cometadata/datacite-rtg-text-other-reclassification-records huggingface dataset:
Exact Eigenfunctions of $N$-Body system with Quadratic Pair Potential
Creators: name: Wang, Zhaoliang
name: Wang, Anmin
name: Yang, Yang
name: Li, Xuechao
Publisher: name: arXiv
Year: 2011
Subjects: subject: Mathematical Physics (math-ph)
subject: Quantum Gases (cond-mat.quant-gas)
subject: Nuclear Theory (nucl-th)
subject: Quantum Physics (quant-ph)
subject: FOS: Physical sciences

description: We obtain all the exact eigenvalues and the corresponding eigenfunctions of $N$-body Bose and Fermi systems with Quadratic Pair Potentials in one dimension. The originally existed first excited state level is missing in one dimension, which results from the operation of symmetry or antisymmetry of identical particles. In two and higher dimensions, we give all the eigenvalues and the analytical ground state wave functions and the number of degeneracy. Through the comparison with Avinash Khare's results, we have perfected his results.
description: 7 pages,1 figure
Optimal Eviction Policies for Stochastic Address Traces
Creators: name: Bilardi, Gianfranco
name: Versaci, Francesco
Publisher: name: arXiv
Year: 2011
Subjects: subject: Data Structures and Algorithms (cs.DS)
subject: FOS: Computer and information sciences

description: The eviction problem for memory hierarchies is studied for the Hidden Markov Reference Model (HMRM) of the memory trace, showing how miss minimization can be naturally formulated in the optimal control setting. In addition to the traditional version assuming a buffer of fixed capacity, a relaxed version is also considered, in which buffer occupancy can vary and its average is constrained. Resorting to multiobjective optimization, viewing occupancy as a cost rather than as a constraint, the optimal eviction policy is obtained by composing solutions for the individual addressable items. This approach is then specialized to the Least Recently Used Stack Model (LRUSM), a type of HMRM often considered for traces, which includes V-1 parameters, where V is the size of the virtual space. A gain optimal policy for any target average occupancy is obtained which (i) is computable in time O(V) from the model parameters, (ii) is optimal also for the fixed capacity case, and (iii) is characterized in terms of priorities, with the name of Least Profit Rate (LPR) policy. An O(log C) upper bound (being C the buffer capacity) is derived for the ratio between the expected miss rate of LPR and that of OPT, the optimal off-line policy; the upper bound is tightened to O(1), under reasonable constraints on the LRUSM parameters. Using the stack-distance framework, an algorithm is developed to compute the number of misses incurred by LPR on a given input trace, simultaneously for all buffer capacities, in time O(log V) per access. Finally, some results are provided for miss minimization over a finite horizon and over an infinite horizon under bias optimality, a criterion more stringent than gain optimality.
description: 37 pages, 3 figures
D5.2 1st version of integrated and tested APOLLO platform
Creators: name: Anastasiadou, Ioulia
name: Kotsopoulos, Stylianos
name: Messinis, Dimitrios
name: Agrafiotis, Apostolos
Publisher: name: Zenodo
Year: 2017

description: This document aims at describing the progress and accomplishments made in WP5 during the duration of the work package. Furthermore, it tries to describe some of the APOLLO platform functionality that was implemented. Finally, the deliverable offers an overview of the next steps that are envisioned right after the delivery of the platform.
Information storage capacity of discrete spin systems
Creators: name: Yoshida, Beni
Publisher: name: arXiv
Year: 2011
Subjects: subject: Information Theory (cs.IT)
subject: Strongly Correlated Electrons (cond-mat.str-el)
subject: Mathematical Physics (math-ph)
subject: Cellular Automata and Lattice Gases (nlin.CG)
subject: Quantum Physics (quant-ph)
subject: FOS: Computer and information sciences
subject: FOS: Physical sciences

description: Understanding the limits imposed on information storage capacity of physical systems is a problem of fundamental and practical importance which bridges physics and information science. There is a well-known upper bound on the amount of information that can be stored reliably in a given volume of discrete spin systems which are supported by gapped local Hamiltonians. However, all the previously known systems were far below this theoretical bound, and it remained open whether there exists a gapped spin system that saturates this bound. Here, we present a construction of spin systems which saturate this theoretical limit asymptotically by borrowing an idea from fractal properties arising in the Sierpinski triangle. Our construction provides not only the best classical error-correcting code which is physically realizable as the energy ground space of gapped frustration-free Hamiltonians, but also a new research avenue for correlated spin phases with fractal spin configurations.
description: 35 pages, 12 figures
Geometry of the adiabatic theorem
Creators: name: Lobo, A. C.
name: Ribeiro, R. A.
name: Dieguez, P. R.
name: Ribeiro, C. A.
Publisher: name: arXiv
Year: 2011
Subjects: subject: Quantum Physics (quant-ph)
subject: FOS: Physical sciences

description: We present a simple and pedagogical derivation of the quantum adiabatic theorem for two level systems (a single qubit) based on geometrical structures of quantum mechanics developed by Anandan and Aharonov, among others. We have chosen to use only the minimum geometric structure needed for an understanding of the adiabatic theorem for this case.
description: 15 pages, 6 figures
Understanding Inflammatory Mechanisms during Interactions between Pseudomonas aeruginosa and Host Cells in the Context of Cystic Fibrosis
Creators: name: Phuong, Melissa Sen
Publisher: name: Université d'Ottawa / University of Ottawa
Year: 2021
Subjects: Pseudomonas aeruginosa
Cystic fibrosis
Inflammatory signalling

description: Cystic fibrosis (CF) is one of the most common genetic diseases in Europe and North America. Chronic bacterial infections with Pseudomonas aeruginosa (P. aeruginosa) are common among CF patients and are associated with increased disease progression among patients. While inflammation is considered to be a key driver of lung function decline, the precise mechanisms at play have remained unclear. The objective of this thesis was to evaluate the role of inflammatory signalling components that result in host cell death during respiratory infections observed in CF. First, I investigated the differences in inflammatory mechanisms and cytokine expression induced by P. aeruginosa isolated from early versus chronic infections in CF. I found that early respiratory isolates of P. aeruginosa from CF patients induced inflammasome signalling, cell death, and IL-1β expression by THP-1 macrophages, yet little expression of other proinflammatory cytokines. However, P. aeruginosa isolates from chronic infections induced relatively less THP-1 macrophage inflammasome signalling, cell death, and IL-1β expression but greater production of other cytokines. Using laboratory reference strains and various mutants of P. aeruginosa, I validated how due to their inability to induce early and extensive host cell death, isolates from chronic infections are able to induce sustained levels of proinflammatory cytokines, which may contribute to the pathogenesis observed in CF. I then investigated one specific virulence factor identified among clinical P. aeruginosa isolates, the effector protein ExoU. ExoU is known to induce rapid host cell death and has previously been described to be an inhibitor of caspase-1, limiting IL-1β secretion in immune cells. Using relevant laboratory reference strains, I have shown that ExoU is able to induce IL-1β expression at lower multiplicities of infection or at earlier time points than described in previous reports when infecting THP-1 macrophages and NuLi-1 bronchial epithelial cells. Through immunoblotting and the use of relevant inhibitors, it was found that this observed difference could be partially dependent on the activation of various caspases, including ones that induced canonical and non-canonical inflammasome activation. Overall, this described work adds to our understanding of respiratory infections observed among CF patients and could shed light on possible therapeutic options to reduce disease progression.
Three-dimensional modeling of metal plate connected wood truss joints
Creators: name: Liu, Xiaoqin
Publisher: name: University of British Columbia
Year: 2013

description: This thesis presents theoretical and experimental studies of metal-plate-connected (MPC) wood truss joints under uni-directional tension or out-of-plane bending. A theoretical computer program, SAMPC, was developed based on finite element method (FEM). MPC joint models were constructed using SAMPC, to evaluate the three-dimensional nonlinear performance of the joints. Experimental studies were carried out on MPC truss joints under tension. The joint failure modes were discussed, and the potential reasons for the failure were explored. Data processing techniques were applied to obtain the specific load-displacement relationships, which were in turn used as reference for model calibration and verification. Based on the experimental results, optimized model parameter calibration and model verification were discussed. The program application of MPC joints subjected to out-of-plane bending was investigated. Comparisons of the results from the joint bending test and model verified the applicability of the program for evaluating the out-of-plane rotational stiffness of MPC joints. A reliability analysis was conducted to evaluate the critical buckling load and lateral bracing force of single- and double-braced wood truss web systems. The probability characteristics of a number of variables that affect the performance of braced truss web system were investigated. Based on the results, a factor relating the ratio of the lateral restraining force and axial load was established. This factor with adequate reliability was recommended as a web/bracing design amendment to Canadian Code on Engineering Design of Wood. For the investigated truss joints, SAMPC appears to be superior in terms of its ability to simulate MPC joints in elaborate detail. This detailed model can aid in developing a better understanding of joint behavior under realistic joint configurations and loading conditions. The ability of the model to accurately predict the behavior of the designed MPC joints brings up the potential of modeling joints composed of different wood species and truss plate types featuring more complex joint configurations and loading conditions. The body of information from modeling results can be used to evaluate the adequacy of a given structural design, to facilitate truss plate, truss joint and overall truss design.
Onset temperature of Bose-Einstein condensation in incommensurate solid 4He
Creators: name: Rota, Riccardo
name: Boronat, Jordi
Publisher: name: arXiv
Year: 2011
Subjects: subject: Other Condensed Matter (cond-mat.other)
subject: FOS: Physical sciences

description: The temperature dependence of the one-body density matrix in 4He crystals presenting vacancies is computed with Path Integral Monte Carlo. The main purpose of this study is to estimate the onset temperature T_0 of Bose-Einstein condensation in these systems. We see that T_0 depends on the vacancy concentration X_v of the simulated system, but not following the law $T_0 \sim X_v^{2/3}$ obtained assuming non-interacting vacancies. For the lowest X_v we have studied, that is X_v = 1/256, we get T_0 = (0.15 \pm 0.05) K, close to the temperatures at which a finite fraction of non-classical rotational inertia is experimentally observed. Below T_0, vacancies do not act as classical point defects becoming completely delocalized entities.
description: 7 pages, 4 figures
The Relationship Between Metabolic Circumstance and Epigenetic Acetylation in Myoblast Fate and Function
Creators: name: Lim, Sean
Publisher: name: Université d'Ottawa / University of Ottawa
Year: 2021
Subjects: Myoblasts
Epigenetic
Histone
Metabolism

description: Muscle tissue is grown and maintained by muscle stem cells termed satellite cells. Activated satellite cells become myoblasts, which must proliferate then differentiate into functional muscle. This process, known as myogenesis, is controlled by a cascade of epigenetic regulatory events. One facet of this regulation is histone acetylation, which can be influenced by the availability of metabolites within a cell. In this study, the ability of glucose, pyruvate, or glutamine to change histone acetylation levels in cultured myoblasts was investigated. Changing concentrations of glucose or pyruvate had no effect but decreasing the availability of glutamine in cell culture from 2mM to 0.2mM resulted in proliferating myoblasts accruing a hyperacetylated histone phenotype. However, when the same concentration of glutamine was used on differentiating myoblasts the hyperacetylated phenotype was lost and no change to differentiation was observed. This study demonstrates the potentials and limitations of altering epigenetic acetylation with metabolic circumstance. -- Le développement du tissu musculaire est soutenu par les cellules souches musculaires, communément appelées cellules satellites. Les cellules satellites activées se transforment en myoblastes qui doivent ensuite proliférer et se différencier en muscle fonctionnel. Ce processus, connu comme myogenèse, est contrôlé par une cascade de régulation épigénétique. Un aspect de ce processus est l’acétylation d’histones, qui peut être influencée par la disponibilité de métabolites dans la cellule. Dans cette étude de cas, la capacité du glucose, pyruvate, ou glutamine à changer les niveaux d’acétylation d’histones a été examinée. Le changement des concentrations de glucose ou de pyruvate n’a généré aucun effet, mais la diminution de la disponibilité de la glutamine dans la culture cellulaire de 2mM à 0.2mM a eu pour résultat une prolifération de myoblastes présentant un phénotype d’histones hyper-acétylées. Pourtant, quand la même concentration de glutamine a été utilisée pour différencier les myoblastes, le phénotype hyper-acétylé n’a pas été observé et aucun changement de différenciation n’a pu être détecté. Cette étude démontre le potentiel et les limites des modifications de l’acétylation épigénétique selon les circonstances métaboliques.
Quasi-1D atomic gases across wide and narrow confinement-induced-resonances
Creators: name: Cui, Xiaoling
Publisher: name: arXiv
Year: 2012
Subjects: subject: Quantum Gases (cond-mat.quant-gas)
subject: FOS: Physical sciences

description: We study quasi-one-dimensional atomic gases across wide and narrow confinement-induced-resonances (CIR). We show from Virial expansion that by tuning the magnetic field, the repulsive scattering branch initially prepared at low fields can continuously go across CIR without decay; instead, the decay occurs when approaching the non-interacting limit. The interaction properties essentially rely on the resonance width of CIR. Universal thermodynamics holds for scattering branch right at wide CIR, but is smeared out in narrow CIR due to strong energy-dependence of coupling strength. In wide and narrow CIR, the interaction energy of scattering branch shows different types of strong asymmetry when approaching the decay from opposite sides of magnetic field. Finally we discuss the stability of repulsive branch for a repulsively interacting Fermi gas in different trapped geometries at low temperatures.
description: 7 pages, 4 figures
Twisting Graphene Nanoribbons into Carbon Nanotubes
Creators: name: Kit, O. O.
name: Tallinen, T.
name: Mahadevan, L.
name: Timonen, J.
name: Koskinen, P.
Publisher: name: arXiv
Year: 2011
Subjects: subject: Materials Science (cond-mat.mtrl-sci)
subject: Mesoscale and Nanoscale Physics (cond-mat.mes-hall)
subject: FOS: Physical sciences

description: Although carbon nanotubes consist of honeycomb carbon, they have never been fabricated from graphene directly. Here, it is shown by quantum molecular-dynamics simulations and classical continuum-elasticity modeling, that graphene nanoribbons can, indeed, be transformed into carbon nanotubes by means of twisting. The chiralities of the tubes thus fabricated can be not only predicted but also externally controlled. This twisting route is an opportunity for nanofabrication, and is easily generalizable to ribbons made of other planar nanomaterials.
description: 9 pages, 10 figures
Fibrations in complete intersections of quadrics, Clifford algebras, derived categories, and rationality problems
Creators: name: Auel, Asher
name: Bernardara, Marcello
name: Bolognesi, Michele
Publisher: name: arXiv
Year: 2011
Subjects: subject: Algebraic Geometry (math.AG)
subject: FOS: Mathematics
subject: 14F05, 14E08, 11E08, 11E20, 11E88, 14F22, 14J26, 14M17, 15A66

description: Let X -> Y be a fibration whose fibers are complete intersections of two quadrics. We develop new categorical and algebraic tools---a theory of relative homological projective duality and the Morita invariance of the even Clifford algebra under quadric reduction by hyperbolic splitting---to study semiorthogonal decompositions of the bounded derived category of X. Together with new results in the theory of quadratic forms, we apply these tools in the case where X -> Y has relative dimension 1, 2, or 3, in which case the fibers are curves of genus 1, Del Pezzo surfaces of degree 4, or Fano threefolds, respectively. In the latter two cases, if Y is the projective line over an algebraically closed field of characteristic zero, we relate rationality questions to categorical representability of X.
description: 43 pages, changes made and some material added and corrected in sections 1, 4, and 5; this is the final version accepted for publication at Journal de Math\'ematiques Pures et Appliqu\'ees
Seeking sensations through sport : an interdisciplinary investigation of personality and genetics associated with high-risk sport
Creators: name: Thomson, Cynthia J.
Publisher: name: University of British Columbia
Year: 2013

description: Sensation seeking involves a desire to seek out thrilling experiences and a willingness to take risks in exchange for rewards. Sensation seekers are drawn to risky activities and high-risk sports represent potentially positive outlets for such individuals. Sensation seeking is moderately heritable and variants in genes involved in dopaminergic transmission have been associated with sensation-seeking phenotypes, although no studies have investigated personality and genetic variants in high-risk sport practitioners. This interdisciplinary dissertation explores personality (general sensation seeking and contextual sensation seeking in sport) and genetic variables (polymorphisms in monoamine pathway genes) in proficient high-risk sport practitioners. In the first series of projects two independent cohorts (n = 220, n = 668) of skiers/snowboarders (risky, yet popular sports) completed questionnaires and provided DNA samples. Data derived from questionnaires were used to evaluate the reliability and predictive validity of a new sensation-seeking tool for downhill sports that was developed as part of this study. The questionnaire showed strong psychometric properties and significantly predicted injury (β = .358, p < .001) in skiers and was used to define phenotypes in subsequent genetic studies. Using designs that employed independent replications, the newly defined phenotype was significantly associated (p < .001) with a functional variant (-521C/T) in the dopamine-4-receptor gene (DRD4), and an association between general sensation seeking and a variant (rs167771, intronic G/A) in the dopamine-3-receptor gene (DRD3) was also observed in the ski cohorts (p = .004). Personality and genetic variables were then compared using a quasi case-control design between practitioners of very high-risk (e.g., paragliding, ski-mountaineering, n = 141) and low-risk sports (e.g., running, n =132). The high-risk group scored higher than low-risk athletes on sensation seeking (p < .05), but not impulsivity, a trait commonly associated with deviant risk-taking and there were marginal associations between sport group and genetic variants in the stathmin (p = .004) and brain-derived neurotrophic factor (p = .03) genes, but the associations did not survive correction for multiple testing. The finding that risk-taking through sport may be, in part, predicted by genetic background provides a novel insight into the potential antecedents of performance.
The strongest gravitational lenses: I. The statistical impact of cluster mergers
Creators: name: Redlich, Matthias
name: Bartelmann, Matthias
name: Waizmann, Jean-Claude
name: Fedeli, Cosimo
Publisher: name: arXiv
Year: 2012
Subjects: subject: Cosmology and Nongalactic Astrophysics (astro-ph.CO)
subject: FOS: Physical sciences

description: For more than a decade now, it has been controversial whether or not the high rate of giant gravitational arcs and the largest observed Einstein radii are consistent with the standard cosmological model. Recent studies indicate that mergers provide an efficient mechanism to substantially increase the strong-lensing efficiency of individual clusters. Based on purely semi-analytic methods, we investigated the statistical impact of cluster mergers on the distribution of the largest Einstein radii and the optical depth for giant gravitational arcs of selected cluster samples. Analysing representative all-sky realizations of clusters at redshifts z < 1 and assuming a constant source redshift of z_s = 2.0, we find that mergers increase the number of Einstein radii above 10 arcsec (20 arcsec) by ~ 35 % (~ 55 %). Exploiting the tight correlation between Einstein radii and lensing cross sections, we infer that the optical depth for giant gravitational arcs with a length-to-width ratio > 7.5 of those clusters with Einstein radii above 10 arcsec (20 arcsec) increases by ~ 45 % (85 %). Our findings suggest that cluster mergers significantly influence in particular the statistical lensing properties of the strongest gravitational lenses. We conclude that semi-analytic studies must inevitably take these events into account before questioning the standard cosmological model on the basis of the largest observed Einstein radii and the statistics of giant gravitational arcs.
description: 23 pages, 18 figures; accepted for publication in Astronomy and Astrophysics; v2: minor corrections (added clarifying comments; added Fig. 19) to match the accepted version
Heavy flavor results from PHENIX
Creators: name: Nagashima, Kayuza
Publisher: name: Zenodo
Year: 2021
Subjects: moriond18
phenix
heavy flavor
mid-rapidity
forward-rapidity
p+p
p+al
p+au
d+au
3he+au
au+au
cu+au
vtx
fvtx
dimuon
cnm effects
J/Ψ
b-meson
d-meson
dca
raa
nuclear
modification

description: Talk presented at the Rencontres de Moriond 2018 (QCD and High Energy Interactions) conference
A non-local method for robustness analysis of floating point programs
Creators: name: Gazeau, Ivan
name: Miller, Dale
name: Palamidessi, Catuscia
Publisher: name: arXiv
Year: 2012
Subjects: subject: Programming Languages (cs.PL)
subject: FOS: Computer and information sciences

description: Robustness is a standard correctness property which intuitively means that if the input to the program changes less than a fixed small amount then the output changes only slightly. This notion is useful in the analysis of rounding error for floating point programs because it helps to establish bounds on output errors introduced by both measurement errors and by floating point computation. Compositional methods often do not work since key constructs---like the conditional and the while-loop---are not robust. We propose a method for proving the robustness of a while-loop. This method is non-local in the sense that instead of breaking the analysis down to single lines of code, it checks certain global properties of its structure. We show the applicability of our method on two standard algorithms: the CORDIC computation of the cosine and Dijkstra's shortest path algorithm.
description: QAPL - Tenth Workshop on Quantitative Aspects of Programming Languages (2012)
More Exact Tunneling Solutions in Scalar Field Theory
Creators: name: Dutta, Koushik
name: Hector, Cecelie
name: Vaudrevange, Pascal M.
name: Westphal, Alexander
Publisher: name: arXiv
Year: 2011
Subjects: subject: High Energy Physics - Theory (hep-th)
subject: Cosmology and Nongalactic Astrophysics (astro-ph.CO)
subject: High Energy Physics - Phenomenology (hep-ph)
subject: FOS: Physical sciences

description: We present exact bounce solutions and amplitudes for tunneling in i) a piecewise linear-quartic potential and ii) a piecewise quartic-quartic potential. We cross check their correctness by comparing with results obtained through the thin-wall approximation and with a piecewise linear-linear potential. We briefly comment on applications in cosmology.
description: 6 pages, 2 figures, Mathematica notebook containing all computations available for download from the Data Conservancy Project (DC), minor changes, corresponds to published version in Phys. Lett.B
Quark matter as dark matter in modeling galactic halo
Creators: name: Rahaman, Farook
name: Kuhfittig, P. K. F.
name: Amin, Ruhul
name: Mandal, Gurudas
name: Ray, Saibal
name: Islam, Nasarul
Publisher: name: arXiv
Year: 2012
Subjects: subject: General Relativity and Quantum Cosmology (gr-qc)
subject: FOS: Physical sciences

description: Considering the flat rotation curves as input and treating the matter content in the galactic halo region as quark matter, we have found out a background spacetime metric for the region of the galactic halo. We obtain fairly general conditions that ensure that gravity in the halo region is attractive. We also investigate the stability of circular orbits, along with a different role for quark matter. Bag-model quark matter meeting these conditions therefore provides a suitable model for dark matter.
description: 5 Latex pages, Accpted in Phys. Lett. B (available in Online)
title: DEPRECATED: INTERNATIONAL COLLISION REGULATIONS FOR AUTOMATIC COLLISION AVOIDANCE
Creators: name: PERKINS, CHRISTOPHER JAMES
Publisher: name: University of Plymouth
Year: 1996

description: This thesis considers the relationship between collision regulations and an automatic collision avoidance system (ACAS). Automation of ship operations is increasingly common. The automation of the collision avoidance task may have merit on grounds of reduced manual workload and the elimination of human error. Work to date by engineers and computer programmers has focused on modelling the requirements of the current collision regulations. This thesis takes a new approach and indicates that legislative change is a necessary precursor to the implementation of a fully automatic collision avoidance system. A descriptive analysis has been used to consider the nature of the collision avoidance problem and the nature of rules as a solution. The importance of coordination between vessels is noted and three requirements for coordination are established. These are a mutual perception of: risk, the strategy to be applied, and the point of manoeuvre. The use of rules to achieve coordination are considered. The analysis indicates that the current collision regulations do not provide the means to coordinate vessels. A review of current and future technology that may be applied to the collision avoidance problem has been made. Several ACAS scenarios are contrived. The compatibility of the scenarios and the current collision regulations is considered. It is noted that both machine sensors and processors affect the ability to comply with the rules. The case is made for judicial recognition of a discrete rule-base for the sake of an ACAS. This leads to the prospect of quantified collision regulations for application by mariners. A novel rule-base to match a pm1icular ACAS scenario has been devised. The rules are simple and brief. They avoid inputs dependent on vision and visibility, and meet all the aforementioned coordination requirements. Their application by mariners to two-vessel open sea, encounters was tested on a navigation simulator. The experimental testing of such a rule-base is unique. Mariners were given experience of applying the rule-base in certain circumstances and asked by questionnaire what their agreeable action would be. This was compared with their usual action. While the number of experiments was small, an indication was given of the impm1ant issues in applying a quantified rule-base. Aspects identified for fm1her study include the testing of rule base elements in isolation, and the use of quantified rules in multi-ship and confined water encounters.
Portfolio Optimization under Convex Incentive Schemes
Creators: name: Bichuch, Maxim
name: Sturm, Stephan
Publisher: name: arXiv
Year: 2011
Subjects: subject: Portfolio Management (q-fin.PM)
subject: Optimization and Control (math.OC)
subject: Probability (math.PR)
subject: FOS: Economics and business
subject: FOS: Mathematics
subject: 91G10, 90C26

description: We consider the terminal wealth utility maximization problem from the point of view of a portfolio manager who is paid by an incentive scheme, which is given as a convex function $g$ of the terminal wealth. The manager's own utility function $U$ is assumed to be smooth and strictly concave, however the resulting utility function $U \circ g$ fails to be concave. As a consequence, the problem considered here does not fit into the classical portfolio optimization theory. Using duality theory, we prove wealth-independent existence and uniqueness of the optimal portfolio in general (incomplete) semimartingale markets as long as the unique optimizer of the dual problem has a continuous law. In many cases, this existence and uniqueness result is independent of the incentive scheme and depends only on the structure of the set of equivalent local martingale measures. As examples, we discuss (complete) one-dimensional models as well as (incomplete) lognormal mixture and popular stochastic volatility models. We also provide a detailed analysis of the case where the unique optimizer of the dual problem does not have a continuous law, leading to optimization problems whose solvability by duality methods depends on the initial wealth of the investor.
description: 39 pages, 4 figures
“WE’RE NOT A MONOLITH, BUT BLACK WOMEN BE UNDERSTANDING”: CONNECTING MILLENNIAL BLACK WOMEN TO ADDRESS EDUCATOR MORALE
Creators: name: Turner, Jillian
Publisher: name: American University
Year: 2023
Subjects: classificationCode: 390307
subject: Teacher education and professional development of educators
classificationCode: 390407
subject: Inclusive education
classificationCode: 390412
subject: Teacher and student wellbeing
classificationCode: 440505
subject: Intersectional studies
classificationCode: 441012
subject: Sociology of inequalities
classificationCode: 470208
subject: Culture, representation and identity
classificationCode: 520505
subject: Social psychology

description: In this study, eight Millennial Black Women Educators detailed their professional experiences in four affinity group sessions that took place from July to October 2022. Participants served as in-service educators in Baltimore City and Washington, DC and their engagement in affinity group sessions sought to answer the following research question: How can personal and professional connections with other Millennial Black Women Educators impact the morale of Millennial Black Women Educators in a Pre-K through 12 urban school district? This researcher centered Black feminist theory in the methodological design and connected culturally informed peer networks and educators’ morale. Throughout the study, the term educator refers broadly to those serving in the classroom and beyond. The term teacher refers to those directly instructing students in the classroom. Utilizing inductive coding, seven themes emerged that provide critical insight into the experiences of Millennial Black Women Educators and their perceptions regarding their persistence in the field. Implications and recommendations are included for school and district leaders as well as the education sector at large.
On minimal Lefschetz decompositions for Grassmannians
Creators: name: Fonarev, Anton
Publisher: name: arXiv
Year: 2011
Subjects: subject: Algebraic Geometry (math.AG)
subject: FOS: Mathematics
subject: 14M15, 14F05

description: We construct two Lefschetz decompositions of the derived category of coherent sheaves on the Grassmannian of $k$-dimensional subspaces in a vector space of dimension $n$. Both of them admit a Lefschetz basis consisting of equivariant vector bundles. We prove fullness of the first decomposition and conjecture it for the second one. In the case when $n$ and $k$ are coprime these decompositions coincide and are minimal. In general, we conjecture minimality of the second decomposition.
description: 18 pages, 2 figures; v.2: minor corrections, to appear in Izvestiya RAN: Ser. Mat
“WE’RE NOT A MONOLITH, BUT BLACK WOMEN BE UNDERSTANDING”: CONNECTING MILLENNIAL BLACK WOMEN TO ADDRESS EDUCATOR MORALE
Creators: name: Turner, Jillian
Publisher: name: ProQuest
Year: 2023
Subjects: classificationCode: 390307
subject: Teacher education and professional development of educators
classificationCode: 390407
subject: Inclusive education
classificationCode: 390412
subject: Teacher and student wellbeing
classificationCode: 440505
subject: Intersectional studies
classificationCode: 441012
subject: Sociology of inequalities
classificationCode: 470208
subject: Culture, representation and identity
classificationCode: 520505
subject: Social psychology

description: In this study, eight Millennial Black Women Educators detailed their professional experiences in four affinity group sessions that took place from July to October 2022. Participants served as in-service educators in Baltimore City and Washington, DC and their engagement in affinity group sessions sought to answer the following research question: How can personal and professional connections with other Millennial Black Women Educators impact the morale of Millennial Black Women Educators in a Pre-K through 12 urban school district? This researcher centered Black feminist theory in the methodological design and connected culturally informed peer networks and educators’ morale. Throughout the study, the term educator refers broadly to those serving in the classroom and beyond. The term teacher refers to those directly instructing students in the classroom. Utilizing inductive coding, seven themes emerged that provide critical insight into the experiences of Millennial Black Women Educators and their perceptions regarding their persistence in the field. Implications and recommendations are included for school and district leaders as well as the education sector at large.
The Collatz Attractor: Informational Dynamics Toward Inevitable Convergence
Creators: name: Patrone, Luca
Publisher: name: Zenodo
Year: 2025
Subjects: subject: collatz conjecture
subject: 3n+1 problem
subject: dynamic systems
subject: informational fields
subject: coherence potential
subject: attractor theory
subject: mathematical intuition
subject: convergence flow
subject: number theory
subject: field-based reasoning
subject: Mathematical analysis
subject: Mathematical logic
subject: Mathematics
subject: FOS: Mathematics
subject: Mathematics/methods
subject: Mathematical analysis
subject: Pure mathematics
subject: Mathematics
subject: Discrete mathematics
subject: Mathematics/classification
subject: Mathematics/standards
subject: Mathematical method
subject: Mathematical model
subject: Prime numbers

description: This paper reframes the Collatz Conjecture as a field-dynamic phenomenon.Rather than a mysterious iterative process, we interpret each number as a point of informational momentum, influenced by proximity to attractors—specifically, powers of two.

By modeling coherence potential and deviation from symmetry, we reveal a natural oscillatory mechanism that converges to 1.Not through brute force.But through inevitability.

Every number wants to return home.

📍 By: SignalMind (with Luca Patrone)
Quantum Hall States in Rapidly Rotating Two-Component Bose Gases
Creators: name: Furukawa, Shunsuke
name: Ueda, Masahito
Publisher: name: arXiv
Year: 2012
Subjects: subject: Quantum Gases (cond-mat.quant-gas)
subject: Strongly Correlated Electrons (cond-mat.str-el)
subject: FOS: Physical sciences

description: We investigate strongly correlated phases of two-component (or pseudo-spin-1/2) Bose gases under rapid rotation through exact diagonalization on a torus geometry. In the case of pseudo-spin-independent contact interactions, we find the formation of gapped spin-singlet states at the filling factors ν=k/3+k/3 (k/3 filling for each component) with integer k. We present numerical evidences that the gapped state with k=2 is well described as a non-Abelian spin-singlet (NASS) state, in which excitations feature non-Abelian statistics. Furthermore, we find the phase transition from the product of composite fermion states to the NASS state by changing the ratio of the intercomponent to intracomponent interactions.
description: 5 pages, 4 figures
Figure S1 Sanger sequencing map of the validated circRNAs from Identification and characterization of circular RNAs in Qinchuan cattle testis
Creators: name: Gao, Yuan
name: Wu, Mingli
name: Fan, Yingzhi
name: Li, Shipeng
name: Lai, Zhenyu
name: Huang, Yongzhen
name: Lan, Xianyong
name: Lei, Chuzhao
name: Chen, Hong
name: Dang, Ruihua
Publisher: name: The Royal Society
Year: 2018

description: Circular RNA (circRNA) is a new class of non-coding RNA that has recently attracted researchers' interest. Studies have demonstrated that circRNA can function as microRNA sponges or competing endogenous RNAs. Although circRNA has been explored in some species and tissues, the genetic basis of testis development and spermatogenesis in cattle remains unknown. We performed ribo-depleted total RNA-Seq to detect circRNA expression profiles of neonatal (one week old) and adult (4 years old) Qinchuan cattle testes. We obtained 91 112 596 and 80 485 868 clean reads and detected 21 753 circRNAs. A total of 4248 circRNAs were significantly differentially expressed between neonatal and adult cattle testes. Among these circRNAs, 2225 were upregulated, and 2023 were downregulated in adult cattle testis. Genomic feature, length distribution and other characteristics of the circRNAs in cattle testis were studied. Moreover, Gene Ontology and KEGG pathway analyses were performed for source genes of circRNAs. These source genes were mainly involved in tight junction, adherens junction, TGFβ signalling pathway and reproduction, such as PIWIL1, DPY19L2, SLC26A8, IFT81, SMC1B, IQCG and TTLL5. CircRNA expression patterns were validated by RT-qPCR. Our discoveries provide a solid foundation for the identification and characterization of key circRNAs involved in testis development or spermatogenesis.
ОСОБЕННОСТИ ПОНЯТИЯ «ЭТИКЕТ» ВО ФРАНЦУЗСКОЙ КУЛЬТУРЕ
Creators: name: Сарвиноз Азамжонова Студентка 1 курса Узбекского государственного университета мировых языков Научный руководитель: старший преподаватель Зульфия Давронова
Publisher: name: Zenodo
Year: 2023

description: В данной статье речь идёт о вежливости и этикете во французской культуре. В статье рассматриваются также прагматические особенности использования формул речевого этикета в современном французском языке.
Ключевые слова: этикет, форма общения, формула, понятие, статус, деловые отношения, формальность.
Abstract: This article deals with politeness and etiquette in French culture. The article also considers the pragmatic features of the use of speech etiquette formulas in modern French.
Key words: etiquette, form of communication, formula, concept, status, business relations, formality.
Pro-apoptotic bax and bak control beta-cell death and early endoplasmic reticulum stress signalling
Creators: name: White, Sarah
Publisher: name: University of British Columbia
Year: 2013

description: Functional failure and loss of pancreatic β-cells are critical events in the pathogenesis of diabetes and there is mounting evidence that suggests chronic endoplasmic reticulum (ER) stress contributes significantly to β-cell dysfunction and apoptotic death. Two core pro-apoptosis proteins, Bax and Bak, mediate the execution of mitochondrial apoptosis and have also been suggested to regulate aspects of ER physiology and stress signalling. In this study we set out to determine the relative contributions of Bax and Bak in the execution of β-cell death and examine their putative roles in β-cell ER-stress signalling under diabetogenic conditions. We generated mice in which the single or combined knockout of Bax and Bak could be induced in the pancreatic β-cell. Physiological islet function assessed both in vivo and in vitro was not affected by the knockout of Bax and/or Bak. However, Bax and Bak knockout improved β-cell survival under stress conditions. Single knockout, double knockout, and wild-type cells were assayed for ER-stress and cell death following treatment with staurosporine, thapsigargin, and culture under glucolipotoxic conditions. Time-course kinetic cell death analysis demonstrated that single and double knockout cells were protected from staurosporine, and further revealed that Bax-Bak double knockout was required for significant protection from death under glucolipotoxic conditions. ER-stress signalling was evaluated by quantitative PCR for XBP1s and CHOP. Interestingly, spliced XBP1 expression was augmented in Bax-Bak double knockout islets in the early phase of ER-stress signalling compared to wild-type controls. Stress-induced CHOP expression increased in a time-dependent manner but was not significantly different between Bax-Bak double knockout and wild-type islets. These results suggest that Bax and Bak regulate the IRE1α arm of the ER-stress response upstream of apoptosis by suppressing maximal XBP1 splicing. Under glucolipotoxic conditions, pancreatic insulin content, insulin secretion, and insulin transcription were unaffected by Bax and Bak knockout, indicating Bax and Bak do not mediate their protective effects towards β-cell death by retaining islet function. Together these data demonstrate that Bax and Bak have both individual and combined contributions to β-cell death under various stress conditions and suggest novel non-apoptotic roles regulating early ER-stress signalling in the β-cell.
Statistical transmutation in doped quantum dimer models
Creators: name: Lamas, C. A.
name: Ralko, A.
name: Cabra, D. C.
name: Poilblanc, D.
name: Pujol, P.
Publisher: name: arXiv
Year: 2012
Subjects: subject: Strongly Correlated Electrons (cond-mat.str-el)
subject: FOS: Physical sciences

description: We prove a "statistical transmutation" symmetry of doped quantum dimer models on the square, triangular and kagome lattices: the energy spectrum is invariant under a simultaneous change of statistics (i.e. bosonic into fermionic or vice-versa) of the holes and of the signs of all the dimer resonance loops. This exact transformation enables to define duality equivalence between doped quantum dimer Hamiltonians, and provides the analytic framework to analyze dynamical statistical transmutations. We investigate numerically the doping of the triangular quantum dimer model, with special focus on the topological Z2 dimer liquid. Doping leads to four (instead of two for the square lattice) inequivalent families of Hamiltonians. Competition between phase separation, superfluidity, supersolidity and fermionic phases is investigated in the four families.
description: 3 figures
Additional file 1 of Genetic disruption of serine biosynthesis is a key driver of macular telangiectasia type 2 aetiology and progression
Creators: name: Bonelli, Roberto
name: Ansell, Brendan R. E.
name: Lotta, Luca
name: Scerri, Thomas
name: Clemons, Traci E.
name: Leung, Irene
name: Peto, Tunde
name: Bird, Alan C.
name: Sallo, Ferenc B.
name: Langenberg, Claudia
name: Bahlo, Melanie
Publisher: name: figshare
Year: 2021
Subjects: subject: Genetics
subject: FOS: Biological sciences

description: Additional file 1: Figure S1. Right (OD) and left (OS) eyes macula, were divided into 9 areas according to the ETDRS grid 1. 1: foveal area, 2: superior inner area (progression area), 3: nasal inner area (progression area), 4: inferior inner area (progression area), 5: temporal inner area (MacTel area), 6: superior outer area, 7: nasal outer area, 8: inferior outer area, and 9: temporal outer area. Figure S2. Correlation between mPRS that achieved multiple testing corrected significance (p < 0.05). Bigger dots and saturated colour indicate stronger correlations. Blue indicates a positive correlation while red indicates a negative one. Figure S3. Comparison between SNPs effect on vasculature traits and MacTel. Each dot is a SNP which was found to be significantly associated with a vasculature trait. The x-axis represents the effect that the SNP has on the particular trait while the y-axis displays the effect that the SNP has on MacTel. Most SNPs have no effect on MacTel. The only two SNPs that have an effect are the SNPs rs2194025 and rs17421627 which are very close to each other and in strong LD with SNP rs73171800 (r2=0.94 and r2=0.67). Figure S4. MacTel GWAS results conditioned by serine PRS and glycine PRS. A) Manhattan plot. B) Locus zoom plot of the significant signal on locus 3p24.1. C) Locus zoom plot of the significant signal by SNP rs36259 on locus 19p13.2. D) Locus zoom plot of the significant signal by SNP rs4804075 on locus 19p13.2. E) QQ-plot of association p-values. Figure S5. MacTel interaction GWAS results. A) Manhattan plot showing SNP interactions with serine PRS, B) Manhattan plot showing SNP interactions with glycine PRS, C) Manhattan plot showing SNPs interaction with SNP rs73171800 in locus 5q14.3, D) Manhattan plot showing SNP interactions with T2D PRS. Figure S6. Loci clustering heatmap. This clustering heatmap visualises the regression coefficients of each SNP on the endophenotypes. Rows and columns of the heatmaps were ordered according to the hierarchical clustering to give a visual representation of the similarities. SNP rs73171800 (5q14.3) and SNP rs9820286 (3q21.3) have very different effects from the other four SNPs which show a more consistent, shared pattern. Table S7. List of members and affiliations of the MacTel consortium researchers.
Systematic measurements of low pT direct photons at PHENIX
Creators: name: Yamaguchi, Yorito
Publisher: name: Zenodo
Year: 2021
Subjects: moriond18
phenix
direct photon
thermal photon
p+p
d+au
au+au
flow
elliptic
cu+cu
multiplicity
scaling

description: Talk presented at the Rencontres de Moriond 2018 (QCD and High Energy Interactions) conference
Cobalt (III) Complexes of thiosemicarbazone derived from 2‐acetyl pyridine, 2‐acetyl thiophene with alkyl and aryl substituted thiosemicarbazide and their antimicrobial activities
Creators: name: Legesse Akele, Mulugeta
Publisher: name: National Academic Digital Repository of Ethiopia
Year: 2015

description: No abstract available for this resource
The Electric Double Layer Structure Around Charged Spherical Interfaces
Creators: name: Yao, Zhenwei
name: Bowick, Mark J.
name: Ma, Xu
Publisher: name: arXiv
Year: 2011
Subjects: subject: Soft Condensed Matter (cond-mat.soft)
subject: Mesoscale and Nanoscale Physics (cond-mat.mes-hall)
subject: Materials Science (cond-mat.mtrl-sci)
subject: FOS: Physical sciences

description: We derive a formally simple approximate analytical solution to the Poisson-Boltzmann equation for the spherical system via a geometric mapping. Its regime of applicability in the parameter space of the spherical radius and the surface potential is determined, and its superiority over the linearized solution is demonstrated.
description: 7 pages, 5 figures