cometadata/datacite-rtg-text-other-reclassification-records huggingface dataset:
Even-visiting random walks: exact and asymptotic results in one dimension
Creators: name: Bauer, M.
name: Bernard, D.
name: Luck, J. M.
Publisher: name: arXiv
Year: 2001
Subjects: subject: Statistical Mechanics (cond-mat.stat-mech)
subject: FOS: Physical sciences

description: We reconsider the problem of even-visiting random walks in one dimension. This problem is mapped onto a non-Hermitian Anderson model with binary disorder. We develop very efficient numerical tools to enumerate and characterize even-visiting walks. The number of closed walks is obtained as an exact integer up to 1828 steps, i.e., some $10^{535}$ walks. On the analytical side, the concepts and techniques of one-dimensional disordered systems allow to obtain explicit asymptotic estimates for the number of closed walks of $4k$ steps up to an absolute prefactor of order unity, which is determined numerically. All the cumulants of the maximum height reached by such walks are shown to grow as $k^{1/3}$, with exactly known prefactors. These results illustrate the tight relationship between even-visiting walks, trapping models, and the Lifshitz tails of disordered electron or phonon spectra.
description: 24 pages, 4 figures. To appear in J. Phys. A
Triad representation of the Chern-Simons state in quantum gravity
Creators: name: Paternoga, Robert
name: Graham, Robert
Publisher: name: arXiv
Year: 2000
Subjects: subject: General Relativity and Quantum Cosmology (gr-qc)
subject: FOS: Physical sciences

description: We investigate a triad representation of the Chern-Simons state of quantum gravity with a non-vanishing cosmological constant. It is shown that the Chern-Simons state, which is a well-known exact wavefunctional within the Ashtekar theory, can be transformed to the real triad representation by means of a suitably generalized Fourier transformation, yielding a complex integral representation for the corresponding state in the triad variables. It is found that topologically inequivalent choices for the complex integration contour give rise to linearly independent wavefunctionals in the triad representation, which all arise from the one Chern-Simons state in the Ashtekar variables. For a suitable choice of the normalization factor, these states turn out to be gauge-invariant under arbitrary, even topologically non-trivial gauge-transformations. Explicit analytical expressions for the wavefunctionals in the triad representation can be obtained in several interesting asymptotic parameter regimes, and the associated semiclassical 4-geometries are discussed. In restriction to Bianchi-type homogeneous 3-metrics, we compare our results with earlier discussions of homogeneous cosmological models. Moreover, we define an inner product on the Hilbert space of quantum gravity, and choose a natural gauge-condition fixing the time-gauge. With respect to this particular inner product, the Chern-Simons state of quantum gravity turns out to be a non-normalizable wavefunctional.
description: Latex, 30 pages, 1 figure, to appear in Phys. Rev. D
Cosmological Spinning Multi-`Black-Hole' Solution in String Theory
Creators: name: Shiromizu, Tetsuya
Publisher: name: arXiv
Year: 1999
Subjects: subject: High Energy Physics - Theory (hep-th)
subject: Astrophysics (astro-ph)
subject: General Relativity and Quantum Cosmology (gr-qc)
subject: FOS: Physical sciences

description: We give a cosmological spinning multi-`black-hole' solution in the Einstein-Maxwell-Dilaton-Axion theory with a positive cosmological constant. This solution is the cosmological dilatonic Israel-Wilson-Perjes solution and describes the collision of several spinning `black-holes'.
description: 6 pages, Prog.Theor.Phys. accepted
Optoelectronic measurements of organic and hybrid solar cells
Creators: name: Mica, Natalie Ann
Publisher: name: University of St Andrews
Year: 2021
Subjects: Photovoltaic
Energy harvesting
Semiconductor
Time of flight
Optical wireless communications
Non-fullerene acceptor
Conjugated polymer

description: Organic and hybrid perovskite solar cells offer a cost-effective and efficient alternative to traditional silicon solar technologies. Also, the tunability of these photoactive materials allows for devices to be crafted for bespoke purposes, such as tandem solar cells or for harvesting energy from indoor lighting. The work in this thesis presents the development, understanding, and application of these materials. First, the development of two new small molecule materials for organic solar cell application is discussed. Their solar cell performance is optimised using several techniques to control the organic semiconductor film morphology and changes to the film are characterised using atomic force microscopy. The stability of these new solar cells is then measured in ambient conditions under constant illumination, which is correlated to the film morphology. Then the electron mobility of two high-performing non-fullerene organic materials using a Time of Flight method is measured. This technique not only allowed for the accurate measurement of the electron mobility of these materials, but also provides insight into the disorder of the organic film and the existence of deep-traps within. Lastly, a hybrid perovskite solar cell is optimised for application in visible light communications for simultaneous energy and data harvesting. In this study the devices are measured under various illumination conditions to gain insight into their loss mechanisms, while also optimising them for this specific purpose.
Evidence for a Genuine Ferromagnetic to Paramagnetic Reentrant Phase Transition in a Potts Spin Glass Model
Creators: name: Gingras, M. J. P.
name: Sorensen, Erik S.
Publisher: name: arXiv
Year: 1998
Subjects: subject: Disordered Systems and Neural Networks (cond-mat.dis-nn)
subject: Statistical Mechanics (cond-mat.stat-mech)
subject: FOS: Physical sciences

description: uch experimental and theoretical efforts have been devoted in the past twenty years to search for a genuine thermodynamic reentrant phase transition from a ferromagnetic to either a paramagnetic or spin glass phase in disordered ferromagnets. So far, no real system or theoretical model of a short-range spin glass system has been shown to convincingly display such a reentrant transition. We present here results from Migdal-Kadanoff real-space renormalization-group calculations that provide for the first time strong evidence for ferromagnetic to paramagnetic reentrance in Potts spin glasses on hierarchical lattices. Our results imply that there is no fundamental reason ruling out thermodynamic reentrant phase transitions in all non mean-field randomly frustrated systems, and may open the possibility that true reentrance might occur in some yet to be discovered real randomly frustrated materials.
description: paper, 3 POSTSCRIPT figures included. Submitted to Physical Review B. Contact: gingras@astro.uwaterloo.ca
Analysing PICA & validating with SHACL4Bib
Creators: name: Kiraly, Peter
name: Voß, Jakob
name: Nzi Mba, Jean-Michel
Publisher: name: Zenodo
Year: 2024
Subjects: data quality

description: Overview of QA Catalogue and Metadata Quality Assessment Framework with new analysis of K10plus PICA data and additional SHACL4Bib rules.
title: Οικοτουρισμός: το παράδειγμα της Κόστα Ρίκα
titleType: AlternativeTitle
title: Ecotourism: case study of Costa Rica
Creators: name: Mylonas, Stavros
Publisher: name: National Technological University of Athens
Year: 2014
Subjects: Οικοτουρισμός
Αειφορία
Περιβάλλον
Sustainability
Ecotourism
Environment
Costa Rica

description: At the center of interest lays environment, ecotourism in general and i t ' s application on Costa Rica. Our final goal is to come in touch with the rules that determine this specific topic and the rules that produce the ethical background, that is to say, environmental ethics. We will attempt to study the principals of ecotourism and try to understand the points of success and those of failure by means of economy, culture and environment. We will come to a conclusion by relating to environmental ethics. As an aftereffect, a discussion could start about the application of the ecotouristic model to Greece, i t ' s environments and landscape. The case study of Costa Rica represents a touchstone in the concept of ecotourism. Despite there are many ecotouristic destination around the globe, Costa Rica is one of the pioneer countries that have fully applied such a big scale activity on tourism and at the same time gathers the most characteristi c features of such an activi ty. Meanwhi le, one could argue that ecotourism in Costa Rica forms a distinctively successful example in concerning nvironmental conservation and economic growth.
Additional file 2 of Global, regional, and national burden of hypertensive heart disease during 1990–2019: an analysis of the global burden of disease study 2019
Creators: name: Lu, Yunyan
name: Lan, Tian
Publisher: name: figshare
Year: 2022
Subjects: subject: Medicine
subject: Biotechnology
subject: Sociology
subject: FOS: Sociology
subject: Cancer
subject: Science Policy

description: Additional file 2: Figure S2. The top 20 countries with high disease burden (A, number of prevalence; B, prevalence rates; C, age-standardized prevalence rates; D, number of death; E, death rates; F, age-standardized death rates).
title: Studies on energy expenditure of East African women
Creators: name: Aitken, Fiona J.
Publisher: name: The University of Edinburgh
Year: 1961
Subjects: subject: Annexe MSc Digitisation Project 2022 Block 25
subject: Mwanza District
subject: Lake Province, Tanganyika
subject: Tanganyika
subject: African women
subject: daily energy expenditure

description: This study, carried out in the Kwanaa District of the Lake Province of Tanganyika, was undertaken with a view to increasing the information available about the energy requirements of African women. The subjects studied were healthy young women training to be Domestic Science or Primary school teachers. The average age was 19 years and the average weight 56.7 Kg. Coming from good homes in all parts of the territory, they were judged to be representative of the healthy young female population. The diets provided by the schools where the students were studying are described and an estimate of their food value given. These were thought to be nutritionally adequate for the girls concerned By means of indirect calorimetry using the Kofranyi Michaelis respirometer and a Haldane Gas Analysis apparatus, measurements of the energy cost of lying at rest were made on 12 subjects. The energy cost of sitting and of walking out of doors at approximately 2.5 mph were similarly determined on 16 and 10 subjects respectively. The results obtained wore compared with those obtained by various workers dealing with European subjects of the same age and were found to be of the same order. The results of further studies of the calorie cost of three common Domestic tasks (vis. pounding, digging and carrying a head load) using 10 subjects are reported. The processes involved and the methods of carrying out the experimmts are described. The average daily energy expenditure of 23 students was estimated in th® following way. With th® aid of a diary, end using a pre-arranged code of letters for each type of activity, each student kept a record of her activities for 8 consecutive days. The total time spent on each activity was multiplied by the estimated calorie cost of that activity and the total energy expended the student calculated - hence the average daily expenditure for the group was found. An attempt was made to get some idea of the daily energy expenditure of village women. A typical lake Province village was observed and described with particular reference to work of the women. The heights and weights of. a number of the women have been reported and some observations of the time spent by them on various tasks. It was not possible to do any direct measurements on the village women but using figures. from various other sources an estimate was made of their daily energy expenditure. This was found to be slightly higher than British housewives but similar to that found with female European housewives and agricultural workers. It was also noted that «he average weight of the village women was less than that of the students studied, and that of the European women.
Calculation and Verification of Irradiation Damage Cross Section with Energy-Angular Distribution
Creators: name: Chen, Shengli
name: Bernard, David
name: Tamagno, Pierre
name: Jean, Cyrille De Saint
Publisher: name: arXiv
Year: 2019
Subjects: subject: Nuclear Theory (nucl-th)
subject: Applied Physics (physics.app-ph)
subject: FOS: Physical sciences

description: To complete the computation of Displacements per Atom (DPA) cross sections, the present work shows the methods of calculating DPA cross sections with the nuclear data of energy-angular distribution in both the laboratory and the Center-of-Mass (CM) frames. The method of direct calculation with data in the CM frame is proposed and recommended to decrease the computation burden and keep all information. Theoretical analyses reveal that more than 7-point Gauss-Legendre Quadrature (GLQ) should be used to ensure the convergence of the angular integration for DPA computations. Numerical results show that 8-point GLQ is sufficient for the continuum inelastic neutron scattering, while 64-point GLQ is implemented in NJOY. Because the integrand over secondary energy is not derivable in the whole domain of the secondary energy, the trapezoidal integration is used to perform the numerical integration. The numerical calculations show that the trapezoidal integration is suitable to perform the integration over the secondary energy on the fine grid given by nuclear data files at least for 56Fe. The present work reveals that the direct interpolation of energy-angular-integrated damage can give the same results computed with standard interpolated energy-angular distributions. The DPA cross sections will be overestimated if isotropic angular distributions are assumed. However, the first-order Legendre polynomial can give DPA cross sections within 0.4% deviation, while 12 orders are required to describe the anisotropic angular distribution.
Josephson effect between trapped Bose-Einstein condensates
Creators: name: Zapata, Ivar
name: Sols, Fernando
name: Leggett, Anthony J.
Publisher: name: arXiv
Year: 1997
Subjects: subject: Condensed Matter (cond-mat)
subject: Atomic Physics (physics.atom-ph)
subject: Quantum Physics (quant-ph)
subject: FOS: Physical sciences

description: We study the Josephson effect between atomic Bose-Einstein condensates. By drawing on an electrostatic analogy, we derive a semiclassical functional expression for the three-dimensional Josephson coupling energy in terms of the condensate density. Estimates of the capacitive energy and of the Josephson plasma frequency are also given. The effect of dissipation due to the incoherent exchange of normal atoms is analysed. We conclude that coherent Josephson dynamics may already be observable in current experimental systems.
description: 4 pages, RevTex
Joint Computation Offloading and Resource Allocation in Cloud Based Wireless HetNets
Creators: name: Ti, Nguyen Ti
name: Le, Long Bao
Publisher: name: arXiv
Year: 2018
Subjects: subject: Networking and Internet Architecture (cs.NI)
subject: FOS: Computer and information sciences

description: In this paper, we study the joint computation offloading and resource allocation problem in the two-tier wireless heterogeneous network (HetNet). Our design aims to optimize the computation offloading to the cloud jointly with the subchannel allocation to minimize the maximum (min-max) weighted energy consumption subject to practical constraints on bandwidth, computing resource and allowable latency for the multi-user multitask computation system. To tackle this non-convex mixed integer non-linear problem (MINLP), we employ the bisection search method to solve it where we propose a novel approach to transform and verify the feasibility of the underlying problem in each iteration. In addition, we propose a low-complexity algorithm, which can decrease the number of binary optimization variables and enable more scalable computation offloading optimization in the practical wireless HetNets. Numerical studies confirm that the proposed design achieves the energy saving gains about 55% in comparison with the local computation scheme under the strict required latency of 0.1s.
description: 6 pages, IEEE Global Communications Conference 2017 (GLOBECOM 2017)
Additional file 1 of Global, regional, and national burden of hypertensive heart disease during 1990–2019: an analysis of the global burden of disease study 2019
Creators: name: Lu, Yunyan
name: Lan, Tian
Publisher: name: figshare
Year: 2022
Subjects: subject: Medicine
subject: Biotechnology
subject: Sociology
subject: FOS: Sociology
subject: Cancer
subject: Science Policy

description: Additional file 1: Figure S1. The age-standardized prevalence (A), death (B), and DALY (C) cases for hypertensive heart disease by different continents, 1990-2019.
Additional file 1: of Cost-effectiveness-analysis of ultrasound guidance for central venous catheterization compared with landmark method: a decision-analytic model
Creators: name: Seleznova, Yana
name: Brass, Patrick
name: Hellmich, Martin
name: Stock, Stephanie
name: MĂźller, Dirk
Publisher: name: figshare
Year: 2019
Subjects: subject: Medicine
subject: Sociology
subject: FOS: Sociology
subject: 69999 Biological Sciences not elsewhere classified
subject: FOS: Biological sciences
subject: Marine Biology

description: Intervention costs of an ultrasound guidance. These costs are borne by the hospital of maximum care and are not reimbursed by the SHI. (DOC 31 kb)
Actigraphy-based Assessment of Sleep Parameters in an Ageing Rural South African Population
Creators: name: O'Brien, Katie
name: Basiarz, Ewa
name: Morris-Cumberbatch, Keisha
name: Rae, Dale
name: Scheuermaier, Karine
name: Gomez-OlivÃ, Xavier
name: von Schantz, Malcolm
Publisher: name: Zenodo
Year: 2021

description: Background: The relationship between sleep and ageing is well established, with parameters such as sleep efficiency and total sleep time declining with age. Current understanding of sleep health and the determination of normal sleep characteristics is largely derived from data collected in urban first-world populations. Here, we aim to establish whether this relationship is also observed in an ageing rural population of Africans living in Africa. Methods:Participants (N = 205; aged 68.8 Â± 12.01; 112 females) of a cohort study conducted in Agincourt, South Africa, were selected for this study. Participants wore an accelerometer on their non-dominant wrist for a minimum of 5 nights of actigraphy (ActTrust, Condor Instruments, SÃ£o Paulo Brazil). Measures of 24-h activity rhythms, sleep duration and timing, light exposure, and peripheral body temperature was collected using actigraphy. Results : Non-parametric analysis of the data derived parameters associated with activity levels across the day and the night. Linear regressions were performed to determine the relationship between age and a number of sleep characteristics, controlled for sex. The analyses revealed a significant positive relationship between age, total sleep time (F(2,194) = 6.827; p=0.001) and sleep efficiency (F(2,194) = 5.62; p=0.004). The analyses showed no significant relationship between mid-sleep point and age. Conclusions: In this cross-sectional study, total sleep time and sleep efficiency demonstrated a positive association with age, in addition to the timing of sleep remaining stable as age increased. This contradicts our current understanding of sleep and ageing. Possible reasons include survivor effects, however, it is worth noting that this population differs from those studied in the majority of the published literature both in their ancestry and in their rural location and consequent greater exposure to natural and lesser exposure to artificial light.
Geometric Sensitivity Measures for Bayesian Nonparametric Density Estimation Models
Creators: name: Saha, Abhijoy
name: Kurtek, Sebastian
Publisher: name: arXiv
Year: 2018
Subjects: subject: Methodology (stat.ME)
subject: FOS: Computer and information sciences

description: We propose a geometric framework to assess global sensitivity in Bayesian nonparametric models for density estimation. We study sensitivity of nonparametric Bayesian models for density estimation, based on Dirichlet-type priors, to perturbations of either the precision parameter or the base probability measure. To quantify the different effects of the perturbations of the parameters and hyperparameters in these models on the posterior, we define three geometrically-motivated global sensitivity measures based on geodesic paths and distances computed under the nonparametric Fisher-Rao Riemannian metric on the space of densities, applied to posterior samples of densities: (1) the Fisher-Rao distance between density averages of posterior samples, (2) the log-ratio of Karcher variances of posterior samples, and (3) the norm of the difference of scaled cumulative eigenvalues of empirical covariance operators obtained from posterior samples. We validate our approach using multiple simulation studies, and consider the problem of sensitivity analysis for Bayesian density estimation models in the context of three real datasets that have previously been studied.
description: Accepted for publication in Sankhya A
Identification of Internal Faults in Indirect Symmetrical Phase Shift Transformers Using Ensemble Learning
Creators: name: Bera, Pallav Kumar
name: Kumar, Rajesh
name: Isik, Can
Publisher: name: arXiv
Year: 2018
Subjects: subject: Computer Vision and Pattern Recognition (cs.CV)
subject: FOS: Computer and information sciences

description: This paper proposes methods to identify 40 different types of internal faults in an Indirect Symmetrical Phase Shift Transformer (ISPST). The ISPST was modeled using Power System Computer Aided Design (PSCAD)/ Electromagnetic Transients including DC (EMTDC). The internal faults were simulated by varying the transformer tapping, backward and forward phase shifts, loading, and percentage of winding faulted. Data for 960 cases of each type of fault was recorded. A series of features were extracted for a, b, and c phases from time, frequency, time-frequency, and information theory domains. The importance of the extracted features was evaluated through univariate tests which helped to reduce the number of features. The selected features were then used for training five state-of-the-art machine learning classifiers. Extremely Random Trees and Random Forest, the ensemble-based learners, achieved the accuracy of 98.76% and 97.54% respectively outperforming Multilayer Perceptron (96.13%), Logistic Regression (93.54%), and Support Vector Machines (92.60%)
description: 18th IEEE International Symposium on Signal Processing and Information Technology (ISSPIT), 2018
Energy harvesting wireless networks with correlated energy sources
Creators: name: Abad, Mehdi Salehi Heydar
name: Gunduz, Deniz
name: Ercetin, Ozgur
Publisher: name: arXiv
Year: 2019
Subjects: subject: Performance (cs.PF)
subject: FOS: Computer and information sciences

description: This work considers a system with two energy harvesting (EH) nodes transmitting to a common destination over a random access channel. The amount of harvested energy is assumed to be random and independent over time, but correlated among the nodes possibly with respect to their relative position. A threshold-based transmission policy is developed for the maximization of the expected aggregate network throughput. Assuming that there is no a priori channel state or EH information available to the nodes, the aggregate network throughput is obtained. The optimal thresholds are determined for two practically important special cases: i) at any time only one of the sensors harvests energy due to, for example, physical separation of the nodes; ii) the nodes are spatially close, and at any time, either both nodes or none of them harvests energy.
Homogeneous magnetic fields in fully anisotropic string cosmological backgrounds
Creators: name: Giovannini, Massimo
Publisher: name: arXiv
Year: 2000
Subjects: subject: General Relativity and Quantum Cosmology (gr-qc)
subject: FOS: Physical sciences

description: We present new solutions of the string cosmological effective action in the presence of a homogeneous Maxwell field with pure magnetic component. Exact solutions are derived in the case of space-independent dilaton and vanishing torsion background. In our examples the four dimensional metric is either of Bianchi-type III and VI$_{-1}$ or Kantowski-Sachs.
description: 4 pages
Bottleneck Surfaces and Worldsheet Geometry of Higher-Curvature Quantum Gravity
Creators: name: Szabo, Richard J.
name: Wheater, John F.
Publisher: name: arXiv
Year: 1999
Subjects: subject: High Energy Physics - Theory (hep-th)
subject: Condensed Matter (cond-mat)
subject: General Relativity and Quantum Cosmology (gr-qc)
subject: High Energy Physics - Lattice (hep-lat)
subject: FOS: Physical sciences

description: We describe a simple lattice model of higher-curvature quantum gravity in two dimensions and study the phase structure of the theory as a function of the curvature coupling. It is shown that the ensemble of flat graphs is entropically unstable to the formation of baby universes. In these simplified models the growth in graphs exhibits a branched polymer behaviour in the phase directly before the flattening transition.
description: 18 pages LaTeX, 3 .eps figures, uses epsf.tex; clarifying comments added and typos corrected
The quantum-mechanical position operator and the polarization problem
Creators: name: Resta, R.
Publisher: name: arXiv
Year: 1998
Subjects: subject: Materials Science (cond-mat.mtrl-sci)
subject: FOS: Physical sciences

description: The position operator (defined within Schroedinger representation as usual) becomes meaningless when the usual Born-von Karman periodic boundary conditions are adopted: this fact is at the root of the polarization problem. I show how to define the position expectation value by means of rather peculiar many-body (multiplicative) operator acting on the wavefunction of the extended system. This definition can be regarded as the generalization of a precursor work, apparently unrelated to the polarization problem. For uncorrelated electrons, the present finding coincides with the so-called "single-point Berry phase" formula, which can hardly be regarded as the approximation of a continuum integral, and is computationally very useful for disordered systems. Simulations which are based on this concept are being performed by several groups.
description: 10 pages, 1 embedded figure (in two panels). Presented at the Fifth Williamsburg Workshop on First-Principles Calculations for Ferroelectrics
Conestruction Management Scop of Services.
Creators: name: Abdikarin Jafar, Haji Abdikarin
Publisher: name: Zenodo
Year: 2025
Subjects: Conestruction Management
Scop of Services

description: A construction project is very complex by its nature and requires efficient project management practices to achieve its goal. Project management is a formalized and structured method of managing change in a rigorous manner. It requires the application of knowledge, skills, tools and techniques to project activities to achieve the required project outcome (IPMA, 2006). In light with this, Project management is the art of directing and coordinating human and material resources throughout the life of the project by using modern management techniques to achieve predetermined objectives of scope, cost, time, quality, and participation satisfaction. (Yilak, 2013; CIB, 2004 as cited by Negatu, 2017).

It is very essential to focus on the complete process of project management for constructed facilities rather than the historical roles of various specialists; each specialty might have important advances in developing new techniques and tools for efficient implementation of construction projects. However, it is through the understanding of the entire process of project management that these specialists can respond more effectively to the successful completion of the project on budget, within scope and schedule. Organizations using project management have shown better utilization of resources, shorter development times, reduced costs, interdepartmental cooperation that builds synergies across the organization, and a better focus on results and quality (Singh, 2019).
Additional file 6: of Immune profiling of pre- and post-treatment breast cancer tissues from the SWOG S0800 neoadjuvant trial
Creators: name: Xiaotong Li
name: Warren, Sarah
name: Pelekanou, Vasiliki
name: Wali, Vikram
name: Cesano, Alessandra
name: Mingdong Liu
name: Danaher, Patrick
name: Nathane Elliott
name: Nahleh, Zeina
name: Hayes, Daniel
name: Hortobagyi, Gabriel
name: Barlow, William
name: Hatzis, Christos
name: Pusztai, Lajos
Publisher: name: figshare
Year: 2019
Subjects: subject: Cell Biology
subject: Molecular Biology
subject: Pharmacology
subject: Evolutionary Biology
subject: FOS: Biological sciences
subject: 59999 Environmental Sciences not elsewhere classified
subject: FOS: Earth and related environmental sciences
subject: Immunology
subject: FOS: Clinical medicine
subject: Cancer
subject: Plant Biology
subject: 60506 Virology
subject: Computational Biology

description: Figure S3. IL8/VEGF signature expression and TIL counts in pre- and post-treatment samples under treatment arms containing or not containing bevacizumab. A. IL8/VEGF signature expression in pre- and post-treatment samples under treatment arm containing bevacizumab. B. IL8/VEGF signature expression in pre- and post-treatment samples under treatment arm not containing bevacizumab. C. TIL counts in pre- and post-treatment samples under treatment arm containing bevacizumab. D. TIL counts in pre- and post-treatment samples under treatment arm not containing bevacizumab. Paired pre- and post-treatment samples are connected by lines to indicate up or down change in each individual. P values are from Wilcoxon test. (PDF 58 kb)
Size effect on magnetism of Fe thin films in Fe/Ir superlattices
Creators: name: Andrieu, S.
name: Chatelain, C.
name: Lemine, M.
name: Berche, B.
name: Bauer, Ph.
Publisher: name: arXiv
Year: 2001
Subjects: subject: Materials Science (cond-mat.mtrl-sci)
subject: FOS: Physical sciences

description: In ferromagnetic thin films, the Curie temperature variation with the thickness is always considered as continuous when the thickness is varied from $n$ to $n+1$ atomic planes. We show that it is not the case for Fe in Fe/Ir superlattices. For an integer number of atomic planes, a unique magnetic transition is observed by susceptibility measurements, whereas two magnetic transitions are observed for fractional numbers of planes. This behavior is attributed to successive transitions of areas with $n$ and $n+1$ atomic planes, for which the $T_c$'s are not the same. Indeed, the magnetic correlation length is presumably shorter than the average size of the terraces. Monte carlo simulations are performed to support this explanation.
description: LaTeX file with Revtex, 5 pages, 5 eps figures, to appear in Phys. Rev. Lett
Mean field approximations for short range four body interactions at $ν=3/5$
Creators: name: Kusmierz, Bartosz
name: Wojs, Arkadiusz
name: J, Sreejith G
Publisher: name: arXiv
Year: 2019
Subjects: subject: Strongly Correlated Electrons (cond-mat.str-el)
subject: FOS: Physical sciences

description: Trial wavefunctions like the Moore-Read and Read-Rezayi states which minimize short range multibody interactions are candidate states for describing the fractional quantum Hall effects at filling factors $ν= 1/2$ and $ν= 2/5$ in the second Landau level. These trial wavefunctions are unique zero energy states of three body and four body interaction Hamiltonians respectively but are not close to the ground states of the Coulomb interaction. Previous studies using extensive parameter scans have found optimal two body interactions that produce states close to these. Here we focus on short ranged four body interaction and study two mean field approximations that reduce the four body interactions to two body interactions by replacing composite operators with their incompressible ground state expectation values. We present the results for pseudopotentials of these approximate interactions. Comparison of finite system spectra of the four body and the approximate interactions at filling fraction $ν=3/5$ show that these approximations produce good effective descriptions of the low energy structure of the four body ineraction Hamiltonian. The approach also independently reproduces the optimal two body interaction inferred from parameter scans. We also show that for $n=3$, but not for $n=4$, the mean field approximations of the $n$-body interaction is equivalent to particle hole symmetrization of the interaction.
description: 12 pages
Many Body Effects on Electron Tunneling through Quantum Dots in an Aharonov-Bohm Circuit
Creators: name: Izumida, Wataru
name: Sakai, Osamu
name: Shimizu, Yukihiro
Publisher: name: arXiv
Year: 1997
Subjects: subject: Mesoscale and Nanoscale Physics (cond-mat.mes-hall)
subject: Strongly Correlated Electrons (cond-mat.str-el)
subject: FOS: Physical sciences

description: Tunneling conductance of an Aharonov-Bohm circuit including two quantum dots is calculated based on the general expression of the conductance in the linear response regime of the bias voltage. The calculation is performed in a wide temperature range by using numerical renormalization group method. Various types of AB oscillations appear depending on the temperature and the potential depth of the dots. Especially, AB oscillations have strong higher harmonics components as a function of the magnetic flux when the potential of the dots is deep. This is related to the crossover of the spin state due to the Kondo effect on quantum dots. When the temperature rises up, the amplitude of the AB oscillations becomes smaller reflecting the breaking of the coherency.
description: 21 pages, 11 PostScript figures, LaTeX, uses jpsj.sty epsbox.sty
Existence, uniqueness and other properties of the BCT (minimal strain lapse and shift) gauge
Creators: name: Garfinkle, David
name: Gundlach, Carsten
name: Isenberg, James
name: OMurchadha, Niall
Publisher: name: arXiv
Year: 2000
Subjects: subject: General Relativity and Quantum Cosmology (gr-qc)
subject: FOS: Physical sciences

description: Brady, Creighton and Thorne have proposed a choice of the lapse and shift for numerical evolutions in general relativity that extremizes a measure of the rate of change of the three-metric (BCT gauge). We investigate existence and uniqueness of this gauge, and comment on its use in numerical time evolutions.
description: 5 pages, RevTex
A Computational Model for Spectral Modulation and Speech Perception Performance of Cochlear Implant Users
Creators: name: Alvarez, Franklin Yohan
Publisher: name: Zenodo
Year: 2019
Subjects: CI sound coding strategy
Cochlear implants
Computational modeling
FADE
Spectral modulation threshold
Speech reception threshold

description: In the development of new technologies for cochlear implants (CIs), there are many evaluation procedures that have to be done until it is implemented on hearing devices. The majority of such procedures consist of asking implanted volunteers to perform auditory tasks, but collecting the required data is time demanding. In this work, a computational model is presented to simulate two of the many tasks typically used to evaluate CI users performance: speech reception threshold (SRT), and spectral modulation threshold (SMT). The model uses a cochlear implant sound coding strategy, a peripheral auditory model to obtain the spike activity from auditory nerves and an adapter to extract the internal representation (IR). As backend, the simulation framework for auditory discrimination experiments (FADE) is implemented. The performance of three different CI sound coding strategies were compared, one with sequential stimulation and the other two with simultaneous stimulation with two and three channels respectively. Also, the impact of nerve fiber degeneration and number of functional fibers was studied. The model successfully performed SRT and SMT experiments resembling CI users. The CI sound coding strategy with triplet simultaneous stimulation performed the best in SRT experiments contrary to the empirical data, but the cause is discussed to be a mismatch in the overall firing rate between sound coding strategies. In SMT experiments the results were quite similar among the strategies. With worse nerve conditions, SRT performance decreased significantly while SMT performance barely changed. It is discussed that the model may be relying in the overall firing rate instead of the spectral shape to identify spectral ripple stimuli. Finally, It is discussed how different features affects the performance of the model, and whether is necessary to implement a different back-end to avoid modeling central auditory processes.
Two-dimensional effective action for matter fields coupled to the dilaton
Creators: name: Gusev, Yu. V.
name: Zelnikov, A. I.
Publisher: name: arXiv
Year: 1999
Subjects: subject: High Energy Physics - Theory (hep-th)
subject: General Relativity and Quantum Cosmology (gr-qc)
subject: FOS: Physical sciences

description: We revise the calculation of the one-loop effective action for scalar and spinor fields coupled to the dilaton in two dimensions. Applying the method of covariant perturbation theory for the heat kernel we derive the effective action in an explicitly covariant form that produces both the conformally invariant and the conformally anomalous terms.For scalar fields the conformally invariant part of the action is nonlocal. The obtained effective action is proved to be infrared finite. We also compute the one-loop effective action for scalar fields at finite temperature.
description: LaTeX, 25 pages
Additional file 5: of Immune profiling of pre- and post-treatment breast cancer tissues from the SWOG S0800 neoadjuvant trial
Creators: name: Xiaotong Li
name: Warren, Sarah
name: Pelekanou, Vasiliki
name: Wali, Vikram
name: Cesano, Alessandra
name: Mingdong Liu
name: Danaher, Patrick
name: Nathane Elliott
name: Nahleh, Zeina
name: Hayes, Daniel
name: Hortobagyi, Gabriel
name: Barlow, William
name: Hatzis, Christos
name: Pusztai, Lajos
Publisher: name: figshare
Year: 2019
Subjects: subject: Medicine
subject: Genetics
subject: FOS: Biological sciences
subject: Molecular Biology
subject: Pharmacology
subject: Immunology
subject: FOS: Clinical medicine
subject: Developmental Biology
subject: Cancer
subject: 110309 Infectious Diseases
subject: FOS: Health sciences
subject: Plant Biology
subject: 60506 Virology
subject: Computational Biology

description: Figure S2. Age of patient and MKI67 expression in cases with pathologic complete response (pCR) and residual disease (RD). A. Age of patient in cases with pCR and RD. B. MKI67 expressions in all pre-treatment samples with pCR and RD. C. MKI67 expressions in all post-treatment samples with pCR and RD. P values are from Wilcoxon test. (PDF 52 kb)
MOESM7 of A novel resveratrol derivative induces mitotic arrest, centrosome fragmentation and cancer cell death by inhibiting Îł-tubulin
Creators: name: Traversi, Gianandrea
name: Staid, David
name: Fiore, Mario
name: Zulema Percario
name: Trisciuoglio, Daniela
name: Antonioletti, Roberto
name: Morea, Veronica
name: Degrassi, Francesca
name: Cozzi, Renata
Publisher: name: figshare
Year: 2019
Subjects: subject: Biochemistry
subject: Cell Biology
subject: Molecular Biology
subject: Pharmacology
subject: 69999 Biological Sciences not elsewhere classified
subject: FOS: Biological sciences
subject: Cancer

description: Additional file 7. Additional materials and methods.
The Higher Education Space, Connecting Degree Programs from Individuals' Choices
Creators: name: Candia, Cristian
name: Encarnação, Sara
name: Pinheiro, Flávio L.
Publisher: name: arXiv
Year: 2018
Subjects: subject: Physics and Society (physics.soc-ph)
subject: FOS: Physical sciences

description: Is it possible to derive organizing principles of higher education systems from the applicants' choices? Here we introduce the Higher Education Space (HES) as a way to describe the complex relationship between degree programs. The HES is based on the application of methods from network science to data on the revealed preferences of applicants to the higher education systems of Chile and Portugal. Our work reveals: 1) the existence of a positive assortment of features -- such as gender balance, application scores, unemployment levels, demand-supply ratio, etc -- along the network structure of the HES; 2) that the decaying of the prevalence level of a feature from a focal degree program extends beyond the dyadic relationships captured by the HES; 3) temporal variations in different features do not spillover/propagate throughout the system in the same way; 4) differences in unemployment levels reported among pairs of degree programs are minimized when taking into consideration the connectivity structure of the HES, largely outperforming the differences in matched pairs using traditional similarity measures; and 5) grouping of degree programs based in the network structure of the HES provides an applicant perspective that complements existing classification systems. Our findings support the HES as a multi-dimensional framework that can effectively contribute to the governance of higher education systems.
description: 17 pages, 11 figures, 4 appendices
title: Έλεγχος συμμόρφωσης της τεκμηρίωσης του Συστήματος Διαχείρισης Ποιότητας της ATEbank ως προς τις απαιτήσεις του ISO 9001:2008
titleType: AlternativeTitle
Creators: name: Chatzistefani, Nefeli A.
Publisher: name: National Technological University of Athens
Year: 2012
Subjects: Αγροτική Τράπεζα Ελλάδας
Τεκμηρίωση
Συστήματα Διαχείρισης Ποιότητας
Διεθνές Πρότυπα
ISO 9001:2008
Documentation
Quality Management System
ATE Bank
International Standards

description: 142 σ.
description: Εθνικό Μετσόβιο Πολυτεχνείο--Μεταπτυχιακή Εργασία. Διεπιστημονικό-Διατμηματικό Πρόγραμμα Μεταπτυχιακών Σπουδών (Δ.Π.Μ.Σ.) “Εφαρμοσμένη Μηχανική”
description: Αντικείμενο της παρούσας διπλωματικής εργασίας με τίτλο "Έλεγχος Συμμόρφωσης της Τεκμηρίωσης του Συστήματος Διαχείρισης Ποιότητας της ATEbank ως προς τις απαιτήσεις του ISO 9001:2008" είναι η μελέτη και κατ'επέκταση η επιθεώρηση της Πολιτικής Διαχείρισης Ποιότητας της ATEbank Α.Ε.. Η ΑΤΕbank μέσω του Συστήματος Διαχείρισης Ποιότητας που εφαρμόζει και είναι σύμφωνο με το διεθνές πρότυπο ΕΝ ISO 9001, στοχεύει στην άριστη παροχή υπηρεσιών στους τομείς: i. της ταμειακής διαχείρισης & των μηχανογραφημένων πληρωμών κοινοτικών γεωργικών ενισχύσεων προς παραγωγούς-τελικούς αποδέκτες, και ii. της διαδικασίας ένταξης των ενδιαφερομένων στο πρόγραμμα πρόωρης συνταξιοδότησης αγροτών, της ταμειακής διαχείρισης & των μηχανογραφημένων πληρωμών των δικαιούχων του προγράμματος καθώς και τους προβλεπόμενους διοικητικούς και δειγματοληπτικούς ελέγχους. Σκοπός της παρούσας Διπλωματικής εργασίας είναι ο έλεγχος της συμμόρφωσης του Συστήματος Διαχείρισης Ποιότητας της ATEbank με το πρότυπο ISO 9001:2008. Η επιθεώρηση έγινε με βάση τον Γενικό Κανονισμό Αξιολόγησης και Πιστοποίησης Συστημάτων Διαχείρισης Ποιότητας ΑΠΣΔΠ Ε.01 του ΕΛΟΤ.
description: Τhis thesis entitled "Αssessment of conformity of the Quality Management System Documentation of ATEBank as to the requirements of ISO 9001: 2008" aims to study and inspect the Quality management policy of Atebank A.E. The inspection was done on the basis of the General Regulation for evaluation and certification of quality management systems "APSDP E. 01" of ELOT.
Structure-based small inhibitors search combined with molecular dynamics driven energies for human programmed cell death-1 (PD-1) protein
Creators: name: Waqas, Muhammad
name: Halim, Sobia Ahsan
name: Alsalman, Alhasan
name: Khan, Ajmal
name: Elkord, Eyad
name: Al-Harrasi, Ahmed
Publisher: name: Taylor & Francis
Year: 2023
Subjects: subject: Biophysics
subject: Biochemistry
subject: Cell Biology
subject: Genetics
subject: FOS: Biological sciences
subject: Molecular Biology
subject: Pharmacology
subject: Chemical Sciences not elsewhere classified
subject: Immunology
subject: FOS: Clinical medicine
subject: Biological Sciences not elsewhere classified
subject: Cancer

description: Human immune system is specialized in distinguishing normal cells from foreign particles mainly through proteins expressed on immune cells called ‘checkpoints’. Immune checkpoints work as a switch to activate and deactivate immune responses. T cells express one of the immune checkpoint, human programmed cell death-1 (PD-1), which normally operates as an off-switch function to protect the normal cell from T-cell attack. Binding of PD-1 to its ligand, the programmed cell death ligand (PD-L1/2) expressed on myeloid/cancer cells, induce downstream inhibitory signals, leading to tumor immune evasion. Targeting PD-1 or PD-L1 can boost the immune response against cancer cells. To design novel small molecule inhibitors for the PD-1, in silico structure-based screening on pharmacophoric points and molecular docking were performed. Based on the docking score and significant binding interaction with the crucial residues of PD-1 (Thr59, Glu61, Ser62, Glu84, Arg86 and Ala132), compounds were selected from the ZINC20 database, and their dynamic behavior and conformational stability were examined through molecular dynamic simulations. Besides, the Molecular Mechanics/Generalized Born Surface Area (MM/GBSA) method was used to calculate the binding strength of each selected inhibitor complexed with PD-1. The binding energy calculations revealed that these selected inhibitors show a considerable affinity for PD-1. The selected novel inhibitors exhibit excellent drug-like and pharmacokinetic properties (absorption, distribution, metabolism, excretion and toxicity). In conclusion, the identified novel compounds (ZINC1443480030, ZINC1002854123, ZINC988238128, ZINC1481242350, ZINC1001739421, ZINC1220816434 and ZINC1167786692) from the current study can be validated in-vitro as potential PD-1 inhibitors and for discovery of novel drugs against PD-1 in the future. Communicated by Ramaswamy H. Sarma
Comments on One-Form Global Symmetries and Their Gauging in 3d and 4d
Creators: name: Hsin, Po-Shen
name: Lam, Ho Tat
name: Seiberg, Nathan
Publisher: name: arXiv
Year: 2018
Subjects: subject: High Energy Physics - Theory (hep-th)
subject: Strongly Correlated Electrons (cond-mat.str-el)
subject: FOS: Physical sciences

description: We study 3d and 4d systems with a one-form global symmetry, explore their consequences, and analyze their gauging. For simplicity, we focus on $\mathbb{Z}_N$ one-form symmetries. A 3d topological quantum field theory (TQFT) $\mathcal{T}$ with such a symmetry has $N$ special lines that generate it. The braiding of these lines and their spins are characterized by a single integer $p$ modulo $2N$. Surprisingly, if $\gcd(N,p)=1$ the TQFT factorizes $\mathcal{T}=\mathcal{T}'\otimes \mathcal{A}^{N,p}$. Here $\mathcal{T}'$ is a decoupled TQFT, whose lines are neutral under the global symmetry and $\mathcal{A}^{N,p}$ is a minimal TQFT with the $\mathbb{Z}_N$ one-form symmetry of label $p$. The parameter $p$ labels the obstruction to gauging the $\mathbb{Z}_N$ one-form symmetry; i.e.\ it characterizes the 't Hooft anomaly of the global symmetry. When $p=0$ mod $2N$, the symmetry can be gauged. Otherwise, it cannot be gauged unless we couple the system to a 4d bulk with gauge fields extended to the bulk. This understanding allows us to consider $SU(N)$ and $PSU(N)$ 4d gauge theories. Their dynamics is gapped and it is associated with confinement and oblique confinement -- probe quarks are confined. In the $PSU(N)$ theory the low-energy theory can include a discrete gauge theory. We will study the behavior of the theory with a space-dependent $θ$-parameter, which leads to interfaces. Typically, the theory on the interface is not confining. Furthermore, the liberated probe quarks are anyons on the interface. The $PSU(N)$ theory is obtained by gauging the $\mathbb{Z}_N$ one-form symmetry of the $SU(N)$ theory. Our understanding of the symmetries in 3d TQFTs allows us to describe the interface in the $PSU(N)$ theory.
description: 56 pages, 3 figures, 5 tables