratidae and justified it, without being more specific, among other arguments with the comment “other material indicates adoral slendering of the segments of the siphuncle.” Sweet (1964c: K256) assigned the genus with question into the Proteoceratidae and remarked that: “Details of the interior are not known in the type-species […] Ephippiorthocras is probably a pseudorthoceratid rather than a proteoceratid.” The material described herein suggests that Flower’s (1962) original evaluation was correct. In the Estonian specimens, a clear tendency for proteoceratid-like “slendering” is apparent. Moreover, the position of the siphuncle becomes more eccentric in later growth stages (see below).
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 34, DOI: 10.5852/ejt.2025.978.2801, http://zenodo.org/record/14988376
Searching for the Profit in Pollution Prevention: Case Studies in the Corporate Evaluation of Environmental Opportunities
Creators: name: Boyd, James
name: Boyd, James
Publisher: name: Unknown
Year: 1998
Subjects: subject: Environmental Economics and Policy
subject: pollution prevention
subject: financial evaluation
subject: environmental accounting

description: The concept of pollution prevention, or "P2," signifies a new, proactive environmental mindset that targets the causes, rather than the consequences, of polluting activity. While anecdotal evidence suggests that P2 opportunities exist and that many have been pursued, there is also the perception that the pace of P2 is far too slow. To explore that claim--and to shed light on barriers to P2 innovation--this paper presents case studies of industrial P2 projects that were in some way unsuccessful. While based on a very limited sample, the evidence contradicts the view that firms suffer from organizational weaknesses that make them unable to appreciate the financial benefits of P2 investments. Instead, the projects foundered because of significant unresolved technical difficulties, marketing challenges, and regulatory barriers. Based on evidence from the cases, the paper concludes with a discussion of environmental policy reforms likely to promote P2 innovation.
[Plant and Animal ID and Conversation Sample]
Creators: name: Fillmore, Laura
name: Holbrook, Herman
Publisher: name: California Language Archive, University of California, Berkeley
Year: 2015
Subjects: subject: was
subject: Washo language

description: Elicitation of plants and animals, followed by a conversation sample between Herman Hollbrook (consultant) and Laura Fillmore (learner), in Washo with translations into English.
Shannon Entropy: Axiomatic Characterization and Application
Creators: name: Chakrabarti, C. G.
name: Chakrabarty, Indranil
Publisher: name: arXiv
Year: 2005
Subjects: subject: Quantum Physics (quant-ph)
subject: FOS: Physical sciences

description: We have presented a new axiomatic derivation of Shannon Entropy for a discrete probability distribution on the basis of the postulates of additivity and concavity of the entropy function.We have then modified shannon entropy to take account of observational uncertainty.The modified entropy reduces, in the limiting case, to the form of Shannon differential entropy. As an application we have derived the expression for classical entropy of statistical mechanics from the quantized form of the entropy.
description: 11 pages
A new mechanism of structural transition in 2D Hertzian spheres in the presence of random pinning
Creators: name: Tsiok, E. N.
name: Fomin, Yu. D.
name: Gaiduk, E. A.
name: Ryzhov, V. N.
Publisher: name: arXiv
Year: 2020
Subjects: subject: Soft Condensed Matter (cond-mat.soft)
subject: FOS: Physical sciences

description: Using molecular dynamics simulation we have investigated the influence of random pinning on the phase diagram and melting scenarios of a two-dimensional (2D) system with the Hertz potential for $α=5/2$. For the first time it has been shown that random pinning can cardinally change the mechanism of first-order transition between the different crystalline phases (triangular and square) by virtue of generating hexatic and tetratic phases: a triangular crystal to hexatic transition is of the continuous Berezinskii-Kosterlitz-Thouless (BKT) type, a hexatic to tetratic transition is of the first-order, and finally, a continuous BKT type transition from tetratic to the square crystal.
description: 12 pages, 15 figures
Demand-Side Management Programs Under Retail Electricity Competition
Creators: name: Brennan, Timothy J.
name: Brennan, Timothy J.
Publisher: name: Unknown
Year: 1998
Subjects: subject: Resource /Energy Economics and Policy
subject: electricity restructuring
subject: energy conservation
subject: regulatory policy

description: Demand-side management programs comprise subsidies from franchised electric utilities for the purchase of high-efficiency appliances; e.g., air conditioners. Competition in power generation threatens the viability of these programs. However, it should also reduce the warrant for them. Under regulation, the justification for such programs depends, somewhat paradoxically, on below marginal-cost pricing. Eliminating regulation should permit pricing flexibility to discourage excessive on-peak energy use. It should also eliminate the assurance of returns that may have encouraged overbuilding of generation capacity. Entrants and incumbent utilities should find it easier to offer "energy services," i.e., to bundle electricity with appliances, if consumers are too myopic to realize the benefits of increasing energy efficiency. Environmental degradation remains a problem, but competition can improve the performance of incentive-based regulations (e.g., permit trades), reducing the value of DSM as a supplemental, second-best alternative.
Isotopic mass separation with the RICH detector of the AMS Experiment
Creators: name: Arruda, Luísa
name: Barão, Fernando
name: Borges, João
name: Gonçalves, Patrícia
name: Pereira, Rui
name: Pimenta, Mário
name: Carmo, Fernando
Publisher: name: arXiv
Year: 2008
Subjects: subject: Astrophysics (astro-ph)
subject: FOS: Physical sciences

description: The Alpha Magnetic Spectrometer (AMS) to be installed on the International Space Station (ISS) will be equipped with a proximity focusing Ring Imaging Cerenkov detector (RICH). Reconstruction of the Cerenkov angle and the electric charge with RICH are discussed. A likelihood method for the Cerenkov angle reconstruction was applied leading to a velocity determination for protons with a resolution around 0.1%. The electric charge reconstruction is based on the counting of the number of photoelectrons and on an overall efficiency estimation on an event-by-event basis. The isotopic mass separation of helium and beryllium is presented.
description: 6 pages. Contribution to the International School of Cosmic Ray Astrophysics- 15th Course Astrophysics at Ultra-High Energies (Erice, Italy, 2006). Presenter: Luisa Arruda
Technology Adoption and Aggregate Energy Efficiency
Creators: name: Pizer, William A.
name: Harrington, Winston
name: Kopp, Raymond J.
name: Morgenstern, Richard D.
name: Shih, Jhih-Shyang
name: Pizer, William A.
name: Harrington, Winston
name: Kopp, Raymond J.
name: Morgenstern, Richard D.
name: Shih, Jhih-Shyang
Publisher: name: Unknown
Year: 2002
Subjects: subject: Research and Development/Tech Change/Emerging Technologies
subject: energy efficiency
subject: endogenous technological change
subject: technology adoption

description: Improved technology is often cited as a means to alter the otherwise difficult trade-off between the economic burden of regulation and environmental damage. Focusing on energy-saving technologies that mitigate the threat of climate change, we find that both energy prices and financial health influence technology adoption among a sample of industrial plants in four heavily polluting sectors. Based on a model linking technology adoption to growth in aggregate efficiency, we estimate that a doubling of energy prices, after raising the growth rate to 2.1%, would require slightly more than 50 years to generate a 50% improvement in aggregate efficiency relative to the baseline forecast.
Thermal effects and spontaneous frictional relaxation in atomically thin layered materials
Creators: name: Sheehan, J Roadnight
name: Andersson, David
name: de Wijn, Astrid S.
Publisher: name: arXiv
Year: 2020
Subjects: subject: Mesoscale and Nanoscale Physics (cond-mat.mes-hall)
subject: Materials Science (cond-mat.mtrl-sci)
subject: Statistical Mechanics (cond-mat.stat-mech)
subject: FOS: Physical sciences

description: We study the thermal effects on the frictional properties of atomically thin sheets. We simulate a simple model based on the Prandtl-Tomlinson model that reproduces the layer dependence of friction and strengthening effects seen in AFM experiments. We investigate sliding at constant speed as well as reversing direction. We also investigate contact aging: the changes that occur to the contact when the sliding stops completely. We compare the numerical results to analytical calculations based on Kramers rates. We find that there is a slower than exponential contact aging that weakens the contact and that we expect will be observable in experiments. We discuss the implications for sliding as well as aging experiments.
description: 12 pages. 10 figures
The Changing Mind. From neural plasticity to cognitive modifiability. A tribute to Margiotta
Creators: name: Morselli, Daniele
Publisher: name: Zenodo
Year: 2011
Subjects: neural plasticity
structural cogntive modifiability
mediated learning experience
Feuerstein Instrumental Enrichment

description: Margiotta, U. (2011a). Preface. In U. Margiotta (Ed.), The Changing Mind. From neural plasticity to cognitive modifiability (pp. 7-10). Lecce: Pensa Multimedia. Falik, L. H. (2011). The Feuerstein vision for developing nations. A prospectus. In U. Margiotta (Ed.), The Changing Mind. From neural plasticity to cognitive modifiability (pp. 11-19). Lecce: Pensa Multimedia. Margiotta, U. (2011b). The structure of cognitive modifiability: A new deal for education in the XXI century. In U. Margiotta (Ed.), The Changing Mind. From neural plasticity to cognitive modifiability (pp. 317-353). Lecce: Pensa Multimedia.
XMM-Newton spectroscopy of high-redshift QSOs
Creators: name: Page, K. L.
name: Reeves, J. N.
name: O'Brien, P. T.
name: Turner, M. J. L.
Publisher: name: arXiv
Year: 2005
Subjects: subject: Astrophysics (astro-ph)
subject: FOS: Physical sciences

description: XMM-Newton observations of 29 high redshift (z>2) quasars, including seven radio-quiet, 16 radio-loud and six Broad Absorption Line (BAL) objects, are presented; due to the high redshifts, the rest-frame energy bands extend up to \~30-70 keV. Over 2-10 keV, the quasars can be well fitted in each case by a simple power-law, with no strong evidence for iron emission lines. The lack of iron lines is in agreement both with dilution by the radio jet emission (for the radio-loud quasars) and the X-ray Baldwin effect. No Compton reflection humps at higher energies (i.e., above 10 keV in the rest frame) are detected either. Over the broad-band (0.3-10 keV), approximately half (nine out of 16) of the radio-loud quasars are intrinsically absorbed, with the values of N_H generally being 1-2 x 10^22 cm^-2 in the rest frames of the objects. None of the seven radio-quiet objects shows excess absorption, while four of the six BAL quasars are absorbed. The radio-loud quasars have flatter continuum slopes than their radio-quiet counterparts (Gamma_RL ~ 1.55; Gamma_RQ ~ 1.98 over 2-10 keV), while, after modelling the absorption, the underlying photon index for the six BAL quasars is formally consistent with the non-BAL radio-quiet objects.
description: 15 pages, 7 figures, accepted for publication in MNRAS
Workshop Report: Advancing the Art of Analyzing Risks and Benefits of Dredged Material Management
Creators: name: Wilson, James D.
name: Wilson, James D.
Publisher: name: Unknown
Year: 2002
Subjects: subject: Environmental Economics and Policy
subject: dredging
subject: risk
subject: benefit
subject: cost
subject: analysis
subject: characterization
subject: accidents
subject: mixtures
subject: sediments
subject: non-use benefits
subject: decision tools

description: The U.S. Army Corps of Engineers has been delegated responsibility for assuring the navigability of waters designated for that purpose in the United States. Dredging is among the activities required to fulfill this responsibility. In some places, the Corps finds difficulty in carrying out dredging projects because it lacks spaces where the sediments that must be removed ("dredged materials") can be placed or otherwise managed. In these cases, the public has expressed concerns about the impacts of dredged materials on the environment, either underwater or on land ("upland"). Thus, the Corps often finds it necessary to be able to evaluate and describe the costs or risks and the benefits of the possible alternatives that may be available. Scientists and engineers at the Engineer Research and Development Center (ERDC) in Vicksburg, MS, are responsible for advising Corps District and Division project managers concerning methods to evaluate these risks and benefits. The ERDC asked Resources for the Future (RFF) to organize a workshop for key management and technical people within the Corps and selected outside experts to explore directions the Corps might take in order to improve those methods.
Jinan in the first millennium B.C. : archaeology and structural history
Creators: name: Li, Min
Publisher: name: University of British Columbia
Year: 2009

description: This thesis is an archaeological study of social changes in the Jinan Region, eastern China, during the first millennium B.C., using settlement pattern and burial analysis. Taking a multiscalar approach of structural history, I examined local manifestations of political and economic centralization in relation to long-term structural changes in technology, landscape, and mentality. Settlement pattern analysis revealed trends of increasing territorial control, expanding use of metal in local sites, increasing specialization in craft production, and rising state intervention in exchange and production. Analysis of ritual assemblages in burials suggested changes in the nature of political authority, in social relations, and in attitudes towards political and economic changes among various sectors of local population. Against the deeply entrenched structure of kinship solidarity, the rise and decline of militarism, social mobility, and an increasing perception that the state-defined economic order continued into the afterlife were expressed in burial rituals as Jinan society was gradually incorporated into imperial China. Through a comparative study of general trends from the two types of analysis, the research provided archaeological evidence for a transition from a lineage-based political structure to a centralized political structure characteristic of imperial China. Structural conditions, including landscape, technology, and mentality preconditioned the local mediations of historical forces emanating from the larger society and were transformed by changes in the socioeconomic arena. I concluded that an appreciation of the historically specific conjunction of forces operating at different temporal scales in the local society is critical in understanding the way that the final entry of Jinan into the imperial China was realized and imperial life and values were consolidated in the local historical landscape. It is through the local mediations of people in their changing socioeconomic circumstances deriving from the sociopolitical development of the medium temporal scale that long-term, structural changes in technology, economy, and mentality, such as the introduction of iron technology, the threshold of monetary economy, and the formation of an imperial ideology, were brought to the local life in their historically specific manifestations.
Black Holes in the Ghost Condensate
Creators: name: Mukohyama, Shinji
Publisher: name: arXiv
Year: 2005
Subjects: subject: High Energy Physics - Theory (hep-th)
subject: Astrophysics (astro-ph)
subject: General Relativity and Quantum Cosmology (gr-qc)
subject: High Energy Physics - Phenomenology (hep-ph)
subject: FOS: Physical sciences

description: We investigate how the ghost condensate reacts to black holes immersed in it. A ghost condensate defines a hypersurface-orthogonal congruence of timelike curves, each of which has the tangent vector u^μ=-g^{μν}\partial_νϕ. It is argued that the ghost condensate in this picture approximately corresponds to a congruence of geodesics. In other words, the ghost condensate accretes into a black hole just like a pressure-less dust. Correspondingly, if the energy density of the ghost condensate at large distance is set to an extremely small value by cosmic expansion then the late-time accretion rate of the ghost condensate should be negligible. The accretion rate remains very small even if effects of higher derivative terms are taken into account, provided that the black hole is sufficiently large. It is also discussed how to reconcile the black hole accretion with the possibility that the ghost condensate might behave like dark matter.
description: 11 pages, 2 figures. Version accepted for publication in Physical Review D. Some contents in introductory sections were deleted but included in hep-th/0505080. Main results and claims remain unchanged
Valuation of Biodiversity for Use in New Product Research in a Model of Sequential Search
Creators: name: Simpson, R. David
name: Sedjo, Roger A.
name: Simpson, R. David
name: Sedjo, Roger A.
Publisher: name: Unknown
Year: 1996
Subjects: subject: Environmental Economics and Policy
subject: biodiversity
subject: search
subject: sequential
subject: conservation incentives

description: We develop a model of search in which a researcher chooses the size of sequential batches of samples to test. While earlier work has considered similar questions, the contribution of this paper is to use the search model to place a value on the marginal research opportunity. The valuation of such opportunities may be of little interest or relevance in many of the contexts in which search models are employed, but we apply our analysis to an area of considerable societal interest: the valuation of biological diversity for use in new product research. While data from which to make inferences are limited, we find that, using plausible estimates of relevant parameters, the value of biodiversity in these applications is negligible.
[Washo Language Circle Class]
Creators: name: Andrews, Sylvia
name: Barber, Amy
name: Dressler, Marvin
name: Holbrook, Herman
name: James, Steven
name: Jim, Harvey
name: McDonald, Daniel
name: Smokey, Eleanore
name: Wyatt, Tina
Publisher: name: California Language Archive, University of California, Berkeley
Year: 2015
Subjects: subject: was
subject: Washo language

description: Recording of a meeting of a group of Washo speakers; the speakers engage in general conversation and take turns at being the main speaker. Conversation in Washo and English; an associated transcription is in 2014-21.002.064.
Amplitude and Phase Fluctuations for Gravitational Waves Propagating through Inhomogeneous Mass Distribution in the Universe
Creators: name: Takahashi, Ryuichi
Publisher: name: arXiv
Year: 2005
Subjects: subject: Astrophysics (astro-ph)
subject: General Relativity and Quantum Cosmology (gr-qc)
subject: FOS: Physical sciences

description: When a gravitational wave (GW) from a distant source propagates through the universe, its amplitude and phase change due to gravitational lensing by the inhomogeneous mass distribution. We derive the amplitude and phase fluctuations, and calculate these variances in the limit of a weak gravitational field of density perturbation. If the scale of the perturbation is smaller than the Fresnel scale $\sim 100 {pc} (f/{mHz})^{-1/2}$ ($f$ is the GW frequency), the GW is not magnified due to the diffraction effect. The rms amplitude fluctuation is $1-10 %$ for $f > 10^{-10}$ Hz, but it is reduced less than 5% for a very low frequency of $f < 10^{-12}$ Hz. The rms phase fluctuation in the chirp signal is $\sim 10^{-3}$ radian at LISA frequency band ($10^{-5} - 10^{-1}$ Hz). Measurements of these fluctuations will provide information about the matter power spectrum on the Fresnel scale $\sim 100$ pc.
description: 6 pages, 6 figures, refferences added, accepted for publication in ApJ
PROFITABILITY AND PRODUCTION EFFICIENCY OF THE CROP AND LIVESTOCK ENTERPRISES OF MICHIGAN DAIRY OPERATIONS: 1998 SUMMARY AND ANALYSIS
Creators: name: Harsh, Stephen B.
name: Wolf, Christopher A.
name: Wittenberg, Eric
name: Harsh, Stephen B.
name: Wolf, Christopher A.
name: Wittenberg, Eric
Publisher: name: Unknown
Year: 2001
Subjects: Productivity Analysis

description: This paper summarizes the 1998 results of the Dairy Profitability and Production Efficiency project. Among the major findings are that the average cost of production was almost exactly equal to the average milk herd revenue on a per hundredweight basis. All eight farms covered variable costs of producing milk. Five of the eight farms showed a profit when all costs of production were included. All six farms that raised their own replacement heifers lost money on the enterprise. With respect to crop production, corn and corn silage were not profitable enterprises. The hay enterprise was profitable for five of the farms.
Current Fluctuations in the exclusion process and Bethe Ansatz
Creators: name: Prolhac, Sylvain
name: Mallick, Kirone
Publisher: name: arXiv
Year: 2008
Subjects: subject: Statistical Mechanics (cond-mat.stat-mech)
subject: FOS: Physical sciences

description: We use the Bethe Ansatz to derive analytical expressions for the current statistics in the asymmetric exclusion process with both forward and backward jumps. The Bethe equations are highly coupled and this fact has impeded their use to derive exact results for finite systems. We overcome this technical difficulty by a reformulation of the Bethe equations into a one variable polynomial problem, akin to the functional Bethe Ansatz. The perturbative solution of this equation leads to the cumulants of the current. We calculate here the first two orders and derive exact formulae for the mean value of the current and its fluctuations.
description: 17 pages
Right for the Right Concept: Revising Neuro-Symbolic Concepts by Interacting with their Explanations
Creators: name: Stammer, Wolfgang
name: Schramowski, Patrick
name: Kersting, Kristian
Publisher: name: arXiv
Year: 2020
Subjects: subject: Machine Learning (cs.LG)
subject: Artificial Intelligence (cs.AI)
subject: FOS: Computer and information sciences

description: Most explanation methods in deep learning map importance estimates for a model's prediction back to the original input space. These "visual" explanations are often insufficient, as the model's actual concept remains elusive. Moreover, without insights into the model's semantic concept, it is difficult -- if not impossible -- to intervene on the model's behavior via its explanations, called Explanatory Interactive Learning. Consequently, we propose to intervene on a Neuro-Symbolic scene representation, which allows one to revise the model on the semantic level, e.g. "never focus on the color to make your decision". We compiled a novel confounded visual scene data set, the CLEVR-Hans data set, capturing complex compositions of different objects. The results of our experiments on CLEVR-Hans demonstrate that our semantic explanations, i.e. compositional explanations at a per-object level, can identify confounders that are not identifiable using "visual" explanations only. More importantly, feedback on this semantic level makes it possible to revise the model from focusing on these factors.
Spectroscopic Identification of a Proto-Cluster at z=2.300: Environmental Dependence of Galaxy Properties at High Redshift
Creators: name: Steidel, Charles C.
name: Adelberger, Kurt L.
name: Shapley, Alice E.
name: Erb, Dawn K.
name: Reddy, Naveen A.
name: Pettini, Max
Publisher: name: arXiv
Year: 2005
Subjects: subject: Astrophysics (astro-ph)
subject: FOS: Physical sciences

description: We have discovered a highly significant over-density of galaxies at z=2.300+/-0.015 in the course of a redshift survey designed to select star-forming galaxies in the redshift range z=2.3+/-0.4 in the field of the bright z=2.72 QSO HS1700+643. The structure has a redshift-space galaxy over-density of delta_g,z ~= 7 and an estimated matter over-density in real space of delta_m ~= 1.8, indicating that it will virialize by z~0 with a mass scale of ~= 1.4x10^15 M_sun, that of a rich galaxy cluster. Detailed modeling of the spectral energy distribution -- from the rest-far-UV to the rest-near-IR -- of the 72 spectroscopically confirmed galaxies in this field for which we have obtained K_s and Spitzer/IRAC photometry, allows for a first direct comparison of galaxy properties as a function of large-scale environment at high redshift. We find that galaxies in the proto-cluster environment have mean stellar masses and inferred ages that are ~2 times larger (at z=2.30) than identically UV-selected galaxies outside of the structure, and show that this is consistent with simple theoretical expectations for the acceleration of structure formation in a region that is over-dense on large scales by the observed amount. The proto-cluster environment contains a significant number of galaxies that already appear old, with large stellar masses (>10^11 M_sun), by z=2.3.
description: 7 pages including 3 figures. Accepted for publication in ApJ. Typo corrected
Liquid crystal pretilt control by inhomogeneous surfaces
Creators: name: Wan, Jones T. K.
name: Tsui, Ophelia K. C.
name: Kwok, Hoi-Sing
name: Sheng, Ping
Publisher: name: arXiv
Year: 2005
Subjects: subject: Soft Condensed Matter (cond-mat.soft)
subject: FOS: Physical sciences

description: We consider the pretilt alignment of nematic liquid crystal (LC) on inhomogeneous surface patterns comprising patches of homeotropic or homogeneous alignment domains, with azimuthal anisotropy assumed in the surface plane. We found that the resultant LC pretilt generally increases continuously from the homogeneous limit to the homeotropic limit as the area fraction of the homeotropic region increases from 0 to 1. The variations are qualitatively different depending on how the distance between patches compares to the extrapolation length of the stronger anchoring domain. Our results agree with those previously found in stripped patterns. The present findings may provide useful guidelines for designing inhomogeneous alignment surfaces for variable LC pretilt control - a subject of much technological interest in recent years.
description: 7 pages, 4 figures
As publicações em Acesso Aberto na Faculdade de Letras da Universidade de Lisboa: análise bibliométrica
Creators: name: Lima da Silva Junior, Carlos
name: Henderson Barbosa, Bruna
name: Ferreira da Costa, Maria da Teresa
Publisher: name: Zenodo
Year: 2024

description: Apresentação realizada na sessão “O meu Póster em 1 minuto”, da 15ª Conferência Lusófona de Ciência Aberta, na Escola Superior de Enfermagem do Porto (ESEP), de 01 a 04 de outubro de 2024.
Detecting resonant tidal excitations of Rossby modes in coalescing neutron-star binaries with third-generation gravitational-wave detectors
Creators: name: Ma, Sizheng
name: Yu, Hang
name: Chen, Yanbei
Publisher: name: arXiv
Year: 2020
Subjects: subject: General Relativity and Quantum Cosmology (gr-qc)
subject: High Energy Astrophysical Phenomena (astro-ph.HE)
subject: FOS: Physical sciences

description: Rossby modes (r-modes) of rotating neutron stars can be excited by the gravitomagnetic forces in coalescing binary systems. The previous study by Flanagan and Racine [Phys. Rev. D 75, 044001 (2007)] showed that this kind of dynamical tide (DT) can induce phase shifts of 0.1 rad on gravitational waveforms, which is detectable by third-generation (3G) detectors. In this paper, we study the impact of this DT on measuring neutron-star parameters in the era of 3G detectors. We incorporate two universal relations among neutron star properties predicted by different equations of state: (i) the well-known I-Love relation between momentum of inertia and (f-mode) tidal Love number, and (ii) a relation between the r-mode overlap and tidal Love number, which is newly explored in this paper. We find that r-mode DT will provide rich information about slowly rotating neutron stars with frequency ranging from 10 to 100 Hz. For a binary neutron star system (with a signal-to-noise ratio around 1500 in the Cosmic Explorer), the spin frequency of each individual neutron star can be constrained to 6% (fractional error) in the best-case scenario. The degeneracy between the Love numbers of individual neutron stars is dramatically reduced: each individual Love number can be constrained to around 20% in the best case, while the fractional error for both symmetric and anti-symmetric Love numbers are reduced by factors of around 300. Furthermore, DT also allows us to measure the spin inclination angles of the neutron stars, to 0.09 rad in the best case, and thus place constraints on NS natal kicks and supernova explosion models. Besides parameter estimation, we have also developed a semi-analytic method that accurately describes detailed features of the binary evolution that arise due to the DT.
On super-Jordanian ${\cal U}_{\sf h}(sl(N|1))$ algebra
Creators: name: Abdesselam, B.
name: Chakrabarti, A.
name: Chakrabarti, R.
name: Yanallah, A.
name: Zahaf, M. B.
Publisher: name: arXiv
Year: 2005
Subjects: subject: Quantum Algebra (math.QA)
subject: FOS: Mathematics

description: A nonlinear realisation of the nonstandard (super-Jordanian) deformed ${\cal U}_{\sf h}(sl(N|1))$ algebra is given for arbitrary $N$.
ANALYSIS OF IMPORT DEMAND FOR U.S. FRESH GRAPES: AN APPLICATION OF THE ROTTERDAM MODEL
Creators: name: Weatherspoon, Dave D.
name: Davis, Christopher G.
name: Olorunnipa, Zacch
name: Weatherspoon, Dave D.
name: Davis, Christopher G.
name: Olorunnipa, Zacch
Publisher: name: Unknown
Year: 1999
Subjects: Crop Production/Industries
International Relations/Trade

description: The Rotterdam model was used to determine the demand for fresh table grapes in Canada, Japan, and Sweden from 1971-1990. Results of elastic expenditure elasticities and cross price elasticities indicating that U.S. grapes are considered substitutes for grapes from other countries, suggest that the U.S. grape producers have a competitive edge in these countries. The trade agreements and trade negotiations with Canada and Japan will assist in making relative prices lower for U.S. grapes, encouraging their consumption. Lastly, Canada, Japan, and Sweden are all expected to grow in wealth, as well as their demand for fruit, especially grapes.
D_s (2317) as a four-quark state in QCD sum rules
Creators: name: Kim, Hungchong
name: Oh, Yongseok
Publisher: name: arXiv
Year: 2005
Subjects: subject: High Energy Physics - Phenomenology (hep-ph)
subject: FOS: Physical sciences

description: We perform a QCD sum rule study of the open-charmed $D_s (2317)$ as a four-quark state. Using the diquark-antidiquark picture for the four-quark state, we consider four possible interpolating fields for $D_s (2317)$, namely, scalar-scalar, pseudoscalar-pseudoscalar, vector-vector, and axial-vector--axial-vector types. We test all four currents by constructing four separate sum rules. The sum rule with the scalar-scalar current gives a stable value for the $D_s$ mass which qualitatively agrees with the experimental value, and the result is not sensitive to the continuum threshold. The vector-vector sum rule also gives a stable result with small sensitivity to the continuum threshold and the extracted mass is somewhat lower than the scalar-scalar current value. On the other hand, the two sum rules in the pseudoscalar and axial-vector channels are found to yield the mass highly sensitive to the continuum threshold, which implies that a four-quark state with the combination of pseudoscalar-pseudoscalar or axial-vector--axial-vector type would be disfavored. These results would indicate that $D_s (2317)$ is a bound state of scalar-diquark and scalar-antidiquark and/or vector-diquark and vector-antidiquark.
description: 10 pages, 4 figures, REVTeX, 1 fig. added. to appear in Phys. Rev. D
Implications of the Dark-LMA solution for neutrino mass matrices
Creators: name: Ghosh, Monojit
name: Goswami, Srubabati
name: Mukherjee, Ananya
Publisher: name: arXiv
Year: 2020
Subjects: subject: High Energy Physics - Phenomenology (hep-ph)
subject: FOS: Physical sciences

description: In this work we have re-investigated two different kinds of texture zero ansatz of the low energy neutrino mass matrix in view of the Dark-Large-Mixing-Angle (DLMA) solution of the solar neutrino problem which can arise in the presence of non-standard interactions. In particular we revisit the cases of (i) one zero mass matrices when the lowest neutrino mass is zero and (ii) one zero texture with a vanishing minor. In our study we find that for most of the cases, the texture zero conditions which are allowed for the LMA solution, are also allowed for the DLMA solution. However, we found two textures belonging to the case of one zero texture with a vanishing minor where LMA solution does not give a viable solution whereas DLMA solution does. We analyze all the possible texture zero cases belonging to these two kinds of texture zero structures in detail and present correlations between different parameters. We also present the predictions for the effective neutrino mass governing neutrino-less double beta decay for the allowed textures.
description: 18 pages, 5 figures. To appear in Nucl. Phys. B
[Frank Morgan Washo Texts II]
Creators: name: Frank, John
name: Mordy, Brooke
Publisher: name: California Language Archive, University of California, Berkeley
Year: 2015
Subjects: subject: was
subject: Washo language

description: This recording is noted as a continuation of 2014-21.003.002 that includes the following texts: “continuation of ‘Acorn Preparation’, “Story of peʔwéc’eliʔ and damálaliʔ”, “Rabbit hunting in the fall”, “Making a Rabbit-skin blanket”, “Story of the óŋ”, and “Building a galis dáŋal”. This tape is annotated as Tape #2 of 3; Tape #1 of 3 is in 2014-21.003.002 and Tape #3 is in 2014-21.006.004.
Quantum computing of semiclassical formulas
Creators: name: Georgeot, B.
name: Giraud, O.
Publisher: name: arXiv
Year: 2008
Subjects: subject: Quantum Physics (quant-ph)
subject: Chaotic Dynamics (nlin.CD)
subject: FOS: Physical sciences

description: We show that semiclassical formulas such as the Gutzwiller trace formula can be implemented on a quantum computer more efficiently than on a classical device. We give explicit quantum algorithms which yield quantum observables from classical trajectories, and which alternatively test the semiclassical approximation by computing classical actions from quantum evolution. The gain over classical computation is in general quadratic, and can be larger in some specific cases.
description: 8 pages, 1 figure