cometadata/datacite-rtg-text-other-reclassification-records huggingface dataset:
Global solvability and convergence of the Euler-Poincaré regularization of the two-dimensional Euler equations
Creators: name: Gotoda, Takeshi
Publisher: name: arXiv
Year: 2017
Subjects: subject: Analysis of PDEs (math.AP)
subject: FOS: Mathematics

description: We study the Euler-Poincaré equations that are the regularized Euler equations derived from the Euler-Poincaré framework. It is noteworthy to remark that the Euler-Poincaré equations are a generalization of two well-known regularizations, the vortex blob method and the Euler-$α$ equations. We show the global existence of a unique weak solution for the two-dimensional (2D) Euler-Poincaré equations with the initial vorticity in the space of Radon measure. This is a remarkable feature of these equations since the existence of weak solutions with the Radon measure initial vorticity has not been established in general for the 2D Euler equations. We also show that weak solutions of the 2D Euler-Poincaré equations converge to those of the 2D Euler equations in the limit of the regularization parameter when the initial vorticity belongs to the space of integrable and bounded functions.
description: 23 pages, no figures
The Impact of Complex Trauma on Daily Functioning and Occupation in Childhood: A Scoping Review Protocol
Creators: name: Walsh-Garcia, Síomha
name: Cremin, Katie
name: Spirtos, Michelle
name: Mockler, David
Publisher: name: Open Science Framework
Year: 2022
Subjects: subject: Psychiatry and Psychology
subject: Other Medicine and Health Sciences
subject: Medicine and Health Sciences
subject: Rehabilitation and Therapy
subject: Mental and Social Health
subject: activities of daily living
subject: children and youth
subject: complex trauma
subject: occupational therapy

description: Objective: To understand the extent and type of empirical evidence available relating to the impact of complex trauma on daily functioning and occupations in childhood. Introduction: Extensive investigation has explored the negative effects that exposure to complex trauma has on various components of health and development in childhood. However, research considering the impact of complex trauma on daily functioning and occupation in the lives of children and youth has been treated in limited detail. Inclusion Criteria: The review will include empirical studies involving children and youth who have been exposed to prolonged or repeated experiences of interpersonal trauma within a caregiver relationship. The study must include a report of the impact of complex trauma on an aspect of daily functioning or occupation in a child’s life. Methods: The JBI methodology for scoping reviews will be used to conduct this review, accompanied by the Preferred Reporting Items for Systematic Reviews and Meta-Analyses extension for Scoping Reviews. A systematic search strategy will be run through the EMBASE, MEDLINE, CINAHL, PsychINFO, and Web of Science databases. A hand search will be conducted to ensure sources which fall outside these databases are included. The title and abstract will be screened by two independent reviewers. The full texts of potentially relevant sources will be screened by two independent reviewers with a third acting as adjudicator to resolve discrepancies. The data extracted will be synthesized using thematic analysis, presented in tabular form, and accompanied by a narrative summary describing its relationship to the review question.
The Model Counting Competition 2020
Creators: name: Fichte, Johannes K.
name: Hecher, Markus
name: Hamiti, Florim
Publisher: name: arXiv
Year: 2020
Subjects: subject: Logic in Computer Science (cs.LO)
subject: Artificial Intelligence (cs.AI)
subject: Data Structures and Algorithms (cs.DS)
subject: FOS: Computer and information sciences

description: Many computational problems in modern society account to probabilistic reasoning, statistics, and combinatorics. A variety of these real-world questions can be solved by representing the question in (Boolean) formulas and associating the number of models of the formula directly with the answer to the question. Since there has been an increasing interest in practical problem solving for model counting over the last years, the Model Counting (MC) Competition was conceived in fall 2019. The competition aims to foster applications, identify new challenging benchmarks, and to promote new solvers and improve established solvers for the model counting problem and versions thereof. We hope that the results can be a good indicator of the current feasibility of model counting and spark many new applications. In this paper, we report on details of the Model Counting Competition 2020, about carrying out the competition, and the results. The competition encompassed three versions of the model counting problem, which we evaluated in separate tracks. The first track featured the model counting problem (MC), which asks for the number of models of a given Boolean formula. On the second track, we challenged developers to submit programs that solve the weighted model counting problem (WMC). The last track was dedicated to projected model counting (PMC). In total, we received a surprising number of 9 solvers in 34 versions from 8 groups.
THE VALUE OF COOPERATIVE EDUCATION FOR MIXED-AGE GROUPS
Creators: name: Sadullayeva, Manzuna
Publisher: name: Zenodo
Year: 2024

description: This article  explores the value of cooperative education within mixed-age groups, emphasizing its impact on academic performance, social and emotional development, and preparation for a diverse society. It delves into the principles of cooperative learning, benefits of mixed-age grouping, and strategies for successful implementation. The essay also addresses challenges and provides insights into curriculum design, assessment methods, and overcoming potential stereotypes. The goal is to provide a comprehensive understanding of the significance of cooperative education in mixed-age settings.
Trajectory optimization for contact-rich motions using implicit differential dynamic programming
Creators: name: Chatzinikolaidis, Iordanis
name: Li, Zhibin
Publisher: name: arXiv
Year: 2021
Subjects: subject: Robotics (cs.RO)
subject: Systems and Control (eess.SY)
subject: FOS: Computer and information sciences
subject: FOS: Electrical engineering, electronic engineering, information engineering

description: This paper presents a novel approach using sensitivity analysis for generalizing Differential Dynamic Programming (DDP) to systems characterized by implicit dynamics, such as those modelled via inverse dynamics and variational or implicit integrators. It leads to a more general formulation of DDP, enabling for example the use of the faster recursive Newton-Euler inverse dynamics. We leverage the implicit formulation for precise and exact contact modelling in DDP, where we focus on two contributions: (1) Contact dynamics in acceleration level that enables high-order integration schemes; (2) Formulation using an invertible contact model in the forward pass and a closed form solution in the backward pass to improve the numerical resolution of contacts. The performance of the proposed framework is validated (1) by comparing implicit versus explicit DDP for the swing-up of a double pendulum, and (2) by planning motions for two tasks using a single leg model making multi-body contacts with the environment: standing up from ground, where a priori contact enumeration is challenging, and maintaining balance under an external perturbation.
description: 9 pages, 6 figures, 1 table, submitted to IEEE Robotics and Automation Letters; under review
title: Анализ течения и исходов беременностей при подсчете шевелений плода
title: Analyzing Course of Pregnancy and Labor Outcomes in Fetal Movements Counting
Creators: name: Белоцерковцева, Лариса Дмитриевна
name: Мурзаева, Айгуль Зайнутдиновна
name: Илькова, Татьяна Дмитриевна
name: Иванова, Полина Александровна
Publisher: name: Издательский центр СурГУ
Year: 2022

description: Цель – оценить по данным литературы роль подсчета шевелений плода как способа определения показаний для родоразрешения. Материалы и методы. Поиск научной литературы проведен в базах данных Web of Science, Medline, PubMed и РИНЦ. Результаты. Установлено, что подсчет шевелений плода, несмотря
на то, что он является косвенным методом оценки состояния плода, улучшает перинатальный исход и снижает
процент мертворождений.
description: The study aims to evaluate the diagnostic value of fetal movements counting for labor outcomes
based on the literature review. Materials and methods. The scientific literature was searched in the Web of Science,
Medline, PubMed, and RSCI databases. Results. Despite being an indirect diagnostic method, fetal movement
counting improves pregnancy outcomes and lowers the stillbirth rate.
Packing dimension and Ahlfors regularity of porous sets in metric spaces
Creators: name: Järvenpää, Esa
name: Järvenpää, Maarit
name: Käenmäki, Antti
name: Rajala, Tapio
name: Rogovin, Sari
name: Suomala, Ville
Publisher: name: arXiv
Year: 2017
Subjects: subject: Classical Analysis and ODEs (math.CA)
subject: FOS: Mathematics

description: Let $X$ be a metric measure space with an $s$-regular measure $μ$. We prove that if $A\subset X$ is $\varrho$-porous, then $\dim_{\mathrm{p}}(A)\le s-c\varrho^s$ where $\dim_{\mathrm{p}}$ is the packing dimension and $c$ is a positive constant which depends on $s$ and the structure constants of $μ$. This is an analogue of a well known asymptotically sharp result in Euclidean spaces. We illustrate by an example that the corresponding result is not valid if $μ$ is a doubling measure. However, in the doubling case we find a fixed $N\subset X$ with $μ(N)=0$ such that $\dim_{\mathrm{p}}(A)\le\dim_{\mathrm{p}}(X)-c(\log\tfrac 1\varrho)^{-1}\varrho^t$ for all $\varrho$-porous sets $A\subset X\setminus N$. Here $c$ and $t$ are constants which depend on the structure constant of $μ$. Finally, we characterize uniformly porous sets in complete $s$-regular metric spaces in terms of regular sets by verifying that $A$ is uniformly porous if and only if there is $t
Spatio-temporal correlations in 3D homogeneous isotropic turbulence
Creators: name: Gorbunova, Anastasiia
name: Balarac, Guillaume
name: Canet, Léonie
name: Eyink, Gregory
name: Rossetto, Vincent
Publisher: name: arXiv
Year: 2021
Subjects: subject: Fluid Dynamics (physics.flu-dyn)
subject: Statistical Mechanics (cond-mat.stat-mech)
subject: FOS: Physical sciences

description: We use Direct Numerical Simulations (DNS) of the forced Navier-Stokes equation for a 3-dimensional incompressible fluid in order to test recent theoretical predictions. We study the two- and three-point spatio-temporal correlation functions of the velocity field in stationary, isotropic and homogeneous turbulence. We compare our numerical results to the predictions from the Functional Renormalization Group (FRG) which were obtained in the large wavenumber limit. DNS are performed at various Reynolds numbers and the correlations are analyzed in different time regimes focusing on the large wavenumbers. At small time delays, we find that the two-point correlation function decays as a Gaussian in the variable $kt$ where $k$ is the wavenumber and $t$ the time delay. The three-point correlation function, determined from the time-dependent advection-velocity correlations, also follows a Gaussian decay at small $t$ with the same prefactor as the one of the two-point function. These behaviors are in precise agreement with the FRG results, and can be simply understood as a consequence of sweeping. At large time delays, the FRG predicts a crossover to an exponential in $k^2 t$, which we were not able to resolve in our simulations. However, we analyze the two-point spatio-temporal correlations of the modulus of the velocity, and show that they exhibit this crossover from a Gaussian to an exponential decay, although we lack of a theoretical understanding in this case. This intriguing phenomenon calls for further theoretical investigation.
description: 13 pages, 12 figures
War Diary of 1st Battalion Canadian Scottish Regiment, Vol. 15, November 1, 1940 to November 30, 1940
Creators: name: Canada. Canadian Army. Canadian Scottish Regiment (Princess Mary's)
Publisher: name: University of Victoria Libraries
Year: 2020
Subjects: subject: Canada. Canadian Army
valueUri: http://id.worldcat.org/fast/531187
subject: Canada. Canadian Army. Canadian Scottish Regiment (Princess Mary's)
subject: World War (1939-1945)
valueUri: http://id.worldcat.org/fast/1180924
subject: War diaries
valueUri: http://id.worldcat.org/fast/1745536

description: The war diaries are official records kept by the Battalions during a one month period. They contain the daily orders, correspondence, newsletters, and an intelligence log detailing troop activities, locations, and weather conditions. The war diaries detail the activities and movement of the 1st Battalion from training in Canada and England to active duty on the Western Front and their return to Victoria in January 1946. This diary was kept while Debert Military Camp, Nova Scotia. It has entries about cold weather conditions, training, a vehicle inventory, a case of measles leading to a quarantine of the whole battalion, Remembrance Day service, various entertainments like movies, glee club performances, and sports, among other activities and information.
Strong Haken via Sphere Complexes
Creators: name: Hensel, Sebastian
name: Schultens, Jennifer
Publisher: name: arXiv
Year: 2021
Subjects: subject: Geometric Topology (math.GT)
subject: FOS: Mathematics

description: We give a short proof of Scharlemann's Strong Haken Theorem for closed $3$-manifolds (and manifolds with spherical boundary). As an application, we also show that given a decomposing sphere $R$ for a $3$-manifold $M$ that splits off an $S^2 \times S^1$ summand, any Heegaard splitting of $M$ restricts to the standard Heegaard splitting on the summand.
description: 13 pages, 4 figures
Spatio-temporal correlation functions in scalar turbulence from functional renormalization group
Creators: name: Pagani, Carlo
name: Canet, Léonie
Publisher: name: arXiv
Year: 2021
Subjects: subject: Fluid Dynamics (physics.flu-dyn)
subject: Statistical Mechanics (cond-mat.stat-mech)
subject: FOS: Physical sciences

description: We provide the leading behavior at large wavenumbers of the two-point correlation function of a scalar field passively advected by a turbulent flow. We first consider the Kraichnan model, in which the turbulent carrier flow is modeled by a stochastic vector field with a Gaussian distribution, and then a scalar advected by a homogeneous and isotropic turbulent flow described by the Navier-Stokes equation, under the assumption that the scalar is passive, i.e. that it does not affect the carrier flow. We show that at large wavenumbers, the two-point correlation function of the scalar in the Kraichnan model decays as an exponential in the time delay, in both the inertial and dissipation ranges. We establish the expression, both from a perturbative and from a nonperturbative calculation, of the prefactor, which is found to be always proportional to $k^2$. For a real scalar, the decay is Gaussian in $t$ at small time delays, and it crosses over to an exponential only at large $t$. The assumption of delta-correlation in time of the stochastic velocity field in the Kraichnan model hence significantly alters the statistical temporal behavior of the scalar at small times.
description: 17 pages
Stall force of a cargo driven by N interacting motor proteins
Creators: name: Bhat, Deepak
name: Gopalakrishnan, Manoj
Publisher: name: arXiv
Year: 2017
Subjects: subject: Biological Physics (physics.bio-ph)
subject: Soft Condensed Matter (cond-mat.soft)
subject: Statistical Mechanics (cond-mat.stat-mech)
subject: Quantitative Methods (q-bio.QM)
subject: Subcellular Processes (q-bio.SC)
subject: FOS: Physical sciences
subject: FOS: Biological sciences

description: We study a generic one-dimensional model for an intracellular cargo driven by N motor proteins against an external applied force. The model includes motor-cargo and motor-motor interactions. The cargo motion is described by an over-damped Langevin equation, while motor dynamics is specified by hopping rates which follow a local detailed balance condition with respect to change in energy per hopping event. Based on this model, we show that the stall force, the mean external force corresponding to zero mean cargo velocity, is completely independent of the details of the interactions and is, therefore, always equal to the sum of the stall forces of the individual motors. This exact result is arrived on the basis of a simple assumption: the (macroscopic) state of stall of the cargo is analogous to a state of thermodynamic equilibrium, and is characterized by vanishing net probability current between any two microstates, with the latter specified by motor positions relative to the cargo. The corresponding probability distribution of the microstates under stall is also determined. These predictions are in complete agreement with numerical simulations, carried out using specific forms of interaction potentials.
description: Accepted in Europhysics Letters
AXBOROT KOMMUNIKATSIYA TEXNOLOGIYALARI SOHASIDA SODIR ETILAYOTGAN JINOYATLARGA QARSHI KURASH: MUAMMOLAR VA YECHIMLAR
Creators: name: Umirzoqov, Begzod
name: Raxmonov, Shaxobiddin
Publisher: name: Zenodo
Year: 2024

description: Maqolada axborot xuruji, axborot xavfsizligi, kibermakon, kiberjinoyat tushunchalari, uning mohiyati,unga qarshi kurash, muammolar, yechimlar haqida so`z boradi.
A novel procedure for constructing invariant subspaces of a set of matrices
Creators: name: Al-Dweik, Ahmad Y.
name: Ghanam, Ryad
name: Thompson, Gerard
name: Azad, Hassan
Publisher: name: arXiv
Year: 2021
Subjects: subject: General Mathematics (math.GM)
subject: FOS: Mathematics

description: A problem that is frequently encountered in a variety of mathematical contexts, is to find the common invariant subspaces of a single, or set of matrices. A new method is proposed that gives a definitive answer to this problem. The key idea consists of finding common eigenvectors for exterior powers of the matrices concerned. A convenient formulation of the Plücker relations is then used to ensure that these eigenvectors actually correspond to subspaces or provide the initial constraints for eigenvectors involving parameters. A procedure for computing the divisors of totally decomposable vector is also provided. Several examples are given for which the calculations are too tedious to do by hand and are performed by coding the conditions found into Maple.
Renormalization in Lorenz maps -- completely invariant sets and periodic orbits
Creators: name: Cholewa, Łukasz
name: Oprocha, Piotr
Publisher: name: arXiv
Year: 2021
Subjects: subject: Dynamical Systems (math.DS)
subject: FOS: Mathematics
subject: 37E05, 37B05, 37E20

description: The paper deals with dynamics of expanding Lorenz maps, which appear in a natural way as Poincarè maps in geometric models of well-known Lorenz attractor. Using both analytical and symbolic approaches, we study connections between periodic points, completely invariant sets and renormalizations. We show that some renormalizations may be connected with completely invariant sets while some others don't. We provide an algorithm to detect the renormalizations that can be recovered from completely invariant sets. Furthermore, we discuss the importance of distinguish one-side and double-side preimage. This way we provide a better insight into the structure of renormalizations in Lorenz maps. These relations remained unnoticed in the literature, therefore we are correcting some gaps existing in the literature, improving and completing to some extent the description of possible dynamics in this important field of study.
description: 34 pages, 4 figures
Loss of energy concentration in nonlinear evolution beam equations
Creators: name: Garrione, Maurizio
name: Gazzola, Filippo
Publisher: name: arXiv
Year: 2017
Subjects: subject: Analysis of PDEs (math.AP)
subject: FOS: Mathematics
subject: 35C10, 35G31, 34D20, 74K10

description: Motivated by the oscillations that were seen at the Tacoma Narrows Bridge, we introduce the notion of solutions with a prevailing mode for the nonlinear evolution beam equation $$ u_{tt} + u_{xxxx} + f(u)= g(x, t) $$ in bounded space-time intervals. We give a new definition of instability for these particular solutions, based on the loss of energy concentration on their prevailing mode. We distinguish between two different forms of energy transfer, one physiological (unavoidable and depending on the nonlinearity) and one due to the insurgence of instability. We then prove a theoretical result allowing to reduce the study of this kind of infinite-dimensional stability to that of a finite-dimensional approximation. With this background, we study the occurrence of instability for three different kinds of nonlinearities $f$ and for some forcing terms $g$, highlighting some of their structural properties and performing some numerical simulations.
War Diary of 1st Battalion Canadian Scottish Regiment, Vol. 18, February 1, 1941 to February 28, 1941
Creators: name: Canada. Canadian Army. Canadian Scottish Regiment (Princess Mary's)
Publisher: name: University of Victoria Libraries
Year: 2020
Subjects: subject: Canada. Canadian Army
valueUri: http://id.worldcat.org/fast/531187
subject: Canada. Canadian Army. Canadian Scottish Regiment (Princess Mary's)
subject: World War (1939-1945)
valueUri: http://id.worldcat.org/fast/1180924
subject: War diaries
valueUri: http://id.worldcat.org/fast/1745536

description: The war diaries are official records kept by the Battalions during a one month period. They contain the daily orders, correspondence, newsletters, and an intelligence log detailing troop activities, locations, and weather conditions. The war diaries detail the activities and movement of the 1st Battalion from training in Canada and England to active duty on the Western Front and their return to Victoria in January 1946. This diary was kept while at Debert Military Camp, Nova Scotia. It has entries about training, hockey, skating, skiing, issues stemming from a blizzard, cases of scarlet fever, a weekly Barrack Room competition for the Parker Cup, and men going on furlough, among other activities and information.
Non-Markovianity and coherence of a moving qubit inside a leaky cavity
Creators: name: Mortezapour, Ali
name: Borji, Mahdi Ahmadi
name: Park, DaeKil
name: Franco, Rosario Lo
Publisher: name: arXiv
Year: 2017
Subjects: subject: Quantum Physics (quant-ph)
subject: FOS: Physical sciences

description: Non-Markovian features of a system evolution, stemming from memory effects, may be utilized to transfer, storage, and revive basic quantum properties of the system states. It is well known that an atom qubit undergoes non-Markovian dynamics in high quality cavities. We here consider the qubit-cavity interaction in the case when the qubit is in motion inside a leaky cavity. We show that, owing to the inhibition of the decay rate, the coherence of the traveling qubit remains closer to its initial value as time goes by compared to that of a qubit at rest. We also demonstrate that quantum coherence is preserved more efficiently for larger qubit velocities. This is true independently of the evolution being Markovian or non-Markovian, albeit the latter condition is more effective at a given value of velocity. We however find that the degree of non-Markovianity is eventually weakened as the qubit velocity increases, despite a better coherence maintenance.
description: 16 pages and 5 figures. Written for the upcoming special volume "40 years of the GKLS equation", to be published in the journal Open Systems and Information Dynamics. A co-author and some references added
Well posedness of an angiogenesis related integrodifferential diffusion model
Creators: name: Carpio, Ana
name: Duro, Gema
Publisher: name: arXiv
Year: 2016
Subjects: subject: Analysis of PDEs (math.AP)
subject: FOS: Mathematics

description: We prove existence and uniqueness of nonnegative solutions for a nonlocal in time integrodifferential diffusion system related to angiogenesis descriptions. Fundamental solutions of appropriately chosen parabolic operators with bounded coefficients allow us to generate sequences of approximate solutions. Comparison principles and integral equations provide uniform bounds ensuring some convergence properties for iterative schemes and providing stability bounds. Uniqueness follows from chained integral inequalities.
A Disaggregated View of Market Concentration in the Food Retail Industry
Creators: name: Zeballos, Eliana
name: Dong, Xiao
name: Islamaj, Ergys
name: Zeballos, Eliana
name: Dong, Xiao
name: Islamaj, Ergys
Publisher: name: Unknown
Year: 2023
Subjects: subject: Consumer/Household Economics
subject: Demand and Price Analysis
subject: Financial Economics
subject: Marketing
subject: FOS: Economics and business
subject: Public Economics
subject: food retail industry
subject: grocery stores
subject: warehouse clubs
subject: superstores
subject: supercenters
subject: Herfindahl-Hirschman Index
subject: HHI
subject: National Establishment Time Series
subject: NETS
subject: market concentration

description: The U.S. food retail sector has experienced substantial change in market concentration over the last three decades. To understand how the change in concentration might impact consumers, researchers would ideally focus on geographic markets that mimic where consumers actually shop. This report investigates the changes in food retailing market concentration at the national, State, Metropolitan Statistical Area (MSA), and county levels in the United States from 1990 to 2019, using data from the National Establishment Time Series dataset. The research finds that food-retailing market concentration at the county level is much higher than estimates of concentration using national-level data. Food retailing markets in rural and small nonmetro counties are considerably more concentrated than food retailing markets in metro and large nonmetro counties. Further, the study documents a significant rise in food retailing market concentration in the United States over the last three decades, at the national level as well as the State, MSA, and county levels during the period. Finally, the study shows that when excluding the largest food retailer, the concentration in retailing at the national and State level, markets would have been lower, but at the MSA and county level, markets would have been higher for most of the period analyzed.
Determining the Intrinsic CME Flux Rope Type Using Remote-sensing Solar Disk Observations
Creators: name: Palmerio, Erika
name: Kilpua, Emilia K. J.
name: James, Alexander W.
name: Green, Lucie M.
name: Pomoell, Jens
name: Isavnin, Alexey
name: Valori, Gherardo
Publisher: name: arXiv
Year: 2017
Subjects: subject: Solar and Stellar Astrophysics (astro-ph.SR)
subject: FOS: Physical sciences

description: A key aim in space weather research is to be able to use remote-sensing observations of the solar atmosphere to extend the lead time of predicting the geoeffectiveness of a coronal mass ejection (CME). In order to achieve this, the magnetic structure of the CME as it leaves the Sun must be known. In this article we address this issue by developing a method to determine the intrinsic flux rope type of a CME solely from solar disk observations. We use several well known proxies for the magnetic helicity sign, the axis orientation, and the axial magnetic field direction to predict the magnetic structure of the interplanetary flux rope. We present two case studies: the 2 June 2011 and the 14 June 2012 CMEs. Both of these events erupted from an active region and, despite having clear in situ counterparts, their eruption characteristics were relatively complex. The first event was associated with an active region filament that erupted in two stages, while for the other event the eruption originated from a relatively high coronal altitude and the source region did not feature the presence of a filament. Our magnetic helicity sign proxies include the analysis of magnetic tongues, soft X-ray and/or EUV sigmoids, coronal arcade skew, filament emission and absorption threads, and filament rotation. Since the inclination of the post-eruption arcades was not clear, we use the tilt of the polarity inversion line to determine the flux rope axis orientation, and coronal dimmings to determine the flux rope footpoints and, therefore, the direction of the axial magnetic field. The comparison of the estimated intrinsic flux rope structure to in situ observations at the Lagrangian point L1 indicated a good agreement with the predictions. Our results highlight the flux rope type determination techniques that are particularly useful for active region eruptions, where most geoeffective CMEs originate.
description: 24 pages, 7 figures, accepted for publication in Solar Physics
Lower Bounds from Fitness Levels Made Easy
Creators: name: Doerr, Benjamin
name: Kötzing, Timo
Publisher: name: arXiv
Year: 2021
Subjects: subject: Neural and Evolutionary Computing (cs.NE)
subject: Artificial Intelligence (cs.AI)
subject: FOS: Computer and information sciences

description: One of the first and easy to use techniques for proving run time bounds for evolutionary algorithms is the so-called method of fitness levels by Wegener. It uses a partition of the search space into a sequence of levels which are traversed by the algorithm in increasing order, possibly skipping levels. An easy, but often strong upper bound for the run time can then be derived by adding the reciprocals of the probabilities to leave the levels (or upper bounds for these). Unfortunately, a similarly effective method for proving lower bounds has not yet been established. The strongest such method, proposed by Sudholt (2013), requires a careful choice of the viscosity parameters $γ_{i,j}$, $0 \le i < j \le n$.
 In this paper we present two new variants of the method, one for upper and one for lower bounds. Besides the level leaving probabilities, they only rely on the probabilities that levels are visited at all. We show that these can be computed or estimated without greater difficulties and apply our method to reprove the following known results in an easy and natural way. (i) The precise run time of the (1+1) EA on \textsc{LeadingOnes}. (ii) A lower bound for the run time of the (1+1) EA on \textsc{OneMax}, tight apart from an $O(n)$ term. (iii) A lower bound for the run time of the (1+1) EA on long $k$-paths. We also prove a tighter lower bound for the run time of the (1+1) EA on jump functions by showing that, regardless of the jump size, only with probability $O(2^{-n})$ the algorithm can avoid to jump over the valley of low fitness.
description: Extended version of a paper appearing in the proceedings of GECCO 2021
War Diary of 1st Battalion Canadian Scottish Regiment, Vol. 17, January 1, 1941 to January 31, 1941
Creators: name: Canada. Canadian Army. Canadian Scottish Regiment (Princess Mary's)
Publisher: name: University of Victoria Libraries
Year: 2020
Subjects: subject: Canada. Canadian Army
valueUri: http://id.worldcat.org/fast/531187
subject: Canada. Canadian Army. Canadian Scottish Regiment (Princess Mary's)
subject: World War (1939-1945)
valueUri: http://id.worldcat.org/fast/1180924
subject: War diaries
valueUri: http://id.worldcat.org/fast/1745536

description: The war diaries are official records kept by the Battalions during a one month period. They contain the daily orders, correspondence, newsletters, and an intelligence log detailing troop activities, locations, and weather conditions. The war diaries detail the activities and movement of the 1st Battalion from training in Canada and England to active duty on the Western Front and their return to Victoria in January 1946. This diary was kept while at Debert Military Camp, Nova Scotia. It has entries about the troops returning from furlough, cold weather conditions, training, skating and playing hockey, their mascot K-9 Private Wallace a St. Bernard dog becoming the proud father of 10 pups with his "wife" a collie, a report of a civilian home near the camp being burned to the ground, concerts, a ping-pong tournament, a ski school, a case of scarlet fever, and traffic problems, among other activities and information.
Binary sampling ghost imaging: add random noise to fight quantization caused image quality decline
Creators: name: Li, Junhui
name: Yang, Dongyue
name: Luo, Bin
name: Wu, Guohua
name: Yin, Longfei
name: Guo, Hong
Publisher: name: arXiv
Year: 2017
Subjects: subject: Optics (physics.optics)
subject: FOS: Physical sciences

description: When the sampling data of ghost imaging is recorded with less bits, i.e., experiencing quantization, decline of image quality is observed. The less bits used, the worse image one gets. Dithering, which adds suitable random noise to the raw data before quantization, is proved to be capable of compensating image quality decline effectively, even for the extreme binary sampling case. A brief explanation and parameter optimization of dithering are given.
description: 8 pages, 7 figures
Algorithms for Simultaneous Block Triangularization and Block Diagonalization of Sets of Matrices
Creators: name: Al-Dweik, Ahmad Y.
name: Ghanam, Ryad
name: Thompson, Gerard
name: Mustafa, M. T.
Publisher: name: arXiv
Year: 2021
Subjects: subject: General Mathematics (math.GM)
subject: FOS: Mathematics

description: In a recent paper, a new method was proposed to find the common invariant subspaces of a set of matrices. This paper invstigates the more general problem of putting a set of matrices into block triangular or block-diagonal form simultaneously. Based on common invariant subspaces, two algorithms for simultaneous block triangularization and block diagonalization of sets of matrices are presented. As an alternate approach for simultaneous block diagonalization of sets of matrices by an invertible matrix, a new algorithm is developed based on the generalized eigen vectors of a commuting matrix. Moreover, a new characterization for the simultaneous block diagonalization by an invertible matrix is provided. The algorithms are applied to concrete examples using the symbolic manipulation system Maple.
High-energy exciton transitions in quasi-two-dimensional cadmium chalcogenide nanoplatelets
Creators: name: Vasiliev, Roman B.
name: Lebedev, Alexander I.
name: Lazareva, Elizabeth P.
name: Shlenskaya, Natalia N.
name: Zaytsev, Vladimir B.
name: Vitukhnovsky, Alexei G.
name: Yao, Yuanzhao
name: Sakoda, Kazuaki
Publisher: name: arXiv
Year: 2017
Subjects: subject: Materials Science (cond-mat.mtrl-sci)
subject: Mesoscale and Nanoscale Physics (cond-mat.mes-hall)
subject: FOS: Physical sciences

description: Semiconductor nanoparticles of cadmium chalcogenides are known to exhibit pronounced thickness-dependent $E_0$ series of exciton transitions at the $Γ$ point of the Brillouin zone (BZ). In this work, we report an experimental evidence for high-energy series of exciton transitions, which originates from BZ points different from the $Γ$ point, in the family of cadmium chalcogenide quasi-2D nanoplatelets (NPLs). Intensive UV absorption bands demonstrating a pronounced size effect are observed for CdTe, CdSe, and CdS NPLs in addition to the $E_0$ exciton bands in the visible region. These new bands are attributed to transitions analogous to the $E_1$, $E_1+Δ_1$, and $E_2$ series observed in bulk crystals. First-principles DFT calculations of the electronic structure and absorption spectra support this explanation and show that the main contribution to these optical transitions comes from $X$ and $M$ points of the 2D BZ, which originate from $L$ and $X$ points of the 3D BZ. At the same time, the $E_0$ series of transitions at the $Γ$ point is well described by the multiband effective-mass model. The observation of the UV exciton bands reveals tunable optical properties of cadmium chalcogenide NPLs in UV spectral region, which may be interesting for practical applications.
description: 8 pages, 4 figures, 1 table; to appear in Phys. Rev. B
Eulerian spatio-temporal correlations in passive scalar turbulence
Creators: name: Gorbunova, Anastasiia
name: Pagani, Carlo
name: Balarac, Guilaume
name: Canet, Léonie
name: Rossetto, Vincent
Publisher: name: arXiv
Year: 2021
Subjects: subject: Fluid Dynamics (physics.flu-dyn)
subject: Statistical Mechanics (cond-mat.stat-mech)
subject: FOS: Physical sciences

description: We study the spatio-temporal two-point correlation function of passively advected scalar fields in the inertial-convective range in three dimensions by means of numerical simulations. We show that at small time delays $t$ the correlations decay as a Gaussian in the variable $tp$ where $p$ is the wavenumber. At large time delays, a crossover to an exponential decay in $tp^2$ is expected from a recent functional renormalization group (FRG) analysis. We study this regime for a scalar field advected by a Kraichnan's ``synthetic'' velocity field, and accurately confirm the FRG result, including the form of the prefactor in the exponential. By introducing finite time correlations in the synthetic velocity field, we uncover the crossover between the two regimes.
description: 10 pages, 10 figures
War Diary of 1st Battalion Canadian Scottish Regiment, Vol. 19, March 1, 1941 to March 31, 1941
Creators: name: Canada. Canadian Army. Canadian Scottish Regiment (Princess Mary's)
Publisher: name: University of Victoria Libraries
Year: 2020
Subjects: subject: Canada. Canadian Army
valueUri: http://id.worldcat.org/fast/531187
subject: Canada. Canadian Army. Canadian Scottish Regiment (Princess Mary's)
subject: World War (1939-1945)
valueUri: http://id.worldcat.org/fast/1180924
subject: War diaries
valueUri: http://id.worldcat.org/fast/1745536

description: The war diaries are official records kept by the Battalions during a one month period. They contain the daily orders, correspondence, newsletters, and an intelligence log detailing troop activities, locations, and weather conditions. The war diaries detail the activities and movement of the 1st Battalion from training in Canada and England to active duty on the Western Front and their return to Victoria in January 1946. This diary was kept while at Debert Military Camp, Nova Scotia. It has entries about training, skiing, men going and coming back on furloughs, continuing with the weekly best barrack room competition for the Parker Cup, the Regimental School, a boxing tournament, and quarantining a man with a suspected case of spinal meningitis, among other activities and information.
Delayed feedback control of self-mobile cavity solitons in a wide-aperture laser with a saturable absorber
Creators: name: Schemmelmann, Tobias
name: Tabbert, Felix
name: Pimenov, Alexander
name: Vladimirov, Andrei G.
name: Gurevich, Svetlana V.
Publisher: name: arXiv
Year: 2017
Subjects: subject: Pattern Formation and Solitons (nlin.PS)
subject: FOS: Physical sciences

description: We investigate the spatiotemporal dynamics of cavity solitons in a broad area vertical-cavity surface-emitting laser with saturable absorption subjected to time-delayed optical feedback. Using a combination of analytical, numerical and path continuation methods we analyze the bifurcation structure of stationary and moving cavity solitons and identify two different types of traveling localized solutions, corresponding to slow and fast motion. We show that the delay impacts both stationary and moving solutions either causing drifting and wiggling dynamics of initially stationary cavity solitons or leading to stabilization of intrinsically moving solutions. Finally, we demonstrate that the fast cavity solitons can be associated with a lateral mode-locking regime in a broad-area laser with a single longitudinal mode.
Host-Kra factors for $\bigoplus_{p\in P}\mathbb{Z}/p\mathbb{Z}$ actions and finite dimensional nilpotent systems
Creators: name: Shalom, Or
Publisher: name: arXiv
Year: 2021
Subjects: subject: Dynamical Systems (math.DS)
subject: FOS: Mathematics

description: Let $\mathcal{P}$ be a countable multiset of primes and let $G=\bigoplus_{p\in P}\mathbb{Z}/p\mathbb{Z}$. We study the universal characteristic factors associated with the Gowers-Host-Kra seminorms for the group $G$. We show that the universal characteristic factor of order $
description: 78 pages, 2 figures. Journal version, to appear in Analysis and PDE
X-XROMASOMA TAHLILI ORQALI QARINDOSHLIKNI ANIQLASH
Creators: name: Qalandarov, Og'abek
Publisher: name: Zenodo
Year: 2024

description: Mazkur maqolada X-Xromasoma markerlari yordamida murakkab qarindoshlik darajalarini aniqlashda foydalanishni ilmiy va statistik asoslari batafsil yoritilgan
Evolution of Band Topology by Competing Band Overlap and Spin-Orbit Coupling: Twin Dirac Cones in Ba$_3$SnO as a Prototype
Creators: name: Kariyado, Toshikaze
name: Ogata, Masao
Publisher: name: arXiv
Year: 2017
Subjects: subject: Mesoscale and Nanoscale Physics (cond-mat.mes-hall)
subject: Materials Science (cond-mat.mtrl-sci)
subject: FOS: Physical sciences

description: We theoretically demonstrate how competition between band inversion and spin-orbit coupling (SOC) results in nontrivial evolution of band topology, taking antiperovskite Ba$_3$SnO as a prototype material. A key observation is that when the band inversion dominates over SOC, there appear "twin" Dirac cones in the band structure. Due to the twin Dirac cones, the band shows highly peculiar structure in which the upper cone of one of the twin continuously transforms to the lower cone of the other. Interestingly, the relative size of the band inversion and SOC is controlled in this series of antiperovskite A$_3$EO by substitution of A (Ca, Sr, Ba) and/or E (Sn, Pb) atoms. Analysis of an effective model shows that the emergence of twin Dirac cones is general, which makes our argument a promising starting point for finding a singular band structure induced by the competing band inversion and SOC.
Orbital and escape dynamics in barred galaxies - II. The 3D system: Exploring the role of the normally hyperbolic invariant manifolds
Creators: name: Jung, Christof
name: Zotos, Euaggelos E.
Publisher: name: arXiv
Year: 2016
Subjects: subject: Astrophysics of Galaxies (astro-ph.GA)
subject: FOS: Physical sciences

description: A three degrees of freedom (3-dof) barred galaxy model composed of a spherically symmetric nucleus, a bar, a flat disc and a spherically symmetric dark matter halo is used for investigating the dynamics of the system. We use colour-coded plots to demonstrate how the value of the semi-major axis of the bar influences the regular or chaotic dynamics of the 3-dof system. For distinguishing between ordered and chaotic motion we use the Smaller ALingment Index (SALI) method, a fast yet very accurate tool. Undoubtedly, the most important elements of the dynamics are the normally hyperbolic invariant manifolds (NHIMs) located in the vicinity of the index 1 Lagrange points $L_2$ and $L_3$. These manifolds direct the flow of stars over the saddle points, while they also trigger the formation of rings and spirals. The dynamics in the neighbourhood of the saddle points is visualized by bifurcation diagrams of the Lyapunov orbits as well as by the restriction of the Poincaré map to the NHIMs. In addition, we reveal how the semi-major axis of the bar influences the structure of these manifolds which determine the final stellar structure (rings or spirals). Our numerical simulations suggest that in galaxies with weak bars the formation of $R_1$ rings or $R_1'$ pseudo-rings is favoured. In the case of galaxies with intermediate and strong bars the invariant manifolds seem to give rise to $R_1R_2$ rings and twin spiral formations, respectively. We also compare our numerical outcomes with earlier related work and with observational data.
description: Published in Monthly Notices of the Royal Astronomical Society (MNRAS) journal
Representation stability for homotopy automorphisms
Creators: name: Lindell, Erik
name: Saleh, Bashar
Publisher: name: arXiv
Year: 2021
Subjects: subject: Algebraic Topology (math.AT)
subject: FOS: Mathematics
subject: 55P62

description: We consider in parallel pointed homotopy automorphisms of iterated wedge sums of topological spaces and boundary relative homotopy automorphisms of iterated connected sums of manifolds minus a disk. Under certain conditions on the spaces and manifolds, we prove that the rational homotopy groups of these homotopy automorphisms form finitely generated FI-modules, and thus satisfy representation stability for symmetric groups, in the sense of Church and Farb.
description: Version 2. Major revision. Explicit stability ranges added to Theorem A and Theorem B. Proof added that the FI-Q-module considered in Theorem B is the rationalization of an FI-Z-module, constructed in a geometric way. Accepted for publication in "Algebraic and Geometric Topology"
Porosity and regularity in metric measure spaces
Creators: name: Käenmäki, Antti
Publisher: name: arXiv
Year: 2017
Subjects: subject: Classical Analysis and ODEs (math.CA)
subject: FOS: Mathematics

description: This is a report of a joint work with E. Järvenpää, M. Järvenpää, T. Rajala, S. Rogovin, and V. Suomala. In [3], we characterized uniformly porous sets in $s$-regular metric spaces in terms of regular sets by verifying that a set $A$ is uniformly porous if and only if there is $t < s$ and a $t$-regular set $F \supset A$. Here we outline the main idea of the proof and also present an alternative proof for the crucial lemma needed in the proof of the result.
Complexity in Education: A New Era Begins - Editorial
Creators: name: Stamovlasis, Dimitrios
name: Koopmans, Matthijs
Publisher: name: International Journal of Complexity in Education
Year: 2023

description: It is our pleasure to welcome you to the inaugural issue of the International Journal of Complexity in Education (IJCE).
description: International Journal of Complexity in Education, Vol 1, No 1 (2020)
Topological Hochschild homology of truncated Brown-Peterson spectra I
Creators: name: Angelini-Knoll, Gabriel
name: Culver, Dominic Leon
name: Höning, Eva
Publisher: name: arXiv
Year: 2021
Subjects: subject: Algebraic Topology (math.AT)
subject: K-Theory and Homology (math.KT)
subject: FOS: Mathematics
subject: 55P42, 55P43, 55Q51, 55Q10, 16E40, 19D55, 55N22, 55T99

description: We compute topological Hochschild homology of sufficiently structured forms of truncated Brown--Peterson spectra with coefficients. In particular, we compute $\mathrm{THH}_*(B\langle n\rangle ;H\mathbb{Z}_{(p)})$ for all $n$ and $\mathrm{THH}_*(B\langle 2\rangle ;M)$ for $M\in \{ k(1),k(2)\}$ where $B\langle n\rangle$ is an $E_3$ form of $BP\langle n\rangle$ for certain primes $p$. For example, this gives a computation of $\mathrm{THH}(\mathrm{taf}^{D};M)$ for $M\in \{H\mathbb{Z}_{(3)},k(1),k(1))$ where $\mathrm{taf}^{D}$ is the $E_{\infty}$ form of $BP\langle 2\rangle$ constructed by Hill--Lawson.
description: 27 pages including references. Accepted version. To appear in Algebraic & Geometric Topology
War Diary of 1st Battalion Canadian Scottish Regiment, Vol. 20, April 1, 1941 to April 30, 1941
Creators: name: Canada. Canadian Army. Canadian Scottish Regiment (Princess Mary's)
Publisher: name: University of Victoria Libraries
Year: 2020
Subjects: subject: Canada. Canadian Army
valueUri: http://id.worldcat.org/fast/531187
subject: Canada. Canadian Army. Canadian Scottish Regiment (Princess Mary's)
subject: World War (1939-1945)
valueUri: http://id.worldcat.org/fast/1180924
subject: War diaries
valueUri: http://id.worldcat.org/fast/1745536

description: The war diaries are official records kept by the Battalions during a one month period. They contain the daily orders, correspondence, newsletters, and an intelligence log detailing troop activities, locations, and weather conditions. The war diaries detail the activities and movement of the 1st Battalion from training in Canada and England to active duty on the Western Front and their return to Victoria in January 1946. This diary was kept while at Debert Military Camp, Nova Scotia. It has entries about training, new canteen opening, organized sports, using gravel to fix road problems, marching exercises, troop movements, press photographers taking shots of training, and all men being issued tartan patches to be placed under cap on their tam-o-shanters, among other activities and information.