cometadata/datacite-rtg-text-other-reclassification-records huggingface dataset:
Additional file 1 of Single-cell multi-omics profiling links dynamic DNA methylation to cell fate decisions during mouse early organogenesis
Creators: name: Clark, Stephen J.
name: Argelaguet, Ricard
name: Lohoff, Tim
name: Krueger, Felix
name: Drage, Deborah
name: Göttgens, Berthold
name: Marioni, John C.
name: Nichols, Jennifer
name: Reik, Wolf
Publisher: name: figshare
Year: 2022
Subjects: subject: Genetics
subject: FOS: Biological sciences

description: Additional file 1: Figure S1. General statistics and quality control metrics for Dnmt1-/-, Dnmt3a-/-, Dnmt3b-/- and WT scRNA-seq libraries. Figure S2. Cell type assignments for Dnmt1-/-, Dnmt3a-/-, Dnmt3b-/- and WT embryos. Figure S3. Inference of embryonic stage for Dnmt1-/-, Dnmt3a-/- and Dnmt3b-/- embryos. Figure S4. Expression changes of imprinted genes in Dnmt1-/-, Dnmt3a-/- and Dnmt3b-/- embryos. Figure S5. Expression changes of germline genes in Dnmt1-/-, Dnmt3a-/- and Dnmt3b-/- embryos. Figure S6. Expression changes of repetitive elements in Dnmt1-/-, Dnmt3a-/- and Dnmt3b-/- embryos. Figure S7. Comparison of differential expression changes with a published bulk RNA-seq study. Figure S8. Overview of the Tet-TKO chimaera assay. Figure S9. Mapping, cell type assignments and embryo staging for Tet-TKO scRNA-seq samples. Figure S10. Differential gene expression analysis between WT and Tet-TKO embryos. Figure S11. Quality control (QC) metrics for scNMT-seq Tet-TKO embryos. Figure S12. Cell type assignments of WT and Tet-TKO scNMT-seq cells. Figure S13. DNA methylation and chromatin accessibility at promoters and lineage-specific enhancers for different cell types in the Tet-TKO scNMT-seq experiment. Figure S14. Examples of individual cis-regulatory regions that are dsyregulated in Tet-TKO cells.
National Election Pool Poll: 2018 Ohio Election Day Exit Poll
Creators: name: ABC News
name: CBS News
name: CNN
name: National Election Pool (NEP)
name: NBC
Publisher: name: Roper Center for Public Opinion Research
Year: 2019

description: United States Senate vote (1); gubernatorial vote (1); would rather see Senate controlled by Democratic/Republican party (1); political party favorability (2); family financial situation (1); factors in deciding senatorial vote (1); first time voting in midterm (1); US health care system (1); Congress should/should not impeach Trump and remove him from office (1); most important issue facing country (1); condition of national economy (1); government handling of opioid drug abuse (1); party identification (1); political ideology (1); investigation into Russian interference in 2016 election justified/politically motivated (1); sexual harassment (1); effect of last year's tax laws on personal finances (1); when US Senate vote was decided (1); effect of Trump's trade policies on local economy (1); Trump job performance (1); Trump's immigration policies too tough/not tough enough (1); household labor union membership (1); 2016 presidential vote (1); importance of electing more women to public office (1).
$2+1$ Covariant Lattice Theory and t'Hooft's Formulation
Creators: name: Waelbroeck, Henri
name: Zapata, Jose A.
Publisher: name: arXiv
Year: 1996
Subjects: subject: General Relativity and Quantum Cosmology (gr-qc)
subject: FOS: Physical sciences

description: We show that 't Hooft's representation of (2+1)-dimensional gravity in terms of flat polygonal tiles is closely related to a gauge-fixed version of the covariant Hamiltonian lattice theory. 't Hooft's gauge is remarkable in that it leads to a Hamiltonian which is a linear sum of vertex Hamiltonians, each of which is defined modulo $2 π$. A cyclic Hamiltonian implies that ``time'' is quantized. However, it turns out that this Hamiltonian is {\it constrained}. If one chooses an internal time and solves this constraint for the ``physical Hamiltonian'', the result is not a cyclic function. Even if one quantizes {\it a la Dirac}, the ``internal time'' observable does not acquire a discrete spectrum. We also show that in Euclidean 3-d lattice gravity, ``space'' can be either discrete or continuous depending on the choice of quantization. Finally, we propose a generalization of 't Hooft's gauge for Hamiltonian lattice formulations of topological gravity dimension 4.
description: 10 pages of text. One figure available from J.A. Zapata upon request
Comparing static and dynamic representations: Secondary mathematics teacher candidates’ specialized content knowledge, argumentation schemes, and technological perspectives
Creators: name: ZAMBAK, VECIHI SERBAY
name: KULAGA (USA), KIERA
Publisher: name: Review of Science, Mathematics and ICT Education
Year: 2025
Subjects: Teacher candidates, specialized content knowledge, technological perspectives, argumentation schemes, dynamic geometry

description: This preliminary study investigates how teacher candidates' (TCs) specialized content knowledge (SCK) is associated with their technological perspectives and argumentation schemes in interpreting dynamic and static geometry representations. An embedded unit single case study design was employed to analyze TCs' engagement with two mathematical tasks. Qualitative content analysis of TCs' responses highlighted patterns in their evaluations of invalid mathematical arguments and insights regarding different technologies. Preliminary findings suggest an interrelation between TCs' SCK and argumentation schemes. The study proposes that dynamic geometry tasks that encourage analytical argumentation can support TCs' content knowledge and argumentation skills.
description: Review of Science, Mathematics and ICT Education, Forthcoming papers
The effect of colored noise on heteroclinic orbits
Creators: name: Angilella, Jean-Régis
Publisher: name: arXiv
Year: 2019
Subjects: subject: Classical Physics (physics.class-ph)
subject: FOS: Physical sciences

description: The dynamics of a weakly dissipative Hamiltonian system submitted to stochastic perturbations has been investigated by means of asymptotic methods. The probability of noise-induced separatrix crossing, which drastically changes the fate of the system, is derived analytically in the case where noise is an additive Kubo-Anderson process. This theory shows how the geometry of the separatrix, as well as the noise intensity and correlation time, affect the statistics of crossing. Results can be applied to a wide variety of systems, and are valid in the limit where the noise correlation time scale is much smaller than the time scale of the undisturbed Hamiltonian dynamics.
title: The Material-Media Histories of Maralinga
Creators: name: Burns, David Benjamin
Publisher: name: Goldsmiths, University of London
Year: 2020

description: This practice-based thesis proposes that the nuclear test site at Maralinga, South Australia is a reluctant and traumatic archive comprised of material and media. The material archive is the physical evidence of the tests and is mostly inaccessible, interred in radioactive burial trenches. The media archive is dispersed and diverse and includes photography, maps, film, documents, and objects. Combined, the two archives constitute the Material-Media Histories of Maralinga. It is an archive of the recent nuclear past and the radioactive deep future; an archive of secrecy and betrayal, of disrupted songlines and broken futures. The thesis begins with the 2014 return of the land to the Maralinga Tjarutja people. The status of the land – highly mediated and remediated – is questioned along with the intentions of the government and the Australian Defence Force. The first chapter examines the colonial declarations of terra nullius that rendered invisible the Aboriginal people, customs, agriculture, architecture, and economies, thereby creating the juridical conditions for the future establishment of Maralinga. The second chapter focuses on the issues of visibility as they relate to Maralinga as a nuclear weapons testing site. The chapter begins with a detailed examination of Tufi, an unused nuclear test site that could be the most resilient – and misleading – legacy of Maralinga. The final chapter traces the land as a political medium from the first moments of nuclear colonisation to a history of Aboriginal acts of resistance. The chapter concludes with a conceptualisation of remediation as it pertains to the history and future of Maralinga, beyond the simple definition of land rejuvenation. The practical component of this thesis situates a new photographic series alongside, and often in opposition to, an extensive collection of found media. Together, this material-media archive forms the basis for my conceptual insights on Maralinga. The archive is sampled throughout the thesis in Volume 1 and catalogued in full in Volume 2.
De novo production of eumelanin in a fermentative process with Corynebacterium glutamicum
Creators: name: Kurpejović, Eldin
name: Karcioglu, Ceren
name: Abdullahoglu, Emre
name: Sayar, Nihat Alpagu
name: Wendisch, Volker F.
name: Akbulut, Berna Sariyar
Publisher: name: Taylor & Francis
Year: 2025
Subjects: subject: Space Science
subject: Biotechnology
subject: Ecology
subject: FOS: Biological sciences
subject: Sociology
subject: FOS: Sociology
subject: Biological Sciences not elsewhere classified
subject: Inorganic Chemistry
subject: FOS: Chemical sciences
subject: Infectious Diseases
subject: FOS: Health sciences

description: Melanin, a versatile and valuable pigment with diverse industrial applications, has attracted significant interest owing to its unique properties ranging from UV protection to antioxidant capabilities. Despite its potential, traditional methods of melanin production often face challenges related to scalability and environmental impact. Available microbial production systems, which offer sustainability, commonly pose issues related to safety, productivity, cost-effectiveness. Here we present a safe and cost-effective microbial production system with the industrial workhorse Corynebacterium glutamicum to overcome the limitations of current production strategies. Here, melanin production was achieved in a chemically defined medium directly from glucose circumventing the addition of its precursor l-tyrosine, which reduced the reliance on complex and expensive substrates. The produced pigment displayed properties that highly resembled that of eumelanin when analyzed using HPLC, UV-visible spectrophotometry, FTIR, and SEM. Guided by model-based optimization, a melanin titer of 1.03 g/L was reached in shake flasks. Finally, this fermentative production was scaled-up in a 6-L bioreactor and its potential for bio manufacturing was demonstrated. Melanin titer was only 0.32 ± 0.04 g/L after 72 h, which was lower than the titer obtained in shake flasks. This reduction was likely due to limited l-DOPA oxidation under the bioreactor operation conditions.
On solutions of the Schlesinger Equations in Terms of $Θ$-Functions
Creators: name: Kitaev, A. V.
name: Korotkin, D. A.
Publisher: name: arXiv
Year: 1998
Subjects: subject: Mathematical Physics (math-ph)
subject: General Relativity and Quantum Cosmology (gr-qc)
subject: High Energy Physics - Theory (hep-th)
subject: Exactly Solvable and Integrable Systems (nlin.SI)
subject: FOS: Physical sciences

description: In this paper we construct explicit solutions and calculate the corresponding $τ$-function to the system of Schlesinger equations describing isomonodromy deformations of $2\times 2$ matrix linear ordinary differential equation whose coefficients are rational functions with poles of the first order; in particular, in the case when the coefficients have four poles of the first order and the corresponding Schlesinger system reduces to the sixth Painlevé equation with the parameters $1/8, -1/8, 1/8, 3/8$, our construction leads to a new representation of the general solution to this Painlevé equation obtained earlier by K. Okamoto and N. Hitchin, in terms of elliptic theta-functions.
Structure and convergence of Poincare-like normal forms
Creators: name: Louies, S.
name: Brenig, L.
Publisher: name: arXiv
Year: 1997
Subjects: subject: Chaotic Dynamics (nlin.CD)
subject: FOS: Physical sciences

description: The general term of the Poincare normalizing series is explicitly constructed for non-resonant systems of ODE's in a large class of equations. In the resonant case, a non-local transformation is found, which exactly linearizes the ODE's and whose series expansion always converges in a finite domain. Examples are treated.
description: 11 pages, no figures, latex. To be published in Phys. Lett. A
The laboratory quality assurance component of environmental monitoring : a case study involving subaqueous tailings research
Creators: name: Deverall, Rob
name: Maynard, Allan W.
name: Thomas, Katherine
Publisher: name: The University of British Columbia
Year: 2010

description: Assessments concerning the environmental impact of mining projects are highly dependent on reliable low-level analyses of samples collected from the receiving environment. The analytical program must be designed to maximize the reliability of the data and also provide information concerning the reproducibility, accuracy, specificity, and sensitivity of test results. In Canada, the MEND (Mine Environment Neutral Drainage) Program has sponsored projects pertaining to comprehensive monitoring of subaqueous tailings disposal. Lake sediments, lake water, and interstitial water samples were collected and then analyzed for a host of parameters (metals, anions, physical tests, etc.). The analyses were carried out using state-of-the-art procedures and instruments. A comprehensive quality assurance-quality control (QA-QC) program was incorporated into the study with all QA-QC subsequently reported. The studies provide an ideal example of what is required, in terms of analytical approach, for projects that require extremely low detection levels and are subject to rigorous scrutiny by regulatory agencies, the scientific community, and the public. This paper presents the QA-QC approach taken for the subaqueous tailings disposal work by discussing method selection, determination of detection limits, use of reference materials, laboratory and field QC samples, and criteria for assessing QC results. Representative QC data are presented to demonstrate validation of methodology and to show that pre-determined criteria were met. The results on all blanks were below limits of detection, the results on reference materials met suppliers 95% acceptance criteria and replicate results agreed to within +15% of a calculated mean.
Supply chain coordination with strategic customers: Yield uncertainty and replenishment tactic
Creators: name: Cai, Jianhu
name: Sun, Haining
name: Wei, Bo
Publisher: name: Taylor & Francis
Year: 2022
Subjects: Space Science
Environmental Sciences not elsewhere classified
Biological Sciences not elsewhere classified
Marine Biology
Science Policy

description: Supply capability and strategic customer behavior jointly influence the operations management in a supply chain (SC). Few studies have been conducted to reflect such a composite impact from the supply side and the demand side. The aim of our article is to fill this gap by focusing on the SC facing strategic customers under demand and yield uncertainty. Specially, we emphasize the importance of replenishment tactic in keeping a stable supply level, and discuss the corresponding impact on the input quantity decision of the SC under yield uncertainty. Two scenarios are investigated: (i) without the market service-level (MSL) constraint and (ii) with the MSL constraint. The SCs under different scenarios are coordinated by various contracts. Meanwhile, by adjusting corresponding contract parameters, the SC members can achieve Pareto improvement. The numerical analyses are used to examine the validity of the conclusions derived.
Land reclamation strategy for the Keenleyside Powerplant project : creating opportunity landscapes
Creators: name: Baker, Doug
name: Jackson, J. Leah
Publisher: name: The University of British Columbia
Year: 2010

description: The Keenleyside Powerplant project requires an estimated 1.9 million cubic meters of material to be excavated over a 6 year period to facilitate the development of a powerhouse and intake structures adjacent to the Keenleyside dam near Castlegar. The excavated material is to be used for both construction purposes and for spoil. A 65 hectare area on the north bank of the Arrow Reservoir, upstream of the Keenleyside dam, has been designated as the spoil site. Much of this area was used for the original construction of the dam in 1972, and was never reclaimed. A progressive, staged reclamation strategy is proposed by B.C. Hydro that identifies opportunity landscapes for recreation and wildlife enhancement along the Arrow reservoir. The spoil material from the powerhouse excavation is sequenced with nine potential areas in which new landscapes can be created. Proposed landscapes include wetland habitat with nature trails, a day-use recreation area, and a beach area. The challenge of the reclamation strategy is to coordinate the removal of materials from the construction site, such that material suitable for construction needs is stockpiled nearby, and spoil material is hauled to designated sites for reclamation. Since the reclaimed sites have specific requirements for soils, the spoil must be sequenced with the specifications of each new landscape. The reclamation strategy is divided into 4 major stages over the construction period that outline the timing of the materials and volumes available for spoil placement. A GIS is used as a data base to model the movement of materials and produce a digital terrain model (DTM) of the desired landscapes. The DTM will also be used as a tool for public input into the project to create final landscape designs for the spoil material.
Entropy potential and Lyapunov exponents
Creators: name: Lepri, Stefano
name: Politi, Antonio
name: Torcini, Alessandro
Publisher: name: arXiv
Year: 1997
Subjects: subject: Chaotic Dynamics (nlin.CD)
subject: FOS: Physical sciences

description: According to a previous conjecture, spatial and temporal Lyapunov exponents of chaotic extended systems can be obtained from derivatives of a suitable function: the entropy potential. The validity and the consequences of this hypothesis are explored in detail. The numerical investigation of a continuous-time model provides a further confirmation to the existence of the entropy potential. Furthermore, it is shown that the knowledge of the entropy potential allows determining also Lyapunov spectra in general reference frames where the time-like and space-like axes point along generic directions in the space-time plane. Finally, the existence of an entropy potential implies that the integrated density of positive exponents (Kolmogorov-Sinai entropy) is independent of the chosen reference frame.
description: 20 pages, latex, 8 figures, submitted to CHAOS
Additional file 1: of Feasibility, acceptability and efficacy of a text message-enhanced clinical exercise rehabilitation intervention for increasing â whole-of-dayâ activity in people living with and beyond cancer
Creators: name: Gomersall, Sjaan
name: Skinner, Tina
name: Winkler, Elisabeth
name: Healy, Genevieve
name: Eakin, Elizabeth
name: Fjeldsoe, Brianna
Publisher: name: figshare
Year: 2019
Subjects: subject: Biochemistry
subject: Space Science
subject: Medicine
subject: 39999 Chemical Sciences not elsewhere classified
subject: FOS: Chemical sciences
subject: Sociology
subject: FOS: Sociology
subject: 69999 Biological Sciences not elsewhere classified
subject: FOS: Biological sciences
subject: Developmental Biology
subject: Science Policy
subject: 60506 Virology
subject: Computational Biology

description: Table S1. activPAL protocol. Described activPAL protocol in detail. (DOCX 17 kb)
From vacuum field equations on principal bundles to Einstein equations with fluids
Creators: name: Montesinos-Velasquez, M.
name: Matos, T.
Publisher: name: arXiv
Year: 1996
Subjects: subject: General Relativity and Quantum Cosmology (gr-qc)
subject: FOS: Physical sciences

description: In the present work we show that the Einstein equations on $M$ without cosmological constant and with perfect fluid as source, can be obtained from the field equations for vacuum with cosmological constant on the principal fibre bundle $P(\frac{1}{I} M,U(1))$, $M$ being the space-time and $I$ the radius of the internal space $U(1)$.
description: 7 pages, Latex, 0 figures
Sensing Social Media Signals for Cryptocurrency News
Creators: name: Beck, Johannes
name: Huang, Roberta
name: Lindner, David
name: Guo, Tian
name: Zhang, Ce
name: Helbing, Dirk
name: Antulov-Fantulin, Nino
Publisher: name: arXiv
Year: 2019
Subjects: subject: Social and Information Networks (cs.SI)
subject: Machine Learning (cs.LG)
subject: Machine Learning (stat.ML)
subject: FOS: Computer and information sciences

description: The ability to track and monitor relevant and important news in real-time is of crucial interest in multiple industrial sectors. In this work, we focus on the set of cryptocurrency news, which recently became of emerging interest to the general and financial audience. In order to track relevant news in real-time, we (i) match news from the web with tweets from social media, (ii) track their intraday tweet activity and (iii) explore different machine learning models for predicting the number of the article mentions on Twitter within the first 24 hours after its publication. We compare several machine learning models, such as linear extrapolation, linear and random forest autoregressive models, and a sequence-to-sequence neural network. We find that the random forest autoregressive model behaves comparably to more complex models in the majority of tasks.
description: full version of the paper, that is accepted at ACM WWW '19 Conference, MSM'19 Workshop
Transfer matrices, non-Hermitian Hamiltonians and Resolvents: some spectral identities
Creators: name: Molinari, Luca
Publisher: name: arXiv
Year: 1998
Subjects: subject: Mathematical Physics (math-ph)
subject: FOS: Physical sciences

description: I consider the N-step transfer matrix T for a general block Hamiltonian, with eigenvalue equation L_n ψ_{n+1} + H_n ψ_n + L_{n-1}^\dagger ψ_{n-1} = E ψ_n where H_n and L_n are matrices, and provide its explicit representation in terms of blocks of the resolvent of the Hamiltonian matrix for the system of length N with boundary conditions ψ_0 =ψ_{N+1} =0. I then introduce the related Hamiltonian for the case ψ_0 = z^{-1} ψ_N and ψ_{N+1} = z ψ_1, and provide an exact relation between the trace of its resolvent and Tr(T-z)^{-1}, together with an identity of Thouless type connecting Tr(\log |T|) with the Hamiltonian eigenvalues for z=e^{iϕ}. The results are then extended to T^\dagger T by showing that it is itself a transfer matrix. Besides their own mathematical interest, the identities should be useful for an analytical approach in the study of spectral properties of a physically relevant class of transfer matrices. P.A.C.S.: 02.10.Sp (theory of matrices), 05.60 (theory of quantum transport), 71.23 (Anderson model), 72.17.Rn (Quantum localization)
description: plain TeX, 12 pages; to appear on Journal of Physics A: Math.Gen
Stable multi-ring and rotating solitons in two-dimensional spin-orbit coupled Bose-Einstein condensates with a radially-periodic potential
Creators: name: Kartashov, Yaroslav V.
name: Zezyulin, Dmitry A.
Publisher: name: arXiv
Year: 2019
Subjects: subject: Quantum Gases (cond-mat.quant-gas)
subject: Pattern Formation and Solitons (nlin.PS)
subject: FOS: Physical sciences

description: We consider two-dimensional spin-orbit coupled atomic Bose-Einstein condensate in a radially-periodic potential. The system supports different types of stable self-sustained states including radially-symmetric vorticity-carrying modes with different topological charges in two spinor components that may have multiring profiles and at the same time remain remarkably stable for repulsive interactions. Solitons of the second type show persistent rotation with constant angular frequency. They can be stable for both repulsive and attractive interatomic interactions. Due to inequivalence between clockwise and counterclockwise rotation directions introduced by spin-orbit coupling, the properties of such solitons strongly differ for positive and negative rotation frequencies. Collision of solitons located in the same or different rings is accompanied by change of the rotation frequency that depends on the phase difference between colliding solitons.
description: 8 pages, 6 figures, including Supplementary Material
In Search of Culturally Sustaining Music Pedagogy: Adolescent Music Students’ Perceptions of Singing and Music Teaching
Creators: Good-Perkins, Emily
Publisher: name: Columbia University
Year: 2018
Subjects: Music--Instruction and study
Music students
Singing--Instruction and study
Students--Attitudes

description: The diversity present within K-12 classrooms in the United States presents teachers with students from many backgrounds and musical traditions. Traditional undergraduate music education programs which prioritize the Western canon provide little opportunity for students to address diversity, both in pedagogy and in content. Prospective music teachers in the choral or general music areas experience vocal education that focuses primarily on the classical bel canto vocal technique. This education fails to prepare teachers to teach students from diverse backgrounds and musical traditions. Because music plays an important role in adolescents’ identity formation, teachers who are unprepared to recognize and teach diverse vocal styles may unknowingly alienate or silence their students. The purpose of this study was to develop an understanding of how two groups of music students, in early adolescence, and from a diverse urban public school, perceive the singing and the music teaching in their general music classrooms. By discovering their perspectives, I hoped to shed light on the ways in which music teaching influenced their musical, vocal, and cultural identities, particularly during the malleable time of adolescence. Over the course of three months, I conducted semi-structured interviews with 14 students and two teachers as well as twice-weekly classroom observations. Three research questions informed the data collection process: (1) How do students in a diverse urban public school describe their own singing and musical background? (2) How do they describe the vocal (and music) teaching in their general music class? (3) How do they describe an effective or ideal music teacher? The interview data and field notes from the observations were coded, organized, and analyzed into the following categories: (1) Music and Self Expression; (2) Music and Family; (3) Culturally Congruent and Incongruent Teaching; (4) Student Vocal Profiles; (5) If They Could Teach the Music Class, How Would They Teach? The overarching conclusion from this study is that the congruence or incongruence of a teacher’s musical epistemology — “the norms, logic, values, and way of knowing” music (Domínguez, 2017, p. 233) — along with the musical epistemologies of her students was the primary factor for student exclusion or empowerment in the classroom.
An invertible transform for efficient string matching in labeled digraphs
Creators: name: Nellore, Abhinav
name: Nguyen, Austin
name: Thompson, Reid F.
Publisher: name: arXiv
Year: 2019
Subjects: subject: Data Structures and Algorithms (cs.DS)
subject: FOS: Computer and information sciences

description: Let $G = (V, E)$ be a digraph where each vertex is unlabeled, each edge is labeled by a character in some alphabet $Ω$, and any two edges with both the same head and the same tail have different labels. The powerset construction gives a transform of $G$ into a weakly connected digraph $G' = (V', E')$ that enables solving the decision problem of whether there is a walk in $G$ matching an arbitrarily long query string $q$ in time linear in $|q|$ and independent of $|E|$ and $|V|$. We show $G$ is uniquely determined by $G'$ when for every $v_\ell \in V$, there is some distinct string $s_\ell$ on $Ω$ such that $v_\ell$ is the origin of a closed walk in $G$ matching $s_\ell$, and no other walk in $G$ matches $s_\ell$ unless it starts and ends at $v_\ell$. We then exploit this invertibility condition to strategically alter any $G$ so its transform $G'$ enables retrieval of all $t$ terminal vertices of walks in the unaltered $G$ matching $q$ in $O(|q| + t \log |V|)$ time. We conclude by proposing two defining properties of a class of transforms that includes the Burrows-Wheeler transform and the transform presented here.
description: 13 pages, 3 figures; v7 is the content of the camera-ready copy for CPM 2021 incorporating reviewer feedback
Additional file 1: of Understanding microbial community dynamics to improve optimal microbiome selection
Creators: name: Wright, Robyn
name: Gibson, Matthew
name: Christie-Oleza, Joseph
Publisher: name: figshare
Year: 2019
Subjects: subject: Biochemistry
subject: Space Science
subject: Microbiology
subject: FOS: Biological sciences
subject: Molecular Biology
subject: Sociology
subject: FOS: Sociology
subject: 69999 Biological Sciences not elsewhere classified
subject: 80699 Information Systems not elsewhere classified
subject: FOS: Computer and information sciences
subject: 19999 Mathematical Sciences not elsewhere classified
subject: FOS: Mathematics
subject: Inorganic Chemistry
subject: FOS: Chemical sciences
subject: 110309 Infectious Diseases
subject: FOS: Health sciences

description: Supplementary information and supplementary materials and method: Tables S1, S4 and Figures S1, S9. (DOCX 1240 kb)
Mentoring as a professional development activity for administrators in Catholic education
Creators: name: Hill, Peter
Publisher: name: Australian Catholic University
Year: 1998

description: The purpose of this study is to consider the possibilities of mentoring as a professional development activity for those in the role of Assistant to the Principal, Administration (APA). Mentoring is considered worthy of investigation, as it appears to be a professional development activity that is self-directed and capable of meeting the individual needs of the practitioners engaged in the role. Professional development for many administrators appears to have become a laborious task of attending courses and collecting certificates. As a professional development activity, mentoring is a flexible alternative in the provision professional and personal growth opportunities for administrators within an educational context. The aim of the study is to provide an understanding of mentoring as a professional development opportunity for administrators and to explore in one specific context the receptivity of those in the role of APA, to the concept of formal mentoring. This study utilises the research methodology of action research and the process of reflective deliberation. The study was conducted over a period of six months involving six participants who are currently working in Catholic systemic primary schools in the role of APA. The conclusions of the study identifies a shift in understanding about mentoring and support for mentoring as a professional development activity for those in the role of APA.
In Socialism's Twilight: Michael Walzer and the politics of the long New Left
Creators: Marcus, David
Publisher: name: Columbia University
Year: 2019
Subjects: subject: History
subject: Socialism
subject: Political science
subject: FOS: Political science

description: In Socialism’s Twilight is a study of the thought and politics of Michael Walzer and the travails of democratic socialism in the second half of the twentieth century. Using the methods of intellectual and political history, it situates Walzer’s political theory and criticism in the context of what might be called the “long New Left,” the overlapping generations of radicals that stretched from the beginning of the Cold War to its end and that supplemented the left’s traditional commitments to socialism with a politics of national liberation, radical democracy, and liberalism. By doing so, the dissertation hopes to trace the development not only of Walzer’s own commitments but also those of the socialist left. Caught in a period of frequent defeat and bitter controversy, socialists found themselves forced into a state of constant revision, as they moved from the libertarian socialism of the 1950s and 60s to the social democratic coalitions of the 1970s and 80s to the liberalism and humanitarianism of the 1990s and 2000s. Opening with the collapse of the Popular Front after World War II, the dissertation follows Walzer’s search for a new radicalism with intellectuals around Dissent and through his involvement in civil rights and antiwar activism. Examining his arguments with an older left over the Vietnam War and with a younger left over Israel, it then tracks Walzer’s movement toward the left-liberal politics of the 1970s and it concludes with chapters on his major works of normative theory and his later humanitarian interventionism. By revisiting his career, In Socialism’s Twilight seeks to identify some of the competing impulses of socialists in the second half of the twentieth century and explore the sometimes creative, sometimes unsatisfying ways they engaged with them. It also hopes to ask some questions facing the left today: How did these socialists reconcile their early commitment to radical democracy with their later one to the welfare state? How did they pair their socialism with a politics of national liberation? How did a figure like Walzer, in part radicalized by the Vietnam War, end up with a more positive view of American force? And how do the often conflicting ideals of the long New Left sit with the socialism of a new generation?
Quantization of Point Particles in 2+1 Dimensional Gravity and Space-Time Discreteness
Creators: name: Hooft, G. 't
Publisher: name: arXiv
Year: 1996
Subjects: subject: General Relativity and Quantum Cosmology (gr-qc)
subject: FOS: Physical sciences

description: By investigating the canonical commutation rules for gravitating quantized particles in a 2+1 dimensional world it is found that these particles live on a space-time lattice. The space-time lattice points can be characterized by three integers. Various representations are possible, the details depending on the topology chosen for energy-momentum space. We find that an $S_2\times S_1$ topology yields a physically most interesting lattice within which first quantization of Dirac particles is possible. An $S_3$ topology also gives a lattice, but does not allow first quantized particles.
description: 23 pages Plain TeX, 3 Figures
In Situ Deacidification of Vernacular Wallpaper
Creators: Loveman, Kayla
Publisher: name: Columbia University
Year: 2012
Subjects: subject: Architecture
subject: FOS: Civil engineering

description: This thesis involved testing common proprietary deacidification sprays on vernacular wallpaper in situ. Inexpensive, mass-produced wallpaper is commonly overlooked by many conservators, whose efforts are more often directed toward the higher quality wallpapers that hang in the homes of historic luminaries. Cheaper wallpaper is just as relevant as these upscale counterparts, yet its materiality makes it more ephemeral and, therefore, in need of preservation efforts. Vernacular wallpaper was first produced in the middle of the 19th century, when wood pulp was introduced to the manufacturing process. A cheap alternative to cotton rags, wood pulp drove down the cost of production, making a traditionally expensive product available to nearly all Americans. The presence of wood pulp, however, also causes the wallpaper to deteriorate more quickly as the result of a higher acid content. Deacidification is a conservation method that was developed during the mid-20th century to preserve deteriorating library collections. By neutralizing the acids present in paper and providing an alkaline reserve to protect against future acids, deacidification is believed to prolong the lifespan of wood pulp paper. Although paper conservators usually treat wallpaper in a laboratory setting, there are cases in which its removal from the wall may be deemed inappropriate. Professional laboratory conservation may also be prohibitively expensive for smaller, low budget house museums that often include vernacular wallpaper. Proprietary deacidification products were therefore chosen for testing. Vernacular wallpaper was provided by The Lower East Side Tenement Museum in New York City, where thousands of working class immigrants lived and worked between the 1860s and 1930s. The museum founders discovered the building in the 1980s with its residential floors exactly as they had been left when the building was condemned in 1935. The multiple layers of deteriorating wallpaper that remained in situ have become a defining feature of the museum and are preserved as integral architectural finishes. For this reason, and because most of the wallpaper is extremely brittle, in situ treatment is preferred. Three spray products were tested on the wallpaper at the Tenement Museum. In order to be considered successful, these products were required to neutralize wallpaper samples without significantly altering their appearance. One product performed successfully on most samples, another achieved the highest pH measurements and also caused the most visual change, and the third was ineffective and inconsistent. Further research on the long-term effects of deacidification is necessary before any product can be recommended for use.
National Election Pool Poll: 2018 Texas Election Day Exit Poll
Creators: name: ABC News
name: CBS News
name: CNN
name: National Election Pool (NEP)
name: NBC
Publisher: name: Roper Center for Public Opinion Research
Year: 2019

description: United States Senate vote (1); gubernatorial vote (1); length of residence in state (1); would rather see House controlled by Democratic/Republican party (1); would rather see Senate controlled by Democratic/Republican party (1); senatorial candidates' positions too liberal/too conservative/about right (2); Ted Cruz favorability (1); political party favorability (2); Senate Majority Leader Mitch McConnell favorability (1); Beto O'Rourke favorability (1); House Minority Leader Nancy Pelosi favorability (1); family financial situation (1); factors in deciding senatorial vote (2); first time voting in midterm (1); household gun ownership (1); US health care system (1); Democratic/Republican party would better protect health care for people with pre-existing conditions (1); building wall along entire US-Mexico border (1); Congress should/should not impeach President Donald Trump and remove him from office (1); most important issue facing country (1); approve/disapprove of professional athletes kneeling during national anthem (1); condition of national economy (1); party identification (1); political ideology (1); racial favoritism (1); investigation into Russian interference in 2016 election justified/politically motivated (1); sexual harassment (1); effect of last year's tax laws on personal finances (1); when US Senate vote was decided (1); effect of Trump's trade policies on local economy (1); Trump job performance (1); Trump's immigration policies too tough/not tough enough (1); 2016 presidential vote (1); importance of electing more women to public office (1).
Quantum Graphs: A simple model for Chaotic Scattering
Creators: name: Kottos, Tsampikos
name: Smilansky, Uzy
Publisher: name: arXiv
Year: 2002
Subjects: subject: Chaotic Dynamics (nlin.CD)
subject: Condensed Matter (cond-mat)
subject: FOS: Physical sciences

description: We connect quantum graphs with infinite leads, and turn them to scattering systems. We show that they display all the features which characterize quantum scattering systems with an underlying classical chaotic dynamics: typical poles, delay time and conductance distributions, Ericson fluctuations, and when considered statistically, the ensemble of scattering matrices reproduce quite well the predictions of appropriately defined Random Matrix ensembles. The underlying classical dynamics can be defined, and it provides important parameters which are needed for the quantum theory. In particular, we derive exact expressions for the scattering matrix, and an exact trace formula for the density of resonances, in terms of classical orbits, analogous to the semiclassical theory of chaotic scattering. We use this in order to investigate the origin of the connection between Random Matrix Theory and the underlying classical chaotic dynamics. Being an exact theory, and due to its relative simplicity, it offers new insights into this problem which is at the fore-front of the research in chaotic scattering and related fields.
description: 28 pages, 13 figures, submitted to J. Phys. A Special Issue -- Random Matrix Theory
Additional file 6 of New insights into the evolution and functional divergence of the CIPK gene family in Saccharum
Creators: name: Su, Weihua
name: Ren, Yongjuan
name: Wang, Dongjiao
name: Huang, Long
name: Fu, Xueqin
name: Ling, Hui
name: Su, Yachun
name: Huang, Ning
name: Tang, Hanchen
name: Xu, Liping
name: Que, Youxiong
Publisher: name: figshare
Year: 2020
Subjects: subject: Genetics
subject: FOS: Biological sciences

description: Additional file 6: Table S5. Primers used in this study.
Transformations of discrete isothermic nets and discrete cmc-1 surfaces in hyperbolic space
Creators: name: Hertrich-Jeromin, Udo
Publisher: name: arXiv
Year: 1999
Subjects: subject: Differential Geometry (math.DG)
subject: Dynamical Systems (math.DS)
subject: FOS: Mathematics
subject: 53A99

description: Using a quaternionic calculus, the Christoffel, Darboux, Goursat, and spectral transformations for discrete isothermic nets are described, with their interrelations. The Darboux and spectral transformations are used to define discrete analogs for cmc-1 surfaces in hyperbolic space and to obtain a discrete version of Bryant's Weierstrass type representation.
description: 20 pages, plain TeX, 9 PostScript Figures
Resonant Collisions in Four Dimensional Reversible Maps: A Description of Scenarios
Creators: name: Lahiri, A.
name: Bhowal, A.
name: Roy, T. K.
Publisher: name: arXiv
Year: 1997
Subjects: subject: Chaotic Dynamics (nlin.CD)
subject: FOS: Physical sciences

description: We define a resonant collision of order k(geq 1) in a family of four-dimensional reversible maps. For any specified k, the bifurcation secnario is the collection of the different possible types of bifurcation of a symmetric fixed point that may be encountered through various choices of parameters describing the family of maps under consideration. We adopt a perturbative approach, coupled with numerical iterations around orbits obtained perturbatively, to explore phase space structures in the immediate vicinity of a resonant collision and thereby to obtain a description of the possible scenarios for different values of k. The phase space structures typically involve bifurcating periodic orbits, families of invariant curves, and tori, and present interesting possibiliries, especially around the 'secondary bifurcations' of the periodic orbits (see below). Based on the results of the perturbative and numerical approach we conjecture that three distinct scenarios are involved for the cases k = 2, 3, 4 respectively, while there exists a fourth distinctive scenario common to all k > 4, and we present what we believe to be a reasonably exhaustive description of these scenarios. The case k = 1 involves bifurcations of fixed points rather than of periodic orbits, and has been investigated numerically in a previous paper.
description: 35 pages plain tex, figures are available on request to tarun@tnp.saha.ernet.in
In pursuit of conjugation in one-dimension: Synthetic studies of oligomeric and polymeric organic materials
Creators: Sedbrook, Danielle F.
Publisher: name: Columbia University
Year: 2013
Subjects: Chemistry

description: Chapter 1. Ring-Opening Alkyne Metathesis Polymerization of Dibenzocyclooctynes
A molybdenum(VI) propylidyne substituted with bidentate phenoxides will react with dibenzocyclooctynes in living ring-opening alkyne metathesis polymerization (ROAMP). The corresponding monodentate phenoxides do not yield well-controlled polymerizations. However, if the substrate in the ROAMP reaction is an aliphatic cyclooctyne, uncontrolled, non-living polymerizations take place in all cases.
Chapter 2. Ring-Opening Alkyne Metathesis via a Tungstenatetrahedrane Intermediate
A cyclopropenone-modified dibenzocyclooctyne will undergo a single ring opening alkyne metathesis reaction in the presence of Schrock's tris(tert-butoxy)tungsten(VI) neopentylidyne--a highly active alkyne metathesis catalyst. Despite the enormous amount of ring strain present in and related diphenycyclooctadiynes, these compounds do not readily undergo ring-opening alkyne metathesis polymerization (ROAMP), even with the most active alkyne metathesis catalysts available. The ring-opening of 1 proceeds via a tungstenatetrahedrane intermediate. Because of its sluggish reactivity, we were able to follow the ring-opening reaction by NMR to gain mechanistic insight into this remarkable behavior.
Chapter 3. Functionaliztion of Diphenyloligoenes
Bromine and carboxylic acid substituted α,ω-diphenyl-µ,ν-dicyano-oligoenes (DPDCn) were synthesized up to 9 and 7 olefin units in length, respectively. The carboxylic acid functionalized oligoenes (DPDCn-CO2H) are aligned through hydrogen bonding to DMF in the solid state. These can also be used to direct monolayer formation of Fe3O4 on single crystalline, 100 Gallium Arsenide.
Spacetime modes of relativistic stars
Creators: name: Andersson, Nils
name: Kokkotas, Kostas D.
name: Schutz, Bernard F.
Publisher: name: arXiv
Year: 1996
Subjects: subject: General Relativity and Quantum Cosmology (gr-qc)
subject: FOS: Physical sciences

description: The problem of relativistic stellar pulsations is studied in a somewhat ad hoc approximation that ignores all fluid motions. This {\em Inverse Cowling Approximation} (ICA) is motivated by two observations: 1) For highly damped ($w$-mode) oscillations the fluid plays very little role. 2) If the fluid motion is neglected the problem for polar oscillation modes becomes similar to that for axial modes. Using the ICA we find a polar mode spectrum that has all features of the $w$-mode spectrum of the full problem. Moreover, in the limit of superdense stars, we find the ICA spectrum to be qualitatively similar to that of the axial modes. These results clearly show the importance of general relativity for the pulsation modes of compact stars, and that there are modes whose existence do not depend on motions of the fluid at all; pure ``spacetime'' modes.
description: 4 pages, MN.STY, 2 postscript figures
In Whose Hands: The Pregnancy Test in American Life
Creators: Robinson, Joan Helen
Publisher: name: Columbia University
Year: 2018
Subjects: subject: Sociology
subject: FOS: Sociology
subject: Law
subject: FOS: Law
subject: Women's studies
subject: Pregnancy--Testing
subject: Reproductive health

description: Forty years ago, when an American woman wanted to know if she was pregnant, she made an appointment with a medical professional who would conduct a pregnancy test and tell her the result.  Propelled by the medical establishment’s control, surveillance, and neglect of women’s health, the women’s health movement of the 1970s sought to put women’s health “into their own hands.”  Encouraged in part by the rhetoric of the women’s health movement, pregnancy tests became available for purchase over-the-counter, without a prescription, and outside of the control of the medical establishment.
      This dissertation examines this passage of the pregnancy test from the hands of medical professionals to the hands of lay people and asks, has the pregnancy test really delivered on its promise to give women information, choice, and control?
      We think of women’s reproductive health tools in the hands of doctors as oppressive and in the hands of women as liberating; the central argument of this dissertation is that this view is naïve.  Putting the informational power about women’s bodies into a mobile diagnostic technology did not change the nature of the beast.  Through this examination of the pregnancy test in American life, we can trace the flow of reproductive power through various people, places, and things to better understand the character of women’s subordination.