cometadata/datacite-rtg-text-other-reclassification-records huggingface dataset:
Un-Weyl-ing the Clifford Hierarchy
Creators: name: Pllaha, Tefjol
name: Rengaswamy, Narayanan
name: Tirkkonen, Olav
name: Calderbank, Robert
Publisher: name: arXiv
Year: 2020
Subjects: subject: Quantum Physics (quant-ph)
subject: Information Theory (cs.IT)
subject: FOS: Physical sciences
subject: FOS: Computer and information sciences

description: The teleportation model of quantum computation introduced by Gottesman and Chuang (1999) motivated the development of the Clifford hierarchy. Despite its intrinsic value for quantum computing, the widespread use of magic state distillation, which is closely related to this model, emphasizes the importance of comprehending the hierarchy. There is currently a limited understanding of the structure of this hierarchy, apart from the case of diagonal unitaries (Cui et al., 2017; Rengaswamy et al. 2019). We explore the structure of the second and third levels of the hierarchy, the first level being the ubiquitous Pauli group, via the Weyl (i.e., Pauli) expansion of unitaries at these levels. In particular, we characterize the support of the standard Clifford operations on the Pauli group. Since conjugation of a Pauli by a third level unitary produces traceless Hermitian Cliffords, we characterize their Pauli support as well. Semi-Clifford unitaries are known to have ancilla savings in the teleportation model, and we explore their Pauli support via symplectic transvections. Finally, we show that, up to multiplication by a Clifford, every third level unitary commutes with at least one Pauli matrix. This can be used inductively to show that, up to a multiplication by a Clifford, every third level unitary is supported on a maximal commutative subgroup of the Pauli group. Additionally, it can be easily seen that the latter implies the generalized semi-Clifford conjecture, proven by Beigi and Shor (2010). We discuss potential applications in quantum error correction and the design of flag gadgets.
description: License changed. Accepted to Quantum on 26 Nov 2020
An Overview of Agriculture in the Rural Municipalities of the Lower Souris River Watershed
Creators: name: Harper, Dana
name: Unterschultz, James R.
name: Jeffrey, Scott R.
name: Harper, Dana
name: Unterschultz, James R.
name: Jeffrey, Scott R.
Publisher: name: Unknown
Year: 2008
Subjects: subject: Crop Production/Industries
subject: Land Economics/Use
subject: Livestock Production/Industries
subject: Acreage
subject: Agricultural Land
subject: Cropland

description: A statistical overview of agriculture in the region encompassed by the Lower Souris River Watershed committee was undertaken. The region in the south east corner of the province of Saskatchewan has about 8%of the total number of farms in Saskatchewan, and this has remained relatively consistent since the early 1980s. The actual number of has decreased and Statistics Canada reports that the total number of farms in crop district 1A and 1B in the 2006 census is 1,823 and 1,743, respectively. The area of farms in crop district 1 is currently about 7% of the total area of farms in Saskatchewan. Statistics Canada reports that the total area of farms in crop district 1A and 1B in the 2006 census is 2,687,728 and 2,312,446, respectively. The report also provides an overview of crops grown and livestock numbers. This report is part of an ongoing study of this region.
Computers in Secondary Schools: Educational Games
Creators: name: Romero, Margarida
Publisher: name: arXiv
Year: 2020
Subjects: subject: Physics Education (physics.ed-ph)
subject: Computers and Society (cs.CY)
subject: FOS: Physical sciences
subject: FOS: Computer and information sciences

description: This entry introduces educational games in secondary schools. Educational games include three main types of educational activities with a playful learning intention supported by digital technologies: educational serious games, educational gamification, and learning through game creation. Educational serious games are digital games that support learning objectives. Gamification is defined as the use of "game design elements and game thinking in a non-gaming context" (Deterding et al. 2011, p. 13). Educational gamification is not developed through a digital game but includes game elements for supporting the learning objectives. Learning through game creation is focused on the process of designing and creating a prototype of a game to support a learning process related to the game creation process or the knowledge mobilized through the game creation process. Four modalities of educational games in secondary education are introduced in this entry to describe educational games in secondary education: educational purpose of entertainment games, serious games, gamification, and game design.
Additional file 1 of The PRINTEMPS study: protocol of a cluster-randomized controlled trial of the local promotion of a smartphone application and associated website for the prevention of suicidal behaviors in the adult general population in France
Creators: name: Gandré, Coralie
name: Jeannic, Anaïs Le
name: Marie-Amélie Vinet
name: Turmaine, Kathleen
name: Courtet, Philippe
name: Roelandt, Jean-Luc
name: Vaiva, Guillaume
name: Giraudeau, Bruno
name: Alberti, Corinne
name: Chevreul, Karine
Publisher: name: figshare
Year: 2020
Subjects: subject: Medicine
subject: Genetics
subject: FOS: Biological sciences
subject: Biotechnology
subject: Science Policy
subject: Sociology
subject: FOS: Sociology
subject: 69999 Biological Sciences not elsewhere classified
subject: 111714 Mental Health
subject: FOS: Health sciences
subject: 110309 Infectious Diseases

description: Additional file 1. Standard Protocol Items: Recommendations for Interventional Trials (SPIRIT) Checklist.
Calibration of Google Trends Time Series
Creators: name: West, Robert
Publisher: name: arXiv
Year: 2020
Subjects: subject: Social and Information Networks (cs.SI)
subject: Information Retrieval (cs.IR)
subject: FOS: Computer and information sciences

description: Google Trends is a tool that allows researchers to analyze the popularity of Google search queries across time and space. In a single request, users can obtain time series for up to 5 queries on a common scale, normalized to the range from 0 to 100 and rounded to integer precision. Despite the overall value of Google Trends, rounding causes major problems, to the extent that entirely uninformative, all-zero time series may be returned for unpopular queries when requested together with more popular queries. We address this issue by proposing Google Trends Anchor Bank (G-TAB), an efficient solution for the calibration of Google Trends data. Our method expresses the popularity of an arbitrary number of queries on a common scale without being compromised by rounding errors. The method proceeds in two phases. In the offline preprocessing phase, an "anchor bank" is constructed, a set of queries spanning the full spectrum of popularity, all calibrated against a common reference query by carefully chaining together multiple Google Trends requests. In the online deployment phase, any given search query is calibrated by performing an efficient binary search in the anchor bank. Each search step requires one Google Trends request, but few steps suffice, as we demonstrate in an empirical evaluation. We make our code publicly available as an easy-to-use library at https://github.com/epfl-dlab/GoogleTrendsAnchorBank.
description: Proceedings of the 29th ACM Conference on Information and Knowledge Management (CIKM), 2020
Bethune_etal_2021_FEE_S1_Supplement_Template
Creators: name: Bethune, Elehna
name: Schulz-Kornas, Ellen
name: Lehnert, Kristina
name: Siebert, Ursula
name: Kaiser, Thomas M.
Publisher: name: Universität Hamburg
Year: 2021

description: This is the description of the template used for microwear texture data analysis in the publication “Tooth microwear texture in the Eastern Atlantic harbour seals (Phoca vitulina vitulina) of the German Wadden Sea and its implications for long term dietary and ecosystem changes” by Elehna Bethune, Ellen Schulz-Kornas, Kristina Lehnert, Ursula Siebert and Kaiser M. Thomas, published in Frontiers of Ecology and Evolution on 17 Mar 2021 available via DOI: 10.3389/fevo.2021.644019. Surface measurements originally used with this template (*.mnt file) were saved as *.nms files and were deposited for at least 10 years at the Research Data Repository of the University of Hamburg, Germany.
Ecological Goods and Services Survey Summary Prepared for: Lower Souris Watershed Committee
Creators: name: Entem, Alicia
name: Unterschultz, James R.
name: Jeffrey, Scott R.
name: Entem, Alicia
name: Unterschultz, James R.
name: Jeffrey, Scott R.
Publisher: name: Unknown
Year: 2009
Subjects: subject: Crop Production/Industries
subject: Environmental Economics and Policy
subject: Land Economics/Use
subject: Land Use
subject: Tillage

description: An interview based survey of farm landowners in the south east corner of Saskatchewan was undertaken to evaluate the provision of wildlife habitat by agriculture. Producers were asked to provide management information regarding a piece of their land that was managed as a unit. Within the past ten years there has been a reduction in the conversion of remaining native land to crop land, an increase in conversion of annual crop land to perennial cover crops, an increase in the use of minimum disturbance (no-till) farming, and a decrease in the use of fire on stubble fields and sloughs. Many producers in the area often stated economic reasons for their current land use division. Even ecological reasons (productive capacity of the soil, poor cropping soil, light soil etc.) often had an economic basis. If the land was not productive enough, a management scheme with lower input costs would be adopted. This was commonly demonstrated in this survey by the conversion of marginal land to tame forages. Producers within this region seem willing to adopt farming practices that connect economic sustainability with environmental responsibility. This survey is part of an-on going study of the region.
Association among basal metabolic rate, body composition and pulmonary function in university students
Creators: name: Myat Su Bo
name: Cheah Whye Lian
name: Azhar, Nur Adriana Binti
name: Amran, Muhammad Ashraf Fraiee Bin
name: Xin, Yeo Deng
name: Nurazizah Binti Anis
Publisher: name: Faculty of Medicine Chulalongkorn University
Year: 2021
Subjects: Basal metabolic rate
body composition
pulmonary function
overweight and obese

description: Chulalongkorn Medical Journal, 65, 2, 129-135
Discrete radar ambiguity problems
Creators: name: Bonami, Aline
name: Garrigos, Gustavo
name: Jaming, Philippe
Publisher: name: arXiv
Year: 2005
Subjects: subject: Classical Analysis and ODEs (math.CA)
subject: FOS: Mathematics
subject: 42B10;81S30;94A12

description: In this paper, we pursue the study of the radar ambiguity problem started in \cite{Ja,GJP}. More precisely, for a given function $u$ we ask for all functions $v$ (called \emph{ambiguity partners}) such that the ambiguity functions of $u$ and $v$ have same modulus. In some cases, $v$ may be given by some elementary transformation of $u$ and is then called a \emph{trivial partner} of $u$ otherwise we call it a \emph{strange partner}. Our focus here is on two discrete versions of the problem. For the first one, we restrict the problem to functions $u$ of the Hermite class, $u=P(x)e^{-x^2/2}$, thus reducing it to an algebraic problem on polynomials. Up to some mild restriction satisfied by quasi-all and almost-all polynomials, we show that such a function has only trivial partners. The second discretization, restricting the problem to pulse type signals, reduces to a combinatorial problem on matrices of a special form. We then exploit this to obtain new examples of functions that have only trivial partners. In particular, we show that most pulse type signals have only trivial partners. Finally, we clarify the notion of \emph{trivial partner}, showing that most previous counterexamples are still trivial in some restricted sense.
Effect of using smartphone before bedtime and sleep quality of middle-adulthood officers at Chulalongkorn University
Creators: name: Bhakkhaphorn Booranasuntikul
name: Naowarat Kanchanakhan
Publisher: name: Faculty of Medicine Chulalongkorn University
Year: 2021
Subjects: Sleep quality
smartphone
bedtime
middle-adulthood
PSQI

description: Chulalongkorn Medical Journal, 65, 2, 137-145
Additional file 1 of Food insecurity and the risk of depression in people living with HIV/AIDS: a systematic review and meta-analysis
Creators: name: Getinet Ayano
name: Light Tsegay
name: Melat Solomon
Publisher: name: figshare
Year: 2020
Subjects: subject: Medicine
subject: Physiology
subject: FOS: Biological sciences
subject: Biotechnology
subject: Sociology
subject: FOS: Sociology
subject: 69999 Biological Sciences not elsewhere classified
subject: Science Policy
subject: 111714 Mental Health
subject: FOS: Health sciences

description: Additional file 1: Table S1. The quality of the included studies based on NOS score (9 point score).
Magnetically induced topological transitions of hyperbolic dispersion in biaxial gyrotropic media
Creators: name: Tuz, Vladimir R.
name: Fesenko, Volodymyr I.
Publisher: name: arXiv
Year: 2020
Subjects: subject: Mesoscale and Nanoscale Physics (cond-mat.mes-hall)
subject: Optics (physics.optics)
subject: FOS: Physical sciences

description: Magnetically induced topological transitions of isofrequency surfaces of bulk waves propagating through an unbounded biaxial gyrotropic medium are studied. The medium is constructed from a two-component superlattice composed of magnetized ferrite and semiconductor layers. To derive the constitutive parameters of the gyrotropic medium, a homogenization procedure from the effective medium theory is applied. The study is carried out in the frequency range near the frequency of ferromagnetic resonance, where the magnetic subsystem possesses the properties of natural hyperbolic dispersion. The topological transitions from an open type-I hyperboloid to several intricate hyperbolic-like forms are demonstrated for the extraordinary waves. We reveal how realistic material losses change the form of isofrequency surface characterizing hyperbolic dispersion. The obtained results broaden our knowledge on the possible topologies of isofrequency surfaces that can appear in gyrotropic media influenced by an external static magnetic field.
description: 9 pages, 5 figures
A Variable Infrared Counterpart to the Soft Gamma-ray Repeater SGR 1806-20
Creators: name: Kosugi, George
name: Ogasawara, Ryusuke
name: Terada, Hiroshi
Publisher: name: arXiv
Year: 2005
Subjects: subject: Astrophysics (astro-ph)
subject: FOS: Physical sciences

description: We present K'-band (2.12 micron) imaging observations of the SGR 1806-20 field taken during its very active phase in mid 2004, which reveal brightening of sources within the Chandra X-ray error circle when compared with earlier images obtained in 2002. One source brightened by more than a factor of 2, and so we consider this to be the probable infrared counterpart for SGR 1806-20. The other two sources are located in close proximity to the probable counterpart and show marginal brightening, which may suggest that the high-energy photons emitted from the SGR during its active phase have induced dust sublimation or brightening of the unresolved background around the SGR.
description: Accepted for publication in ApJ Letters. (12 pages, 3 figures)
Additional file 1 of Two-body wear of occlusal splint materials against different antagonists
Creators: name: Kubra Yildiz Domanic
name: Yilmaz Umut Aslan
name: Ozkan, Yasemin
Publisher: name: figshare
Year: 2020
Subjects: subject: Medicine
subject: 69999 Biological Sciences not elsewhere classified
subject: FOS: Biological sciences
subject: Science Policy
subject: Computational Biology

description: Additional file 1.
Fermion Propagator in Quenched QED3 in the light of the Landau-Khalatnikov-Fradkin transformation
Creators: name: Bashir, A.
name: Raya, A.
Publisher: name: arXiv
Year: 2004
Subjects: subject: High Energy Physics - Theory (hep-th)
subject: FOS: Physical sciences

description: We study the gauge dependence of the fermion propagator in quenched QED3 with and without dynamical symmetry breaking in the light of its Landau-Khalatnikov-Fradkin Transformation (LKFT). In the former case, starting with the massive bare propagator in the Landau gauge, we obtain non perturbative propagator in an arbitrary covariant gauge. At the one-loop level it yields exact wavefunction renormalization and correct $(αξ)$ terms for the mass fuction. Also, we obtain valuable information for the higher order perturbative expansion of the propagator. As for the case of dynamical chiral symmetry breaking, we start by approximating the numerical solution to the Schwinger-Dyson equation in Landau gauge in the rainbow approximation in terms of analytic functions. We then LKF transform this result to obtain the dynamically generated fermion propagator in an arbitrary covariant gauge. We find that the results obtained have nice qualitative features. We also extend this exercise to the cases involving more reliable ansätze for the vertex and encounter similar (and improved) qualitative features.
description: 6 pages, 6 figures. Contribution to the Proceedings of QCD Downunder 2004 Workshop, held at the Special Centre for the Subatomic Structure of Matter, University of Adelaide, March, 2004. Uses espcrc2.sty
Gapless Surfaces in Anisotropic Superfluids
Creators: name: Gubankova, E.
name: Mishchenko, E.
name: Wilczek, F.
Publisher: name: arXiv
Year: 2004
Subjects: subject: Superconductivity (cond-mat.supr-con)
subject: High Energy Physics - Phenomenology (hep-ph)
subject: FOS: Physical sciences

description: We demonstrate when p-wave pairing occurs between species whose free Fermi surfaces are mismatched the gap generally vanishes over a two-dimensional surface. We present detailed calculations of condensation energy, superfluid density (Meissner mass) and specific heat for such states. We also consider stability against separation into mixed phases. According to several independent criteria that can be checked at weak coupling, the resulting ``breached'' state appears to be stable over a substantial range of parameters. The simple models we consider are homogeneous in position space, and break rotation symmetry spontaneously. They should be realizable in cold atom systems.
description: 14 pages, 4 figures; v2: edited for publication in Phys. Rev. B
Forecast and Simulation Analysis of Mexican Meat Consumption at the Table Cut Level: Impacts on U.S. Exports.
Creators: name: Lopez, Jose Antonio
name: Malaga, Jaime E.
name: Lopez, Jose Antonio
name: Malaga, Jaime E.
Publisher: name: Unknown
Year: 2009
Subjects: subject: Agribusiness
subject: Agricultural and Food Policy
subject: Consumer/Household Economics
subject: Demand and Price Analysis
subject: Food Consumption/Nutrition/Food Safety
subject: International Relations/Trade
subject: forecast of Mexican meat consumption
subject: forecast of Mexican imports
subject: U.S. meat exports to Mexico
subject: Mexican meat demand elasticities
subject: meat analysis at the table cut level
subject: censored demand system
subject: two-step estimation procedure
subject: stratified sampling

description: An analysis of current and forecasted Mexican meat consumption and imports is presented at the table cut level of disaggregation. The results indicate that most Mexican consumption and imports of table cuts of meats grow at different rates. In addition, Mexico seems to be following the U.S. preferences for beef cuts, but it is not following the U.S. preferences for chicken cuts. The study may help U.S. and Canadian meat exporters in forecasting future exports to Mexico, conducting long-term meat investment decisions, or identifying trends in the consumption of specific table cuts of meats.
description: This is the poster presentation. Please refer to the full paper for details.
Wasserstein barycenters can be computed in polynomial time in fixed dimension
Creators: name: Altschuler, Jason M.
name: Boix-Adsera, Enric
Publisher: name: arXiv
Year: 2020
Subjects: subject: Optimization and Control (math.OC)
subject: Computational Geometry (cs.CG)
subject: Data Structures and Algorithms (cs.DS)
subject: Machine Learning (cs.LG)
subject: FOS: Mathematics
subject: FOS: Computer and information sciences

description: Computing Wasserstein barycenters is a fundamental geometric problem with widespread applications in machine learning, statistics, and computer graphics. However, it is unknown whether Wasserstein barycenters can be computed in polynomial time, either exactly or to high precision (i.e., with $\textrm{polylog}(1/\varepsilon)$ runtime dependence). This paper answers these questions in the affirmative for any fixed dimension. Our approach is to solve an exponential-size linear programming formulation by efficiently implementing the corresponding separation oracle using techniques from computational geometry.
description: 15 pages + refs, 5 figs. Improved exposition. Title has been updated for clarity
The Institutional Learning and Change Initiative: An Introduction
Creators: name: ILAC
name: ILAC
Publisher: name: Unknown
Year: 2005
Subjects: subject: Agricultural and Food Policy
subject: Research and Development/Tech Change/Emerging Technologies
subject: learning
subject: impact
subject: evaluation
subject: CGIAR

description: At a time of rapid environmental, social and technological change, the Institutional Learning and Change (ILAC) Initiative promotes critical reflection and improved ways of working within the Consultative Group on International Agricultural Research (CGIAR). The goal is to enhance the contribution of agricultural research to sustainable poverty reduction. The ILAC Initiative draws on the expanding body of knowledge encompassing complex adaptive systems, innovation processes, organizational learning and program evaluation, and promotes the examination of research paradigms, institutional norms, management practices and professional behaviours. The Initiative aims to improve agricultural research and development efforts in four key areas: a) developing the capacity of researchers and managers to lead their own learning and change efforts; b) promoting the development of management systems and practices that support continuous learning and change; c) supporting an organizational culture of learning and change; and d) fostering donor and system-level support for learning and change initiatives in CGIAR centres and programs. This Brief outlines the rationale for ILAC within the CGIAR, highlights the main features of the Initiative and briefly describes the expected results and benefits for the CGIAR.
On gravitational-wave spectroscopy of massive black holes with the space interferometer LISA
Creators: name: Berti, Emanuele
name: Cardoso, Vitor
name: Will, Clifford M.
Publisher: name: arXiv
Year: 2005
Subjects: subject: General Relativity and Quantum Cosmology (gr-qc)
subject: Astrophysics (astro-ph)
subject: High Energy Physics - Theory (hep-th)
subject: FOS: Physical sciences

description: Newly formed black holes are expected to emit characteristic radiation in the form of quasi-normal modes, called ringdown waves, with discrete frequencies. LISA should be able to detect the ringdown waves emitted by oscillating supermassive black holes throughout the observable Universe. We develop a multi-mode formalism, applicable to any interferometric detectors, for detecting ringdown signals, for estimating black hole parameters from those signals, and for testing the no-hair theorem of general relativity. Focusing on LISA, we use current models of its sensitivity to compute the expected signal-to-noise ratio for ringdown events, the relative parameter estimation accuracy, and the resolvability of different modes. We also discuss the extent to which uncertainties on physical parameters, such as the black hole spin and the energy emitted in each mode, will affect our ability to do black hole spectroscopy.
description: 44 pages, 21 figures, 10 tables. Minor changes to match version in press in Phys. Rev. D
Innovation Systems: Implications for agricultural policy and practice
Creators: name: Hall, Andrew
name: Mytelka, Lynn
name: Oyeyinka, Banji
name: Hall, Andrew
name: Mytelka, Lynn
name: Oyeyinka, Banji
Publisher: name: Unknown
Year: 2005
Subjects: subject: Agricultural and Food Policy
subject: Research and Development/Tech Change/Emerging Technologies
subject: innovation
subject: systems
subject: agricultural Research
subject: adaptation

description: Farmers and businesses need to adapt constantly if they are to survive and compete in the rapidly evolving environment associated with the contemporary agricultural sector. Rethinking agricultural research as part of a dynamic system of innovation could help to design ways of creating and sustaining conditions that will support the process of adaptation and innovation. This approach involves developing the working styles and practices of individuals and organizations and the incentives, support structures and policy environments that encourage innovation. Previous efforts to support agricultural sector innovation largely targeted agricultural policy and research organizations. The systems approach recognizes that innovation takes place through the interaction of a broader set of organizations and activities. These patterns of interaction and working styles and practices – or institutions as they are referred to by social scientists – need to adapt continuously if they are to meet the changing demands of the evolving agricultural sector. Institutional learning is central to this process and will ensure research organizations remain relevant and continue to introduce innovations that impact positively on the livelihoods of the poor.
Scattering of a Klein-Gordon particle by a Woods-Saxon potential
Creators: name: Rojas, Clara
name: Villalba, Victor M.
Publisher: name: arXiv
Year: 2005
Subjects: subject: High Energy Physics - Theory (hep-th)
subject: Mathematical Physics (math-ph)
subject: FOS: Physical sciences

description: We solve the Klein-Gordon equation in the presence of a spatially one-dimensional Woods-Saxon potential. The scattering solutions are obtained in terms of hypergeometric functions and the condition for the existence of transmission resonances is derived. It is shown how the zero-reflection condition depends on the shape of the potential.
description: 10 pages, Revtex. To appear in Phys. Rev. A
Applications of Massive Integrable Quantum Field Theories to Problems in Condensed Matter Physics
Creators: name: Essler, Fabian H. L.
name: Konik, Robert M.
Publisher: name: arXiv
Year: 2004
Subjects: subject: Strongly Correlated Electrons (cond-mat.str-el)
subject: High Energy Physics - Theory (hep-th)
subject: FOS: Physical sciences

description: We review applications of the sine-Gordon model, the O(3) non-linear sigma model, the U(1) Thirring model, and the O(N) Gross--Neveu model to quasi one-dimensional quantum magnets, Mott insulators, and carbon nanotubes. We focus upon the determination of dynamical response functions for these problems. These quantities are computed by means of form factor expansions of quantum correlation functions in integrable quantum field theories. This approach is reviewed here in some detail.
description: 150 pages, 35 figures, published in the I. Kogan Memorial Volume by World Scientific
Factors predicting chemotherapy induced peripheral neuropathy in breast cancer patients receiving neurotoxic chemotherapy
Creators: name: Sunet Jiwpanya
name: Chongjit Saneha
name: Wimolrat Puwarawuttipanit
name: Pongwut Danchaivijitr
Publisher: name: Faculty of Medicine Chulalongkorn University
Year: 2021
Subjects: Neurotoxic chemotherapy
chemotherapy induced peripheral neuropathy
predictor
breast cancer

description: Chulalongkorn Medical Journal, 65, 2, 155-163
Simultaneous inference for generalized linear mixed models with informative dropout and missing covariates
Creators: name: Wu, Kunling
Publisher: name: University of British Columbia
Year: 2009

description: Generalized linear mixed effects models (GLMMs) are popular in many longitudinal studies. In these studies, however, missing data problems arise frequently, which makes statistical analyses more complicated. In this thesis, we propose an exact method and an approximate method for GLMMs with informative dropouts and missing covariates, and provide a unified approach for simultaneous inference. Both methods are implemented by Monte Carlo EM algorithms. The approximate method is based on Taylor series expansion, and it avoids sampling the random effects in the E-step. Thus, the approximate method may be computationally more efficient when the dimension of random effects is not small. We also briefly discuss other methods for accelerating the EM algorithms. To illustrate the proposed methods, we analyze two real datasets, a AIDS 315 dataset and a dataset from a parent bereavement project, using these methods. A simulation study is conducted to evaluate the performance of the proposed methods under various situations.
Utilization of hearing aids for the underprivileged at Sisaket Hospital under Thai Red Cross Hearing Aids Project
Creators: name: Kanda Limitlaohaphan
Publisher: name: Faculty of Medicine Chulalongkorn University
Year: 2021
Subjects: Hearing loss
hearing aid
use
attitude
elderly

description: Chulalongkorn Medical Journal, 65, 2, 165-171
An X-ray Outburst from the Rapidly Accreting Young Star That Illuminates McNeil's Nebula
Creators: name: Kastner, J. H.
name: Richmond, M.
name: Grosso, N.
name: Weintraub, D. A.
name: Simon, T.
name: Frank, A.
name: Hamaguchi, K.
name: Ozawa, H.
name: Henden, A.
Publisher: name: arXiv
Year: 2004
Subjects: subject: Astrophysics (astro-ph)
subject: FOS: Physical sciences

description: Young, low-mass stars are luminous X-ray sources whose powerful X-ray flares may exert a profound influence over the process of planet formation. The origin of such emission is uncertain. Although many or perhaps most recently formed, low-mass stars emit X-rays as a consequence of solar-like coronal activity, it has also been suggested that X-ray emission may be a direct result of mass accretion onto the forming star. Here we report X-ray imaging spectroscopy observations which reveal a factor ~50 increase in the X-ray flux from a young star that is presently undergoing a spectacular optical/IR outburst. The outburst is thought to be due to the sudden onset of a phase of rapid accretion. The coincidence of a surge in X-ray brightness with the optical/IR eruption demonstrates that strongly enhanced high-energy emission from young stars can occur as a consequence of high accretion rates. We suggest that such accretion- enhanced X-ray emission from erupting young stars may be short-lived, because intense star-disk magnetospheric interactions are quenched rapidly by the subsequent accretion flood.
description: 15 pages, 3 figures; published in Nature
Precoloring co-Meyniel graphs
Creators: name: Jost, Vincent
name: Lévêque, Benjamin
name: Maffray, Frédéric
Publisher: name: arXiv
Year: 2005
Subjects: subject: Discrete Mathematics (cs.DM)
subject: FOS: Computer and information sciences

description: The pre-coloring extension problem consists, given a graph $G$ and a subset of nodes to which some colors are already assigned, in finding a coloring of $G$ with the minimum number of colors which respects the pre-coloring assignment. This can be reduced to the usual coloring problem on a certain contracted graph. We prove that pre-coloring extension is polynomial for complements of Meyniel graphs. We answer a question of Hujter and Tuza by showing that ``PrExt perfect'' graphs are exactly the co-Meyniel graphs, which also generalizes results of Hujter and Tuza and of Hertz. Moreover we show that, given a co-Meyniel graph, the corresponding contracted graph belongs to a restricted class of perfect graphs (``co-Artemis'' graphs, which are ``co-perfectly contractile'' graphs), whose perfectness is easier to establish than the strong perfect graph theorem. However, the polynomiality of our algorithm still depends on the ellipsoid method for coloring perfect graphs.
Searching for the dual of the Maxwell-Chern-Simons model minimally coupled to dynamical U(1) charged matter
Creators: name: Guimarães, M. S.
name: Mariz, T.
name: Menezes, R.
name: Wotzasek, C.
Publisher: name: arXiv
Year: 2005
Subjects: subject: High Energy Physics - Theory (hep-th)
subject: FOS: Physical sciences

description: The possibility of dual equivalence between the self-dual and the Maxwell-Chern-Simons (MCS) models when the latter is coupled to dynamical, U(1) fermionic charged matter is examined. The proper coupling in the self-dual model is then disclosed using the iterative gauge embedding approach. We found that the self-dual potential needs to couple directly to the Chern-Kernel of the source in order to establish this equivalence besides the need for a self-interaction term to render the matter sector unchanged.
description: 4 pages, RevTeX, new references, accepted for publication on Phys. Lett. B
New bounds on macroscopic scalar-field topological defects from non-transient signatures due to environmental dependence and spatial variations of the fundamental constants
Creators: name: Stadnik, Yevgeny V.
Publisher: name: arXiv
Year: 2020
Subjects: subject: High Energy Physics - Phenomenology (hep-ph)
subject: Cosmology and Nongalactic Astrophysics (astro-ph.CO)
subject: General Relativity and Quantum Cosmology (gr-qc)
subject: Atomic Physics (physics.atom-ph)
subject: FOS: Physical sciences

description: We point out that in models of macroscopic topological defects composed of one or more scalar fields that interact with standard-model fields via scalar-type couplings, the back-action of ambient matter on the scalar field(s) produces an environmental dependence of the fundamental constants of nature, as well as spatial variations of the fundamental constants in the vicinity of dense bodies such as Earth due to the formation of a "bubble-like" defect structure surrounding the dense body. In sufficiently dense environments, spontaneous symmetry breaking may be inhibited altogether for $ϕ^2$ interactions, potentially delaying the cosmological production of topological defects. We derive bounds on non-transient variations of the fundamental constants from torsion-pendulum experiments that search for equivalence-principle-violating forces, experiments comparing the frequencies of ground- and space-based atomic clocks, as well as ground-based clocks at different heights in the recent Tokyo Skytree experiment, and measurements comparing atomic and molecular transition frequencies in terrestrial and low-density astrophysical environments. Our results constrain the present-day mass-energy fraction of the Universe due to a network of infinite domain walls produced shortly after the BBN or CMB epochs to be $Ω_{\textrm{walls},0} \ll 10^{-10}$ for the symmetron model with a $ϕ^4$ potential and $ϕ^2$ interactions, improving over CMB quadrupolar temperature anisotropy bounds by at least 5 orders of magnitude. Our newly derived bounds on domain walls with $ϕ^2$ interactions via their effects of non-transient variations of the fundamental constants are significantly more stringent than previously reported clock- and cavity-based limits on passing domain walls via transient signatures and previous bounds from different types of non-transient signatures, under the same set of assumptions.
description: 47 pages, 7 figures, version accepted for publication in PRD
scripts_for_Psi-Phi
Creators: name: Jiejie Li
Publisher: name: figshare
Year: 2020
Subjects: subject: 60102 Bioinformatics
subject: FOS: Computer and information sciences
subject: 60503 Microbial Genetics
subject: FOS: Biological sciences

description: This is a manually modified pipeline based on the program suite Psi-Phi (Lerat and Ochman, 2004), which identifies pseudogenes by doing tblastn within a cluster of closely related genomes.
A transiting extrasolar giant planet around the star OGLE-TR-10
Creators: name: Konacki, Maciej
name: Torres, Guillermo
name: Sasselov, Dimitar D.
name: Jha, Saurabh
Publisher: name: arXiv
Year: 2004
Subjects: subject: Astrophysics (astro-ph)
subject: FOS: Physical sciences

description: We report a transiting extrasolar giant planet around the star OGLE-TR-10 (orbital period = 3.1 days), which was uncovered as a candidate by the OGLE team in their photometric survey towards the Galactic center (Udalski et al, 2002a). We observed OGLE-TR-10 spectroscopically over a period of two years (2002-2004) using the HIRES instrument with an iodine cell on the Keck I telescope, and measured small radial velocity variations that are consistent with the presence of a planetary companion. This confirms the earlier identification of OGLE-TR-10b by our team and also recently by Bouchy et al (2004a) as a possible planet. Additionally, in this paper we are able to rule out a blend scenario as an alternative explanation. From an analysis combining all available radial velocity measurements with the OGLE light curve we find that OGLE-TR-10b has a mass of 0.57+/-0.12 MJup and a radius of 1.24+/-0.09 RJup. These parameters bear close resemblance to those of the first known transiting extrasolar planet, HD 209458b.
description: accepted to Astrophysical Journal
Combined Analysis of Two- and Three-Particle Correlations in q,p-Bose Gas Model
Creators: name: Gavrilik, Alexandre M.
Publisher: name: arXiv
Year: 2005
Subjects: subject: High Energy Physics - Phenomenology (hep-ph)
subject: Statistical Mechanics (cond-mat.stat-mech)
subject: High Energy Physics - Theory (hep-th)
subject: Nuclear Experiment (nucl-ex)
subject: Nuclear Theory (nucl-th)
subject: FOS: Physical sciences

description: q-deformed oscillators and the q-Bose gas model enable effective description of the observed non-Bose type behavior of the intercept ("strength") $λ^{(2)}\equiv C^{(2)}(K,K)-1$ of two-particle correlation function $C^{(2)}(p_1,p_2)$ of identical pions produced in heavy-ion collisions. Three- and n-particle correlation functions of pions (or kaons) encode more information on the nature of the emitting sources in such experiments. And so, the q-Bose gas model was further developed: the intercepts of n-th order correlators of q-bosons and the n-particle correlation intercepts within the q,p-Bose gas model have been obtained, the result useful for quantum optics, too. Here we present the combined analysis of two- and three-pion correlation intercepts for the q-Bose gas model and its q,p-extension, and confront with empirical data (from CERN SPS and STAR/RHIC) on pion correlations. Similar to explicit dependence of $λ^{(2)}$ on mean momenta of particles (pions, kaons) found earlier, here we explore the peculiar behavior, versus mean momentum, of the 3-particle correlation intercept $λ^{(3)}(K)$. The whole approach implies complete chaoticity of sources, unlike other joint descriptions of two- and three-pion correlations using two phenomenological parameters (e.g., core-halo fraction plus partial coherence of sources).
description: Published in SIGMA (Symmetry, Integrability and Geometry: Methods and Applications) at http://www.emis.de/journals/SIGMA/
IMPROVING THE PREVENTION OF ILLEGAL TRAFFICKING AND OTHER ACTIONS COMMITTED FOR THE PURPOSE OF TRAFFICKING NARCOTIC DRUGS OR PSYCHOTROPIC SUBSTANCES
Creators: name: Rashidov, Rustam
Publisher: name: Zenodo
Year: 2025

description: This article analyzes research on improving the prevention of illegal trafficking and other acts committed for the purpose of trafficking narcotic drugs or psychotropic substances, and the author develops proposals and recommendations.
Higher-order Topological Anderson Insulators
Creators: name: Yang, Yan-Bin
name: Li, Kai
name: Duan, L. -M.
name: Xu, Yong
Publisher: name: arXiv
Year: 2020
Subjects: subject: Mesoscale and Nanoscale Physics (cond-mat.mes-hall)
subject: Disordered Systems and Neural Networks (cond-mat.dis-nn)
subject: FOS: Physical sciences

description: We study disorder effects in a two-dimensional system with chiral symmetry and find that disorder can induce a quadrupole topological insulating phase (a higher-order topological phase with quadrupole moments) from a topologically trivial phase. Their topological properties manifest in a topological invariant defined based on effective boundary Hamiltonians, the quadrupole moment, and zero-energy corner modes. We find gapped and gapless topological phases and a Griffiths regime. In the gapless topological phase, all the states are localized, while in the Griffiths regime, the states at zero energy become multifractal. We further apply the self-consistent Born approximation to show that the induced topological phase arises from disorder renormalized masses. We finally introduce a practical experimental scheme with topoelectrical circuits where the predicted topological phenomena can be observed by impedance measurements. Our work opens the door to studying higher-order topological Anderson insulators and their localization properties.
description: 14 pages, 11 figures
Learning-oriented Evaluation: A tool for promoting institutional learning and program improvement
Creators: name: Watts, Jamie
name: Watts, Jamie
Publisher: name: Unknown
Year: 2005
Subjects: subject: Agricultural and Food Policy
subject: Research and Development/Tech Change/Emerging Technologies
subject: impact Assessment
subject: monitoring
subject: CGIAR
subject: evaluation
subject: learning

description: Evaluation processes of all types, including monitoring, review and impact assessment, offer unique opportunities for learning and provide useful feedback on what works and what doesn’t, and the reasons for success or failure. Involving staff members, partners and beneficiaries in the evaluation process allows them to reflect on their work, revisit their understanding of the project’s goals and activities, assess their effectiveness and take ownership of the evaluation findings. The knowledge created and the lessons learned through evaluation subsequently provide a basis for better project planning and implementation. This Brief outlines an evaluation approach that promotes learning and program improvement; it contrasts this approach with accountability-focused evaluation and it provides an example of learning-oriented evaluation from within the Consultative Group on International Agricultural Research (CGIAR).
Collaborative Agreements: A ‘how to’ guide
Creators: name: Henson-Apollonio, Victoria
name: Henson-Apollonio, Victoria
Publisher: name: Unknown
Year: 2005
Subjects: subject: Research and Development/Tech Change/Emerging Technologies
subject: partnership
subject: Collaboration
subject: agreements

description: Partnerships can be an extremely effective way to harness additional skills and resources and minimize costs. Collaboration allows scientists (and other partners) to access a broad range of expertise and fosters a multi-disciplinary approach, both of which are often required when tackling complex research issues. However, it may be difficult to make the most of collaborative agreements, since different partners may have different objectives and approaches and misunderstandings can occur.
The psychometric property testing of the Children's Yale-Brown Obsessive Compulsive Scale (CY-BOCS): Thai version
Creators: name: Wangsuk Wittayapanyanond
name: Nuttorn Pityaratstian
name: Napakkawat Buathong
Publisher: name: Faculty of Medicine Chulalongkorn University
Year: 2021
Subjects: Children's Yale-Brown Obsessive Compulsive Scale
Thai version
content validity
reliability

description: Chulalongkorn Medical Journal, 65, 2, 173-178
Cost-effectiveness of screening for lung cancer in a high risk cohort using automated sputum cytometry
Creators: name: Slivinskas, Jennifer
Publisher: name: University of British Columbia
Year: 2009

description: Lung cancer continues to be the leading cause of cancer death in Canada. Thirty percent of cancer deaths in men and one-quarter in women are due to lung cancer alone. Prognosis is better for patients diagnosed with early stage lung cancer (>80% 5 year relative survival) than those with late stage cancer (<10% 5 year relative survival). Screening for early stage lung cancer, before the onset on clinical symptoms, leads to a reduction in risk of invasive cancer. In order for a cancer screening programme to be recommended as a cancer control strategy, certain fundamental criteria must be fulfilled, one of which is the cost-effectiveness of the proposed screening test. To facilitate funding allocations of scarce resources across health care programs, economic evaluation models are used to compare the cost-effectiveness of different health interventions. In this model, the cost-utility of using automated sputum cytometry (ASC) versus spiral CT alone as a first step in screening for early stage lung cancer is determined. ASC consists of a high-resolution quantitative microscopy system that analyzes the concentration and distribution of DNA and chromatin structures within the cell nucleus of sputum cells. This will determine the likelihood of lung cancer presence in the particular patient. ASC followed by computed tomography (CT) scanning is hypothesized to be less costly with improved prognosis from early detection of disease. Using a computer-simulated model, a hypothetical cohort of patients at high risk for lung cancer was screened using ASC as a first step in the screening algorithm. The incremental cost-utility was determined for 5-year annual screening using ASC and CT compared to CT screening alone and no screening. Results show ASC is moderately cost-effective with an incremental cost-utility (compared with no screening) of $54,923/QALY (2002 CDN$). Using the most favourable assumptions for the model, the cost-effectiveness improved to $34,388/QALY. Comparatively, screening with CT alone was a weakly dominated strategy. Sensitivity analyses showed the most influential parameters to be specificity of the ASC test and prevalence of disease. Despite certain limitations with the study, a very conservative approach to treatment and costs was adopted in the model and ASC shows promise as a cost-effective lung cancer screening tool.
Innovation Histories: A method from learning from experience
Creators: name: Douthwaite, Boru
name: Ashby, Jacqueline
name: Douthwaite, Boru
name: Ashby, Jacqueline
Publisher: name: Unknown
Year: 2005
Subjects: subject: Agricultural and Food Policy
subject: Research and Development/Tech Change/Emerging Technologies
subject: Innovation
subject: histories
subject: learning
subject: change
subject: ILAC

description: Preparing an ‘innovation history’ is a method for recording and reflecting on an innovation process. People who have been involved in the innovation jointly construct a detailed written account (sometimes referred to as a ‘learning history’) based on their recollections and on available documents. The process of preparing this history stimulates discussion, reflection and learning amongst stakeholders. Subsequent planning can build on the lessons learned, formulate a shared vision and act as a catalyst for change. Based on the initial detailed account of the innovation process, more concise informational products can be prepared that summarize the innovation process for wider dissemination of findings. These may include public awareness materials, policy briefs or articles in professional journals.