cometadata/datacite-rtg-text-other-reclassification-records huggingface dataset:
Kitaev honeycomb antiferromagnet in a field: quantum phase diagram for general spin
Creators: name: Jahromi, Saeed S.
name: Hörmann, Max
name: Adelhardt, Patrick
name: Fey, Sebastian
name: Karamnejad, Hooman
name: Orus, Roman
name: Schmidt, Kai Phillip
Publisher: name: arXiv
Year: 2021
Subjects: subject: Strongly Correlated Electrons (cond-mat.str-el)
subject: FOS: Physical sciences

description: We combine tensor-network approaches and high-order linked-cluster expansions to investigate the quantum phase diagram of the antiferromagnetic Kitaev's honeycomb model in a magnetic field for general spin values. For the pure Kitaev model, tensor network calculations confirm the absence of fluxes and spin-spin correlations beyond nearest neighbor in the ground state, but signal a breaking of the discrete orientational symmetry for $S\in\{1,3/2,2\}$ inline with the semiclassical limit. An intermediate region between Kitaev phases and the high-field polarized phase is demonstrated for all considered spin values. In this intermediate region the tensor network results display a sequence of potential phases whose number increases with the spin value. Each of these can be characterized by distinct local magnetization patterns while the total magnetization increases smoothly as a function of the field. The analysis of the high-field zero-momentum gap and the associated spectral weight of the polarized phase for general spin $S$ obtained by linked-cluster expansions is consistent with an unconventional quantum critical breakdown of the high-field polarized phase in accordance with the presence of exotic physics at intermediate Kitaev couplings.
description: 23 pages, 15 figures
The ruling party and the transition to democracy : the case of the Chinese Nationalist Party (The KMT) on Taiwan
Creators: name: Hao, Paul W.
Publisher: name: University of British Columbia
Year: 2009

description: The Kuomintang (KMT, the Nationalist Party) has been a major agent of Taiwan's transition to democracy. It is rare that a ruling party initiates the transition to democracy from within an authoritarian regime, therefore it is interesting to explore how and why the KMT has played a positive role in Taiwan's transition to democracy. A historical approach is employed to analyze the role of the KMT in Taiwan's transition to democracy and to explain the reasons that led the KMT to play such a role. The thesis demonstrates that socioeconomic, external and other "ecological" factors have had only an indirect impact on Taiwan's transition to democracy. It finds that the KMT made several crucial decisions that started Taiwan down the path to democracy. The KMT's ability to play a positive role is explained by the party's own nature and characteristics. Firstly, the KMT's ideology guided it to play a positive role in Taiwan's gradual transition to democracy, because Sun Yat-sen's Three Principles of the People are fundamentally democratic, although tutelary and pragmatic in terms of the means to achieve the democratic end. Secondly, the KMT was able to play a positive role in Taiwan's transition to democracy because the top leaders of the party generally agreed on the need for change, although they had different opinions about the timing and pace of change. Chiang Ching-kuo and a group of reformers contributed most to the establishment of democratic values and procedures in the KMT party-state. The co-existence of conservative and reformist factions in the party balanced the needs for stability and change, and resulted in a gradual process of transition. Thirdly, the KMT's recruitment and organization helped the party to play a positive role in the transition to democracy. Through Taiwanization and technocratization, the KMT made itself more representative and capable. The KMT has a huge and well-coordinated organization which was used mainly as a tool of social control in the earlier authoritarian period and then as a tool of electoral mobilization in the later period on Taiwan. The adaptability and strength of the KMT contributed to the party's confidence in initiating and leading the transition to democracy on Taiwan.
Effect of field dependent core size on reversible magnetization of high-$κ$ superconductors
Creators: name: Kogan, V. G.
name: Prozorov, R.
name: Bud'ko, S. L.
name: Canfield, P. C.
name: Thompson, J. R.
name: Karpinski, J.
name: Zhigadlo, N. D.
name: Miranović, P.
Publisher: name: arXiv
Year: 2006
Subjects: subject: Superconductivity (cond-mat.supr-con)
subject: FOS: Physical sciences

description: The field dependence of the vortex core size $ξ(B)$ is incorporated in the London model, in order to describe reversible magnetization $M(B,T)$ for a number of materials with large Ginzburg-Landau parameter $κ$. The dependence $ξ(B)$ is directly related to deviations in $M(\ln B)$ from linear behavior prescribed by the standard London model. A simple method to extract $ξ(B)$ from the magnetization data is proposed. For most materials examined, $ξ(B)$ so obtained decreases with increasing field and is in qualitative agreement both with behavior extracted from $μ$SR and small angle neutron scattering data and with that predicted theoretically.
สภาพและปัญหาการบริหารจัดการระบบประกันคุณภาพการศึกษาโรงเรียนพระปริยัติธรรม แผนกสามัญศึกษา
Creators: name: สุพรรณ์ ยากองโค
Publisher: name: มหาวิทยาลัยราชภัฏเชียงราย
Year: 2555

description: 1, 6, วารสารการวิจัยกาสะลองคำ มหาวิทยาลัยราชภัฏเชียงราย
Quantum ergodicity in mixed and KAM Hamiltonian systems
Creators: name: Gomes, Sean P
Publisher: name: The Australian National University
Year: 2017
Subjects: quantum ergodicity
microlocal analysis
semiclassical analysis
partial differential equations
spectral theory
KAM Hamiltonian systems

description: In this thesis, we investigate quantum ergodicity for two classes of Hamiltonian systems satisfying intermediate dynamical hypotheses between the well understood extremes of ergodic flow and quantum completely integrable flow. These two classes are mixed Hamiltonian systems and KAM Hamiltonian systems. Hamiltonian systems with mixed phase space decompose into finitely many invariant subsets, only some of which are of ergodic character. It has been conjectured by Percival that the eigenfunctions of the quantisation of this system decompose into associated families of analogous character. The first project in this thesis proves a weak form of this conjecture for a class of dynamical billiards, namely the mushroom billiards of Bunimovich for a full measure subset of a shape parameter t in (0,2]. KAM Hamiltonian systems arise as perturbations of completely integrable Hamiltonian systems. The dynamics of these systems are well understood and have near-integrable character. The classical-quantum correspondence suggests that the quantisation of KAM systems will not have quantum ergodic character. The second project in this thesis proves an initial negative quantum ergodicity result for a class of positive Gevrey perturbations of a Gevrey Hamiltonian that satisfy a mild slow torus condition.
Limits of Multilayer Diffusion Network Inference in Social Media Research
Creators: name: Xia, Yan
name: Chen, Ted Hsuan Yun
name: Kivelä, Mikko
Publisher: name: arXiv
Year: 2021
Subjects: subject: Social and Information Networks (cs.SI)
subject: FOS: Computer and information sciences

description: Information on social media spreads through an underlying diffusion network that connects people of common interests and opinions. This diffusion network often comprises multiple layers, each capturing the spreading dynamics of a certain type of information characterized by, for example, topic, language, or attitude. Researchers have previously proposed methods to infer these underlying multilayer diffusion networks from observed spreading patterns, but little is known about how well these methods perform across the range of realistic spreading data. In this paper, we conduct an extensive series of synthetic data experiments to systematically analyze the performance of the multilayer diffusion network inference framework, under varied network structure (e.g. density, number of layers) and information diffusion settings (e.g. cascade size, layer mixing) that are designed to mimic real-world spreading on social media. Our results show extreme performance variation of the inference framework: notably, it achieves much higher accuracy when inferring a denser diffusion network, while it fails to decompose the diffusion network correctly when most cascades in the data reach a limited audience. In demonstrating the conditions under which the inference accuracy is extremely low, our paper highlights the need to carefully evaluate the applicability of the inference before running it on real data. Practically, our results serve as a reference for this evaluation, and our publicly available implementation, which outperforms previous implementations in accuracy, supports further testing under personalized settings.
description: Accepted to ICWSM 2022
State complicity in violence against Ahmadiyah and Shi'a communities in Indonesia
Creators: name: Suryana, A'an
Publisher: name: Canberra, ACT : The Australian National University
Year: 2017
Subjects: Ahmadiyah (Ahmadiyya)
Shi'a
Communal Violence
Vigilante
Indonesian state
Post-Soeharto

description: This thesis looks at the role of state officials in handling incidents of mass violence against Ahmadiyah and Shi’a communities in Indonesia. Scholars often criticize the post-Soeharto democratic Indonesian governments as having been incapable of addressing violence against religious minorities. This thesis argues that the violence stemmed in part from the state officials’ close connection with vigilante groups, and a general tendency for the authorities to forge mutual and material interests with such groups. Vigilante groups were able to perpetrate violence against the minority congregations with a significant degree of impunity. While the Indonesian state has become far more democratic, accountable and decentralized since 1998, the violence against Ahmadiyah and Shi’a communities shows a state that is still unwilling in assisting or allowing minority groups to practice their religion. The research undertaken for this thesis draws upon a seven-month period of ethnographic fieldwork in the communities of West Java and Madura Island. Research material includes in-depth interviews with community and religious leaders, state officials and security forces, and other prominent politicians. Studying state practices on the ground proved important, because it was at the local level where practices were most felt by citizens, and the manifestation of the state was more apparent.
Superconductivity suppression in disordered films: Interplay of two-dimensional diffusion and three-dimensional ballistics
Creators: name: Antonenko, Daniil S.
name: Skvortsov, Mikhail A.
Publisher: name: arXiv
Year: 2020
Subjects: subject: Superconductivity (cond-mat.supr-con)
subject: Disordered Systems and Neural Networks (cond-mat.dis-nn)
subject: Mesoscale and Nanoscale Physics (cond-mat.mes-hall)
subject: Materials Science (cond-mat.mtrl-sci)
subject: FOS: Physical sciences

description: Suppression of the critical temperature in homogeneously disordered superconducting films is a consequence of the disorder-induced enhancement of Coulomb repulsion. We demonstrate that for the majority of thin films studied now this effect cannot be completely explained in the assumption of two-dimensional diffusive nature of electrons motion. The main contribution to the $T_c$ suppression arises from the correction to the electron-electron interaction constant coming from small scales of the order of the Fermi wavelength that leads to the critical temperature shift $δT_c/T_{c0} \sim - 1/k_Fl$, where $k_F$ is the Fermi momentum and $l$ is the mean free path. Thus almost for all superconducting films that follow the fermionic scenario of $T_c$ suppression with decreasing the film thickness, this effect is caused by the proximity to the three-dimensional Anderson localization threshold and is controlled by the parameter $k_F l$ rather than the sheet resistance of the film.
description: 13 pages, 9 figures
The quest for factors influencing worker productivity in videoconferencing meetings: a case study of a professional services firm
Creators: name: Kim, Kyu Sik
Publisher: name: The Australian National University
Year: 2015

description: Professional service firms are exploring ways to cut operating costs by investing in information technologies (IT). Among many IT solutions, videoconferencing systems (VCSs) have been widely adopted. However, within business settings and the information system (IS) literature inconsistent evidence exists in relation to the benefits of VCSs. Evidence from previous studies suggests that, if used properly, VCSs can enhance workplace communications and the quality of decision making. However, other studies have found no evidence to suggest that VCSs increase the performance of workers. To date, scant research has investigated the influence of work-related factors and VCSs on the productivity of workers. To fill this gap, this study conducted field research to examine the factors influencing worker productivity when workers use VCSs for different types of business tasks. Data was collected from archival datasets, interviews and a focus group of employees of a professional services firm in Australia. While prior research has shown that IT, as a whole, has a positive influence on productivity at a group or firm level, the findings of this research suggest that this relationship becomes more complicated when the problem is investigated at a more granular level. Specifically, it appears that regardless of the type of task conducted by workers, daily worker productivity always increases when workers use VCSs. However, the use of VCSs may increase or decrease workers' task productivity. The direction of the effect appears to depend on a variety of factors, including the characteristics of the task, the technology, the worker and the social and work environment.
Local Lorentz Transformation and Mass-Energy Relation of Spinor
Creators: name: Gu, Ying-Qiu
Publisher: name: arXiv
Year: 2007
Subjects: subject: High Energy Physics - Theory (hep-th)
subject: FOS: Physical sciences

description: In this paper, we strictly establish classical concepts and relations according to a Dirac equation with scalar, vector and nonlinear potentials. To calculate classical parameters for moving spinor, the local Lorentz transformations for parameters are derived. The calculation shows that different kinds of potentials result in different energy-speed relations, and the energy-speed relations for these potentials are derived in detail. The usual mass-energy relation $E = mc^2$ holds only for the linear spinor. The energy-speed relations can be used as fingerprints to identify the interactive potentials of a particle by elaborated experiments. The analysis and results of this paper can also provide some natural explanations for the foundation of quantum mechanics, and clarify some long-standing puzzles in the theory.
description: 14 pages, no figure
Almost Everything About the Unitary Almost Mathieu Operator
Creators: name: Cedzich, Christopher
name: Fillman, Jake
name: Ong, Darren C.
Publisher: name: arXiv
Year: 2021
Subjects: subject: Spectral Theory (math.SP)
subject: Mathematical Physics (math-ph)
subject: Functional Analysis (math.FA)
subject: Quantum Physics (quant-ph)
subject: FOS: Mathematics
subject: FOS: Physical sciences

description: We introduce a unitary almost-Mathieu operator, which is obtained from a two-dimensional quantum walk in a uniform magnetic field. We exhibit a version of Aubry--André duality for this model, which partitions the parameter space into three regions: a supercritical region and a subcritical region that are dual to one another, and a critical regime that is self-dual. In each parameter region, we characterize the cocycle dynamics of the transfer matrix cocycle generated by the associated generalized eigenvalue equation. In particular, we show that supercritical, critical, and subcritical behavior all occur in this model. Using Avila's global theory of one-frequency cocycles, we exactly compute the Lyapunov exponent on the spectrum in terms of the given parameters. We also characterize the spectral type for each value of the coupling constant, almost every frequency, and almost every phase. Namely, we show that for almost every frequency and every phase the spectral type is purely absolutely continuous in the subcritical region, pure point in the supercritical region, and purely singular continuous in the critical region. In some parameter regions, we refine the almost-sure results. In the critical case for instance, we show that the spectrum is a Cantor set of zero Lebesgue measure for arbitrary irrational frequency and that the spectrum is purely singular continuous for all but countably many phases.
description: 41 pages, 5 figures, to appear in Commun. Math. Phys
Phase structure of lattice QCD with two flavors of Wilson quarks at finite temperature and chemical potential
Creators: name: Wu, Liang-Kai
name: Luo, Xiang-Qian
name: Chen, He-Sheng
Publisher: name: arXiv
Year: 2006
Subjects: subject: High Energy Physics - Lattice (hep-lat)
subject: FOS: Physical sciences

description: We present results for phase structure of lattice QCD with two degenerate flavors ($N_f=2$) of Wilson quarks at finite temperature $T$ and small baryon chemical potential $μ_B$. Using the imaginary chemical potential for which the fermion determinant is positive, we perform simulations at points where the ratios of pseudo-scalar meson mass to the vector meson mass $m_π/m_ρ$ are between $0.943(3)$ and $0.899(4)$ as well as in the quenched limit. By analytic continuation to real quark chemical potential $μ$, we obtain the transition temperature as a function of small $μ_B$. We attempt to determine the nature of transition at imaginary chemical potential by histogram, MC history, and finite size scaling. In the infinite heavy quark limit, the transition is of first order. At intermediate values of quark mass $m_q$ corresponding to the ratio of $m_π/m_ρ$ in the range from $0.943(3)$ to $0.899(4)$ at $aμ_I=0.24$, the MC simulations show absence of phase transition.
description: 10 pages, 17 figures;16 figures;9 pages,10 figures;10 pages,11 figures
Tackling the phase problem of diffraction for retrieval of photonic structures formed in nanocomposite materials
Creators: name: Fally, M.
name: Tomita, Y.
name: Fimia, A.
name: Madrigal, R. F.
name: Guo, J.
name: Kohlbrecher, J.
name: Klepp, J.
Publisher: name: arXiv
Year: 2020
Subjects: subject: Optics (physics.optics)
subject: FOS: Physical sciences

description: We experimentally demonstrate how to solve the phase problem of diffraction using multi-wave interference with standard diffraction experimental setups without the need for taking any auxiliary data. In particular, we show that the phases of the Fourier components of a periodic structure can be fully recovered by deliberately choosing a probe wavelength of the diffracting radiation much smaller than the lattice constant. In the course of the demonstration, we accurately determine the refractive index profile of nanocomposite phase gratings by light and neutron diffraction measurements.
Lord Amherst's Embassy to the Jiaqing Emperor, 1816
Creators: name: Stevenson, Caroline Moira
Publisher: name: Canberra, ACT : The Australian National University
Year: 2018
Subjects: Amherst Embassy
Macartney Embassy
William Pitt Amherst
George Thomas Staunton
Henry Ellis
Anglo-Chinese Diplomatic relations
Kowtow
Jiaqing Emperor
British cultural relations with China
John Barrow
Canton trade
HMS Alceste
Captain Basil Hall
Rev. Dr Robert Morrison

description: The Amherst Embassy to the Qing court in 1816 remains little researched in comparison with the earlier Macartney Embassy (1792-94). This dissertation offers the first comprehensive account of the Embassy and reassesses its importance for Anglo-Chinese relations in the period before the First Opium War of 1839-42. It addresses why the British thought the Amherst Embassy would succeed where the Macartney Embassy had failed and how the latter’s legacy led the British to misjudge the response of the Jiaqing court. Largely ignored primary sources, in addition to the East India Company records, have provided important new insights into British motivations for dispatching the Embassy and for assessing Amherst’s role as the leader of the mission. The popular view that Amherst was indecisive and overly influenced by the Second Commissioner, George Staunton, in refusing to kotow before the Jiaqing emperor thereby consigning the Embassy to its premature dismissal, is rejected. Amherst emerges as an effective leader whose options were constrained by earlier flawed assumptions about British standing in China, ambiguous and conflicting instructions and an uncompromising Qing court determined to reinforce the protocols of the tributary system. The intense diplomatic encounter endured by the Amherst Embassy is examined within a traditional historical approach of causes, responses and outcomes although aspects of the resulting cultural clash lend themselves to an anthropological and sensory analysis. A revised British assessment of China arose from the diplomatic ashes of the Embassy’s failure. Views of the Qing emperor changed from a civil and enlightened despot to a degenerate potentate ruling over a decaying empire whose arrogance and ignorance rendered futile any further British diplomatic overtures. It was already apparent to some officials that force might be required in future to achieve British aims in China.
Thermo-mechanical behaviour of a compacted swelling clay
Creators: name: Tang, Anh-Minh
name: Cui, Yu-Jun
name: Barnel, Nathalie
Publisher: name: arXiv
Year: 2008
Subjects: subject: Classical Physics (physics.class-ph)
subject: FOS: Physical sciences

description: Compacted unsaturated swelling clay is often considered as a possible buffer material for deep nuclear waste disposal. An isotropic cell permitting simultaneous control of suction, temperature and pressure was used to study the thermo-mechanical behaviour of this clay. Tests were performed at total suctions ranging from 9 to 110 MPa, temperature from 25 to 80 degrees C, isotropic pressure from 0.1 to 60 MPa. It was observed that heating at constant suction and pressure induces either swelling or contraction. The results from compression tests at constant suction and temperature evidenced that at lower suction, the yield pressure was lower, the elastic compressibility parameter and the plastic compressibility parameter were higher. On the other hand, at a similar suction, the yield pressure was slightly influenced by the temperature; and the compressibility parameters were insensitive to temperature changes. The thermal hardening phenomenon was equally evidenced by following a thermo-mechanical path of loading-heating-cooling-reloading.
Solving two-dimensional non-relativistic electronic and muonic atoms governed by Chern-Simon potential
Creators: name: Caruso, Francisco
name: Helayël-Neto, José A.
name: Oguri, Vitor
name: Silveira, Felipe
Publisher: name: arXiv
Year: 2020
Subjects: subject: Quantum Physics (quant-ph)
subject: Atomic Physics (physics.atom-ph)
subject: FOS: Physical sciences

description: Bidimensional muonic and electronic atoms, with nuclei composed of a proton, deuteron, and triton, and governed by Chern-Simons potential, are numerically solved. Their eigenvalues and eigenfunctions are determined with a slightly modified Numerov method. Results are compared with those assuming that the same atoms are governed by the usual $1/r$ potential even in a two-dimensional space, as well as with its three-dimensional analogs.
description: 17 pages, 7 figures
Dialogism, cultural narratolgy, and contemporary Canadian novels in English
Creators: name: Helms, Gabriele
Publisher: name: University of British Columbia
Year: 2009

description: In "Dialogism, Cultural Narratology, and Contemporary Canadian Novels in English," I develop a methodological framework that combines Mikhail M. Bakhtin's concept of dialogism with the idea of a cultural narratology to read for ideological signification in narrative structures. Narrative forms, I argue, are not ideal and timeless but socially and historically determined. In this dissertation, I explore how they can contribute.to or impede a text's challenge to hegemonic discourses and social injustices. In particular, I focus on Bakhtin's concept of dialogism to examine the multiplicity and interrelation of voices in narrative texts. Because voices and discourses always operate within relations of power, I understand struggle and conflict not as obstacles to but as conditions of dialogic relations. In my readings of selected contemporary Canadian novels in English, I argue that these texts challenge dominant discourses from positions of difference and resistance and inscribe previously oppressed and silenced voices through dialogic relations. As a result, the novels question the idea of an homogeneous Canadian culture. After establishing the theoretical context for this study, which includes the notion of resistance literature and the principles of cultural narratology, I introduce Bakhtin's main ideas on dialogism and situate my own approach to dialogism in a selective overview of recent Bakhtin criticism. The remaining chapters are devoted to Joy Kogawa's "Obasan", Sky Lee's "Disappearing Moon Cafe", Aritha van Herk's "Places Far From Ellesmere", Daphne Marlatt's "Ana Historic", Jeannette Armstrong's "Slash", Thomas King's "Green Grass, Running Water", and Margaret Sweatman's "Fox". I conclude by indicating further directions for research that could employ the methodological framework of dialogism and cultural narratology.
Artifact of paper "Hash4Patch: A Lightweight Low False Positive Tool for Finding Vulnerability Patch Commits" - 21st International Conference on Mining Software Repositories (MSR 2024)
Creators: name: Scalco, Simone
name: Paramitha, Ranindya
Publisher: name: figshare
Year: 2024
Subjects: classificationCode: 461299
subject: Software engineering not elsewhere classified
classificationCode: 460406
subject: Software and application security

description: [Context:] Patch commits are useful to complete vulnerability datasets for training ML models and for developers to find a safe version for their dependencies. [Objective:] However, there is a gap in the state-of-the-art (SOTA) for a lightweight low False Positive patch commit finder. [Method:] We implemented Hash4Patch, a new tool to be used along with a current SOTA patch finder. We then validated it with a dataset of 160 CVEs. [Results:] Our approach significantly reduced the False Positives produced by a state-of-the-art tool with only 1 minute of additional running time on average. [Conclusions:] Our tool is able to effectively and efficiently reduce the number of alerts found by other patch commit finders, thus minimizing the manual effort needed by developers.
Fully anisotropic superconductivity with few Helmholtz Fermi-surface harmonics
Creators: name: Lafuente-Bartolome, Jon
name: Gurtubay, Idoia G.
name: Eiguren, Asier
Publisher: name: arXiv
Year: 2020
Subjects: subject: Superconductivity (cond-mat.supr-con)
subject: FOS: Physical sciences

description: We present an alternative representation for the anisotropic Eliashberg equations of superconductivity, whose numerical solution yields an efficiency gain of several orders of magnitude with respect to the conventional representation in momentum space. Our method is a practical realization of a long-sought approach, whose essence is a linear transformation from regular ${\bf k}$ space to a set of orthonormal functions defined as the solutions of the Helmholtz equation on the Fermi surface. In this way, all the anisotropy of the problem can be described by a handful of coefficients with built-in symmetry. We perform benchmark calculations on the gap anisotropy of MgB$_2$, and reproduce previous results at a remarkably reduced computational cost. Furthermore, we apply our methodology to efficiently determine the transition temperature of the compressed YH$_6$ hydride, obtaining very good agreement with recent experimental measurements. The simplification introduced by our method enables the high-throughput exploration of superconducting materials without having to resort to the isotropic approximation, and opens up possibilities towards first principles calculations of more advanced theories of superconductivity.
Measurements of branching fractions for inclusive K0~/K0 and K*(892)+- decays of neutral and charged D mesons
Creators: name: Ablikim, M.
Publisher: name: arXiv
Year: 2006
Subjects: subject: High Energy Physics - Experiment (hep-ex)
subject: FOS: Physical sciences

description: Using the data sample of about 33 pb-1 collected at and around 3.773 GeV with the BES-II detector at the BEPC collider, we have studied inclusive K0~/K0 and K*(892)+- decays of D0 and D+ mesons. The branching fractions for the inclusive K0~/K0 and K*(892)- decays are measured to be BF(D0 to K0~/K0 X)=(47.6+-4.8+-3.0)%, BF(D+ to K0~/K0 X)=(60.5+-5.5+-3.3)%, BF(D0 to K*- X)=(15.3+- 8.3+- 1.9)% and BF(D+ to K*- X)=(5.7+- 5.2+- 0.7)%. The upper limits of the branching fractions for the inclusive K*(892)+ decays are set to be BF(D0 to K*+ X)<3.6% and BF(D+ to K*+ X) <20.3% at 90% confidence level.
มาตรการบังคับใช้โทษทางอาญาตามคำพิพากษา : ศึกษากรณีพักการลงโทษ
Creators: name: ณัฐกานต์ มูลสืบ
Publisher: name: มหาวิทยาลัยราชภัฏเชียงราย
Year: 2555

description: 1, 6, วารสารการวิจัยกาสะลองคำ มหาวิทยาลัยราชภัฏเชียงราย
Stability conditions and Teichmüller space
Creators: name: Allegretti, Dylan G. L.
Publisher: name: arXiv
Year: 2021
Subjects: subject: Geometric Topology (math.GT)
subject: High Energy Physics - Theory (hep-th)
subject: Algebraic Geometry (math.AG)
subject: Differential Geometry (math.DG)
subject: FOS: Mathematics
subject: FOS: Physical sciences

description: We consider a 3-Calabi-Yau triangulated category associated to an ideal triangulation of a marked bordered surface. Using the theory of harmonic maps between Riemann surfaces, we construct a natural map from a component of the space of Bridgeland stability conditions on this category to the enhanced Teichmüller space of the surface. We describe a relationship between the central charges of objects in the category and shear coordinates on the Teichmüller space.
description: 65 pages. Version 2: Minor changes
Highly nonclassical photon statistics in parametric down conversion
Creators: name: Waks, Edo
name: Sanders, Barry
name: Diamanti, Eleni
name: Yamamoto, Yoshihisa
Publisher: name: arXiv
Year: 2006
Subjects: subject: Quantum Physics (quant-ph)
subject: FOS: Physical sciences

description: We use photon counters to obtain the joint photon counting statistics from twin-beam non-degenerate parametric down conversion, and we demonstrate directly, and with no auxiliary assumptions, that these twin beams are nonclassical.
Lexical elicitation: voice quality; Mann 3-118, 322-472
Creators: name: Romphamueang, Warunee
name: Lau-Preechathammarach, Raksit Tyler
Publisher: name: California Language Archive, University of California, Berkeley
Year: 2023
Subjects: subject: sss

description: Elicitation of words differing only in voice quality (modal, breathy) and words from Mann's MSEA Swadesh list 3-118, 322-472. Consultant is a 20-year-old female.
Hansenocaris undetermined
Creators: name: Olesen, Jørgen
name: Grygier, Mark J.
Publisher: name: Zenodo
Year: 2024
Subjects: Biodiversity
Taxonomy
Animalia
Arthropoda
Maxillopoda
Hansenocarididae
Hansenocaris
Hansenocaris undetermined

description: Y-nauplius Type H
Figs 2, 8H–J
Type H – Dreyer et al. 2023a: figs 3, 5a, c, tables s1–s2. — Olesen et al. 2024: fig. 3a.
Material examined
JAPAN – Okinawa, Sesoko I., laboratory pier, 26°38ʹ09.4ʺ N, 127°51ʹ55.2ʺ E • 5 LSN, 2 of which molted to cyprids; 2018–2019 (Tables 1 and S1).
Description
LAST-STAGE NAUPLIUS (LSN). Lecithotrophic. Body widely ovate in postero-dorsal view; about 1.2 times as long as wide; lateral margins tapering gradually towards caudal end with some discontinuity at posterior end of cephalic shield. In lateral view, trunk axis downturned a full 90° relative to cephalic axis. Length ca 350 µm (in lateral view following body bend, without dorso-caudal spine), greatest width 210 µm, greatest dorso-ventral thickness ca 100 µm. Labrum not examined. Body terminating in very short (8 µm), conical dorso-caudal spine and very long (85 µm), curved, ventrally directed (thus parallel to cephalic axis) furcal spines with small spine at base of each.
CYPRID VIEWED THROUGH CUTICLE OF LSN. Body weakly brown-pigmented. Many lipid vesicles present in dorsal part of cephalon, and dense concentration of yolk granules along entire length of central gut-like tube. Red pigmentation associated with yolk granules in gut-like tube. Lateral margins of cephalon with large, rectangular areas of black pigmentation. Telson short, less than half as long as thorax, with black pigmentation (possibly remnant from the LSN).
Identification and variation
Easily recognizable by the combination of its right-angle bend of the body, the very large, talon-like furcal spines (‘large talon’ in comparison to the most similar morphospecies, Types F and G), accompanied by small basal spines, red pigmentation associated with the yolk granules in the gut-like tube and the large areas of black pigmentation laterally on the margins of the cephalic shield.
Distribution
Japan (Sesoko Island, Okinawa), Taiwan (Green Island).
description: Published as part of Olesen, Jørgen & Grygier, Mark J., 2024, Taxonomic diversity of marine planktonic ' y-larvae' (Crustacea: Facetotecta) from a coral reef hotspot locality (Japan, Okinawa), with a key to y-nauplii, pp. 1-90 in European Journal of Taxonomy 929 (1) on pages 23-24, DOI: 10.5852/ejt.2024.929.2479, http://zenodo.org/record/10876286
On the Scattering Phase for AdS_5 x S^5 Strings
Creators: name: Beisert, Niklas
Publisher: name: arXiv
Year: 2006
Subjects: subject: High Energy Physics - Theory (hep-th)
subject: FOS: Physical sciences

description: We propose a phase factor of the worldsheet S-matrix for strings on AdS_5 x S^5 apparently solving Janik's crossing relation.
description: 9 pages, v2: revised conclusions about agreement with perturbative string theory; minor changes, v3: resolution to above problems indicated, to appear in Mod. Phys. Lett. A
Metallization of Shock-Compressed Liquid Ammonia
Creators: name: Ravasio, A.
name: Bethkenhagen, M.
name: Hernandez, J. -A.
name: Benuzzi-Mounaix, A.
name: Datchi, F.
name: French, M.
name: Guarguaglini, M.
name: Lefevre, F.
name: Ninet, S.
name: Redmer, R.
name: Vinci, T.
Publisher: name: arXiv
Year: 2021
Subjects: subject: Earth and Planetary Astrophysics (astro-ph.EP)
subject: Chemical Physics (physics.chem-ph)
subject: Plasma Physics (physics.plasm-ph)
subject: FOS: Physical sciences

description: Ammonia is predicted to be one of the major components in the depths of the ice giant planets Uranus and Neptune. Their dynamics, evolution, and interior structure are insufficiently understood and models rely imperatively on data for equation of state and transport properties. Despite its great significance, the experimentally accessed region of the ammonia phase diagram today is still very limited in pressure and temperature. Here we push the probed regime to unprecedented conditions, up to $\sim$350 GPa and $\sim$40000 K. Along the Hugoniot, the temperature measured as a function of pressure shows a subtle change in slope at $\sim$7000 K and $\sim$90 GPa, in agreement with ab initio simulations we have performed. This feature coincides with the gradual transition from a molecular liquid to a plasma state. Additionally, we performed reflectivity measurements, providing the first experimental evidence of electronic conduction in high-pressure ammonia. Shock reflectance continuously rises with pressure above 50 GPa and reaches saturation values above 120 GPa. Corresponding electrical conductivity values are up to 1 order of magnitude higher than in water in the 100 GPa regime, with possible significant contributions of the predicted ammonia-rich layers to the generation of magnetic dynamos in ice giant interiors.
description: Please visit publisher's website for supplementary information
Spectral image modelling for material-based visualisation
Creators: name: Gu, Lin
Publisher: name: The Australian National University
Year: 2018
Subjects: subject: Spectral imaging
subject: Image processing Digital techniques.
subject: Spectrum analysis Data processing.
subject: Pattern recognition systems.
subject: Computer vision

description: This thesis addresses three problems in trichromatic and hyperspectral imagery: outdoor shadow detection, recovery of photometric invariants and personalised image visualisation. It shows how detection of shadows in outdoor imagery is a necessary preprocessing step, before photometric invariants can be separated from a single spectral or RGB image. It then shows how the recovered reflectance parameters can be used to create user colour preferences for visualising the image. The first contribution of this thesis is a physics based model to detect shadows in outdoor scenes. Here, we note that shadows arise from diffuse skylight that has been scattered by particles in the atmosphere. This yields a treatment in which shadows in the image can be viewed as a linear combination of scattered sunlight obeying Rayleigh scattering and Mie theory. This allows a ratio to be calculated that permits the problem of recovering the shadowed areas in an image to be recast into a clustering setting making use of active contours. It also allows a metric to be formulated that indicates the degree to which a scene is overcast. Secondly, we address the problem of efficiently recovering the reflectance parameters from a single multispectral or hyperspectral image. To do so, we propose a shapelet based estimator (SBE) to recover shading in an image. The optimisation setting presented here is based on a three-step process. The first calculates the geometric shading based on an alternative shapelets method; the second uses a constrained optimisation approach to update the surface reflectance and the specular coefficients; and the third employs either a simple least-squares formulation or its variants to update the illuminant power spectrum. This yields a computationally efficient method that achieves speed-ups of nearly an order of magnitude as compared to its closest alternative without compromising performance. Moreover, our photometric invariants recovery method can derive the material reflectance and illumination parameters which are necessary for creating user colour preference profiles. To visualise an image, we make use of the heterogeneous nature of a scene and impose consistency over object materials, an approach that allows small compositional variations across objects in the image to be detected. In this way, the quality of the images under consideration can be maximised based on user preferences. This means individual user profiles can be employed for processing real world imagery, while avoiding undesirable effects when the final colour image is produced.
การศึกษาความสัมพันธ์ของตัวแปรที่ส่งผลต่อแรงจูงใจใฝ่สัมฤทธิ์ทางการเรียนวิชาคณิตศาสตร์พื้นฐาน ของนักศึกษามหาวิทยาลัยกรุงเทพ
Creators: name: กฤศวรรณ ประเสริฐสิทธิ์
Publisher: name: มหาวิทยาลัยราชภัฏเชียงราย
Year: 2555

description: 1, 6, วารสารการวิจัยกาสะลองคำ มหาวิทยาลัยราชภัฏเชียงราย
Signal processing techniques for multiple target localisation and tracking
Creators: name: Leong, Pei Hua
Publisher: name: The Australian National University
Year: 2014
Subjects: subject: Signal processing

description: Target geolocation and tracking systems have a wide spectrum of important practical applications ranging from military to biomedical systems. This thesis explores two main areas of target geolocation and tracking systems: (i) the active target localisation of multiple moving targets using wideband chirp signals received at a sensor array, for both the far and near field cases; and (ii) the passive tracking of a single target moving with nearly constant velocity using the sequence of bearing measurements received at a single observation platform, also known as the bearings-only tracking problem. It is challenging for traditional parameter estimation methods to effectively localise multiple moving targets using wideband signals received at a sensor array due to the frequency dependent nature of the array steering vector. We develop a technique for processing the wideband signals to eliminate the frequency dependency in the array steering vector so that existing high-resolution parameter estimation methods designed for narrowband signals can be applied for the localisation of both far and near field targets. As chirp signals are used as wideband signals in our analysis, the properties of the fractional Fourier transform were exploited to improve the accuracy and resolution of the target localisation system. The performance of most existing nonlinear Bayesian filtering algorithms in highly nonlinear scenarios of the bearings-only tracking problem is unsatisfactory. The particle filter can achieve excellent performance but it is computationally expensive. We present an alternative, efficient nonlinear filtering algorithm, called the Gaussian-sum cubature Kalman filter for the bearings-only tracking problem and it demonstrates comparable performance to the particle filter with significantly reduced computational cost. The performance of the proposed algorithm can be improved by smoothing the estimated states using future measurements and we present Gaussian-sum cubature Kalman smoothers for the bearings-only tracking problem. In addition to that, we develop a track-before-detect algorithm for simultaneously detecting and tracking a single target to tackle scenarios with low signal-to-noise ratio conditions.
Testing non-unitarity of neutrino mixing matrices at neutrino factories
Creators: name: Goswami, Srubabati
name: Ota, Toshihiko
Publisher: name: arXiv
Year: 2008
Subjects: subject: High Energy Physics - Phenomenology (hep-ph)
subject: FOS: Physical sciences

description: In this paper we explore the effect of non-unitary neutrino mixing on neutrino oscillation probabilities both in vacuum and matter. In particular, we consider the $ν_μ\to ν_τ$ channel and using a Neutrino Factory as the source for $ν_μ$'s discuss the constraints that can be obtained on the moduli and phases of the parameters characterizing the violation of unitarity. We point out how the new CP violation phases present in the case where the non-unitary mixings give rise to spurious ``degenerate'' solutions in the parameter space and discuss how the true solutions can be extricated by combining measurements at several baselines.
description: 15 pages, 8 eps files
Polynomial selection for the number field sieve
Creators: name: Bai, Shi
Publisher: name: The Australian National University
Year: 2018
Subjects: subject: QA247.B35 2011
subject: Sieves (Mathematics)
subject: Polynomials

description: The number field sieve is asymptotically the most efficient algorithm known for factoring large integers. It consists of several stages, the first one being polynomial selection. The running time of subsequent steps depends on the quality of the chosen polynomials. In the thesis, we discuss the current state of the art in polynomial selection. Polynomial selection can be divided into three stages: polynomial generation, size optimization and root optimization. We give some analysis of polynomial generation algorithms. We then describe some improvements for polynomial size optimization and root optimization. The size optimization is based on determining a translation and then locally optimizing the polynomial. The root optimization is based on Hensel's lifting lemma and a root sieve on congruences classes modulo small prime powers. The improvements described here have been implemented and used to obtain some good polynomials in practice. We also discuss some recent progress on polynomial selection using lattice reduction.
Self-propulsion with speed and orientation fluctuation: exact computation of moments and dynamical bistabilities in displacement
Creators: name: Shee, Amir
name: Chaudhuri, Debasish
Publisher: name: arXiv
Year: 2021
Subjects: subject: Statistical Mechanics (cond-mat.stat-mech)
subject: Soft Condensed Matter (cond-mat.soft)
subject: Biological Physics (physics.bio-ph)
subject: FOS: Physical sciences

description: We consider the influence of active speed fluctuations on the dynamics of a $d$-dimensional active Brownian particle performing a persistent stochastic motion. We use the Laplace transform of the Fokker-Planck equation to obtain exact expressions for time-dependent dynamical moments. Our results agree with direct numerical simulations and show several dynamical crossovers determined by the activity, persistence, and speed fluctuation.The persistence in the motion leads to anisotropy, with the parallel component of displacement fluctuation showing sub-diffusive behavior and non-monotonic variation. The kurtosis remains positive at short times determined by the speed fluctuation, crossing over to a negative minimum at intermediate times governed by the persistence before vanishing asymptotically. The probability distribution of particle displacement obtained from numerical simulations in two-dimension shows two crossovers between contracted and expanded trajectories via two bimodal distributions at intervening times. While the speed fluctuation dominates the first crossover, the second crossover is controlled by persistence like in the worm-like chain model of semiflexible polymers.
description: 10 pages, 6 figures
From controlled to undisciplined data: estimating causal effects in the era of data science using a potential outcome framework
Creators: name: Dominici, Francesca
name: Bargagli-Stoffi, Falco J.
name: Mealli, Fabrizia
Publisher: name: arXiv
Year: 2020
Subjects: subject: Methodology (stat.ME)
subject: Applications (stat.AP)
subject: FOS: Computer and information sciences

description: This paper discusses the fundamental principles of causal inference - the area of statistics that estimates the effect of specific occurrences, treatments, interventions, and exposures on a given outcome from experimental and observational data. We explain the key assumptions required to identify causal effects, and highlight the challenges associated with the use of observational data. We emphasize that experimental thinking is crucial in causal inference. The quality of the data (not necessarily the quantity), the study design, the degree to which the assumptions are met, and the rigor of the statistical analysis allow us to credibly infer causal effects. Although we advocate leveraging the use of big data and the application of machine learning (ML) algorithms for estimating causal effects, they are not a substitute of thoughtful study design. Concepts are illustrated via examples.