cometadata/datacite-rtg-text-other-reclassification-records huggingface dataset:
Magnetoelastic Coupling and Phases in the Skyrmion Lattice Magnet Gd2PdSi3 Discovered by High-resolution Dilatometry
Creators: name: Spachmann, S.
name: Elghandour, A.
name: Frontzek, M.
name: Löser, W.
name: Klingeler, R.
Publisher: name: arXiv
Year: 2021
Subjects: subject: Strongly Correlated Electrons (cond-mat.str-el)
subject: FOS: Physical sciences

description: We report detailed thermodynamic studies on high-quality single crystals of the centrosymmetric skyrmion-hosting intermetallic Gd2PdSi3 by means of high-resolution capacitance dilatometry in fields up to 15 T which are complemented by specific heat and magnetization studies. Our dilatometric measurements show magnetoelastic effects associated with antiferromagnetic order at TN1 = 22.3 K and TN2 = 19.7 K, as well as strong field effects in an applied magnetic field of 15 Tup to 200 K (150 K) for B||c (B||a*, i.e. B perp c). The data allow us to complete the magneticphase diagram, including a new feature at T* approx 12 K below which a new degree of freedom becomesrelevant. For the first time, the magnetic B vs. T phase diagram for the a*-axis is also reported. Grüneisen analysis shows the onset of magnetic contributions around 60 K, i.e., well above TN1. Uniaxial pressure dependencies of opposite sign, -1.3 K/GPa and 0.3 K/GPa, are extracted for the out-of-plane and in-plane directions at TN1. For T* we obtain dT*/dpc= 1.4 K/GPa. In particular we elucidate thermodynamic properties of the recently discovered skyrmion lattice phase and show that it is strongly enhanced by uniaxial pressure.
Synthetic biology: enormous possibility, exaggerated perils
Creators: name: Russ, Zachary N
Publisher: name: Springer Nature
Year: 2008
Subjects: Genetic Engineering
Artemisinin
Synthetic Biology
Control Laboratory Environment
Genetic Engineering Method

description: The following essay was written by a freshman undergraduate student majoring in Bioengineering at the University of Maryland, Mr. Zachary Russ. Mr. Russ was one of 94 students who submitted a 1000 to 1200 word essay to the 3rd Annual Bioethics Essay Contest sponsored by the Institute of Biological Engineering (IBE). A group of professionals in Biological Engineering assessed and ranked the essays in a blinded process. Five semi-finalists were invited to present their essays at a session at the annual meeting of IBE in Chapel Hill, NC on March 8, 2008. Five judges scored the presentations at the annual meeting and selected Mr. Russ's contribution as the overall winner (1st Place). Below is his essay.
Plio-Pleistocene environmental changes shape present day phylogeography of New Zealand’s southern beeches (Nothofagaceae)
Creators: name: Rawlence, Nicolas J.
name: Potter, Benjamin C. M.
name: Dussex, Nic
name: Lachie Scarsbrook
name: Orlovich, David A.
name: Waters, Jonathan M.
name: McGlone, Matt
name: Knapp, Michael
Publisher: name: Taylor & Francis
Year: 2020
Subjects: subject: Genetics
subject: FOS: Biological sciences
subject: Evolutionary Biology
subject: 59999 Environmental Sciences not elsewhere classified
subject: FOS: Earth and related environmental sciences
subject: Ecology
subject: 69999 Biological Sciences not elsewhere classified
subject: Plant Biology

description: Island ecosystems can be severely affected by climate change as they provide limited opportunities for species to track their habitat. Studying the population dynamics of keystone species from these ecosystems can shed a light on climate – ecosystem interactions. Southern beeches are such keystone species in New Zealand with beech forests constituting the most abundant forest cover on the two main islands. Here we use 2.4 kilobase pairs of chloroplast genetic markers from four species of southern beech across their geographic distribution to help elucidate the Pleistocene history of New Zealand forests, and the processes that led to the present-day distribution of southern beech diversity. Broadly concordant phylogeographic patterns were observed across all beech species analysed. The centre of genetic diversity in silver beech was in the northern South Island, with unique haplotypes in the southern South Island, and southern and northern North Island, separated by known ‘beech gaps’. Significantly less genetic diversity was evident in the subgenus Fuscospora (red, hard, black/mountain beech). All three species shared a single haplotype in the southern South Island, and a unique haplotype north of the central South Island ‘beech gap’. Our study indicates that the present-day distribution of southern beech diversity in New Zealand is largely a result of Plio-Pleistocene environmental changes, with survival in cryptic southern South Island and multiple North Island in situ microrefugia throughout recent glacial cycles. By contrast, the northern South Island was likely the only New Zealand region that supported large (silver) beech populations throughout the Pleistocene. With beech species in New Zealand being keystone forest species, the distribution of the genus throughout the Pleistocene provides a proxy for forest cover at different times. It helps understand the ecological challenges the New Zealand forest fauna and flora were exposed to during the climate oscillations of the ice ages.
Inorganic powder analysis by time-wavelength resolved luminescence spectroscopy
Creators: name: Paski, Edgar Francis
Publisher: name: University of British Columbia
Year: 2010

description: An investigation into the potential of time-wavelength resolved luminescence spectroscopy for the analysis of inorganic powders was performed. A time-wavelength resolved luminescence spectrometer consisting of an excimer laser, scanning monochromator, and gated integrator was constructed. The spectrometer had wavelength coverage from 265 nm to 800 nm, it was capable of measuring lifetimes between 100 ns and 500 ms. Sample excitation was done at 193 nm and 248 nm. A luminescence system model of first order decay in the time domain and a Gaussian function for the emission band was assumed. The time-wavelength resolved luminescence spectrum was described by the parameters: lifetime, peak maxima, peak halfwidth, and intensity factor. Parameter estimation was done with an algorithm employing a linear algebra construct and simplex optimization. The algorithm's performance on highly overlapped spectra was evaluated. For two component mixtures having a 1 % RSD noise level, overlaps greater than 0.3 halfwidths in the spectral domain and lifetime ratios greater than 1:1.3 were resolved with all parameter estimates having an error of less than ±2%. The luminescence spectra of CaMo0₄, SrMo0₄, BaMo0₄, ZnMoO₄, CdMo0₄, PbMoO₄, CaWO₄, SrW0₄, BaWO₄, ZnWO₄, CdW0₄ and PbWO₄ consisted of broad featureless bands showing simple exponential decay. Mixed crystals of Ca(MOxW₁-x)O₄ and Sr(MOxW₁-x)0₄ were examined. Tungstate emission was quenched by molybdate, the molybdate emission dominated when x was greater than 0.15. The tungstate lifetime was found to be proportional to molybdate concentration. The luminescence spectra of CaZrO₃, SrZr O₃, BaZr O₃ CaHfO₃ SrHfO₃, BaHfO₃, CaO, SrO, and BaO as pure compounds and doped with T1, Pb, Sb, and Bi were studied. The pure zirconates and hafnates showed short lived (<100 ns) luminescence with 248 not excitation; no readily discernible luminescence was observed with 193 nm excitation. Doped compounds tended to show luminescence characteristic of the dopant ion.
Bayesian constraints on the origin and geology of exo-planetary material using a population of externally polluted white dwarfs
Creators: name: Harrison, John H. D.
name: Bonsor, Amy
name: Kama, Mihkel
name: Buchan, Andrew M.
name: Blouin, Simon
name: Koester, Detlev
Publisher: name: arXiv
Year: 2021
Subjects: subject: Earth and Planetary Astrophysics (astro-ph.EP)
subject: Solar and Stellar Astrophysics (astro-ph.SR)
subject: FOS: Physical sciences

description: White dwarfs that have accreted planetary bodies are a powerful probe of the bulk composition of exoplanetary material. In this paper, we present a Bayesian model to explain the abundances observed in the atmospheres of 202 DZ white dwarfs by considering the heating, geochemical differentiation, and collisional processes experienced by the planetary bodies accreted, as well as gravitational sinking. The majority (>60%) of systems are consistent with the accretion of primitive material. We attribute the small spread in refractory abundances observed to a similar spread in the initial planet-forming material, as seen in the compositions of nearby stars. A range in Na abundances in the pollutant material is attributed to a range in formation temperatures from below 1,000K to higher than 1,400K, suggesting that pollutant material arrives in white dwarf atmospheres from a variety of radial locations. We also find that Solar System-like differentiation is common place in exo-planetary systems. Extreme siderophile (Fe, Ni or Cr) abundances in 8 systems require the accretion of a core-rich fragment of a larger differentiated body to at least a 3sigma significance, whilst one system shows evidence that it accreted a crust-rich fragment. In systems where the abundances suggest that accretion has finished (13/202), the total mass accreted can be calculated. The 13 systems are estimated to have accreted masses ranging from the mass of the Moon to half that of Vesta. Our analysis suggests that accretion continues for 11Myrs on average.
description: 16 pages, MNRAS, in press
Genome assembly forensics: finding the elusive mis-assembly
Creators: name: Phillippy, Adam M
name: Schatz, Michael C
name: Pop, Mihai
Publisher: name: Springer Nature
Year: 2008
Subjects: Bacterial Artificial Chromosome
Additional Data File
Repeat Copy
Assembly Quality
Suspicious Region

description: We present the first collection of tools aimed at automated genome assembly validation. This work formalizes several mechanisms for detecting mis-assemblies, and describes their implementation in our automated validation pipeline, called amosvalidate. We demonstrate the application of our pipeline in both bacterial and eukaryotic genome assemblies, and highlight several assembly errors in both draft and finished genomes. The software described is compatible with common assembly formats and is released, open-source, at http://amos.sourceforge.net .
title: Distribution Of Plankton And Particles Across Georges Bank During 1994-1995 Globec Cruises: Results Of Cross-Bank Surveys Using The Video Plankton Recorder
Creators: name: Ashjian, Carin
name: Davis, Cabell
name: Gallager, Scott
name: Alatalo, Philip
Publisher: name: ASC 1997 - T
Year: 2024
Subjects: Ecosystem observation, processes and dynamics

description: No abstracts are to be cited without prior reference to the author.The interaction of physical and biologieal processes on Georges Bank act to produce the distributions ofplankton and particles observed on Georges Bank. Physically, the Bank is characterized by an anti-cycloniccirculation which isolates the center of the Bank from the surrounding Slope Water and Gulf of Maine.Several physical regions are found on the Bank, separated by distinct frontal regions. Although the dominantcirculation usually maintains thc integrity of the Bank ecosystem, episodic events (e.g. storms, ringinteractions) and smaIl-scale cross-frontal exchange may influence the distribution of plankton.
Macroscopic Determinism in Interacting Systems Using Large Deviation Theory
Creators: name: La Cour, Brian R.
name: Schieve, William C.
Publisher: name: arXiv
Year: 2021
Subjects: subject: Statistical Mechanics (cond-mat.stat-mech)
subject: FOS: Physical sciences

description: We consider the quasi-deterministic behavior of systems with a large number, $n$, of deterministically interacting constituents. This work extends the results of a previous paper [J. Stat. Phys. 99:1225-1249 (2000)] to include vector-valued observables on interacting systems. The approach used here, however, differs markedly in that a level-1 large deviation principle (LDP) on joint observables, rather than a level-2 LDP on empirical distributions, is employed. As before, we seek a mapping $ψ_{t}$ on the set of (possibly vector-valued) macrostates such that, when the macrostate is given to be $a_0$ at time zero, the macrostate at time $t$ is $ψ_{t}(a_0)$ with a probability approaching one as $n$ tends to infinity. We show that such a map exists and derives from a generalized dynamic free energy function, provided the latter is everywhere well defined, finite, and differentiable. We discuss some general properties of $ψ_{t}$ relevant to issues of irreversibility and end with an example of a simple interacting lattice, for which an exact macroscopic solution is obtained.
description: 31 pages, 4 figures
title: Seasonal And Interannual Changes In Calanus Finmarchicus And Pseudocalanus Spp. In The Gulf Of Maine (Northeastern Us Shelf)
Creators: name: A.Conversi
name: S.Piontkovski
name: S.Hameed
Publisher: name: ASC 1997 - T
Year: 2024
Subjects: Ecosystem observation, processes and dynamics

description: No abstracts are to be cited without prior reference to the author.The Continuous Plankton Recorder and the Comprehensive Ocean-Atmosphere DataSet were used in this work to study the temporal dynamies over 30 years of twozooplanktonic species, Calanus finmarchicus and Pseudocalanus spp., in the Gulfof Maine.
Term-tissue specific models for prediction of gene ontology biological processes using transcriptional profiles of aging in drosophila melanogaster
Creators: name: Zhang, Wensheng
name: Zou, Sige
name: Song, Jiuzhou
Publisher: name: Springer Nature
Year: 2008
Subjects: Support Vector Machine
Gene Ontology
Transcriptional Profile
Member Gene
Child Term

description: Predictive classification on the base of gene expression profiles appeared recently as an attractive strategy for identifying the biological functions of genes. Gene Ontology (GO) provides a valuable source of knowledge for model training and validation. The increasing collection of microarray data represents a valuable source for generating functional hypotheses of uncharacterized genes. This study focused on using support vector machines (SVM) to predict GO biological processes from individual or multiple-tissue transcriptional profiles of aging in Drosophila melanogaster. Ten-fold cross validation was implemented to evaluate the prediction. One-tail Fisher's exact test was conducted on each cross validation and multiple testing was addressed using BH FDR procedure. The results showed that, of the 148 pursued GO biological processes, fifteen terms each had at least one model with FDR-adjusted p-value (Adj.p) <0.05 and six had the values between 0.05 and 0.25. Furthermore, all these models had the prediction sensitivity (SN) over 30% and specificity (SP) over 80%. We proposed the concept of term-tissue specific models indicating the fact that the major part of the optimized prediction models was trained from individual tissue data. Furthermore, we observed that the memberships of the genes involved in all the three pursued children biological processes on mitochondrial electron transport could be predicted from the transcriptional profiles of aging (Adj.p < 0.01). This finding may be important in biology because the genes of mitochondria play a critical role in the longevity of C. elegans and D. melanogaster.
Evidence for divergent selection between the molecular forms of Anopheles gambiae: role of predation
Creators: name: Diabaté, Abdoulaye
name: Dabiré, Roch K
name: Heidenberger, Kyle
name: Crawford, Jacob
name: Lamp, William O
name: Culler, Lauren E
name: Lehmann, Tovi
Publisher: name: Springer Nature
Year: 2008
Subjects: Rice Field
Molecular Form
Anopheles Gambiae
Adult Mosquito
Emergence Success

description: The molecular forms of Anopheles gambiae are undergoing speciation. They are characterized by a strong assortative mating and they display partial habitat segregation. The M form is mostly found in flooded/irrigated areas whereas the S form dominates in the surrounding areas, but the ecological factors that shape this habitat segregation are not known. Resource competition has been demonstrated between species undergoing divergent selection, but resource competition is not the only factor that can lead to divergence. In a field experiment using transplantation of first instar larvae, we evaluated the role of larval predators in mediating habitat segregation between the forms. We found a significant difference in the ability of the molecular forms to exploit the different larval sites conditioned on the presence of predators. In absence of predation, the molecular forms outcompeted each other in their respective natural habitats however, the developmental success of the M form was significantly higher than that of the S form in both habitats under predator pressure. Our results provide the first empirical evidence for specific adaptive differences between the molecular forms and stress the role of larval predation as one of the mechanisms contributing to their divergence.
Role of interference in quantum state transfer through spin chains
Creators: name: Lyakhov, A. O.
name: Braun, Daniel
name: Bruder, C.
Publisher: name: arXiv
Year: 2007
Subjects: subject: Quantum Physics (quant-ph)
subject: FOS: Physical sciences

description: We examine the role that interference plays in quantum state transfer through several types of finite spin chains, including chains with isotropic Heisenberg interaction between nearest neighbors, chains with reduced coupling constants to the spins at the end of the chain, and chains with anisotropic coupling constants. We evaluate quantitatively both the interference corresponding to the propagation of the entire chain, and the interference in the effective propagation of the first and last spins only, treating the rest of the chain as black box. We show that perfect quantum state transfer is possible without quantum interference, and provide evidence that the spin chains examined realize interference-free quantum state transfer to a good approximation.
description: 10 figures
MOESM1 of Comparative outcomes of heart failure among existent classes of anti-diabetic agents: a network meta-analysis of 171,253 participants from 91 randomized controlled trials
Creators: name: Yang, Da-ya
name: He, Xin
name: Liang, Hui-wei
name: Zhang, Shao-zhao
name: Zhong, Xiang-bin
name: Luo, Chu-fan
name: Du, Zhi-min
name: He, Jian-gui
name: Zhuang, Xiao-dong
name: Liao, Xin-xue
Publisher: name: figshare
Year: 2019
Subjects: subject: Medicine
subject: Sociology
subject: FOS: Sociology
subject: Biological Sciences not elsewhere classified
subject: Information Systems not elsewhere classified
subject: Developmental Biology
subject: Cancer

description: Additional file 1: Table S1. Search strategy
High-throughput sequence alignment using Graphics Processing Units
Creators: name: Schatz, Michael C
name: Trapnell, Cole
name: Delcher, Arthur L
name: Varshney, Amitabh
Publisher: name: Springer Nature
Year: 2007
Subjects: Graphic Processing Unit
Suffix Tree
Compute Unify Device Architecture
Stream Processor
Alignment Kernel

description: The recent availability of new, less expensive high-throughput DNA sequencing technologies has yielded a dramatic increase in the volume of sequence data that must be analyzed. These data are being generated for several purposes, including genotyping, genome resequencing, metagenomics, and de novo genome assembly projects. Sequence alignment programs such as MUMmer have proven essential for analysis of these data, but researchers will need ever faster, high-throughput alignment tools running on inexpensive hardware to keep up with new sequence technologies. This paper describes MUMmerGPU, an open-source high-throughput parallel pairwise local sequence alignment program that runs on commodity Graphics Processing Units (GPUs) in common workstations. MUMmerGPU uses the new Compute Unified Device Architecture (CUDA) from nVidia to align multiple query sequences against a single reference sequence stored as a suffix tree. By processing the queries in parallel on the highly parallel graphics card, MUMmerGPU achieves more than a 10-fold speedup over a serial CPU version of the sequence alignment kernel, and outperforms the exact alignment component of MUMmer on a high end CPU by 3.5-fold in total application time when aligning reads from recent sequencing projects using Solexa/Illumina, 454, and Sanger sequencing technologies. MUMmerGPU is a low cost, ultra-fast sequence alignment program designed to handle the increasing volume of data produced by new, high-throughput sequencing technologies. MUMmerGPU demonstrates that even memory-intensive applications can run significantly faster on the relatively low-cost GPU than on the CPU.
title: A Comparative Study Of Feeding, Condition, And Growth Of Larval Cod And Haddock On Southern Georges Bank, May 1993 Vs. May 1994
Creators: name: Lough, R. G.
name: Caldarone, E. M.
name: Buckley, L. J.
name: Broughton, E.A.
name: Kiladis, M.E.
name: Burns, B.R.
Publisher: name: ASC 1997 - T
Year: 2024
Subjects: Ecosystem observation, processes and dynamics

description: No abstracts are to be cited without prior reference to the author.Low recruitment for some fish species has been linked to poor nutritional condition in the larval stage and to variations in their preferred zooplanktonic prey.
Boundary conditions in the QCD nucleus-nucleus scattering problem
Creators: name: Bondarenko, S.
name: Braun, M. A.
Publisher: name: arXiv
Year: 2007
Subjects: subject: High Energy Physics - Phenomenology (hep-ph)
subject: High Energy Physics - Theory (hep-th)
subject: FOS: Physical sciences

description: In the framework of the effective field theory for interacting BFKL pomerons, applied to nucleus-nucleus scattering, boundary conditions for the classical field equations are discussed. Correspondence with the QCD diagrams at the boundary rapidities requires pomeron interaction with the participating nuclei to be exponential and non-local. Commonly used 'eikonal' boundary conditions, local and linear in fields, follow in the limit of small QCD pomeron-nucleon coupling. Numerical solution of the classical field equations, which sum all tree diagrams for central gold-gold scattering, demonstrates that corrected boundary conditions lead to substantially different results, as compared to the eikonal conditions studied in earlier publications. A breakdown of projectile-target symmetry for particular solutions discovered earlier in \cite{bom} is found to occur at roughly twice lower rapidity. Most important, due to a high non-linearity of the problem, the found asymmetric solutions are not unique but form a family growing in number with rapidity. The minimal value for the action turns out to be much lower than with the eikonal boundary conditions and saturates at rapidities around 10.
description: 19 pages, 8 figures
Comparative study of meningitis dynamics across nine African countries: a global perspective
Creators: name: Broutin, Hélène
name: Philippon, Solenne
name: De Magny, Guillaume Constantin
name: Courel, Marie-Françoise
name: Sultan, Benjamin
name: Guégan, Jean-François
Publisher: name: Springer Nature
Year: 2007
Subjects: Meningitis
Wavelet Analysis
Mass Vaccination
Global Synchrony
Meningococcal Meningitis

description: Meningococcal meningitis (MM) represents an important public health problem especially in the "meningitis belt" in Africa. Although seasonality of epidemics is well known with outbreaks usually starting in the dry season, pluri-annual cycles are still less understood and even studied. In this context, we aimed at study MM cases time series across 9 sahelo-sudanian countries to detect pluri-annual periodicity and determine or not synchrony between dynamics. This global and comparative approach allows a better understanding of MM evolution in time and space in the long-term. We used the most adapted mathematical tool to time series analyses, the wavelet method. We showed that, despite a strong consensus on the existence of a global pluri-annual cycle of MM epidemics, it is not the case. Indeed, even if a clear cycle is detected in all countries, these cycles are not as permanent and regular as generally admitted since many years. Moreover, no global synchrony was detected although many countries seemed correlated. These results of the first large-scale study of MM dynamics highlight the strong interest and the necessity of a global survey of MM in order to be able to predict and prevent large epidemics by adapted vaccination strategy. International cooperation in Public Health and cross-disciplines studies are highly recommended to hope controlling this infectious disease.
Effects of Pore-scale on the Macroscopic Properties of Natural Convection in Porous Media
Creators: name: Gasow, Stefan
name: Lin, Zhe
name: Zhang, Hao Chun
name: Kuznetsov, Andrey V.
name: Avila, Marc
name: Jin, Yan
Publisher: name: arXiv
Year: 2021
Subjects: subject: Fluid Dynamics (physics.flu-dyn)
subject: FOS: Physical sciences

description: Natural convection in porous media is a fundamental process for the long-term storage of CO2 in deep saline aquifers. Typically, details of mass transfer in porous media are inferred from the numerical solution of the volume-averaged Darcy-Oberbeck-Boussinesq (DOB) equations, even though these equations do not account for the microscopic properties of a porous medium. According to the DOB equations, natural convection in a porous medium is uniquely determined by the Rayleigh number. However, in contrast with experiments, DOB simulations yield a linear scaling of the Sherwood number with the Rayleigh number (Ra) for high values of Ra (Ra>>1,300). Here, we perform Direct Numerical Simulations (DNS), fully resolving the flow field within the pores. We show that the boundary layer thickness is determined by the pore size instead of the Rayleigh number, as previously assumed. The mega- and proto- plume sizes increase with the pore size. Our DNS results exhibit a nonlinear scaling of the Sherwood number at high porosity, and for the same Rayleigh number, higher Sherwood numbers are predicted by DNS at lower porosities. It can be concluded that the scaling of the Sherwood number depends on the porosity and the pore-scale parameters, which is consistent with experimental studies.
Features generated for computational splice-site prediction correspond to functional elements
Creators: name: Dogan, Rezarta Islamaj
name: Getoor, Lise
name: Wilbur, W John
name: Mount, Stephen M
Publisher: name: Springer Nature
Year: 2007
Subjects: Splice Site
Composite Feature
Exonic Splice Enhancer
Branch Site
True Splice Site

description: Accurate selection of splice sites during the splicing of precursors to messenger RNA requires both relatively well-characterized signals at the splice sites and auxiliary signals in the adjacent exons and introns. We previously described a feature generation algorithm (FGA) that is capable of achieving high classification accuracy on human 3' splice sites. In this paper, we extend the splice-site prediction to 5' splice sites and explore the generated features for biologically meaningful splicing signals. We present examples from the observed features that correspond to known signals, both core signals (including the branch site and pyrimidine tract) and auxiliary signals (including GGG triplets and exon splicing enhancers). We present evidence that features identified by FGA include splicing signals not found by other methods. Our generated features capture known biological signals in the expected sequence interval flanking splice sites. The method can be easily applied to other species and to similar classification problems, such as tissue-specific regulatory elements, polyadenylation sites, promoters, etc.
PubMed related articles: a probabilistic topic-based model for content similarity
Creators: name: Lin, Jimmy
name: Wilbur, W John
Publisher: name: Springer Nature
Year: 2007
Subjects: Information Retrieval
MeSH
Retrieval Model
Related Article
Test Collection

description: We present a probabilistic topic-based model for content similarity called pmra that underlies the related article search feature in PubMed. Whether or not a document is about a particular topic is computed from term frequencies, modeled as Poisson distributions. Unlike previous probabilistic retrieval models, we do not attempt to estimate relevance–but rather our focus is "relatedness", the probability that a user would want to examine a particular document given known interest in another. We also describe a novel technique for estimating parameters that does not require human relevance judgments; instead, the process is based on the existence of MeSH ® in MEDLINE ®. The pmra retrieval model was compared against bm25, a competitive probabilistic model that shares theoretical similarities. Experiments using the test collection from the TREC 2005 genomics track shows a small but statistically significant improvement of pmra over bm25 in terms of precision. Our experiments suggest that the pmra model provides an effective ranking algorithm for related article search.
74.pdf
Creators: name: Mahboob, Amir Soltany
name: Zahiri, Seyed Hamid
Publisher: name: figshare
Year: 2021
Subjects: subject: 80109 Pattern Recognition and Data Mining
subject: FOS: Computer and information sciences

description: يست و ششمين کنفرانس مهندسي برق ايران ICEE 2018At: Sadjad University of Technology
Analysis-suitable unstructured T-splines: Multiple extraordinary points per face
Creators: name: Wei, Xiaodong
name: Li, Xin
name: Qian, Kuanren
name: Hughes, Thomas J. R.
name: Zhang, Yongjie Jessica
name: Casquero, Hugo
Publisher: name: arXiv
Year: 2021
Subjects: subject: Numerical Analysis (math.NA)
subject: FOS: Mathematics

description: Analysis-suitable T-splines (AST-splines) are a promising candidate to achieve a seamless integration between the design and the analysis of thin-walled structures in industrial settings. In this work, we generalize AST-splines to allow multiple extraordinary points within the same face. This generalization drastically increases the flexibility to build geometries using AST-splines; e.g., much coarser meshes can be generated to represent a certain geometry. The AST-spline spaces detailed in this work have $C^1$ inter-element continuity near extraordinary points and $C^2$ inter-element continuity elsewhere. We mathematically show that AST-splines with multiple extraordinary points per face are linearly independent and their polynomial basis functions form a non-negative partition of unity. We numerically show that AST-splines with multiple extraordinary points per face lead to optimal convergence rates for second- and fourth-order linear elliptic problems. To illustrate a possible isogeometric framework that is already available, we design the B-pillar and the side outer panel of a car using T-splines with the commercial software Autodesk Fusion360, import the control nets into our in-house code to build AST-splines, and import the Bézier extraction information into the commercial software LS-DYNA to solve eigenvalue problems. The results are compared with conventional finite elements. Good agreement is found, but conventional finite elements require significantly more degrees of freedom to reach a converged solution than AST-splines.
title: От концепта «притворная сделка» к концепту «притворное правовое явление»
title: From the Concept of “Fraudulent Transaction” to “Feigned Legal Phenomenon”
Creators: name: Зверева, Полина Константиновна
name: Кириллов, Дмитрий Александрович
Publisher: name: Издательский центр СурГУ
Year: 2021

description: Предметом исследования является концепт «притворное правовое явление». Цель исследования заключается в обосновании корректности распространения логической конструкции притворных сделок на все подобные явления. Задачи исследования: сформулировать дефиницию понятия «притворное правовое явление»; показать важность системного осмысления таких явлений; описать элементы соответствующего юридического состава; охарактеризовать отдельные виды таких явлений; оценить их отражение в юридической науке.
Методологическую основу исследования составляет тезис о приоритете содержания по отношению к форме. Основные методы исследования: абстрагирование, обобщение, концептуальный анализ. Сформулировано общее правило: бессодержательное правовое явление, прикрывающее реальное правовое явление, именуется притворным; оно не имеет правового значения и с точки зрения правовых последствий актуализирует прикрываемое (реальное) правовое явление.
description: The subject of the study is the analysis of the concept of “feigned legal phenomenon”. The purpose of the study and the peculiarity of the author’s approach involve justifying the precision of the extension of the logical construction of fraudulent transactions to all such phenomena. Research objectives are to formulate the definition of the concept of “feigned legal phenomenon”; to show the sense of a systematic understanding of such phenomena; to describe the elements of the relevant legal composition; to characterize certain types of such phenomena; to evaluate their representation in legal science.
The methodological basis of the research is the thesis about the priority of content to form. The main research methods are abstraction, generalization, and conceptual analysis. A universal rule is formulated: a formal legal phenomenon that covers up a real legal phenomenon is called a feigned one, has no legal meaning, and from the point of view of legal consequences actualizes the real legal phenomenon.
title: Comparison Between Numerically Simulated And Observed Drifter Trajectories On George Bank
Creators: name: Naimie, Christopher E.
name: Limeburner, Richard
name: Hannah, Charles G.
name: Beardsley, Robert C.
Publisher: name: ASC 1997 - T
Year: 2024
Subjects: Ecosystem observation, processes and dynamics

description: No abstracts are to be cited without prior reference to the author.We establish the level of agreement between the modeled and observed near-surface Lagrangiancirculation on Georges Bank, through comparisons of numerically simulated and observed 10 meterdeep drifter trajectories.
Conformationally controlled reactions in 14-membered macrolides
Creators: name: Keller, Thomas Hugo
Publisher: name: University of British Columbia
Year: 2010

description: The conformationally controlled reactions of macrolides 42, 43, 72 and 74 were investigated. Treatment of these 14-membered lactones with hydride reducing agents and organocopper reagents led to diastereoselective product formation. The product distributions could be rationalized using low energy starting material or product conformations. A detailed conformational analysis involving MM2/MMP2 calculations and X-ray crystallographic studies led to a simple model for determining these low energy conformations. In order to simplify the identification of ring conformations, an improved procedure for the generation of polar maps was developed. With the aid of polar maps, a previously unknown low energy conformation for 14-membered rings was discovered. The discovery of this new conformation led to an improved nomenclature system for large rings, which considers the number of bonds separating both corner and pseudo corner atoms. Under this proposed nomenclature, the newly discovered conformation is designated the [34'3'4'] conformation. The work described in this thesis also led to a useful method for assigning the stereochemistry of trimethylsilyl enol ethers. Nuclear Overhauser effect difference spectroscopy (NOEDS) was used to unambiguously distinguish between E and Z trimethylsilyl enol ethers. One advantage of this technique over the widely used ¹³C NMR method is that only one isomer is required to accurately assign the E or Z geometry. [Formula Omitted]
title: Hindcasting The Circulation On Georges Bank - Detiding
Creators: name: Lynch, Daniel R.
name: Naimie, Christopher E.
name: Hannah, Charles G.
Publisher: name: ASC 1997 - T
Year: 2024
Subjects: Ecosystem observation, processes and dynamics

description: No abstracts are to be cited without prior reference to the author.The focus of this paper is the detiding of the ADCP velocity observations and the infcrenceof tidal and residual boundary conditions. 80% of the velocity variance is due to tides(Moody et al. (1984)), so the essential subtidal motion will be hidden in the observationswithout a reliable detiding algorithm.
Non-unitary deviation from the tri-bimaximal lepton mixing and its implications on neutrino oscillations
Creators: name: Luo, Shu
Publisher: name: arXiv
Year: 2008
Subjects: subject: High Energy Physics - Phenomenology (hep-ph)
subject: FOS: Physical sciences

description: We propose a new pattern of the neutrino mixing matrix which can be parametrized as the product of an arbitrary Hermitian matrix and the well-known tri-bimaximal mixing matrix. In this scenario, nontrivial values of the smallest neutrino mixing angle θ_13 and the CP-violating phases entirely arise from the non-unitary corrections. We present a complete set of series expansion formulas for neutrino oscillation probabilities both in vacuum and in matter of constant density. We do a numerical analysis to show the non-unitary effects on neutrino oscillations. The possibility of determining small non-unitary perturbations and CP-violating phases is discussed by measuring neutrino oscillation probabilities and constructing "deformed unitarity triangles". Some brief comments on the non-unitary neutrino mixing matrix in the type-II seesaw models are also given.
description: 30 pages, 4 PS figures. More discussions added. Accepted for publication in Phys. Rev. D
BL Lac Contribution to the Extragalactic Gamma-Ray Background
Creators: name: Kneiske, Tanja M.
name: Mannheim, Karl
Publisher: name: arXiv
Year: 2007
Subjects: subject: Astrophysics (astro-ph)
subject: FOS: Physical sciences

description: Very high energy gamma-rays from blazars traversing cosmological distances through the metagalactic radiation field can convert into electron-positron pairs in photon-photon collisions. The converted gamma-rays initiate electromagnetic cascades driven by inverse-Compton scattering off the microwave background photons. Using a model for the time-dependent metagalactic radiation field consistent with all currently available far-infrared-to-optical data, we calculate the cascade contribution from faint, unresolved high- and low-peaked blazars to the extragalactic gamma-ray background as measured by EGRET. For low-peaked blazars, we adopt a spectral index consistent with the mean spectral index of EGRET detected blazars, and the luminosity function determined by Chiang and Mukherjee (1998). For high-peaked blazars, we adopt template spectra matching prototype sources observed with air-Cherenkov telescopes up to 30 TeV, and a luminosity function based on X-ray measurements. The low number of about 20 for nearby high-peaked blazars with a flux exceeding 10^-11 cm^-2 s^-1 above 300 GeV inferred from the luminosity function is consistent with the results from air-Cherenkov telescope observations. Including the cascade emission from higher redshifts, the total high-peaked blazar contribution to the observed gamma-ray background at GeV energies can account up to about 30.
description: 8 pages, 7 figures, accepted by A&A, final version
Finite dimensional representations of W-algebras
Creators: name: Losev, Ivan
Publisher: name: arXiv
Year: 2008
Subjects: subject: Representation Theory (math.RT)
subject: FOS: Mathematics
subject: 17B35

description: W-algebras of finite type are certain finitely generated associative algebras closely related to the universal enveloping algebras of semisimple Lie algebras. In this paper we prove a conjecture of Premet that gives an almost complete classification of finite dimensional irreducible modules for W-algebras. Also we study a relation between Harish-Chandra bimodules and bimodules over $W$-algebras.
description: 19 pages, v2, 21 pages, moderate changes, some mistakes fixed, Corollary 1.3.3 is added, v3 24 pages three new subsections and several remarks added v4 proof of Lemma 2.4.1 expanded, Remark 2.3.2 added, v5 29 pages major changes, v6 more changes, v7 final
Evolution of the Water Snow Line in Magnetically Accreting Protoplanetary Disks
Creators: name: Mori, Shoji
name: Okuzumi, Satoshi
name: Kunitomo, Masanobu
name: Bai, Xue-Ning
Publisher: name: arXiv
Year: 2021
Subjects: subject: Earth and Planetary Astrophysics (astro-ph.EP)
subject: Solar and Stellar Astrophysics (astro-ph.SR)
subject: FOS: Physical sciences

description: The low water content of the terrestrial planets in the solar system suggests that the protoplanets formed within the water snow line. Accurate prediction of the snow line location moving with time provides a clue to constrain the formation process of the planets. In this paper, we investigate the migration of the snow line in protoplanetary disks whose accretion is controlled by laminar magnetic fields, which have been proposed by various nonideal magnetohydrodynamic (MHD) simulations. We propose an empirical model of the disk temperature based on our nonideal MHD simulations, which show that the accretion heating is significantly less efficient than in turbulent disks, and calculate the snow line location over time. We find that the snow line in the magnetically accreting laminar disks moves inside the current Earth's orbit within 1 Myr after star formation, whereas the time for the conventional turbulent disk is much longer than 1 Myr. This result suggests that either the rocky protoplanets formed in such an early phase of the disk evolution, or the protoplanets moved outward to the current orbits after they formed close to the protosun.
description: 17 pages, 12 figures, accepted for publication in ApJ
Akhet Khufu: archaeo-astronomical hints at a common project of the two main pyramids of Giza, Egypt
Creators: name: Magli, Giulio
Publisher: name: arXiv
Year: 2007
Subjects: subject: History and Philosophy of Physics (physics.hist-ph)
subject: FOS: Physical sciences

description: The architectural complexes composed by the two main pyramids of Giza together with their temples are investigated from an inter-disciplinary point of view, taking into account their astronomical alignments as well as their relationships with the visible landscape. Combining already known facts together with new clues, the work strongly supports the idea that the two complexes were conceived as parts of a common project.
description: Archaeoastronomy/History of Astronomy
title: Электротехнология. Ионное упрочнение металлов
Creators: name: ELS IPR BOOKS
Publisher: name: Ай Пи Ар Медиа
Year: 2025

description: В учебном пособии приведены результаты экспериментальных исследований электрофизического эффекта упрочнения поверхностного слоя сталей 40Х5Т, 30ХГСН2А, титана ВТ1-00, сформулированы гипотезы механизмов имплантации ионов азота, углерода, аргона в углеродосодержащей среде. Определены режимы ионной имплантации, обеспечивающие реализацию необходимых структурно-элементных состояний поверхности, что дает возможность прогнозировать, а также целенаправленно управлять характеристиками материалов. Изложение отличает способность авторов описать электрофизический эффект в ионно-легированных металлах, опираясь на компьютерное моделирование. Подготовлено в соответствии с Федеральным государственным образовательным стандартом высшего образования. Учебное пособие предназначено для студентов направления подготовки «Электроэнергетика и электротехника» (профиль «Электротехнические и электротехнологические комплексы и системы»), изучающих дисциплины модуля «Электротехнология», а также будет полезно научным работникам и аспирантам, обучающимся по научной специальности «Электротехнология и электрофизика».
Critical Behaviour of Magnetic Polymers in Two and Three Dimensions
Creators: name: Foster, Damien Paul
name: Majumdar, Debjyoti
Publisher: name: arXiv
Year: 2021
Subjects: subject: Statistical Mechanics (cond-mat.stat-mech)
subject: FOS: Physical sciences

description: We explore the critical behaviour of two and three dimensional lattice models of polymers in dilute solution where the monomers carry a magnetic moment which interacts ferromagnetically with near-neighbour monomers. Specifically, the model explored consists of a self-avoiding walk on a square or cubic lattice with Ising spins on the visited sites. In three dimensions we confirm and extend previous numerical work, showing clearly the first-order character of both the magnetic transition and polymer collapse, which happen together. We present results for the first time in two dimensions, where the transition is seen to be continuous. Finite-size scaling is used to extract estimates for the critical exponents and transition temperature in the absence of an external magnetic field.
description: 15 pages and 28 figures
title: Сборно-монолитное домостроение
Creators: name: ELS IPR BOOKS
Publisher: name: Ай Пи Ар Медиа
Year: 2021

description: В учебнике рассматриваются аспекты развития отечественных и зарубежных систем каркасного сборно-монолитного строительства, излагаются особенности конструктивных и организационно-технологических основ строительства по инновационным системам КУБ, АРКОС, УДС, а также устройства сборно-монолитных конструкций стен и перекрытий с использованием мелкоштучных блоков, панелей и других изделий промышленного производства. Предназначен для обучающихся по программам магистратуры по направлению подготовки 08.04.01 «Строительство», изучающих дисциплину «Современные технологии монолитного и сборно-монолитного строительства». Также будет полезен обучающимся по программам бакалавриата по направлению подготовки 08.03.01 «Строительство», изучающим дисциплину «Монолитное домостроение».
แบบจำลองการฝึกอบรมความรู้ แบบ ดูอัล เฟิร์มมาเมนท์ ขององค์กรฝึกอบรมบุคลากรในภาคตะวันออกเฉียงเหนือของประเทศไทย
Creators: name: กนกอร บุญมี
name: สุทธนู ศรีไสย์
name: ร่มสน นิลพงษ์
Publisher: name: สมาคมนักวิจัย
Year: 2555
Subjects: โมเดลการฝึกอบรม,ดูอัล,เฟิร์มมาเมนท์(Dual firmament),องค์กรฝึกอบรมบุคลากร

description: 1, 17, วารสารสมาคมนักวิจัย
Star Product and Invariant Integration for Lie type Noncommutative Spacetimes
Creators: name: Chryssomalakos, Chryssomalis
name: Okon, Elias
Publisher: name: arXiv
Year: 2007
Subjects: subject: High Energy Physics - Theory (hep-th)
subject: FOS: Physical sciences

description: We present a star product for noncommutative spaces of Lie type, including the so called ``canonical'' case by introducing a central generator, which is compatible with translations and admits a simple, manageable definition of an invariant integral. A quasi-cyclicity property for the latter is shown to hold, which reduces to exact cyclicity when the adjoint representation of the underlying Lie algebra is traceless. Several explicit examples illuminate the formalism, dealing with kappa-Minkowski spacetime and the Heisenberg algebra (``canonical'' noncommutative 2-plane).
description: 21 pages
Geotechnical maps for recommendation on bored pile capacity in Nakhon Ratchasima municipality, Thailand
Creators: name: Suksun Horpibulsuk
name: Avirut Chinkulkijniwat
name: Nunthapon Rathanamanee
name: Nutthachai Prongmanee
name: Cholphatsorn, Arnon
Publisher: name: Maejo University
Year: 2013
Subjects: geotechnical map,Nakhon Ratchasima municipality,standard penetration number,bored pile

description: 2, 7, Maejo International Journal of Science and Technology
Cloning and sequence of cDNA encoding 1-aminocyclo- propane-1-carboxylate oxidase in Vanda flowers
Creators: name: Pattana Srifah Huehne
name: Noppamart Lokkamlue
Publisher: name: Maejo University
Year: 2013
Subjects: 1-aminocyclopropane-1-carboxylate oxidase,Miss Joaquim vanda,vanda orchid,ethylene,flower senescence

description: 2, 7, Maejo International Journal of Science and Technology