cometadata/datacite-rtg-text-other-reclassification-records huggingface dataset:
Orthogonal polynomials associated with root systems
Creators: name: Macdonald, Ian G.
Publisher: name: arXiv
Year: 2000
Subjects: subject: Quantum Algebra (math.QA)
subject: Classical Analysis and ODEs (math.CA)
subject: Combinatorics (math.CO)
subject: FOS: Mathematics

description: Let R and S be two irreducible root systems spanning the same vector space and having the same Weyl group W, such that S (but not necessarily R) is reduced. For each such pair (R,S) we construct a family of W-invariant orthogonal polynomials in several variables, whose coefficients are rational functions of parameters $q,t_1,t_2,...,t_r$, where r (=1,2 or 3) is the number of W-orbits in R. For particular values of these parameters, these polynomials give the values of zonal spherical functions on real and p-adic symmetric spaces. Also when R=S is of type $A_n$, they conincide with the symmetric polynomials described in I. G. Macdonald, Symmetric Functions and Hall Polynomials, 2nd edition, Oxford University Press (1995), Chapter VI.
description: 40 pages, AmS-TeX. This is the 1987 preprint of the same title that has been circulated privately only as a handwritten manuscript. It has now been typed and published in the S\'eminaire Lotharingien de Combinatoire
Bidisperse micro fluidized beds: Effect of bed inclination on mixing
Creators: name: de Oliveira, Henrique Barbosa
name: Franklin, Erick de Moraes
Publisher: name: arXiv
Year: 2024
Subjects: subject: Soft Condensed Matter (cond-mat.soft)
subject: Fluid Dynamics (physics.flu-dyn)
subject: FOS: Physical sciences

description: Micro fluidized beds are basically suspensions of solid particles by an ascending fluid in a mm-scale tube, with applications in chemical and pharmaceutical processes involving powders. Although in many applications beds are polydisperse, previous works considered only monodisperse beds aligned in the vertical direction. However, introducing an inclination with respect to gravity leads to different bed patterns and mixing levels, which can be beneficial for some applications. In this paper, we investigate experimentally the behavior of micro gas-solid beds consisting of bidisperse mixtures under different inclinations. In our experiments, mono and bidisperse beds are filmed with a high-speed camera and the images are processed for obtaining measurements at both the bed and grain scales. We show that the degree of segregation is larger for vertical beds, but mixing varies non-monotonically with inclination, with an optimal angle of 30$^{\circ}$--50$^{\circ}$ with respect to gravity. By computing the mean and fluctuation velocities of grains, we reveal that the mixing layer results from the competition between segregation by kinetic sieving and circulation promoted by the fluid flow. We also observe worse fluidization as the angle relative to gravity increases, accounting then for the non-monotonic behavior. Our results bring new insights into mixing and segregation in polydisperse beds, which can be explored for processing powders in industry.
description: This article appeared in Phys. Fluids 36, 013303 (2024) and may be found at https://doi.org/10.1063/5.0179153
Business Plan: Taking UBC's Residential Environmental Assessment Program (REAP) Beyond the UBC Campus
Creators: name: Bahirat, Dhanashree
name: Endara, Cristina
name: Mohandas, Rahul
name: Wang, Shirley
Publisher: name: The University of British Columbia
Year: 2010

description: Disclaimer: “UBC SEEDS provides students with the opportunity to share the findings of their studies, as well as their opinions, conclusions and recommendations with the UBC community. The reader should bear in mind that this is a student project/report and is not an official document of UBC. Furthermore readers should bear in mind that these reports may not reflect the current status of activities at UBC. We urge you to contact the research persons mentioned in a report or the SEEDS Coordinator about the current status of the subject matter of a project/report.”
Classes of non-minimally coupled scalar fields in spatially curved FRW spacetimes
Creators: name: Kerachian, Morteza
name: Acquaviva, Giovanni
name: Lukes-Gerakopoulos, Georgios
Publisher: name: arXiv
Year: 2019
Subjects: subject: General Relativity and Quantum Cosmology (gr-qc)
subject: FOS: Physical sciences

description: In this work we perform a dynamical analysis of a broad class of non-minimally coupled real scalar fields in the Friedmann-Robertson-Walker (FRW) spacetime framework. The first part of our study concerns the dynamics of an unspecified positive potential in a spatially curved FRW spacetime, for which we define a new set of dimensionless variables and a new evolution parameter. In the framework of this general setup we have recognized several general features of the system, like symmetries, invariant subsets and critical points, and provide their cosmological interpretation. The second part of our work focuses on flat FRW cases for which the tracker parameter is constant, i.e. we examine specific classes of potentials. After analyzing these cases dynamically, we discuss their physical interpretation.
description: 13 pages, 7 figures
Moving Black Holes in 3D
Creators: name: Gomez, R.
name: Lehner, L.
name: Marsa, R. L.
name: Winicour, J.
Publisher: name: arXiv
Year: 1997
Subjects: subject: General Relativity and Quantum Cosmology (gr-qc)
subject: FOS: Physical sciences

description: We model a radiating, moving black hole in terms of a worldtube-nullcone boundary value problem. We evolve this data in the region interior to the worldtube but exterior to a trapped surface by means of a characteristic evolution based upon a family of ingoing null hypersurfaces. Data on the worldtube is induced from a Schwarzschild spacetime but the worldtube is allowed to move relative to the static Schwarzschild trajectories. When the worldtube is stationary (static or rotating in place), a distorted black hole inside it evolves to equilibrium with the Schwarzschild boundary. A boost of the worldtube with respect to the Schwarzschild black hole does not affect these results. The code also stably tracks an unlimited number of orbits when the worldtube wobbles periodically. The work establishes that characteristic evolution can evolve a spacetime with a distorted black hole moving on a 3-dimensional grid with the controlled accuracy and long term stability necessary to investigate new facets of black hole physics.
description: 11 pages + 6 figures
Beyond the Immeasurable
Creators: name: McGarry, Llewellyn Ane
Publisher: name: The Australian National University
Year: 2018
Subjects: biographical
collecting
domestic environment
collected specimens
personal matter
empirical data
found objects
collecting practices
interpersonal contamination
domestic space
feminist art and craft
identity
Sophie Calle
Annette Messager
Louise Bourgeois
love
scultpure
photography
performace
video
sense of self
place
belonging
visual arts practice
practice led research
motherhood
home
family

description: My thesis, Beyond the Immeasurable, is a biographical exploration of my collective: my ex-husband and three children. My method is based in collecting. The outcomes of my research are works of art developed from material sourced, classified, and collected in my domestic environment. Over the four years of research, I collected specimens, personal matter, empirical data, and found objects. It ranged from evidence of the body (hair, teeth, food scraps, and saliva), soundscapes from within the home (audio recordings of the collective during interactions), documented performances, and statistical/empirical data of interactions (dates, times, durations). My practice engaged with a number of themes and theories including collecting practices, interpersonal contamination, domestic space, feminist art and craft, and identity as well as contextualising my research amongst artists such as Sophie Calle, Annette Messager, and Louise Bourgeois. In the end, it became the evidence of our lives and experiences. As the project progressed, the research evolved to focus on defining who I was, my role within the collective, and, despite the collective’s demise, ultimately, the project was about love. The research outcomes encompass a collection of sculptural, photographic, performance and video pieces. I found, in response to my aims, my practice-led research had become a narrative which gave me a sense of self, place, and belonging. These collections and the proceeding works resulted in a demonstration of a metaphorical fusion of identities, establishment of relationships within the collective, consolidation of different personas and facets of my life, and the development and redefinition my visual arts practice. The most surprising discovery, was the redefining of my role as a mother and the acceptance of this expressed through feminine craft with materials I collected from my own domestic space, my home.
Casimir force between surfaces close to each other
Creators: name: Ahmedov, H.
name: Duru, I. H.
Publisher: name: arXiv
Year: 2002
Subjects: subject: High Energy Physics - Theory (hep-th)
subject: FOS: Physical sciences

description: Casimir interactions (due to the massless scalar field fluctuations) of two surfaces which are close to each other are studied. After a brief general presentation, explicit calculations for co-axial cylinders, co-centric spheres and co-axial cones are performed.
description: Latex, 20 pages, added references, corrected typos, changed content
Border tensions in the Indonesia/Papua New Guinea relationship
Creators: name: Usman, Asnani
Publisher: name: Canberra, ACT : The Australian National University
Year: 1989
Subjects: subject: Indonesia Boundaries Papua New Guinea
subject: Papua New Guinea Boundaries Indonesia

description: The relationship between Indonesia and Papua New Guinea has been significantly affected by problems associated with the border between them. This has not been a dispute about the boundary itself. There is a line on the map which the two countries have agreed to accept Rather, the border problem which has arisen between the two countries concerns an independence movement called the ‘Organisasi Papua Merdeka’ (Free Papua Movement - OPM) which since 1963 has been active against Indonesia and has repeatedly crossed the border to seek refuge in neighbouring Papua New Guinea; incursions in Papua New Guinea by the Indonesian military in pursuit of the OPM; and thousands of Irian Jayan refugees who have crossed the border to seek sanctuary in Papua New Guinea. Since Papua New Guinea’s independence in 1975 the border problem has intensified, especially in 1984 when an uprising in Jayapura resulted in an influx of 12,(XX) refugees into Papua New Guinea territory. This heightened security concerns in the two countries. For Jakarta, the refugees could become bases for the OPM to threaten Indonesia’s security; for Papua New Guinea on the other hand, there were concerns about possible Indonesian border incursions in an attempt to destroy the OPM.
Thermal Conductivity of Fiber-Reinforced Lightweight Cement Composites
Creators: Hochstein, Daniel Peter
Publisher: name: Columbia University
Year: 2013
Subjects: subject: Civil engineering
subject: FOS: Civil engineering
subject: Mechanical engineering
subject: FOS: Mechanical engineering
subject: Cement composites--Analysis
subject: Thermal conductivity
subject: Lightweight concrete--Testing

description: This dissertation describes the development of a multiscale mathematical model to predict the effective thermal conductivity (ETC) of fiber-reinforced lightweight cement composites. At various stages in the development of the model, the results are compared to experimental values and the model is calibrated when appropriate. Additionally at each stage the proposed model and its results are compared to physical upper and lower bounds placed on the ETC for the different types of structural models. Fiber-reinforced lightweight cement mortar is a composite material that contains various components at different scales. The model development begins with a study of neat cement paste and is then extended to include normal weight fine aggregate, lightweight aggregate, and reinforcing fibers. This is accomplished by first considering cement mortar, then models for lightweight cement mortar and fiber-reinforced cement mortar are considered separately, and finally these two are joined together to study fiber-reinforced lightweight cement mortar. Two different experimental techniques are used to determine the ETC of the different materials. The flash method is used to determine the ETC of the neat cement paste and cement mortar samples, and a recently developed transient technique is used for the remainder of the samples. The model for the ETC of cement paste is derived from a lumped parameter model considering the water-cement ratio and saturation of the paste. The results are calibrated using experimental data generated during this project and are in good agreement with values found in the literature. The models for the ETC of cement mortar, fiber-reinforced cement mortar, lightweight cement mortar, and fiber-reinforced lightweight cement mortar are all based on a differential multiphase model (DM model). This is capable of predicting the ETC of a composite material with various ellipsoidal inclusion phases. It is shown how the DM model can be modified to include information about the maximum volume fraction of the inclusions. A linear packing model is introduced which allows the gradation of the different inclusion phases to be considered. Additionally other factors that affect the ETC are discussed, including the presence of an interfacial transition zone around the inclusions and the relative size of the different constituent phases. The model developed in this report is not only able to predict the effective thermal conductivity for a material, but it can also be used to minimize the effective thermal conductivity by optimizing the structure of the composite. This is done through proper selection of the types and amounts of the various constituents, along with their size, shape, and gradation.
Equilibrium trapping of cold atoms using dipole and radiative forces in an optical trap
Creators: name: Mashimo, Taro
name: Abe, Masashi
name: Tojo, Satoshi
Publisher: name: arXiv
Year: 2019
Subjects: subject: Quantum Gases (cond-mat.quant-gas)
subject: Atomic Physics (physics.atom-ph)
subject: FOS: Physical sciences

description: We report on highly effective trapping of cold atoms by a new method for a stable single optical trap in the near-optical resonant regime. An optical trap with the near-optical resonance condition consists of not only the dipole but also the radiative forces, while a trap using a far-off resonance dominates only the dipole force. We estimate a near-optical resonant trap for ultracold rubidium atoms in the range between -0.373 and -2.23 THz from the resonance. The time dependence of the trapped atoms indicates some difference of the stable center-of-mass positions in the near-optical resonant trap, and also indicates that the differences are caused by the change of the equilibrium condition of the optical dipole and radiative forces. A stable position depends only on laser detuning due to the change in the radiative force; however, the position is ineffective against the change in the laser intensity, which results in a change in the radiative force.
description: 6 pages, 6 figures
Breastfeeding and birth intervals among women in Java and Bali
Creators: name: Sunaryanto, S. G
Publisher: name: Canberra, ACT : The Australian National University
Year: 1989
Subjects: subject: Birth intervals Indonesia Java
subject: Birth intervals Indonesia Bali (Province)
subject: Breastfeeding Indonesia Java
subject: Breastfeeding Indonesia Bali (Province)

description: Using the 1976 Indonesia Fertility Survey data, this study aims to identify which factors are most important in explaining the variation in the duration of breastfeeding and birth intervals, and to examine the patterns of breastfeeding and birth interval duration according to those factors. The factors that have been included are: place of residence, wife's and husband's education, age of mother, birth order and sex of the infant, method of contraception used and duration of breastfeeding. Place of residence, wife's and husband’s education are found to have the greatest contribution in explaining the variation of the duration of breastfeeding. Shorter durations of breastfeeding are associated with urban residence and higher education. Age of mother and sex of the infant do not show a significant association with the duration of breastfeeding. Birth order and contraceptive use are also found to be associated with the duration of breastfeeding, however, their contributions in explaining the variation are not as great as either place of residence or wife's or husband’s education. In the case of birth interval length, factors that are found to be most important in explaining the variation are the duration of breastfeeding and contraceptive use. Longer duration of birth intervals are associated with longer duration of breastfeeding and use of contraception. Factors of maternal age and birth order and sex of the infant do not have an association with the duration of birth intervals. Place of residence and wife's education, before controlling for other factors, seem to have a strong association with the duration of birth intervals. However, after controlling for other factors, the associations are likely to disappear. Presumably, the associations between these factors and the duration of birth intervals mainly are through the breastfeeding variable. Surprisingly, husband’s education has a quite strong association with the duration of birth intervals. It is presumed that the association is not related to the husband's education per se but it is related to the dominant opinion of the husband in decision making about having children.
A non-automatic (!) application of Gosper's algorithm evaluates a determinant from tiling enumeration
Creators: name: Ciucu, Mihai
name: Krattenthaler, Christian
Publisher: name: arXiv
Year: 2000
Subjects: subject: Combinatorics (math.CO)
subject: Classical Analysis and ODEs (math.CA)
subject: FOS: Mathematics
subject: 05A15 (Primary) 05A16 05A17 05A19 05B45 33C20 52C20 (Secondary)

description: We evaluate the determinant $\det_{1\leq i,j\leq n}(\binom{x+y+j}{x-i+2j}-\binom{x+y+j}{x+i+2j})$, which gives the number of lozenge tilings of a hexagon with cut off corners. A particularly interesting feature of this evaluation is that it requires the proof of a certain hypergeometric identity which we accomplish by using Gosper's algorithm in a non-automatic fashion.
description: 14 pages, AmS-TeX, uses TeXDraw; minor modifications
Thermal Comfort Design in Public Outdoor Space: The Influence of Spatial Configuration and Implications in Urban Design
Creators: Gao, Yuan
Publisher: name: Columbia University
Year: 2020
Subjects: City planning
Public spaces--Planning
Urban parks--Planning
Plants
Parks--Design

description: Outdoor public space is critical to urban living, and parks serve as valuable assets for all citizens. As there exist extensive research and design practices of urban public areas, the microclimate conditions are essential to thermal comfort at the local level. However, the data collection at this scale is missing, and the current planning paradigm is inadequate to evaluate and respond to local needs for public space quickly. The the- sis, focusing on the research gap, adopts a simulation approach to study the influence of spatial configuration. The study first simulated the current design of Paley Park in New York City, combining holistic climate simulation software and digital modeling programs. The validity of the simulation model is completed by comparing the field measurement and simulated output. Further, the study proposes the design iterations of built environment features and construct comparisons between sets of design scenarios. Based on both graphic and numeric results, the research proves the significant roles of vegetation and optimal methods to maximize the thermal effect. Besides, the research also propos- es a model-based modification method for space design. These findings provide a new, predictive framework for the local scale urban design, and help offer better guidelines for urban pocket park design.
Semiclassical Theory of Short Periodic Orbits in Quantum Chaos
Creators: name: Vergini, Eduardo G.
Publisher: name: arXiv
Year: 1999
Subjects: subject: Chaotic Dynamics (nlin.CD)
subject: FOS: Physical sciences

description: We have developed a semiclassical theory of short periodic orbits to obtain all quantum information of a bounded chaotic Hamiltonian system. If T_1 is the period of the shortest periodic orbit, T_2 the period of the next one and so on, the number N_p.o. of periodic orbits required in the calculation is such that T_1+...+T_N_{p.o} is approximately T_H, with T_H the Heisenberg time. As a result N_p.o \simeq h T_{H}/\ln (h T_{H}), where h is the topological entropy. For methods related to the trace formula N_{p.o} \simeq \exp(h T_{H})/ (h T_{H}).
description: 4 pages, 1 ps figure
Carbon stock assessment of date palm using remote sensing coupled with field-based measurements in Abu Dhabi (United Arab Emirates)
Creators: name: Issa, Salem
name: Basam Dahy
name: Saleous, Nazmi
name: Ksiksi, Taoufik
Publisher: name: Taylor & Francis
Year: 2019
Subjects: subject: Medicine
subject: Biotechnology
subject: 59999 Environmental Sciences not elsewhere classified
subject: FOS: Earth and related environmental sciences
subject: 39999 Chemical Sciences not elsewhere classified
subject: FOS: Chemical sciences
subject: Ecology
subject: FOS: Biological sciences
subject: 69999 Biological Sciences not elsewhere classified
subject: Science Policy
subject: Plant Biology

description: This study aims at developing a remote sensing based model to estimate carbon stock (CS) in date palm plantations in the United Arab Emirates (UAE). Data from Landsat 8 OLI were used to assess the correlation between spectral reflectance and different vegetation indices on one side, and aboveground biomass (AGB) derived from ground measurements on the other. AGB and CS (ton ha−1) were estimated using traditional destructive methods of standard sampling techniques and allometric equations developed in a previous study for date palms in the area. The relationships between the estimated AGB and parameters derived from remote sensing (RS) data were tested using single and multiple linear regression analysis. The results indicated a significant correlation with certain RS parameters. For mature palms class alone (>10 years), the correlation with single bands was only significant with SWIR1 and SWIR2 while the correlation was significant with all tested VI’s except for TCB vegetation index. A combination of bands R, SWIR1, and SWIR2 improved the determination of this class to a coefficient of determination (R2) value of 0.961. However, for the medium and young age classes (10–5 and less than 5 years), the correlation was not significant (with the exception of SWIR1 and TCB index for medium class), where the use of higher spatial resolution can be a good alternative. On the other hand, for mixed ages (young, medium and mature palms), the strongest correlations were found using SWIR2 single band and the SR vegetation index; having R2 values of 0.753 and 0.871, respectively. The R2 was improved to 0.952 by using stepwise multiple regression combining DVI, NDI, and RVI vegetation indices. Finally, results obtained showed that CS represented 53.87% of the total AGB in date palms. Subsequently, the average amount of carbon stock (CS) for both mature and mixed classes was calculated at 15.81 and 10.3 ton ha−1 respectively.
Soil Quality Analysis: A Chemistry Case Study of Sustainability Street
Creators: name: Brockett, Beth
Publisher: name: The University of British Columbia
Year: 2010

description: Disclaimer: “UBC SEEDS provides students with the opportunity to share the findings of their studies, as well as their opinions, conclusions and recommendations with the UBC community. The reader should bear in mind that this is a student project/report and is not an official document of UBC. Furthermore readers should bear in mind that these reports may not reflect the current status of activities at UBC. We urge you to contact the research persons mentioned in a report or the SEEDS Coordinator about the current status of the subject matter of a project/report.”
Implicit labour contracts in hierarchical firms : some theoretical considerations
Creators: name: Lou, Tai-Hsiung
Publisher: name: The Australian National University
Year: 1989
Subjects: subject: Labor contract
subject: Industrial relations

description: This thesis is a theoretical study of employment relations between hierarchical firms and individual workers. The focus point is on the characteristics of the optimal contracts that are implicitiy entered into between the two parties. The role of hierarchical firms in the collection of information about the worker's abiUty is investigated. It is shown that, when the firm uses this information to decide its job assignments/promotions and job signalling exists in the labour market, the possibility of quitting results in an upward sloping wage profile for the high ability worker, a downward rigid wage profile for the low ability worker, and the worker's initial wage being less than his expected average productivity. These conclusions remain unchanged when there are more than two perceived ability levels, or the firm offers two possible career structures to its workers. Another function of the hierarchical firm is the imposition of supervision to prevent its workers from shirking. When this activity is added to the production and insurance activities, it is shown that the conclusions of the symmetric information implicit labour contract must be modified : invariant wage income across states does not necessarily hold and the optimum employment level changes. The existence of the supervision activity in the firm also precludes work sharing as a way of eliminating involuntary unemployment. A hierarchical firm can also be treated as an internal labour market where junior/unskilled workers and senior/skilled workers interact. The senior workers transmit skills (either general or specific) to junior workers and provide them with promotion prospects, and the firm can recruit skilled workers from outside. Under these circumstances the conditions under which wages do not equal marginal value product of labour are fully investigated. This approach also provides an explanation for why a worker's wage profile may diverges from his product profile
Fusaric acid induced promoter methylation of DNA methyltransferases triggers DNA hypomethylation in human hepatocellular carcinoma (HepG2) cells
Creators: name: Terisha Ghazi
name: Savania Nagiah
name: Pragalathan Naidoo
name: Chuturgoon, Anil A.
Publisher: name: Taylor & Francis
Year: 2019
Subjects: subject: Biophysics
subject: Biochemistry
subject: Cell Biology
subject: Genetics
subject: FOS: Biological sciences
subject: Molecular Biology
subject: 39999 Chemical Sciences not elsewhere classified
subject: FOS: Chemical sciences
subject: Science Policy
subject: 69999 Biological Sciences not elsewhere classified
subject: Cancer
subject: Hematology
subject: Plant Biology

description: Fusaric acid (FA), a mycotoxin contaminant of maize, displays toxicity in plants and animals; however, its epigenetic mechanism is unknown. DNA methylation, an epigenetic modification that regulates gene expression, is mediated by DNA methyltransferases (DNMTs; DNMT1, DNMT3A and DNMT3B) and demethylases (MBD2). The expression of DNMTs and demethylases are regulated by promoter methylation, microRNAs (miR-29b) and post-translational modifications (ubiquitination). Alterations in these DNA methylation modifying enzymes affect DNA methylation patterns and offer novel mechanisms of FA toxicity. We determined the effect of FA on global DNA methylation as well as a mechanism of FA induced changes in DNA methylation by transcriptional (promoter methylation), post-transcriptional (miR-29b) and post-translational (ubiquitination) regulation of DNMTs and MBD2 in the human hepatocellular carcinoma (HepG2) cell line. FA induced global DNA hypomethylation (p < 0.0001) in HepG2 cells. FA decreased the mRNA and protein expression of DNMT1 (p < 0.0001), DNMT3A (p < 0.0001) and DNMT3B (p < 0.0001) by upregulating miR-29b (p < 0.0001) and inducing promoter hypermethylation of DNMT1 (p < 0.0001) and DNMT3B (p < 0.0001). FA decreased the ubiquitination of DNMT1 (p = 0.0753), DNMT3A (p = 0.0008) and DNMT3B (p < 0.0001) by decreasing UHRF1 (p < 0.0001) and USP7 (p < 0.0001). FA also induced MBD2 promoter hypomethylation (p < 0.0001) and increased MBD2 expression (p < 0.0001). Together these results indicate that FA induces global DNA hypomethylation by altering DNMT promoter methylation, upregulating miR-29b, and increasing MBD2 in HepG2 cells.
First grids of low-mass stellar models and isochrones with self-consistent treatment of rotation : From 0.2 to 1.5 M_\odot at 7 metallicities from PMS to TAMS
Creators: name: Amard, L.
name: Palacios, A.
name: Charbonnel, C.
name: Gallet, F.
name: Georgy, C.
name: Lagarde, N.
name: Siess, L.
Publisher: name: arXiv
Year: 2019
Subjects: subject: Solar and Stellar Astrophysics (astro-ph.SR)
subject: FOS: Physical sciences

description: We present an extended grid of state-of-the art stellar models for low-mass stars including updated physics (nuclear reaction rates, surface boundary condition, mass-loss rate, angular momentum transport, torque and rotation-induced mixing prescriptions). We aim at evaluating the impact of wind braking, realistic atmospheric treatment, rotation and rotation-induced mixing on the structural and rotational evolution from the pre-main sequence to the turn-off. Using the STAREVOL code, we provide an updated PMS grid. We compute stellar models for 7 different metallicities, from [Fe/H] = -1 dex to [Fe/H] = +0.3 dex with a solar composition corresponding to $Z=0.0134$. The initial stellar mass ranges from 0.2 to 1.5\Ms with extra grid refinement around one solar mass. We also provide rotating models for three different initial rotation rates (slow, median and fast) with prescriptions for the wind braking and disc-coupling timescale calibrated on observed properties of young open clusters. The rotational mixing includes an up-to-date description of the turbulence anisotropy in stably stratified regions. The overall behaviour of our models at solar metallicity -- and its constitutive physics -- is validated through a detailed comparison with a variety of distributed evolutionary tracks. The main differences arise from the choice of surface boundary conditions and initial solar composition. The models including rotation with our prescription for angular momentum extraction and self-consistent formalism for angular momentum transport are able to reproduce the rotation period distribution observed in young open clusters over a broad mass-range. These models are publicly available and may be used to analyse data coming from present and forthcoming asteroseismic and spectroscopic surveys such as Gaia, TESS and PLATO.
description: 21 pages, 13 figures, accepted in A&A
title: Braunschweigische Anzeigen : offizielles Regierungs- und Anzeigeblatt. 40. Jahr 1784
Creators: name: :None
Publisher: name: Fürstliche Waisenhaus-Buchdruckerei
Year: 1784
Subjects: subject: Brunsvicensien der Universitätsbibliothek Braunschweig
subject: Braunschweigische Anzeigen
subject: 902

description: Braunschweigische Anzeigen: offizielles Regierungs- und Anzeigeblatt, vol. 40. 1784
Tensor pomeron, vector odderon and diffractive production of meson and baryon pairs in proton-proton collisions
Creators: name: Lebiedowicz, Piotr
name: Nachtmann, Otto
name: Szczurek, Antoni
Publisher: name: arXiv
Year: 2018
Subjects: subject: High Energy Physics - Phenomenology (hep-ph)
subject: FOS: Physical sciences

description: We review some selected results of the tensor-pomeron and vector-odderon model of soft high-energy proton-proton scattering and central exclusive production of meson and baryon pairs in proton-proton collisions. We discuss the theoretical aspects of this approach and consider the phenomenological implications in a variety of processes at high energies, comparing to existing experimental data. We consider the diffractive dipion and dikaon production including the continuum and the dominant scalar and tensor resonance contributions as well as the photoproduction processes. The theoretical results are compared with existing CDF experimental data and predictions for planned or current LHC experiments, ALICE, ATLAS, CMS, LHCb are presented.
description: 10 pages, 6 figures, invited talk by P. Lebiedowicz at ISMD2018, 3-7 September 2018, Singapore
Optimisation in Neurosymbolic Learning Systems
Creators: name: van Krieken, Emile
Publisher: name: arXiv
Year: 2024
Subjects: subject: Artificial Intelligence (cs.AI)
subject: Machine Learning (cs.LG)
subject: FOS: Computer and information sciences

description: Neurosymbolic AI aims to integrate deep learning with symbolic AI. This integration has many promises, such as decreasing the amount of data required to train a neural network, improving the explainability and interpretability of answers given by models and verifying the correctness of trained systems. We study neurosymbolic learning, where we have both data and background knowledge expressed using symbolic languages. How do we connect the symbolic and neural components to communicate this knowledge? One option is fuzzy reasoning, which studies degrees of truth. For example, being tall is not a binary concept. Instead, probabilistic reasoning studies the probability that something is true or will happen. Our first research question studies how different forms of fuzzy reasoning combine with learning. We find surprising results like a connection to the Raven paradox stating we confirm "ravens are black" when we observe a green apple. In this study, we did not use the background knowledge when we deployed our models after training. In our second research question, we studied how to use background knowledge in deployed models. We developed a new neural network layer based on fuzzy reasoning. Probabilistic reasoning is a natural fit for neural networks, which we usually train to be probabilistic. However, they are expensive to compute and do not scale well to large tasks. In our third research question, we study how to connect probabilistic reasoning with neural networks by sampling to estimate averages, while in the final research question, we study scaling probabilistic neurosymbolic learning to much larger problems than before. Our insight is to train a neural network with synthetic data to predict the result of probabilistic reasoning.
description: PhD dissertation
Additional file 2: of Methylation at cg05575921 of a smoking-related gene (AHRR) in non-smoking Taiwanese adults residing in areas with different PM2.5 concentrations
Creators: name: Disline Tantoh
name: Kuan-Jung Lee
name: Nfor, Oswald
name: Yi-Chia Liaw
name: Lin, Chin
name: Chu, Hou-Wei
name: Pei-Hsin Chen
name: Hsu, Shu-Yi
name: Wen-Hsiu Liu
name: Chen-Chang Ho
name: Lung, Chia-Chi
name: Wu, Ming-Fang
name: Yi-Ching Liaw
name: Tonmoy Debnath
name: Yung-Po Liaw
Publisher: name: figshare
Year: 2019
Subjects: subject: Biochemistry
subject: Medicine
subject: Cell Biology
subject: Genetics
subject: FOS: Biological sciences
subject: Molecular Biology
subject: 59999 Environmental Sciences not elsewhere classified
subject: FOS: Earth and related environmental sciences
subject: 69999 Biological Sciences not elsewhere classified
subject: Science Policy

description: AHRR CpG sites significantly associated with PM2.5. (DOCX 20 kb)
title: Braunschweigische Anzeigen : offizielles Regierungs- und Anzeigeblatt. 41. Jahr 1785
Creators: name: :None
Publisher: name: Fürstliche Waisenhaus-Buchdruckerei
Year: 1785
Subjects: subject: Brunsvicensien der Universitätsbibliothek Braunschweig
subject: Braunschweigische Anzeigen
subject: 902

description: Braunschweigische Anzeigen: offizielles Regierungs- und Anzeigeblatt, vol. 74. 1785
Thermal Performance of Passive Radiative Cooling Strategies on Building Envelopes
Creators: Srinivasan, Arvind
Publisher: name: Columbia University
Year: 2020
Subjects: subject: Power resources
subject: Applied physics
subject: Mechanical engineering
subject: FOS: Mechanical engineering
subject: Cooling
subject: Sustainable design
subject: Facades
subject: Plants in architecture

description: Passive radiative cooling has been extensively studied as a means to cool the exterior surfaces of buildings and reduce space cooling loads. This phenomenon is caused by thermal radiation that is continuously emitted from surfaces on Earth, and transmitted through the atmosphere to outer space (at approximately 3-4 Kelvin temperature scale). To gain a deeper understanding of how terrestrial objects can access this extraterrestrial cold reservoir, I use a theoretical framework derived from classical radiative heat transfer to investigate the radiative properties of surfaces and the atmosphere over a spectrum of wavelengths. In this dissertation, I demonstrate the theoretical cooling potential that can be achieved by surfaces with idealized radiative properties under various atmospheric conditions. While several researchers have optimized the optical properties of their surfaces to emit strongly in wavelength bands corresponding to high atmospheric transparency, I show that a high degree of spectral tailoring is only benefcial when humidity in the atmosphere is low or when a surface can minimize its absorption of solar radiation. Additionally, I prescribe appropriate sets of surface radiative properties that are required to achieve cooling under various solar and atmospheric loads. An evaluation of passive strategies on building envelopes would be incomplete without considering green facades. To that end, I propose a theoretical model to calculate the heat flux reduction offered by green facades. Unlike previously reported works that use the Pennman-Monteith approach to calculate evapotranspiration in a leaf canopy, my model takes a simpler approach in calculating the sensible and latent heat loss from a layer of leaves while preserving prediction accuracy. By extending the theoretical models for passive radiative cooling and green facades to building envelopes, my work provides insights into the appropriate passive strategy suitable for a particular climate. In dry conditions, surface coatings with optically-tuned radiative properties can perform better than green facades by maximizing their thermal emission through the atmosphere. However, the additional evaporative cooling benefits, insulation and aesthetic value offered by green facades may make them more favorable in cooler and more humid climates. Since the cooling performance of all passive strategies is strongly correlated to the local climate, my work indicates that variations in ambient air temperature, solar radiation and humidity must be considered when choosing an appropriate strategy for a building envelope.
Additional file 1: of Methylation at cg05575921 of a smoking-related gene (AHRR) in non-smoking Taiwanese adults residing in areas with different PM2.5 concentrations
Creators: name: Disline Tantoh
name: Kuan-Jung Lee
name: Nfor, Oswald
name: Yi-Chia Liaw
name: Lin, Chin
name: Chu, Hou-Wei
name: Pei-Hsin Chen
name: Hsu, Shu-Yi
name: Wen-Hsiu Liu
name: Chen-Chang Ho
name: Lung, Chia-Chi
name: Wu, Ming-Fang
name: Yi-Ching Liaw
name: Tonmoy Debnath
name: Yung-Po Liaw
Publisher: name: figshare
Year: 2019
Subjects: subject: Cell Biology
subject: Genetics
subject: FOS: Biological sciences
subject: Molecular Biology
subject: 59999 Environmental Sciences not elsewhere classified
subject: FOS: Earth and related environmental sciences
subject: 69999 Biological Sciences not elsewhere classified
subject: Developmental Biology
subject: Cancer
subject: Science Policy
subject: Plant Biology

description: Spearman correlation between PM2.5 concentrations (Îźg/m3) and mean methylation levels (beta values) in the northern, north-central, central, and southern areas. The methylation beta values decrease as PM2.5 levels increase. (DOCX 40 kb)
Genetic Correlations in Mutation Processes
Creators: name: Ben-Naim, E.
name: Lapedes, A. S.
Publisher: name: arXiv
Year: 1998
Subjects: subject: Statistical Mechanics (cond-mat.stat-mech)
subject: Adaptation and Self-Organizing Systems (nlin.AO)
subject: Biological Physics (physics.bio-ph)
subject: Genomics (q-bio.GN)
subject: FOS: Physical sciences
subject: FOS: Biological sciences

description: We study the role of phylogenetic trees on correlations in mutation processes. Generally, correlations decay exponentially with the generation number. We find that two distinct regimes of behavior exist. For mutation rates smaller than a critical rate, the underlying tree morphology is almost irrelevant, while mutation rates higher than this critical rate lead to strong tree-dependent correlations. We show analytically that identical critical behavior underlies all multiple point correlations. This behavior generally characterizes branching processes undergoing mutation.
description: revtex, 8 pages, 2 figs
Molecular rules for selectivity in lipase-catalysed acylation of lysine
Creators: name: Dettori, L.
name: Jelsch, Christian
name: Guiavarc'h, Y.
name: Delaunay, S.
name: Framboisier, X.
name: Chevalot, I.
name: Humeau, C.
Publisher: name: arXiv
Year: 2019
Subjects: subject: Quantitative Methods (q-bio.QM)
subject: Chemical Physics (physics.chem-ph)
subject: Biomolecules (q-bio.BM)
subject: FOS: Biological sciences
subject: FOS: Physical sciences

description: The selectivity of L-lysine acylation by lauric acid catalysed by Candida antarctica lipase B (CALB) was investigated combining experimental and theoretical methodologies. Experiments showed the near-exclusive acylation of lysine $ε$-amino group; only traces of product resulting from the acylation of lysine $α$-amino group were observed fleetingly. Molecular modelling simulations were performed aiming to understand the molecular rules for selectivity. Flexible docking simulations combined with structural investigations into lysine/CALB binding modes also suggested the preferential acylation of lysine $ε$-amino group without, however, excluding the acylation of the lysine $α$-amino group. Electrostatic interaction energy between lysine and the residues covering the catalytic cavity was calculated in order to understand the discrimination between the two lysine amino groups. The results suggests that the proximity of the carboxylate group hinders the binding of the substrate in configurations enabling the N$α$-acylation. Key interactions with the polar region covering the catalytic triad were identified and a plausible explanation for selectivity was proposed.
Additional file 8 of Diprovocim protects against the radiation-induced damage via the TLR2 signaling pathway
Creators: name: Fang, Duo
name: Zhao, Hainan
name: Pei, Lu
name: Jiang, Kai
name: Gan, Yuhan
name: Zhai, Xuanlu
name: Zhang, Liao
name: Cheng, Ying
name: Liu, Cong
name: Du, Jicong
name: Gao, Fu
Publisher: name: figshare
Year: 2025
Subjects: subject: Biochemistry
subject: Microbiology
subject: FOS: Biological sciences
subject: Cell Biology
subject: Genetics
subject: Molecular Biology
subject: Neuroscience
subject: Physiology
subject: Immunology
subject: FOS: Clinical medicine
subject: Biological Sciences not elsewhere classified
subject: Developmental Biology
subject: Cancer
subject: Hematology

description: Additional file 8.
The consumption of the Internet in household families
Creators: name: Waller, Vivienne
Publisher: name: The Australian National University
Year: 2001

description: This thesis examines the consumption of the Internet by household families. It is based on data collected in Canberra; 689 responses to a self-completion survey to parents on attitudes to, and use of, the Internet and more than 75 interviews with members of 19 household families who had the Internet connected at home. My project is not a test of existing theories about socio-technical networks in a domestic setting nor is it purely descriptive. Rather my intention is to generate theory from the data drawing on Glaser and Strauss's (1967) strategy of grounded theory. My approach to the data draws from symbolic interactionism which has the premise that people act on the basis of the meanings that things have for them. It is also feminist in that I pay attention to issues of gender. My central argument is that the Internet, the family and the self are performative. Through an empirical examination of the intersecting performances of the family and the self with the performance of the Internet, I show that there is nothing stable or natural about a particular version of the Internet, family or self. Each is constituted through its own performance and each performance impinges upon the other. My analysis of peoples’ stories about their everyday use of the Internet shows that the nature of the intersection is complex and cannot be predicted by looking at characteristics of the Internet, the family or the self in isolation. I draw from Science and Technology Studies to demonstrate that the Internet’s performance varies within and between households in complex and contradictory ways. I build on existing work by Silverstone (1996) to develop a model for characterising the performance of the Internet in domestic consumption. With regard to the family, I look at how home use of the Internet is implicated in debates about the changing nature of the family. Rather than giving any specific sociological meaning to the term ‘family’, I have used the term to refer to the way that groups of individuals who understand themselves as forming a family enact that understanding in their daily life. Drawing on studies of consumption and enlisting Bourdieu’s concept of cultural capital, I also analyse how people mobilise the Internet as a resource for the performance of self.
Palatini Variational Principle for $N$-Dimensional Dilaton Gravity
Creators: name: Burton, H.
name: Mann, R. B.
Publisher: name: arXiv
Year: 1997
Subjects: subject: General Relativity and Quantum Cosmology (gr-qc)
subject: FOS: Physical sciences

description: We consider a Palatini variation on a general $N$-Dimensional second order, torsion-free dilaton gravity action and determine the resulting equations of motion. Consistency is checked by considering the restraint imposed due to invariance of the matter action under simple coordinate transformations, and the special case of N=2 is examined. We also examine a sub-class of theories whereby a Palatini variation dynamically coincides with that of the "ordinary" Hilbert variational principle; in particular we examine a generalized Brans-Dicke theory and the associated role of conformal transformations.
description: 16 pages, LaTeX