cometadata/datacite-rtg-text-other-reclassification-records huggingface dataset:
The purpose of renaming skills in fraction algorithms
Creators: name: Carlson, Florine Kiyomi
Publisher: name: University of British Columbia
Year: 2010

description: The study was designed in two parts. The purpose of the first part was to gather evidence to support a model hypothesizing relationships between the fraction algorithms, that is, specified algorithms for addition, subtraction, multiplication, and division, and renaming skills, that is, specified skills for renaming for the algorithm (RAL) and renaming for the answer (RAN). The purpose of the second part was to investigate the effects in performance of the subtraction algorithm, of reviewing the five RAL skills hypothesized as relating directly to the subtraction of fractions algorithm (treatment one); and to investigate the effects in performance of each of the four algorithms, of reviewing the purpose of the five RAL skills within the subtraction algorithm (treatment two). A repeated measures, hierarchical design was employed in which six sixth-grade classes were assigned to one of three experimental groups, so that no treatment was replicated in any one school. Group A received both treatment one and treatment two. Group B received treatment one. While Group A was receiving treatment two, Group B was instructed in geometry. Group C (control group) received instruction in geometry and measurement during the treatment periods. Treatment one was administered on each of five consecutive days. Treatment two was administered in one day. The regular mathematics teacher for each classroom participated in the experiment. Lesson plans and worksheets for the treatments were provided by the experimenter. A pretest consisting of three parts: Part A on the seven RAL skills, Part B on the nine RAN skills, and Part C on the four algorithms, was administered on two consecutive days before the treatments. Posttest one consisting of two parts: Part A on the five RAL skills, and Part B on subtraction, was administered in one day following treatment one. Posttest two consisting of the same parts as the pretest, was administered on two consecutive days following treatment two. All tests were constructed by the experimenter. For Bart One of the problem, two computer programs, an item analysis and a frequency tabulation, were used. Evidence was found to support the proposed model. In other words, there appears to be a relationship between RAL skills and algorithm achievement, particularly for addition and subtraction; and between RAN skills and the ability to obtain a simplified answer for each of the four fraction algorithms. For Part Two of the problem, a random effects model, multivariate analysis of covariance was used to test the effects of the two treatments. Pretest scores were used as the covariate in the analysis. No statistical significance was found in performance of the subtraction algorithm following treatment one. No statistical significance was found in performance of the four algorithms following treatment two.
Energy harvesting from anisotropic fluctuations
Creators: name: Miangolarra, Olga Movilla
name: Taghvaei, Amirhossein
name: Fu, Rui
name: Chen, Yongxin
name: Georgiou, Tryphon T.
Publisher: name: arXiv
Year: 2021
Subjects: subject: Statistical Mechanics (cond-mat.stat-mech)
subject: Systems and Control (eess.SY)
subject: FOS: Physical sciences
subject: FOS: Electrical engineering, electronic engineering, information engineering

description: We consider a rudimentary model for a heat engine, known as the Brownian gyrator, that consists of an overdamped system with two degrees of freedom in an anisotropic temperature field. Whereas the hallmark of the gyrator is a nonequilibrium steady-state curl-carrying probability current that can generate torque, we explore the coupling of this natural gyrating motion with a periodic actuation potential for the purpose of extracting work. We show that path-lengths traversed in the manifold of thermodynamic states, measured in a suitable Riemannian metric, represent dissipative losses, while area integrals of a work-density quantify work being extracted. Thus, the maximal amount of work that can be extracted relates to an isoperimetric problem, trading off area against length of an encircling path. We derive an isoperimetric inequality that provides a universal bound on the efficiency of all cyclic operating protocols, and a bound on how fast a closed path can be traversed before it becomes impossible to extract positive work. The analysis presented provides guiding principles for building autonomous engines that extract work from anistropic fluctuations.
description: 5 pages 5 figures
Monte Carlo Cubature Construction
Creators: name: Hayakawa, Satoshi
Publisher: name: arXiv
Year: 2020
Subjects: subject: Numerical Analysis (math.NA)
subject: Probability (math.PR)
subject: FOS: Mathematics

description: In numerical integration, cubature methods are effective, especially when the integrands can be well-approximated by known test functions, such as polynomials. However, the construction of cubature formulas has not generally been known, and existing examples only represent the particular domains of integrands, such as hypercubes and spheres. In this study, we show that cubature formulas can be constructed for probability measures provided that we have an i.i.d. sampler from the measure and the mean values of given test functions. Moreover, the proposed method also works as a means of data compression, even if sufficient prior information of the measure is not available.
description: 10 pages
Analysis of the Effect of Atherosclerosis with the Changes of Hematocrit: A Computational Study on the Hemodynamics of Carotid Artery
Creators: name: Ahmed, Nihal
name: Ahmed, Ashfaq
name: Imran, Sakan Binte
Publisher: name: arXiv
Year: 2021
Subjects: subject: Medical Physics (physics.med-ph)
subject: Applied Physics (physics.app-ph)
subject: Fluid Dynamics (physics.flu-dyn)
subject: FOS: Physical sciences

description: Atherosclerosis is a state wherein plaque (fat, cholesterol, and different substances) develops inside the veins that in the end prompts carotid artery stenosis which is a phase of narrowing in the huge courses situated on either side of the neck that convey blood to the brain, face, and head. Carotid stenosis is regularly connected with perpetual injury of an aspect of the brain (strokes) because of loss of its blood flexibly. For instance, ischemia generally brings about serious handicap or demise. Hematocrit or pressed cell volume (PCV) is the volume of red blood corpuscles according to that of entire blood. The reason for our exploration is to carry out a Computational Fluid Dynamics (CFD) investigation of blood stream with the rate changes of hematocrit to examine the hemodynamic and physiological conduct of atherosclerosis. Our examination a developed 2D calculation model that has been investigated utilizing Finite volume technique (FVM) for interesting phases of atherosclerosis. The point of this investigation is to investigate the social bits of knowledge into the velocity slope, wall shear stress, and pressure gradient of carotid corridor under various rates of hematocrit and various phases of atherosclerosis. The investigation introduced convincing distinction in these boundaries which can be utilized to recognize the atherosclerosis development.
description: 7 pages,10 figures
Methodologies for visual correspondence
Creators: name: Tombari, Federico <1981>
Publisher: name: Alma Mater Studiorum - Università di Bologna
Year: 2009
Subjects: ING-INF/05 Sistemi di elaborazione delle informazioni

description: Visual correspondence is a key computer vision task that aims at identifying projections of the same 3D point into images taken either from different viewpoints or at different time instances. This task has been the subject of intense research activities in the last years in scenarios such as object recognition, motion detection, stereo vision, pattern matching, image registration. The approaches proposed in literature typically aim at improving the state of the art by increasing the reliability, the accuracy or the computational efficiency of visual correspondence algorithms.  

The research work carried out during the Ph.D. course and presented in this dissertation deals with three specific visual correspondence problems: fast pattern matching, stereo correspondence and robust image matching. The dissertation presents original contributions to the theory of visual correspondence, as well as applications dealing with 3D reconstruction and multi-view video surveillance.
Metodologie per il miglioramento delle stime di pericolosità sismica in Italia
Creators: name: Gulia, Laura <1976>
Publisher: name: Alma Mater Studiorum - Università di Bologna
Year: 2009
Subjects: GEO/10 Geofisica della terra solida

description: In questo lavoro di dottorato sono stati analizzati differenti strumenti impiegati per le stime di pericolosità sismica. 

Facendo riferimento alla Mappa di Pericolosità Sismica Italiana MPS04 (Gruppo di Lavoro MPS, 2004), redatta dall’Istituto Nazionale di Geofisica e Vulcanologia (INGV) e adottata come mappa di riferimento per il territorio nazionale ai sensi dell’Ordinanza PCM 3519 del 28 aprile 2006, All. 1b, è stato approfondito il calcolo dei tassi di sismicità attraverso la relazione di Gutenberg e Richter (1944).
In particolare, si è proceduto attraverso un confronto tra i valori ottenuti dagli autori della Mappa (Gruppo di Lavoro MPS, 2004) e i valori ottenuti imponendo un valore costante e unico al parametro b della relazione (Gutenberg e Richter, 1944).

Il secondo tema affrontato è stato l’analisi della presenza di eventi di origine non tettonica in un catalogo. Nel 2000 Wiemer e Baer hanno proposto un algoritmo che identifica e rimuove gli eventi di origine antropica. Alla metodologia di Wiemer e Baer (2000) sono state apportate delle modifiche al fine di limitare la rimozione di eventi naturali. Tale analisi è stata condotta sul Catalogo Strumentale della Sismicità Italiana (CSI 1.1; Castello et al., 2006) e sui cataloghi Europei disponibili online: Spagna e Portogallo, Francia, Nord Europa, Repubblica Ceca, Romania, Grecia. 

L’ultimo argomento trattato ha riguardato la presunta correlazione tra i meccanismi di fagliazione e il parametro b della relazione di Gutenberg e Richter (1944). Nel lavoro di Schorlemmer et al. (2005), tale correlazione è dimostrata calcolando il b-value su una griglia a scala mondiale raggruppando i terremoti in funzione dell’angolo di rake: i valori maggiori del parametro sono misurati per i terremoti che si originano in un regime distensivo, seguono quelli in un regime trascorrente mentre i valori minori si registrano nelle aree a regime compressivo.
Il principale ostacolo per una applicazione del metodo al territorio italiano è rappresentato dal numero ridotto di terremoti per i quali è possibile avere indicazioni circa il meccanismo focale della sorgente: la correlazione è stata così valutata calcolando il b-value all’interno delle zone sismogenetiche definite per la realizzazione di MPS04 (Gruppo di Lavoro MPS, 2004), alle quali è stato nuovamente assegnato un meccanismo di fagliazione prevalente attraverso la somma del tensore momento.

Sono inoltre allegati lavori altri lavori prodotti nell’ambito della pericolosità sismica.
Quasiparticle band structures of bulk and few-layer PdSe2 from first-principles GW calculations
Creators: name: Kim, Han-gyu
name: Choi, Hyoung Joon
Publisher: name: arXiv
Year: 2021
Subjects: subject: Materials Science (cond-mat.mtrl-sci)
subject: FOS: Physical sciences

description: We performed first-principles density functional theory (DFT) and GW calculations to investigate electronic structures of bulk and few-layer PdSe2. We obtained the quasiparticle band structure of bulk PdSe2, and the obtained energy gap agrees excellently with the reported experimental value. For monolayer and bilayer PdSe2, we obtained quasiparticle band structures with respect to the vacuum level. We analyzed DFT and GW band structures in detail, finding k-space positions of valence band maxima and conduction band minima, effective masses, the quasiparticle density of states, work functions, ionization potentials, electron affinities, and k-space shapes of electron and hole pockets. These results provide a foundation for development of basic studies and device applications.
description: 7 pages and 6 figures
Multiple Visual-Semantic Embedding for Video Retrieval from Query Sentence
Creators: name: Nguyen, Huy Manh
name: Miyazaki, Tomo
name: Sugaya, Yoshihiro
name: Omachi, Shinichiro
Publisher: name: arXiv
Year: 2020
Subjects: subject: Computer Vision and Pattern Recognition (cs.CV)
subject: FOS: Computer and information sciences

description: Visual-semantic embedding aims to learn a joint embedding space where related video and sentence instances are located close to each other. Most existing methods put instances in a single embedding space. However, they struggle to embed instances due to the difficulty of matching visual dynamics in videos to textual features in sentences. A single space is not enough to accommodate various videos and sentences. In this paper, we propose a novel framework that maps instances into multiple individual embedding spaces so that we can capture multiple relationships between instances, leading to compelling video retrieval. We propose to produce a final similarity between instances by fusing similarities measured in each embedding space using a weighted sum strategy. We determine the weights according to a sentence. Therefore, we can flexibly emphasize an embedding space. We conducted sentence-to-video retrieval experiments on a benchmark dataset. The proposed method achieved superior performance, and the results are competitive to state-of-the-art methods. These experimental results demonstrated the effectiveness of the proposed multiple embedding approach compared to existing methods.
description: 8 pages, 5 figures
Convergence to Lévy stable processes under some weak dependence conditions
Creators: name: Tyran-Kaminska, Marta
Publisher: name: arXiv
Year: 2009
Subjects: subject: Probability (math.PR)
subject: Dynamical Systems (math.DS)
subject: FOS: Mathematics
subject: 60F17, 60F05, 60G51, 60G55

description: For a strictly stationary sequence of random vectors in $\mathbb{R}^d$ we study convergence of partial sum processes to Lévy stable process in the Skorohod space with $J_1$-topology. We identify necessary and sufficient conditions for such convergence and provide sufficient conditions when the stationary sequence is strongly mixing.
description: Change of the title. Minor revisions
Chaotic Transport and Chronology of Complex Asteroid Families
Creators: name: Novakovic, Bojan
name: Tsiganis, Kleomenis
name: Knezevic, Zoran
Publisher: name: arXiv
Year: 2009
Subjects: subject: Earth and Planetary Astrophysics (astro-ph.EP)
subject: FOS: Physical sciences

description: We present a transport model that describes the orbital diffusion of asteroids in chaotic regions of the 3-D space of proper elements. Our goal is to use a simple random-walk model to study the evolution and derive accurate age estimates for dynamically complex asteroid families. To this purpose, we first compute local diffusion coefficients, which characterize chaotic diffusion in proper eccentricity (e_p) and inclination (I_p), in a selected phase-space region. Then, a Monte-Carlo-type code is constructed and used to track the evolution of random walkers (i.e. asteroids), by coupling diffusion in (e_p,I_p) with a drift in proper semi-major axis (a_p) induced by the Yarkovsky/YORP thermal effects. We validate our model by applying it to the family of (490) Veritas, for which we recover previous estimates of its age (~8.3 Myr). Moreover, we show that the spreading of chaotic family members in proper elements space is well reproduced in our random-walk simulations. Finally, we apply our model to the family of (3556) Lixiaohua, which is much older than Veritas and thus much more affected by thermal forces. We find the age of the Lixiaohua family to be 155+/-36 Myr.
description: 11 pages, 11 figures, Accepted for publication in MNRAS
The changing politics of preference formation in international trade negotiations: the European Union in the Doha Round
Creators: name: Poletti, Arlo <1977>
Publisher: name: Alma Mater Studiorum - Università di Bologna
Year: 2009
Subjects: SPS/04 Scienza politica

description: This research seeks to provide an explanation for variations of “politics” of preference formation in international trade negotiations. Building on the ‘policy determines politics’ argument, I hypothesize the existence of a causal relationship between issue-characteristics and their variations with politics dynamics and their variations. More specifically, this study seeks to integrate into a single analytical framework two dimensions along which variations in the “politics of preference formation” can be organized:  configurations of power relationships among the relevant actors in the structures within which they interact as well as the logic and the motivations of the actors involved in the policy making process. To do so, I first construct a four-cell typology of ‘politics of preference formation’ and, then, I proceed by specifying that the type of state-society configurations as well as the type of actors’ motivations in the “politics of preference formation” depend, respectively, on the degree to which a policy issue is perceived as politically salient and on the extent to which the distributional implications of such an issue can be calculated by the relevant stakeholders in the policy making process. The empirical yardstick against which the validity of the theoretical argument proposed is tested is drawn from evidence concerning the European Union’s negotiating strategy in four negotiating areas in the context of the so-called WTO’s Doha Development Round of multilateral trade negotiations: agriculture, competition, environment and technical assistance and capacity building.
Supplementary document for Single-shot observation of nonlinear pulse splitting in a Kerr medium - 6695782.pdf
Creators: name: Chang, Yen-Yu
name: Gulley, Jeremy
name: Li, Zhengyan
name: Welch, James
name: Zgadzaj, Rafal
name: Bernstein, Aaron
name: Downer, Michael
Publisher: name: Optica Publishing Group
Year: 2023
Subjects: Uncategorized

description: Supplemental Material
Search for Continuous Gravitational Wave Signals in Pulsar Timing Residuals: A New Scalable Approach with Diffusive Nested Sampling
Creators: name: Songsheng, Yu-Yang
name: Qian, Yi-Qian
name: Li, Yan-Rong
name: Du, Pu
name: Chen, Jie-Wen
name: Wang, Yan
name: Mohanty, Soumya D.
name: Wang, Jian-Min
Publisher: name: arXiv
Year: 2021
Subjects: subject: Instrumentation and Methods for Astrophysics (astro-ph.IM)
subject: Astrophysics of Galaxies (astro-ph.GA)
subject: General Relativity and Quantum Cosmology (gr-qc)
subject: FOS: Physical sciences

description: Detecting continuous nanohertz gravitational waves (GWs) generated by individual close binaries of supermassive black holes (CB-SMBHs) is one of the primary objectives of pulsar timing arrays (PTAs). The detection sensitivity is slated to increase significantly as the number of well-timed millisecond pulsars will increase by more than an order of magnitude with the advent of next-generation radio telescopes. Currently, the Bayesian analysis pipeline using parallel tempering Markov chain Monte Carlo has been applied in multiple studies for CB-SMBH searches, but it may be challenged by the high dimensionality of the parameter space for future large-scale PTAs. One solution is to reduce the dimensionality by maximizing or marginalizing over uninformative parameters semi-analytically, but it is not clear whether this approach can be extended to more complex signal models without making overly simplified assumptions. Recently, the method of diffusive nested (DNest) sampling shown the capability of coping with high dimensionality and multimodality effectively in Bayesian analysis. In this paper, we apply DNest to search for continuous GWs in simulated pulsar timing residuals and find that it performs well in terms of accuracy, robustness, and efficiency for a PTA including $\mathcal{O}(10^2)$ pulsars. DNest also allows a simultaneous search of multiple sources elegantly, which demonstrates its scalability and general applicability. Our results show that it is convenient and also high beneficial to include DNest in current toolboxes of PTA analysis.
description: 20 pages, 10 figures, submitted to ApJ
Capture of Inelastic Dark Matter in White Dwarves
Creators: name: McCullough, Matthew
name: Fairbairn, Malcolm
Publisher: name: arXiv
Year: 2010
Subjects: subject: High Energy Physics - Phenomenology (hep-ph)
subject: Cosmology and Nongalactic Astrophysics (astro-ph.CO)
subject: FOS: Physical sciences

description: We consider the capture of inelastic dark matter in white dwarves by inelastic spin-independent scattering on nuclei. We show that if the dark matter annihilates to standard-model particles then, under the assumption of primordial globular cluster formation, the observation of cold white dwarves in the globular cluster M4 appears inconsistent with explanations of the observed DAMA/LIBRA annual modulation signal based on spin-independent inelastic dark matter scattering. Alternatively if the inelastic dark matter scenario were to be confirmed and it was found to annihilate to standard-model particles then this would imply a much lower dark matter density in the core of M4 than would be expected if it were to have formed in a dark matter halo. Finally we argue that cold white dwarves constitute a unique dark matter probe, complementary to other direct and indirect detection searches.
description: 8 pages, 5 figures. Typos corrected. References and discussion added. Figures updated. Main conclusions unchanged. v3 Journal version
Minimal $W^{s,\frac{n}{s}}$-harmonic maps in homotopy classes
Creators: name: Mazowiecka, Katarzyna
name: Schikorra, Armin
Publisher: name: arXiv
Year: 2020
Subjects: subject: Analysis of PDEs (math.AP)
subject: Algebraic Topology (math.AT)
subject: Differential Geometry (math.DG)
subject: Functional Analysis (math.FA)
subject: FOS: Mathematics

description: Let $Σ$ a closed $n$-dimensional manifold, $\mathcal{N} \subset \mathbb{R}^M$ be a closed manifold, and $u \in W^{s,\frac ns}(Σ,\mathcal{N})$ for $s\in(0,1)$. We extend the monumental work of Sacks and Uhlenbeck by proving that if $π_n(\mathcal{N})=\{0\}$ then there exists a minimizing $W^{s,\frac ns}$-harmonic map homotopic to $u$. If $π_n(\mathcal{N})\neq \{0\}$, then we prove that there exists a $W^{s,\frac{n}{s}}$-harmonic map from $\mathbb{S}^n$ to $\mathcal{N}$ in a generating set of $π_{n}(\mathcal{N})$. Since several techniques, especially Pohozaev-type arguments, are unknown in the fractional framework (in particular when $\frac{n}{s} \neq 2$ one cannot argue via an extension method), we develop crucial new tools that are interesting on their own: such as a removability result for point-singularities and a balanced energy estimate for non-scaling invariant energies. Moreover, we prove the regularity theory for minimizing $W^{s,\frac{n}{s}}$-maps into manifolds.
description: 94 pages, comments welcome
Derived Smooth Manifolds
Creators: name: Spivak, David I.
Publisher: name: arXiv
Year: 2008
Subjects: subject: Algebraic Topology (math.AT)
subject: Algebraic Geometry (math.AG)
subject: Category Theory (math.CT)
subject: FOS: Mathematics
subject: 55N22 (Primary); 55N33; 18F20 (Secondary)

description: We define a simplicial category called the category of derived manifolds. It contains the category of smooth manifolds as a full discrete subcategory, and it is closed under taking arbitrary intersections in a manifold. A derived manifold is a space together with a sheaf of local $C^\infty$-rings that is obtained by patching together homotopy zero-sets of smooth functions on Euclidean spaces. We show that derived manifolds come equipped with a stable normal bundle and can be imbedded into Euclidean space. We define a cohomology theory called derived cobordism, and use a Pontrjagin-Thom argument to show that the derived cobordism theory is isomorphic to the classical cobordism theory. This allows us to define fundamental classes in cobordism for all derived manifolds. In particular, the intersection $A\cap B$ of submanifolds $A,B\subset X$ exists on the categorical level in our theory, and a cup product formula $$[A]\smile[B]=[A\cap B]$$ holds, even if the submanifolds are not transverse. One can thus consider the theory of derived manifolds as a {\em categorification} of intersection theory.
description: 57 pages. Reformulation of author's PhD thesis. To appear in Duke Math J.
Attention based Sequence to Sequence Learning for Machine Translation of Low Resourced Indic Languages -- A case of Sanskrit to Hindi
Creators: name: Bakarola, Vishvajit
name: Nasriwala, Jitendra
Publisher: name: arXiv
Year: 2021
Subjects: subject: Computation and Language (cs.CL)
subject: Artificial Intelligence (cs.AI)
subject: FOS: Computer and information sciences

description: Deep Learning techniques are powerful in mimicking humans in a particular set of problems. They have achieved a remarkable performance in complex learning tasks. Deep learning inspired Neural Machine Translation (NMT) is a proficient technique that outperforms traditional machine translation. Performing machine-aided translation on Indic languages has always been a challenging task considering their rich and diverse grammar. The neural machine translation has shown quality results compared to the traditional machine translation approaches. The fully automatic machine translation becomes problematic when it comes to low-resourced languages, especially with Sanskrit. This paper presents attention mechanism based neural machine translation by selectively focusing on a particular part of language sentences during translation. The work shows the construction of Sanskrit to Hindi bilingual parallel corpus with nearly 10K samples and having 178,000 tokens. The neural translation model equipped with an attention mechanism has been trained on Sanskrit to Hindi parallel corpus. The approach has shown the significance of attention mechanisms to overcome long-term dependencies, primarily associated with low resources Indic languages. The paper shows the attention plots on testing data to demonstrate the alignment between source and translated words. For the evaluation of the translated sentences, manual score based human evaluation and automatic evaluation metric based techniques have been adopted. The attention mechanism based neural translation has achieved 88% accuracy in human evaluation and a BLEU score of 0.92 on Sanskrit to Hindi translation.
description: Published with International Journal of Engineering Trends and Technology (IJETT)
Convergence structures and locally solid topologies on vector lattices of operators
Creators: name: Deng, Yang
name: de Jeu, Marcel
Publisher: name: arXiv
Year: 2020
Subjects: subject: Functional Analysis (math.FA)
subject: FOS: Mathematics

description: For vector lattices $E$ and $F$, where $F$ is Dedekind complete and supplied with a locally solid topology, we introduce the corresponding locally solid absolute strong operator topology on the order bounded operators $\mathcal L_{\mathrm{ob}}(E,F)$ from $E$ into $F$. Using this, it follows that $\mathcal L_{\mathrm{ob}}(E,F)$ admits a Hausdorff uo-Lebesgue topology whenever $F$ does. For each of order convergence, unbounded order convergence, and-when applicable-convergence in the Hausdorff uo-Lebesgue topology, there are both a uniform and a strong convergence structure on $\mathcal L_{\mathrm {ob}}(E,F)$. Of the six conceivable inclusions within these three pairs, only one is generally valid. On the orthomorphisms of a Dedekind complete vector lattice, however, five are generally valid, and the sixth is valid for order bounded nets. The latter condition is redundant in the case of sequences of orthomorphisms on a Banach lattice, as a consequence of a uniform order boundedness principle for orthomorphisms that we establish. We also show that, in contrast to general order bounded operators, the orthomorphisms preserve not only order convergence of nets, but unbounded order convergence and -- when applicable -- convergence in the Hausdorff uo-Lebesgue topology as well.
description: Minor changes in presentation and some typos corrected; uniform order boundedness principle now established for general vector lattices. Final version, 32 pages, to appear in Banach J. Math. Anal
Geometric inflexibility and 3-manifolds that fiber over the circle
Creators: name: Brock, Jeffrey
name: Bromberg, Kenneth
Publisher: name: arXiv
Year: 2009
Subjects: subject: Geometric Topology (math.GT)
subject: Differential Geometry (math.DG)
subject: FOS: Mathematics
subject: 30F40, 37F30, 37F40,

description: We prove hyperbolic 3-manifolds are geometrically inflexible: a unit quasiconformal deformation of a Kleinian group extends to an equivariant bi-Lipschitz diffeomorphism between quotients whose pointwise bi-Lipschitz constant decays exponentially in the distance form the boundary of the convex core for points in the thick part. Estimates at points in the thin part are controlled by similar estimates on the complex lengths of short curves. We use this inflexibility to give a new proof of the convergence of pseudo-Anosov double-iteration on the quasi-Fuchsian space of a closed surface, and the resulting hyperbolization theorem for closed 3-manifolds that fiber over the circle with pseudo-Anosov monodromy.
description: 52 pages. Final version. Appeared in Journal of Topology. Material in original version on inflexibility of hyperbolic cone-manifolds has been rewritten into a new paper with identifier arXiv:1412.4635
Heralded spectroscopy reveals exciton-exciton correlations in single colloidal quantum dots
Creators: name: Lubin, Gur
name: Tenne, Ron
name: Ulku, Arin Can
name: Antolovic, Ivan Michel
name: Burri, Samuel
name: Karg, Sean
name: Yallapragada, Venkata Jayasurya
name: Bruschini, Claudio
name: Charbon, Edoardo
name: Oron, Dan
Publisher: name: arXiv
Year: 2021
Subjects: subject: Mesoscale and Nanoscale Physics (cond-mat.mes-hall)
subject: Chemical Physics (physics.chem-ph)
subject: Optics (physics.optics)
subject: Quantum Physics (quant-ph)
subject: FOS: Physical sciences

description: Multiply-excited states in semiconductor quantum dots feature intriguing physics and play a crucial role in nanocrystal-based technologies. While photoluminescence provides a natural probe to investigate these states, room temperature single-particle spectroscopy of their emission has so far proved elusive due to the temporal and spectral overlap with emission from the singly-excited and charged states. Here we introduce biexciton heralded spectroscopy, enabled by a single-photon avalanche diode array based spectrometer. This allows us to directly observe biexciton-exciton emission cascades and measure the biexciton binding energy of single quantum dots at room temperature, even though it is well below the scale of thermal broadening and spectral diffusion. Furthermore, we uncover correlations hitherto masked in ensembles, of the biexciton binding energy with both charge-carrier confinement and fluctuations of the local electrostatic potential. Heralded spectroscopy has the potential of greatly extending our understanding of charge-carrier dynamics in multielectron systems and of parallelization of quantum optics protocols.
description: 9+10 pages, 5+8 figures
Kiwifruit bud release from dormancy: effect of exogenous cytokinins
Creators: name: Fabbroni, Cristina <1979>
Publisher: name: Alma Mater Studiorum - Università di Bologna
Year: 2009
Subjects: AGR/03 Arboricoltura generale e coltivazioni arboree

description: A new formulate containing citokinins, that is commercialized as Cytokin, has been introduced as dormancy breaking agents. During a three-years study, Cytokin was applied at different concentrations and application times in two producing areas of the Emilia-Romagna region to verify its efficacy as a DBA. Cytokin application increased the bud break and showed a lateral flower thinning effect. Moreover, treated vines showed an earlier and more uniform flowering as compared to control ones. Results obtained on the productive performance revealed a constant positive effect in the fruit fresh weight at harvest. Moreover, Cytokin did not cause any phytotoxicity even at the highest concentrations. Starting from the field observation, which suggested the involvement of cytokinins in kiwifruit bud release from dormancy, 6-BA was applied in open field condition and molecular and histological analyses were carried out in kiwifruit buds collected starting from the endo dormant period up to complete bud break to compare the natural occurring situation to the one induced by exogenous cytokinin application. In details, molecular analyses were set up on to verify the expression of genes involved in the reactivation of cell cycle: cyclin D3, histone H4, cyclin-dependent kinase B, as well as of others which are known to be up regulated during bud release in other species, i.e.isopenteniltransferases (IPTs), which catalyze the first step in the CK biosynthesis, and sucrose synthase 1 and A, which are involved in the sugar supplied. Moreover, histological analyses of the cell division rate in kiwifruit bud apical meristems were performed. These analyses showed a reactivation of the cell divisions during bud release and changes in the expression level of the investigated genes.
Holographic Aspects of Fermi Liquids in a Background Magnetic Field
Creators: name: Albash, Tameem
name: Johnson, Clifford V.
Publisher: name: arXiv
Year: 2009
Subjects: subject: High Energy Physics - Theory (hep-th)
subject: FOS: Physical sciences

description: We study the effects of an external magnetic field on the properties of the quasiparticle spectrum of the class of 2+1 dimensional strongly coupled theories holographically dual to charged AdS$_4$ black holes at zero temperature. We uncover several interesting features. At certain values of the magnetic field, there are multiple quasiparticle peaks representing a novel level structure of the associated Fermi surfaces. Furthermore, increasing magnetic field deforms the dispersion characteristics of the quasiparticle peaks from non-Landau toward Landau behaviour. At a certain value of the magnetic field, just at the onset of Landau-like behaviour of the Fermi liquid, the quasiparticles and Fermi surface disappear.
description: 18 pages, 10 figures. Revised some of the terminology: changed non-separable solutions to infinite-sum solutions
Adiabatic evolution under quantum control
Creators: name: Wang, W.
name: Hou, S. C.
name: Yi, X. X.
Publisher: name: arXiv
Year: 2009
Subjects: subject: Quantum Physics (quant-ph)
subject: FOS: Physical sciences

description: One of the difficulties in adiabatic quantum computation is the limit on the computation time. Here we propose two schemes to speed-up the adiabatic evolution. To apply this controlled adiabatic evolution to adiabatic quantum computation, we design one of the schemes without any prior knowledge of the instantaneous eigenstates of the final Hamiltonian. Whereas in another scheme, the control is constructed with the instantaneous eigenstate that is the target state of the control. As an illustration, we study a two-level system driven by a time-dependent magnetic field under the control. The physics behind the control scheme is explained.
description: 5 pages, 3 figures
Subregion Spectrum Form Factor via Pseudo Entropy
Creators: name: Goto, Kanato
name: Nozaki, Masahiro
name: Tamaoka, Kotaro
Publisher: name: arXiv
Year: 2021
Subjects: subject: High Energy Physics - Theory (hep-th)
subject: Statistical Mechanics (cond-mat.stat-mech)
subject: Strongly Correlated Electrons (cond-mat.str-el)
subject: Quantum Physics (quant-ph)
subject: FOS: Physical sciences

description: We introduce a subsystem generalization of the spectral form factor via pseudo entropy, the von-Neumann entropy for the reduced transition matrix. We consider a transition matrix between the thermofield double state and its time-evolved state in two-dimensional conformal field theories, and study the time-dependence of the pseudo entropy for a single interval. We show that the real part of the pseudo entropy behaves similarly to the spectral form factor; it starts from the thermal entropy, initially drops to the minimum, then it starts increasing, and finally approaches the vacuum entanglement entropy. We also study the theory-dependence of its behavior by considering theories on a compact space.
description: 6 pages, 4 figures
Physiological and Biochemical Aspects of Iron Nutrition in Grapevine
Creators: name: Covarrubias Peña, José Ignacio <1981>
Publisher: name: Alma Mater Studiorum - Università di Bologna
Year: 2012
Subjects: AGR/03 Arboricoltura generale e coltivazioni arboree

description: The objective of this thesis was to study the response mechanisms of grapevine to Fe-deficiency and to potential Fe chlorosis prevention strategies. The results show that the presence of bicarbonate in the nutrient solution shifted the activity of PEPC and TCA cycle enzymes and the accumulation/translocation of organic acids in roots of Fe-deprived plants. The rootstock 140 Ruggeri displayed a typical behavior of calcicole plants under bicarbonate stress. The Fe chlorosis susceptible rootstock 101-14 reacted to a prolonged Fe-deficiency reducing the root activity of PEPC and MDH. Noteworthy, it accumulates high levels of citric acid in roots, indicating a low capacity to utilizing, transporting and/or exudating organic acids into the rhizosfere. In contrast, 110 Richter rootstock is capable to maintain an active metabolism of organic acids in roots, accumulating them to a lesser extent than 101-14. Similarly to 101-14, SO4 genotype displays a strong decrease of mechanisms associated to Fe chlorosis tolerance (PEPC and MDH enzymes). Nevertheless it is able to avoid excessive accumulation of citric acid in roots, similar as 110 Richter rootstock. Intercropping with Festuca rubra increased leaf chlorophyll content and net photosynthesis. In addition, intercropping reduces the activity of PEPC in roots, similary to Fe-chelate supply. Applications of NH4+ with nitrification inhibitor prevents efficiently Fe-deficiency, increases chlorophyll content, and induces similar root biochemical responses as Fe-EDDHA. Without the addition of nitrification inhibitors, the effectiveness of NH4+ supply on Fe chlorosis prevention resulted significantly lower. The aspects intertwined in this investigation highlight the complexity of Fe physiology and the fine metabolic tuning of grapevine genotypes to Fe availability and soil-related environmental factors. The experimental evidences reveal the need to carry out future researches on Fe nutrition maintaining a continous flow of knowledge between theoretical and agronomical perspectives for fully supporting the efforts devoted to convert science into practice.
Studio dei Vulcani di Fango per la definizione della Migrazione dei Fluidi Profondi
Study of Mud Volcanoes to define Deep Fluid Migration
Creators: name: Oppo, Davide <1984>
Publisher: name: Alma Mater Studiorum - Università di Bologna
Year: 2012
Subjects: GEO/02 Geologia stratigrafica e sedimentologica

description: L’unione di approcci differenti durante lo studio dei sistemi petroliferi, come l’accoppiamento dello studio delle emissioni in superficie con le analisi geochimiche e strutturali, è un aspetto principale nelle strategie di sviluppo per la ricerca degli idrocarburi. 
La presenza  di acqua connata nelle sequenze sedimentarie profonde e la sua sovrappressione che viene generata dalle spesse coperture sedimentarie, incrementata inoltre dalla generazione di idrocarburi in profondità, sono fattori di controllo primari per la migrazione e l’emissione di fluidi in superficie. 
I risultati ottenuti da questo studio forniscono nuovi elementi per la comprensione del ruolo dello studio dei vulcani di fango nell’esplorazione petrolifera, e nuove importanti prove per la caratterizzazione dei sistemi petroliferi nelle aree considerate.
description: To join different approaches in the study of petroleum systems, as to couple the study of surface seeps with geochemical and structural analysis, is a leading aspect in a development strategy for hydrocarbons.
The occurrence of pore water in the deep sedimentary successions and its overpressure due to the thick covering sequences, which is enhanced by the hydrocarbons generation at depth, are primary controls for the fluid migration and emission at the surface through the cold seeps. 
The results from this study provide new elements to understand the role of mud volcanoes study in the frame of petroleum exploration, and new important evidences for the petroleum systems in the areas considered.
Monte Carlo construction of cubature on Wiener space
Creators: name: Hayakawa, Satoshi
name: Tanaka, Ken'ichiro
Publisher: name: arXiv
Year: 2020
Subjects: subject: Probability (math.PR)
subject: Numerical Analysis (math.NA)
subject: FOS: Mathematics

description: In this paper, we investigate application of mathematical optimization to construction of a cubature formula on Wiener space, which is a weak approximation method of stochastic differential equations introduced by Lyons and Victoir (Cubature on Wiener Space, Proc. R. Soc. Lond. A 460, 169--198). After giving a brief review of the cubature theory on Wiener space, we show that a cubature formula of general dimension and degree can be obtained through a Monte Carlo sampling and linear programming. This paper also includes an extension of stochastic Tchakaloff's theorem, which technically yields the proof of our primary result.
description: 25 pages
Hybrid inflation with moduli stabilization and low scale supersymmetry breaking
Creators: name: Mooij, Sander
name: Postma, Marieke
Publisher: name: arXiv
Year: 2010
Subjects: subject: High Energy Physics - Phenomenology (hep-ph)
subject: Cosmology and Nongalactic Astrophysics (astro-ph.CO)
subject: High Energy Physics - Theory (hep-th)
subject: FOS: Physical sciences

description: We study the supergravity hybrid inflation model of Ref.[1] in the presence of a modulus field. The eta-problem is solved by a shift symmetry for the inflaton, which protects the inflaton mass even in the presence of the modulus field. Inflation is (nearly) unaffected by moduli stabilization, provided the scale of supersymmetry breaking in the post-inflation vacuum is small. Therefore the model has the nice phenomenology that it combines low scale supersymmetry breaking with high scale (grand unification scale) inflation.
description: Published version. 16 pages, 4 figures
The creative writing course in the British Columbia senior secondary school : a telephoto examination with accompanying curriculum development guidelines
Creators: name: Jamieson, Norma
Publisher: name: University of British Columbia
Year: 2010

description: This in-depth examination of the Creative Writing course in the British Columbia secondary schools with accompanying curriculum development guidelines was prompted because of the provincial lack of course survey information and the lack of materials and guidelines for teachers to use when developing their individual Creative Writing curricula. Creative writing is defined as an inextricable combination of both process and product, sufficiently distinct from standard classroom expository writing to warrant a separate label. A separate course in Creative Writing is justified by contemporary studies of talented students which emphasize homogeneous grouping to encourage the particular talent concerned. Creativity, creative writing specifically, is a distinct talent. The provincial survey effected compilation of a list of British Columbia schools offering Creative Writing with the respective teachers. The survey questionnaire included questions concerning methodology and content of the Creative writing course. Tabulated results and teacher comments confirm the great diversity of Creative Writing curricula offered throughout British Columbia, the extreme variation in teacher confidence, and the general lack of prescribed teacher qualifications. The survey emphasized the teachers' need of realistic guidelines for curriculum development. Contemporary creativity research and theory are outlined as they affect the development of Creative Writing curricula. The creative personality, creativity needs and factors inhibiting creativity development are emphasized. Specific and practical curriculum development guidelines, intended for individual teacher use, are approached in a two stage concept that reflects the real world of writing. Stage One: Drafting explores experiential content that is small and ordinary, the teacher's role, journal use and observation skills. Stage Two: Editing and Publishing explores the validity and necessity of student publication, and various publication forms. The implications of publication for curriculum development that are dealt with are peer response, teacher as tutor, revision philosophy, editing of mechanics, form and style. Particular evaluation formats are delineated. Conclusions recommend reworking the Curriculum Guide and the Prescribed Textbook List. Guidelines for curriculum development need to be made available to each Creative Writing teacher, and attention must be directed to making the course an integral part of the writing world outside the classroom.
Periodic Activities of Repeating Fast Radio Bursts from Be/X-ray Binary Systems
Creators: name: Li, Qiao-Chu
name: Yang, Yuan-Pei
name: Wang, F. Y.
name: Xu, Kun
name: Shao, Yong
name: Liu, Ze-Nan
name: Dai, Z. G.
Publisher: name: arXiv
Year: 2021
Subjects: subject: High Energy Astrophysical Phenomena (astro-ph.HE)
subject: Solar and Stellar Astrophysics (astro-ph.SR)
subject: FOS: Physical sciences

description: The frequency-dependent periodic active window of the fast radio burst FRB 180916.J0158+65 (FRB 180916B) was observed recently. In this Letter, we propose that a Be/X-ray binary (BeXRB) system, which is composed of a neutron star (NS) and a Be star with a circumstellar disk, might be the source of a repeating FRB with periodic activities, and apply this model to explain the activity window of FRB 180916B. The interaction between the NS magnetosphere and the accreted material results in evolution of the spin period and the centrifugal force of the NS, leading to the change of the stress in the NS crust. When the stress of the crust reaches the critical value, a starquake occurs and further produces FRBs. The interval between starquakes is estimated to be a few days that is smaller than the active window of FRB 180916B. When the NS moves out of the disk of the Be star, the interval between starquakes becomes much longer than the orbital period, which corresponds to the non-active phase. In this model, due to the absorption of the disk of the Be star, a frequency-dependent active window would appear for the FRBs, which is consistent with the observed properties of FRB 180916B. And the contribution of dispersion measure (DM) from the disk of the Be star is small. In addition, the location of FRB 180916B in the host galaxy is consistent with a BeXRB system.
description: 11 pages, 5 figures, accepted for publication in ApJL