cometadata/datacite-rtg-text-other-reclassification-records huggingface dataset:
Microbial transformation of Knoevenagel adducts by whole cells of Brazilian marine-derived fungi: A green approach to remove organic compounds from the aqueous medium
Creators: name: Zanin, Lucas Lima
name: de Queiroz, Thayane Melo
name: Porto, André Luiz Meleiro
Publisher: name: Taylor & Francis
Year: 2022
Subjects: subject: Microbiology
subject: FOS: Biological sciences
subject: Pharmacology
subject: Biotechnology
subject: Evolutionary Biology
subject: Chemical Sciences not elsewhere classified
subject: Ecology
subject: Inorganic Chemistry
subject: FOS: Chemical sciences

description: Herein, we report the use of whole cells of Brazilian marine-derived fungi in the biotransformation and biodegradation of organic compounds, particularly, Knoevenagel adducts. A preliminary screening with five marine-derived fungi revealed that these microorganisms promoted the bioreduction and biodegradation of four Knoevenagel adducts. Additionally, a biotransformation pathway for these compounds was proposed, which suggested the presence of ene-reductase and alcohol dehydrogenase in the marine-derived fungi, which catalysed the microbial transformation of the substrates. In summary, the fast biodegradation of organic molecules has an ecological relevance since several of these compounds and their biotransformed products have aquatic environment impact.
RETURN To an Address presented to His Honour the Lieutenant-Governor, praying him to cause to be laid before the House copies of all correspondence which has passed between his Government and the Government of the Dominion of Canada, with reference to the question of the removal of the Indians from the Songhees Reserve since the return dated the 11th February, 1897, was presented to the House.
Creators: name: British Columbia. Legislative Assembly
Publisher: name: Victoria, BC : Government Printer
Year: 2014

Abstract
Collectiive Properties of Adsorption-Desorption Processes
Creators: name: Krapivsky, P. L.
name: Ben-Naim, E.
Publisher: name: arXiv
Year: 1993
Subjects: subject: Condensed Matter (cond-mat)
subject: FOS: Physical sciences

description: A reversible adsorption-desorption parking process in one dimension is studied. An exact solution for the equilibrium properties is obtained. The coverage near saturation depends logarithmically on the ratio between the adsorption rate, $\k_+$, and the desorption rate, $\k_-$, \hbox{$\req\cong 1-1/\log(k_+/k_-)$}, when $\k_+\gg\k_-$. A time dependent version of the reversible problem with immediate adsorption ($k_+=\infty$) is also considered. Both heuristic arguments and numerical simulations reveal a logarithmically slow approach to the completely covered state, \hbox{$1-ρ(t)\sim 1/\log(t)$}.
description: 13 pages, 2 figures, TeX
RETURN To an Order of the House for a Return showing all transactions of the Provincial Government with any person or persons, company or companies, with respect to the "Creameries Act, 1896"; said returns to furnish (a) the names of all persons or companies to whom or which aid has been extended; (b) amount of said aid; (c) location of any such creamery.
Creators: name: British Columbia. Legislative Assembly
Publisher: name: Victoria, BC : Government Printer
Year: 2014

Abstract
Design Values, Craft, and Futures: How do the Values, Skill, and Thought Processes Embodied in Craft Translate to our Future Design Paradigms?
Creators: name: Potter, Tracy
Publisher: name: Carnegie Mellon University
Year: 2017
Subjects: Design

description: This thesis project began as a study in traditional craft methodologies and ways of understanding design with the goal of learning how to better inform our often technologically focused futures. Over the course of the project it evolved into a study in the process itself and became an exploration of what it means to engage in material centered design research and learning. Through a process of material engagement, as well as learning through making with both analog and digital fabrication tools, I took on a series of studies to better understand for myself how to apply a craft and skills based learning mind set. As my work progressed I evaluated my studies based on different levels of perceived value. I was able to synthesize the learnings into a framework that could be used to explore how both the tangible and intangible qualities of craft might help us to inform our design exploration and research process methods.
Seeing Beyond Sight: Platiality through the lived spatiality of individuals with blindness
Creators: name: Iskandar, Sonya Veronica
Publisher: name: Swinburne
Year: 2025

description: The thesis explores inclusivity in built environment design through the lived experiences of individuals with blindness. It critiques visual centricity in design, which can marginalise individuals with blindness. It argues for a holistic perspective that acknowledges blindness as a whole-body experience rather than merely a lack of sight. Phenomenologically grounded, the research explores how persons with blindness establish a sense of place through their ways of perceiving and experiencing. Through secondary data and interviews, the thesis highlights the importance of integrating diverse sensory knowledge into design. Conceptually, it frames a ‘culture of wholeness’, positioning multisensory engagement as central to inclusivity.
Assessment of a silicon quantum dot spin qubit environment via noise spectroscopy
Creators: name: Chan, K. W.
name: Huang, W.
name: Yang, C. H.
name: Hwang, J. C. C.
name: Hensen, B.
name: Tanttu, T.
name: Hudson, F. E.
name: Itoh, K. M.
name: Laucht, A.
name: Morello, A.
name: Dzurak, A. S.
Publisher: name: arXiv
Year: 2018
Subjects: subject: Quantum Physics (quant-ph)
subject: FOS: Physical sciences

description: Preserving coherence long enough to perform meaningful calculations is one of the major challenges on the pathway to large scale quantum computer implementations. Noise coupled from the environment is the main contributing factor to decoherence but can be mitigated via engineering design and control solutions. However, this is only possible after acquiring a thorough understanding of the dominant noise sources and their spectrum. In this paper, we employ a silicon quantum dot spin qubit as a metrological device to study the noise environment experienced by the qubit. We compare the sensitivity of this qubit to electrical noise with that of an implanted phosphorus donor in silicon qubit in the same environment and measurement set-up. Our results show that, as expected, a quantum dot spin qubit is more sensitive to electrical noise than a donor spin qubit due to the larger Stark shift, and the noise spectroscopy data shows pronounced charge noise contributions at intermediate frequencies (2-20 kHz).
RETURN To an Order of the House for a Return showing the application of E M. Johnson, Esq. (on behalf of Miss Davey, of Victoria), for certain lands near Grand Forks, covered by the record of Ruckle Bros., of that place, and also of all correspondence connected therewith.
Creators: name: British Columbia. Legislative Assembly
Publisher: name: Victoria, BC : Government Printer
Year: 2014

Abstract
Yangian Algebra and Correlation Functions in Planar Gauge Theories
Creators: name: Beisert, Niklas
name: Garus, Aleksander
Publisher: name: arXiv
Year: 2018
Subjects: subject: High Energy Physics - Theory (hep-th)
subject: Mathematical Physics (math-ph)
subject: Quantum Algebra (math.QA)
subject: FOS: Physical sciences
subject: FOS: Mathematics

description: In this work we consider colour-ordered correlation functions of the fields in integrable planar gauge theories such as N=4 supersymmetric Yang-Mills theory with the aim to establish Ward-Takahashi identities corresponding to Yangian symmetries. To this end, we discuss the Yangian algebra relations and discover a novel set of bi-local gauge symmetries for planar gauge theories. We fix the gauge, introduce local and bi-local BRST symmetries and propose Slavnov-Taylor identities corresponding to the various bi-local symmetries. We then verify the validity of these identities for several correlation functions at tree and loop level. Finally, we comment on the possibility of quantum anomalies for Yangian symmetry.
description: 56 pages, v2: minor changes to address issues raised at https://scipost.org/submission/1804.09110v1/
Exact Solution for the Distribution of Transmission Eigenvalues in a Disordered Wire and Comparison with Random-Matrix Theory
Creators: name: Beenakker, C. W. J.
name: Rejaei, B.
Publisher: name: arXiv
Year: 1993
Subjects: subject: Condensed Matter (cond-mat)
subject: FOS: Physical sciences

description: An exact solution is presented of the Fokker-Planck equation which governs the evolution of an ensemble of disordered metal wires of increasing length, in a magnetic field. By a mapping onto a free-fermion problem, the complete probability distribution function of the transmission eigenvalues is obtained. The logarithmic eigenvalue repulsion of random-matrix theory is shown to break down for transmission eigenvalues which are not close to unity. ***Submitted to Physical Review B.****
description: 20 pages, REVTeX-3.0, INLO-PUB-931028a
RETURN To an Address presented to His Honour the Lieutenant-Governer, praying him to cause to be laid before the House copies of all correspondence between his Government, or any member thereof, and any person or persons, company or companies in relation to the proposed construction of railways from the cost to the Columbia River, or to any part of the Kootenay District.
Creators: name: British Columbia. Legislative Assembly
Publisher: name: Victoria, BC : Government Printer
Year: 2014

Abstract
Exact solution of Schrodinger equation for modified Kratzer's molecular potential with the position-dependent mass
Creators: name: Sever, Ramazan
name: Tezcan, Cevdet
Publisher: name: arXiv
Year: 2007
Subjects: subject: Quantum Physics (quant-ph)
subject: FOS: Physical sciences

description: Exact solutions of Schrodinger equation are obtained for the modified Kratzer and the corrected Morse potentials with the position-dependent effective mass. The bound state energy eigenvalues and the corresponding eigenfunctions are calculated for any angular momentum for target potentials. Various forms of point canonical transformations are applied. PACS numbers: 03.65.-w; 03.65.Ge; 12.39.Fd Keywords: Morse potential, Kratzer potential, Position-dependent mass, Point canonical transformation, Effective mass Schrödinger equation.
description: 9 pages
Reflection positivity in nonlocal gravity
Creators: name: Christodoulou, Marios
name: Modesto, Leonardo
Publisher: name: arXiv
Year: 2018
Subjects: subject: High Energy Physics - Theory (hep-th)
subject: General Relativity and Quantum Cosmology (gr-qc)
subject: FOS: Physical sciences

description: Contrary to recent claims in the literature, a simple test for reflection positivite, which we call perturbative reflection positivity in the coincidence limit, is shown to be satisfied for nonlocal field theories. Particular attention is given to weakly nonlocal gravity and gauge theories.
description: 5 pages, 4 figures
Geometric Interpretation of the Quantum Master Equation in the BRST--anti-BRST Formalism
Creators: name: Henneaux, Marc
Publisher: name: arXiv
Year: 1992
Subjects: subject: High Energy Physics - Theory (hep-th)
subject: FOS: Physical sciences

description: The geometric interpretation of the antibracket formalism given by Witten is extended to cover the anti-BRST symmetry. This enables one to formulate the quantum master equation for the BRST--anti-BRST formalism in terms of integration theory over a supermanifold. A proof of the equivalence of the standard antibracket formalism with the antibracket formalism for the BRST--anti-BRST symmetry is also given.
description: 12 pages
Fluctuations about the Fubini-Lipatov instanton for false vacuum decay in classically scale invariant models
Creators: name: Garbrecht, Bjorn
name: Millington, Peter
Publisher: name: arXiv
Year: 2018
Subjects: subject: High Energy Physics - Theory (hep-th)
subject: High Energy Physics - Phenomenology (hep-ph)
subject: FOS: Physical sciences

description: For a scalar theory whose classical scale invariance is broken by quantum effects, we compute self-consistent bounce solutions and Green's functions. Deriving analytic expressions, we find that the latter are similar to the Green's functions in the archetypal thin-wall model for tunneling between quasi-degenerate vacua. The eigenmodes and eigenspectra are, however, very different. Large infrared effects from the modes of low angular momentum $j=0$ and $j=1$, which include the approximate dilatational modes for $j=0$, are dealt with by a resummation of one-loop effects. For a parametric example, this resummation is carried out numerically.
description: 26 pages, 9 figures, revtex format; to match published version
Design for Organizational Intelligence in Non-Profits
Creators: name: Batokova, Barbara
Publisher: name: Carnegie Mellon University
Year: 2011
Subjects: Design

description: In many small to mid-size nonprofits, a large amount of knowledge and information is confined to local folders, hard copy formats or even specific people, making it inaccessible to those who could benefit from it. This informal practice causes duplication of efforts and prevents the organization from maintaining critical knowledge and learning from past experience. Partnering with The Center for Victims of Violence and Crime (CVVC), a Pittsburgh-based human services nonprofit organization, I applied human-centered design methods to identify their specific informal knowledge and information processes and structures. Using the research findings, I developed a sustainable and systematic knowledge management practice that also takes into account the constraints of funding and time, which many nonprofits face. To support this practice, I created a system with a hierarchical information architecture that is able to expand overtime to accommodate the growth of the organization and its programs. It enables clear organization, storage and retrieval of explicit knowledge documents as well as the related tacit knowledge, creating the necessary basis for sharing and collaboration. By simplifying and formalizing major administrative tasks, the system also streamlines organizational processes, allowing the staff to work more effectively. Implemented with Microsoft SharePoint 2010, the system creates a trustworthy environment that is necessary to facilitate organizational learning and maintain critical knowledge, leading to sustainability and innovation.
Size Dependence and Convergence of the Retrieval Parameters of Metamaterials
Creators: name: Zhou, Jiangfeng
name: Koschny, Thomas
name: Kafesaki, Maria
name: Soukoulis, Costas M.
Publisher: name: arXiv
Year: 2007
Subjects: subject: Materials Science (cond-mat.mtrl-sci)
subject: Other Condensed Matter (cond-mat.other)
subject: FOS: Physical sciences

description: We study the dependence of the retrieval parameters, such as the electric permittivity, the magnetic permeability and the index of refraction, $n$, on the size of the unit cell of a periodic metamaterial. The convergence of the retrieved parameters on the number of the unit cells is also examined. We have concentrated our studies on the so-called fishnet structure, which is the most promising design to obtain negative $n$ at optical wavelengths. We find that as the size of the unit cell decreases, the magnitude of the retrieved effective parameters increases. The convergence of the effective parameters of the fishnet as the number of the unit cells increases is demonstrated but found to be slower than for regular split ring resonators and wires structures. This is due to a much stronger coupling between the different unit cells in the fishnet structure.
description: Journal-ref and DOI added
The propagating speed of relic gravitational waves and their refractive index during inflation
Creators: name: Giovannini, Massimo
Publisher: name: arXiv
Year: 2018
Subjects: subject: General Relativity and Quantum Cosmology (gr-qc)
subject: Cosmology and Nongalactic Astrophysics (astro-ph.CO)
subject: High Energy Physics - Phenomenology (hep-ph)
subject: High Energy Physics - Theory (hep-th)
subject: FOS: Physical sciences

description: If the refractive index of the tensor modes increases during a conventional inflationary stage of expansion the relic graviton spectrum is tilted towards high frequencies. Two apparently diverse parametrizations of this effect are shown to be related by a rescaling of the four-dimensional metric through a conformal factor that involves the refractive index itself. Non-monotonic spectra with a maximum in the MHz region correspond to a limited variation of the refractive index terminating well before the end of inflation. After exploring a general approach encompassing the ones proposed so far, we estimate the required sensitivity for the direct detection of the predicted gravitational radiation and demonstrate that the allowed regions of the parameter space are within reach for some of the planned detectors operating either in the audio band (like Ligo/Virgo and Kagra) or in the mHz band (like Lisa, Bbo and Decigo).
description: 32 pages, 12 figures; corrected typos and comments added
RETURN To an Order of the House for a full Return of all papers and reports from any person or persons, and correspondence between any member of the Government and any other member of the Government, and between any member of the Government and any other person; also a detailed statement of money expended by the Government in connection with the Quatsino and Cape Scott colonization.
Creators: name: British Columbia. Legislative Assembly
Publisher: name: Victoria, BC : Government Printer
Year: 2014

Abstract
Limits on the global Hubble constant and the age of the universe
Creators: name: Suto, Y.
name: Suginohara, T.
name: Inagaki, Y.
Publisher: name: arXiv
Year: 1994
Subjects: subject: Astrophysics (astro-ph)
subject: FOS: Physical sciences

description: While the recent discovery of the Cepheid variables in the Virgo cluster galaxies puts additional support for the Hubble constant $H_0 \sim 80$km/sec/Mpc, a relatively lower value $H_0 \sim 50$km/sec/Mpc is suggested by other distance indicators based on the Sunyaev-Zel'dovich effect and the gravitational lens which probe the universe at higher redshifts $z=(0.1\sim 1)$. In order to reconcile the possible discrepancy between the estimates of the Hubble constants from nearby galaxy samples and high-redshift clusters, we consider a model of locally open universe embedded in the spatially flat universe. We find analytic expressions for the lower limit on the global Hubble constant $\hg$, and the upper limit on the age of the universe with a given value for the Hubble constant $\hl$ in the local universe. We conclude that it is quite unlikely that the above difference in the estimates of the Hubble constant is explained within the framework of the gravitational instability picture.
description: 7 pages, uuencoded compressed PostScript file. PostScript figures available upon request. Submitted to Progress of Theoretical Physics (Letter)
Electromagnetically induced transparency in inhomogeneously broadened divacancy defect ensembles in SiC
Creators: name: Zwier, Olger V.
name: Bosma, Tom
name: Gilardoni, Carmem M.
name: Yang, Xu
name: Onur, Alexander R.
name: Ohshima, Takeshi
name: Son, Nguyen T.
name: van der Wal, Caspar H.
Publisher: name: arXiv
Year: 2022
Subjects: subject: Quantum Physics (quant-ph)
subject: FOS: Physical sciences

description: Electromagnetically induced transparency (EIT) is a phenomenon that can provide strong and robust interfacing between optical signals and quantum coherence of electronic spins. In its archetypical form, mainly explored with atomic media, it uses a (near-)homogeneous ensemble of three-level systems, in which two low-energy spin-1/2 levels are coupled to a common optically excited state. We investigate the implementation of EIT with c-axis divacancy color centers in silicon carbide. While this material has attractive properties for quantum device technologies with near-IR optics, implementing EIT is complicated by the inhomogeneous broadening of the optical transitions throughout the ensemble and the presence of multiple ground-state levels. These may lead to darkening of the ensemble upon resonant optical excitation. Here, we show that EIT can be established with high visibility also in this material platform upon careful design of the measurement geometry. Comparison of our experimental results with a model based on the Lindblad equations indicates that we can create coherences between different sets of two levels all-optically in these systems, with potential impact for RF-free quantum sensing applications. Our work provides an understanding of EIT in multi-level systems with significant inhomogeneities, and our considerations are valid for a wide array of defects in semiconductors.
description: 9 pages, 5 figures
Universality of Weak Localization in Disordered Wires
Creators: name: Beenakker, C. W. J.
Publisher: name: arXiv
Year: 1993
Subjects: subject: Condensed Matter (cond-mat)
subject: FOS: Physical sciences

description: We compute the quantum correction due to weak localization for transport properties of disordered quasi-one-dimensional conductors, by integrating the Dorokhov-Mello-Pereyra-Kumar equation for the distribution of the transmission eigenvalues. The result is independent of sample length or mean free path, and has a universal dependence on the symmetry index of the ensemble of scattering matrices. This result generalizes the theory of weak localization for the conductance to all linear statistics on the transmission eigenvalues. ***Accepted for publication in Physical Review B.****
description: 7 pages, REVTeX-3.0, INLO-PUB-931028b
SmartUnit: Empirical Evaluations for Automated Unit Testing of Embedded Software in Industry
Creators: name: Zhang, Chengyu
name: Yan, Yichen
name: Zhou, Hanru
name: Yao, Yinbo
name: Wu, Ke
name: Su, Ting
name: Miao, Weikai
name: Pu, Geguang
Publisher: name: arXiv
Year: 2018
Subjects: subject: Software Engineering (cs.SE)
subject: FOS: Computer and information sciences

description: In this paper, we aim at the automated unit coverage-based testing for embedded software. To achieve the goal, by analyzing the industrial requirements and our previous work on automated unit testing tool CAUT, we rebuild a new tool, SmartUnit, to solve the engineering requirements that take place in our partner companies. SmartUnit is a dynamic symbolic execution implementation, which supports statement, branch, boundary value and MC/DC coverage. SmartUnit has been used to test more than one million lines of code in real projects. For confidentiality motives, we select three in-house real projects for the empirical evaluations. We also carry out our evaluations on two open source database projects, SQLite and PostgreSQL, to test the scalability of our tool since the scale of the embedded software project is mostly not large, 5K-50K lines of code on average. From our experimental results, in general, more than 90% of functions in commercial embedded software achieve 100% statement, branch, MC/DC coverage, more than 80% of functions in SQLite achieve 100% MC/DC coverage, and more than 60% of functions in PostgreSQL achieve 100% MC/DC coverage. Moreover, SmartUnit is able to find the runtime exceptions at the unit testing level. We also have reported exceptions like array index out of bounds and divided-by-zero in SQLite. Furthermore, we analyze the reasons of low coverage in automated unit testing in our setting and give a survey on the situation of manual unit testing with respect to automated unit testing in industry.
description: In Proceedings of 40th International Conference on Software Engineering: Software Engineering in Practice Track, Gothenburg, Sweden, May 27-June 3, 2018 (ICSE-SEIP '18), 10 pages
Charged Topological Solitons in 4+1 Dimensional YMCS Theory
Creators: name: Aulakh, C. S.
Publisher: name: arXiv
Year: 1992
Subjects: subject: High Energy Physics - Theory (hep-th)
subject: FOS: Physical sciences

description: We show that when a Chern-Simons term is added to the action of $SU(N)$ ($N\geq 3$) Yang-Mills theory in 5 dimensions the usual self-dual topological solitons present in the theory necessarily pick up a (topological) electric charge.
description: 11p [Replaced version N.B Some minor typos have been corrected and a note added]
Gravitational Waves produced by Compressible MHD Turbulence from Cosmological Phase Transitions
Creators: name: Niksa, Peter
name: Schlederer, Martin
name: Sigl, Günter
Publisher: name: arXiv
Year: 2018
Subjects: subject: Cosmology and Nongalactic Astrophysics (astro-ph.CO)
subject: General Relativity and Quantum Cosmology (gr-qc)
subject: FOS: Physical sciences

description: We calculate the gravitational wave spectrum produced by magneto-hydrodynamic turbulence in a first order phase transitions. We focus in particular on the role of decorrelation of incompressible (solenoidal) homogeneous isotropic turbulence, which is dominated by the sweeping effect. The sweeping effect describes that turbulent decorrelation is primarily due to the small scale eddies being swept with by large scale eddies in a stochastic manner. This effect reduces the gravitational wave signal produced by incompressible MHD turbulence by around an order of magnitude compared to previous studies. Additionally, we find a more complicated dependence for the spectral shape of the gravitational wave spectrum on the energy density sourced by solenoidal modes (magnetic and kinetic). The high frequency tail follows either a $k^{-5/3}$ or a $k^{-8/3}$ power law for large and small solenoidal turbulence density parameter, respectively. Further, magnetic helicity tends to increase the gravitational wave energy at low frequencies. Moreover, we show how solenoidal modes might impact the gravitational wave spectrum from dilatational modes e.g. sound waves. We find that solenoidal modes greatly affect the shape of the gravitational wave spectrum due to the sweeping effect on the dilatational modes. For a high velocity flow, one expects a $k^{-2}$ high frequency tail, due to sweeping. In contrast, for a low velocity flow and a sound wave dominated flow, we expect a $k^{-3}$ high frequency tail. If neither of these limiting cases is realized, the gravitational wave spectrum may be a broken power law with index between -2 and -3, extending up to the frequency at which the source is damped by viscous dissipation.
description: 28 pages, 6 figures, submitted to CQG, minor mistakes corrected, minor improvements added, figures 2,4,5 and 6 have been slightly revised, major revision of figure 3, appendix added
Verifying the integrity of information along a supply chain using linked data and smart contracts
Creators: name: Braun, Christoph
name: Käfer, Tobias
Publisher: name: Karlsruhe
Year: 2019

description: We showcase our approach to verify off-chained information using Linked Data, Smart Contracts, and RDF graph hashes stored on a Distributed Ledger. In this demo, we present our implementation and a use case from the supply chain domain.
Wrapping liquids, solids, and gases in thin sheets
Creators: name: Paulsen, Joseph D.
Publisher: name: arXiv
Year: 2018
Subjects: subject: Soft Condensed Matter (cond-mat.soft)
subject: FOS: Physical sciences

description: Many objects in nature and industry are wrapped in a thin sheet to enhance their chemical, mechanical, or optical properties. There are similarly a variety of methods for wrapping, from pressing a film onto a hard substrate, to using capillary forces to spontaneously wrap droplets, to inflating a closed membrane. Each of these settings raises challenging nonlinear problems involving the geometry and mechanics of a thin sheet, often in the context of resolving a geometric incompatibility between two surfaces. Here we review recent progress in this area, focusing on highly bendable films that are nonetheless hard to stretch, a class of materials that includes polymer films, metal foils, textiles, graphene, as well as some biological materials. Significant attention is paid to two recent advances: (i) a novel isometry that arises in the doubly-asymptotic limit of high flexibility and weak tensile forcing, and (ii) a simple geometric model for predicting the overall shape of an interfacial film while ignoring small-scale wrinkles, crumples, and folds.
description: 20 pages, 9 figures. Invited submission to Annual Review of Condensed Matter Physics, Vol 10
On the Tractability of (k,i)-Coloring
Creators: name: Bhyravarapu, Sriram
name: Joshi, Saurabh
name: Kalyanasundaram, Subrahmanyam
name: Kare, Anjeneya Swami
Publisher: name: arXiv
Year: 2018
Subjects: subject: Data Structures and Algorithms (cs.DS)
subject: FOS: Computer and information sciences

description: In an undirected graph, a proper (k,i)-coloring is an assignment of a set of k colors to each vertex such that any two adjacent vertices have at most i common colors. The (k,i)-coloring problem is to compute the minimum number of colors required for a proper (k,i)-coloring. This is a generalization of the classic graph coloring problem. We show a parameterized algorithm for the (k,i)-coloring problem with the size of the feedback vertex set as a parameter. Our algorithm does not use tree-width machinery, thus answering a question of Majumdar, Neogi, Raman and Tale [CALDAM 2017]. We also give a faster and simpler exact algorithm for (k, k-1)-coloring. From the hardness perspective, we show that the (k,i)-coloring problem is NP-complete for any fixed values i, k, whenever i
description: This is the full version of the paper, whose preliminary version was published in the CALDAM 2018 conference
Magnetic field near the central region of the Galaxy: Rotation measure of extragalactic sources
Creators: name: Roy, Subhashis
name: Rao, A. Pramesh
name: Subrahmanyan, Ravi
Publisher: name: arXiv
Year: 2007
Subjects: subject: Astrophysics (astro-ph)
subject: FOS: Physical sciences

description: To determine the properties of the Faraday screen and the magnetic field near the central region of the Galaxy, we measured the Faraday rotation measure (RM) towards 60 background extragalactic source components through the -6 deg < l <6 deg, -2 deg < b < 2 deg region of the Galaxy using the 4.8 and 8.5 GHz bands of the ATCA and VLA. Here we use the measured RMs to estimate the systematic and the random components of the magnetic fields. The measured RMs are found to be mostly positive for the sample sources in the region. This is consistent with either a large scale bisymmetric spiral magnetic fields in the Galaxy or with fields oriented along the central bar of the Galaxy. The outer scale of the RM fluctuation is found to be about 40 pc, which is much larger than the observed RM size scales towards the non-thermal filaments (NTFs). The RM structure function is well-fitted with a power law index of 0.7 +/- 0.1 at length scales of 0.3 to 100 pc. If Gaussian random processes in the ISM are valid, the power law index is consistent with a two dimensional Kolmogorov turbulence. If there is indeed a strong magnetic field within 1 degree (radius 150 pc) from the GC, the strength of the random field in the region is estimated to be 20 microGauss. Given the highly turbulent magnetoionic ISM in this region, the strength of the systematic component of the magnetic fields would most likely be close to that of the random component. This suggests that the earlier estimated milliGauss magnetic field near the NTFs is localised and does not pervade the central 300 pc of the Galaxy.
description: 9 pages, 6 figures, accepted for publication in A&A
Statistical Text Analysis for Social Science
Creators: name: O'Connor, Brendan T.
Publisher: name: Carnegie Mellon University
Year: 2014
Subjects: subject: 170203 Knowledge Representation and Machine Learning
subject: FOS: Psychology

description: What can text corpora tell us about society? How can automatic text analysis algorithms efficiently and reliably analyze the social processes revealed in language production? This work develops statistical text analyses of dynamic social and news media datasets to extract indicators of underlying social phenomena, and to reveal how social factors guide linguistic production. This is illustrated through three case studies: first, examining whether sentiment expressed in social media can track opinion polls on economic and political topics (Chapter 3); second, analyzing how novel online slang terms can be very specific to geographic and demographic communities, and how these social factors affect their transmission over time (Chapters 4 and 5); and third, automatically extracting political events from news articles, to assist analyses of the interactions of international actors over time (Chapter 6). We demonstrate a variety of computational, linguistic, and statistical tools that are employed for these analyses, and also contribute MiTextExplorer, an interactive system for exploratory analysis of text data against document covariates, whose design was informed by the experience of researching these and other similar works (Chapter 2). These case studies illustrate recurring themes toward developing text analysis as a social science methodology: computational and statistical complexity, and domain knowledge and linguistic assumptions.
Very High Energy Gamma Rays from PSR1706-44
Creators: name: Kifune, T.
name: Collaboration, CANGAROO
Publisher: name: arXiv
Year: 1994
Subjects: subject: Astrophysics (astro-ph)
subject: FOS: Physical sciences

description: We have obtained evidence of gamma-ray emission above 1 TeV from PSR1706-44, using a ground-based telescope of the atmospheric Čerenkov imaging type located near Woomera, South Australia. This object, a $γ$-ray source discovered by the COS B satellite (2CG342-02), was identified with the radio pulsar through the discovery of a 102 ms pulsed signal with the EGRET instrument of the Compton Gamma Ray Observatory. The flux of the present observation above a threshold of 1 TeV is $\bf \sim $ 1 $\cdot$ 10$^{-11}$ photons cm$^{-2}$ s$^{-1}$, which is two orders of magnitude smaller than the extrapolation from GeV energies. The analysis is not restricted to a search for emission modulated with the 102 ms period, and the reported flux is for all $γ$-rays from PSR1706-44, pulsed and unpulsed. The energy output in the TeV region corresponds to about 10$^{-3}$ of the spin down energy loss rate of the neutron star.
description: 13 pages, latex format (article), 2 figures included
The decisive future of inflation
Creators: name: Hardwick, Robert J.
name: Vennin, Vincent
name: Wands, David
Publisher: name: arXiv
Year: 2018
Subjects: subject: Cosmology and Nongalactic Astrophysics (astro-ph.CO)
subject: High Energy Physics - Theory (hep-th)
subject: FOS: Physical sciences

description: How much more will we learn about single-field inflationary models in the future? We address this question in the context of Bayesian design and information theory. We develop a novel method to compute the expected utility of deciding between models and apply it to a set of futuristic measurements. This necessarily requires one to evaluate the Bayesian evidence many thousands of times over, which is numerically challenging. We show how this can be done using a number of simplifying assumptions and discuss their validity. We also modify the form of the expected utility, as previously introduced in the literature in different contexts, in order to partition each possible future into either the rejection of models at the level of the maximum likelihood or the decision between models using Bayesian model comparison. We then quantify the ability of future experiments to constrain the reheating temperature and the scalar running. Our approach allows us to discuss possible strategies for maximising information from future cosmological surveys. In particular, our conclusions suggest that, in the context of inflationary model selection, a decrease in the measurement uncertainty of the scalar spectral index would be more decisive than a decrease in the uncertainty in the tensor-to-scalar ratio. We have incorporated our approach into a publicly available python class, foxi (https://sites.google.com/view/foxicode), that can be readily applied to any survey optimisation problem.
description: 31 pages, 6 figures, 8 tables, matches published version in JCAP
Random-Matrix Theory of Parametric Correlations in the Spectra of Disordered Metals and Chaotic Billiards
Creators: name: Beenakker, C. W. J.
name: Rejaei, B.
Publisher: name: arXiv
Year: 1993
Subjects: subject: Condensed Matter (cond-mat)
subject: FOS: Physical sciences

description: We study the response to an external perturbation of the energy levels of a disordered metallic particle, by means of the Brownian-motion model introduced by Dyson in the theory of random matrices, and reproduce the results of a recent microscopic theory of Altshuler, Simons, and Szafer. This establishes the validity of Dyson's basic assumption, that parametric correlations in the energy spectrum are dominated by level repulsion, and therefore solely dependent on the symmetry of the hamiltonian. ***Submitted to Physica A.****
description: 24 pages, REVTeX-3.0, INLO-PUB-931028c
First-order structural transition and pressure-induced lattice/phonon anomalies in Sr$_2$IrO$_4$
Creators: name: Samanta, K.
name: Ardito, F. M.
name: Souza-Neto, N. M.
name: Granado, E.
Publisher: name: arXiv
Year: 2018
Subjects: subject: Strongly Correlated Electrons (cond-mat.str-el)
subject: FOS: Physical sciences

description: We investigate the crystal structure and lattice vibrations of Sr$_2$IrO$_4$ by a combined phonon Raman scattering and x-ray powder diffraction experiment under pressures up to $66$ GPa and room temperature. Density functional theory (DFT) and $ab$-initio lattice dynamics calculations were also carried out. A first-order structural phase transition associated with an $8$ % collapse of the $c$-axis is observed at high pressures, with phase coexistence being observed between $\sim 40$ and $55$ GPa. At lower pressures, lattice and phonon anomalies were observed, reflecting crossovers between isostructural competing states. A critical pressure of $P_1=17$ GPa is associated with: (i) a reduction of lattice volume compressibility and a change of behavior of the tetragonal $c/a$ ratio take place above $P_1$; (ii) a four-fold symmetry-breaking lattice strain associated with lattice disorder; (iii) disappearance of two Raman active modes (at $\sim 180$ and $\sim 260$ cm$^{-1}$); and (iv) development of an asymmetric Fano lineshape for the $\sim 390$ cm$^{-1}$ mode. DFT indicates that the phase above $P_1$ is most likely non-magnetic. Exploring the similarities between iridate and cuprate physics, we argue that these observations are consistent with the emergence of a rotational symmetry-breaking electronic instability at $P_1$, providing hints for the avoided metallization under pressure and supporting the hypothesis of possible competing orders that are detrimental to superconductivity in this family. Alternative scenarios for the transition at $P_1$ are also suggested and critically discussed. Additional phonon and lattice anomalies in the tetragonal phase are observed at $P_2=30$ and $P_3=40$ GPa, indicating further competing phases that are stabilized at high pressures.
description: 10 pages, 10 figures + 4 Appendices
RETURN To an Order of the House for copies of all correspondence regarding Mr. J. W. Judd's claim to record a pre-emption on the north half of the north half of Section 7, Mayne Island. Also, copies of all correspondence regarding issuance of a Certificate of Improvement to W. T. Collinson on said land.
Creators: name: British Columbia. Legislative Assembly
Publisher: name: Victoria, BC : Government Printer
Year: 2014

Abstract
Divergences of Discrete States Amplitudes and Effective Lagrangian in 2D String Theory
Creators: name: Aref'eva, I. Ya.
name: Zubarev, A. P.
Publisher: name: arXiv
Year: 1992
Subjects: subject: High Energy Physics - Theory (hep-th)
subject: FOS: Physical sciences

description: Scattering amplitudes for discrete states in 2D string theory are considered. Pole divergences of tree-level amplitudes are extracted and residues are interpreted as renormalized amplitudes for discrete states. An effective Lagrangian generating renormalized amplitudes for open string is written and corresponding Ward identities are presented. A relation of this Lagrangian with homotopy Lie algebra is discussed.
Hidden strongly interacting massive particles
Creators: name: Heikinheimo, Matti
name: Langaeble, Kasper
name: Tuominen, Kimmo
Publisher: name: arXiv
Year: 2018
Subjects: subject: High Energy Physics - Phenomenology (hep-ph)
subject: FOS: Physical sciences

description: We consider dark matter as Strongly Interacting Massive Particles (SIMPs) in a hidden sector, thermally decoupled from the Standard Model heat bath. Due to its strong interactions, the number-changing processes of the SIMP lead to its thermalization at temperature $T_{\rm{D}}$ different from the visible sector temperature $T$, and subsequent decoupling as the Universe expands. We study the evolution of the dark SIMP abundance in detail and find that a hidden SIMP provides for a consistent framework for self-interacting dark matter. Thermalization and decoupling of a composite SIMP can be treated within the domain of validity of chiral perturbation theory unlike the simplest realizations of the SIMP, where the SIMP is in thermal equilibrium with the Standard Model.
description: 22 pages, 5 figures, minor revision to match version to appear in PRD
Similarities Between the Inner Solar System and the Planetary System of PSR B1257+12
Creators: name: Mazeh, Tsevi
name: Goldman, Itzhak
Publisher: name: arXiv
Year: 1994
Subjects: subject: Astrophysics (astro-ph)
subject: FOS: Physical sciences

description: We call attention to the surprising similarity between the newly discovered planetary system around PSR B1257+12 and the inner solar system. The similarity is in the ratios of the orbital radii and the masses of the three planets.
description: 4 pages including 1 figure. uuencoded compressed postscript file
RETURN To an Order of the House for a Return showing the present position of the settlement of the question of the title to the disputed lands in the Railway Belt, so far as the Town of Revelstoke is concerned, with names of original grantees, and a list of parties claiming under them, so far as is known, with descriptions of property and nature of title. Also, how many of these have made application through the Provincial Government for Dominion patents, with dates of applications and the action taken in respect of each.
Creators: name: British Columbia. Legislative Assembly
Publisher: name: Victoria, BC : Government Printer
Year: 2014

Abstract
Entanglement Witnesses from Single-Particle Interference
Creators: name: Scholak, T.
name: Mintert, F.
name: Müller, C. A.
Publisher: name: arXiv
Year: 2007
Subjects: subject: Quantum Physics (quant-ph)
subject: Mesoscale and Nanoscale Physics (cond-mat.mes-hall)
subject: FOS: Physical sciences

description: We describe a general method of realizing entanglement witnesses in terms of the interference pattern of a single quantum probe. After outlining the principle, we discuss specific realizations both with electrons in mesoscopic Aharonov-Bohm rings and with photons in standard Young's double-slit or coherent-backscattering interferometers.
description: 5 pages, 3 figures, epl2, uses pstricks.sty
Pressure Induced Hydration Dynamics of Membranes
Creators: name: Osterberg, F.
name: Kriechbaum, M.
name: Polcyn, A.
name: Skita, V.
name: Tate, M. W.
name: So, P. T. C.
name: Gruner, S. M.
name: Erramilli, Shyamsunder
Publisher: name: arXiv
Year: 1993
Subjects: subject: Condensed Matter (cond-mat)
subject: FOS: Physical sciences

description: Pressure-jump initiated time-resolved x-ray diffraction studies of dynamics of the hydration of the hexagonal phase in biological membranes show that (i) the relaxation of the unit cell spacing is non-exponential in time; (ii) the Bragg peaks shift smoothly to their final positions without significant broadening or loss in crystalline order. This suggests that the hydration is not diffusion limited but occurs via a rather homogeneous swelling of the whole lattice, described by power law kinetics with an exponent $ β= 1.3 \pm 0.2$.
description: REVTEX 3, 10 pages,3 figures(available on request),#0
Statistical Mechanics of Black Holes
Creators: name: Harms, B.
name: Leblanc, Y.
Publisher: name: arXiv
Year: 1992
Subjects: subject: High Energy Physics - Theory (hep-th)
subject: FOS: Physical sciences

description: We analyze the statistical mechanics of a gas of neutral and charged black holes. The microcanonical ensemble is the only possible approach to this system, and the equilibrium configuration is the one for which most of the energy is carried by a single black hole. Schwarzschild black holes are found to obey the statistical bootstrap condition. In all cases, the microcanonical temperature is identical to the Hawking temperature of the most massive black hole in the gas. U(1) charges in general break the bootstrap property. The problems of black hole decay and of quantum coherence are also addressed.
description: 21 pages
RETURN To an Address presented to His Honour the Lieutenant-Governor in Council, praying him to cause to be laid before the House all papers, letters, and writings relating to the security required to be deposited by the Columbia and Western Railway Company under section 3 of the "Columbia and Western Railway Subsidy Act, 1896," and all Orders in Council relating thereto.
Creators: name: British Columbia. Legislative Assembly
Publisher: name: Victoria, BC : Government Printer
Year: 2014

Abstract