cometadata/datacite-rtg-text-other-reclassification-records huggingface dataset:
Hadronic Parity Violation: an Analytic Approach
Creators: name: Holstein, Barry R.
Publisher: name: arXiv
Year: 2006
Subjects: subject: Nuclear Theory (nucl-th)
subject: High Energy Physics - Phenomenology (hep-ph)
subject: FOS: Physical sciences

description: Using a recent reformulation of the analysis of nuclear parity-violation (PV) within the framework of effective field theory (EFT), we show how predictions for parity-violating observables in low-energy light hadronic systems can be understood in an analytic fashion. It is hoped that such an analytic approach may encourage additional experimental work as well as add to the understanding of such parity-violation phenomena, which is all too often obscured by its description in terms of numerical results obtained from complex two-body potential codes.
description: 49 pages, 4 figures, dedicated to the memory of Dubravko Tadic
Tensor interaction contributions to single-particle energies
Creators: name: Brown, B. A.
name: Duguet, T.
name: Otsuka, T.
name: Abe, D.
name: Suzuki, T.
Publisher: name: arXiv
Year: 2006
Subjects: subject: Nuclear Theory (nucl-th)
subject: FOS: Physical sciences

description: We calculate the contribution of the nucleon-nucleon tensor interaction to single-particle energies with finite-range $ G $ matrix potentials and with zero-range Skyrme potentials. The Skx Skyrme parameters including the zero-range tensor terms with strengths calibrated to the finite-range results are refitted to nuclear properties. The fit allows the zero-range proton-neutron tensor interaction as calibrated to the finite-range potential results and that gives the observed change in the single-particle gap $ε$(h$_{11/2}$)-$ε$(g$_{7/2}$) going from $^{114}$Sn to $^{132}$Sn. However, the experimental $\ell$ dependence of the spin-orbit splittings in $^{132}$Sn and $^{208}$Pb is not well described when the tensor is added, due to a change in the radial dependence of the total spin-orbit potential. The gap shift and a good fit to the $\ell$-dependence can be recovered when the like-particle tensor interaction is opposite in sign to that required for the $ G $ matrix.
description: 5 pages, 4 figures, accepted for publication as Rapid Communication in Physical Review C
The role of data analytics in marketing strategies
Creators: name: Shilpa sandhu
name: Aryan sah
name: Shrawan saha
name: S Vaibhav dharani reddy
name: N laksh
Publisher: name: Zenodo
Year: 2025

description: The function of data analytics in marketing strategy is critical for influencing data-driven decision-making and maximizing campaign performance. Businesses may adjust their marketing efforts by monitoring customer behaviours, tastes, and market trends to target the correct audience with personalised content. Data analytics delivers insights into consumer segmentation, lifetime value, and purchase behaviours, allowing marketers to deploy resources more efficiently, foresee trends, and track return on investment (ROI) in real time. Furthermore, predictive analytics aids in predicting client wants and modifying methods proactively. Finally, data analytics shifts marketing from intuitive to evidence-based, increasing customer engagement, brand loyalty, and business success.
Mapping Luminous Hot Stars in the Galaxy
Creators: name: Zari, E.
name: Rix, H. -W.
name: Frankel, N.
name: Xiang, M.
name: Poggio, E.
name: Drimmel, R.
name: Tkachenko, A.
Publisher: name: arXiv
Year: 2021
Subjects: subject: Astrophysics of Galaxies (astro-ph.GA)
subject: FOS: Physical sciences

description: [Abridged] Luminous hot stars dominate the stellar energy input to the interstellar medium throughout cosmological time, they are laboratories to test theories of stellar evolution and multiplicity, and they serve as luminous tracers of star formation in the Milky Way and other galaxies. Massive stars occupy well-defined loci in colour-colour and colour-magnitude spaces, enabling selection based on the combination of Gaia EDR3 astrometry and photometry and 2MASS photometry, even in the presence of substantive dust extinction. In this paper we devise an all-sky sample of such luminous OBA-type stars, designed to be quite complete rather than very pure, to serve as targets for spectroscopic follow-up with the SDSS-V survey. We estimate "astro-kinematic" distances by combining parallaxes and proper motions with a model for the expected velocity and density distribution of young stars; we show that this adds useful constraints on the stars' distances, and hence luminosities. With these distances we map the spatial distribution of a more stringently selected sub-sample across the Galactic disc, and find it to be highly structured, with distinct over- and under-densities. The most evident over-densities can be associated with the presumed spiral arms of the Milky Way, in particular the Sagittarius-Carina and Scutum-Centaurus arms. Yet, the spatial picture of the Milky Way's young disc structure emerging in this study is complex, and suggests that most young stars in our Galaxy ($t_{age}
description: 19 pages, 21 figures; accepted for publication in A&A
A market-based approach for enabling inter-area reserve exchange
Creators: name: Karaca, Orcun
name: Delikaraoglou, Stefanos
name: Kamgarpour, Maryam
Publisher: name: arXiv
Year: 2021
Subjects: subject: Optimization and Control (math.OC)
subject: Computer Science and Game Theory (cs.GT)
subject: FOS: Mathematics
subject: FOS: Computer and information sciences

description: Considering the sequential clearing of energy and reserves in Europe, enabling inter-area reserve exchange requires optimally allocating inter-area transmission capacities between these two markets. To achieve this, we provide a market-based allocation framework and derive payments with desirable properties. The proposed min-max least core selecting payments achieve individual rationality, budget balance, and approximate incentive compatibility and coalitional stability. The results extend the works on private discrete items to a network of continuous public choices.
Suffering and sovereignty: civil conflict, convert aid and international humanitarian law
Creators: name: Brenninkmeyer, Olivier A. J.
Publisher: name: University of British Columbia
Year: 2008

description: The following text analyzes legal and political problemsthat arise when donor countries attempt to provide, or facilitate the distribution of, humanitarian aid to people in insurgent-controlled areas of another state without the consentof the government in question. The purpose is to find out how uninvited humanitarian relief operations (covert aid) can be justified given the existing legal treaties and recent developments in customary international law. The reason for doing so is to explore the impact which such aid has on the concept of state sovereignty and how this concept is undergoing change due to the increasing involvement of the international community through the work of the United Nations. In the wake of recent humanitarian interventions, there is a shifting of concerns in favour of the welfare of civilians in civil wars over the interests to safeguard the security of the nation-state. In light of the above, the discussion here considers three civil conflicts: the civil wars in Nigeria and Ethiopia and the persecution of Kurds in Iraq. The text concludes that covert aid may produce a beneficial effect besides helping those in need; its inherent challenge to state sovereignty promotes an incremental loosening of the ideological conflict between human rights and sovereignty by which the international community under the auspices of the United Nations can encourage a wider acceptance of human rights values.
Optimising simulations for diphoton production at hadron colliders using amplitude neural networks
Creators: name: Aylett-Bullock, Joseph
name: Badger, Simon
name: Moodie, Ryan
Publisher: name: arXiv
Year: 2021
Subjects: subject: High Energy Physics - Phenomenology (hep-ph)
subject: Artificial Intelligence (cs.AI)
subject: Machine Learning (cs.LG)
subject: FOS: Physical sciences
subject: FOS: Computer and information sciences

description: Machine learning technology has the potential to dramatically optimise event generation and simulations. We continue to investigate the use of neural networks to approximate matrix elements for high-multiplicity scattering processes. We focus on the case of loop-induced diphoton production through gluon fusion and develop a realistic simulation method that can be applied to hadron collider observables. Neural networks are trained using the one-loop amplitudes implemented in the NJet C++ library and interfaced to the Sherpa Monte Carlo event generator where we perform a detailed study for $2\to3$ and $2\to4$ scattering problems. We also consider how the trained networks perform when varying the kinematic cuts effecting the phase space and the reliability of the neural network simulations.
description: 31 pages, 12 figures, 2 tables
The impacts of rezoning on adjacent property values
Creators: name: Carruthers, Cameron M.
Publisher: name: University of British Columbia
Year: 2008

description: Urban areas such as the City of Vancouver offer employment opportunities and living amenities that are attractive to other Canadians and immigrants. The result is a rate of growth that exceeds the national average. It is the responsibility of the elected representatives to implement public policy that will provide housing for these new residents. As the amount of available land diminishes, increased density plays a more significant role. The purpose of this paper is to determine how, if any, increased density impacts the value of adjacent properties. It has been argued by individuals and local area interest groups that property values will decline if increased density residential development is allowed to occur in their neighborhoods. One such neighborhood, the Kitsilano neighborhood in Vancouver's west side, is undergoing a rezoning from light industrial to higher density residential relative to the adjacent neighboring properties. Using a statistical procedure known as hedonic modelling, the results indicate that the rezoning has had no impact on property values. This could result from the fact that the rezoning indeed has no effect on property values as is evidenced by a great deal of the literature on the subject. However, the model may be mis-specified and these results may be interpreted in a number of other ways. For instance, the rezoning studied in this paper has two components. The area is experiencing a land-use change from light industrial to residential which theoretically ought to increase property values in a predominantly residential neighborhood. The second component involves the proposed increased density relative to the existing neighborhood with an anticipated negative effect. The results of these two forces may be cancelling each other out in the empirical model.
Discrete stochastic processes, replicator and Fokker-Planck equations of coevolutionary dynamics in finite and infinite populations
Creators: name: Claussen, Jens Christian
Publisher: name: arXiv
Year: 2008
Subjects: subject: Populations and Evolution (q-bio.PE)
subject: Statistical Mechanics (cond-mat.stat-mech)
subject: Social and Information Networks (cs.SI)
subject: Probability (math.PR)
subject: Statistics Theory (math.ST)
subject: Biological Physics (physics.bio-ph)
subject: Physics and Society (physics.soc-ph)
subject: FOS: Biological sciences
subject: FOS: Physical sciences
subject: FOS: Computer and information sciences
subject: FOS: Mathematics

description: Finite-size fluctuations in coevolutionary dynamics arise in models of biological as well as of social and economic systems. This brief tutorial review surveys a systematic approach starting from a stochastic process discrete both in time and state. The limit $N\to \infty$ of an infinite population can be considered explicitly, generally leading to a replicator-type equation in zero order, and to a Fokker-Planck-type equation in first order in $1/\sqrt{N}$. Consequences and relations to some previous approaches are outlined.
description: Banach Center publications, in press
Optimization of epitaxial graphene growth for quantum metrology
Creators: name: Pakdehi, Davood Momeni
Publisher: name: arXiv
Year: 2021
Subjects: subject: Materials Science (cond-mat.mtrl-sci)
subject: Applied Physics (physics.app-ph)
subject: Quantum Physics (quant-ph)
subject: FOS: Physical sciences

description: (See the complete abstract within the thesis in both English and German versions) In this thesis, the process conditions of the epitaxial graphene growth through a socalled polymer-assisted sublimation growth method are minutely investigated. Atomic force microscopy (AFM) is used to show that the previously neglected flow-rate of the argon process gas has a significant influence on the morphology of the SiC substrate and atop carbon layers. The results can be well explained using a simple model for the thermodynamic conditions at the layer adjacent to the surface. The resulting control option of step-bunching on the sub-nanometer scales is used to produce the ultra-flat, monolayer graphene layers without the bilayer inclusions that exhibit the vanishing of the resistance anisotropy. The comparison of four-point and scanning tunneling potentiometry measurements shows that the remaining small anisotropy represents the ultimate limit, which is given solely by the remaining resistances at the SiC terrace steps. ... The precise control of step-bunching using the Ar flow also enables the preparation of periodic non-identical SiC surfaces under the graphene layer. Based on the work function measurements by Kelvin-Probe force microscopy and X-ray photoemission electron microscopy, it is shown for the first time that there is a doping variation in graphene, induced by a proximity effect of the different near-surface SiC stacks. The comparison of the AFM and low-energy electron microscopy measurements have enabled the exact assignment of the SiC stacks, and the examinations have led to an improved understanding of the surface restructuring in the framework of a step-flow mode. ...
description: PhD thesis. Keywords: Quantum resistance metrology, epitaxial graphene growth, silicon carbide, resistance anisotropy, argon flow-rate, homogenous quasi-freestanding graphene
On Entropy Function for Supersymmetric Black Rings
Creators: name: Cai, Rong-Gen
name: Pang, Da-Wei
Publisher: name: arXiv
Year: 2007
Subjects: subject: High Energy Physics - Theory (hep-th)
subject: FOS: Physical sciences

description: The entropy function for five-dimensional supersymmetric black rings, which are solutions of $U(1)^{3}$ minimal supergravity, is calculated via both on-shell and off-shell formalism. We find that at the tree level, the entropy function obtained from both perspectives can reproduce the Bekenstein-Hawking entropy. We also compute the higher order corrections to the entropy arising form five-dimensional Gauss-Bonnet term as well as supersymmetric $R^{2}$ completion respectively and compare the results with previous microscopic calculations.
description: 17 pages, no figure, JHEP3 style, to appear in JHEP.
Applications of large deviation theory in geophysical fluid dynamics and climate science
Creators: name: Galfi, Vera Melinda
name: Lucarini, Valerio
name: Ragone, Francesco
name: Wouters, Jeroen
Publisher: name: arXiv
Year: 2021
Subjects: subject: Statistical Mechanics (cond-mat.stat-mech)
subject: Atmospheric and Oceanic Physics (physics.ao-ph)
subject: Computational Physics (physics.comp-ph)
subject: Data Analysis, Statistics and Probability (physics.data-an)
subject: Fluid Dynamics (physics.flu-dyn)
subject: FOS: Physical sciences

description: The climate system is a complex, chaotic system with many degrees of freedom and variability on a vast range of temporal and spatial scales. Attaining a deeper level of understanding of its dynamical processes is a scientific challenge of great urgency, especially given the ongoing climate change and the evolving climate crisis. In statistical physics, complex, many-particle systems are studied successfully using the mathematical framework of Large Deviation Theory (LDT). A great potential exists for applying LDT to problems relevant for geophysical fluid dynamics and climate science. In particular, LDT allows for understanding the fundamental properties of persistent deviations of climatic fields from the long-term averages and for associating them to low-frequency, large scale patterns of climatic variability. Additionally, LDT can be used in conjunction with so-called rare events algorithms to explore rarely visited regions of the phase space and thus to study special dynamical configurations of the climate. These applications are of key importance to improve our understanding of high-impact weather and climate events. Furthermore, LDT provides powerful tools for evaluating the probability of noise-induced transitions between competing metastable states of the climate system or of its components. This in turn essential for improving our understanding of the global stability properties of the climate system and of its predictability of the second kind in the sense of Lorenz. The goal of this review is manifold. First, we want to provide an introduction to the derivation of large deviation laws in the context of stochastic processes. We then relate such results to the existing literature showing the current status of applications of LDT in climate science and geophysical fluid dynamics. Finally, we propose some possible lines of future investigations.
description: 72 pages, 17 figures, Riv. Nuovo Cim. (2021)
A Spitzer Study of Comets 2P/Encke, 67P/Churyumov-Gerasimenko, and C/2001 HT50 (LINEAR-NEAT)
Creators: name: Kelley, Michael S.
name: Woodward, Charles E.
name: Harker, David E.
name: Wooden, Diane H.
name: Gehrz, Robert D.
name: Campins, Humberto
name: Hanner, Martha S.
name: Lederer, Susan M.
name: Osip, David J.
name: Pittichova, Jana
name: Polomski, Elisha
Publisher: name: arXiv
Year: 2006
Subjects: subject: Astrophysics (astro-ph)
subject: FOS: Physical sciences

description: We present infrared images and spectra of comets 2P/Encke, 67P/Churyumov-Gerasimenko, and C/2001 HT50 (LINEAR-NEAT) as part of a larger program to observe comets inside of 5 AU from the sun with the Spitzer Space Telescope. The nucleus of comet 2P/Encke was observed at two vastly different phase angles (20 degrees and 63 degrees). Model fits to the spectral energy distributions of the nucleus suggest comet Encke's infrared beaming parameter derived from the near-Earth asteroid thermal model may have a phase angle dependence. The observed emission from comet Encke's dust coma is best-modeled using predominately amorphous carbon grains with a grain size distribution that peaks near 0.4 microns, and the silicate contribution by mass to the sub-micron dust coma is constrained to 31%. Comet 67P/Churyumov-Gerasimenko was observed with distinct coma emission in excess of a model nucleus at a heliocentric distance of 5.0 AU. The coma detection suggests that sublimation processes are still active or grains from recent activity remain near the nucleus. Comet C/2001 HT50 (LINEAR-NEAT) showed evidence for crystalline silicates in the spectrum obtained at 3.2 AU and we derive a silicate-to-carbon dust ratio of 0.6. The ratio is an order of magnitude lower than that derived for comets 9P/Tempel 1 during the Deep Impact encounter and C/1995 O1 (Hale-Bopp).
description: Accepted for publication in the Astrophysical Journal 48 pages, 15 figures, 10 tables
User Requirements and DAFNE+ Architecture
Creators: name: Leligou, Helen C. (Nelly)
name: Vinet, Hugues
name: Bosco, Ferdinando
name: Konstantinidis, Dimitrios
name: Dimitropoulos, Kosmas
name: Trevisan, Olga
name: Moreno, Francisco
name: Melissari, Filisia
name: Orfanoudakis, Aggelos
Publisher: name: Zenodo
Year: 2025

description: This deliverable presents the co-creation methodology that DAFNE+ adopted to collect the user requirements (in the framework of T2.1) and reports the activities carried out in this direction. The outcome of this process is the prioritised list of user requirements which is provided in this document. Based on the user requirements, a list of system requirements was produced which has driven the design of the DAFNE+ architecture. The high-level specifications of this architecture are also provided here and will guide the development of the components of the DAFNE+ platform under WP3-4.
The Bullet Cluster 1E0657-558 evidence shows Modified Gravity in the absence of Dark Matter
Creators: name: Brownstein, J. R.
name: Moffat, J. W.
Publisher: name: arXiv
Year: 2007
Subjects: subject: Astrophysics (astro-ph)
subject: General Relativity and Quantum Cosmology (gr-qc)
subject: FOS: Physical sciences

description: A detailed analysis of the November 15, 2006 data release (Clowe et al., 2006) X-ray surface density Sigma-map and the strong and weak gravitational lensing convergence kappa-map for the Bullet Cluster 1E0657-558 is performed and the results are compared with the predictions of a modified gravity (MOG) and dark matter. Our surface density Sigma-model is computed using a King beta-model density, and a mass profile of the main cluster and an isothermal temperature profile are determined by the MOG. We find that the main cluster thermal profile is nearly isothermal. The MOG prediction of the isothermal temperature of the main cluster is T = 15.5 +- 3.9 keV, in good agreement with the experimental value T = 14.8{+2.0}{-1.7} keV. Excellent fits to the two-dimensional convergence kappa-map data are obtained without non-baryonic dark matter, accounting for the 8-sigma spatial offset between the Sigma-map and the kappa-map reported in Clowe et al. (2006). The MOG prediction for the kappa-map results in two baryonic components distributed across the Bullet Cluster 1E0657-558 with averaged mass-fraction of 83% intracluster medium (ICM) gas and 17% galaxies. Conversely, the Newtonian dark matter kappa-model has on average 76% dark matter (neglecting the indeterminant contribution due to the galaxies) and 24% ICM gas for a baryon to dark matter mass-fraction of 0.32, a statistically significant result when compared to the predicted Lambda-CDM cosmological baryon mass-fraction of 0.176{+0.019}{-0.012} (Spergel et al., 2006).
description: Accepted for publication in Mon. Not. Roy. Astron. Soc. -- July 26, 2007. In press. 28 pages, 15 figures, 5 tables
Intermittent demand forecasting for spare parts in the heavy-duty vehicle industry: a support vector machine model
Creators: name: Jiang, Peng
name: Huang, Yibin
name: Liu, Xiao
Publisher: name: Taylor & Francis
Year: 2020
Subjects: subject: Biochemistry
subject: Medicine
subject: Neuroscience
subject: Physiology
subject: FOS: Biological sciences
subject: Sociology
subject: FOS: Sociology
subject: Biological Sciences not elsewhere classified
subject: Information Systems not elsewhere classified
subject: Mathematical Sciences not elsewhere classified
subject: Science Policy

description: Intermittent demand occurs commonly for spare parts in the heavy-duty vehicle industry. Demand uncertainty and intermittency pose challenges to demand forecasting by conventional models. Support vector machine (SVM) models have been observed to yield competitive accuracy with existing models. However, there are still limitations for basic SVM models. First, the time-consuming computation does not bring a statistically significant accuracy improvement. Second, the forecasting-based inventory performance has not been sufficiently explored. Third, scarce explanations of model robustness are offered for demand forecasting. We build an adaptive univariate SVM (AUSVM) model to forecast intermittent demand. Its effectiveness, compared to 12 existing models and an improved neural-network, is demonstrated by real-world data from a heavy-duty vehicle spare-part company. AUSVM has an apparent advantage in computation time over basic SVM and neural networks. The computational results of the heavy-duty vehicle case indicate that, compared to well-known parametric models, AUSVM achieves a statistically significant accuracy improvement and better inventory performance for the group of non-smooth demand series. Discussions are presented on why AUSVM works for demand forecasting and inventory control of heavy-duty vehicle spare parts. Several insights are revealed for practitioners in the heavy-duty vehicle industry.
Casimir energy between a plane and a sphere in electromagnetic vacuum
Creators: name: Neto, Paulo A. Maia
name: Lambrecht, Astrid
name: Reynaud, Serge
Publisher: name: arXiv
Year: 2008
Subjects: subject: Quantum Physics (quant-ph)
subject: FOS: Physical sciences

description: The Casimir energy is computed in the geometry of interest for the most precise experiments, a plane and a sphere in electromagnetic vacuum. The scattering formula is developed on adapted plane-waves and multipole basis, leading to an expression valid for arbitrary relative values of the sphere radius and inter-plate distance. In the limiting case of perfect reflection, the electromagnetic result is found to depart from the commonly used proximity-force approximation (PFA) significantly more rapidly than expected from scalar computations.
description: 4 pages, 3 figures. A comparison with existing results (new reference [26]) was added
Quasi-Classical Calculation of the Mixed-State Thermal Conductivity in s-Wave and d-Wave Superconductors
Creators: name: Adachi, Hiroto
name: Miranovic, Predrag
name: Ichioka, Masanori
name: Machida, Kazushige
Publisher: name: arXiv
Year: 2007
Subjects: subject: Superconductivity (cond-mat.supr-con)
subject: Strongly Correlated Electrons (cond-mat.str-el)
subject: FOS: Physical sciences

description: To see how superconducting gap structures affect the longitudinal component of mixed-state thermal conductivity kappa_{xx}(B), the magnetic-field dependences of kappa_{xx}(B) in s-wave and d-wave superconductors are investigated. Calculations are performed on the basis of the quasi-classical theory of superconductivity by fully taking account of the spatial variation of the normal Green's function, neglected in previous works, by the Brandt-Pesch-Tewordt approximation. On the basis of our result, we discuss the possibility of kappa_{xx}(B) measurement as a method of probing the gap structure.
description: To appear in J. Phys. Soc. Jpn
Unconventional string-like singularities in flat spacetime
Creators: name: Krasnikov, S.
Publisher: name: arXiv
Year: 2006
Subjects: subject: General Relativity and Quantum Cosmology (gr-qc)
subject: FOS: Physical sciences

description: The conical singularity in flat spacetime is mostly known as a model of the cosmic string or the wedge disclination in solids. Its another, equally important, function is to be a representative of quasiregular singularities. From all these of views it seems interesting to find out whether there exist other similar singularities. To specify what "similar" means I introduce the notion of the string-like singularity, which is, roughly speaking, an absolutely mild singularity concentrated on a curve or on a 2-surface S (depending on whether the space is three- of four-dimensional). A few such singularities are already known: the aforementioned conical singularity, two its Lorentzian versions, the "spinning string", the "screw dislocation", and Tod's spacetime. In all these spacetimes S is a straight line (or a plane) and one may wonder if this is an inherent property of the string-like singularities. The aim of this paper is to construct string-like singularities with less trivial S. These include flat spacetimes in which S is a spiral, or even a loop. If such singularities exist in nature (in particular, as an approximation to gravitational field of strings) their cosmological and astrophysical manifestations must differ drastically from those of the conventional cosmic strings. Likewise, being realized as topological defects in crystals such loops and spirals will probably also have rather unusual properties.
description: Draft. References and comments are welcome. v2. Section 3 is intact, the rest is made briefer and clearer. A couple of references are added. v3. Insignificant correstions. The published version
Forecasting value-weighted real returns of TSE portfolios using dividend yields
Creators: name: Blanchard, Joseph W.
Publisher: name: University of British Columbia
Year: 2008

description: We assess the ability of dividend yields denoted by DYt, to forecast value-weighted real returns, denoted by Rt ,T of Toronto Stock Exchange (TSE) portfolios for following return horizons, T: monthly, quarterly, and one to four year. Fama and French [4] applied similar methods to the New York Stock Exchange and found the forecast power increases as the return horizon increases. We find that the Fama and French methods generalize to TSE portfolios, however, it does not apply to all portfolios. We also determine that the Fama and French approach may not lie on solid statistical ground, in that the residual variance is not time invariant. With these drawbacks in mind we consider using the methods of Dynamic Linear Models as discussed in West and Harrison [13], which allow the model parameters to be time varying. We conclude that for the majority of the portfolios, the two methods agree, however, the regression DLM approach does slightly better in comparison with the methods of Fama and French in terms of standarized forecast errors.
Discrete Tomography of Planar Model Sets
Creators: name: Baake, M.
name: Gritzmann, P.
name: Huck, C.
name: Langfeld, B.
name: Lord, K.
Publisher: name: arXiv
Year: 2006
Subjects: subject: Metric Geometry (math.MG)
subject: Combinatorics (math.CO)
subject: FOS: Mathematics
subject: 52C23; 52C05; 11R06

description: Discrete tomography is a well-established method to investigate finite point sets, in particular finite subsets of periodic systems. Here, we start to develop an efficient approach for the treatment of finite subsets of mathematical quasicrystals. To this end, the class of cyclotomic model sets is introduced, and the corresponding consistency, reconstruction and uniqueness problems of the discrete tomography of these sets are discussed.
description: 27 pages, 9 figures
Neutrino and it's lepton
Creators: name: Quznetsov, G.
Publisher: name: arXiv
Year: 2006
Subjects: subject: General Physics (physics.gen-ph)
subject: FOS: Physical sciences

description: In this paper I cite p.p. 100-117 of book G. Quznetsov, Probabilistic Treatment of Gauge Theories, in series Contemporary Fundamental Physics,ed. V. Dvoeglazov, Nova Sci. Publ., NY (2007). There I research a bound between neutrino and it's lepton.
description: LaTex, 18 pages, no figures
A note on N=(2,2) superfields in two dimensions
Creators: name: Maes, Joris
name: Sevrin, Alexander
Publisher: name: arXiv
Year: 2006
Subjects: subject: High Energy Physics - Theory (hep-th)
subject: FOS: Physical sciences

description: Motivated by the results in {\tt hep-th/0508228}, we perform a careful analysis of the allowed linear constraints on $N=(2,2)$ scalar superfields. We show that only chiral, twisted-chiral and semi-chiral superfields are possible. Various subtleties are discussed.
description: 11 pages, LaTeX2e
Exactly solvable models in atomic and molecular physics
Creators: name: Foerster, A.
name: Ragoucy, E.
Publisher: name: arXiv
Year: 2007
Subjects: subject: Strongly Correlated Electrons (cond-mat.str-el)
subject: Mesoscale and Nanoscale Physics (cond-mat.mes-hall)
subject: FOS: Physical sciences

description: We construct integrable generalised models in a systematic way exploring different representations of the gl(N) algebra. The models are then interpreted in the context of atomic and molecular physics, most of them related to different types of Bose-Einstein condensates. The spectrum of the models is given through the analytical Bethe ansatz method. We further extend these results to the case of the superalgebra gl(M|N), providing in this way models which also include fermions.
description: 33 pages
Graph Pattern Loss based Diversified Attention Network for Cross-Modal Retrieval
Creators: name: Chen, Xueying
name: Zhang, Rong
name: Zhan, Yibing
Publisher: name: arXiv
Year: 2021
Subjects: subject: Computer Vision and Pattern Recognition (cs.CV)
subject: Artificial Intelligence (cs.AI)
subject: FOS: Computer and information sciences

description: Cross-modal retrieval aims to enable flexible retrieval experience by combining multimedia data such as image, video, text, and audio. One core of unsupervised approaches is to dig the correlations among different object representations to complete satisfied retrieval performance without requiring expensive labels. In this paper, we propose a Graph Pattern Loss based Diversified Attention Network(GPLDAN) for unsupervised cross-modal retrieval to deeply analyze correlations among representations. First, we propose a diversified attention feature projector by considering the interaction between different representations to generate multiple representations of an instance. Then, we design a novel graph pattern loss to explore the correlations among different representations, in this graph all possible distances between different representations are considered. In addition, a modality classifier is added to explicitly declare the corresponding modalities of features before fusion and guide the network to enhance discrimination ability. We test GPLDAN on four public datasets. Compared with the state-of-the-art cross-modal retrieval methods, the experimental results demonstrate the performance and competitiveness of GPLDAN.
description: 5 pages, 3 figures
Regression tree models for designed experiments
Creators: name: Loh, Wei-Yin
Publisher: name: arXiv
Year: 2006
Subjects: subject: Statistics Theory (math.ST)
subject: FOS: Mathematics
subject: 62K15 (Primary) 62G08 (Secondary)

description: Although regression trees were originally designed for large datasets, they can profitably be used on small datasets as well, including those from replicated or unreplicated complete factorial experiments. We show that in the latter situations, regression tree models can provide simpler and more intuitive interpretations of interaction effects as differences between conditional main effects. We present simulation results to verify that the models can yield lower prediction mean squared errors than the traditional techniques. The tree models span a wide range of sophistication, from piecewise constant to piecewise simple and multiple linear, and from least squares to Poisson and logistic regression.
description: Published at http://dx.doi.org/10.1214/074921706000000464 in the IMS Lecture Notes--Monograph Series (http://www.imstat.org/publications/lecnotes.htm) by the Institute of Mathematical Statistics (http://www.imstat.org)
Genus-zero Whitham hierarchies in conformal-map dynamics
Creators: name: Alonso, Luis Martinez
name: Medina, Elena
Publisher: name: arXiv
Year: 2006
Subjects: subject: Exactly Solvable and Integrable Systems (nlin.SI)
subject: FOS: Physical sciences

description: A scheme for solving quasiclassical string equations is developped to prove that genus-zero Whitham hierarchies describe the deformations of planar domains determined by rational conformal maps. This property is applied in normal matrix models to show that deformations of simply-connected supports of eigenvalues under changes of coupling constants are governed by genus-zero Whitham hierarchies.
description: 12 pages, 3 figures
Spin Triplet Superconducting State due to Broken Inversion Symmetry in Li_2Pt_3B
Creators: name: Nishiyama, M.
name: Inada, Y.
name: Zheng, Guo-qing
Publisher: name: arXiv
Year: 2007
Subjects: subject: Superconductivity (cond-mat.supr-con)
subject: Strongly Correlated Electrons (cond-mat.str-el)
subject: FOS: Physical sciences

description: We report ^{11}B and ^{195}Pt NMR measurements in non-centrosymmetric superconductor Li_2Pt_3B. We find that the spin susceptibility measured by the Knight shift remains unchanged across the superconducting transition temperature T_c. With decreasing temperature (T) below T_c, the spin-lattice relaxation rate 1/T_1 decreases with no coherence peak and is in proportion to T^3. These results indicate that the Cooper pair is in the spin-triplet state and that there exist line nodes in the superconducting gap function. They are in sharp contrast with those in the isostructural Li_2Pd_3B which is a spin-singlet, s-wave superconductor, and are ascribed to the enhanced spin-orbit coupling due to the lack of spatial inversion symmetry. Our finding points to a new paradigm where exotic superconductivity arises in the absence of strong electron-electron correlations.
description: 4 pages, 4 figures
Fashion magazine advertising: the constructions of 'Femininity’ in Seventeen
Creators: name: Budgeon, Shelley J.
Publisher: name: University of British Columbia
Year: 2008

description: Examining the ways in which 'femininity' is defined and reproduced via cultural representations has become an important part of feminist critical practice. By addressing the power that images of women have to define the feminine in specific ways, this work has contributed to our understanding of 'femininity' as ascribed and not as an intrinsic female quality. Advertisements in fashion magazines, however, seek to define and naturalize a particular version of femininity while ideologically masking the fact that this definition is an arbitrary construction. These images are one of the sources of information which organize the ways in which the social category 'femininity' is understood in our culture. Thus, advertising images directed to an adolescent audience are particularly significant given that adolescence is a peak period of gender differentiation. While much research has focused upon the content of advertising images of women, this work has not given insight into how the text works to construct the meaning of femininity. The purpose of this research is to examine current definitions of femininity in Seventeen, an adolescent fashion magazine. Quantitative content analysis is used to obtain a systematic description of the manifest content of the representations of femininity. Through the development of asemiotic method further textual analysis addresses the ways in which the text works to construct the meaning of femininity. It was found that despite the incorporation of non-traditional liberation themes into current constructions of femininity, advertisements operate to reproduce traditional definitions of femininity through ideological processes. These processes included the appropriation and reformulation of cultural knowledge, the naturalization of constructed meanings, and the management of contradictions via the appearance of choice and difference. The implications that these constructions have for women's empowerment and struggle for equality are discussed.
SRPN: similarity-based region proposal networks for nuclei and cells detection in histology images
Creators: name: Sun, Yibao
name: Huang, Xingru
name: Zhou, Huiyu
name: Zhang, Qianni
Publisher: name: arXiv
Year: 2021
Subjects: subject: Computer Vision and Pattern Recognition (cs.CV)
subject: FOS: Computer and information sciences

description: The detection of nuclei and cells in histology images is of great value in both clinical practice and pathological studies. However, multiple reasons such as morphological variations of nuclei or cells make it a challenging task where conventional object detection methods cannot obtain satisfactory performance in many cases. A detection task consists of two sub-tasks, classification and localization. Under the condition of dense object detection, classification is a key to boost the detection performance. Considering this, we propose similarity based region proposal networks (SRPN) for nuclei and cells detection in histology images. In particular, a customized convolution layer termed as embedding layer is designed for network building. The embedding layer is added into the region proposal networks, enabling the networks to learn discriminative features based on similarity learning. Features obtained by similarity learning can significantly boost the classification performance compared to conventional methods. SRPN can be easily integrated into standard convolutional neural networks architectures such as the Faster R-CNN and RetinaNet. We test the proposed approach on tasks of multi-organ nuclei detection and signet ring cells detection in histological images. Experimental results show that networks applying similarity learning achieved superior performance on both tasks when compared to their counterparts. In particular, the proposed SRPN achieve state-of-the-art performance on the MoNuSeg benchmark for nuclei segmentation and detection while compared to previous methods, and on the signet ring cell detection benchmark when compared with baselines. The sourcecode is publicly available at: https://github.com/sigma10010/nuclei_cells_det.
description: Accepted by Medical Image Analysis for publication
Morphological evolution of z~1 galaxies from deep K-band AO imaging in the COSMOS deep field
Creators: name: Huertas-Company, M.
name: Rouan, D.
name: Soucail, G.
name: Fèvre, O. Le
name: Tasca, L.
name: Contini, T.
Publisher: name: arXiv
Year: 2006
Subjects: subject: Astrophysics (astro-ph)
subject: FOS: Physical sciences

description: We present the results of an imaging programme of distant galaxies (z~0.8) at high spatial resolution (~0.1").We observed 7 fields of 1'*1' with the NACO Adaptive Optics system (VLT) in Ks (2.16um) band with typical V ~ 14 guide stars and 3h integration time per field. Observed fields are selected within the COSMOS survey area. High angular resolution K-band data have the advantage to probe old stellar populations in the rest-frame, enabling to determine galaxy morphological types unaffected by recent star formation, better linked to the underlying mass than classical optical morphology studies (HST). Adaptive optics on ground based telescopes is the only method today to obtain such high resolution in the K-band. In this paper we show that reliable results can be obtained and establish a first basis for larger observing programmes. We analyze the morphologies by means of B/D (Bulge/Disk) decomposition with GIM2D and CAS (Concentration-Asymmetry) estimators for 79 galaxies with magnitudes between Ks = 17-23 and classify them in three main morphological types (Late Type, Early Type and Irregulars). We obtain for the first time an estimate of the distribution of galaxy types at redshift z ~ 1 as measured from the near infrared at high spatial resolution. We show that galactic parameters (disk scale length, bulge effective radius and bulge fraction) can be estimated with a random error lower than 20% for the bulge fraction up to Ks = 19 (AB = 21) and that classification into the three main morphological types can be done up to Ks = 20 (AB = 22) with at least 70% of correct identifications. We used the known photometric redshifts to obtain a redshift distribution over 2 redshift bins (z < 0.8, 0.8 < z < 1.5) for each morphological type.
description: 19 pages, 19 figures, 5 tables, Accepted for publication in A&A, typos corrected, referee's suggestions added, figure 3 has been strongly degraded
Solutions to large B and L breaking in the Randall-Sundrum model
Creators: name: Nakajima, H.
name: Shinbara, Y.
Publisher: name: arXiv
Year: 2007
Subjects: subject: High Energy Physics - Phenomenology (hep-ph)
subject: FOS: Physical sciences

description: The stability of proton and neutrino masses are discussed in the Randall-Sundrum model. We show that relevant operators should be suppressed, if the hierarchical Yukawa matrices are explained only by configurations of wavefunctions for fermions and the Higgs field along the extra dimension. We assume a $Z_N$ discrete gauge symmetry to suppress those operators. In the Dirac neutrino case, there is an infinite number of symmetries which may forbid the dangerous operators. In the Majorana neutrino case, the discrete gauge symmetries should originate from $U(1)_X$ gauge symmetries which are broken on the Planck brane. We also comment on the $n-\bar{n}$ oscillation as a phenomenon which can distinguish those discrete gauge symmetries.
description: 12 pages, No figures, Added references
Rivaroxaban-loaded SLNs with treatment potential of deep vein thrombosis: in-vitro, in-vivo, and toxicity evaluation
Creators: name: Luo, Xuemei
name: Saleem, Aiman
name: Shafique, Uswa
name: Sarwar, Sadia
name: Ullah, Kalim
name: Imran, Muhammad
name: Zeb, Alam
name: Din, Fakhar ud
Publisher: name: Taylor & Francis
Year: 2023
Subjects: subject: Biochemistry
subject: Space Science
subject: Cell Biology
subject: Pharmacology
subject: Biotechnology
subject: Environmental Sciences not elsewhere classified
subject: Chemical Sciences not elsewhere classified
subject: Immunology
subject: FOS: Clinical medicine
subject: Hematology

description: Rivaroxaban (RXB), a novel Xa inhibitor having groundbreaking therapeutic potential. However, this drug is associated with few limitations, including its pharmacokinetics related toxicities. Here, we developed RXB-loaded SLNs (RXB-SLNs) to improve its biopharmaceutical profile. Methods: High pressure homogenizer was used to prepare RXB-SLNs, followed by their particle characterization, Transmission electron microscopy (TEM), Dynamic light scattering (DSC), and Powder X-ray diffraction (PXRD) analysis. Beside this, in-vitro, ex-vivo, and in-vivo evaluation, prothrombin time assessment and toxicity was investigated. RXB-SLNs had their particle size in nano range (99.1 ± 5.50 nm) with excellent morphology and low polydispersity index (0.402 ± 0.02) and suitable zeta potential (−25.9 ± 1.4 mV). The incorporation efficiency was observed around 95.9 ± 3.9%. In-vitro release profiles of the RXB-SLNs exhibited enhanced dissolution (89 ± 9.91%) as compared to pure drug (11 ± 1.43%) after 24 h of the study. PK study demonstrated a seven times enhanced bioavailability of RXB-SLNs when compared with pure drug. Furthermore, RXB-SLNs exhibited an expressive anti-coagulant behavior in human and rat blood plasma. Also, the final formulation exhibited no toxicity after oral administration of the SLNs. All together, these studies revealed the capability of the SLNs for carrying the RXB with enhanced therapeutic efficacy and no toxicity, most importantly for the treatment of deep vein thrombosis.
Evaluation of capture-recapture estimators using a cyclic snowshoe hare population
Creators: name: Boulanger, John
Publisher: name: University of British Columbia
Year: 2008

description: Many theoretical capture-recapture estimation models have been introduced into applied field ecology in the last twenty years, but only a few of these models have been tested in field situations. The objective of this thesis was to evaluate capture-recapture estimators when applied to a cyclic snowshoe hare population in the Kluane Lake area in the Southern Yukon. The estimation models and model selection routine of program CAPTURE, and the Jolly-Seberopen model were evaluated. Two independent approaches were used to evaluate estimators: 1) Island populations of known size were used to determine estimator bias and study factors that affect hare capture probabilities, and 2) An individual-based spatial Monte Carlo simulation model was used to evaluate estimator robustness to sample biases caused by a cyclic snowshoe hare population. Two islands were used for studies of estimator bias. Results from both islands suggest that the CAPTURE heterogeneity models Mh (jackknife), Mh (Chao), and Mth(time/heterogeneity) were approximately unbiased for the island population of hares. All other CAPTURE models displayed a negative bias. The program CAPTURE model selection routine picked models of different bias for each trapping period. Island studies of variation in hare capture probabilities documented a strong relationship between hare movement patterns and capture probabilities on an individual and population level. The strong contribution of sampling factors such as trap placement, and time of sampling in the variation of hare capture probabilities was also documented.