cometadata/datacite-rtg-text-other-reclassification-records huggingface dataset:
Lifting the core-collapse supernova bounds on keV-mass sterile neutrinos
Creators: name: Suliga, Anna M.
name: Tamborra, Irene
name: Wu, Meng-Ru
Publisher: name: arXiv
Year: 2020
Subjects: subject: High Energy Astrophysical Phenomena (astro-ph.HE)
subject: High Energy Physics - Phenomenology (hep-ph)
subject: FOS: Physical sciences

description: We explore the energy and entropy transport as well as the lepton number variation induced from the mixing between electron and sterile neutrinos with keV mass in the supernova core. We develop a radial- and time-dependent treatment of the sterile-electron neutrino mixing, by including ordinary matter effects, reconversions between sterile and electron antineutrinos, as well as the collisional production of sterile particles for the first time. The dynamical feedback due to the production of sterile particles on the composition and thermodynamic properties of the core only leads to major implications for the supernova physics for large mixing angles ($\sin^2 2 θ> 10^{-10}$). Our findings suggest that a self-consistent appraisal of the electron-sterile conversion physics in the supernova core would relax the bounds on the sterile neutrino mixing parameters reported in the literature for mixing angles smaller than $10^{-6}$, leaving the parameter space of the mass and mixing angles of sterile neutrinos relevant to dark matter searches unconstrained by supernovae.
description: 30 pages, 15 figures. Minor changes, conclusions unchanged. Matches version accepted in JCAP
Finite Element and Pullout Test Performance of Welded Wire Mats
Creators: name: Conder, Bradley C.
Publisher: name: Utah State University
Year: 2002

description: This paper reports on the pullout test performance of welded-wire reinforcing mats. A 126-foot high mechanically stabilized earth wall was constructed at Kennecott Utah Copper. In the lower half of the wall, single lengths of 50-foot long welded-wire mats were used. In the top half of the wall, two lengths of 50-foot mats were overlapped 10 feet to create 90-foot mats. This 10-foot "lap zone" was investigated in this study.
The finite element program Plaxis was used to investigate several pullout test parameters: overburden pressure, gap width, boundary effects, and horizontal spacing of transverse elements from the pullout box face.
Physical pullout tests were performed in a scale pullout box to compare test configurations with single and multiple layers of mats, and test configurations with single and multiple lap zones. Finally, a Plaxis model of the scale pullout box was created to compare the finite element and pullout test results.
The State and Irrigation Reform in South Korea
Creators: name: Wade, Robert
name: Wade, Robert
Publisher: name: Unknown
Year: 1980
Subjects: Land Economics/Use

description: The South Korean irrigation reform of 1979 is an attempt to arrest certain trends in the financial allocations of Farmland Improvement Associations, which the government regards as harmful for the productivity of irrigated agriculture. The method is to restructure the decision-making environment of canal managers in such a way that they have a monetary incentive to decide on a more productive use of resources, against the short-term interests of FLIA members. Study of the response of FLIA staff to the new measures over the next several years offers an opportunity for an exploration of how the central govern­ment attempts to control local parastatal agencies, and of the reactions of their staff to those attempts. Such a study also allows an exploration of the compari­son with irrigation reform in Taiwan, and in particular, of the extent to which the differences in reform trajectory are due to differences in the value of irri­gation water between the two countries, or to differences in politics.
Phase Diagram and Critical Behavior of the Spin-1 Baxter-Wu Model with a Crystal Field
Creators: name: Costa, M. L. M.
name: Xavier, J. C.
name: Plascak, J. A.
Publisher: name: arXiv
Year: 2004
Subjects: subject: Statistical Mechanics (cond-mat.stat-mech)
subject: FOS: Physical sciences

description: The phase diagram and critical behavior of the spin-1 Baxter-Wu model with a crystal field in two dimensions is explored by renormalization group, conventional finite-size scaling and conformal invariance techniques. We found that the phase diagram of this model is qualitatively the same as that of the dilute 4-states Potts model, presenting a multi-critical point for a finite value of the crystal field, in disagreement with previous work based on finite-size calculations. However, our results indicate that the critical exponents vary continuously along the second-order transition line, differently from the expected behavior of the dilute 4-states Potts model.
description: 7 pages, 1 figure, 5 tables
Observation of two relaxation mechanisms in transport between spin split edge states at high imbalance
Creators: name: Deviatov, E. V.
name: Wurtz, A.
name: Lorke, A.
name: Melnikov, M. Yu.
name: Dolgopolov, V. T.
name: Reuter, D.
name: Wieck, A. D.
Publisher: name: arXiv
Year: 2003
Subjects: subject: Mesoscale and Nanoscale Physics (cond-mat.mes-hall)
subject: FOS: Physical sciences

description: Using a quasi-Corbino geometry to directly study electron transport between spin-split edge states, we find a pronounced hysteresis in the I-V curves, originating from slow relaxation processes. We attribute this long-time relaxation to the formation of a dynamic nuclear polarization near the sample edge. The determined characteristic relaxation times are 25 s and 200 s which points to the presence of two different relaxation mechanisms. The two time constants are ascribed to the formation of a local nuclear polarization due to flip-flop processes and the diffusion of nuclear spins.
description: Submitted to PRB
Analytic black hole perturbation approach to gravitational radiation
Creators: name: Sasaki, Misao
name: Tagoshi, Hideyuki
Publisher: name: arXiv
Year: 2003
Subjects: subject: General Relativity and Quantum Cosmology (gr-qc)
subject: FOS: Physical sciences

description: We review analytic methods to perform the post-Newtonian expansion of gravitational waves induced by a particle orbiting a massive compact body, based on the black hole perturbation theory. There exist two different methods of the post-Newtonian expansion. Both are based the Teukolsky equation. In one method, the Teukolsky equation is transformed into a Regge-Wheeler type equation that reduces to the standard Klein-Gordon equation in the flat space limit, while in the other method, which were introduced by Mano, Suzuki and Takasugi relatively recently, the Teukolsky equation is directly used in its original form. The former has an advantage that it is intuitively easy to understand how various curved space effects come into play. However, it becomes increasingly complicated when one goes on to higher and higher post-Newtonian orders. In contrast, the latter has an advantage that a systematic calculation to higher post-Newtonian orders is relatively easily implementable, but otherwise so mathematical that it is hard to understand the interplay of higher order terms. In this paper, we review both methods so that their pros and cons may be clearly seen. We also review some results of calculations of gravitational radiation emitted by a particle orbiting a black hole.
description: 49 pages, accepted for publication in Living Reviews in Relativity
Type Ia Supernova Sub-classes and Progenitor Origin
Creators: name: Ruiter, Ashley J.
Publisher: name: arXiv
Year: 2020
Subjects: subject: Solar and Stellar Astrophysics (astro-ph.SR)
subject: High Energy Astrophysical Phenomena (astro-ph.HE)
subject: FOS: Physical sciences

description: This paper presents a short review on the current state of SN Ia progenitor origin. Type Ia supernova explosions are observed to be widely diverse in peak luminosity, lightcurve width and shape, spectral features, and host stellar population environment. In the last decade alone, theoretical simulations and observational data have come together to seriously challenge the long-standing paradigm that all SNe Ia arise from explosions of Chandrasekhar mass white dwarfs. In this review I highlight some of the major developments (and changing views) of our understanding of the nature of SN Ia progenitor systems. I give a brief overview of binary star configurations and their plausible explosion mechanisms, and infer links between some of the various (observationally-categorized) SN Ia sub-classes and their progenitor origins from a theoretical standpoint.
description: v2: a few references added. 12 pages text + references (total 15 pages); 3 figures, 1 table. Proceedings article based on invited review talk for the IAU Symposium 357, "White Dwarfs as Probes of Fundamental Physics and Tracers of Planetary, Stellar, and Galactic Evolution," held in Hilo, Hawaii, 21-25 October 2019
The quadratic scalar radius of the pion and the mixed $π-K$ radius
Creators: name: Yndurain, F. J.
Publisher: name: arXiv
Year: 2003
Subjects: subject: High Energy Physics - Phenomenology (hep-ph)
subject: FOS: Physical sciences

description: We consider the quadratic scalar radius of the pion, $$, and the mixed $K-π$ scalar radius, $$. With respect to the second, we point out that the more recent (post-1974) experimental results in $K_{l3}$ decays imply a value, $=0.31\pm0.06 {\rm fm}^2$, which is about $2 σ$ above estimates based on chiral perturbation theory. On the other hand, we show that this value of $$ suggests the existence of a low mass S$\tfrac{1}{2}$ $Kπ$ resonance. With respect to $$, we contest the central value and accuracy of current evaluations, that give $=0.61\pm0.04 {\rm fm}^2$. Based on experiment, we find a robust lower bound of $\geq0.70\pm0.06 {\rm fm}^2$ and a reliable estimate, $=0.75\pm0.07 {\rm fm}^2$, where the error bars are attainable. This implies, in particular, that the chiral result for $$ is $1.4 σ$ away from experiment. We also comment on implications about the chiral parameter $\bar{l}_4$, very likely substantially larger (and with larger errors) than usually assumed.
description: PlainTeX file. Corrected asymptotic phase; numerical results unaffected
Marketing and Price Policies and Programs for Major Foods in Korea
Creators: name: Shin-Haeng, Huh
name: Shin-Haeng, Huh
Publisher: name: Unknown
Year: 1980
Subjects: subject: Marketing
subject: FOS: Economics and business

description: This paper addresses major agricultural marketing and price policies in Korea. The objectives of these policies are firstly to stabilize prices of agricultural products, secondly to raise farm incomes comparable to the incomes of those who work in non-farm sectors, and thirdly to establish a perfect market for agricultural produces. To achieve these objectives the government has initiated a number of measures including purchase programs, production and supply arrangements, mortgage loan, price controls, export promotion and import restrictions, producer subsidies, and disaster payments. By reviewing the policy instruments one indicates that many of the detailed implementary programs paper to be poor primarily because of the lack of scientific knowledge and financial support. More importantly, what Korea needs are trust and responsibility for its programs.
Embates terrabanicus Prena 2005, sp. n.
Creators: name: Prena, Jens
Publisher: name: Zenodo
Year: 2005
Subjects: Biodiversity
Taxonomy
Animalia
Arthropoda
Insecta
Coleoptera
Curculionidae
Embates
Embates terrabanicus

description: 9. Embates terrabanicus Prena sp. n.
(Fig. 51–54, 251)
Holotype male (dissected), Costa Rica, labeled: “ Rancho Quemado, 200 m,/ Peninsula de Osa, Prov./ Puntarenas, Costa Rica / Dic 1992, F. Quesada / L­S 292500, 511000”, CRI000 822531 (INBC).
Paratypes 5 (all female), Costa Rica, labeled: same label as holotype, CRI000 822532 (INBC), CRI000 822536 (CMNC); “ Costa Rica, PUNTA.: P.N./ Corcovado, Est. Agujas, 8°/ 32' N 83° 25' W, 300 m,/ 15– 16.3.2000, leg. Prena ” (CWOB); same label except 19– 21.3.2000 (JPPC 2).
Description. Habitus: Fig. 51, total length 4.2–4.9 mm (m=4.6, n=6). Color: integument dark brown; basic vestiture rather dense, dark brown with few yellow scales; scales yellow in well­defined dorsolateral vitta between head and elytral apices running just proximad of preapical callus (Fig. 51); venter with yellow scales on prosternum and flank. Head: frontal fovea minute or absent, rostrum moderately thick, subcylindrical (Fig. 52), not costate dorsomedially, basolateral margin roundly edged, length of rostrum ♂ 1.33x, ♀♀ 1.25–1.31 x (m=1.28, n=5) pronotal length, length of ante­antennal portion ♂ 0.43x, ♀♀ 0.45–0.47 x (m=0.46, n=5) total rostral length, dorsal margin of antennal scrobe reaching rostral base before eye; length of funicular segments 1 and 2 subequal, club oblong ovate. Pronotum: length 0.80–0.82 x (m=0.81, n=6) maximum width, sides subparallel in basal third, then roundly narrowed and tubulate in front; disk densely punctate, intervals granulose. Elytra: length 1.40–1.45 x (m=1.43, n=6) width at humeri, width 1.38–1.44 x (m=1.42, n=6) maximum pronotal width, sides slightly converging in basal half, apices rounded conjointly, preapical callus weak, striae fine, punctures indistinct, interstriae flat, 7 (distally) and 9 subcostate. Legs: tibiae curved, ventral margin bisinuate, distally with cluster of brown hairs, tarsal claws arcuate and separate at base. Male: apex of aedeagus blunt, middle and anterolateral portion membranous (Fig. 53), body of aedeagus of moderate size, curved in lateral view, apodemes 2.0 x longer than body of aedeagus, flagellum thin, slightly shorter than apodemes, transition to narrowly curved base gradual, basal appendage elongate, projecting beyond base (Fig. 54).
 Plant association. Piper terrabanum (Prena 3).
Distribution. Costa Rica, Osa Peninsula (Fig. 251).
Specific epithet. The name is a Latin adjective derived from the name of the plant.
 Discussion. Embates terrabanicus is related closely to E. vestitus (Chevrolat) and E. claveri (Hustache). All three are notably stout species of the E. rufipes complex, a predominantly South American group with a membranous aedeagal apex.
description: Published as part of Prena, Jens, 2005, The Middle American species of Embates Chevrolat (Coleoptera: Curculionidae: Baridinae), pp. 1-151 in Zootaxa 1100 (1) on pages 1-151, DOI: 10.11646/zootaxa.1100.1.1, http://zenodo.org/record/5051728
Bewegte Landbilder als zeithistorische Quelle
Creators: name: Semanek, Brigitte
name: Schwarz-Gräber, Ulrich
name: Ribisch, Florian
name: Hufnagl, Almut
Publisher: name: Jahrbuch für Geschichte des ländlichen Raumes
Year: 2021

description: Jahrbuch für Geschichte des ländlichen Raumes, Bd. 17 (2020): Cities – Regions – Hinterlands: Metabolisms, Markets, and Mobilities Revisited
Gradient flow step-scaling function for SU(3) with ten fundamental flavors
Creators: name: Hasenfratz, Anna
name: Rebbi, Claudio
name: Witzel, Oliver
Publisher: name: arXiv
Year: 2020
Subjects: subject: High Energy Physics - Lattice (hep-lat)
subject: High Energy Physics - Phenomenology (hep-ph)
subject: FOS: Physical sciences

description: We calculate the step scaling function, the lattice analog of the renormalization group $β$-function, for an SU(3) gauge theory with ten fundamental flavors. We present a detailed analysis including the study of systematic effects of our extensive data set generated with ten dynamical flavors using the Symanzik gauge action and three times stout smeared Möbius domain wall fermions. Using up to $32^4$ volumes, we calculate renormalized couplings for different gradient flow schemes and determine the step-scaling $β$ function for a scale change $s=2$ on up to five different lattice volume pairs. In an accompanying paper we discuss that gradient flow can promote lattice dislocations to instanton-like objects, introducing nonperturbative lattice artifacts to the step scaling function. Motivated by the observation that Wilson flow sufficiently suppresses these artifacts, we choose Wilson flow with the Symanzik operator as our preferred analysis. We study systematic effects by calculating the step-scaling function based on alternative flows (Zeuthen or Symanzik), alternative operators (Wilson plaquette, clover), and also explore the effects of the perturbative tree-level improvement. Further we investigate the effects due to the finite value of $L_s$.
description: 20 pages, 14 figures, v2 version published in Phys. Rev. D
Unbiased Differential Size Evolution and the Inside-Out Growth of Galaxies in the Deep CANDELS GOODS Fields at $1 \leq z \leq 7$
Creators: name: Whitney, Amy
name: Conselice, Christopher J.
name: Bhatawdekar, Rachana
name: Duncan, Kenneth
Publisher: name: arXiv
Year: 2019
Subjects: subject: Astrophysics of Galaxies (astro-ph.GA)
subject: FOS: Physical sciences

description: We present a size analysis of a sample of $\sim$ 49,000 galaxies from the CANDELS GOODS North and South fields using redshift-independent relative surface brightness metrics to determine an unbiased measure of the differential size evolution of galaxies at $1 \leq z \leq 7$. We introduce a novel method of removing foreground objects from distant galaxy ($z > 3$) images that makes use of the Lyman-break at 912Å, in what we call `2-D Lyman-Break Imaging'. The images used are in the rest-frame optical at $z < 3$ and progressively bluer bands at $z > 3$. They are therefore subject to K-correction and cosmological dimming effects which are tested and corrected for. We separately consider a mass-selected sample (with masses in the range 10$^9$M$_{\odot}$$\leq$M$_*$$\leq$10$^{10.5}$M$_{\odot}$) and a number density selected sample (using a constant number density of $n = 1\times10^{-4}$Mpc$^{-3}$). Instead of utilising the commonly used, but potentially biased, effective radii for size measurements, we measure the redshift-independent Petrosian radius, defined by the parameter $η$, for each galaxy for three values of $η$ and use this as a proxy for size. The evolution of the measured radii can be described by a power-law of the form $R_{Petr} = α(1+z)^β$kpc where $β< 0$. We find that the outer radius increases more rapidly, suggesting that as a galaxy grows mass is added to its outer regions via an inside-out growth. This growth is stronger for the number density selected sample, with a growth rate of nearly three in the outer radii compared to the inner. We test and confirm these results using a series of image simulations.
description: 16 pages, 11 figures
Efficient Transformers for Visual Recognition
Creators: name: Pan, Zizheng
Publisher: name: Monash University
Year: 2024
Subjects: classificationCode: 460304
subject: Computer vision

description: Vision Transformer (ViT) is type of deep neural networks that adopts multi-head self-attention mechanisms. Benefiting from the capability of capturing global dependancies, recent ViTs have shown strong performance in many computer vision tasks like image classification and object detection. However, ViTs are expensive to train and infer due to the quadratic complexity of self-attention, especially for high-resolution tasks that typically result in high computational costs and carbon emissions. In this thesis, we focus on designing efficient ViTs through token merging, efficient architecture design and deployment strategies, aiming to enhance training and inference efficiency and promote GreenAI.
Thinging the Use Case Model
Creators: name: Al-Fedaghi, Sabah
Publisher: name: arXiv
Year: 2019
Subjects: subject: Software Engineering (cs.SE)
subject: FOS: Computer and information sciences

description: Use cases as textual visual modeling techniques have become a key construct and the foundation of the most popular de facto standard technique for performing software requirements analysis and specification. This paper describes use cases in terms of a recently proposed model, the thinging machine (TM) model. Such a link to TM strengthens the notion of use cases and clarifies related concepts. For example, the concept of events is utilized in an unconstrained way in use cases, and TM may contribute in this direction. Several selected use cases are remodeled using TM. This study provides many insights. For example, one result shows that use cases are an activation apparatus of mega-triggering (high-level events) wherein a group of submachines (processes) are actuated.
description: 12 pages, 20 figures
Analytical and Numerical Investigation of a Mechanically Stabilized Earth Wall on I-15
Creators: name: Budge, Aaron S.
Publisher: name: Utah State University
Year: 2004

description: This dissertation is the culmination of extensive research into the behavior of a 11 mechanically stabilized earth (MSE) wall at 1-15 and 3600 South in Salt Lake City, Utah. The wall is about 30 ft tall and is constructed on a compressible, soft clay foundation. Research on this project has included extensive instrumentation and monitoring of stresses and deformations in the wall and its foundation, a study of the effects of drilling and sampling method on disturbance of samples, and extensive laboratory testing to determine strength and deformation properties of soils at the site. The results of these portions of the project are summarized. All of this work has been used to develop and calibrate an analytical model of the MSE wall. This dissertation presents this analytical model.
The analytical model of this wall is a valuable and powerful tool to understand the behavior of tall MSE walls on compressible foundations. By using such a model, the effects of pore pressure dissipation during construction can be evaluated. This allows for accurate evaluation of the stability of the embankment during construction and long term for any construction sequence. The model can be used to evaluate soil reinforcement interaction and to evaluate different reinforcement configurations.
This research contains discussions of the soil model that was developed for Bonneville clay, a comparison between measured and calculated deformations in the wall foundation, the time-settlement behavior of the wall, soil-reinforcement interactions, and stability evaluations, as well as a comparison of traditional slope stability analysis results to the finite element results obtained from this model.
Matrix product operator representation of polynomial interactions
Creators: name: Wall, Michael L.
Publisher: name: arXiv
Year: 2020
Subjects: subject: Quantum Physics (quant-ph)
subject: FOS: Physical sciences

description: We provide an exact construction of interaction Hamiltonians on a one-dimensional lattice which grow as a polynomial multiplied by an exponential with the lattice site separation as a matrix product operator (MPO), a type of one-dimensional tensor network. We show that the bond dimension is $(k+3)$ for a polynomial of order $k$, independent of the system size and the number of particles. Our construction is manifestly translationally invariant, and so may be used in finite- or infinite-size variational matrix product state algorithms. Our results provide new insight into the correlation structure of many-body quantum operators, and may also be practical in simulations of many-body systems whose interactions are exponentially screened at large distances, but may have complex short-distance structure.
description: 16 pages
The Biodiversity Intactness Index (February 2020)
Creators: name: Purvis, Andy
Publisher: name: figshare
Year: 2020
Subjects: subject: Ecology
subject: FOS: Biological sciences
subject: 50202 Conservation and Biodiversity

description: Short flyer outlining the the Biodiversity Intactness Index as produced by the PREDICTS project. To explore the projections of BII displayed in this flyer in more detail, see here: https://adriana-de-palma.shinyapps.io/ssp_explore/. To see a more detailed explanation of the statistical methods, see here: https://adrianadepalma.github.io/BII_tutorial/bii_example.html
Hadronic Decays Involving Heavy Pentaquarks
Creators: name: He, Xiao-Gang
name: Li, Xue-Qian
Publisher: name: arXiv
Year: 2004
Subjects: subject: High Energy Physics - Phenomenology (hep-ph)
subject: High Energy Physics - Experiment (hep-ex)
subject: FOS: Physical sciences

description: Recently several experiments have reported evidences for pentaquark $Θ^+$. H1 experiment at HERA-B has also reported evidence for $Θ_c$. $Θ^+$ is interpreted as a bound state of an $\bar s$ with other four light quarks $udud$ which is a member of the anti-decuplet under flavor $SU(3)_f$. While $Θ_c$ is a state by replacing the $\bar s$ in $Θ^+$ by a $\bar c$. One can also form $Θ_b$ by replacing the $\bar s$ by a $\bar b$. The charmed and bottomed heavy pentaquarks form triplets and anti-sixtets under $SU(3)_f$. We study decay processes involving at least one heavy pentaquark using $SU(3)_f$ and estimate the decay widths for some decay modes. We find several relations for heavy pentaquarks decay into another heavy pentaquark and a $B (B^*)$ or a $D(D^*)$ which can be tested in the future. $B$ can decay through weak interaction to charmed heavy pentaquarks. We also study some $B$ decay modes with a heavy pebtaquark in the final states. Experiments at the current $B$ factories can provide important information about the heavy pentaquark properties.
description: RevTex 20 pages. Revised version. Discussions on the recent H1 data and new references added
¿Tienes al perfecto jefe comercial para la próxima década?
Creators: name: Alba, Jorge
Publisher: name: figshare
Year: 2020
Subjects: subject: 150301 Business Information Management (incl. Records, Knowledge and Information Management, and Intelligence)
subject: FOS: Economics and business
subject: 150302 Business Information Systems
subject: 150399 Business and Management not elsewhere classified
subject: 159999 Commerce, Management, Tourism and Services not elsewhere classified
subject: 150304 Entrepreneurship
subject: 150303 Corporate Governance and Stakeholder Engagement

description: Encontrar el perfecto jefe de equipo suena algo utópico, sobre todo porque en cada momento las empresas buscan unas cualidades que van cambiando. Para la nueva década que comienza parece ser que las más demandadas corresponden a las siguientes.
The Biggest Snowball Fight in Earth History: Stratigraphy, Facies Analysis, and Geochronology of the Pocatello Formation
Creators: name: Ellison, Matthew W.
Publisher: name: Utah State University
Year: 2021

description: The Snowball Earth Hypothesis details a time in Earth’s history (the Cryogenian period) where the entire planet was encapsulated by kilometer thick ice sheets for two, multi-million-year glaciations. The first, known as the Sturtian, lasted from 717 – 660 million years ago while the second, known as the Marinoan, lasted form approximately 650 – 635 million years ago. Snowball Earth was caused by a few processes that sort of built upon each other: Rodinia began splitting apart ~740 million years ago which allowed for increased rates of silicate weathering. High rates of silicate weathering resulted in CO2 drawdown which in turn caused the global temperature to drop. The gradual drop in temperature allowed for polar ice to advance and, once the ice reached a critical latitude, the earth experienced a runaway ice albedo effect – meaning ice advanced uncontrollably all the way to the equator – resulting in a completely ice-covered planet.
Evidence for Snowball Earth comes in the form of paleomagnetic data that show that Rodinia was rifting at this time, a global distribution and synchroneity of Snowball Earth deposits, carbon isotope ratios, and cap carbonates (a unique lithology present only in Snowball Earth deposits). In Pocatello, Idaho, geologists have identified deposits (the Pocatello Formation) that fall within the age range of Snowball Earth and that exhibit similar lithologic characteristics to other known Snowball Earth deposits. The goal of this study is to determine whether the Pocatello Formation was deposited during Snowball Earth, and if it is, which glaciation(s)/deglaciation(s) it was deposited during. To accomplish this goal, we conducted field work to characterize the different lithologies of the Pocatello Formation and then we used a radiometric dating technique called chemical abrasion – isotope dilution – thermal ionization mass-spectrometry to find out exactly how old the Pocatello Formaton is.
Our results show that the Pocatello Formation is host to Sturtian glacial deposits, Marinoan glacial deposits, and Marinoan deglacial deposits. These findings will allow for: the revision to local stratigraphy and age boundaries, correlation of the Pocatello Formation with other Snowball Earth deposits worldwide, and further insight into the Cryogenian period.
Normal-mode spectroscopy of a single bound atom-cavity system
Creators: name: Maunz, P.
name: Puppe, T.
name: Schuster, I.
name: Syassen, N.
name: Pinkse, P. W. H.
name: Rempe, G.
Publisher: name: arXiv
Year: 2004
Subjects: subject: Quantum Physics (quant-ph)
subject: FOS: Physical sciences

description: The energy-level structure of a single atom strongly coupled to the mode of a high-finesse optical cavity is investigated. The atom is stored in an intracavity dipole trap and cavity cooling is used to compensate for inevitable heating. Two well-resolved normal modes are observed both in the cavity transmission and the trap lifetime. The experiment is in good agreement with a Monte Carlo simulation, demonstrating our ability to localize the atom to within $λ/10$ at a cavity antinode.
description: 4 pages, 4 figures
Moderating Effects of School Ethnic Composition on the Associations Between Cultural Variables and Academic Outcomes Among Latinx Youth
Creators: name: Estrada, Juan
Publisher: name: Utah State University
Year: 2021

description: Cultural factors such as acculturative stress, discrimination and ethnic identity have been shown to relate to Latinx students’ academic outcomes, with the first two being risk factors, while the last one primarily plays a protective role. Factors that modify or change these relationships have been studied by both psychological and educational researchers, in efforts to inform interventions. One area of interest is school ethnic contexts, specifically school ethnic representation (number of same-ethnic peers) and school ethnic diversity (proportion of different ethnic groups in student body). This study investigated whether these two school ethnic variables changed or influenced the relationship between the cultural factors and the academic achievement of Latinx youth. Both representation and diversity modified the relationships between English Competency Pressure (ECP), a subscale of acculturative stress, and academic-self efficacy. Diversity also showed a significant interaction with ECP in predicting school belonging. Negative relationships between ECP and academic self-efficacy or school belonging only emerged for students in schools with very low ethnic diversity. In contrast, ECP was strongly negatively related to academic self-efficacy for students in schools with the highest ethnic representation. These findings begin to clarify the intricacies of how school context influences Latinx student’s academic performance based on cultural factors. It is important to understand these relationships in order to better formulate policy, curriculum, and teaching practices to serve all students.
Wertebasierte Produktions- und Konsumweisen im WTO-zentrierten Nahrungsregime
Creators: name: Plank, Christina
name: Hafner, Robert
name: Stotten, Rike
Publisher: name: Jahrbuch für Geschichte des ländlichen Raumes
Year: 2021

description: Jahrbuch für Geschichte des ländlichen Raumes, Bd. 17 (2020): Cities – Regions – Hinterlands: Metabolisms, Markets, and Mobilities Revisited
Factors contributing to anxiety among final year junior high school students in Ghana: implications for supporting mental well-being during basic education certificate examination
Creators: name: Achulo, Solomon
name: Kugbey, Nuworza
name: Amoako, Emmanuel Owusu
name: Babatunde, Abass
name: Azasu, Enoch Kordjo
Publisher: name: Springer Nature
Year: 2024

description: Introduction/problem Anxiety disorders are increasingly prevalent in sub-Saharan Africa (SSA). Limited data exist on factors contributing to anxiety, particularly among final year junior high school (JHS) students in Ghana preparing for the Basic Education Certificate Exam (BECE). Purpose This study aimed to investigate the factors influencing anxiety levels among final year JHS students in Ghana, focusing on hunger, parental support, sleep duration, co-occurring mental health concerns, gender, and other variables. Methods A sample of 394 final year JHS students in the Greater Accra Region of Ghana was surveyed using established measures for anxiety, sleep duration, parental support, hunger, substance use, and mental health concerns. Logistic regression analyses were conducted to explore the relationships between these variables and anxiety levels among students. Key findings The study revealed a high prevalence of anxiety among final year JHS students, with 71.4% exhibiting symptoms above the chronic anxiety cut-off point. Significant factors associated with anxiety included hunger, living with a single parent, and co-occurring mental health concerns. Age, gender, access to school counseling, school type, and substance use showed no significant associations with anxiety. Conclusions/implications The findings underscore the need for a comprehensive approach to addressing anxiety among final year JHS students, considering socio-economic factors, family dynamics, and mental health support. Stakeholders can use these insights to develop targeted interventions that promote mental well-being and academic success. Recommendations Enhancing access to mental health services, addressing socio-economic disparities, providing support for students from single-parent households, and integrating mental health education into school curricula are recommended.
Deformation of crosslinked semiflexible polymer networks
Creators: name: Head, D. A.
name: Levine, A. J.
name: MacKintosh, F. C.
Publisher: name: arXiv
Year: 2003
Subjects: subject: Disordered Systems and Neural Networks (cond-mat.dis-nn)
subject: Biomolecules (q-bio.BM)
subject: FOS: Physical sciences
subject: FOS: Biological sciences

description: Networks of filamentous proteins play a crucial role in cell mechanics. These cytoskeletal networks, together with various crosslinking and other associated proteins largely determine the (visco)elastic response of cells. In this letter we study a model system of crosslinked, stiff filaments in order to explore the connection between the microstructure under strain and the macroscopic response of cytoskeletal networks. We find two distinct regimes as a function primarily of crosslink density and filament rigidity: one characterized by affine deformation and one by non-affine deformation. We characterize the crossover between these two.
description: Typos fixed and some technical details clarified. To appear in Phys. Rev. Lett
Η Χριστοκεντρική ωρίμανση και τελειότητα του ανθρώπου (Εφ. 4,13): Η Προσέγγιση της Ποιμαντικής Θεολογίας του Αποστόλου Παύλου και της Σύγχρονης Συμβουλευτικής Ψυχολογίας
Creators: name: Kasir, Souzan Ε.
Publisher: name: Aristotle University of Thessaloniki
Year: 2021
Subjects: Τελειότητα
Θεραπεία
Ωριμότητα
Λύτρωση
Perfection
Therapy
Maturity
Salvation

description: Ο σκοπός της διατριβής ήταν να μελετήσουμε πως φτάνει ο άνθρωπος στη Χριστοκεντρική ωρίμανση και τελειότητα μέσω της Ορθόδοξης θεραπείας και της ψυχοθεραπείας. Μελετήσαμε την προσέγγιση μεταξύ της Ποιμαντικής Θεολογίας του αποστόλου Παύλου και της Ψυχοθεραπείας. Ο απόστολος Παύλος γράφει στις επιστολές του για το πλήρωμα του Χριστού και το δικό μας πλήρωμα και τελειότητα, αναφέραμε ποια είναι η ποιμαντική θεολογία του, και πώς μέσα στην διδασκαλία του βοηθιέται η ψυχή ου ανθρώπου και λυτρώνεται. Έπειτα αναφέραμε συγκεκριμένες θεωρίες της ψυχοθεραπείας, και μελετήσαμε, πιο πολύ, δυο θεωρίες την προσωποκεντρική προσέγγιση του Καρλ Ρότζερ και την Λογοθεραπεία του Βίκτωρ Φράνκλ. Σε άλλο κεφάλαιο αναφέραμε την ποιμαντική συμβουλευτική και την Χριστιανική ορθόδοξη Συμβουλευτική. Στο τέλος παρουσιάσαμε τις διαφορές και τις ομοιότητες μεταξύ τους. Κατακλείνοντας την εργασία με αναφορά στην χριστιανική τελειότητα ως κορωνίδα της χριστιανικής συμβουλευτικής, με βάση την διδασκαλία του Μεγάλου Βασιλείου περί αυτογνωσίας, και το δοκίμιο του αγίου Γρηγορίου Νύσσης περί τελειότητος προς τον ασκητή Ολύμπιο, όπου προτείνεται ως υπόδειγμα ζωής ο Χριστός.
description: The aim of the present thesis was to study how man reaches to Christ-centered maturity and perfection through Orthodox therapy and psychotherapy. We studied the approach between Pastoral Theology of the Apostle Paul and Psychotherapy. The apostle Paul writes in his letters about the fullness of Christ and our fullness and perfection, we mentioned how his pastoral theology and his teaching helped the human to be redeemed. Then we mentioned specific theories of psychotherapy, and studied, moreover, two theories, the person-centered approach of Carl Rogers and the Logotherapy of Victor Frankl. In another chapter we mentioned the pastoral counseling and Christian Orthodox Counseling. In the end we presented the differences and similarities between them. Concluding this thesis with a reference to Christian perfection as the crown of Christian counseling, based on the teaching of the Great Saint Basil on self-knowledge, and the essay of Saint Gregory of Nyssa on perfection to the ascetic Olympus, where Christ is proposed as a model of life.
Excitation of the collective states in a three-qubit system
Creators: name: Greenberg, Ya. S.
name: Shtygashev, A. A.
Publisher: name: arXiv
Year: 2020
Subjects: subject: Mesoscale and Nanoscale Physics (cond-mat.mes-hall)
subject: Quantum Physics (quant-ph)
subject: FOS: Physical sciences

description: In the present paper, we have proposed the experimentally achievable method for the characterization of the collective states of qubits in a linear chain. We study temporal dynamics of absorption of a single-photon pulse by three interacting qubits embedded in a one-dimensional waveguide. Numerical simulations were performed for a Gaussian-shaped pulse with different frequency detunings and interaction parameters between qubits. The dynamic behavior of the excitation probability for each qubit is investigated. It was shown that the maximum probability amplitudes of excitation of qubits are reached when the frequency of external excitation coincides with the frequency of excitation of the a corresponding eigenstate of the system. In this case, the the magnitude of the probability amplitude of each qubit in the chain unambiguously correlates with the contribution of this qubit to the corresponding collective state of the system, and the decay of these amplitudes are determined by the resonance width arising from the interaction of the qubit with the photon field of the waveguide. Therefore, we show that the pulsed harmonic probe can be used for the characterization of the energies, widths, and the wavefunctions of the collective states in a one-dimensional qubit chain.
description: 11 pages, 12 figures
Polycystic ovary syndrome in adults : a literature review and clinical practice guideline for the primary care nurse practitioner
Creators: name: Meidinger, Lindsey
Publisher: name: The University of British Columbia
Year: 2016

description: Polycystic ovary syndrome (PCOS) is a complex, multifaceted syndrome with multiple health implications and long-term health risks (Fauser et al., 2012). Women with PCOS require management and guidance from their primary care NP in collaboration with multiple specialists. The heterogeneity of the syndrome makes diagnosis, symptomatic treatment, and long-term management complex and individualized (Fauser et al., 2012). Long-term complications of PCOS include increased risk for insulin resistance (IR), cardiovascular disease (CVD), endometrial cancer, obesity, depression and anxiety, infertility, and various dermatological manifestations (Fauser et al., 2012). Nurse Practitioners (NP) are in a unique position, as primary care providers, to co-manage these women with various specialists. Currently in Canada, however, there are no primary care guidelines for the diagnosis and management of PCOS. This literature review was developed for the purpose of finding supporting evidence for the creation of a clinical practice guideline to assist NPs in the diagnosis and long-term management of adult women with PCOS.
C-field cosmological model in higher dimensions
Creators: name: Chatterjee, S.
name: Banerjee, A.
Publisher: name: arXiv
Year: 2003
Subjects: subject: General Relativity and Quantum Cosmology (gr-qc)
subject: FOS: Physical sciences

description: Hoyle and Narlikar's $C$-field cosmology is extended in the framework of higher dimensional spacetime and a class of exact solutions is obtained. Adjusting the arbitrary constants of integration one can show that our model is amenable to the desirable property of dimensional reduction so that the universe ends up in an effective 4D one.Further with matter creation from the $C$-field the mass density steadies with time and the usual bigbang singularity is avoided. An alternative mechanism is also suggested which seems to provide matter creation in the 4D spacetime although total matter in the 5D world remains conserved. Quintessence phenomenon and energy conditions are also discussed and it is found that in line with the physical requirements our model admits a solution with a decelerating phase in the early era followed by an accelerated expansion later. Moreover, as the contribution from the $C$-field is made negligible a class of our solutions reduces to the previously known higher dimensional models in the framework of Einstein's theory.
description: 9 pages, latex
The test-negative design with additional population controls: a practical approach to rapidly obtain information on the causes of the SARS-CoV-2 epidemic
Creators: name: Vandenbroucke, Jan P
name: Brickley, Elizabeth B
name: Vandenbroucke-Grauls, Christina M J E
name: Pearce, Neil
Publisher: name: arXiv
Year: 2020
Subjects: subject: Populations and Evolution (q-bio.PE)
subject: Applications (stat.AP)
subject: FOS: Biological sciences
subject: FOS: Computer and information sciences

description: Testing of symptomatic persons for infection with SARS-CoV-2 is occurring worldwide. We propose two types of case-control studies that can be carried out jointly in test-settings for symptomatic persons. The first, the test-negative case-control design (TND) is the easiest to implement; it only demands collecting information about potential risk factors for COVID-19 from the tested symptomatic persons. The second, standard case-control studies with population controls, requires the collection of data on one or more population controls for each person who is tested in the test facilities, so that test-positives and test-negatives can each be compared with population controls. The TND will detect differences in risk factors between symptomatic persons who have COVID-19 (test-positives) and those who have other respiratory infections (test-negatives). However, risk factors with effect sizes of equal magnitude for both COVID-19 and other respiratory infections will not be identified by the TND. Therefore, we discuss how to add population controls to compare with the test-positives and the test-negatives, yielding two additional case-control studies. We describe two options for population control groups: one composed of accompanying persons to the test facilities, the other drawn from existing country-wide health care databases. We also describe other possibilities for population controls. Combining the TND with population controls yields a triangulation approach that distinguishes between exposures that are risk factors for both COVID-19 and other respiratory infections, and exposures that are risk factors for just COVID-19. This combined design can be applied to future epidemics, but also to study causes of non-epidemic disease.
description: 13 pages, 1 figure, Appendices 9 pages. PMID: 32841988
The Effect of Distortions in Relative Prices on Corn Productivity and Exports: A Cross-Country Study
Creators: name: Lyons, David C.
name: Thompson, Robert L.
name: Lyons, David C.
name: Thompson, Robert L.
Publisher: name: Unknown
Year: 1981
Subjects: Crop Production/Industries

description: This paper tests the hypothesis tliat a significant part of the observed dif­ferences in com yields among countries can be explained by differences in the corn-nitrogen price ratio. Evidence is provided that the farm level price of corn relative to the price of nitrogen fertilizer varies greatly among countires. The observed large differences reflect the price and international trade policies that exist in the respective markets for com and nitrogen fertilizer. Pooled data from 14 of the largest corn producing countries for 13 years show that the corn-nitrogen price ratio, as well as physical factors and technology, account for a significant part of the observed corn yield dif­ferences among countries. This provides evidence that policies which distort corn and fertilizer prices have a significant effect on com yields and in turn on the net trade positions of the various countries.
An Analysis on the Change of Consumer's Fruit Purchasing Behavior
Creators: name: Kim, Kyungphil
name: Kim, Kyungphil
Publisher: name: Unknown
Year: 2004
Subjects: subject: Consumer/Household Economics
subject: fruit
subject: consumer behavior
subject: strategies of production and shipping

description: The purpose of this study is grasping the changes of household behavior on fruit purchasing and presenting an implication with the direction for production and shipping in Korea. The items on this study are apple, pear, citrus, sweet persimmon, orange imported, and grape imported. This analysis was practiced by comparing the results of consumer's survey with those of pre-conducted surveys. The survey shows that the proportion of buying fruits at big discount stores is largely increased and consumers have a top priority to sweet-level quality over the price. As a result, it is forecasted that the future demand for fruits will be decided by quality such as sweet-level, freshness, etc. To raise the demand of domestic-produced fruits and improve competitiveness to stand comparison with fruits imported, it is need to be considered improving of quality of sweet-level and changing of commodity shipping systems to the consumer-preferred.
Market Share Analysis of Major Fruit-Vegetable Variety
Creators: name: Han, Sukho
name: Han, Sukho
Publisher: name: Unknown
Year: 2004
Subjects: subject: Marketing
subject: FOS: Economics and business
subject: Fruit-Vegetables
subject: market share

description: Korean agricultural outlook is roughly divided into two types in terms of outlook period. One is short term outlook which focuses on agricultural products which have high price fluctuations such as vegetables, fruits, fruit-vegetables, livestocks, and this short term outlook is published each month by form of outlook monthly paper except January & February. The other is mid or long term outlook which emphasizes on future demand & supply situations in detail such as production, consumption, import & export, income by scenario based on the world agricultural negotiation which is published each year at once by form of outlook annual paper on February. Especially, In long term outlook, Agricultural Outlook & Information Center had established and used KREI-COMO until 2002. Agricultural Outlook Center's model was modified to forecast future economic index and evaluate agricultural strategies in 2003. This new simulation model is KREI-COSMO (Korea Rural Economic Institute-Commodity Simulation Model). In spite of establishing simulation model, KREI-COSMO, AOIC could not predict future varieties economic index each item in Fruit-vegetable outlook due to restricting data which is needed by making model. This paper aims to analyze the market share of the main fruit-vegetable varieties and predict indirectly future supply situation each variety by using Markov's probability model and Nevo's discrete choice model.