cometadata/datacite-rtg-text-other-reclassification-records huggingface dataset:
Weak-field limit of f(R)-gravity in three and more spatial dimensions
Creators: name: Eingorn, Maxim
name: Zhuk, Alexander
Publisher: name: arXiv
Year: 2011
Subjects: subject: General Relativity and Quantum Cosmology (gr-qc)
subject: High Energy Astrophysical Phenomena (astro-ph.HE)
subject: High Energy Physics - Theory (hep-th)
subject: FOS: Physical sciences

description: We investigate a point-like massive source in non-linear f(R) theories in the case of arbitrary number of spatial dimensions D\geq 3. If D>3 then extra dimensions undergo toroidal compactification. We consider a weak-field approximation with Minkowski and de Sitter background solutions. In both these cases point-like massive sources demonstrate good agreement with experimental data only in the case of ordinary three-dimensional (D=3) space. We generalize this result to the case of perfect fluid with dust-like equations of state in the external and internal spaces. This perfect fluid is uniformly smeared over all extra dimensions and enclosed in a three-dimensional sphere. In ordinary three dimensional (D=3) space, our formulas are useful for experimental constraints on parameters of f(R) models.
description: 8 pages, Revtex4, no figures
Multi-scale mapping of changes in tropical reefs, Geohab 2023, Oral presentation
Creators: name: Contini, Matteo
name: Bonhommeau, Sylvain
name: Chevrier, Thomas
name: Ravitchandirane, Mervyn
name: Julien, Mohan
name: Poulain, Sylvain
name: Daudon, Justine Talpaert
name: Barde, Julien
name: Joly, Alexis
Publisher: name: Zenodo
Year: 2023
Subjects: Geohab
Deep Learning
Machine Learning
Citizen science
Marine monitoring
Cartography
Coastal ecosystem
Photogrammetry
Multi-scale analysis

description: Multi-scale mapping of changes in tropical reefs. Oral presentation for the 2023 International Symposium on Marine Geological and Biological Habitat Mapping (GeoHab '23). Saint-Gilles-Les-Bains, La Réunion, France, May 8-12.
Secure quantum carriers for quantum state sharing
Creators: name: Karimipour, Vahid
name: Marvian, Milad
Publisher: name: arXiv
Year: 2010
Subjects: subject: Quantum Physics (quant-ph)
subject: FOS: Physical sciences

description: We develop the concept of quantum carrier and show that messages can be uploaded and downloaded from this carrier and while in transit, these messages are hidden from external agents. We explain in detail the working of the quantum carrier for different communication tasks, including quantum key distribution, classical secret and quantum state sharing among a set of $n$ players according to general threshold schemes. The security of the protocol is discussed and it is shown that only the legitimate subsets can retrieve the secret messages, the collaboration of all the parties is needed for the continuous running of the protocol and maintaining the carrier.
description: 19 pages, extensive revisions, accepted for publication in International Journal of Quantum Information
Additional file 18 of A metabolic and physiological design study of Pseudomonas putida KT2440 capable of anaerobic respiration
Creators: name: Kampers, Linde F. C.
name: Koehorst, Jasper J.
name: Heck, Ruben J. A. Van
name: Suarez-Diez, Maria
name: Stams, Alfons J. M.
name: Schaap, Peter J.
Publisher: name: figshare
Year: 2021
Subjects: subject: Microbiology
subject: FOS: Biological sciences

description: Additional file 18. Potential roles of Dau, Nif, Rnf, RhfH operons in anaerobic respiration.
Non-coplanar trajectory based volumetric modulated arc therapy
Creators: name: Marshall, Jakob
Publisher: name: University of British Columbia
Year: 2022

description: Trajectory volumetric modulated arc therapy (VMAT) is an emerging technique in high precision radiation therapy. Trajectory VMAT permits modulated radiation treatment delivery using dynamic rotation of the treatment couch and linear accelerator gantry. The couch and gantry angles combine to alter the orientation of radiation beams incident on the patient deeming particularly useful for avoidance of organs at risk (OAR) while maintaining treatment coverage of the tumour. Trajectory VMAT treatment plans require optimization of the beam orientations (trajectory) and radiation modulation along the trajectory. A framework and algorithm for optimizing trajectory VMAT treatment plans is presented. The framework first optimizes the trajectory around the patient before incorporating modulation of the radiation beam using VMAT optimization. The trajectory optimization step relies on a dosimetric beam scoring map, termed the 4Pi intensity map, to rank beam orientations. The 4Pi intensity map characterizes the dosimetric contribution of each feasible beam orientation to the optimal solution with beams at each point on the 4Pi sphere. The 4Pi intensity map is shown to rank beam orientations based on their ability to treat the target volume and avoid OAR and healthy tissue exposure. Using Dijkstra’s shortest path algorithm, 3700 trajectories (with differing start and end points of the trajectory) are generated using the 4Pi intensity map. Each trajectory is re-optimized and evaluated on its dosimetric quality with the best trajectory taken as optimal. Optimization of the radiation modulation along the trajectory is performed using VMAT optimization to obtain the optimal trajectory VMAT treatment plan. The 4Pi intensity map was shown to encode the information provided by a geometric overlap map, a map used for trajectory optimization in the literature [1-3]. Trajectory VMAT treatment plans created with the developed framework were assessed on six patients with single brain lesions finding comparable or superior dosimetric quality to coplanar VMAT treatment plans optimized in the Eclipse treatment planning system. In total, the developed trajectory optimization framework presents an efficient pre-processing step to VMAT optimization to permit trajectory VMAT treatment planning in hopes of generating high quality treatment plans to improve patient outcomes.
Bouncing Universe and phantom crossing in Modified Gravity and its reconstruction
Creators: name: Farajollahi, H.
name: Milani, F.
Publisher: name: arXiv
Year: 2010
Subjects: subject: General Relativity and Quantum Cosmology (gr-qc)
subject: Cosmology and Nongalactic Astrophysics (astro-ph.CO)
subject: High Energy Physics - Theory (hep-th)
subject: FOS: Physical sciences

description: In this paper we consider FRW cosmology in modified gravity which contain arbitrary functions $f(ϕ)$. It is shown that the bouncing solution appears in the model whereas the equation of state (EoS) parameter crosses the phantom divider. The reconstruction of the model is also investigated with the aim to reconstruct the arbitrary functions and variables of the model.
description: 18 pages, 10 figures
Polish topometric groups
Creators: name: Yaacov, Itaï Ben
name: Berenstein, Alexander
name: Melleray, Julien
Publisher: name: arXiv
Year: 2010
Subjects: subject: Logic (math.LO)
subject: FOS: Mathematics

description: We define and study the notion of \emph{ample metric generics} for a Polish topological group, which is a weakening of the notion of ample generics introduced by Kechris and Rosendal in \cite{Kechris-Rosendal:Turbulence}. Our work is based on the concept of a \emph{Polish topometric group}, defined in this article. Using Kechris and Rosendal's work as a guide, we explore consequences of ample metric generics (or, more generally, ample generics for Polish topometric groups). Then we provide examples of Polish groups with ample metric generics, such as the isometry group $\Iso(\bU_1)$ of the bounded Urysohn space, the unitary group ${\mathcal U}(\ell_2)$ of a separable Hilbert space, and the automorphism group $\Aut([0,1],λ)$ of the Lebesgue measure algebra on $[0,1]$. We deduce from this and earlier work of Kittrell and Tsankov that this last group has the automatic continuity property, i.e., any morphism from $\Aut([0,1],λ)$ into a separable topological group is continuous.
A Note on Recovering Matrices in Linear Families from Generic Matrix-Vector Products
Creators: name: Otto, Samuel E.
Publisher: name: Zenodo
Year: 2023
Subjects: matrix recovery, matrix-vector product, randomized algorithm, special matrices, generic properties, measure theory

description: We consider a recovery problem for an unknown matrix $A$ lying in a known subspace of real $m\times n$ matrices.
 Examples of such subspaces or ``linear families'' include Toeplitz, Hankel, circulant, and tridiagonal matrices.
 With fixed nonnegative integers $q_R$ and $q_L$, the goal of the recovery problem is to choose a real $n\times q_R$ matrix $X_R$ and a real $m\times q_L$ matrix $X_L$ so that $A$ is uniquely determined within its family when $Y_R = A X_R$ and $Y_L = A^T X_L$ are known.
 The columns of $Y_R$ and $Y_L$ are formed by matrix-vector products of $A$ and $A^T$ with the columns of $X_R$ and $X_L$ to be determined.
 We show that if this problem has a solution, then the pairs of matrices $(X_R, X_L)$ that have the stated dimensions and do not solve the recovery problem form a set of Lebesgue measure zero.
 It follows that square Toeplitz, Hankel, circulant, and tridiagonal matrices are uniquely determined by their matrix-vector products with almost any $q_R = 2,2,1,$ and $3$ vectors respectively and $q_L=0$.
Perfect drain for the Maxwell Fish Eye lens
Creators: name: Gonzalez, Juan C.
name: Benitez, Pablo
name: Minano, Juan C.
Publisher: name: arXiv
Year: 2010
Subjects: subject: Optics (physics.optics)
subject: FOS: Physical sciences

description: Perfect imaging for electromagnetic waves using the Maxwell Fish Eye (MFE) requires a new concept: the perfect drain. From the mathematical point of view, a perfect point drain is just like an ideal point source, except that it drains power from the electromagnetic field instead of generating it. We show here that the perfect drain for the MFE can be seen as a dissipative region the diameter of which tends to zero. The complex permittivity $\varepsilon$ of this region cannot take arbitrary values, however, since it depends on the size of the drain as well as on the frequency. This interpretation of the perfect drain connects well with central concepts of electromagnetic theory. This opens up both the modeling in computer simulations and the experimental verification of the perfect drain.
Apocalyptic quantum gravity
Creators: name: Wakeham, David
Publisher: name: University of British Columbia
Year: 2022

description: The AdS/CFT dictionary connects bulk gravitational physics in an asymptotically anti-de Sitter (AdS) background to the quantum dynamics of a conformally invariant field theory (CFT), defined on the asymptotic boundary. In this thesis, we explore, extend and apply this dictionary for a boundary CFT (BCFT), with a particular focus on the physics of black holes. In a BCFT, a physical boundary is added to the CFT. The simplest dual geometry is an asymptotically AdS spacetime cut off by a physical surface called an end-of-the-world (ETW) brane, homologous to the BCFT boundary. For certain highly symmetric configurations of the BCFT called boundary states, symmetry constrains these ETW branes to a one-parameter family labelled by extrinsic curvature. By placing the CFT boundary in Euclidean time, we construct a one-parameter family of black hole microstates in arbitrary dimension. In two dimensions, we analytically calculate minimal surfaces in the bulk geometry and show that, for some parameter regimes, they pierce the black hole horizon and become disconnected. According to the Hubeny-Rangamani-Ryu-Takayanagi (HRT) formula, these surfaces compute entanglement entropy in the field theory. We find a set of conditions which ensure that the microscopic entanglement entropy, arising from a correlator of twist operators, agrees with the bulk result. In particular, the BCFT reproduces the phase transition between connected and disconnected minimal surfaces. This twist correlator can be immediately evaluated on any conformally related background, giving access to entanglement entropy in a number of other contexts of physical interest. By analytically continuing the thermofield state of a half-line, we arrive at a simple toy model of an evaporating black hole, where the phase transition in minimal surface corresponds to information escaping from the interior. For the BCFT on an interval, this transition can be recast in terms of the performability of a certain set of quantum tasks. We use related techniques to constrain the operator content of BCFTs dual to spacetimes with a sharp brane in arbitrary dimension. We discover they are finely tuned, with a fragile causal structure which becomes “fuzzy” under small changes to the spectrum.
Detections of Faint Lyman-alpha Emitters at z = 5.7: Galaxy Building Blocks and Engines of Reionization
Creators: name: Dressler, Alan
name: Martin, Crystal L.
name: Henry, Alaina
name: Sawicki, Marcin
name: McCarthy, Patrick
Publisher: name: arXiv
Year: 2011
Subjects: subject: Cosmology and Nongalactic Astrophysics (astro-ph.CO)
subject: FOS: Physical sciences

description: We report results of a unprecedentedly deep, blind search for Ly-alpha emitters (LAEs) at z = 5.7 using IMACS, the Inamori-Magellan Areal Camera & Spectrograph, with the goal of identifying missing sources of reionization that could also be basic building blocks for today's L* galaxies. We describe how improvements in wide field imaging with the Baade telescope, upgrades to IMACS, and the accumulation of ~20 hours of integration per field in excellent seeing led to the detection of single-emission-line sources as faint as F ~ 2 x 10^{-18} ergs s^{-1} cm^{-2}, a sensitivity 5 times deeper than our first search (Martin et al. 2008). A reasonable correction for foreground interlopers implies a steep rise of approximately an order of magnitude in source density for a factor of four drop in flux, from F = 10^{-17.0} ergs s^{-1} cm^{-2} to F = 10^{-17.6} (2.5) x 10^{-18} ergs s^{-1} cm^{-2}. At this flux the putative LAEs have reached a surface density of ~1 per sq arcminute -- a comoving volume density of 4 x 10^{-3} Mpc^{-3}, several times the density of L* galaxies today. Such a population of faint LAEs would account for a significant fraction of the critical flux density required to complete reionization at this epoch, and would be good candidates for building blocks of stellar mass ~10^{8-9} Msun for the young galaxies of this epoch.
description: 15 pages, 12 figures. Accepted 2011 July 20 for publication to ApJ
Additional file 1 of Relationship between multimorbidity, disease cluster and all-cause mortality among older adults: a retrospective cohort analysis
Creators: name: He, Kun
name: Zhang, Wenli
name: Hu, Xueqi
name: Zhao, Hao
name: Guo, Bingxin
name: Shi, Zhan
name: Zhao, Xiaoyan
name: Yin, Chunyu
name: Shi, Songhe
Publisher: name: figshare
Year: 2021
Subjects: subject: Medicine
subject: Sociology
subject: FOS: Sociology
subject: Biological Sciences not elsewhere classified
subject: Cancer
subject: Science Policy

description: Additional file 1: Supplementary Figure 1. Flow diagram of participant selection. Supplemental Table 1. The population attributable risk percent and the number needed to screened for all-cause mortality based on LTC count. Supplemental Table 2. Multimorbidity and all-cause mortality: Multiple logistic regression analysis. This table shows that being older, living without partner, and being underweight had a higher risk of mortality. In contrast, participants who were female, overweight, class I obesity, and physically active had a significantly lower adjusted risk of all-cause mortality. Supplemental Table 3. Comparison of LTCs (self-report vs physical examination) in prediction of all-cause mortality. Supplemental Table 4. Multivariable Adjusted odds ratio (95% confidence interval) for multimorbidity and all-cause mortality according to the different classification by BMI. Supplemental Table 5. The most impactful LTCs combinations in stratified logistic regression analysis for mortality (based on LTC count). these three tables show that the sensitivity analysis yielded similar findings as our main results, and the risk of death increased with the increase in LTC count.
Cosmic Dynamics in the Chameleon Cosmology
Creators: name: Farajollahi, H.
name: Salehi, A.
Publisher: name: arXiv
Year: 2010
Subjects: subject: General Relativity and Quantum Cosmology (gr-qc)
subject: Cosmology and Nongalactic Astrophysics (astro-ph.CO)
subject: High Energy Physics - Theory (hep-th)
subject: FOS: Physical sciences

description: We study in this paper chameleon cosmology applied to Friedmann-Robertson-Walker space, which gives rise to the equation of state (EoS) parameter larger than -1 in the past and less than -1 today, satisfying current observations. We also study cosmological constraints on the model using the time evolution of the cosmological redshift of distant sources which directly probes the expansion history of the universe. Due to the evolution of the universe's expansion rate, the model independent Cosmological Redshift Drift (CRD)test is expected to experience a small, systematic drift as a function of time. The model is supported by the observational data obtained from the test.
description: 16 pages, 9 figures
Additional file 1 of Infantile onset Sandhoff disease: clinical manifestation and a novel common mutation in Thai patients
Creators: name: Thipwimol Tim-Aroon
name: Khunton Wichajarn
name: Kamornwan Katanyuwong
name: Pranoot Tanpaiboon
name: Nithiwat Vatanavicharn
name: Kullasate Sakpichaisakul
name: Arthaporn Kongkrapan
name: Jakris Eu-Ahsunthornwattana
name: Supranee Thongpradit
name: Moolsuwan, Kanya
name: Nusara Satproedprai
name: Surakameth Mahasirimongkol
name: Tassanee Lerksuthirat
name: Bhoom Suktitipat
name: Natini Jinawath
name: Wattanasirichaigoon, Duangrurdee
Publisher: name: figshare
Year: 2021
Subjects: subject: Genetics
subject: FOS: Biological sciences

description: Additional file 1: Supplemental Table S1. Primers sequences and conditions for HEXB mutation analysis. Supplemental Table S2. Scores and prediction of pathogenicity for missense variants identified using in silico analysis tools.
Event Horizon Deformations in Extreme Mass-Ratio Black Hole Mergers
Creators: name: Hamerly, Ryan
name: Chen, Yanbei
Publisher: name: arXiv
Year: 2010
Subjects: subject: General Relativity and Quantum Cosmology (gr-qc)
subject: FOS: Physical sciences

description: We study the geometry of the event horizon of a spacetime in which a small compact object plunges into a large Schwarzschild black hole. We first use the Regge-Wheeler and Zerilli formalisms to calculate the metric perturbations induced by this small compact object, then find the new event horizon by propagating null geodesics near the unperturbed horizon. A caustic is shown to exist before the merger. Focusing on the geometry near the caustic, we show that it is determined predominantly by large-l perturbations, which in turn have simple asymptotic forms near the point at which the particle plunges into the horizon. It is therefore possible to obtain an analytic characterization of the geometry that is independent of the details of the plunge. We compute the invariant length of the caustic. We further show that among the leading-order horizon area increase, half arises from generators that enter the horizon through the caustic, and the rest arises from area increase near the caustic, induced by the gravitational field of the compact object.
description: 23 pages, 14 figures
The half-life of $^{221}$Fr in Si and Au at 4K and at mK temperatures
Creators: name: Wauters, F.
name: Verstichel, B.
name: Breitenfeldt, M.
name: De Leebeeck, V.
name: Kozlov, V. Yu.
name: Kraev, I.
name: Roccia, S.
name: Soti, G.
name: Tandecki, M.
name: Traykov, E.
name: Van Gorp, S.
name: Z'akouck'y, D.
name: Severijns, N.
Publisher: name: arXiv
Year: 2010
Subjects: subject: Nuclear Experiment (nucl-ex)
subject: FOS: Physical sciences

description: The half-life of the $α$ decaying nucleus $^{221}$Fr was determined in different environments, i.e. embedded in Si at 4 K, and embedded in Au at 4 K and about 20 mK. No differences in half-life for these different conditions were observed within 0.1%. Furthermore, we quote a new value for the absolute half-life of $^{221}$Fr of t$_{1/2}$ = 286.1(10) s, which is of comparable precision to the most precise value available in literature.
Orthogonal subsets of root systems and the orbit method
Creators: name: Ignatyev, Mikhail V.
Publisher: name: arXiv
Year: 2010
Subjects: subject: Representation Theory (math.RT)
subject: FOS: Mathematics
subject: 20C99

description: Let $k$ be the algebraic closure of a finite field, $G$ a Chevalley group over $k$, $U$ the maximal unipotent subgroup of $G$. To each orthogonal subset $D$ of the root system of the group $G$ and each set $ξ$ of $|D|$ non-zero scalars from $k$ one can assign the coadjoint orbit of the group $U$. We prove that the dimension of such an orbit does not depend on $ξ$. We also give an upper bound of the dimension in terms of the Weyl group.
description: 16 pages
Additional file 1 of Precision Family Spirit: a pilot randomized implementation trial of a precision home visiting approach with families in Michigan—trial rationale and study protocol
Creators: name: Ingalls, Allison
name: Barlow, Allison
name: Kushman, Elizabeth
name: Leonard, Amanda
name: Martin, Lisa
name: Precision Family Spirit Study Team
name: West, Allison L.
name: Neault, Nicole
name: Haroz, Emily E.
Publisher: name: figshare
Year: 2021
Subjects: subject: Medicine
subject: Sociology
subject: FOS: Sociology
subject: 69999 Biological Sciences not elsewhere classified
subject: FOS: Biological sciences
subject: Science Policy
subject: 110309 Infectious Diseases
subject: FOS: Health sciences
subject: Computational Biology

description: Additional file 1:. Precision Family Spirit Lesson Pathways. Title of data: Precision Family Spirit Lesson Pathways – Pregnancy to 12 Months Postpartum. Description of data: Details of the five Precision Family Spirit pathways (pregnancy-12 months postpartum), including period and timepoint
Thermodynamics and Structural Properties of the High Density Gaussian Core Model
Creators: name: Ikeda, Atsushi
name: Miyazaki, Kunimasa
Publisher: name: arXiv
Year: 2011
Subjects: subject: Soft Condensed Matter (cond-mat.soft)
subject: FOS: Physical sciences

description: We numerically study thermodynamic and structural properties of the one-component Gaussian core model (GCM) at very high densities. The solid-fluid phase boundary is carefully determined. We find that the density dependence of both the freezing and melting temperatures obey the asymptotic relation, $\log T_f$, $\log T_m \propto -ρ^{2/3}$, where $ρ$ is the number density, which is consistent with Stillinger's conjecture. Thermodynamic quantities such as the energy and pressure and the structural functions such as the static structure factor are also investigated in the fluid phase for a wide range of temperature above the phase boundary. We compare the numerical results with the prediction of the liquid theory with the random phase approximation (RPA). At high temperatures, the results are in almost perfect agreement with RPA for a wide range of density, as it has been already shown in the previous studies. In the low temperature regime close to the phase boundary line, although RPA fails to describe the structure factors and the radial distribution functions at the length scales of the interparticle distance, it successfully predicts their behaviors at shorter length scales. RPA also predicts thermodynamic quantities such as the energy, pressure, and the temperature at which the thermal expansion coefficient becomes negative, almost perfectly. Striking ability of RPA to predict thermodynamic quantities even at high densities and low temperatures is understood in terms of the decoupling of the length scales which dictate thermodynamic quantities from the interparticle distance which dominates the peak structures of the static structure factor due to the softness of the Gaussian core potential.
description: 10 pages, 10 figures
A Note on Lefschetz Fibrations on Compact Stein 4-Manifolds
Creators: name: Akbulut, Selman
name: Arikan, M. Firat
Publisher: name: arXiv
Year: 2010
Subjects: subject: Geometric Topology (math.GT)
subject: Algebraic Geometry (math.AG)
subject: Symplectic Geometry (math.SG)
subject: FOS: Mathematics
subject: 58D27, 58A05, 57R65

description: Loi-Piergallini and Akbulut-Ozbagci showed that every compact Stein surface admits a Lefschetz fibration over the 2-disk with bounded fibers. In this note we give a more intrinsic alternative proof of this result.
description: 14 pages, 15 figures
การสร้างความตระหนักต่อสิ่งแวดล้อมสำหรับนิสิตวิชาชีพครู ด้วยวิธีการเรียนรู้แบบวิทยาศาสตร์ เทคโนโลยี สังคมและสิ่งแวดล้อม
Creators: name: รุ่งทิวา  กองสอน
Publisher: name: วิทยาลัยเซาธ์อีสท์บางกอก
Year: 2019
Subjects: ความตระหนักต่อสิ่งแวดล้อม
วิธีการเรียนรู้แบบวิทยาศาสตร์
เทคโนโลยี
สังคมและสิ่งแวดล้อม
นิสิตวิชาชีพครู

description: วารสารวิชาการวิทยาลัยเซาธ์อีสท์บางกอก, 5, 1, 25-37
Optimal local expansion of W states using linear optics and Fock states
Creators: name: Ikuta, Rikizo
name: Tashima, Toshiyuki
name: Yamamoto, Takashi
name: Koashi, Masato
name: Imoto, Nobuyuki
Publisher: name: arXiv
Year: 2010
Subjects: subject: Quantum Physics (quant-ph)
subject: FOS: Physical sciences

description: We derive the maximum success probability of the circuits with passive linear optics for expanding an N-photon W state to an (N + n)-photon W state, by accessing only one photon of the initial W state and adding n photons in a Fock state. We show that the maximum success probability is achieved by a polarization-dependent beamsplitter and n-1 polarization-independent beamsplitters.
description: 9 pages, 4 figures
Fixed points of inhomogeneous smoothing transforms
Creators: name: Alsmeyer, Gerold
name: Meiners, Matthias
Publisher: name: arXiv
Year: 2010
Subjects: subject: Probability (math.PR)
subject: FOS: Mathematics
subject: 60E05 (Primary) 60J80, 39B22 (Secondary)

description: We consider the inhomogeneous version of the fixed-point equation of the smoothing transformation, that is, the equation $X \stackrel{d}{=} C + \sum_{i \geq 1} T_i X_i$, where $\stackrel{d}{=}$ means equality in distribution, $(C,T_1,T_2,...)$ is a given sequence of non-negative random variables and $X_1,X_2,...$ is a sequence of i.i.d.\ copies of the non-negative random variable $X$ independent of $(C,T_1,T_2,...)$. In this situation, $X$ (or, more precisely, the distribution of $X$) is said to be a fixed point of the (inhomogeneous) smoothing transform. In the present paper, we give a necessary and sufficient condition for the existence of a fixed point. Further, we establish an explicit one-to-one correspondence with the solutions to the corresponding homogeneous equation with C=0. Using this correspondence, we present a full characterization of the set of fixed points under mild assumptions.
Assortment planning and price optimization with satisficing customers
Creators: name: Pourhossein, Forough
Publisher: name: University of British Columbia
Year: 2022

description: This dissertation addresses the implications of the satisficing decision making in retail and revenue management. In the first essay, we incorporate the satisficing behavior of customers in an assortment optimization problem. While different approaches to modelling customer choice have been adopted in assortment planning, all assume customers are utility maximizers. Our work bridges the research streams of assortment planning and bounded rationality, particularly satisficing behavior. Furthermore, by defining a limit for the search budget of customers, based on which customers leave without purchase after examining a certain number of items, we bring a new perspective to the assortment planning literature. We formulate this optimization problem and prove that the firm's problem of finding the optimal assortment is NP-hard. We also establish certain structural properties of the optimal decision to reformulate the problem as a mixed integer program. We show the size of the optimal assortment cannot exceed the maximum search budget of all customers. The second essay investigates the consequences of ignoring the satisficing behavior of customers. We identify analytically a tight upper bound on the firm's percentage loss of expected profit for small instances when it assumes incorrectly that its customers are utility maximizers. In this regard, we take the multinomial logit choice model as the representative of a utility maximizing model. For larger instances, we take a numerical approach to characterize the loss. Our results indicate that when the firm is dealing with satisficers, it may face considerable profit loss by ignoring this type of behavior. In the third essay, we propose a price optimization model for a firm offering two substitutable items to satisficing customers. We define acceptability probability functions for each item and formulate the demand of each product based on the assumption that customers examine the items one-by-one until they find an acceptable alternative. We prove unimodality of the revenue function when the acceptability probabilities follow certain structures. We then provide insights into price dispersion of a utility maximizing pricing model and our satisficing model, as well as the revenue loss of a firm adopting an incorrect choice model.
The Normalized Graph Cut and Cheeger Constant: from Discrete to Continuous
Creators: name: Arias-Castro, Ery
name: Pelletier, Bruno
name: Pudlo, Pierre
Publisher: name: arXiv
Year: 2010
Subjects: subject: Statistics Theory (math.ST)
subject: FOS: Mathematics

description: Let M be a bounded domain of a Euclidian space with smooth boundary. We relate the Cheeger constant of M and the conductance of a neighborhood graph defined on a random sample from M. By restricting the minimization defining the latter over a particular class of subsets, we obtain consistency (after normalization) as the sample size increases, and show that any minimizing sequence of subsets has a subsequence converging to a Cheeger set of M.
Large Miscibility Gap in the Ba(Mn_xFe_{1-x})2As2 System
Creators: name: Pandey, Abhishek
name: Anand, V. K.
name: Johnston, D. C.
Publisher: name: arXiv
Year: 2011
Subjects: subject: Superconductivity (cond-mat.supr-con)
subject: Materials Science (cond-mat.mtrl-sci)
subject: FOS: Physical sciences

description: The compounds BaMn2As2 and BaFe2As2 both crystallize in the body-centered-tetragonal ThCr2Si2-type (122-type) structure at room temperature but exhibit quite different unit cell volumes and very different magnetic and electronic transport properties. Evidently reflecting these disparities, we have discovered a large miscibility gap in the system Ba(Mn_xFe_{1-x})2As2. Rietveld refinements of powder x-ray diffraction (XRD) measurements on samples slow-cooled from 1000 C to room temperature (RT) reveal a two-phase mixture of BaMn2As2 and Ba(Mn_{0.12}Fe_{0.88})2As2 phases together with impurity phases for x = 0.2, 0.4, 0.5, 0.6 and 0.8. We infer that there exists a miscibility gap in this system at 300 K with composition limits 0.12 < x < 1. For samples quenched from 1000 C to 77 K, the refinements of RT XRD data indicate that the miscibility gap at RT narrows at 1000 C to 0.2 < x < 0.8. Samples with x=0.4, 0.5 and 0.6 quenched from 1100-1400 C to 77 K contain a single 122-type phase together with significant amounts of Fe_{1-x}Mn_xAs and FeAs2 impurity phases. These results indicate that the system is not a pseudo-binary system over the whole composition range and that the 122-type phase has a significant homogeneity range at these temperatures. Magnetic susceptibility, electrical resistivity and heat capacity measurements versus temperature of the single-phase quenched polycrystalline samples with x = 0.2 and 0.8 and for lightly doped BaMn2As2 crystals are reported.
description: 14 pages, 16 figures, 3 tables; published version
Sequence correlations shape protein promiscuity
Creators: name: Lukatsky, David B.
name: Afek, Ariel
name: Shakhnovich, Eugene I.
Publisher: name: arXiv
Year: 2010
Subjects: subject: Biomolecules (q-bio.BM)
subject: Genomics (q-bio.GN)
subject: Molecular Networks (q-bio.MN)
subject: FOS: Biological sciences

description: We predict analytically that diagonal correlations of amino acid positions within protein sequences statistically enhance protein propensity for nonspecific binding. We use the term 'promiscuity' to describe such nonspecific binding. Diagonal correlations represent statistically significant repeats of sequence patterns where amino acids of the same type are clustered together. The predicted effect is qualitatively robust with respect to the form of the microscopic interaction potentials and the average amino acid composition. Our analytical results provide an explanation for the enhanced diagonal correlations observed in hubs of eukaryotic organismal proteomes [J. Mol. Biol. 409, 439 (2011)]. We suggest experiments that will allow direct testing of the predicted effect.
Additional file 1 of Long-term survival with sebelipase alfa enzyme replacement therapy in infants with rapidly progressive lysosomal acid lipase deficiency: final results from 2 open-label studies
Creators: name: Vijay, Suresh
name: Anais Brassier
name: Arunabha Ghosh
name: Fecarotta, Simona
name: Abel, Florian
name: Marulkar, Sachin
name: Jones, Simon A.
Publisher: name: figshare
Year: 2021
Subjects: subject: Space Science
subject: Medicine
subject: Sociology
subject: FOS: Sociology
subject: Immunology
subject: FOS: Clinical medicine
subject: Cancer
subject: 110309 Infectious Diseases
subject: FOS: Health sciences

description: Additional file 1: Protocol-Defined Dose Escalation Criteria.
Additional file 2 of Precision Family Spirit: a pilot randomized implementation trial of a precision home visiting approach with families in Michigan—trial rationale and study protocol
Creators: name: Ingalls, Allison
name: Barlow, Allison
name: Kushman, Elizabeth
name: Leonard, Amanda
name: Martin, Lisa
name: Precision Family Spirit Study Team
name: West, Allison L.
name: Neault, Nicole
name: Haroz, Emily E.
Publisher: name: figshare
Year: 2021
Subjects: subject: Medicine
subject: Sociology
subject: FOS: Sociology
subject: 69999 Biological Sciences not elsewhere classified
subject: FOS: Biological sciences
subject: Science Policy
subject: 110309 Infectious Diseases
subject: FOS: Health sciences
subject: Computational Biology

description: Additional file 2:. SPIRIT-CONSORT Extension to Pilot Trials. Title of data: Adapted and combined SPIRIT 2013 Checklist and CONSORT Extension to Pilot Trials. Description of data: An adaptation of recommended items to address in a clinical trial protocol and related documents
Guiding-center dynamics of vortex dipoles in Bose-Einstein condensates
Creators: name: Middelkamp, S.
name: Torres, P. J.
name: Kevrekidis, P. G.
name: Frantzeskakis, D. J.
name: Carretero-Gonzalez, R.
name: Schmelcher, P.
name: Freilich, D. V.
name: Hall, D. S.
Publisher: name: arXiv
Year: 2011
Subjects: subject: Quantum Gases (cond-mat.quant-gas)
subject: Soft Condensed Matter (cond-mat.soft)
subject: Pattern Formation and Solitons (nlin.PS)
subject: FOS: Physical sciences

description: A quantized vortex dipole is the simplest vortex molecule, comprising two counter-circulating vortex lines in a superfluid. Although vortex dipoles are endemic in two-dimensional superfluids, the precise details of their dynamics have remained largely unexplored. We present here several striking observations of vortex dipoles in dilute-gas Bose-Einstein condensates, and develop a vortex-particle model that generates vortex line trajectories that are in good agreement with the experimental data. Interestingly, these diverse trajectories exhibit essentially identical quasi-periodic behavior, in which the vortex lines undergo stable epicyclic orbits.
description: 4 pages, 2 figures
Model Independent Signatures of New Physics in the Inflationary Power Spectrum
Creators: name: Jackson, Mark G.
name: Schalm, Koenraad
Publisher: name: arXiv
Year: 2010
Subjects: subject: High Energy Physics - Theory (hep-th)
subject: Cosmology and Nongalactic Astrophysics (astro-ph.CO)
subject: General Relativity and Quantum Cosmology (gr-qc)
subject: FOS: Physical sciences

description: We compute the universal generic corrections to the inflationary power spectrum due to unknown high-energy physics. We arrive at this result via a careful integrating out of massive fields in the "in-in" formalism yielding a consistent and predictive low-energy effective description in time-dependent backgrounds. We find that the power spectrum is universally modified at order H/M, where H is the scale of inflation. This is qualitatively different from the universal corrections in time-independent backgrounds, and it suggests that such effects may be present in upcoming cosmological observations.
description: 5 pages, 1 figure; corrected cutoff procedure
Chevalley restriction theorem for vector-valued functions on quantum groups
Creators: name: Balagovic, Martina
Publisher: name: arXiv
Year: 2010
Subjects: subject: Quantum Algebra (math.QA)
subject: Representation Theory (math.RT)
subject: FOS: Mathematics
subject: 17B37, 20G42

description: We generalize Chevalley's theorem about restriction of \mathfrak{g}-invariant polynomial functions \mathfrak{g}->C to W-invariant functions on the Cartan \mathfrak{h}->C. We consider the case when \mathfrak{g} is replaced by a quantum group and the target space of the polynomial maps is replaced by a finite dimensional representation V of this quantum group. We prove that the restriction map Res:(O_q(G)\otimes V)^{U_q(\mathfrak{g})}-> O(H)\otimes V is injective and describe the image.
How subtle design in video games impacts player experience : qualitative studies regarding two video game design features
Creators: name: Yin, Ji Tong
Publisher: name: University of British Columbia
Year: 2022

description: Video games have the ability to grant engaging, interactive experiences to its players, evoking a wide range of emotional responses; from joy to sorrow, from elation to thoughtfulness. This experiential affordance of video games, coupled with their meteoric rise in popularity, has made it increasingly important to understand the ways in which video games can shape player emotions and feelings. In this thesis, We consider how games affect player experience by investigating the effects of two prevalent design features, performing qualitative studies to understand their basis for inclusion and consequential effects. Ultimately, we highlight how such features can be used to mould the game towards specific experiences. First, we consider Random Reward Mechanisms (RRMs) - video game reward systems that provide rewards probabilistically upon trigger conditions, such as completing gameplay tasks or exceeding a playtime quota. We investigate the relationship between RRM implementations and user experience by performing a video observation of existing RRM systems and conducting interviews with players. Our methods reveal insights into how factors such as the affordances of non-optimal rewards and the trade-off between luck and skill impact player perception and interaction with RRMs. We additionally investigate the relationship between audiovisual design decisions and player expectations for reward presentations. Finally, we apply our findings to propose design methodologies for creating engaging RRM systems. Secondly, we consider the use of choice in narrative-rich video games. Such games often provide players with opportunities to make choices at key points, generating malleability within the game world and its characters. We explore the types of choices that exist, how choices affect player experience, and how players make decisions when presented with choice. We first conduct interviews with game developers and perform a video observation of existing choices to develop an initial classification system. We then perform a series of interviews with players to understand how different choices impact the overall experience. Our findings reveal that choices influence player experience at several levels of meta-gameplay, having impacts on the game itself, the player-game relationship, and the player outside the game. Finally, we discuss the potential of choice in developing impactful virtual experiences.
Event-by-event shape and flow fluctuations of relativistic heavy-ion collision fireballs
Creators: name: Qiu, Zhi
name: Heinz, Ulrich W.
Publisher: name: arXiv
Year: 2011
Subjects: subject: Nuclear Theory (nucl-th)
subject: High Energy Physics - Phenomenology (hep-ph)
subject: Nuclear Experiment (nucl-ex)
subject: FOS: Physical sciences

description: Heavy-ion collisions create deformed quark-gluon plasma (QGP) fireballs which explode anisotropically. The viscosity of the fireball matter determines its ability to convert the initial spatial deformation into momentum anisotropies that can be measured in the final hadron spectra. A quantitatively precise empirical extraction of the QGP viscosity thus requires a good understanding of the initial fireball deformation. This deformation fluctuates from event to event, and so does the finally observed momentum anisotropy. We present a harmonic decomposition of the initial fluctuations in shape and orientation of the fireball and perform event-by-event ideal fluid dynamical simulations to extract the resulting fluctuations in the magnitude and direction of the corresponding harmonic components of the final anisotropic flow at midrapidity. The final harmonic flow coefficients are found to depend non-linearly on the initial harmonic eccentricity coefficients. We show that, on average, initial density fluctuations suppress the buildup of elliptic flow relative to what one obtains from a smooth initial profile of the same eccentricity, and discuss implications for the phenomenological extraction of the QGP shear viscosity from experimental elliptic flow data.
description: 22 pages, 17 figures. Relative to [v2], minor changes in text. Fig. 9 redrawn. This version accepted by Phys. Rev. C
Additional file 1 of Heterologous expression of Phanerochaete chrysosporium cellobiose dehydrogenase in Trichoderma reesei
Creators: name: Wohlschlager, Lena
name: Csarman, Florian
name: Hucheng Chang
name: Fitz, Elisabeth
name: Seiboth, Bernhard
name: Ludwig, Roland
Publisher: name: figshare
Year: 2021
Subjects: subject: Biophysics
subject: Biochemistry
subject: Medicine
subject: Microbiology
subject: FOS: Biological sciences
subject: Genetics
subject: Biotechnology
subject: 39999 Chemical Sciences not elsewhere classified
subject: FOS: Chemical sciences
subject: 110309 Infectious Diseases
subject: FOS: Health sciences

description: Additional file 1: Vector map of plasmid pLH_hph_nat containing the gene sequence of PcCDH under control of the cDNA1 promoter, the hygromycin B and ampicillin resistance gene cassettes, ORI for replication in E. coli and a SbfI restriction site for linearization. Figure S2. PcCDH amino acid sequence (755 amino acids) with six potential N-glycosylation sites highlighted in blue (as predicted by http://www.cbs.dtu.dk/services/NetNGlyc ). Positions verified by mass spectrometry are underlined. Figure S3. Tryptic digest of PcCDHTr and PcCDH covering the N-glycosylation sequon at position N111. Figure S4. Tryptic digest of PcCDHTr and PcCDH covering the N-glycosylation sequon at position N419. Figure S5. Tryptic digest of PcCDHTr and PcCDH covering the N-glycosylation sequon at position N434. Figure S6. Tryptic digest of PcCDHTr and PcCDH covering the N-glycosylation sequon at position N553. Figure S7. Tryptic digest of PcCDHTr covering the N-glycosylation sequon at position N593 and N599.
LA ALTA CONFLICTIVIDAD COPARENTAL Y SU ABORDAJE DESDE LOS JUZGADOS DE FAMILIA CHILENOS
Creators: name: Henríquez, Sergio
Publisher: name: Zenodo
Year: 2023
Subjects: conflictividad coparental
corresponsabilidad parental
crianza
familia
coordinador parental

description: En esta ponencia se expone una breve presentación de la situación actual que presenta la alta conflictividad coparental en Chile, desde la perspectiva de los Tribunales de Familia, que se enfrentan a la necesidad de adoptar medidas que, la mayor parte de las veces, son ineficaces y sólo agravan y profundizan la vulneración de derechos de niños, niñas y adolescentes. Cruzada con una evidente discriminación de género que mantiene en las mujeres el rol de crianza, la necesidad de contar con herramientas innovadoras como el coordinador parental, se hace cada vez más urgente.
Additional file 1 of Association of inflammatory biomarkers with subsequent clinical course in suspected late onset sepsis in preterm neonates
Creators: name: Şerife Kurul
name: Sinno H. P. Simons
name: Ramakers, Christian R. B.
name: Rijke, Yolanda B. De
name: Kornelisse, René F.
name: Reiss, Irwin K. M.
name: H. Rob Taal
Publisher: name: figshare
Year: 2021
Subjects: subject: Medicine
subject: Cell Biology
subject: Biotechnology
subject: Immunology
subject: FOS: Clinical medicine
subject: 69999 Biological Sciences not elsewhere classified
subject: FOS: Biological sciences
subject: Science Policy
subject: 110309 Infectious Diseases
subject: FOS: Health sciences

description: Additional file 1. Figure: Biomarker levels at moment of suspicion. Description of data: Log(10) transformed plasma concentrations of IL-6 (pg/mL), PCT (ng/mL) and CRP (mg/L) at the time of sepsis evaluation across patients with figure A) sepsis (only culture positive sepsis, excluding patients with culture negative sepsis) and without sepsis; figure B) sepsis (both culture negative and culture positive sepsis) and without sepsis. Data are Log(10) transformed for visualization purposes.
Snyder-de Sitter model from two-time physics
Creators: name: Carrisi, M. C.
name: Mignemi, S.
Publisher: name: arXiv
Year: 2010
Subjects: subject: General Relativity and Quantum Cosmology (gr-qc)
subject: FOS: Physical sciences

description: We show that the symplectic structure of the Snyder model on a de Sitter background can be derived from two-time physics in seven dimensions and propose a Hamiltonian for a free particle consistent with the symmetries of the model.
description: 9 pages
Spectral clustering and the high-dimensional stochastic blockmodel
Creators: name: Rohe, Karl
name: Chatterjee, Sourav
name: Yu, Bin
Publisher: name: arXiv
Year: 2010
Subjects: subject: Machine Learning (stat.ML)
subject: Statistics Theory (math.ST)
subject: FOS: Computer and information sciences
subject: FOS: Mathematics

description: Networks or graphs can easily represent a diverse set of data sources that are characterized by interacting units or actors. Social networks, representing people who communicate with each other, are one example. Communities or clusters of highly connected actors form an essential feature in the structure of several empirical networks. Spectral clustering is a popular and computationally feasible method to discover these communities. The stochastic blockmodel [Social Networks 5 (1983) 109--137] is a social network model with well-defined communities; each node is a member of one community. For a network generated from the Stochastic Blockmodel, we bound the number of nodes "misclustered" by spectral clustering. The asymptotic results in this paper are the first clustering results that allow the number of clusters in the model to grow with the number of nodes, hence the name high-dimensional. In order to study spectral clustering under the stochastic blockmodel, we first show that under the more general latent space model, the eigenvectors of the normalized graph Laplacian asymptotically converge to the eigenvectors of a "population" normalized graph Laplacian. Aside from the implication for spectral clustering, this provides insight into a graph visualization technique. Our method of studying the eigenvectors of random matrices is original.
description: Published in at http://dx.doi.org/10.1214/11-AOS887 the Annals of Statistics (http://www.imstat.org/aos/) by the Institute of Mathematical Statistics (http://www.imstat.org)