cometadata/datacite-rtg-text-other-reclassification-records huggingface dataset:
SCExAO and Keck Direct Imaging Discovery of a Low-Mass Companion Around the Accelerating F5 Star HIP 5319
Creators: name: Swimmer, Noah
name: Currie, Thayne
name: Steiger, Sarah
name: Brandt, Gregory Mirek
name: Brandt, Timothy D.
name: Guyon, Olivier
name: Kuzuhara, Masayuki
name: Chilcote, Jeffrey
name: Tobin, Taylor
name: Groff, Tyler D.
name: Lozi, Julien
name: Bailey, John I.
name: Walter, Alexander B.
name: Fruitwala, Neelay
name: Zobrist, Nicholas
name: Smith, Jennifer Pearl
name: Coiffard, Gregoire
name: Dodkins, Rupert
name: Davis, Kristina K.
name: Daal, Miguel
name: Bumble, Bruce
name: Vievard, Sebastien
name: Skaf, Nour
name: Deo, Vincent
name: Jovanovic, Nemanja
name: Martinache, Frantz
name: Tamura, Motohide
name: Kasdin, N. Jeremy
name: Mazin, Benjamin A.
Publisher: name: arXiv
Year: 2022
Subjects: subject: Solar and Stellar Astrophysics (astro-ph.SR)
subject: Earth and Planetary Astrophysics (astro-ph.EP)
subject: FOS: Physical sciences

description: We present the direct imaging discovery of a low-mass companion to the nearby accelerating F star, HIP 5319, using SCExAO coupled with the CHARIS, VAMPIRES, and MEC instruments in addition to Keck/NIRC2 imaging. CHARIS $JHK$ (1.1-2.4 $μ$m) spectroscopic data combined with VAMPIRES 750 nm, MEC $Y$, and NIRC2 $L_{\rm p}$ photometry is best matched by an M3--M7 object with an effective temperature of T=3200 K and surface gravity log($g$)=5.5. Using the relative astrometry for HIP 5319 B from CHARIS and NIRC2 and absolute astrometry for the primary from $Gaia$ and $Hipparcos$ and adopting a log-normal prior assumption for the companion mass, we measure a dynamical mass for HIP 5319 B of $31^{+35}_{-11}M_{\rm J}$, a semimajor axis of $18.6^{+10}_{-4.1}$ au, an inclination of $69.4^{+5.6}_{-15}$ degrees, and an eccentricity of $0.42^{+0.39}_{-0.29}$. However, using an alternate prior for our dynamical model yields a much higher mass of 128$^{+127}_{-88}M_{\rm J}$. Using data taken with the LCOGT NRES instrument we also show that the primary HIP 5319 A is a single star in contrast to previous characterizations of the system as a spectroscopic binary. This work underscores the importance of assumed priors in dynamical models for companions detected with imaging and astrometry and the need to have an updated inventory of system measurements.
description: 19 pages, 9 figuresm 5 tables
BEEC2.0: An Upgraded Version for the Production of Heavy Quarkonium at Electron-positron Collider
Creators: name: Yang, Zhi
name: Zheng, Xu-Chang
name: Wu, Xing-Gang
Publisher: name: arXiv
Year: 2022
Subjects: subject: High Energy Physics - Phenomenology (hep-ph)
subject: High Energy Physics - Experiment (hep-ex)
subject: FOS: Physical sciences

description: The event generator BEEC [Z. Yang, X.G. Wu and X.Y. Wang, Comput. Phys. Commun. 184, 2848 (2013)] was devoted to the simulation of heavy quarkonium production at an unpolarized electron-positron collider. We upgraded it here by adding the generation of quarkonium with polarized electron and positron beams. In addition, the production of color-singlet 2S-wave states were included. Several future electron-positron colliders with high luminosity have been under discussion in the past decade. Especially, their possibility of producing polarized beams is important for providing more insights into the underlying physics. This upgraded version offers a useful tool for the feasibility study on quarkonium from the experimental side.
description: 5 pages, 1 figure
Assessment of Physical and Mechanical Properties of Concrete Produced from Various Portland Cement Brands
Creators: name: Khoso, Salim
Publisher: name: figshare
Year: 2023
Subjects: classificationCode: 400504
subject: Construction engineering
classificationCode: 400505
subject: Construction materials
classificationCode: 400510
subject: Structural engineering

description: Construction projects require cement, which must have definite qualities so as to play its part separately in structure. The compressive strength of cement and, consequently, its physical properties could vary as a result of variations in the raw materials, as well as in manufacturing conditions. Therefore, an experimental study has been checked out herein by investigating the mechanical and physical properties of concrete specimens by means of four different types of Ordinary Portland Cements, namely Black Bull, Lucky, Pak Land and DG obtained from the market of Sindh Pakistan. Based on obtained results, it was found that Lucky cement type performed well when compared to other three types both in compressive and tensile strength of concrete. Although there were some differences in the physical properties of cement used in this study, however, they all meet with the requirements of international standards.
A Survey on the Image Retrieval via Site Operator
Publisher: name: Iranian Research Institute for Information Science and Technology (IranDoc)
Year: 2015

description: The purpose of the present study is to investigate the Impact of Image Indexing on Optimizing Image Retrieval via site operator. Using quasi-experimental method 100 images, each image was uploaded 9 times with concept-based characteristics on iiproject.ir. Analysis consists of images which retrieved from the site operator. Number of images retrieved by the site operator is 151 images of 900 ones that are used in this study. The minimum number of retrieved images is related to "image titles" and the maximum ones to the criteria images which entitled with Q code. Chi-square statistics showed that the number of images retrieved in various codes was different. The best ranking is related to “image title” and the weakest one related to “image caption in Farsi”. Images average ranking retrieved in 9 groups were different.
Effective Gravitational Couplings of Higher-Rank Supersymmetric Gauge Theories
Creators: name: John, Renjan Rajan
name: Mahato, Sujoy
name: Raman, Madhusudhan
Publisher: name: arXiv
Year: 2022
Subjects: subject: High Energy Physics - Theory (hep-th)
subject: FOS: Physical sciences

description: When placed on four-manifolds, $ \mathcal{N} = 2 $ gauge theories couple to topological invariants of the background via two functions $ A $ and $ B $. General considerations allow for these functions to be fixed in terms of the Coulomb moduli and other parameters in the theory, but only up to multiplicative factors about which little is known. We extend earlier work on the microscopic study of these functions in the $ Ω$-background to $ \mathcal{N} = 2 ^{\star } $ gauge theories with higher-rank $ \mathrm{U}(N) $ gauge groups. We complement this analysis by carrying out a perturbative study of these functions. This allows us to determine the manner in which these multiplicative factors scale with the rank of the gauge group and the mass of the adjoint hypermultiplet.
description: 22 pages
Around the Ring We Go: The Cold, Dense Ring of Molecular Gas in NGC 1614
Creators: name: Sliwa, Kazimierz
name: Wilson, Christine D.
name: Iono, Daisuke
name: Peck, Alison
name: Matsushita, Satoki
Publisher: name: arXiv
Year: 2014
Subjects: subject: Astrophysics of Galaxies (astro-ph.GA)
subject: FOS: Physical sciences

description: We present high-resolution archival Atacama Large Millimeter/submillimeter Array (ALMA) CO J=3-2 and J=6-5 and HCO+ J=4-3 observations and new CARMA CO and 13CO J=1-0 observations of the luminous infrared galaxy NGC 1614. The high-resolution maps show the previously identified ring-like structure while the CO J=3-2 map shows extended emission that traces the extended dusty features. We combined these new observations with previously published Submillimeter Array CO and 13CO J=2-1 observations to constrain the physical conditions of the molecular gas at a resolution of 230 pc using a radiative transfer code and a Bayesian likelihood analysis. At several positions around the central ring-like structure, the molecular gas is cold (20-40 K) and dense (> 10^{3.0} cm^{-3}) . The only region that shows evidence of a second molecular gas component is the "hole" in the ring. The CO-to-13CO abundance ratio is found to be greater than 130, more than twice the local interstellar medium value. We also measure the CO-to-H_{2} conversion factor, alpha_{CO}, to range from 0.9 to 1.5 M_sol (K km/s pc^{2})^{-1}.
description: ApJL accepted
Commonsense knowledge extraction for Persian language: A combinatory approach
Publisher: name: Iranian Research Institute for Information Science and Technology (IranDoc)
Year: 2015

description: Putting human commonsense knowledge into computers has always been a long standing dream of artificial intelligence (AI). The cost of several tens of millions of dollars and times have been covered so that the computers could know about “objects falling, not rising.”,” running is faster than walking. The large database was built, automated and semi-automated methods were introduced and volunteers’ efforts were utilized to achieve this, but an automated, high-throughput and low-noise method for commonsense collection still remains as the holy grail of AI. The aim of this study was to build commonsense knowledge ontology using three approaches namely Hearst method, machine translation and using structured resources. Using three Persian corpuse and Applying aforementioned methods, we could extract 7 different relations. 70000 assertions have been extracted. Finally, average accuracy of Hearst, MT and structured resource were 75%, 75% and 100% respectively.
Hierarchical Bloom Filter Trees for Approximate Matching
Creators: name: Lillis, David
name: Breitinger, Frank
name: Scanlon, Mark
Publisher: name: arXiv
Year: 2017
Subjects: subject: Cryptography and Security (cs.CR)
subject: Data Structures and Algorithms (cs.DS)
subject: FOS: Computer and information sciences

description: Bytewise approximate matching algorithms have in recent years shown significant promise in de- tecting files that are similar at the byte level. This is very useful for digital forensic investigators, who are regularly faced with the problem of searching through a seized device for pertinent data. A common scenario is where an investigator is in possession of a collection of "known-illegal" files (e.g. a collection of child abuse material) and wishes to find whether copies of these are stored on the seized device. Approximate matching addresses shortcomings in traditional hashing, which can only find identical files, by also being able to deal with cases of merged files, embedded files, partial files, or if a file has been changed in any way. Most approximate matching algorithms work by comparing pairs of files, which is not a scalable approach when faced with large corpora. This paper demonstrates the effectiveness of using a "Hierarchical Bloom Filter Tree" (HBFT) data structure to reduce the running time of collection-against-collection matching, with a specific focus on the MRSH-v2 algorithm. Three experiments are discussed, which explore the effects of different configurations of HBFTs. The proposed approach dramatically reduces the number of pairwise comparisons required, and demonstrates substantial speed gains, while maintaining effectiveness.
Integral Field spectroscopy of two HI rich E+A galaxies
Creators: name: Pracy, Michael
name: Owers, Matt
name: Zwaan, Martin
name: Couch, Warrick
name: Kuntschner, Harald
name: Croom, Scott
name: Sadler, Elaine
Publisher: name: arXiv
Year: 2014
Subjects: subject: Astrophysics of Galaxies (astro-ph.GA)
subject: FOS: Physical sciences

description: Approximately half of the nearby E+A galaxies followed up with 21-cm observations have detectable HI emission. The optical spectra of these galaxies show strong post-starburst stellar populations but no optical emission lines implying star-formation is not ongoing despite the presence of significant gas reservoirs. We have obtained integral field spectroscopic follow up observations of the two brightest, and nearest, of the six E+A galaxies with HI 21-cm emission in the recent sample of Zwaan et al. (2013). In the central regions of both galaxies the observations are consistent with a post-starburst population with little emission. However, outside the central regions both galaxies have strong optical emission lines, with a clumpy or knot-like distribution, indicating ongoing star-formation. We conclude that in these two cases the presence of optical spectra lacking evidence for star-formation while a large gas mass is present can be explained by an aperture effect in selecting the nearby E+A galaxies using single-fibre spectroscopy that probes only the galaxy core.
description: Accepted to MNRAS, 7 pages, 2 figures
Construction of a Global Pain Systems Network Highlights Phospholipid Signaling as a Regulator of Heat Nociception
Creators: name: Rao, Shuan
name: Kanaho, Yasunori
name: Penninger, Josef M.
name: Belfer, Inna
name: Gibson, Dustin
name: Maixner, William
name: Zimmer, Andreas
name: Gupta, Vaijayanti
name: Woolf, Clifford J.
name: Costigan, Michael
name: Kress, Michaela
name: Dai, Feng
name: Sasaki, Junko
name: Novatchkova, Maria
name: Marengo, Stefano
name: Meixner, Arabella
name: Smith, Shad
name: Griffin, Robert S.
name: Nayanala, Swetha
name: Whishaw, Ian Q.
name: Milinkeviciute, Giedre
name: Hirsch, Emilio
name: Mair, Norbert
name: Racz, Ildiko
name: Haubner, Bernhard J.
name: Pospisilik, J. Andrew
name: Neely, G. Gregory
name: Sasaki, Takehiko
name: Diatchenko, Luda
Publisher: name: The University of North Carolina at Chapel Hill University Libraries
Year: 2012

description: The ability to perceive noxious stimuli is critical for an animal's survival in the face of environmental danger, and thus pain perception is likely to be under stringent evolutionary pressure. Using a neuronal-specific RNAi knock-down strategy in adult Drosophila, we recently completed a genome-wide functional annotation of heat nociception that allowed us to identify α2δ3 as a novel pain gene. Here we report construction of an evolutionary-conserved, system-level, global molecular pain network map. Our systems map is markedly enriched for multiple genes associated with human pain and predicts a plethora of novel candidate pain pathways. One central node of this pain network is phospholipid signaling, which has been implicated before in pain processing. To further investigate the role of phospholipid signaling in mammalian heat pain perception, we analysed the phenotype of PIP5Kα and PI3Kγ mutant mice. Intriguingly, both of these mice exhibit pronounced hypersensitivity to noxious heat and capsaicin-induced pain, which directly mapped through PI3Kγ kinase-dead knock-in mice to PI3Kγ lipid kinase activity. Using single primary sensory neuron recording, PI3Kγ function was mechanistically linked to a negative regulation of TRPV1 channel transduction. Our data provide a systems map for heat nociception and reinforces the extraordinary conservation of molecular mechanisms of nociception across different species.
Decreased Mitochondrial DNA Mutagenesis in Human Colorectal Cancer
Creators: name: Bielas, Jason H.
name: Vermulst, Marc
name: Salk, Jesse J.
name: Ericson, Nolan G.
name: O'Sullivan, Jacintha
name: Sheahan, Kieran
name: Kulawiec, Mariola
Publisher: name: The University of North Carolina at Chapel Hill University Libraries
Year: 2012

description: Genome instability is regarded as a hallmark of cancer. Human tumors frequently carry clonally expanded mutations in their mitochondrial DNA (mtDNA), some of which may drive cancer progression and metastasis. The high prevalence of clonal mutations in tumor mtDNA has commonly led to the assumption that the mitochondrial genome in cancer is genetically unstable, yet this hypothesis has not been experimentally tested. In this study, we directly measured the frequency of non-clonal (random) de novo single base substitutions in the mtDNA of human colorectal cancers. Remarkably, tumor tissue exhibited a decreased prevalence of these mutations relative to adjacent non-tumor tissue. The difference in mutation burden was attributable to a reduction in C∶G to T∶A transitions, which are associated with oxidative damage. We demonstrate that the lower random mutation frequency in tumor tissue was also coupled with a shift in glucose metabolism from oxidative phosphorylation to anaerobic glycolysis, as compared to non-neoplastic colon. Together these findings raise the intriguing possibility that fidelity of mitochondrial genome is, in fact, increased in cancer as a result of a decrease in reactive oxygen species-mediated mtDNA damage.
Deep Genome-Wide Measurement of Meiotic Gene Conversion Using Tetrad Analysis in Arabidopsis thaliana
Creators: name: Haughey, Brena S.
name: Sun, Yujin
name: Cherian, Shalom
name: Lewis, Scott M.
name: Ambrose, Jonathan H.
name: Wellman, Emily C.
name: Berchowitz, Luke E.
name: Muñoz, Daniela F.
name: Pierrie, Sarah N.
name: Copenhaver, Gregory P.
name: Webster, Tyler D.
Publisher: name: The University of North Carolina at Chapel Hill University Libraries
Year: 2012

description: Gene conversion, the non-reciprocal exchange of genetic information, is one of the potential products of meiotic recombination. It can shape genome structure by acting on repetitive DNA elements, influence allele frequencies at the population level, and is known to be implicated in human disease. But gene conversion is hard to detect directly except in organisms, like fungi, that group their gametes following meiosis. We have developed a novel visual assay that enables us to detect gene conversion events directly in the gametes of the flowering plant Arabidopsis thaliana. Using this assay we measured gene conversion events across the genome of more than one million meioses and determined that the genome-wide average frequency is 3.5×10−4 conversions per locus per meiosis. We also detected significant locus-to-locus variation in conversion frequency but no intra-locus variation. Significantly, we found one locus on the short arm of chromosome 4 that experienced 3-fold to 6-fold more gene conversions than the other loci tested. Finally, we demonstrated that we could modulate conversion frequency by varying experimental conditions.
Finite top-mass effects in gluon-induced Higgs production with a jet-veto at NNLO
Creators: name: Neumann, Tobias
name: Wiesemann, Marius
Publisher: name: arXiv
Year: 2014
Subjects: subject: High Energy Physics - Phenomenology (hep-ph)
subject: FOS: Physical sciences

description: Effects from a finite top quark mass on the H+n-jet cross section through gluon fusion are studied for $n=0/n\ge 1$ at NNLO/NLO QCD. For this purpose, sub-leading terms in $1/m_t$ are calculated. We show that the asymptotic expansion of the jet-vetoed cross section at NNLO is very well behaved and that the heavy-top approximation is valid at the five permille level up to jet-veto cuts of 300 GeV. For the inclusive Higgs+jet rate, we introduce a matching procedure that allows for a reliable prediction of the top-mass effects using the expansion in $1/m_t$. The quality of the effective field theory to evaluate differential K-factors for the distribution of the hardest jet is found to be better than 1-2% as long as the transverse momentum of the jet is integrated out or remains below about 150 GeV.
description: 22 pages, 14 figures
Discretization of Linear Problems in Banach Spaces: Residual Minimization, Nonlinear Petrov-Galerkin, and Monotone Mixed Methods
Creators: name: Muga, Ignacio
name: van der Zee, Kristoffer G.
Publisher: name: arXiv
Year: 2015
Subjects: subject: Numerical Analysis (math.NA)
subject: FOS: Mathematics
subject: 41A65, 65J05, 46B20, 65N12, 65N15

description: This work presents a comprehensive discretization theory for abstract linear operator equations in Banach spaces. The fundamental starting point of the theory is the idea of residual minimization in dual norms, and its inexact version using discrete dual norms. It is shown that this development, in the case of strictly-convex reflexive Banach spaces with strictly-convex dual, gives rise to a class of nonlinear Petrov-Galerkin methods and, equivalently, abstract mixed methods with monotone nonlinearity. Crucial in the formulation of these methods is the (nonlinear) bijective duality map. Under the Fortin condition, we prove discrete stability of the abstract inexact method, and subsequently carry out a complete error analysis. As part of our analysis, we prove new bounds for best-approximation projectors, which involve constants depending on the geometry of the underlying Banach space. The theory generalizes and extends the classical Petrov-Galerkin method as well as existing residual-minimization approaches, such as the discontinuous Petrov-Galerkin method.
description: 43 pages, 2 figures
Using semantic networks in retrieving poems
Publisher: name: Iranian Research Institute for Information Science and Technology (IranDoc)
Year: 2015

description: Semantic relationship among existing concepts in a text can be a solution for better and more precise representation of its content. in addition to common indexing methods. Semantic networks are a pace in this way. In this research, we have attempted to extract the concepts related to the Allusions (Talmihat) in Hafez’s sonnets from six most frequently cited commentaries. The implied and literal meanings are extracted and separated subsequently, they are categorized in order to create connection among them and to draw their semantic networks. This effort improves retrieval in Hafez’s poetry based on audience needs. quantitative and qualitative content analysis are employed here. Quantitative content analysis is used to determine the frequency of concepts. Qualitative content analysis is employed to obtain the meanings of verses and to determine the implied and verbal meanings, and explore relationship among concepts, Both has served to draw a semantic network. The concepts and their relationship between them were identified and two semantic networks were drawn. With this contrivance, the distance and proximity of the main node (Hafez) and from each other, and also the number of poems belonging to concept were determined. Thus, tangible understanding of allusions in the poems of Hafez becomes possibleand systematic and, to some extent hierarchical relationship among them can be visualized. Facilitating retrieval is the most important using the semantic networks. Ssearching in these networks: users can 1) find the poems that they need 2) view the position of the subject throughout networks and 3) distinguish relationship among subjects in respect with other diagnoses.
Simulation-Informed Revenue Extrapolation with Confidence Estimate for Scaleup Companies Using Scarce Time-Series Data
Creators: name: Cao, Lele
name: Horn, Sonja
name: von Ehrenheim, Vilhelm
name: Stahl, Richard Anselmo
name: Landgren, Henrik
Publisher: name: arXiv
Year: 2022
Subjects: subject: Computational Engineering, Finance, and Science (cs.CE)
subject: Machine Learning (cs.LG)
subject: FOS: Computer and information sciences

description: Investment professionals rely on extrapolating company revenue into the future (i.e. revenue forecast) to approximate the valuation of scaleups (private companies in a high-growth stage) and inform their investment decision. This task is manual and empirical, leaving the forecast quality heavily dependent on the investment professionals' experiences and insights. Furthermore, financial data on scaleups is typically proprietary, costly and scarce, ruling out the wide adoption of data-driven approaches. To this end, we propose a simulation-informed revenue extrapolation (SiRE) algorithm that generates fine-grained long-term revenue predictions on small datasets and short time-series. SiRE models the revenue dynamics as a linear dynamical system (LDS), which is solved using the EM algorithm. The main innovation lies in how the noisy revenue measurements are obtained during training and inferencing. SiRE works for scaleups that operate in various sectors and provides confidence estimates. The quantitative experiments on two practical tasks show that SiRE significantly surpasses the baseline methods by a large margin. We also observe high performance when SiRE extrapolates long-term predictions from short time-series. The performance-efficiency balance and result explainability of SiRE are also validated empirically. Evaluated from the perspective of investment professionals, SiRE can precisely locate the scaleups that have a great potential return in 2 to 5 years. Furthermore, our qualitative inspection illustrates some advantageous attributes of the SiRE revenue forecasts.
description: Published in CIKM 2022 as full paper (12 pages and 6 figures). For data and code, see https://github.com/EQTPartners/sire
Epigenetic Remodeling of Meiotic Crossover Frequency in Arabidopsis thaliana DNA Methyltransferase Mutants
Creators: name: Grelon, Mathilde
name: Macaulay, Malcolm
name: Mezard, Christine
name: Henderson, Ian R.
name: Miller, Nigel
name: de Snoo, Bastiaan
name: Wijnker, Erik
name: Drouaud, Jan
name: Kelly, Krystyna A.
name: Yelina, Nataliya E.
name: Chelysheva, Liudmila
name: Choi, Kyuha
name: Copenhaver, Gregory P.
Publisher: name: The University of North Carolina at Chapel Hill University Libraries
Year: 2012

description: Meiosis is a specialized eukaryotic cell division that generates haploid gametes required for sexual reproduction. During meiosis, homologous chromosomes pair and undergo reciprocal genetic exchange, termed crossover (CO). Meiotic CO frequency varies along the physical length of chromosomes and is determined by hierarchical mechanisms, including epigenetic organization, for example methylation of the DNA and histones. Here we investigate the role of DNA methylation in determining patterns of CO frequency along Arabidopsis thaliana chromosomes. In A. thaliana the pericentromeric regions are repetitive, densely DNA methylated, and suppressed for both RNA polymerase-II transcription and CO frequency. DNA hypomethylated methyltransferase1 (met1) mutants show transcriptional reactivation of repetitive sequences in the pericentromeres, which we demonstrate is coupled to extensive remodeling of CO frequency. We observe elevated centromere-proximal COs in met1, coincident with pericentromeric decreases and distal increases. Importantly, total numbers of CO events are similar between wild type and met1, suggesting a role for interference and homeostasis in CO remodeling. To understand recombination distributions at a finer scale we generated CO frequency maps close to the telomere of chromosome 3 in wild type and demonstrate an elevated recombination topology in met1. Using a pollen-typing strategy we have identified an intergenic nucleosome-free CO hotspot 3a, and we demonstrate that it undergoes increased recombination activity in met1. We hypothesize that modulation of 3a activity is caused by CO remodeling driven by elevated centromeric COs. These data demonstrate how regional epigenetic organization can pattern recombination frequency along eukaryotic chromosomes.
Нефтяное загрязнение ландшафтов Чечни: распознавание на местности — «Технологии с одного взгляда»
Creators: name: Д. А. Маркелов
name: А. В. Маркелов
name: Н. Я. Минеева
name: А. П. Акользин
name: Б. И. Кочуров
name: Д. А. Шаповалов
name: А. О. Хуторова
name: М. А. Григорьева
name: Е. А. Чукмасова
Publisher: name: Экология урбанизированных территорий
Year: 2018
Subjects: ландшафты Чечни
геоэкологический стандарт территории
нефтяное загрязнение
территориальные объекты опасности
позиционирование на местности
фотобанк — эталон распознавания
«технологии с одного взгляда»
landscapes of Chechnya
geoecological standard of the territory
oil pollution
territorial hazard objects
positioning on the ground
photobank — the standard of recognition
“technology at a glance”.

description: Выполнено комплексное геоэкологическое обследование тестовой территории города Грозного. Составлен фотобанк природных ландшафтов. Создан геоэкологический стандарт территории как стратегический ресурс государства. Установлены, распознаны и закодированы территориальные объекты, являющиеся источниками опасности по критерию загрязнения нефтепродуктами (НП). Каждый тип объекта позиционирован на местности, определены его характеристики: код объекта, адрес, географические координаты, радиационный фон, площадь, фракция НП, эмпирический объем отходов. Создан фотобанк — эталон распознавания в «технологии с одного взгляда». Представленная продукция разработана на основе ГИ С-технологий обеспечения экологической безопасности и технологий реабилитации и рекультивации загрязненных территорий.
description: A comprehensive geoecological survey of the test territory of the Grozny city was carried out. A photobank of natural landscapes is composed. The geoecological standard of the territory was created as a strategic resource of the state. Established, recognized and coded territorial objects that are sources of danger by the criterion of contamination with oil products (OP). Each type of object is positioned on the terrain, its characteristics are defined: object code, address, geographical coordinates, radiation background, area, OP fraction, empirical volume of waste. Created photobank — the standard of recognition of “technology at a glance”. The presented products are developed on the basis of GIS-technologies providing ecological safety and technologies of rehabilitation and recultivation of contaminated territories.
The Solar Oxygen Abundance from an Empirical Three-Dimensional Model
Creators: name: Socas-Navarro, H.
Publisher: name: arXiv
Year: 2014
Subjects: subject: Solar and Stellar Astrophysics (astro-ph.SR)
subject: FOS: Physical sciences

description: The Oxygen abundance in the solar photosphere, and consequently the solar metallicity itself, is still a controversial issue with far-reaching implications in many areas of Astrophysics. This paper presents a new determination obtained by fitting the forbidden OI line at 6300 A with an observational 3D model. The approach presented here is novel because previous determinations were based either on 1D empirical stratifications or on 3D theoretical models. The resulting best-fit abundances are lg E(O)=8.90 and lg E(Ni)=6.15. Nevertheless, introducing minor tweaks in the model and the procedure, it is possible to retrieve very different values, even down to lg E(O)=8.70. This extreme sensitivity of the abundance to possible systematic effects is not something specific to this particular work but probably reflects the real uncertainty inherent to all abundance determinations based on a prescribed model atmosphere.
description: Submitted to A&A
A No-go Theorem for Superposed Actions (Making Schrödinger's Cat Quantum Nonlocal)
Creators: name: Łukaszyk, Szymon
Publisher: name: arXiv
Year: 2018
Subjects: subject: Quantum Physics (quant-ph)
subject: FOS: Physical sciences

description: The Extended Wigner's Friend thought experiment, which involves a quantum system with an agent who draws conclusions based on the results of a measurement of a quantum state provided in two nonorthogonal versions by another agent, led its designers to the conclusion that quantum theory cannot consistently explain the use of itself. It has also been suggested that this thought experiment is equivalent to entangled state (Bell-type) experiments. This study indicates that the assumption of the first Wigner's friend's freedom of choice, regarding how to prepare a quantum state in one of the two available nonorthogonal versions, invalidates such equivalence. A no-go theorem for superposed actions is derived on this basis. It is also argued that modeling Wigner-type experiments under the principle of locality, i.e., using enclosed containers modeled as composite, many-body quantum states, is fundamentally wrong as it neglects quantum nonlocality.
description: Keywords: measurement problem; Wigner-type experiments; Bell-type experiments; Wigner-Bell-type experiments; observer-independent facts; quantum contextuality; principle of locality; quantum nonlocality; freedom of choice (7 pages)
Extensive Evolutionary Changes in Regulatory Element Activity during Human Origins Are Associated with Altered Gene Expression and Positive Selection
Creators: name: Iyer, Vishwanath R.
name: Sheffield, Nathan C.
name: Fedrigo, Olivier
name: Furey, Terrence S.
name: Wray, Gregory A.
name: Shibata, Yoichiro
name: Song, Lingyun
name: Babbitt, Courtney C.
name: Lee, Bum-Kyu
name: Parker, Stephen C. J.
name: Tewari, Alok K.
name: Crawford, Gregory E.
name: Margulies, Elliott H.
name: London, Darin
name: Wortham, Matthew
Publisher: name: The University of North Carolina at Chapel Hill University Libraries
Year: 2012

description: Understanding the molecular basis for phenotypic differences between humans and other primates remains an outstanding challenge. Mutations in non-coding regulatory DNA that alter gene expression have been hypothesized as a key driver of these phenotypic differences. This has been supported by differential gene expression analyses in general, but not by the identification of specific regulatory elements responsible for changes in transcription and phenotype. To identify the genetic source of regulatory differences, we mapped DNaseI hypersensitive (DHS) sites, which mark all types of active gene regulatory elements, genome-wide in the same cell type isolated from human, chimpanzee, and macaque. Most DHS sites were conserved among all three species, as expected based on their central role in regulating transcription. However, we found evidence that several hundred DHS sites were gained or lost on the lineages leading to modern human and chimpanzee. Species-specific DHS site gains are enriched near differentially expressed genes, are positively correlated with increased transcription, show evidence of branch-specific positive selection, and overlap with active chromatin marks. Species-specific sequence differences in transcription factor motifs found within these DHS sites are linked with species-specific changes in chromatin accessibility. Together, these indicate that the regulatory elements identified here are genetic contributors to transcriptional and phenotypic differences among primate species.
(:unas) unassigned
Creators: name: (:Unkn) Unknown
Publisher: name: Universita' degli Studi di Salerno
Year: 2024

description: To address cultural and political issues facing Germany in the late 1970s filmmaker Werner Herzog decided to remake F.W. Murnau’s Nosferatu, one of the most famous German films from the early 1920s. In doing so Herzog was able to connect the country’s past issues with those of his present day, challenging his audience to recognize contemporary shortcomings not as new problems but instead as problems which, like Count Dracula himself, continually resurrect themselves. Herzog’s ability to connect his film with both the German artistic past and the historical past makes his version of Nosferatu an important artifact within New German Cinema.
On the Spectrum of Superspheres
Creators: name: Cagnazzo, Alessandra
name: Schomerus, Volker
name: Tlapak, Vaclav
Publisher: name: arXiv
Year: 2014
Subjects: subject: High Energy Physics - Theory (hep-th)
subject: FOS: Physical sciences

description: Sigma models on coset superspaces, such as odd dimensional superspheres, play an important role in physics and in particular the AdS/CFT correspondence. In this work we apply recent general results on the spectrum of coset space models and on supergroup WZNW models to study the conformal sigma model with target space S^{3|2}. We construct its vertex operators and provide explicit formulas for their anomalous dimensions, at least to leading order in the sigma model coupling. The results are used to revisit a non-perturbative duality between the supersphere and the OSP(4|2) Gross-Neveu model that was conjectured by Candu and Saleur. With the help of powerful all-loop results for 1/2 BPS operators in the Gross-Neveu model we are able to recover the entire zero mode spectrum of the sigma model at a certain finite value of the Gross-Neveu coupling. In addition, we argue that the sigma model constraints and equations of motion are implemented correctly in the dual Gross-Neveu description. On the other hand, high(er) gradient operators of the sigma model are not all accounted for. It is possible that this discrepancy is related to an instability from high gradient operators that has previously been observed in the context of Anderson localization.
A Serre weight conjecture for geometric Hilbert modular forms in characteristic p
Creators: name: Diamond, Fred
name: Sasaki, Shu
Publisher: name: arXiv
Year: 2017
Subjects: subject: Number Theory (math.NT)
subject: FOS: Mathematics
subject: 11F41 (Primary), 11F80, 11F33 (Secondary)

description: Let p be a prime and F a totally real field in which p is unramified. We consider mod p Hilbert modular forms for F, defined as sections of automorphic line bundles on Hilbert modular varieties of level prime to p in characteristic p. For a mod p Hilbert modular Hecke eigenform of arbitrary weight (without parity hypotheses), we associate a two-dimensional representation of the absolute Galois group of F, and we give a conjectural description of the set of weights of all eigenforms from which it arises. This conjecture can be viewed as a "geometric" variant of the "algebraic" Serre weight conjecture of Buzzard-Diamond-Jarvis, in the spirit of Edixhoven's variant of Serre's original conjecture in the case F = Q. We develop techniques for studying the set of weights giving rise to a fixed Galois representation, and prove results in support of the conjecture, including cases of partial weight one.
description: 74 pages, corrected reference in v3 (section 11.4), published in JEMS (online)
All-electric spin device operation using the Weyl semimetal, WTe$_2$, at room temperature
Creators: name: Ohnishi, Kosuke
name: Aoki, Motomi
name: Ohshima, Ryo
name: Shigematsu, Ei
name: Ando, Yuichiro
name: Takenobu, Taishi
name: Shiraishi, Masashi
Publisher: name: arXiv
Year: 2022
Subjects: subject: Mesoscale and Nanoscale Physics (cond-mat.mes-hall)
subject: FOS: Physical sciences

description: Topological quantum materials (TQMs) possess abundant and attractive spin physics, and a Weyl semimetal is the representative material because of the generation of spin polarization that is available for spin devices due to fictitious Weyl monopoles at the edge of the Weyl node. Meanwhile, a Weyl semimetal allows the other but unexplored spin polarization due to local symmetry breaking. Here, we report all-electric spin device operation using a type-II Weyl semimetal, WTe$_2$, at room temperature. The polarization of spins propagating in the all-electric device is perpendicular to the WTe$_2$ plane, which is ascribed to local in-plane symmetry breaking in WTe$_2$, yielding the spin polarization creation of propagating charged carriers, namely, the spin-polarized state creation from the non-polarized state. Systematic control experiments unequivocally negate unexpected artifacts, such as the anomalous Hall effect, the anisotropic magnetoresistance etc. Creation of all-electric spin devices made of TQMs and their operation at room temperature can pave a new pathway for novel spin devices made of TQMs resilient to thermal fluctuation.
description: 20 pages, 4 figures
Susceptibility study of TES micro-calorimeters for X-ray spectroscopy under FDM readout
Creators: name: Vaccaro, Davide
name: Akamatsu, Hiroki
name: Gottardi, Luciano
name: van der Kuur, Jan
name: Taralli, Emanuele
name: de Wit, Martin
name: Bruijn, Marcel P.
name: Hartog, Roland den
name: Kiviranta, Mikko
name: van der Linden, Anton J.
name: Nagayoshi, Kenichiro
name: Ravensberg, Kevin
name: Ridder, Marcel L.
name: Visser, Sven
name: Jackson, Brian D.
name: Gao, Jian-Rong
name: Hoogeveen, Ruud W. M.
name: Herder, Jan-Willem A. den
Publisher: name: arXiv
Year: 2022
Subjects: subject: Instrumentation and Methods for Astrophysics (astro-ph.IM)
subject: FOS: Physical sciences

description: We present a characterization of the sensitivity of TES X-ray micro-calorimeters to environmental conditions under frequency-domain multiplexing (FDM) readout. In the FDM scheme, each TES in a readout chain is in series with a LC band-pass filter and AC biased with an independent carrier at MHz range. Using TES arrays, cold readout circuitry and warm electronics fabricated at SRON and SQUIDs produced at VTT Finland, we characterize the sensitivity of the detectors to bias voltage, bath temperature and magnetic field. We compare our results with the requirements for the Athena X-IFU instrument, showing the compliance of the measured sensitivities. We find in particular that FDM is intrinsically insensitive to the magnetic field because of TES design and AC readout.
description: This paper has been accepted for publication in Journal of Low Temperature Physics
Fine-Mapping and Initial Characterization of QT Interval Loci in African Americans
Creators: name: Kooperberg, Charles
name: He, Qianchuan
name: Sotoodehnia, Nona
name: Fesinmeyer, Megan D.
name: Haiman, Christopher A.
name: Lin, Dan-Yu
name: Patton, Kristen K.
name: Jeff, Janina M.
name: Young, Alicia M.
name: Hindorff, Lucia A.
name: Klein, Liviu
name: Mohlke, Karen L.
name: North, Kari E.
name: Avery, Christy L.
name: Peters, Ulrike
name: Arking, Dan E.
name: Buyske, Steven
name: Duggan, David
name: Shohet, Ralph V.
name: Whitsel, Eric A.
name: Carty, Cara L.
name: Sethupathy, Praveen
Publisher: name: The University of North Carolina at Chapel Hill University Libraries
Year: 2012

description: The QT interval (QT) is heritable and its prolongation is a risk factor for ventricular tachyarrhythmias and sudden death. Most genetic studies of QT have examined European ancestral populations; however, the increased genetic diversity in African Americans provides opportunities to narrow association signals and identify population-specific variants. We therefore evaluated 6,670 SNPs spanning eleven previously identified QT loci in 8,644 African American participants from two Population Architecture using Genomics and Epidemiology (PAGE) studies: the Atherosclerosis Risk in Communities study and Women's Health Initiative Clinical Trial. Of the fifteen known independent QT variants at the eleven previously identified loci, six were significantly associated with QT in African American populations (P≤1.20×10−4): ATP1B1, PLN1, KCNQ1, NDRG4, and two NOS1AP independent signals. We also identified three population-specific signals significantly associated with QT in African Americans (P≤1.37×10−5): one at NOS1AP and two at ATP1B1. Linkage disequilibrium (LD) patterns in African Americans assisted in narrowing the region likely to contain the functional variants for several loci. For example, African American LD patterns showed that 0 SNPs were in LD with NOS1AP signal rs12143842, compared with European LD patterns that indicated 87 SNPs, which spanned 114.2 Kb, were in LD with rs12143842. Finally, bioinformatic-based characterization of the nine African American signals pointed to functional candidates located exclusively within non-coding regions, including predicted binding sites for transcription factors such as TBX5, which has been implicated in cardiac structure and conductance. In this detailed evaluation of QT loci, we identified several African Americans SNPs that better define the association with QT and successfully narrowed intervals surrounding established loci. These results demonstrate that the same loci influence variation in QT across multiple populations, that novel signals exist in African Americans, and that the SNPs identified as strong candidates for functional evaluation implicate gene regulatory dysfunction in QT prolongation.
Phonon dynamics in correlated quantum systems driven away from equilibrium
Creators: name: Wilner, Eli Y.
name: Wang, Haobin
name: Thoss, Michael
name: Rabani, Eran
Publisher: name: arXiv
Year: 2014
Subjects: subject: Strongly Correlated Electrons (cond-mat.str-el)
subject: Mesoscale and Nanoscale Physics (cond-mat.mes-hall)
subject: FOS: Physical sciences

description: A general form of a many-body Hamiltonian is considered, which includes an interacting fermionic sub-system coupled to non-interacting extended fermionic and bosonic systems. We show that the exact dynamics of the extended bosonic system can be derived from the reduced density matrix of the sub-system alone, despite the fact that the latter contains information about the sub-system only. The advantage of the formalism is immediately clear: While the reduced density matrix of the sub-system is readily available, the formalism offers access to observables contained in the full density matrix, which is often difficult to obtain. As an example, we consider an extended Holstein model and study the nonequilibrium dynamics of the, so called, "reaction mode" for different model parameters. The effects of the phonon frequency, the strength of the electron-phonon couplings, and the source-drain bias voltage on the phonon dynamics across the bistability are discussed.
description: 5 pages, 3 figures
G Protein Activation without a GEF in the Plant Kingdom
Creators: name: Jones, Janice C.
name: Bennetzen, Jeffrey L.
name: Urano, Daisuke
name: Jones, Alan M.
name: Bradford, William
name: Wang, Hao
name: Matthews, Melissa
Publisher: name: The University of North Carolina at Chapel Hill University Libraries
Year: 2012

description: Animal heterotrimeric G proteins are activated by guanine nucleotide exchange factors (GEF), typically seven transmembrane receptors that trigger GDP release and subsequent GTP binding. In contrast, the Arabidopsis thaliana G protein (AtGPA1) rapidly activates itself without a GEF and is instead regulated by a seven transmembrane Regulator of G protein Signaling (7TM-RGS) protein that promotes GTP hydrolysis to reset the inactive (GDP-bound) state. It is not known if this unusual activation is a major and constraining part of the evolutionary history of G signaling in eukaryotes. In particular, it is not known if this is an ancestral form or if this mechanism is maintained, and therefore constrained, within the plant kingdom. To determine if this mode of signal regulation is conserved throughout the plant kingdom, we analyzed available plant genomes for G protein signaling components, and we purified individually the plant components encoded in an informative set of plant genomes in order to determine their activation properties in vitro. While the subunits of the heterotrimeric G protein complex are encoded in vascular plant genomes, the 7TM-RGS genes were lost in all investigated grasses. Despite the absence of a Gα-inactivating protein in grasses, all vascular plant Gα proteins examined rapidly released GDP without a receptor and slowly hydrolyzed GTP, indicating that these Gα are self-activating. We showed further that a single amino acid substitution found naturally in grass Gα proteins reduced the Gα-RGS interaction, and this amino acid substitution occurred before the loss of the RGS gene in the grass lineage. Like grasses, non-vascular plants also appear to lack RGS proteins. However, unlike grasses, one representative non-vascular plant Gα showed rapid GTP hydrolysis, likely compensating for the loss of the RGS gene. Our findings, the loss of a regulatory gene and the retention of the “self-activating” trait, indicate the existence of divergent Gα regulatory mechanisms in the plant kingdom. In the grasses, purifying selection on the regulatory gene was lost after the physical decoupling of the RGS protein and its cognate Gα partner. More broadly these findings show extreme divergence in Gα activation and regulation that played a critical role in the evolution of G protein signaling pathways.