cometadata/datacite-rtg-text-other-reclassification-records huggingface dataset:
Fluctuation-Driven Selection at Criticality in a Frustrated Magnetic System: the Case of Multiple-k Partial Order on the Pyrochlore Lattice
Creators: name: Javanparast, Behnam
name: Hao, Zhihao
name: Enjalran, Matthew
name: Gingras, Michel J. P.
Publisher: name: arXiv
Year: 2013
Subjects: subject: Strongly Correlated Electrons (cond-mat.str-el)
subject: Statistical Mechanics (cond-mat.stat-mech)
subject: FOS: Physical sciences

description: We study the problem of partially ordered phases with periodically arranged disordered (paramagnetic) sites on the pyrochlore lattice, a network of corner-sharing tetrahedra. The periodicity of these phases is characterized by one or more wave vectors k=(1/2 1/2 1/2). Starting from a general microscopic Hamiltonian including anisotropic nearest-neighbor exchange, long-range dipolar interactions and second- and third-nearest neighbor exchange, we identify using standard mean-field theory (s-MFT) an extended range of interaction parameters that support partially ordered phases. We demonstrate that thermal fluctuations ignored in s-MFT are responsible for the selection of one particular partially ordered phase, e.g. the "4-k" phase over the "1-k" phase. We suggest that the transition into the 4-k phase is continuous with its critical properties controlled by the cubic fixed point of a Ginzburg-Landau theory with a 4-component vector order-parameter. By combining an extension of the Thouless-Anderson-Palmer method originally used to study fluctuations in spin glasses with parallel-tempering Monte-Carlo simulations, we establish the phase diagram for different types of partially ordered phases. Our results elucidate the long-standing puzzle concerning the origin of the 4-k partially ordered phase observed in the Gd2Ti2O7 dipolar pyrochlore antiferromagnet below its paramagnetic phase transition temperature.
description: 13 pages, 4 figures
Generalizing the correlated chromophore domain model of reversible photodegradation to include the effects of an applied electric field
Creators: name: Anderson, Benjamin
name: Kuzyk, Mark G.
Publisher: name: arXiv
Year: 2013
Subjects: subject: Optics (physics.optics)
subject: FOS: Physical sciences

description: All observations of photodegradation and self healing follow the predictions of the correlated chromophore domain model. [Ramini et.al. Polym. Chem., 2013, 4, 4948.] In the present work, we generalize the domain model to describe the effects of an electric field by including induced dipole interactions between molecules in a domain by means of a self-consistent field approach. This electric field correction is added to the statistical mechanical model to calculate the distribution of domains that are central to healing. Also included in the model are the dynamics due to the formation of an irreversibly damaged species. As in previous studies, the model with a one-dimensional domain best explains all experimental data of the population as a function of time, temperature, intensity, concentration, and now applied electric field. Though the nature of a domain is yet to be determined, the fact that only one-dimensional domain models are consistent with observations suggests that they might be made of correlated dye molecules along polymer chains.
description: 12 pages, 9 figures
DiffFormer: a Differential Spatial-Spectral Transformer for Hyperspectral Image Classification
Creators: name: Ahmad, Muhammad
name: Mazzara, Manuel
name: Distefano, Salvatore
name: Khan, Adil Mehmood
name: Ullo, Silvia Liberata
Publisher: name: arXiv
Year: 2024
Subjects: subject: Computer Vision and Pattern Recognition (cs.CV)
subject: FOS: Computer and information sciences

description: Hyperspectral image classification (HSIC) has gained significant attention because of its potential in analyzing high-dimensional data with rich spectral and spatial information. In this work, we propose the Differential Spatial-Spectral Transformer (DiffFormer), a novel framework designed to address the inherent challenges of HSIC, such as spectral redundancy and spatial discontinuity. The DiffFormer leverages a Differential Multi-Head Self-Attention (DMHSA) mechanism, which enhances local feature discrimination by introducing differential attention to accentuate subtle variations across neighboring spectral-spatial patches. The architecture integrates Spectral-Spatial Tokenization through three-dimensional (3D) convolution-based patch embeddings, positional encoding, and a stack of transformer layers equipped with the SWiGLU activation function for efficient feature extraction (SwiGLU is a variant of the Gated Linear Unit (GLU) activation function). A token-based classification head further ensures robust representation learning, enabling precise labeling of hyperspectral pixels. Extensive experiments on benchmark hyperspectral datasets demonstrate the superiority of DiffFormer in terms of classification accuracy, computational efficiency, and generalizability, compared to existing state-of-the-art (SOTA) methods. In addition, this work provides a detailed analysis of computational complexity, showcasing the scalability of the model for large-scale remote sensing applications. The source code will be made available at \url{https://github.com/mahmad000/DiffFormer} after the first round of revision.
Vectors as Epidemiological Sentinels: Patterns of Within-Tick Borrelia burgdorferi Diversity
Creators: name: Walter, Katharine S.
name: Carpi, Giovanna
name: Evans, Benjamin R.
name: Caccone, Adalgisa
name: Diuk-Wasser, Maria
Publisher: name: Columbia University
Year: 2016
Subjects: Population genetics
Evolutionary genetics
Lyme disease
Pathogenic bacteria
Epidemiology

description: Hosts including humans, other vertebrates, and arthropods, are frequently infected with heterogeneous populations of pathogens. Within-host pathogen diversity has major implications for human health, epidemiology, and pathogen evolution. However, pathogen diversity within-hosts is difficult to characterize and little is known about the levels and sources of within-host diversity maintained in natural populations of disease vectors. Here, we examine genomic variation of the Lyme disease bacteria, Borrelia burgdorferi (Bb), in 98 individual field-collected tick vectors as a model for study of within-host processes. Deep population sequencing reveals extensive and previously undocumented levels of Bb variation: the majority (~70%) of ticks harbor mixed strain infections, which we define as levels Bb diversity pre-existing in a diverse inoculum. Within-tick diversity is thus a sample of the variation present within vertebrate hosts. Within individual ticks, we detect signatures of positive selection. Genes most commonly under positive selection across ticks include those involved in dissemination in vertebrate hosts and evasion of the vertebrate immune complement. By focusing on tick-borne Bb, we show that vectors can serve as epidemiological and evolutionary sentinels: within-vector pathogen diversity can be a useful and unbiased way to survey circulating pathogen diversity and identify evolutionary processes occurring in natural transmission cycles.
title: Beiträge zur Interpretation und Textrekonstruktion des mittelhochdeutschen Gedichtes "Kloster der Minne"; 1895
title: Einleitender Teil
titleType: Subtitle
Creators: name: Richter, Georg
Publisher: name: Universitätsbibliothek der Ludwig-Maximilians-Universität München
Year: 2006

description: Berlin, Univ., Diss., 1895
Implicit dose-response curves
Creators: name: Millán, Mercedes Pérez
name: Dickenstein, Alicia
Publisher: name: arXiv
Year: 2014
Subjects: subject: Quantitative Methods (q-bio.QM)
subject: Algebraic Geometry (math.AG)
subject: FOS: Biological sciences
subject: FOS: Mathematics

description: We develop tools from computational algebraic geometry for the study of steady state features of autonomous polynomial dynamical systems via elimination of variables. In particular, we obtain nontrivial bounds for the steady state concentration of a given species in biochemical reaction networks with mass-action kinetics. This species is understood as the output of the network and we thus bound the maximal response of the system. The improved bounds give smaller starting boxes to launch numerical methods. We apply our results to the sequential enzymatic network studied in Markevich et al.(2004) to find nontrivial upper bounds for the different substrate concentrations at steady state. Our approach does not require any simulation, analytical expression to describe the output in terms of the input, or the absence of multistationarity. Instead, we show how to extract information from effectively computable implicit dose-response curves with the use of resultants and discriminants. We moreover illustrate in the application to an enzymatic network, the relation between the exact implicit dose-response curve we obtain symbolically and the standard hysteresis diagram provided by a numerical solver. The setting and tools we propose could yield many other results adapted to any autonomous polynomial dynamical system, beyond those where it is possible to get explicit expressions.
description: The final publication is available at Springer via http://dx.doi.org/10.1007/s00285-014-0809-4
British Columbia Legislative Assembly sessional clipping book (1909-01)
Creators: name: :Unav
Publisher: name: University of Victoria Libraries
Year: 2022
Subjects: subject: Politics and government
valueUri: http://id.worldcat.org/fast/1919741
subject: British Columbia. Legislative Assembly
valueUri: http://id.worldcat.org/fast/600765
subject: Law
valueUri: http://id.worldcat.org/fast/993678
subject: FOS: Law

description: These Sessional Clippings books cover the period 1891 to 1972, and include newspaper accounts written by various legislative reporters who covered debates occurring in the British Columbia Legislative Assembly. Transcripts of debates of the Legislative Assembly (Hansard) were not published in B.C. until 1970; hence these "Sessional Clipping Books" augment the "Journals", the record of daily proceedings of the Legislative Assembly. Selected clippings from various newspapers including the Vancouver Sun, the Vancouver Province, the Colonist, and the Times newspapers, relating to the newspaper reports concerning activities of the Legislature. The original sessional clippings books comprise 351 ledger size print volumes, held at the Legislative Library in Victoria BC. The print volumes were microfilmed onto 26 reels in 1977 under a Tri University Libraries (TRIUL) project by Precision Micrographic Services (Vancouver, B.C.), with the permission of the Legislative Library, Victoria, British Columbia. This digital collection was created by scanning the 26 microfilm reels.
Research on Space Occupancy, Activity Rhythm and Sexual Segregation of White-Lipped Deer (Cervus albirostris) in Forest Habitats of Jiacha Gorge on Yarlung Zangbo River Basin Based on Infrared Camera Technology
Creators: name: Liu, Yujia
name: Huang, Kai
name: Wang, Xueyu
name: Krzton, Ali
name: Xia, Wancai
name: Li, Dayong
Publisher: name: MDPI
Year: 2023
Subjects: Cervus albirostris
infrared camera
activity rhythm
site occupancy model
sexual segregation

description: The white-lipped deer (Cervus albirostris) is a rare and endangered species found in the Qinghai-Tibet Plateau in China. To understand the space occupancy, activity rhythm, and sexual segregation of the white-lipped deer, 24,096 effective photos and 827 effective videos were captured using infrared cameras from February 2020 to January 2022. The ecology and behavior of the white-lipped deer in Jiacha Gorge were studied in more detail using site occupancy models, relative abundance index, and other technologies and methods. The results show that The occupancy predicted by the model exceeds or approaches 0.5. The occupancy increases with greater altitude and with larger EVI values, while the detection rate increases with altitude only during spring and decreases with EVI values only in summer. The daily activity peaks for white-lipped deer were observed from 7:00 to 11:00 and 17:00 to 22:00, with annual activity peaks occurring from April to June and from September to November. From July to the following January, white-lipped deer mostly move in mixed-sex groups, while during the remainder of the year, they predominantly associate with individuals of the same sex. Climate, vegetation coverage, food resources, and human disturbance collectively influenced the behavior and habitat utilization of white-lipped deer. The foundational research conducted on white-lipped deer over the past two years is expected to enhance the basic understanding of white-lipped deer in the Qinghai-Tibet Plateau and contribute to future protection and management decisions.
Ctenomys nattereri Wagner 1848
Creators: name: Honacki, James H.
name: Kinman, Kenneth E.
name: Koeppl, James W.
Publisher: name: Zenodo
Year: 1982
Subjects: Biodiversity
Taxonomy
Animalia
Chordata
Mammalia
Rodentia
Ctenomyidae
Ctenomys
Ctenomys nattereri

description: Ctenomys nattereri Wagner, 1848. Arch. Naturg., 1:72. TYPE LOCALITY: Brazil, Mato Grosso, Caicara. DISTRIBUTION: Mato Grosso (Brazil). ISIS NUMBER: 5301410027001015001 as C. natteri (sic).
description: Published as part of James H. Honacki, Kenneth E. Kinman & James W. Koeppl, 1982, Order Rodentia (Part 6), pp. 560-594 in Mammal Species of the World (1 st Edition), Lawrence, Kansas, USA :Alien Press, Inc. & The Association of Systematics Collections on page 584, DOI: 10.5281/zenodo.7353039
Benchmarking a Soil Moisture Data Assimilation System for Agricultural Drought Monitoring
Creators: name: Han, Eun Jin
name: Crow, Wade T.
name: Holmes, Thomas
name: Bolten, John
Publisher: name: Columbia University
Year: 2014
Subjects: Hydrology--Data processing
Soil moisture
Hydrology

description: Despite considerable interest in the application of land surface data assimilation systems (LDASs) for agricultural drought applications, relatively little is known about the large-scale performance of such systems and, thus, the optimal methodological approach for implementing them. To address this need, this paper evaluates an LDAS for agricultural drought monitoring by benchmarking individual components of the system (i.e., a satellite soil moisture retrieval algorithm, a soil water balance model, and a sequential data assimilation filter) against a series of linear models that perform the same function (i.e., have the same basic input/output structure) as the full system component. Benchmarking is based on the calculation of the lagged rank cross correlation between the normalized difference vegetation index (NDVI) and soil moisture estimates acquired for various components of the system. Lagged soil moisture/NDVI correlations obtained using individual LDAS components versus their linear analogs reveal the degree to which nonlinearities and/or complexities contained within each component actually contribute to the performance of the LDAS system as a whole. Here, a particular system based on surface soil moisture retrievals from the Land Parameter Retrieval Model (LPRM), a two-layer Palmer soil water balance model, and an ensemble Kalman filter (EnKF) is benchmarked. Results suggest significant room for improvement in each component of the system.
An unexpected discovery: One library's experience with discovery service evaluation
Creators: name: Ellero, Nadine
name: Rumble, Juliet
Publisher: name: Association of College & Research Libraries
Year: 2013
Subjects: assessment of technology

description: A growing number of libraries have enthusiastically embraced web-scale discovery services, which advertise one-stop searching for libraries’ print and digital collections. The appeal of a single search box providing access to a unified index of library resources has been a key selling point for discovery system vendors. Learn how Auburn University Libraries investigated acquisition of a web-scale discovery service, questioned these fashionable notions, and concluded that key make-overs are needed for effective user engagement.
LKB1 Regulates Mitochondria-Dependent Presynaptic Calcium Clearance and Neurotransmitter Release Properties at Excitatory Synapses along Cortical Axons
Creators: name: Kwon, Seok-Kyu
name: Sando, Richard
name: Lewis, Tommy Len
name: Hirabayashi, Yusuke
name: Maximov, Anton
name: Polleux, Franck
Publisher: name: Columbia University
Year: 2016
Subjects: subject: Neural transmission
subject: Homeostasis
subject: Calcium--Physiological effect
subject: Mitochondria
subject: Neurosciences
subject: FOS: Clinical medicine

description: Individual synapses vary significantly in their neurotransmitter release properties, which underlie complex information processing in neural circuits. Presynaptic Ca²⁺ homeostasis plays a critical role in specifying neurotransmitter release properties, but the mechanisms regulating synapse-specific Ca²⁺ homeostasis in the mammalian brain are still poorly understood. Using electrophysiology and genetically encoded Ca²⁺ sensors targeted to the mitochondrial matrix or to presynaptic boutons of cortical pyramidal neurons, we demonstrate that the presence or absence of mitochondria at presynaptic boutons dictates neurotransmitter release properties through Mitochondrial Calcium Uniporter (MCU)-dependent Ca²⁺ clearance. We demonstrate that the serine/threonine kinase LKB1 regulates MCU expression, mitochondria-dependent Ca²⁺ clearance, and thereby, presynaptic release properties. Re-establishment of MCU-dependent mitochondrial Ca²⁺ uptake at glutamatergic synapses rescues the altered neurotransmitter release properties characterizing LKB1-null cortical axons. Our results provide novel insights into the cellular and molecular mechanisms whereby mitochondria control neurotransmitter release properties in a bouton-specific way through presynaptic Ca²⁺ clearance.
Star Formation and AGN Activity in Interacting Galaxies: A Near-UV Perspective
Creators: name: Scott, Caroline
name: Kaviraj, Sugata
Publisher: name: arXiv
Year: 2013
Subjects: subject: Astrophysics of Galaxies (astro-ph.GA)
subject: Cosmology and Nongalactic Astrophysics (astro-ph.CO)
subject: FOS: Physical sciences

description: We study nearby galaxies in close pairs to study the key factors affecting star formation and AGN activity triggered during galaxy interactions. Close pairs are selected from the Sloan Digital Sky Survey assuming a projected separation of $
Ctenomys occultus Thomas 1920
Creators: name: Honacki, James H.
name: Kinman, Kenneth E.
name: Koeppl, James W.
Publisher: name: Zenodo
Year: 1982
Subjects: Biodiversity
Taxonomy
Animalia
Chordata
Mammalia
Rodentia
Ctenomyidae
Ctenomys
Ctenomys occultus

description: Ctenomys occultus Thomas, 1920. Ann. Mag. Nat. Hist., ser. 9, 6:243. TYPE LOCALITY: Argentina, Monteagudo, 80 km S.E. Tucuman City. DISTRIBUTION: N. Argentina. COMMENT: Revised by Reig et al., 1966, Contr. Cient. Fac. Cienc. Exact. Fis. Nat. Univ. Buenos Aires (Zool.), 2:299-352; also see Cabrera, 1961: 552, who included this species in mendocinus.
description: Published as part of James H. Honacki, Kenneth E. Kinman & James W. Koeppl, 1982, Order Rodentia (Part 6), pp. 560-594 in Mammal Species of the World (1 st Edition), Lawrence, Kansas, USA :Alien Press, Inc. & The Association of Systematics Collections on page 584, DOI: 10.5281/zenodo.7353039
description: {"references": ["Reig, O. A., J. R. Contreras, and M. J. Piantanida. 1966. Contribucion a la elucidacion de la sistematica de las entidades del genero Ctenomys (Rodentia, Octodontidae). I. Relaciones de parentesco entre muestras de ocho poblaciones de tuco-tucos inferidas del estudio estadistico de variables del fenotipo y su correlacion con las caracteristicas del cariotipo. Contribuciones Cientificas Facultad Ciencias Exactas Naturales, Universidad Buenos Aires (Zoologia), 2: 299 - 352."]}
If you build partnerships, they will come and share: Collaborative learning commons planning and use
Creators: name: Boosinger, Marcia
name: Bowden, Tamara
name: Hix, Ellyn
name: MacEwan, Bonnie
name: Rumble, Juliet
Publisher: name: Alabama Library Association
Year: 2011
Subjects: Learning Commons

description: The Learning Commons at Auburn University Libraries is a one-stop center, offering the learning resources students use most, all located in a flexible physical configuration that can be repurposed for many activities and functions. Planning for Auburn’s learning commons incorporated substantial input from students, including a variety of ethnographic exercises. Creating this multi-use facility has resulted in close collaboration and cooperation between four campus units with similar student-focused missions. The Commons has the enthusiastic support of three library partners: the Office of Information Technology (OIT), the University Writing Center, and Study Partners, the campus’s peer tutoring service.
Positivity of oscillatory integrals and Hankel transforms
Creators: name: Cho, Yong-Kum
name: Chung, Seok-Young
name: Park, Young Woong
Publisher: name: arXiv
Year: 2023
Subjects: subject: Classical Analysis and ODEs (math.CA)
subject: FOS: Mathematics
subject: 34C10, 42A38, 44A20, 33C10

description: In consideration of the integral transform whose kernel arises as an oscillatory solution of certain second-order linear differential equation, its positivity is investigated on the basis of Sturm's theory. As applications, positivity criteria are obtained for Hankel transforms as well as trigonometric integrals defined on the positive real line.
description: 19 pages
On the Use of a Water Balance to Evaluate Inter-annual Terrestrial ET Variability
Creators: name: Han, Eun Jin
name: Crow, Wade T.
name: Hain, Christopher R.
name: Anderson, Martha C.
Publisher: name: Columbia University
Year: 2015
Subjects: Hydrologic models--Evaluation
Evapotranspiration--Measurement
Hydrology

description: Accurately measuring interannual variability in terrestrial evapotranspiration ET is a major challenge for efforts to detect trends in the terrestrial hydrologic cycle. Based on comparisons with annual values of terrestrial evapotranspiration derived from a terrestrial water balance analysis, past research has cast doubt on the ability of existing products to accurately capture variability. Using a variety of estimates, this analysis reexamines this conclusion and finds that estimates of variations obtained from a land surface model are more strongly correlated with independently acquired from thermal infrared remote sensing than derived from water balance considerations. This tendency is attributed to significant interannual variations in terrestrial water storage neglected by the water balance approach. Overall, results demonstrate the need to reassess perceptions concerning the skill of estimates derived from land surface models and show the value of accurate remotely sensed ET products for the validation of interannual ET.
"It is just a flu": Assessing the Effect of Watch History on YouTube's Pseudoscientific Video Recommendations
Creators: name: Papadamou, Kostantinos
name: Zannettou, Savvas
name: Blackburn, Jeremy
name: Cristofaro, Emiliano De
name: Stringhini, Gianluca
name: Sirivianos, Michael
Publisher: name: Zenodo
Year: 2020

description: YouTube has revolutionized the way people discover and consume videos, becoming one of the primary news sources for Internet users. Since content on YouTube is generated by its users, the platform is particularly vulnerable to misinformative and conspiratorial videos. Even worse, the role played by YouTube's recommendation algorithm in unwittingly promoting questionable content is not well understood, and could potentially make the problem even worse. This can have dire real-world consequences, especially when pseudoscientific content is promoted to users at critical times, e.g., during the COVID-19 pandemic.
 In this paper, we set out to characterize and detect pseudoscientific misinformation on YouTube. We collect 6.6K videos related to COVID-19, the flat earth theory, the anti-vaccination, and anti-mask movements; using crowdsourcing, we annotate them as pseudoscience, legitimate science, or irrelevant. We then train a deep learning classifier to detect pseudoscientific videos with an accuracy of 76.1%. Next, we quantify user exposure to this content on various parts of the platform (i.e., a user's homepage, recommended videos while watching a specific video, or search results) and how this exposure changes based on the user's watch history. We find that YouTube's recommendation algorithm is more aggressive in suggesting pseudoscientific content when users are searching for specific topics, while these recommendations are less common on a user's homepage or when actively watching pseudoscientific videos. Finally, we shed light on how a user's watch history substantially affects the type of recommended videos.
The SOPHIE search for northern extrasolar planets: VI. Three new hot Jupiters in multi-planet extrasolar systems
Creators: name: Moutou, C.
name: Hebrard, G.
name: Bouchy, F.
name: Arnold, L.
name: Santos, N. C.
name: Astudillo-Defru, N.
name: Boisse, I.
name: Bonfils, X.
name: Borgniet, S.
name: Delfosse, X.
name: Diaz, R. F.
name: Ehrenreich, D.
name: Forveille, T.
name: Gregorio, J.
name: Labrevoir, O.
name: Lagrange, A. M.
name: Montagnier, G.
name: Montalto, M.
name: Pepe, F.
name: Sahlmann, J.
name: Santerne, A.
name: Segransan, D.
name: Udry, S.
name: Vanhuysse, M.
Publisher: name: arXiv
Year: 2013
Subjects: subject: Earth and Planetary Astrophysics (astro-ph.EP)
subject: FOS: Physical sciences

description: We present high-precision radial-velocity measurements of three solar-type stars: HD 13908, HD 159243, and HIP 91258. The observations were made with the SOPHIE spectrograph at the 1.93-m telescope of Observatoire de Haute-Provence (France). They show that these three bright stars host exoplanetary systems composed of at least two companions. HD 13908 b is a planet with a minimum mass of 0.865+-0.035 Mjup, on a circular orbit with a period of 19.382+-0.006 days. There is an outer massive companion in the system with a period of 931+-17 days, e = 0.12+-0.02, and a minimum mass of 5.13+-0.25 Mjup. The star HD 159243, also has two detected companions with respective masses, periods, and eccentricities of Mp = 1.13+-0.05 and 1.9+-0.13 Mjup, $P$ = 12.620+-0.004 and 248.4+-4.9 days, and e = 0.02+-0.02 and 0.075+-0.05. Finally, the star HIP 91258 has a planetary companion with a minimum mass of 1.068+-0.038 Mjup, an orbital period of 5.0505+-0.0015 days, and a quadratic trend indicating an outer planetary or stellar companion that is as yet uncharacterized. The planet-hosting stars HD 13908, HD 159243, and HIP 91258 are main-sequence stars of spectral types F8V, G0V, and G5V, respectively, with moderate activity levels. HIP 91258 is slightly over-metallic, while the two other stars have solar-like metallicity. The three systems are discussed in the frame of formation and dynamical evolution models of systems composed of several giant planets.
description: accepted in A&A
Topological invariants of vortices, merons, skyrmions, and their combinations in continuous and discrete systems
Creators: name: Rybakov, Filipp N.
name: Eriksson, Olle
name: Kiselev, Nikolai S.
Publisher: name: arXiv
Year: 2024
Subjects: subject: Mesoscale and Nanoscale Physics (cond-mat.mes-hall)
subject: FOS: Physical sciences

description: Magnetic vortices and skyrmions are typically characterized by distinct topological invariants. This work presents a unified approach for the topological classification of these textures, encompassing isolated objects and configurations where skyrmions and vortices coexist. Using homotopy group analysis, we derive topological invariants that form the free abelian group, $\mathbb{Z}\times\mathbb{Z}$. We provide an explicit method for calculating the corresponding integer indices in continuous and discrete systems. This unified classification framework extends beyond magnetism and is applicable to physical systems in general.
Ctenomys opimus Wagner 1848
Creators: name: Honacki, James H.
name: Kinman, Kenneth E.
name: Koeppl, James W.
Publisher: name: Zenodo
Year: 1982
Subjects: Biodiversity
Taxonomy
Animalia
Chordata
Mammalia
Rodentia
Ctenomyidae
Ctenomys
Ctenomys opimus

description: Ctenomys opimus Wagner, 1848. Arch. Naturg., 1:75. TYPE LOCALITY: Bolivia, Oruro Dept., Sajama. DISTRIBUTION: N.W. Argentina; S.W. Bolivia; S. Peru; N. Chile. COMMENT: May be conspecific with fulvus; opimus and fulvus cannot be separated on the basis of karyotypes; see Gallardo, 1979, Arch. Biol. Med. Exp., 12:80. ISIS NUMBER: 5301410027001016001.
description: Published as part of James H. Honacki, Kenneth E. Kinman & James W. Koeppl, 1982, Order Rodentia (Part 6), pp. 560-594 in Mammal Species of the World (1 st Edition), Lawrence, Kansas, USA :Alien Press, Inc. & The Association of Systematics Collections on page 584, DOI: 10.5281/zenodo.7353039
description: {"references": ["Gallardo, M. 1979. Las especies chilenas de Ctenomys (Rodentia, Octodontidae). I. Estabilidad cariotipica. Archivos de Biologia y Medicina Experimentales (Santiago), 12: 71 - 82."]}
British Columbia Legislative Assembly sessional clipping book (1909-02)
Creators: name: :Unav
Publisher: name: University of Victoria Libraries
Year: 2022
Subjects: subject: British Columbia. Legislative Assembly
valueUri: http://id.worldcat.org/fast/600765
subject: Law
valueUri: http://id.worldcat.org/fast/993678
subject: FOS: Law
subject: Politics and government
valueUri: http://id.worldcat.org/fast/1919741

description: These Sessional Clippings books cover the period 1891 to 1972, and include newspaper accounts written by various legislative reporters who covered debates occurring in the British Columbia Legislative Assembly. Transcripts of debates of the Legislative Assembly (Hansard) were not published in B.C. until 1970; hence these "Sessional Clipping Books" augment the "Journals", the record of daily proceedings of the Legislative Assembly. Selected clippings from various newspapers including the Vancouver Sun, the Vancouver Province, the Colonist, and the Times newspapers, relating to the newspaper reports concerning activities of the Legislature. The original sessional clippings books comprise 351 ledger size print volumes, held at the Legislative Library in Victoria BC. The print volumes were microfilmed onto 26 reels in 1977 under a Tri University Libraries (TRIUL) project by Precision Micrographic Services (Vancouver, B.C.), with the permission of the Legislative Library, Victoria, British Columbia. This digital collection was created by scanning the 26 microfilm reels.
Product Dynamics and Aggregate Shocks: Evidence from Japanese Product and Firm Level Data
Creators: name: Dekle, Robert
name: Kawakami, Atsushi
name: Kitoyaki, Nobuhiro
name: Miyagawa, Tsutomu
Publisher: name: Columbia University
Year: 2016
Subjects: Industrial productivity
Expenditures, Public
Equilibrium (Economics)
Macroeconomics
Commerce
Business

description: Conceptually linking product adding and dropping to business cycles goes back to at least Shumpeter. We examine the effects of shocks to aggregate productivity, foreign demand, government expenditures, and demand for foreign liquidity on the dynamics of products of heterogeneous firms. Our structural empirical specifications connecting macroeconomic shocks to product dynamics are based on a neoclassical dynamic general equilibrium model (Dekle, Kiyotaki, and Jeong, 2014). We first construct unique firm level data on products and exports from the Japanese Census of Manufactures. The data are more disaggregated than comparable U.S. data and available at the annual frequency (while U.S. product level data are only available at five year intervals), which makes our data more suitable for examining the interaction between the business cycle and firm-product dynamics. We find that positive macroeconomic shocks in total factor productivity, government demand, and real exchange rates strongly increase the number of products.
Remarks on generalized uncertainty principle induced from constraint system
Creators: name: Eune, Myungseok
name: Kim, Wontae
Publisher: name: arXiv
Year: 2013
Subjects: subject: High Energy Physics - Theory (hep-th)
subject: FOS: Physical sciences

description: The extended commutation relations for a generalized uncertainty principle have been based on the assumption of the minimal length in position. Instead of this assumption, we start with a constrained Hamiltonian system described by the conventional Poisson algebra and then impose appropriate second class constraints to this system. Consequently, we can show that the consistent Dirac brackets for this system are nothing but the extended commutation relations describing the generalized uncertainty principle.
description: 6 pages, no figure, references added, title changed
Ctenomys perrensis Thomas 1898
Creators: name: Honacki, James H.
name: Kinman, Kenneth E.
name: Koeppl, James W.
Publisher: name: Zenodo
Year: 1982
Subjects: Biodiversity
Taxonomy
Animalia
Chordata
Mammalia
Rodentia
Ctenomyidae
Ctenomys
Ctenomys perrensis

description: Ctenomys perrensis Thomas, 1898. Ann. Mag. Nat. Hist., ser. 6, 18:311. TYPE LOCALITY: Argentina, Corrientes Prov., Goya. DISTRIBUTION: Corrientes and Misiones Provs. (N.E. Argentina). ISIS NUMBER: 5301410027001017001.
description: Published as part of James H. Honacki, Kenneth E. Kinman & James W. Koeppl, 1982, Order Rodentia (Part 6), pp. 560-594 in Mammal Species of the World (1 st Edition), Lawrence, Kansas, USA :Alien Press, Inc. & The Association of Systematics Collections on page 584, DOI: 10.5281/zenodo.7353039
Ignorance is bliss: General and robust cancellation of decoherence via no-knowledge quantum feedback
Creators: name: Szigeti, Stuart S.
name: Carvalho, Andre R. R.
name: Morley, James G.
name: Hush, Michael R.
Publisher: name: arXiv
Year: 2014
Subjects: subject: Quantum Physics (quant-ph)
subject: Other Condensed Matter (cond-mat.other)
subject: Atomic Physics (physics.atom-ph)
subject: FOS: Physical sciences

description: A "no-knowledge" measurement of an open quantum system yields no information about any system observable; it only returns noise input from the environment. Surprisingly, performing such a no-knowledge measurement can be advantageous. We prove that a system undergoing no-knowledge monitoring has reversible noise, which can be cancelled by directly feeding back the measurement signal. We show how no-knowledge feedback control can be used to cancel decoherence in an arbitrary quantum system coupled to a Markovian reservoir that is being monitored. Since no-knowledge feedback does not depend on the system state or Hamiltonian, such decoherence cancellation is guaranteed to be general, robust and can operate in conjunction with any other quantum control protocol. As an application, we show that no-knowledge feedback could be used to improve the performance of dissipative quantum computers subjected to local loss.
description: 6 pages + 2 pages supplemental material, 3 figures
Sources of polycyclic aromatic hydrocarbons are associated with gene-specific promoter methylation in women with breast cancer
Creators: name: White, Alexandra J.
name: Chen, Jia
name: Teitelbaum, Susan L.
name: McCullough, Lauren E.
name: Xu, Xinran
name: Cho, Yoon Hee
name: Conway, Kathleen
name: Beyea, Jan
name: Stellman, Steven D.
name: Steck, Susan E.
name: Mordukhovich, Irina
name: Eng, Sybil M.
name: Terry, Mary Beth
name: Engel, Lawrence S.
name: Hatch, Maureen
name: Neugut, Alfred I.
name: Hibshoosh, Hanina
name: Santella, Regina M.
name: Gammon, Marilie D.
Publisher: name: Columbia University
Year: 2016
Subjects: Polycyclic aromatic hydrocarbons
Methylation
Tobacco smoke
Air--Pollution--Health aspects
Breast--Cancer--Environmental aspects
Epidemiology
Public health

description: Background: Tobacco smoke, diet and indoor/outdoor air pollution, all major sources of polycyclic aromatic hydrocarbons (PAHs), have been associated with breast cancer. Aberrant methylation may be an early event in carcinogenesis, but whether PAHs influence the epigenome is unclear, particularly in breast tissue where methylation may be most relevant. We aimed to evaluate the role of methylation in the association between PAHs and breast cancer. Methods: In a population-based case-control study, we measured promoter methylation of 13 breast cancer-related genes in breast tumor tissue (n=765–851 cases) and global methylation in peripheral blood (1055 cases/1101 controls). PAH sources (current active smoking, residential environmental tobacco smoke (ETS), vehicular traffic, synthetic log burning, and grilled/smoked meat intake) were evaluated separately. Logistic regression was used to estimate adjusted odds ratios (ORs) and 95% confidence intervals (CIs). Results: When comparing methylated versus unmethylated genes, synthetic log use was associated with increased ORs for CDH1 (OR=2.26, 95%CI=1.06–4.79), HIN1 (OR=2.14, 95%CI=1.34–3.42) and RARβ (OR=1.80, 95%CI=1.16–2.78) and decreased ORs for BRCA1 (OR=0.44, 95%CI=0.30–0.66). Residential ETS was associated with decreased ORs for ESR1 (OR=0.74, 95%CI=0.56–0.99) and CCND2 methylation (OR=0.65, 95%CI=0.44–0.96). Current smoking and vehicular traffic were associated with decreased ORs for DAPK (OR=0.53, 95%CI=0.28–0.99) and increased ORs for TWIST1 methylation (OR=2.79, 95%CI=1.24–6.30), respectively. In controls, synthetic log use was inversely associated with LINE-1 (OR=0.59, 95%CI=0.41–0.86). Discussion: PAH sources were associated with hypo- and hypermethylation at multiple promoter regions in breast tumors and LINE-1 hypomethylation in blood of controls. Methylation may be a potential biologic mechanism for the associations between PAHs and breast cancer incidence.
Dilution in elliptical galaxies: Implications for the relation between metallicity, stellar mass and star formation rate
Creators: name: Yates, Robert M.
name: Kauffmann, Guinevere
Publisher: name: arXiv
Year: 2013
Subjects: subject: Cosmology and Nongalactic Astrophysics (astro-ph.CO)
subject: FOS: Physical sciences

description: We investigate whether gradual dilution of the gas in some elliptical galaxies is the cause of a positive correlation between star formation rate (SFR) and gas-phase metallicity (Zg) at high stellar mass (M*) in the local Universe. To do this, two classes of massive (M* >= 10^10.5 Msun) galaxy are selected from the Sloan Digital Sky Survey (SDSS) and the Munich semi-analytic model of galaxy formation, L-Galaxies. The first class is selected by high specific star formation rates (sSFR) and high Zg, and the second class by low sSFR and low Zg. These criteria roughly distinguish disc-dominant galaxies from metal-poor, elliptical galaxies. In the semi-analytic model, the second class of galaxies obtain low sSFR and low Zg due to gradual dilution of the interstellar medium by accretion of metal-poor gas via infalling clumps and low-mass satellites. This occurs after a merger-induced starburst and the associated supernova feedback have quenched most of the original gas reservoir. A number of signatures of this evolution are present in these model galaxies at z=0, including low gas fractions, large central black holes, elliptical morphologies, old ages, and importantly, low (Zg-Z*) indicating dilution after star formation. Remarkably, all of these properties are also found in low-sSFR, low-Zg, massive galaxies in the SDSS-DR7. This provides strong, indirect evidence that some elliptical galaxies are undergoing gradual dilution after a gas-rich merger in the local Universe. This dilution scenario also explains the positive correlation between SFR and Zg measured in high-M* galaxies, and therefore has consequences for the local fundamental metallicity relation (FMR), which assumes a weak anti-correlation between SFR and Zg above 10^10.5 Msun.
description: 19 pages, 17 figures, 1 table. Submitted to MNRAS
British Columbia Legislative Assembly sessional clipping book (1909-03)
Creators: name: :Unav
Publisher: name: University of Victoria Libraries
Year: 2022
Subjects: subject: Law
valueUri: http://id.worldcat.org/fast/993678
subject: FOS: Law
subject: British Columbia. Legislative Assembly
valueUri: http://id.worldcat.org/fast/600765
subject: Politics and government
valueUri: http://id.worldcat.org/fast/1919741

description: These Sessional Clippings books cover the period 1891 to 1972, and include newspaper accounts written by various legislative reporters who covered debates occurring in the British Columbia Legislative Assembly. Transcripts of debates of the Legislative Assembly (Hansard) were not published in B.C. until 1970; hence these "Sessional Clipping Books" augment the "Journals", the record of daily proceedings of the Legislative Assembly. Selected clippings from various newspapers including the Vancouver Sun, the Vancouver Province, the Colonist, and the Times newspapers, relating to the newspaper reports concerning activities of the Legislature. The original sessional clippings books comprise 351 ledger size print volumes, held at the Legislative Library in Victoria BC. The print volumes were microfilmed onto 26 reels in 1977 under a Tri University Libraries (TRIUL) project by Precision Micrographic Services (Vancouver, B.C.), with the permission of the Legislative Library, Victoria, British Columbia. This digital collection was created by scanning the 26 microfilm reels.
Knowledge Management Practices in the UAE Higher Education Sector
Creators: name: Ajayan, Shalini
Publisher: name: Lancaster University
Year: 2025

description: Knowledge Management (KM), a systematic approach to managing
 organizational knowledge is critical for the HE sector as HEIs are
 regarded as ‘knowledge-intensive’ organisations. Despite its significance,
 the research on KM in the HE sector is relatively at its nascent stage.
 This formed the motivation for this thesis which aimed to first develop an
 empirical assessment KM framework for HE sector through review of both
 generic and HE-specific literature and then apply the framework in the UAE
 HE sector to examine the current state of KM practices, factors (enablers)
 influencing the adoption of those practices and the performance outcomes
 realised through the implementation of KM practices. The study employed a
 sequential explanatory mixed method design comprising of a country-wide
 survey (N=428) and semi-structured interviews (N=20) of academic and
 administrative staff employed in the UAE HE sector. The study results
 revealed that all four enablers (culture, leadership, organization
 structure and strategy, and Information Technology) had a positive and
 significant impact but to varying extents. Information Technology emerged
 as the enabler exerting the highest influence on KM practice adoption. All
 nine KM practices proposed in the study were found to be relevant though
 their extent of implementation differed with Knowledge Acquisition showing
 the highest level of implementation while the practice of Knowledge
 Application was found to be the least implemented practice. KM
 implementation was found to have a positive and significant impact on the
 HEI’s operational and innovation performance. The results also found that
 KM implementation varies across public and private HEIs. The proposed
 validated framework and the findings contribute to the KM literature
 pertinent to the HE sector and future researchers could adapt the
 framework in their respective settings. The study also offers
 recommendations for practitioners and policymakers to facilitate KM
 adoption at an institutional and sectorial level.
Exposure to multiple sources of polycyclic aromatic hydrocarbons and breast cancer incidence
Creators: name: White, Alexandra J.
name: Bradshaw, Patrick T.
name: Herring, Amy H.
name: Teitelbaum, Susan L.
name: Beyea, Jan
name: Stellman, Steven D.
name: Steck, Susan E.
name: Mordukhovich, Irina
name: Eng, Sybil M.
name: Engel, Lawrence S.
name: Conway, Kathleen
name: Hatch, Maureen
name: Neugut, Alfred I.
name: Santella, Regina M.
name: Gammon, Marilie D.
Publisher: name: Columbia University
Year: 2016
Subjects: Polycyclic aromatic hydrocarbons
Tobacco smoke--Health aspects
Indoor air pollution--Health aspects
Breast--Cancer--Environmental aspects
Epidemiology
Public health

description: Background: Despite studies having consistently linked exposure to single-source polycyclic aromatic hydrocarbons (PAHs) to breast cancer, it is unclear whether single sources or specific groups of PAH sources should be targeted for breast cancer risk reduction. Objectives: This study considers the impact on breast cancer incidence from multiple PAH exposure sources in a single model, which better reflects exposure to these complex mixtures. Methods: In a population-based case-control study conducted on Long Island, New York (N = 1508 breast cancer cases/1556 controls), a Bayesian hierarchical regression approach was used to estimate adjusted posterior means and credible intervals (CrI) for the adjusted odds ratios (ORs) for PAH exposure sources, considered singly and as groups: active smoking; residential environmental tobacco smoke (ETS); indoor and outdoor air pollution; and grilled/smoked meat intake. Results: Most women were exposed to PAHs from multiple sources, and the most common included active/passive smoking and grilled/smoked food intake. In multiple-PAH source models, breast cancer incidence was associated with residential ETS from a spouse (OR = 1.20, 95%CrI = 1.03, 1.40) and synthetic firelog burning (OR = 1.29, 95%CrI = 1.06, 1.57); these estimates are similar, but slightly attenuated, to those from single-source models. Additionally when we considered PAH exposure groups, the most pronounced significant associations included total indoor sources (active smoking, ETS from spouse, grilled/smoked meat intake, stove/fireplace use, OR = 1.45, 95%CrI = 1.02, 2.04). Conclusions: Groups of PAH sources, particularly indoor sources, were associated with a 30–50% increase in breast cancer incidence. PAH exposure is ubiquitous and a potentially modifiable breast cancer risk factor.
Patterning edge-like defects and tuning defective areas on the basal plane of ultra-large MoS$_{2}$ monolayers toward hydrogen evolution reaction
Creators: name: Florindo, Bianca Rocha
name: Hasimoto, Leonardo H.
name: de Freitas, Nicolli
name: Candiotto, Graziâni
name: Lima, Erika Nascimento
name: de Lourenço, Cláudia
name: de Araujo, Ana B. S.
name: Ospina, Carlos
name: Bettini, Jefferson
name: Leite, Edson R.
name: Lima, Renato S.
name: Fazzio, Adalberto
name: Capaz, Rodrigo B.
name: Santhiago, Murilo
Publisher: name: arXiv
Year: 2023
Subjects: subject: Materials Science (cond-mat.mtrl-sci)
subject: FOS: Physical sciences

description: The catalytic sites of MoS$_{2}$ monolayers towards hydrogen evolution are well known to be vacancies and edge-like defects. However, it is still very challenging to control the position, size, and defective areas on the basal plane of Mo$S_{2}$ monolayers by most of defect-engineering routes. In this work, the fabrication of etched arrays on ultra-large supported and free-standing MoS$_{2}$ monolayers using focused ion beam (FIB) is reported for the first time. By tuning the Ga+ ion dose, it is possible to confine defects near the etched edges or spread them over ultra-large areas on the basal plane. The electrocatalytic activity of the arrays toward hydrogen evolution reaction (HER) was measured by fabricating microelectrodes using a new method that preserves the catalytic sites. We demonstrate that the overpotential can be decreased up to 290 mV by assessing electrochemical activity only at the basal plane. High-resolution transmission electron microscopy images obtained on FIB patterned freestanding MoS$_{2}$ monolayers reveal the presence of amorphous regions and X-ray photoelectron spectroscopy indicates sulfur excess in these regions. Density-functional theory calculations provide identification of catalytic defect sites. Our results demonstrate a new rational control of amorphous-crystalline surface boundaries and future insight for defect optimization in MoS$_{2}$ monolayers.
description: 10 pages, 5 figures