cometadata/datacite-rtg-text-other-reclassification-records huggingface dataset:
Valley-selective Floquet Chern Flat Bands in Twisted Multilayer Graphene
Creators: name: Lu, Ming
name: Zeng, Jiang
name: Liu, Haiwen
name: Gao, Jin-Hua
name: Xie, X. C.
Publisher: name: arXiv
Year: 2020
Subjects: subject: Mesoscale and Nanoscale Physics (cond-mat.mes-hall)
subject: FOS: Physical sciences

description: We show that Floquet engineering with circularly polarized light (CPL) can selectively split the valley degeneracy of a twisted multilayer graphene (TMG), and thus generate a controlled valley-polarized Floquet Chern flat band with tunable large Chern number. It offers a feasible optical way to manipulate the valley degree of freedom in moiré flat bands, and hence opens new opportunities to study the valleytronics of morié flat band systems. We thus expect that many of the valley-related properties of TMG, e.g. orbital ferromagnetism, can be switched by CPL with proper doping. We reveal a Chern number hierarchy rule for the Floquet flat bands in a generic (M+N)-layer TMG. We also illustrate that the CPL effects on TMG strongly rely on the stacking chirality, which is an unique feature of TMG. All these phenomena could be tested in the twisted double bilayer graphene systems, which is the simplest example of TMG and has already been realized in experiment.
Additional file 1 of Exact solving and sensitivity analysis of stochastic continuous time Boolean models
Creators: name: Koltai, Mihály
name: Noel, Vincent
name: Zinovyev, Andrei
name: Calzone, Laurence
name: Barillot, Emmanuel
Publisher: name: figshare
Year: 2020
Subjects: subject: Statistics
subject: FOS: Mathematics

description: Additional file 1 Supplementary Information containing details of the analyzed biological models, sensitivity analysis and parameter fitting.
Data from: The twenty amino acids are identified by unique numbers assigned to the uracil, cytosine, adenine, and guanine found in the three base positions of the sixty-four messenger RNA genetic codons
Creators: name: Bayles, Brenda K. Krkosska
name: Heckert, Charles M.
Publisher: name: Zenodo
Year: 2024
Subjects: subject: Ribosomes
subject: Protein translation
subject: Bioinformatics
subject: FOS: Computer and information sciences
subject: Uracils
subject: Cytosine
subject: Guanine
subject: Adenine
subject: Amino acids
subject: Messenger RNA
subject: Genomics
subject: Biological databases
subject: Biological fluid mechanics
subject: Genetic code

description: A codon's three bases consist of any combination of uracil, cytosine, adenine, or guanine and these encode the twenty amino acids. When the codon's first two bases are given specific values, and those values are multiplied, then the third base of the codon is used during translation only when the product is greater than three. Here we show that those values plus more variables within the ribosomal decoding site results in specific flow values for each of the twenty amino acid groups. These results are demonstrated in a flow chart showing the unidirectional flow which is expected during the translation process. All twenty amino acids can be represented by numbers that describe their relationship to each other and to the decoding site. We anticipate our findings will increase discussion about using a number system to better understand the translation process.
description: There are sixty-one codons that are read by the ribosome and these encode the twenty amino acids. Our dataset assigns numbers to each of the 61 codons.  These numbers are calculated by assigning numerical values to the uracil, guanine, adenine, and cytosine that comprise mRNA during translation. Values are also assigned to the site within the ribosome that reads these codons. Twenty values result and they break the sixty-one codons into their respective twenty protein classes. For example, there are six codons that encode for serine and the value chart shows all six have the same value of 9.1, which is unique to serine and not found representing any of the other nineteen amino acid groups. Flow charts are used to show these values calculated in a unidirectional flow as is expected during translation.
A Finite Population Destroys a Traveling Wave in Spatial Replicator Dynamics
Creators: name: Griffin, Christopher
name: Mummah, Riley
name: deForest, Russ
Publisher: name: arXiv
Year: 2020
Subjects: subject: Populations and Evolution (q-bio.PE)
subject: Computer Science and Game Theory (cs.GT)
subject: Analysis of PDEs (math.AP)
subject: Pattern Formation and Solitons (nlin.PS)
subject: FOS: Biological sciences
subject: FOS: Computer and information sciences
subject: FOS: Mathematics
subject: FOS: Physical sciences

description: We derive both the finite and infinite population spatial replicator dynamics as the fluid limit of a stochastic cellular automaton. The infinite population spatial replicator is identical to the model used by Vickers and our derivation justifies the addition of a diffusion to the replicator. The finite population form generalizes the results by Durett and Levin on finite spatial replicator games. We study the differences in the two equations as they pertain to a one-dimensional rock-paper-scissors game.
description: 17 pages, 7 figures
A VLT spectroscopic survey of RX J0152.7-1357, a forming cluster of galaxies at z=0.837
Creators: name: Demarco, R.
name: Rosati, P.
name: Lidman, C.
name: Homeier, N. L.
name: Scannapieco, E.
name: Benitez, N.
name: Mainieri, V.
name: Nonino, M.
name: Girardi, M.
name: Stanford, S. A.
name: Tozzi, P.
name: Borgani, S.
name: Silk, J.
name: Squires, G.
name: Broadhurst, T. J.
Publisher: name: arXiv
Year: 2004
Subjects: subject: Astrophysics (astro-ph)
subject: FOS: Physical sciences

description: We present the results of an extensive spectroscopic survey of RX J0152.7-1357, one of the most massive distant clusters of galaxies known. Multi-object spectroscopy, carried out with FORS1 and FORS2 on the ESO Very Large Telescope (VLT), has allowed us to measure more than 200 redshifts in the cluster field and to confirm 102 galaxies as cluster members. The mean redshift of the cluster is $z=0.837 \pm 0.001$ and we estimate the velocity dispersion of the overall cluster galaxy distribution to be $\sim 1600 \mathrm{km \ s^{-1}}$. The distribution of cluster members is clearly irregular, with two main clumps that follow the X-ray cluster emission mapped by Chandra. A third clump of galaxies to the east of the central structure and at the cluster redshift has also been identified. The two main clumps have velocity dispersions of $\sim919$ and $\sim737 \mathrm{km s^{-1}}$ respectively, and the peculiar velocity of the two clumps suggests that they will merge into a single more massive cluster. A segregation in the star formation activity of the member galaxies is observed. All star forming galaxies are located outside the high-density peaks, which are populated only by passive galaxies. A population of red galaxies (belonging to the cluster red sequence) with clear post-starburst spectral features and [OII] ($λ$3727) emission lines is observed in the outskirts of the cluster. Two AGNs, which were previously confused with the diffuse X-ray emission from the intracluster medium in ROSAT and BeppoSAX observations, are found to be cluster members.
description: 16 pages. 13 figures. Accepted for publication in Astronomy & Astrophysics. Tables 4 and 5 available in printed version. Corrected typos and missing references
Additional file 1 of Clinical experience of whole-body computed tomography as the initial evaluation tool after extracorporeal cardiopulmonary resuscitation in patients of out-of-hospital cardiac arrest
Creators: name: Yang, Kelvin Jeason
name: Chih-Hsien Wang
name: Huang, Yu-Cheng
name: Li-Jung Tseng
name: Yih-Sharng Chen
name: Yu, Hsi-Yu
Publisher: name: figshare
Year: 2020
Subjects: subject: Medicine
subject: Cell Biology
subject: Molecular Biology
subject: Neuroscience
subject: Physiology
subject: FOS: Biological sciences
subject: Cancer
subject: Cardiology

description: Additional file 1. CT Protocol for Patients on Veno-arterial Extracorporeal Membrane.
title: Comentarios del CENTRO DE PENSAMIENTO MEDICAMENTOS INFORMACIÓN Y PODER Al borrador de resolución sobre compra centralizada de medicamentos para tratamientos de enfermedades huérfanas
title: Comentarios a resolución compra medicamentos enfermedades raras
titleType: Other
Creators: name: Centro de Pensamiento Medicamentos, Información y Poder
Publisher: name: Zenodo
Year: 2025

description: Comentarios del Centro de Pensamiento Medicamentos, Información y Poder al borrador de resolución sobre compra centralizada de medicamentos para enfermedades huérfanas es un documento que presenta un análisis crítico y propositivo sobre una iniciativa del Ministerio de Salud de Colombia. El Centro de Pensamiento, vinculado a la Universidad Nacional de Colombia, celebra la propuesta de compra centralizada como una estrategia prometedora para reducir los precios de medicamentos de alto impacto y mejorar el acceso a tratamientos necesarios para pacientes con enfermedades huérfanas.

A lo largo del documento, se argumenta que, aunque la resolución es un paso positivo, la sola expedición de la norma no garantiza por sí sola soluciones efectivas al problema del acceso. Se enfatiza la necesidad de desarrollar un plan concreto que incluya un análisis de mercado, la priorización de medicamentos, y criterios claros para el seguimiento y evaluación de resultados. Además, se sugiere fortalecer las capacidades locales para llevar a cabo la negociación y compra, en lugar de depender completamente de mecanismos internacionales como el Fondo Estratégico de la OPS.

El documento también plantea la importancia de establecer mecanismos claros de financiamiento y un diseño institucional robusto que asegure la transparencia y eficacia del proceso de compra centralizada. Se menciona la potencial creación de contratos a largo plazo que favorezcan la producción local de medicamentos, lo que contribuiría tanto a la reducción de costos como a la soberanía sanitaria del país.

En resumen, el documento aboga por una implementación efectiva y bien estructurada de la compra centralizada de medicamentos para enfermedades huérfanas, con el fin de garantizar un acceso adecuado a tratamientos y mejorar la salud pública en Colombia.
Amplitude Mode in Quantum Magnets via Dimensional Crossover
Creators: name: Zhou, Chengkang
name: Yan, Zheng
name: Wu, Han-Qing
name: Sun, Kai
name: Starykh, Oleg A.
name: Meng, Zi Yang
Publisher: name: arXiv
Year: 2020
Subjects: subject: Strongly Correlated Electrons (cond-mat.str-el)
subject: Statistical Mechanics (cond-mat.stat-mech)
subject: FOS: Physical sciences

description: We investigate the amplitude (Higgs) mode associated with longitudinal fluctuations of the order parameter at the continuous spontaneous symmetry breaking phase transition. In quantum magnets, due to the fast decay of the amplitude mode into low-energy Goldstone excitations, direct observation of this mode represents a challenging task. By focusing on a quasi-one-dimensional geometry, we circumvent the difficulty and investigate the amplitude mode in a system of weakly coupled spin chains with the help of quantum Monte Carlo simulations, stochastic analytic continuation, and a chain-mean field approach combined with a mapping to the field-theoretic sine-Gordon model. The amplitude mode is observed to emerge in the longitudinal spin susceptibility in the presence of a weak symmetry-breaking staggered field. A conventional measure of the amplitude mode in higher dimensions, the singlet bond mode, is found to appear at a lower than the amplitude mode frequency. We identify these two excitations with the second (first) breather of the sine-Gordon theory, correspondingly. In contrast to higher-dimensional systems, the amplitude and bond order fluctuations are found to carry significant spectral weight in the quasi-1D limit.
description: 16 pages and 8 figures
Bayesian evidence as a tool for comparing datasets
Creators: name: Marshall, Phil
name: Rajguru, Nutan
name: Slosar, Anze
Publisher: name: arXiv
Year: 2004
Subjects: subject: Astrophysics (astro-ph)
subject: FOS: Physical sciences

description: We introduce a new conservative test for quantifying the consistency of two or more datasets. The test is based on the Bayesian answer to the question, ``How much more probable is it that all my data were generated from the same model system than if each dataset were generated from an independent set of model parameters?''. We make explicit the connection between evidence ratios and the differences in peak chi-squared values, the latter of which are more widely used and more cheaply calculated. Calculating evidence ratios for three cosmological datasets (recent CMB data (WMAP, ACBAR, CBI, VSA), SDSS and the most recent SNe Type 1A data) we find that concordance is favoured and the tightening of constraints on cosmological parameters is indeed justified.
description: 4 pages, accepted by Phys. Rev. D
Household Level Welfare Effect of Organic Milk Introduction
Creators: name: Choi, Hee Jung
name: Wohlgenant, Michael K.
name: Zheng, Xiaoyong
name: Choi, Hee Jung
name: Wohlgenant, Michael K.
name: Zheng, Xiaoyong
Publisher: name: Unknown
Year: 2011
Subjects: Agribusiness
Consumer/Household Economics
Demand and Price Analysis

description: This study analyzes the factors that determine the demand for milk products and the consumer benefits from organic milk introduction. Estimating a structural model, the welfare effect is decomposed into two parts: the effect of having an additional product and the effect from the price changes in existing products due to the enhanced competition. In order to take heterogeneous tastes for different product characteristics into account, the unit of analysis is defined at the Universal Product Code (UPC) level and the demand is estimated for each household. The estimates from mixed logit demand approach indicate that households with younger head, higher income or higher education value more for the organic attribute. The distribution of estimated variety effect shows similar implications as the parameter estimates. The compensating variation and price effects indicate that the overall benefits take about 8 percent of the current expenditure and half of it is from increased competition in the market.
Capillary flow in an evaporating sessile drop
Creators: name: Tarasevich, Yuri Yu.
Publisher: name: arXiv
Year: 2004
Subjects: subject: Fluid Dynamics (physics.flu-dyn)
subject: FOS: Physical sciences

description: An analytical expression of velocity potential inside an evaporating sessile drop with pinned contact line is found.
description: 3 pages, 1 figure, RevTeX, sumitted to PRE
Magnetic phase transitions in two-dimensional two-valley semiconductors with in-plane magnetic field
Creators: name: Miserev, Dmitry
name: Klinovaja, Jelena
name: Loss, Daniel
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: A two-dimensional electron gas (2DEG) in two-valley semiconductors has two discrete degrees of freedom given by the spin and valley quantum numbers. We analyze the zero-temperature magnetic instabilities of two-valley semiconductors with SOI, in-plane magnetic field, and electron-electron interaction. The interplay of an applied in-plane magnetic field and the SOI results in non-collinear spin quantization in different valleys. Together with the exchange intervalley interaction this results in a rich phase diagram containing four non-trivial magnetic phases. The negative non-analytic cubic correction to the free energy, which is always present in an interacting 2DEG, is responsible for first order phase transitions. Here, we show that non-zero ground state values of the order parameters can cut this cubic non-analyticity and drive certain magnetic phase transitions second order. We also find two tri-critical points at zero temperature which together with the line of second order phase transitions constitute the quantum critical sector of the phase diagram. The phase transitions can be tuned externally by electrostatic gates or by the in-plane magnetic field.
The Muon System of the Run II D0 Detector
Creators: name: The D0 Muon Group
name: Abazov, V. M.
Publisher: name: arXiv
Year: 2005
Subjects: subject: Instrumentation and Detectors (physics.ins-det)
subject: FOS: Physical sciences

description: We describe the design, construction and performance of the upgraded DO muon system for Run II of the Fermilab Tevatron collider. Significant improvements have been made to the major subsystems of the DO muon detector: trigger scintillation counters, tracking detectors, and electronics. The Run II central muon detector has a new scintillation counter system inside the iron toroid and an improved scintillation counter system outside the iron toroid. In the forward region, new scintillation counter and tracking systems have been installed. Extensive shielding has been added in the forward region. A large fraction of the muon system electronics is also new.
description: 42 pages, 26 figures. Submitted to NIM
Silenced debate : the centralized nature of Chrétien foreign policy
Creators: name: Gass, Philip Robert
Publisher: name: University of British Columbia
Year: 2009

description: This thesis applies the 'government from the centre' thesis, as put forth by Donald Savoie in his book Governing from the Centre: The Concentration of Power in Canadian Politics, to the creation of foreign policy during the Chretien government. Savoie argues that the centre of Canadian government, meaning the Prime Minister and his advisors, dominated government policy and have forced other bodies, formerly involved in policy creation, into an advisory role. The thesis starts with an examination of the central theory as well as the views of its opponents; followed by a brief history of the department and its relation to the centre of government over the years. This is followed in chapters two and three by a study of Chretien himself as well as an examination of other actors in the foreign policy process. By determining the roles of each individual, and how much power each carried to formulate and initiate policy, the 'government from the centre' model is tested. Finally, the international landmine ban created during the late 1990's is used as a case study to show exactly how the centre dominated foreign policy creation when Chretien was Prime Minister. This case initially suggests that the Foreign Affairs Minister is the dominant player in foreign policy creation. Upon further study however, it is determined that the centre controlled the process. 'Governing from the centre' is alive and well in Canadian politics, and is the rule rather than the exception in foreign policy.
The foraging economics of honey bees in almonds
Creators: name: Champetier, Antoine
name: Champetier, Antoine
Publisher: name: Unknown
Year: 2011
Subjects: subject: Crop Production/Industries
subject: Environmental Economics and Policy
subject: Livestock Production/Industries
subject: pollination economics
subject: honey bee foraging
subject: bioeconomics

description: We develop a model of honey bee foraging behavior that can be used to simulate crop yields as functions of honey bee densities. These yield functions help us understand the economic behavior of growers who rely on bees for pollination. One important simulation result for the case of almonds is that the production function facing growers is close to one of fixed proportion in pollination input. Accordingly, the modeling of the foraging behavior of bees provides an explanation for the observed lack of variation in pollinator use and shows how the behavior of bees and growers are connected.
PEDAGOGIKA TARIHI VA NAZARIYALARI
Creators: name: Qurbonova, G.
Publisher: name: Zenodo
Year: 2024

description: Pedagogika (yun. paidagogs) — tarbiya, taʼlim hamda maʼlumot berishning nazariy va amaliy jihatlarini oʻrganuvchi fanlar majmuasi. Ped. institutlari va ayrim boshqa oʻquv yurtlarida mutaxassislik dasturi asosida oʻrganiladigan oʻquv predmeti ham pedagog deb yuritiladi. Pedagogika fan sifatida bola tarbiyasining nazariy asoslari bilan shugʻullangan. Zamonaviy pedagog bolalar bilan birgalikda kattalarning ham oʻquv-tarbiyaviy, madaniy hamda maʼnaviy-maʼrifiy tarbiyasi bilan shugullanishni koʻzda tutadi. Oʻzbekiston Respublikasida Pedagoglarga barkamol shaxs maʼnaviyatini shakllantirishning asosiy vositasi sifatida yondashiladi.
Time-travelling billiard-ball clocks: a quantum model
Creators: name: Bishop, Lachlan G.
name: Costa, Fabio
name: Ralph, Timothy C.
Publisher: name: arXiv
Year: 2020
Subjects: subject: Quantum Physics (quant-ph)
subject: FOS: Physical sciences

description: General relativity predicts the existence of closed timelike curves (CTCs), along which an object could travel to its own past. A consequence of CTCs is the failure of determinism, even for classical systems: one initial condition can result in multiple evolutions. Here we introduce a new quantum formulation of a classic example, where a billiard ball can travel along two possible trajectories: one unperturbed and one, along a CTC, where it collides with its past self. Our model includes a vacuum state, allowing the ball to be present or absent on each trajectory, and a clock, which provides an operational way to distinguish the trajectories. We apply the two foremost quantum theories of CTCs to our model: Deutsch's model (D-CTCs) and postselected teleportation (P-CTCs). We find that D-CTCs reproduce the classical solution multiplicity in the form of a mixed state, while P-CTCs predict an equal superposition of the two trajectories, supporting a conjecture by Friedman et al. [Phys. Rev. D 42, 1915 (1990)].
description: 15 pages, 8 figures
The Impacts of Change in Local Industrial Composition on Off-Farm Labor Supply
Creators: name: Brown, Jason P.
name: Brown, Jason P.
Publisher: name: Unknown
Year: 2011
Subjects: subject: Community/Rural/Urban Development
subject: Labor and Human Capital
subject: farm household
subject: labor supply
subject: bivariate logit

description: Most U.S. farm households have either the operator or spouse working off-farm for wages and salaries or proprietorships. Additionally, off-farm income continues to grow as a share of total household income. Little is known about how changes in local industrial composition impact off-farm labor decisions. Using a household utility maximization framework, this analysis employs a two-stage process to 1) predict joint off-farm labor participation of operators and spouses, and 2) measure the impact of farm and household characteristics, and changes in county-level industry on levels of off-farm labor supply. Results show that labor participation decisions are jointly determined. Human capital is among the most significant individual characteristics impacting labor supply. The most important factors are the industrial sector of the off-farm job, and whether that sector is growing or in decline. Growth in retail trade and service employment is associated with increases in labor supply for the operator and spouse.
Is the Broad-Line Region Clumped or Smooth? Constraints from the H alpha Profile in NGC 4395, the Least Luminous Seyfert 1 Galaxy
Creators: name: Laor, Ari
name: Barth, Aaron J.
name: Ho, Luis C.
name: Filippenko, Alexei V.
Publisher: name: arXiv
Year: 2005
Subjects: subject: Astrophysics (astro-ph)
subject: FOS: Physical sciences

description: The origin and configuration of the gas which emits broad lines in Type I active galactic nuclei is not established yet. The lack of small-scale structure in the broad emission-line profiles is consistent with a smooth gas flow, or a clumped flow with many small clouds. An attractive possibility for the origin of many small clouds is the atmospheres of bloated stars, an origin which also provides a natural mechanism for the cloud confinement. Earlier studies of the broad-line profiles have already put strong lower limits on the minimum number of such stars, but these limits are sensitive to the assumed width of the lines produced by each cloud. Here we revisit this problem using high-resolution Keck spectra of the H alpha line in NGC 4395, which has the smallest known broad-line region (~10^14 cm). Only a handful of the required bloated stars (each having r~10^14 cm) could fit into the broad-line region of NGC 4395, yet the observed smoothness of the H alpha line implies a lower limit of ~10^4-10^5 on the number of discrete clouds. This rules out conclusively the bloated-stars scenario, regardless of any plausible line-broadening mechanisms. The upper limit on the size of the clouds is ~10^12 cm, which is comparable to the size implied by photoionization models. This strongly suggests that gas in the broad-line region is structured as a smooth rather than a clumped flow, most likely in a rotationally dominated thick disk-like configuration. However, it remains to be clarified why such a smooth, gravity-dominated flow generates double-peaked emission lines only in a small fraction of active galactic nuclei.
description: 12 pages, including 3 figures, accepted for publication in The Astrophysical Journal
Dynamic Assessment of Bertrand Oligopsony in the U.S. Cattle Procurement Market
Creators: name: Ji, In Bae
name: Chung, Chanjin
name: Ji, In Bae
name: Chung, Chanjin
Publisher: name: Unknown
Year: 2011
Subjects: subject: Agribusiness
subject: Demand and Price Analysis
subject: Industrial Organization
subject: Livestock Production/Industries
subject: Marketing
subject: FOS: Economics and business
subject: cattle cycle
subject: concentration
subject: market power
subject: NEIO
subject: oligopsony
subject: seasonality

description: The new empirical industrial organization approach with the Bertrand model is employed to measure the oligopsony market power in the U.S. cattle procurement market. The assumption of price competition (Bertrand model) based on the nature of cattle production such as cattle cycle and seasonality is used and compared to quantity competition (Cournot model). The empirical results show that the oligopsony market power exists in the U.S. cattle procurement market. The cattle cycle and seasonality affect the oligopsony market power and the cattle cycle causes the change of market power. However, concentration has a negative effect on the oligopsony market power.
Lessons learned from the early performance evaluation of Intel Optane DC Persistent Memory in DBMS
Creators: name: Wu, Yinjun
name: Park, Kwanghyun
name: Sen, Rathijit
name: Kroth, Brian
name: Do, Jaeyoung
Publisher: name: arXiv
Year: 2020
Subjects: subject: Databases (cs.DB)
subject: FOS: Computer and information sciences

description: Non-volatile memory (NVM) is an emerging technology, which has the persistence characteristics of large capacity storage devices(e.g., HDDs and SSDs), while providing the low access latency and byte-addressablity of traditional DRAM memory. This unique combination of features open up several new design considerations when building database management systems (DBMSs), such as replacing DRAM (as the main working space memory) or block devices (as the persistent storage), or complementing both at the same time for several DBMS components (such as access methods,storage engine, buffer management, logging/recovery, etc). However, interacting with NVM requires changes to application software to best use the device (e.g. mmap and clflush of small cache lines instead of write and fsync of large page buffers). Before introducing (potentially major) code changes to the DBMS for NVM, developers need a clear understanding of NVM performance in various conditions to help make better design choices. In this paper, we provide extensive performance evaluations conducted with a recently released NVM device, Intel Optane DC Persistent Memory (PMem), under different configurations with several micro-benchmark tools. Further, we evaluate OLTP and OLAP database workloads (i.e., TPC-C and TPC-H) with Microsoft SQL Server 2019 when using the NVM device as an in-memory buffer pool or persistent storage. From the lessons learned we share some recommendations for future DBMS design with PMem, e.g.simple hardware or software changes are not enough for the best use of PMem in DBMSs.
Probing axion dark matter with 21cm fluctuations from minihalos
Creators: name: Kadota, Kenji
name: Sekiguchi, Toyokazu
name: Tashiro, Hiroyuki
Publisher: name: arXiv
Year: 2020
Subjects: subject: Cosmology and Nongalactic Astrophysics (astro-ph.CO)
subject: High Energy Physics - Phenomenology (hep-ph)
subject: FOS: Physical sciences

description: If the symmetry breaking inducing the axion occurs after the inflation, the large axion isocurvature perturbations can arise due to a different axion amplitude in each causally disconnected patch. This causes the enhancement of the small-scale density fluctuations which can significantly affect the evolution of structure formation. The epoch of the small halo formation becomes earlier and we estimate the abundance of those minihalos which can host the neutral hydrogen atoms to result in the 21cm fluctuation signals. We find that the future radio telescopes, such as the SKA, can put the axion mass bound of order $m_a \gtrsim 10^{-13}$ eV for the simple temperature-independent axion mass model, and the bound can be extended to of order $m_a \gtrsim 10^{-8}$eV for a temperature-dependent axion mass.
description: 15 pages, 10 figures
Evaporation of a thin film: diffusion of the vapour and Marangoni instabilities
Creators: name: Sultan, Eric
name: Boudaoud, Arezki
name: Amar, Martine Ben
Publisher: name: arXiv
Year: 2004
Subjects: subject: Soft Condensed Matter (cond-mat.soft)
subject: FOS: Physical sciences

description: The stability of an evaporating thin liquid film on a solid substrate is investigated within lubrication theory. The heat flux due to evaporation induces thermal gradients; the generated Marangoni stresses are accounted for. Assuming the gas phase at rest, the dynamics of the vapour reduces to diffusion. The boundary condition at the interface couples transfer from the liquid to its vapour and diffusion flux. A non-local lubrication equation is obtained; this non-local nature comes from the Laplace equation associated with quasi-static diffusion. The linear stability of a flat film is studied in this general framework. The subsequent analysis is restricted to moderately thick films for which it is shown that evaporation is diffusion limited and that the gas phase is saturated in vapour in the vicinity of the interface. The stability depends only on two control parameters, the capillary and Marangoni numbers. The Marangoni effect is destabilising whereas capillarity and evaporation are stabilising processes. The results of the linear stability analysis are compared with the experiments of Poulard et al (2003) performed in a different geometry. In order to study the resulting patterns, the amplitude equation is obtained through a systematic multiple-scale expansion. The evaporation rate is needed and is computed perturbatively by solving the Laplace problem for the diffusion of vapour. The bifurcation from the flat state is found to be a supercritical transition. Moreover, it appears that the non-local nature of the diffusion problem unusually affects the amplitude equation.
Surface Conductivity in Antiferromagnetic Semiconductor CrSb$_2$
Creators: name: Du, Qianheng
name: Fu, Huixia
name: Ma, Junzhang
name: Chikina, A.
name: Radovic, M.
name: Yan, Binghai
name: Petrovic, C.
Publisher: name: arXiv
Year: 2020
Subjects: subject: Materials Science (cond-mat.mtrl-sci)
subject: Mesoscale and Nanoscale Physics (cond-mat.mes-hall)
subject: FOS: Physical sciences

description: The contribution of bulk and surface to the electrical resistance along crystallographic \textit{b}- and \textit{c}-axes as a function of crystal thickness gives evidence for a temperature independent surface states in an antiferromagnetic narrow-gap semiconductor CrSb$_{2}$. ARPES shows a clear electron-like pocket at $Γ$-$Z$ direction which is absent in the bulk band structure. First-principles calculations also confirm the existence of metallic surface states inside the bulk gap. Whereas combined experimental probes point to enhanced surface conduction similar to topological insulators, surface states are trivial since CrSb$_2$ exhibits no band inversion.
A Globally Flexible Model for Crop Yields Under Weather Risk
Creators: name: Cooper, Joseph C.
name: Wallander, Steven
name: Cooper, Joseph C.
name: Wallander, Steven
Publisher: name: Unknown
Year: 2010
Subjects: subject: Crop Production/Industries
subject: Risk and Uncertainty
subject: Crop yield distributions
subject: flexible fourier transforms
subject: quantile regression

description: The literature on climate change and crop yields recognizes the need to allow for highly non-linear marginal effects. This study combines these two areas of the literature by using Flexible Fourier Transforms (FFT’s) to ensure flexibility for both the time trend and the weather effects. This study also illustrates how FFT’s can be combined with quantile regression (QR) to provide both robustness to outliers and information on the scale effects of time and weather variables. For U.S. county level data on corn, soybeans, and winter wheat, we estimate the relationship between yield and temperature and precipitation using a traditional parametric expected-yield estimator, our quantile-FFT regression evaluated at the median, and our QR-FFT regression that incorporates information on the tails of the distribution. We find that quadratic terms are not sufficient for capturing nonlinearities in the relationship between yield and the explanatory variables.
Holography and unitarity
Creators: name: Giddings, Steven B.
Publisher: name: arXiv
Year: 2020
Subjects: subject: High Energy Physics - Theory (hep-th)
subject: General Relativity and Quantum Cosmology (gr-qc)
subject: FOS: Physical sciences

description: If holography is an equivalence between quantum theories, one might expect it to be described by a map that is a bijective isometry between bulk and boundary Hilbert spaces, preserving the hamiltonian and symmetries. Holography has been believed to be a property of gravitational (or string) theories, but not of non-gravitational theories; specifically Marolf has argued that it originates from the gauge symmetries and constraints of gravity. These observations suggest study of the assumed holographic map as a function of the gravitational coupling $G$. The zero coupling limit gives ordinary quantum field theory, and is therefore not necessarily expected to be holographic. This, and the structure of gravity at non-zero $G$, raises important questions about the full map. In particular, construction of a holographic map appears to require as input a solution of the nonperturbative analog of the bulk gravitational constraints, that is, the unitary bulk evolution. Moreover, examination of the candidate boundary algebra, including the boundary hamiltonian, reveals commutators that don't close in the usual fashion expected for a boundary theory.
description: 20 pages, 3 figures, harvmac
The Holomorphic Tension of Nonabelian Vortices
Creators: name: Bolognesi, Stefano
Publisher: name: arXiv
Year: 2004
Subjects: subject: High Energy Physics - Theory (hep-th)
subject: FOS: Physical sciences

description: We continue the work hep-th/0411075 considering here the case of degenerate masses. A nonabelian vortex arises in r-vacua upon the breaking by a superpotential for the adjoint field. We find the BPS tension in the strong coupling regime computing the dual-quark condensate. Then we find that it is equal to a simple quantity in the chiral ring of the theory and so we conjecture the validity of our result out of the strong coupling regime. Our result gives an interesting hint about the duality r N_f-r, seeing it as the exchange first second sheet of N=1 Riemann surface.
description: 12 pages 1 figure. v3: Revised version. v4: Added a note on the non-BPS correction. v5: Typos corrected, submitted to NPB
Estimating community benefits from tourism: The case of Carpentaria Shire
Creators: name: Greiner, Romy
name: Stoeckl, Natalie
name: Schweigert, Roman
name: Greiner, Romy
name: Stoeckl, Natalie
name: Schweigert, Roman
Publisher: name: Unknown
Year: 2004
Subjects: subject: Environmental Economics and Policy
subject: Marketing
subject: FOS: Economics and business
subject: tourism impact
subject: net benefit
subject: savanna regions
subject: destination management
subject: host community
subject: grey nomads

description: The small rural communities in Australia's tropical savanna landscapes depend upon the region's natural resources for income and employment. Historically primary industries - including mining, grazing and, in the case of coastal communities, fishing - have been the pillars of economic activity in those regions. More recently, tourism has emerged as an additional nature-based industry, which offers new development and employment opportunities for populations in remote regions. Net benefits from tourism accrue from the balance of economic, social and environmental interactions of tourists with a destination. This paper presents a model of tourism impact in the Carpentaria shire of North West Queensland. A methodology is developed for tracking and quantifying social, economic and environmental impacts. Data from an in-progress research project are presented and analysed to test the hypothesis that community benefits could be improved without an increase in visitor numbers, by changing the composition of visitors to the region. Interpretations are offered as to how both, sectorial and regional planning and management can effect improved community benefits from tourism.
Additional file 1 of What are the barriers, facilitators and interventions targeting help-seeking behaviours for common mental health problems in adolescents? A systematic review
Creators: name: Velasco, Antonia Aguirre
name: Cruz, Ignacio Silva Santa
name: Billings, Jo
name: Jimenez, Magdalena
name: Rowe, Sarah
Publisher: name: figshare
Year: 2020
Subjects: subject: Medicine
subject: Sociology
subject: FOS: Sociology
subject: 69999 Biological Sciences not elsewhere classified
subject: FOS: Biological sciences
subject: 80699 Information Systems not elsewhere classified
subject: FOS: Computer and information sciences
subject: Cancer
subject: Science Policy
subject: 111714 Mental Health
subject: FOS: Health sciences

description: Additional file 1.
A characterization of quasipositive Seifert surfaces (Constructions of quasipositive knots and links, III)
Creators: name: Rudolph, Lee
Publisher: name: arXiv
Year: 2004
Subjects: subject: Geometric Topology (math.GT)
subject: FOS: Mathematics
subject: 57M25

description: This article was originally published in Topology 31 (1992). The present hyperTeXed redaction corrects a few typographical errors and updates the references.
description: 8 pages, 5 figures
Additional file 1 of The performance of acute versus antecedent patient characteristics for 1-year mortality prediction during intensive care unit admission: a national cohort study
Creators: name: Kerckhoffs, Monika C.
name: Brinkman, Sylvia
name: Keizer, Nicolet De
name: Soliman, Ivo W.
name: Lange, Dylan W. De
name: Delden, Johannes J. M. Van
name: Dijk, Diederik Van
Publisher: name: figshare
Year: 2020
Subjects: subject: Medicine
subject: 39999 Chemical Sciences not elsewhere classified
subject: FOS: Chemical sciences
subject: 69999 Biological Sciences not elsewhere classified
subject: FOS: Biological sciences

description: Additional file 1: Table E1. Detailed demographic characteristics. Figure E1. Percentage survival over time for groups with different ICU lengths of stay.
Additional file 1 of Factors associated with sexual and reproductive health behaviour of street-involved young people: findings from a baseline survey in Southwest Nigeria
Creators: name: Olaleye, Atinuke O.
name: Obiyan, Mary O.
name: Morenike O. Folayan
Publisher: name: figshare
Year: 2020
Subjects: subject: Medicine
subject: Cell Biology
subject: Biotechnology
subject: Sociology
subject: FOS: Sociology
subject: 69999 Biological Sciences not elsewhere classified
subject: FOS: Biological sciences
subject: Science Policy

description: Additional file 1: Supplementary File 1.. Recruitment Characteristics for Street-Involved Young People in two urban communities, South-West, Nigeria (Jan – Feb 2019)
Persistence of Topological Phases in Non-Hermitian Quantum Walks
Creators: name: Mittal, Vikash
name: Raj, Aswathy
name: Dey, Sanjib
name: Goyal, Sandeep K.
Publisher: name: arXiv
Year: 2020
Subjects: subject: Quantum Physics (quant-ph)
subject: FOS: Physical sciences

description: Discrete-time quantum walks are known to exhibit exotic topological states and phases. Physical realization of quantum walks in a noisy environment may destroy these phases. We investigate the behavior of topological states in quantum walks in the presence of a lossy environment. The environmental effects in the quantum walk dynamics are addressed using the non-Hermitian Hamiltonian approach. We show that the topological phases of the quantum walks are robust against moderate losses. The topological order in one-dimensional split-step quantum walk persists as long as the Hamiltonian is $\mathcal{PT}$-symmetric. Although the topological nature persists in two-dimensional quantum walks as well, the $\mathcal{PT}$-symmetry has no role to play there. Furthermore, we observe the noise-induced topological phase transition in two-dimensional quantum walks.
description: 15 pages, 8 figures. Comments or suggestions are most welcome
Dynamical decay of a massive multiple system in Orion KL?
Creators: name: Gomez, Laura
name: Rodriguez, Luis F.
name: Loinard, Laurent
name: Lizano, Susana
name: Poveda, Arcadio
name: Allen, Christine
Publisher: name: arXiv
Year: 2005
Subjects: subject: Astrophysics (astro-ph)
subject: FOS: Physical sciences

description: We present absolute astrometry of 35 radio sources in the Orion Trapezium and Becklin-Neugebauer/Kleinman-Low regions, obtained from Very Large Array archival observations collected over a period of 15 years. By averaging the results for all the sources, we estimate the mean absolute proper motion of Orion to be --in Galactic coordinates-- $μ_\ell \cos b$ = +2.1 $\pm$ 0.2 mas yr$^{-1}$; $μ_b$ = $-$0.1 $\pm$ 0.2 mas yr$^{-1}$. These values agree remarkably well with those expected from the differential rotation of the Milky Way. Subtraction of this mean motion from the individual measurements allows us to register all proper motions to the rest frame of the Orion nebula, and identify radio sources with large residual velocities. In the KL region, we find three sources in this situation: the BN object, the radio source I, and the radio counterpart of the infrared source n. All three objects appear to be moving away from a common point where they must all have been located about 500 years ago. This suggests that all three sources were originally part of a multiple massive stellar system that recently disintegrated as a result of a close dynamical
description: Accepted for publication in the ApJ
Using 'Inclusive Wealth' to Measure and Model Sustainable Development in Australia: A working example
Creators: name: Harris, Michael
name: Pearson, Leonie J.
name: Harris, Michael
name: Pearson, Leonie J.
Publisher: name: Unknown
Year: 2004
Subjects: subject: Production Economics
subject: inclusive wealth
subject: sustainable development
subject: capital stocks
subject: production systems

description: Australia in 1992 adopted the National Strategy for Ecologically Sustainable Development to ensure all future development occurs in a 'sustainable' manner. Measurement of the nation's sustainable development is currently conducted through the OECD Environmental Performance Review and various other ad-hoc indicators or measures have been proposed, such as greening the national accounts (Green Gross National Product) and the Genuine Progress Indicator. No one has identified a clear and precise way to either measure or model sustainable development in Australia. By trialing the implementation of inclusive wealth theory in Australia, this paper aims to identify and comment on the issues of measuring and modelling sustainable development as a stock measure in Australia (measuring the change in composition of national assets over time). Conceptual issues of implementation will be discussed with examples provided from two trial regions Goulburn Broken Catchment (VIC) and Murrumbidgee Valley (NSW).
Managing Risks of Drought in Indian Agriculture: Role of Credit Institutions
Creators: name: Badatya, K.C.
name: Badatya, K.C.
Publisher: name: Unknown
Year: 2005
Subjects: Agricultural and Food Policy

description: The pattern of growth in agriculture and rainfall has been studied along with droughts in the past and the role of the credit institutions in managing droughts. There has been no significant breakthrough in research on dryland farming. Two major negative features of agricultural growth presently affecting agriculture are: (i) instability in year-to-year production, and (ii) inter-regional and inter-crop disparities in production performance. It has been pointed that the decline in foodgrains production during the drought years (13.2% in 2002-03 over 2001-02) has incapacitated our contingency production programmes. The reduction in farm income as a result of drought forces the small and marginal farmers to borrow from other sources to meet their consumption requirements. The debt repayment capacity of the borrowers gets impaired heavily and they find it extremely difficult to repay their loan installments as per schedule. To mitigate the problems of the borrowers and credit institutions during the period of drought, NABARD sanctions conversion of short-term loans into medium-term loans (MTC loans) for 3 years and reschedulement of earlier converted loans for a period of 5-7 years in the event of natural calamities. A quick study on MTC loans in Andhra Pradesh has revealed that 23 per cent of the sample farmers have faced problems of one or other type as associated with MTC crop loans. Farmers have reported that temporary relief from repayment of bank loan, lower repayment installment are certain merits associated with MTC loans. About 71 per cent have reported temporary relief from repayment as the major advantage of MTC crop loan. Besides credit, drought has its implications for both food- and water-security. Appropriate strategies have to be evolved in terms of appropriate crop planning, thrust on irrigation, watershed development, thrust on rural nonfarm sector for employment creation, etc. depending on the resource endowment of the arid and semi-arid regions.