cometadata/datacite-rtg-text-other-reclassification-records huggingface dataset:
Logarithmically Regular Morphisms
Creators: name: Molcho, Sam
name: Temkin, Michael
Publisher: name: arXiv
Year: 2019
Subjects: subject: Algebraic Geometry (math.AG)
subject: FOS: Mathematics

description: We consider the stack $\mathcal{L}og_X$ parametrizing log schemes over a log scheme $X$, and weak and strong properties of log morphisms via $\mathcal{L}og_X$, as defined by Olsson. We give a concrete combinatorial presentation of $\mathcal{L}og_X$, and prove a simple criterion of when weak and strong properties of log morphisms coincide. We then apply this result to the study of logarithmic regularity, derive its main properties, and give a chart criterion analogous to Kato's chart criterion of logarithmic smoothness.
description: 19 pages, final version
Nonperturbative methods for calculating the heat kernel
Creators: name: Avramidi, Ivan G.
Publisher: name: arXiv
Year: 1996
Subjects: subject: High Energy Physics - Theory (hep-th)
subject: General Relativity and Quantum Cosmology (gr-qc)
subject: FOS: Physical sciences

description: We study the low-energy approximation for calculation of the heat kernel which is determined by the strong slowly varying background fields in strongly curved quasi-homogeneous manifolds. A new covariant algebraic approach, based on taking into account a finite number of low-order covariant derivatives of the background fields and neglecting all covariant derivatives of higher orders, is proposed. It is shown that a set of covariant differential operators together with the background fields and their low-order derivatives generates a finite dimensional Lie algebra. This algebraic structure can be used to present the heat semigroup operator in the form of an average over the corresponding Lie group. Closed covariant formulas for the heat kernel diagonal are obtained. These formulas serve, in particular, as the generating functions for the whole sequence of the Hadamard-\-Minakshisundaram-\-De~Witt-\-Seeley coefficients in all symmetric spaces.
description: 15 pages, Plain TeX, 42 KB, no figures; Talk given at the Int. Conf. `Global Analysis, Differential Geometry and Lie Algebras', Thessaloniki, Greece, December, 1994; to be published in `Algebras, Groups and Geometries'
Additional file 3 of Trends and projections of kidney cancer incidence at the global and national levels, 1990–2030: a Bayesian age-period-cohort modeling study
Creators: name: Du, Zhebin
name: Chen, Wei
name: Xia, Qier
name: Shi, Oumin
name: Chen, Qi
Publisher: name: figshare
Year: 2020
Subjects: subject: Medicine
subject: Genetics
subject: FOS: Biological sciences
subject: Biotechnology
subject: Environmental Sciences not elsewhere classified
subject: Ecology
subject: Immunology
subject: FOS: Clinical medicine
subject: Biological Sciences not elsewhere classified
subject: Information Systems not elsewhere classified
subject: Mathematical Sciences not elsewhere classified
subject: Developmental Biology
subject: Cancer
subject: Infectious Diseases
subject: FOS: Health sciences
subject: Computational Biology

description: Additional file 3: Table S2. The predicting kidney cancer cases at the national level from 2018 to 2030.
The problem of quantum chaotic scattering with direct processes reduced to the one without
Creators: name: Gopar, Victor A.
name: Mello, Pier A.
Publisher: name: arXiv
Year: 1997
Subjects: subject: Chaotic Dynamics (nlin.CD)
subject: Condensed Matter (cond-mat)
subject: FOS: Physical sciences

description: We show that the study of the statistical properties of the scattering matrix S for quantum chaotic scattering in the presence of direct processes (charaterized by a nonzero average S matrix ) can be reduced to the simpler case where direct processes are absent ( = 0). Our result is verified with a numerical simulation of the two-energy autocorrelation for two-dimensional S matrices. It is also used to extend Wigner's time delay distribution for one-dimensional S matrices, recently found for = 0, to the case not equal to zero; this extension is verified numerically. As a consequence of our result, future calculations can be restricted to the simpler case of no direct processes.
description: 9 pages (Latex) and 1 EPS figure. Submitted to Europhysics Letters. The conjecture proposed in the previous version is proved; thus the present version contains a more satisfactory presentation of the problem
The Sussex Catholics c. 1660-1800
Creators: name: Caplan, N
Publisher: name: Archaeology Data Service
Year: 2021

description: Sussex Archaeological Collections, 116, 19-30
description: This paper considers the likely numerical strength and geographic distribution of the Roman Catholics in Sussex and offers an explanation of the distribution pattern. A comprehensive study of the Sussex Catholics in the seventeenth and eighteenth centuries is long overdue but this limited study may be helpful in the meantime particularly to local historians who wish to examine the aspect of religious dissent in their areas of study.
Close companions around young stars
Creators: name: Kounkel, Marina
name: Covey, Kevin
name: Moe, Maxwell
name: Kratter, Kaitlin M.
name: Suárez, Genaro
name: Stassun, Keivan G.
name: Román-Zúñiga, Carlos
name: Hernandez, Jesus
name: Kim, Jinyoung Serena
name: Ramírez, Karla Peña
name: Roman-Lopes, Alexandre
name: Stringfellow, Guy S
name: Jaehnig, Karl O
name: Borissova, Jura
name: Tofflemire, Benjamin
name: Krolikowski, Daniel
name: Rizzuto, Aaron
name: Kraus, Adam
name: Badenes, Carles
name: Longa-Peña, Penélope
name: Chew, Yilen Gómez Maqueo
name: Barba, Rodolfo
name: Nidever, David L.
name: Brown, Cody
name: De Lee, Nathan
name: Pan, Kaike
name: Bizyaev, Dmitry
name: Oravetz, Daniel
name: Oravetz, Audrey
Publisher: name: arXiv
Year: 2019
Subjects: subject: Solar and Stellar Astrophysics (astro-ph.SR)
subject: Astrophysics of Galaxies (astro-ph.GA)
subject: FOS: Physical sciences

description: Multiplicity is a fundamental property that is set early during stellar lifetimes, and it is a stringent probe of the physics of star formation. The distribution of close companions around young stars is still poorly constrained by observations. We present an analysis of stellar multiplicity derived from APOGEE-2 spectra obtained in targeted observations of nearby star-forming regions. This is the largest homogeneously observed sample of high-resolution spectra of young stars. We developed an autonomous method to identify double lined spectroscopic binaries (SB2s). Out of 5007 sources spanning the mass range of $\sim$0.05--1.5 \msun, we find 399 binaries, including both RV variables and SB2s. The mass ratio distribution of SB2s is consistent with a uniform for $q<0.95$ with an excess of twins with $q>0.95$. The period distribution is consistent with what has been observed in close binaries ($<10$ AU) in the evolved populations. Three systems are found to have $q\sim$0.1, with a companion located within the brown dwarf desert. There are not any strong trends in the multiplicity fraction (MF) as a function of cluster age from 1 to 100 Myr. There is a weak dependence on stellar density, with companions being most numerous at $Σ_*\sim30$ stars/pc$^{-2}$, and decreasing in more diffuse regions. Finally, disk-bearing sources are deficient in SB2s (but not RV variables) by a factor of $\sim$2; this deficit is recovered by the systems without disks. This may indicate a quick dispersal of disk material in short-period equal mass systems that is less effective in binaries with lower $q$.
description: 25 pages, 20 figures. Accepted to AJ
Drosophila bipolita Hardy 1965
Creators: name: Rampasso, Augusto Santos
name: O'Grady, Patrick Michael
Publisher: name: Zenodo
Year: 2022
Subjects: Biodiversity
Taxonomy
Fungi
Basidiomycota
Agaricomycetes
Agaricales
Psathyrellaceae
Drosophila
Drosophila bipolita

description: Drosophila bipolita Hardy, 1965
Distribution: Endemic: Hawaii, Maui, Oahu
 Additional References: Hardy et al. (2001); Heed (1968); Leblanc et al. (2013); O’Grady & Zilversmit (2004); Throckmorton (1966)
description: Published as part of Rampasso, Augusto Santos & O'Grady, Patrick Michael, 2022, Distribution and Taxonomy of Endemic and Introduced Drosophilidae in Hawaii, pp. 1-80 in Zootaxa 5106 (1) on page 38, DOI: 10.11646/zootaxa.5106.1.1, http://zenodo.org/record/6336841
Investigating the Role of the Amyloid Precursor Protein in the Pathogenesis of Alzheimer's Disease
Creators: Lefort, Roger
Publisher: name: Columbia University
Year: 2011
Subjects: subject: Neurosciences
subject: FOS: Clinical medicine
subject: Molecular biology

description: Alzheimer's disease (AD) is the most prevalent neurodegenerative disorder characterized by a progressive loss of cognition. Histopathologically, AD is defined by the presence of two lesions, senile plaques (SP) and neurofibrillary tangles (NFT), which result from the accumulation and deposition of the amyloid-β peptide (Aβ) and the aggregation of hyperphosphorylated tau protein, respectively. Aβ is formed upon sequential cleavage of the amyloid precursor protein (APP) by β- and γ-secretases and is secreted extracellularly. The accumulation of extracellular Aβ is thought to initiate a pathogenic cascade resulting in synaptic dysfunction in neurons, followed by the their eventual demise through apoptosis. However, while Aβ has been shown to be increased in AD patients' brains, little is known about how the cleavage of APP and the subsequent generation of Aβ is influenced or if the cleavage process changes over time. Moreover, while the effects of Aβ on neurons are known, the exact mechanism remains unclear. Many have postulated that Aβ exerts its effects by binding a putative receptor, but the search for an Aβ receptor has so far remained inconclusive. Interestingly, one of the proposed potential receptor for Aβ is APP itself. In this model, soluble oligomeric Aβ binds cell-surface APP, inducing its dimerization leading to all the downstream effects of Aβ in cells -- e.g. cell death and/or synaptic dysfunction. Moreover, it has been proposed that Aβ can promote its own production in neurons, thereby initiating a pathogenic loop. However, isolating Aβ-induced APP signaling has remained challenging due to the promiscuous nature of Aβ binding. To work around this problem, we used an antibody-mediated approach to artificially trigger the dimerization of cell-surface APP in cells. We found that dimerization of APP could recapitulate all of the effects of oligomeric Aβ in hippocampal neurons, triggering neuronal death at high concentrations and interfering with normal synaptic functions low concentrations. We also found that dimerization of APP is sufficient to promote the amyloidogenic pathway, by increasing levels of the β-secretase BACE1, resulting in increased Aβ production. Finally, we found that dimerization of APP triggered caspase-dependent cleavage of APP and the formation of a second neurotoxic fragment, termed C31, which also mimics the effects of Aβ in hippocampal neurons. Taken together, our data provides support for the occurrence of a positive pathogenic feedback loop involving Aβ, APP and C31 in neurons.
Perturbation of the equilibrium for a totally asymmetric stick process in one dimension
Creators: name: Seppalainen, Timo
Publisher: name: arXiv
Year: 1999
Subjects: subject: Probability (math.PR)
subject: Mathematical Physics (math-ph)
subject: FOS: Mathematics
subject: FOS: Physical sciences
subject: 60K35; 82C22

description: We study the evolution of a small perturbation of the equilibrium of a totally asymmetric one-dimensional interacting system. The model we take as example is Hammersley's process as seen from a tagged particle, which can be viewed as a process of interacting positive-valued stick heights on the sites of Z. It is known that under Euler scaling (space and time scale n) the empirical stick profile obeys the Burgers equation. We refine this result in two ways: If the process starts close enough to equilibrium, then over times n^νfor 1\leν<3, and up to errors that vanish in hydrodynamic scale, the dynamics merely translates the initial stick configuration. A time evolution for the perturbation is visible under a particular family of scalings: over times n^ν, 1
How Martian araneiforms get their shapes: morphological analysis and diffusion-limited aggregation model for polar surface erosion
Creators: name: Portyankina, Ganna
name: Hansen, Candice J.
name: Aye, Klaus-Michael
Publisher: name: arXiv
Year: 2019
Subjects: subject: Earth and Planetary Astrophysics (astro-ph.EP)
subject: FOS: Physical sciences

description: Araneiforms are radially converging systems of branching troughs exhibiting fractal properties. They are found exclusively in the Southern polar regions of Mars and believed to be result of multiple repetitions of cold CO2 gas jets eruptions. Araneiform troughs get carved by the overpressurized gas rushing underneath a seasonal ice layer towards a newly created opening. Current work is an attempt to quantitatively analyze araneiforms patterns and model their formation mechanism. The dendritic quality of most araneiforms are suggestive that they can be described in terms commonly applied to terrestrial rivers. We have adapted and for the first time applied to Martian araneiforms qualitative morphological analysis typically used for terrestrial rivers. We have shown that the large and well-developed araneiforms (with tributary orders larger than 4) closely follow Horton's law of tributary orders and have bifurcation ratio that falls well inside the range of terrestrial rivers. We have implemented a two-dimensional Diffusion-Limited Aggregation (DLA) model that describes formation of dendrite shapes by mathematical probabilistic means. We compared modeled dendrite shapes to the araneiform shapes observed in the Martian polar regions and evaluated their similarity using the morphological analysis of araneiforms. We showed that DLA model can successfully recreate 2D shapes of different observed araneiforms. Modeling the creation of araneiform patterns with DLA leads to better understanding of seasonal processes that create them.
Investigating the Role of ILDR2 in Hepatic Lipid Metabolism and Pancreas Islet Function
Creators: Millings, Elizabeth Joy
Publisher: name: Columbia University
Year: 2017
Subjects: subject: Biology
subject: Genetics
subject: FOS: Biological sciences
subject: Nutrition
subject: Metabolic syndrome
subject: Islands of Langerhans

description: Metabolic syndrome defines a cluster of related comorbidities including obesity, Type 2 diabetes, fatty liver disease, and cardiovascular diseases. Increasingly prevalent in Western countries, metabolic syndrome diseases are a major focus of efforts to understand the complex genetics that underlie disease risk and severity. Immunoglobulin domain-containing receptor 2 (ILDR2) is an ER transmembrane protein first identified as a candidate genetic modifier of diabetes susceptibility in the context of obesity. Obese, leptin-deficient mice with hypomorphic Ildr2 expression had hypoinsulinemic hyperglycemia with reduced beta cell mass, suggesting that ILDR2 plays a role in maintain beta cell mass and function. Further studies proposed a role for ILDR2 in hepatic lipid metabolism as Ildr2 shRNA-mediated knockdown (KD) caused hepatic steatosis in mice. The goal of this thesis work is to clarify the role of ILDR2 in diabetes and hepatic steatosis in an effort to elucidate the specific mechanism of ILDR2.
      We developed a conditional Ildr2 knockout (KO) allele, enabling tissue-specific ablation in mice. Liver-specific and hepatocyte-specific KO mice did not develop hepatic steatosis. However, liver-specific KO mice treated with adenoviral Ildr2 shRNA accumulated hepatic triglycerides, suggesting off-target effects of the shRNA. Using RNA sequencing and sequence alignment, several gene candidates for shRNA off-targeting effect were identified. Future studies are proposed to elucidate role(s) of these genes in the previously described phenotype of Ildr2 KD mice. I conclude that Ildr2 ablation may contribute to the development of hepatic steatosis, but does not play a major role in hepatic lipid metabolism.
      We also developed beta cell-specific (RIP2-cre) and pancreas-specific (Pdx-cre) Ildr2 KO mice and characterized them for diabetic phenotypes. Pancreas-specific KO mice displayed impaired glucose tolerance, reduced insulin secretion and decreased calcium signaling in islets. These results confirm a role for ILDR2 in islet cell function. Experiments performed in RIP2-cre beta cell-specific KO mice were confounded by effects of the Cre construct, prohibiting definitive conclusions about the role of ILDR2 in the beta cell. Additionally, because Ildr2 is expressed at low levels in beta cells, we propose that ILDR2 may function in islet macrophages.
      Overall, this work defines the metabolic functions of ILDR2, clarifying its role in hepatic lipid metabolism, and confirming its role in islet cell function. In addition, I discuss preliminary evidence suggesting that ILDR2 may function in the brain to regulate body weight and metabolism.
A New Test of Inflation
Creators: name: Hu, Wayne
name: White, Martin
Publisher: name: arXiv
Year: 1996
Subjects: subject: Astrophysics (astro-ph)
subject: General Relativity and Quantum Cosmology (gr-qc)
subject: High Energy Physics - Phenomenology (hep-ph)
subject: FOS: Physical sciences

description: We discuss a new test of inflation from the harmonic pattern of peaks in the cosmic microwave background radiation angular power spectrum. By characterizing the features of alternate models and revealing signatures essentially unique to inflation, we show that inflation could be validated by the next generation of experiments.
description: 5pgs, revtex, 2 figs.; minor revisions reflect published version; supporting material at http://www.sns.ias.edu/~whu
Crop price comovements during extreme market downturns
Creators: name: Zimmer, David M.
name: Zimmer, David M.
Publisher: name: Unknown
Year: 2015
Subjects: subject: Crop Production/Industries
subject: Demand and Price Analysis
subject: Marketing
subject: FOS: Economics and business
subject: Clayton
subject: finite mixture
subject: latent class
subject: structured finance

description: This study develops and estimates mixture models of crop price comovements using copula functions, which allow for departures from normality during extreme market circumstances. The models also account for unique time-series patterns inherent in crop price data. The results point to two main conclusions. First, mixture models appear to provide an easy-to-estimate approach for capturing real-life crop price movements. Second, mixture models find that, during extreme market downswings, correlations in price movements strengthen by several orders of magnitude. These results suggest that structured securities assembled from different crops tend to lose diversified protection during extreme market downswings, the exact times when such protection is needed most.
Wivelsfield, History of the Parish of. Part 2 (including: 6 Parochial Records. 7 Ecclesiastical. 8 The Incumbents, and 9 inscrptions in the Church) (Corrections to Part 1 of the History of Wivelsfield) (see Vol. 35., pages 1-60)
Creators: name: Attree, F W T
Publisher: name: Archaeology Data Service
Year: 2021

description: Sussex Archaeological Collections, 36, 19-74
Otevřená výzkumná data: Jak se vypořádat s replikační krizí
Creators: name: Hanzlíková, Dagmar
name: Janíček, Milan
Publisher: name: Zenodo
Year: 2021
Subjects: open data
data sharing
reproducibility crisis
journal data policy
replikační krize
sdílení dat
otevřená výzkumná data

description: Prezentace přednášky ze školení Jak podporovat open science Anotace:  Jedním z pilířů důvěryhodného a reprodukovatelného výzkumu je sdílení výzkumných dat. Tato přednáška představí principy otevřených výzkumných dat, proč je dobré data sdílet a jak tomu může systém podpory vědy pomoci, a také se podíváme na co si při sdílení dát pozor. Během přednášky se seznámíte s různými způsoby sdílení výzkumných dat a podrobněji se budeme věnovat datovým repozitářům. Na závěr se budeme věnovat možným úskalím při sdílení výzkumných dat a jak jim předcházet. Pořadatel: Centrum pro podporu open science, Univerzita Karlova Stránky akce: https://openscience.cuni.cz/OSCI-126.html
description: Podpořeno projektem OP VVV Rozvoj kapacit pro výzkum a vývoj UK II, reg. č.: CZ.02.2.69/0.0/0.0/18_054/0015222.
Investigating the combined effects of rater expertise, working memory capacity, and cognitive functionality on the scoring of second language speaking performance
Creators: Han, Qie
Publisher: name: Columbia University
Year: 2020
Subjects: Language and languages
Education
Cognitive psychology
Second language acquisition--Research
Memory

description: In L2 performance assessment, raters can significantly affect test validity due to rater variability, a source of construct-irrelevant variance in scores caused by differences in raters’ characteristics rather than test takers’ ability. To improve scoring validity, we must investigate what rater characteristics are likely to contribute to rater variability. The current study thus investigated the combined effects of three major rater characteristics, i.e., rater expertise, working memory capacity (WMC), and cognitive functionality, on raters’ scoring performance in L2 speaking assessment. Exploring these questions may increase our understanding of what rater-associated factors contribute to rater variability, thereby shedding light on rater selection, training, and scoring practices. To this end, 90 raters from the US and the UK participated in two parts of the study. In Part I, the 90 raters completed a rater background survey designed to measure their L2 performance assessment-related experience, scored 27 responses from the Aptis speaking test, and completed one verbal working memory task. Hierarchical regression analyses were conducted to explore: 1) the relative contributions of rater expertise and WMC to scoring performance, and 2) any possible interaction between the two characteristics in their joint influences on scoring performance. Results from the analysis indicate that rater expertise had a significant effect on raters’ scoring accuracy. However, WMC was not found to significantly influence raters’ scoring performance. In addition, no significant interaction was found between rater expertise and WMC, which suggests independent influences of these two characteristics on scoring performance. In Part II, six out of the 90 raters were randomly selected to participate in a cognitive lab session, where they scored three Aptis spoken responses and verbally reported their thinking process during scoring. The raters’ reports were coded and analyzed based on a hypothesized taxonomy of rater strategies invoked in the L2 scoring process. Fourteen major strategies were identified from the raters’ verbal reports. Differences were also found in the expert and novice raters’ quantity and quality of strategy use. These findings have revealed the mental mechanisms underlying raters’ scoring performance and associated differences in the raters’ strategy use to different levels of rater expertise.
Chasing Accreted Structures within Gaia DR2 using Deep Learning
Creators: name: Necib, Lina
name: Ostdiek, Bryan
name: Lisanti, Mariangela
name: Cohen, Timothy
name: Freytsis, Marat
name: Garrison-Kimmel, Shea
Publisher: name: arXiv
Year: 2019
Subjects: subject: Astrophysics of Galaxies (astro-ph.GA)
subject: Cosmology and Nongalactic Astrophysics (astro-ph.CO)
subject: FOS: Physical sciences

description: In previous work, we developed a deep neural network classifier that only relies on phase-space information to obtain a catalog of accreted stars based on the second data release of Gaia (DR2). In this paper, we apply two clustering algorithms to identify velocity substructure within this catalog. We focus on the subset of stars with line-of-sight velocity measurements that fall in the range of Galactocentric radii $r \in [6.5, 9.5]$ kpc and vertical distances $|z| < 3$ kpc. Known structures such as Gaia Enceladus and the Helmi stream are identified. The largest previously-unknown structure, Nyx, is a vast stream consisting of at least 90 stars in the region of interest. This study displays the power of the machine learning approach by not only successfully identifying known features, but also discovering new kinematic structures that may shed light on the merger history of the Milky Way.
description: 15 + 13 pages, 9 + 15 figures. v2: Minor changes in calculating probabilities to belong to a kinematic structure. Conclusions unchanged
Helicity Transfer in Turbulent Models
Creators: name: Biferale, L.
name: Pierotti, D.
name: Toschi, F.
Publisher: name: arXiv
Year: 1997
Subjects: subject: Chaotic Dynamics (nlin.CD)
subject: FOS: Physical sciences

description: Helicity transfer in a shell model of turbulence is investigated. We show that a Reynolds-independent helicity flux is present in the model when the large scale forcing breaks inversion symmetry. The equivalent in Shell Models of the ``2/15 law'', obtained from helicity conservation in Navier-Stokes eqs., is derived and tested. The odd part of helicity flux statistic is found to be dominated by a few very intense events. In a particular model, we calculate analytically leading and sub-leading contribution to the scaling of triple velocity correlation.
description: 4 pages, LaTex, 2 figures
استقرار الزامات مدیریت دانش در فرآیندها نظام‌وظیفه و سازمان‌های نظامی و ادارات تابعه مرتبط با نیروی سرباز
Creators: name: AmirMohammad Abhary
Publisher: name: figshare
Year: 2019
Subjects: Uncategorized

description: امروزه دانش از هر ماده معدنی و ذخیره طبیعی نیز ارزشمندتر تلقی می‌شود و جنگ دنیا، جنگ بر سر داده و دانش است. نمی‌توانیم دنیایی را تصور کنیم که در آن داده و حکمرانی داده وجود نداشته باشد. متأسفانه علی‌رغم وجود خیل عظیمی از داده‌ها و دانش‌های موردنیاز برای برنامه‌ریزی و بهبود فرآیندها مدیریت نیروی سرباز در سامانه‌ها و ذهن کارشناسان سازمان‌های دخلی، به دلیل عدم بهره‌برداری از این اطلاعات مفید به نحو احسن و همچنین نبود الزامات استقرار مدیریت دانش در این سازمان‌ها، شاهد آن هستیم که استعدادها و ایده‌ها به بهره‌برداری نمی‌رسند و مشکلاتی که به‌راحتی می‌توانند بر پایه وجود داده‌های مفید قبلی مرتفع شوند همچنان سال‌های سال است که باقی مانده‌اند.
Periodic cyclic homology as sheaf cohomology
Creators: name: Cortiñas, Guillermo
Publisher: name: arXiv
Year: 1998
Subjects: subject: K-Theory and Homology (math.KT)
subject: Algebraic Geometry (math.AG)
subject: Category Theory (math.CT)
subject: Quantum Algebra (math.QA)
subject: FOS: Mathematics
subject: 19D55 (Primary) 18F10 (Secondary)

description: We study a noncommutative version of the infinitesimal site of Grothendieck. A theorem of Grothendieck establishes that the cohomology of the structure sheaf on the infinitesimal topology of a scheme of characteristic zero is de Rham cohomology. We prove that, for the noncommutative infinitesimal topology of an associative algebra over a field of characteristic zero, the cohomology of the structure sheaf modulo commutators is periodic cyclic cohomology. We also compute the noncommutative infinitesimal cohomology of other sheaves. For example we show that hypercohomology with coefficients in $K$-theory gives the fiber of the Jones-Goodwillie character which goes from $K$-theory to negative cyclic homology.
description: 23 pages, AmsTeX
A Middle-Saxon Iron Smelting Site at Millbrook, Ashdown Forest, Sussex
Creators: name: Tebbutt, C F
Publisher: name: Archaeology Data Service
Year: 2021

description: Sussex Archaeological Collections, 120, 20-35
description: Pipe laying on Ashdown Forest revealed an iron-working site dated by associated pottery to the Saxon period and by archaeomagnetism and radiocarbon dating to the ninth century. A bowl furnace, hearths and slag heap were excavated as a rescue operation. Materials from the site were examined metallurgically. The significance of the site in the context of Saxon ironworking technology, pottery, and penetration fo the Weald is discussed.
Drosophila furva Hardy 1965
Creators: name: Rampasso, Augusto Santos
name: O'Grady, Patrick Michael
Publisher: name: Zenodo
Year: 2022
Subjects: Biodiversity
Taxonomy
Fungi
Basidiomycota
Agaricomycetes
Agaricales
Psathyrellaceae
Drosophila
Drosophila furva

description: Drosophila furva Hardy, 1965
Distribution: Endemic: Maui
Additional References: Magnacca & O’Grady (2009)
description: Published as part of Rampasso, Augusto Santos & O'Grady, Patrick Michael, 2022, Distribution and Taxonomy of Endemic and Introduced Drosophilidae in Hawaii, pp. 1-80 in Zootaxa 5106 (1) on page 41, DOI: 10.11646/zootaxa.5106.1.1, http://zenodo.org/record/6336841
Testing market integration for Japanese retail seafood markets
Creators: name: Aruga, Kentaka
name: Li, Raymond
name: Aruga, Kentaka
name: Li, Raymond
Publisher: name: Unknown
Year: 2015
Subjects: subject: Livestock Production/Industries
subject: Marketing
subject: FOS: Economics and business
subject: convergence test
subject: Granger causality
subject: Japanese retail seafood market
subject: market integration

description: Although Japan is one of the largest seafood-consuming countries, with various types of seafood products traded throughout the nation, few studies have explored how this market is integrated from the aspect of market price. Because Japanese consumers in different regions have different preferences for seafood, we focused our study to see how the regional seafood retail markets (Tokyo, Osaka, Nagoya, Sapporo, and Fukuoka) are integrated for 10 major seafood products (horse mackerel, short-necked clams, yellowtail, scallops, cuttlefish/squid, flounder, tuna, mackerel, saury, and octopus) consumed in Japan. We applied the relatively new Phillips–Sul convergence test for our analysis. For most of the seafood products investigated in this study, our results indicate that the Japanese regional seafood markets cannot be integrated as a whole and that marketing strategies need to consider the peculiar characteristics of the regional seafood markets.
Resource Allocation Mechanism for Media Handling Services in Cloud Multimedia Conferencing
Creators: name: Soltanian, Abbas
name: Naboulsi, Diala
name: Glitho, Roch
name: Elbiaze, Halima
Publisher: name: arXiv
Year: 2019
Subjects: subject: Multimedia (cs.MM)
subject: Networking and Internet Architecture (cs.NI)
subject: FOS: Computer and information sciences

description: Multimedia conferencing is the conversational exchange of multimedia content between multiple parties. It has a wide range of applications (e.g., Massively Multiplayer Online Games (MMOGs) and distance learning). Media handling services (e.g., video mixing, transcoding, and compressing) are critical to multimedia conferencing. However, efficient resource usage and scalability still remain important challenges. Unfortunately, the cloud-based approaches proposed so far have several deficiencies in terms of efficiency in resource usage and scaling, while meeting Quality of Service (QoS) requirements. This paper proposes a solution which optimizes resource allocation and scales in terms of the number of participants while guaranteeing QoS. Moreover, our solution composes different media handling services to support the participants' demands. We formulate the resource allocation problem mathematically as an Integer Linear Programming (ILP) problem and design a heuristic for it. We evaluate our proposed solution for different numbers of participants and different participants' geographical distributions. Simulation results show that our resource allocation mechanism can compose the media handling services and allocate the required resources in an optimal manner while honoring the QoS in terms of end-to-end delay.
description: 14 pages, 14 figures, IEEE Journal on Selected Areas in Communications (JSAC)
Preheating and symmetry restoration in collisions of vacuum bubbles
Creators: name: Kolb, Edward W.
name: Riotto, Antonio
Publisher: name: arXiv
Year: 1996
Subjects: subject: Astrophysics (astro-ph)
subject: General Relativity and Quantum Cosmology (gr-qc)
subject: High Energy Physics - Phenomenology (hep-ph)
subject: FOS: Physical sciences

description: In first-order inflation a phase transition is completed by the collisions of expanding true-vacuum bubbles. If bubble collisions produce large numbers of soft scalar particles carrying quantum numbers associated with a spontaneously broken symmetry, then symmetry restoration may occur in a ``pre-heating'' phase in a manner similar to symmetry restoration in the pre-heating phase of slow-roll inflation. Since bubble collisions lead to inhomogeneities, there is the possibility of inhomogeneous symmetry restoration where restoration occurs only in the regions of wall collisions.
description: 12 page LaTeX file; no special macros needed; no figures
title: SPAR Service-based Personal Activity Recognition for Mobile Phones
Creators: name: Berchtold, Martin
name: Budde, Matthias
name: Gordon, Dawud
name: Schmidtke, Hedda
name: Beigl, Michael
Publisher: name: Universitätsbibliothek Braunschweig
Year: 2010
Subjects: subject: 004

description: Smart phones have become powerful platforms for mobile communication and applications. This paper presents basic technology that will enable the phone to extend such applications with context awareness under realistic conditions. Recognition is carried out by a service-based context recognition architecture which creates an evolving classification system based on feedback from the user community. The approach uses classifiers based on fuzzy inference systems which use live annotation to personalize the classifier instance on the device to the its user. Our recognition system is designed for everyday use: it is independent of placement (no assumed or fixed position), requires only very little (1-3 minutes per activity) personalization effort from the user and can detect a high number of activities. The results demonstrate the ability of the system to use personalization and the user community as forces for optimization, achieving classification rates upwards of 97% for 10 classes in an evaluation with 20 users and over 500 minutes of data.
Controlling Physical Systems with Symmetries
Creators: name: Grigoriev, R. O.
name: Cross, M. C.
Publisher: name: arXiv
Year: 1997
Subjects: subject: Chaotic Dynamics (nlin.CD)
subject: FOS: Physical sciences

description: Symmetry properties of the evolution equation and the state to be controlled are shown to determine the basic features of the linear control of unstable orbits. In particular, the selection of control parameters and their minimal number are determined by the irreducible representations of the symmetry group of the linearization about the orbit to be controlled. We use the general results to demonstrate the effect of symmetry on the control of two sample physical systems: a coupled map lattice and a particle in a symmetric potential.
description: 6 pages
Drosophila fuscoamoeba Bryan 1934
Creators: name: Rampasso, Augusto Santos
name: O'Grady, Patrick Michael
Publisher: name: Zenodo
Year: 2022
Subjects: Biodiversity
Taxonomy
Fungi
Basidiomycota
Agaricomycetes
Agaricales
Psathyrellaceae
Drosophila
Drosophila fuscoamoeba

description: Drosophila fuscoamoeba Bryan, 1934
Distribution: Endemic: Oahu
 Additional References: Hardy (1965); Magnacca et al. (2008); Magnacca & O’Grady (2009); O’Grady et al. (2011)
description: Published as part of Rampasso, Augusto Santos & O'Grady, Patrick Michael, 2022, Distribution and Taxonomy of Endemic and Introduced Drosophilidae in Hawaii, pp. 1-80 in Zootaxa 5106 (1) on page 42, DOI: 10.11646/zootaxa.5106.1.1, http://zenodo.org/record/6336841
اصلاح قانون‌های حمایتی کسری سربازی در دوران دانش‌آموزی با هدف نیازهای مهارتی کشور
Creators: name: AmirMohammad Abhary
Publisher: name: figshare
Year: 2019
Subjects: Uncategorized

description: درحالی‌که طیف وسیعی از حمایت‌های کسری و جایگزین خدمت برای دانشجویان مقاطع مختلف و فارغ‌التحصیلان دانشگاهی در نظر گرفته شده است، اما برای دانش آموزان علی‌الخصوص در بخش فنی و حرفه‌ای این حمایت‌ها انگشت‌شمار است و آن تعداد هم بیش‌تر ناظر به توانمندی‌های المپیادی و آزمونی افراد است تا جنبه عملیاتی آنان. می‌توان با اصلاح این قوانین و توجه بیش‌تر به حوزه فنی و حرفه‌ای انگیزه خدمتی را افزایش و همچنین اشتغال پایدار را توسعه داد.
title: Sexuelle Belästigung am Arbeitsplatz
title: Gewalt im Geschlechterverhältnis
titleType: Subtitle
Creators: name: Gamsjäger, Manuela
Publisher: name: Humboldt-Universität zu Berlin
Year: 2010
Subjects: subject: Sexuelle Belästigung
subject: Gewalt
subject: Gender
subject: Macht
subject: Diskriminierung
subject: Arbeit
subject: 303 Gesellschaftliche Prozesse

description: Sexuelle Belästigung ist nach wie vor zentraler Bestandteil der Diskriminierungs- und Gewalterfahrungen von Frauen und Männern im Arbeitsleben. Der Beitrag diskutiert sexuelle Belästigung im Kontext sexueller Gewalt und ist im Schnittpunkt von Arbeits-, Organisations- und Geschlechterforschung angesiedelt. Ausgehend von der theoretischen Diskussion über das hierarchische Geschlechterverhältnis als Basis für sexuelle Belästigung werden, anknüpfend an empirische Ergebnisse, mögliche Motive für Täterinnen und Täter diskutiert. Zudem werden Strukturen und Funktionen von sexueller Belästigung innerhalb des Systems der hierarchischen Zweigeschlechtlichkeit herausgearbeitet, das in das soziale Feld der Organisation bzw. Arbeitswelt übertragen wird.
description: Sexual Harassment at the Workplace. Gender-Based Violence Sexual harassment is part and parcel of discri- mination and violent experiences of women and men at the workplace. Therefore the article discusses sexual harassment in the context of sexual violence and is placed at the intersection of gender, work, and organisation. Based on a theoretical discussion about the hierarchical gender system the article focuses on different motives of male and female harassers by elaborating structures and functions of sexual harassment which produce and reproduce this hierarchical system, which is carried into the field of organisation and working environment, respectively.
اعطای کسر از خدمت به دانشجویان مقطع کارشناسی از طریق انجام پروژه مصوب درسی در راستای رفع نیازهای نیروهای مسلح
Creators: name: AmirMohammad Abhary
Publisher: name: figshare
Year: 2019
Subjects: Uncategorized

description: توجه خوب و اصلاحی نسبی قانون سربازی در سال‌های اخیر این امکان را به افراد متخصص و دانشجویان فارغ‌التحصیلان مقطع تحصیلات تکمیلی داده است تا بتوانند از زمان سپری‌شده جهت فراگیری تحصیلات خود به نحو احسن استفاده نمایند؛ اما کماکان حمایت از دانشجویان و فارغ‌التحصیلان کارشناسی مورد بحث است. به نظر می‌رسد این قانون تا حدی نیاز به بازنگری و تسهیل برنامه‌های حمایتی از آنان دارد.
Investigating the role of the RNA binding protein TDP-43 in Amyotrophic Lateral Sclerosis using animal and cell-based models of disease
Creators: Lehrer, Helaina
Publisher: name: Columbia University
Year: 2015
Subjects: subject: Molecular biology
subject: Neurosciences
subject: FOS: Clinical medicine
subject: Biochemistry

description: TDP43 is an RNA and DNA binding protein that has been shown to play an integral role in disease mechanisms that underlie ALS. In fact, a common feature of the vast majority of ALS cases is the presence of TDP-43 aggregates in postmortem tissue from the brain and spinal cord. This finding has spurred research to understand the physiological roles of TDP-43 in the absence of disease, and how these roles are affected by disease. Current TDP-43 mouse models fail to faithfully and reproducibly recapitulate key aspects of ALS, possibly due to the transgenic approaches used. To address these concerns, we generated a targeted, conditional mouse model, and embryonic stem cell lines expressing either human WT or M337V mutant TDP-43 at equivalent levels. We show that expression of mutant hTDP-43 in mice with a mixed genetic background leads to selective motor neuron loss, muscle weakness and premature death. However this disease phenotype is not observed with the same TDP43 mutation in a pure Bl6 background. We next sought to identify alterations in the biochemistry of the mutant protein that may underlie its toxicity, such as its interactions with RNA and protein. By creating a library of RNAs bound by TDP-43 in the mouse spinal cord, we found that the M337V mutation does not compromise the ability of TDP43 to bind to target mRNA transcripts, although the mutation does lead to changes in expression of genes known to be involved in inflammation. In addition, we identified 22 proteins that bind to TDP43 in an RNA-dependent manner, and found that the M337V mutation does not alter these interactions. This work establishes novel mouse and cellular models that provide insights into the functions of normal and ALS-causing mutant TDP43 protein.
Second Order Perturbations of Flat Dust FLRW Universes with a Cosmological Constant
Creators: name: Mena, Felipe C.
name: Tavakol, Reza
name: Bruni, Marco
Publisher: name: arXiv
Year: 2002
Subjects: subject: General Relativity and Quantum Cosmology (gr-qc)
subject: Astrophysics (astro-ph)
subject: High Energy Physics - Theory (hep-th)
subject: FOS: Physical sciences

description: We summarize recent results concerning the evolution of second order perturbations in flat dust irrotational FLRW models with $Λ\ne 0$. We show that asymptotically these perturbations tend to constants in time, in agreement with the cosmic no-hair conjecture. We solve numerically the second order scalar perturbation equation, and very briefly discuss its all time behaviour and some possible implications for the structure formation.
description: 6 pages, 1 figure. to be published in "Proceedings of the 5th Alexander Friedmann Seminar on Gravitation and Cosmology", Int. Journ. Mod. Phys. A (2002). Macros: ws-ijmpa.cls, ws-p9-75x6-50.cls
Investigating the role of ubiquitin in endosomal sorting and processing of amyloid precursor protein
Creators: Williamson, Rebecca Lynn
Publisher: name: Columbia University
Year: 2017
Subjects: subject: Amyloid beta-protein precursor
subject: Ubiquitin
subject: Endosomes
subject: Nervous system--Diseases
subject: Amyloid beta-protein
subject: Neurosciences
subject: FOS: Clinical medicine
subject: Pathology
subject: Molecular biology

description: Amyloid plaques, a neuropathological hallmark of Alzheimer’s disease (AD), are largely composed of amyloid beta (Aβ) peptide, derived from cleavage of amyloid precursor protein (APP) by β- and γ-secretase. The endosome is increasingly recognized as an important crossroads for APP and the secretases, with major implications for APP processing and amyloidogenesis. Amongst various posttranslational modifications affecting APP, ubiquitination of cytodomain lysines may represent a key signal controlling endosomal sorting. Here, we show that substitution of APP COOH-terminal lysines with arginines disrupts APP ubiquitination, though the pool of ubiquitinated APP is small or transient. Nonetheless, this small deficiency in ubiquitination can have a significant impact on APP, such that the number of lysines mutated trends toward an increase in APP metabolism. An APP mutant lacking all COOH-terminal lysines undergoes the most pronounced increase in processing, leading to accumulation of both secreted and intracellular Aβ40, without change in Aβ42. This phenotype is abolished by artificial ubiquitination of APP using rapalog-mediated proximity inducers. Lack of APP COOH-terminal lysines does not affect APP endocytosis, but leads to a redistribution of APP from endosomal intraluminal vesicles (ILVs) to the endosomal limiting membrane, with subsequent decrease in APP COOH-terminal fragment (CTF) content of secreted exosomes, but minimal effects on APP lysosomal degradation. Both the secreted and intracellular increase in Aβ40 is abolished by depletion of presenilin 2 (PSEN2), recently shown to be enriched on the endosomal limiting membrane compared to presenilin 1 (PSEN1). In a separate set of studies, we found that a familial AD mutant, L723P, which occurs immediately next to a string of three lysines in the juxtamembrane region, behaves more similarly to other FAD-causing mutations. APP L723P exhibits a selective increase in Aβ42, and a delay in degradation, but no change in exosomal content, despite some missorting to the endosomal limiting membrane. Our findings demonstrate that ubiquitin can act as a signal for endosomal sorting at five lysines in the APP cytodomain, disruption of which prevents sequestration of APP in ILVs and results in the processing of a larger pool of APP-CTF by PSEN2 on the endosomal membrane.
Additional file 1 of Newspaper coverage of food insecurity in UK, 2016–2019: a multi-method analysis
Creators: name: Yau, Amy
name: Singh-Lalli, Hardeep
name: Forde, Hannah
name: Keeble, Matthew
name: White, Martin
name: Adams, Jean
Publisher: name: figshare
Year: 2021
Subjects: subject: Medicine
subject: Biotechnology
subject: Ecology
subject: FOS: Biological sciences
subject: Science Policy
subject: Sociology
subject: FOS: Sociology
subject: Biological Sciences not elsewhere classified
subject: Developmental Biology
subject: Cancer
subject: Mental Health
subject: Computational Biology

description: Additional file 1.
اصلاح قانون سرباز هیئت‌علمی به‌منظور ایجاد ارتباط با صنعت و رفع نیازهای فناورانه کشور
Creators: name: AmirMohammad Abhary
Publisher: name: figshare
Year: 2019
Subjects: Uncategorized

description: یکی از برنامه‌های مناسبی که مدتی است در حال اجراست، به‌کارگیری افراد با مقطع دکتری (و بعضاً کارشناسی ارشد) به‌عنوان هیئت‌علمی در دانشگاه‌های متقاضی است، به این نحو که ایشان پس از گذراندن دوره آموزشی می‌توانند مدت معین خدمتی خود را در قابل هیئت‌علمی سرباز در آن دانشگاه‌ها به بحث و تحقیق و آموزش بپردازند و از این رهگذر نیازهای علمی مجموعه را تا حدی برطرف کنند و همچنین به دلیلشان اجتماعی مطلوب این موقعیت، انگیزه خدمتی‌شان افزایش یابد. می‌توان با ایجاد تغییراتی دز این حوزه به هم‌افزایی هر چه بیش‌تر میان صنعت و دانشگاه و همچنین رفع نیازهای پژوهشی واحدهای کوچک و فناور نوپا کمک قابل‌توجهی نمود.
Development of a wetland treatment system at United Keno Hill Mines, Eisa, Yukon Territory
Creators: name: Sobolewski, André
Publisher: name: The University of British Columbia
Year: 2009

description: An adit on the United Keno Hill property discharges water at 1-10 L/sec with 20-30 mg/L (ppm) zinc. This paper describes how a wetland treatment system was developed to passively treat this discharge. Adit water was supplied to a 180 m² pilot-scale wetland at a rate of 18 L/min. The wetland reduced zinc concentrations from 25 ppm to approximately 3 pprn. However, water in parts of the wetland had 0.3 ppm zinc. Microcosms established within the wetland reduced zinc concentrations to <0.2 ppm. Cobalt, iron, manganese, and nickel were also removed in the wetland and the microcosms. Finally, a natural wetland receiving water with 3 ppm zinc produced a discharge of 0.3 ppm zinc. Taken together, these results suggest that a constructed wetland can, in principle, reduce zinc below the permitted discharge limit of 0.5 ppm. Zinc appeared to be retained in the pilot wetland by reacting with hydrogen sulphide, generated in sediments by sulphate-reducing bacteria. Metals accumulating in natural wetlands receiving mine-impacted water were primarily retained with iron and/or manganese oxides, or as sulphides. These metals were not taken up by wetland plants.
On the extremal function for graph minors
Creators: name: Thomason, Andrew
name: Wales, Matthew
Publisher: name: arXiv
Year: 2019
Subjects: subject: Combinatorics (math.CO)
subject: FOS: Mathematics
subject: 05C83

description: For a graph $H$, let $c(H)=\inf\{c\,:\,e(G)\geq c|G| \mbox{ implies } G\succ H\,\}$, where $G\succ H$ means that $H$ is a minor of $G$. We show that if $H$ has average degree $d$, then $$ c(H)\le (0.319\ldots+o_d(1))|H|\sqrt{\log d} $$ where $0.319\ldots$ is an explicitly defined constant. This bound matches a corresponding lower bound shown to hold for almost all such $H$ by Norin, Reed, Wood and the first author.
description: Final accepted version