cometadata/datacite-rtg-text-other-reclassification-records huggingface dataset:
Modelling and Analysis of the Axial Vibration on BHA of Horizontal Drilling Rig
Creators: name: Xu, Jingxuan
Publisher: name: Graduate Studies
Year: 2018
Subjects: subject: vibration
subject: dynamic methematical model
subject: Engineering--Mechanical

description: Horizontal drilling technology is a widely applied well drilling technology due to its capability of reducing drilling time and cost, and at same time increasing the production. In practice, oil and gas production companies employ rotary steerable system or positive displacement motor to steer the drill bit to follow a pre-planned well trajectory along a desired direction. Therefore, the efficiency and accuracy are the main concerns for the improvement of horizontal drilling technology and drill string vibration is the factor to influence these two major concerns. This thesis illustrates a dynamic mathematical model for the vibration of the bottom hole assembly (BHA) which is an important part of drill string. The mathematical model considers the friction between the wellbore and the BHA and the effect of drilling fluid. It investigates the major influencing factors on the vibration, such as weight on bit, friction coefficient, viscous damping coefficient, and the number of stabilizers. The dynamic mathematical model is validated by the finite element simulation and analysis. Moreover, it can monitor the deformation of BHA real time and help drillers adjusting the parameters when the well path deviates from the original planned trajectory.
Phelotrupes (Phelotrupes) kubani Kral, Maly & Schneider 2001
Creators: name: Bezděk, Aleš
name: Hájek, Jiří
name: Ascr, Biology Centre
Publisher: name: Zenodo
Year: 2009
Subjects: Biodiversity
Taxonomy
Animalia
Arthropoda
Insecta
Coleoptera
Geotrupidae
Phelotrupes
Phelotrupes kubani

description: Phelotrupes (Phelotrupes) kubani Král, Malý & Schneider, 2001 Phelotrupes (Phelotrupes) kubani Král, Malý & Schneider, 2001: 111, Figs. 129–130, 235. The holotype is deposited in NMPC (ex coll. D. Král): HOLOTYPE (J): ‘ YUNNAN 2200-2500m / 24.57N 98.45E, 8.-16./5.1995 / GAOLIGONG mts. [p] // Phelotrupes (Phelotrupes) kubani sp. n. / HOLOTYPUS, J / David Král, Vladislav Malý / & Jan Schneider det. 1999 [p, red label]’. Current status. Valid species.
description: Published as part of Bezděk, Aleš, Hájek, Jiří & Ascr, Biology Centre, 2009, Catalogue of type specimens of beetles (Coleoptera) deposited in the National Museum, Prague, Czech Republic, pp. 297-332 in Acta Entomologica Musei Nationalis Pragae 49 (1) on page 320, DOI: 10.5281/zenodo.5319147
description: {"references": ["KRAL D., MALY V. & SCHNEIDER J. 2001 a: Revision of the genera Odontotrypes and Phelotrupes (Coleoptera: Geotrupidae). Folia Heyrovskyana, Supplementum 8: 1 - 178."]}
title: The relationship between working memory and reading comprehension in L1 Arabic and L2 English for Arabic speaking children
Creators: name: Elsayyad, H.M
Publisher: name: Bath Spa University
Year: 2014

description: This mixed methodology research project comprised four studies that explored relationships between working memory and literacy, as well as the potential influence of home literacy, in L1 Arabic and L2 English children in grade six (aged 11) of mainstream Kuwaiti schools (N = 44 to 99). Quantitative studies 1 to 3 investigated these potential relationships using measures of working memory, literacy, phonological skills and vocabulary. Study 3 also contrasted vowelized and non-vowelized Arabic. Study 4 combined findings from approximately 70 completed parental questionnaires about home literacy background with qualitative data from four parental interviews, and compared these data with their children’s scores on working memory, literacy and vocabulary. Findings from studies 1 to 3 suggested that L1 and L2 literacy development can be predicted by working memory after controlling for word reading and vocabulary; and, in the case of Arabic, both vowelized and non-vowelized text showed relationships with working memory. Additionally, Arabic listening span and Arabic backward digit span were predictors of comprehension in L2 English, whereas only listening span predicted comprehension in L1 Arabic. Data indicated that the association between L1 working memory and L2 comprehension was dependent upon L2 language competence. Findings from study 4 also argue for influences on literacy and language skills of the child’s background, including cultural activities associated with upbringing and parental attitudes towards learning and literacy. Overall, similar predictors emerged for English and Arabic literacy skills arguing for these orthographies to rely on common processes. However, there is a need for further development of working memory measures for Arabic contexts to ensure that these measures assess skills appropriately, and for a consideration of parental influences on learning. Educators should consider both cognitive and sociocultural factors as foundations for teaching literacy, and support the establishment of communication routes between parents and schools
The Abe-Okamoto Partially Blind Signature Scheme Revisited
Creators: name: Kastner, Julia
name: Loss, Julian
name: Xu, Jiayu
Publisher: name: CISPA
Year: 2023

description: Partially blind signatures, an extension of ordinary blind sig- natures, are a primitive with wide applications in e-cash and electronic voting. One of the most efficient schemes to date is the one by Abe and Okamoto (CRYPTO 2000), whose underlying idea — the OR-proof technique — has served as the basis for several works. We point out several subtle flaws in the original proof of security, and provide a new detailed and rigorous proof, achieving similar bounds as the original work. We believe our insights on the proof strategy will find useful in the security analyses of other OR-proof-based schemes.
Initial boundary value problem for the focusing NLS equation with Robin boundary condition: half-line approach
Creators: name: Its, Alexander
name: Shepelsky, Dmitry
Publisher: name: arXiv
Year: 2012
Subjects: subject: Exactly Solvable and Integrable Systems (nlin.SI)
subject: Analysis of PDEs (math.AP)
subject: FOS: Physical sciences
subject: FOS: Mathematics

description: We consider the initial boundary value problem for the focusing nonlinear Schrödinger equation in the quarter plane $x>0,t>0$ in the case of decaying initial data (for $t=0$, as $x\to +\infty$) and the Robin boundary condition at $x=0$. We revisit the approach based on the simultaneous spectral analysis of the Lax pair equations [Fokas, 2002; Fokas, Its, Sung, 2005] and show that the approach can be implemented without any a priori assumptions on the long-time behavior of the boundary values.
description: 15 pages; Introduction and Concluding remarks enhanced
Le prospettive per la formazione continua rivolta ai lavoratori del settore non pubblico nel Piano Nazionale di Ripresa e Resilienza italiano: opportunità per estendere l’efficacia di un diritto soggettivo
Creators: name: Marcuccio, Massimo
Publisher: name: Alma Mater Studiorum - Università di Bologna
Year: 2021
Subjects: M-PED/04 Pedagogia sperimentale

description: Il contributo presenta gli esiti di un’analisi testuale di tipo quali-quantitativa supportata dall'utilizzo di software del Piano Nazionale di Ripresa e Resilienza italiano (PNRR) realizzata per individuare le linee di sviluppo della politica formativa rivolta ai lavoratori delle imprese non pubbliche. La programmazione complessiva delle attività di formazione continua risulta distribuita all’interno di diverse sezioni del documento ed è prevista in relazione a persone che operano in contesti organizzativi pubblici e non pubblici. Circa i lavorati delle imprese non pubbliche, le attività riguardano in modo distinto, da un lato, i lavoratori occupati, dall’altro, in modo prevalente, i disoccupati e i lavoratori in «transizione occupazionale». Gli esiti di tale analisi sono stati utilizzati per far emergere alcuni problemi aperti, alla luce del diritto soggettivo alla formazione continua, e delineare ipotesi risolutive per supportare le scelte che dovranno essere effettuate entro la fine del 2021 da diversi decisori a livello nazionale e regionale.
title: Cognitive correlates of sleepiness and sleep disruption in everyday domestic settings
Creators: name: Wadeley, A
Publisher: name: Bath Spa University
Year: 2014

description: Sleepiness and sleep disruption caused by cohabitees could have deleterious cognitive consequences in everyday life. Research in this area is scarce, thus cognitive correlates of varying degrees of sub-optimal sleep patterns in five groups of healthy adults in domestic settings were studied. The groups studied included adults living with healthy partners, adults living with partners with a chronic, sleep-disrupting illness (Parkinson's disease), and mothers of young children.
C*-Algebra approach to the index theory of boundary value problems
Creators: name: Melo, Severino
name: Schrohe, Elmar
name: Schick, Thomas
Publisher: name: arXiv
Year: 2012
Subjects: subject: K-Theory and Homology (math.KT)
subject: Analysis of PDEs (math.AP)
subject: Operator Algebras (math.OA)
subject: FOS: Mathematics
subject: 19K56, 46L80, 58J32

description: Boutet de Monvel's calculus provides a pseudodifferential framework which encompasses the classical differential boundary value problems. In an extension of the concept of Lopatinski and Shapiro, it associates to each operator two symbols: a pseudodifferential principal symbol, which is a bundle homomorphism, and an operator-valued boundary symbol. Ellipticity requires the invertibility of both. If the underlying manifold is compact, elliptic elements define Fredholm operators. Boutet de Monvel showed how then the index can be computed in topological terms. The crucial observation is that elliptic operators can be mapped to compactly supported $K$-theory classes on the cotangent bundle over the interior of the manifold. The Atiyah-Singer topological index map, applied to this class, then furnishes the index of the operator. Based on this result, Fedosov, Rempel-Schulze and Grubb have given index formulas in terms of the symbols. In this paper we survey previous work how C*-algebra K-theory can be used to give a proof of Boutet de Monvel's index theorem for boundary value problems, and how the same techniques yield an index theorem for families of Boutet de Monvel operators. The key ingredient of our approach is a precise description of the K-theory of the kernel and of the image of the boundary symbol.
description: 17 pages, submitted to the "Rosenberg proceedings"
A model of large volumetric capacitance in graphene supercapacitors based on ion clustering
Creators: name: Skinner, Brian
name: Fogler, M. M.
name: Shklovskii, B. I.
Publisher: name: arXiv
Year: 2011
Subjects: subject: Mesoscale and Nanoscale Physics (cond-mat.mes-hall)
subject: Materials Science (cond-mat.mtrl-sci)
subject: FOS: Physical sciences

description: Electric double layer supercapacitors are promising devices for high-power energy storage based on the reversible absorption of ions into porous, conducting electrodes. Graphene is a particularly good candidate for the electrode material in supercapacitors due to its high conductivity and large surface area. In this paper we consider supercapacitor electrodes made from a stack of graphene sheets with randomly-inserted "spacer" molecules. We show that the large volumetric capacitances C > 100 F/cm^3 observed experimentally can be understood as a result of collective intercalation of ions into the graphene stack and the accompanying nonlinear screening by graphene electrons that renormalizes the charge of the ion clusters.
description: 13 pages, 5 figures; additional discussion and supporting calculations added
Chemical Composition of Seaweeds
Creators: name: Priyatharshni Arivoli *, Cheryl Antony and P.Ruby
Publisher: name: the fish world a monthly magazine
Year: 2024

description: Introduction

Seaweeds, or marine macroalgae, are rich in a wide variety of bioactive compounds, making them highly valued for their nutritional and pharmaceutical properties. Their chemical composition varies depending on the species, environmental conditions, and the season of harvest, but generally, seaweeds are composed of several key components.
On the Adaptive Security of the Threshold BLS Signature Scheme
Creators: name: Bacho, Renas
name: Loss, Julian
Publisher: name: CISPA
Year: 2023

description: Threshold signatures are a crucial tool for many distributed protocols. As shown by Cachin, Kursawe, and Shoup (PODC `00), schemes with unique signatures are of particular importance, as they allow to implement distributed coin flipping very efficiently and without any timing assumptions. This makes them an ideal building block for (inherently randomized) asynchronous consensus protocols. The threshold-BLS signature of Boldyreva (PKC `03) is both unique and very compact, but unfortunately lacks a security proof against adaptive adversaries. Thus, current consensus protocols either rely on less efficient alternatives or are not adaptively secure. In this work, we revisit the security of the threshold BLS signature by showing the following results, assuming t adaptive corruptions: - We give a modular security proof that follows a two-step approach: 1) We introduce a new security notion for distributed key generation protocols (DKG). We show that it is satisfied by several protocols that previously only had a static security proof. 2) Assuming any DKG protocol with this property, we then prove unforgeability of the threshold BLS scheme. Our reductions are tight and can be used to substantiate real-world parameter choices. - To justify our use of strong assumptions such as the algebraic group model (AGM) and the hardness of one-more-discrete logarithm (OMDL), we prove an impossibility result: Even in the AGM, a strong interactive assumption is required in order to prove the scheme secure.
title: How can a deeper understanding of the professional situation of LLS teacher educators enhance their future support, professional development and working context?
Creators: name: Crawley, J
Publisher: name: Bath Spa University
Year: 2014

description: This research explored the professional situation of teacher educators in the Lifelong Learning Sector (LLS), and how a deeper understanding of their professional situation could enhance their future support, professional development and working context. The research followed a mixed methods methodology, and six research phases took place including focus groups, a literature review, and an evaluation of a CPD programme. The largest online survey of this particular group to date was also carried out and 161 teacher educators participated in that survey. The results of the research provided rich insights into their values, experiences, particularly challenging working context and support needs. The knowledge resulting from the research included recognition of the multiplicity and complexity of the role and how LLS teacher educators manage it. The multiplicity and complexity was characterised as the ‘more than a teacher’ quality, and teacher education professionals as ‘triple professionals’ or ‘multiple professionals’. The research developed a new model of professionalism, the ‘connected professional’, and embedded this in the theoretical framework for teacher education entitled ‘The Teacher Education Professional as Connecting Professional (TEPACP)’ framework. Recommendations arising from the findings include adopting the model of the Connected Professional and TEPACP theoretical framework proposed by the evidence from the research together with action to assist LLS Teacher Educators to progress towards a more confident professional identity. The research significantly extends the understanding of the characteristics and beliefs of this under-researched professional community.
Additional file 6: of Thrombopoietin knock-in augments platelet generation from human embryonic stem cells
Creators: name: Zhang, Leisheng
name: Liu, Cuicui
name: Wang, Hongtao
name: Wu, Dan
name: Su, Pei
name: Wang, Mengge
name: Guo, Jiaojiao
name: Zhao, Shixuan
name: Dong, Shuxu
name: Zhou, Wen
name: Arakaki, Cameron
name: Zhang, Xiaobing
name: Zhou, Jiaxi
Publisher: name: figshare
Year: 2018
Subjects: subject: Space Science
subject: Medicine
subject: Cell Biology
subject: Genetics
subject: FOS: Biological sciences
subject: Molecular Biology
subject: Biological Sciences not elsewhere classified
subject: Developmental Biology
subject: Hematology
subject: Infectious Diseases
subject: FOS: Health sciences
subject: Plant Biology

description: Figure S5. TPO-KI partially replaces extrinsic TPO in platelet production. qRT-PCR analysis of megakaryocytic-associated markers and flow cytometer analysis for percentage of CD41a+, CD42b+ platelet microparticles performed. (PDF 85 kb)
Understanding Adolescent Identity Construction in the Context of Living with a Parent with an Acquired Brain Injury
Creators: name: Freeman-Cruz, Erin Aiofe
Publisher: name: Graduate Studies
Year: 2018
Subjects: subject: adolescence
subject: identity construction
subject: narrative identity
subject: acquired brain injury
subject: hermeneutics
subject: social construction
subject: Educational Psychology
subject: Neuroscience
subject: Psychology--Clinical
subject: Psychology--Developmental

description: Adolescent identity construction is complex. Despite decades of research revealing various understandings of identity, it is unclear how disruptive phenomena influence identity construction, particularly during adolescence. Therefore, when adult participants from my master’s thesis talked about becoming different people as a result of their adolescent experiences of living with a parent with an acquired brain injury (ABI), I wondered how the occurrence of such a phenomenon could change identities and self. This wondering inspired my doctoral research studies and led me to ask the following research question: How might we understand adolescent identity construction in the context of living with a parent with an ABI? To respond to this question, I used hermeneutic inquiry guided by Gadamer’s (1960/2004) philosophical hermeneutics. I recruited volunteers from the Calgary area through emails to ABI and counselling service providers, posters, news media interviews, social media advertisements, and snowball sampling. I obtained nine adult participants (three males, six females) aged 20 to 38 years, who were adolescents (i.e., 10 to 19 years of age) at the time their parent incurred an ABI. Participants engaged in a one- to two-hour audio-recorded interview that was then transcribed verbatim. Analysis and interpretation of the data included reviewing interview transcripts, listening to the recordings, journaling thoughts and questions inspired by the interviews, discussing preliminary thoughts with supervisory committee members, and consulting the literature to create an understanding of the topic. Through this process, I created six interpretations that revealed how we might understand adolescent identity construction in the context of living with a parent with an ABI. These interpretations included: (a) using normal as a guiding concept in identity construction, (b) remaking home environments to construct identities, (c) adopting and rejecting roles resulting from parental ABI, (d) experiencing trust and betrayal in social relationships, (e) being unrecognized and/or forgotten, and (f) silencing in identity construction. Following a presentation of these interpretations, I discuss my synthesized understanding and the implications of the findings for theory, practice, and research.
Using a Kinematic Definition of the Hubble Parameter to Determine the Cosmological Constant Λ = 0 in a Balanced Universe
Creators: name: Savickas, David
Publisher: name: arXiv
Year: 2011
Subjects: subject: General Physics (physics.gen-ph)
subject: FOS: Physical sciences

description: The Hubble parameter is kinematically defined in terms of the positions and velocities of all particles in a universe which may or may not be finite. This definition is set equal to the Hubble parameter as defined in the Friedman-Lemaître solution of general relativity, and which occurs after the inflationary expansion has ended in the Guth model. Because a coordinate system at rest relative to its local Hubble drift is a system in which the cosmic background radiation is observed to be isotropic, it is also an inertial system. Just before the first mass particles are created within a pure radiation universe, there are no mass particles that exist which can define H or the inertial systems associated with the Hubble drift. It will be shown that only a cosmological constant with a magnitude of zero will allow radiation to form mass particles that have a total energy which is independent of inertial systems and is equal to the equivalent energy of their rest mass. Additional mass particles are continuously formed from the radiation throughout the expanding universe after the initial particles are created.
title: The stranger within: Heaven on Earth and The secret river
Creators: name: Bentham, R
Publisher: name: Bath Spa University
Year: 2014

description: This is a practitioner writer’s comparative study of two novels; 'The Secret River' by Kate Grenville, and 'Heaven on Earth' by Rachel Bentham. The focus is on the techniques used to depict characters of markedly different cultures to that of the writers particularly the characters and culture of indigenous people, in the context of the historical novel.. The research methods and the creative process used to develop indigenous and other characters are explored, providing a detailed critique of the creative work in terms of writerly choices of focus, narrative, imagery and voice. Both novels will be contextualised in terms of the writer's other works, with reference to 'otherness', anthropology and historical fiction generally. Overall, I shall be comparing the gains and losses resulting from the methods employed.
Crystal palace: a written accompaniment to the thesis exhibition
Creators: name: McQuitty, Jane
Publisher: name: University of Calgary
Year: 2007

description: Bibliography: p. 68-71
description: Some pages are in colour.
description: Crystal Palace claims personal experience can be a channel for new interpretations of the world and rejects post-Structuralist determination of consciousness by language. With reference to the eco-centric understanding of land that some call radical ecology, I propose its eco-centric general perspective lies beyond the scope of explanation as an entirely cultural formation. I recount my long personal involvement with a small prairie eco-system and its political path. In explanation of this narrative I use ecosocial semiotic theories of the open-system character of language, consciousness, and life forms and ecoÂ­systems. I conclude that characteristics of my experience stand in relation to ecosocial semiotic theory of body-environment relations and the eco-centric developmental paths of others. In later chapters the repercussions of the non-linguistiÂ·c character of this knowledge are discussed in relation to art production.
Totally Separable Packings of Convex Domains
Creators: name: Oliwa, Michael
Publisher: name: Graduate Studies
Year: 2018
Subjects: subject: packing
subject: total separability
subject: convexity
subject: orthogonality
subject: angular measures
subject: crystallization
subject: contact numbers
subject: kissing numbers
subject: Mathematics
subject: FOS: Mathematics

description: Two key combinatorial quantities that arise in the study of translative packings of convex bodies are the Hadwiger numbers and contact numbers. In this thesis, we will focus on computing these numbers for packings which are totally separable, particularly for two-dimensional bodies with smooth boundaries. The proofs require the use of various ideas from both combinatorics and analysis, such as minimum distance graphs, polyominoes, Birkhoff orthogonality, angular measures, and approximation via the Hausdorff metric.
Generalized self-dual Maxwell-Chern-Simons-Higgs model
Creators: name: Bazeia, D.
name: Casana, R.
name: da Hora, E.
name: Menezes, R.
Publisher: name: arXiv
Year: 2012
Subjects: subject: High Energy Physics - Theory (hep-th)
subject: FOS: Physical sciences

description: We present a consistent BPS framework for a generalized Maxwell-Chern-Simons-Higgs model. The overall model, including its self-dual potential, depends on three different functions, h(|ϕ|,N), w(|ϕ|) and G(|ϕ|), which are functions of the scalar fields only. The BPS energy is proportional to the magnetic flux when w(|ϕ|) and G(|ϕ|) are related to each other by a differential constraint. We present an explicit non-standard model and its topologically non-trivial static configurations, which are described by the usual radially symmetric profile. Finally, we note that the non-standard results behave in a similar way as their standard counterparts, as expected, reinforcing the consistence of the overall construction.
description: 6 pages, 5 figures
title: Growing up: Julia Green's fiction in the context of the tradition of realist writing for young adults
Creators: name: Green, J
Publisher: name: Bath Spa University
Year: 2015

description: As part of a PhD by Publication, this contextualising thesis explores the contribution that Green's novels make to contemporary realistic fiction for young adults. Julia Green describes her development as a writer. She traces the themes and preoccupations in her young adult novels which link them as a significant body of work, and explores the connections with an older tradition of writing in terms of narrative style, language, depth of characterization and issues of interiority. Green writers as a practitioner critic, drawing on her close reading of texts (her own, and others') and using her own journals and other forms of writing such as blog posts and online articles as evidence of her writing process, alongside academic books and articles. The thesis is likely to be of interest to other writers as well as those studying children's literature.
Faster Exponential-Time Approximation Algorithms Using Approximate Monotone Local Search
Creators: name: Can Esmer, Baris
name: Kulik, Ariel
name: Marx, Dániel
name: Neuen, Daniel
name: Sharma, Roohani
Publisher: name: CISPA
Year: 2023

description: We generalize the monotone local search approach of Fomin, Gaspers, Lokshtanov and Saurabh [J.ACM 2019], by establishing a connection between parameterized approximation and exponential-time approximation algorithms for {\em monotone subset minimization} problems. In a {\em monotone subset minimization} problem the input implicitly describes a non-empty set family over a universe of size $n$ which is closed under taking supersets. The task is to find a minimum cardinality set in this family. Broadly speaking, we use {\em approximate monotone local search} to show that a parameterized $\alpha$-approximation algorithm that runs in $c^k \cdot n^{\OO(1)}$ time, where $k$ is the solution size, can be used to derive an $\alpha$-approximation randomized algorithm that runs in $d^n \cdot n^{\OO(1)}$ time, where $d$ is the unique value in $d\in \left (1, 1+\frac{c-1}{\alpha} \right)$ such that $\D{\frac{1}{\alpha}}{\frac{d-1}{c-1}} =\frac{\ln c }{\alpha}$ and $\D{a}{b}$ is the Kullback-Leibler divergence. This running time matches that of Fomin et al.\ for $\alpha=1$, and is strictly better when $\alpha >1$, for any $c >1$. Furthermore, we also show that this result can be derandomized at the expense of a sub-exponential multiplicative factor in the running time. We use an approximate variant of the exhaustive search as a benchmark for our algorithm. We show that the classic $2^n \cdot n^{\OO(1)}$ exhaustive search can be adapted to an $\alpha$-approximate exhaustive search that runs in time $\left ( 1+ \exp\left (-\alpha \cdot \entropy\left (\frac{1}{\alpha}\right)\right)\right)^n \cdot n^{\OO(1)}$, where $\entropy$ is the entropy function. Furthermore, we provide a lower bound stating that the running time of this $\alpha$-approximate exhaustive search is the best achievable running time in an oracle model. When compared to approximate exhaustive search, and to other techniques, the running times obtained by approximate monotone local search are strictly better for any $\alpha \geq 1,~c >1$. We demonstrate the potential of approximate monotone local search by deriving new and faster exponential approximation algorithms for {\sc Vertex Cover}, {\sc $3$-Hitting Set}, {\sc Directed Feedback Vertex Set}, {\sc Directed Subset Feedback Vertex Set}, {\sc Directed Odd Cycle Transversal} and {\sc Undirected Multicut}. For instance, we get a $1.1$-approximation algorithm for {\sc Vertex Cover} with running time $1.114^n \cdot n^{\OO(1)}$, improving upon the previously best known $1.1$-approximation running in time $1.127^n \cdot n^{\OO(1)}$ by Bourgeois et al.\ [DAM 2011].
Second-generation microlensing planet surveys: a realistic simulation
Creators: name: Shvartzvald, Yossi
name: Maoz, Dan
Publisher: name: arXiv
Year: 2011
Subjects: subject: Earth and Planetary Astrophysics (astro-ph.EP)
subject: Astrophysics of Galaxies (astro-ph.GA)
subject: FOS: Physical sciences

description: Microlensing surveys, which have discovered about a dozen extrasolar planets to date, have focused on the small minority of high-magnification lensing events, which have a high sensitivity to planet detection. In contrast, second-generation experiments, of the type that has recently begun, monitor continuously also the majority of low-magnification events. We carry out a realistic numerical simulation of such experiments. We simulate scaled, solar-like, eight-planet systems, studying a variety of physical parameters (planet frequency, scaling of the snowline with stellar mass R_snow ~ M^s), and folding in the various observational parameters (cadence, experiment duration), with sampling sequences and photometric error distributions taken from the real ongoing experiment. We quantify the dependence of detected planet yield on cadence and experiment duration, e.g., the yield is doubled when going from 3-hour to 15-minute baseline cadences, or from an 80-day-long to a 150-day-long experiment. There is a degeneracy between the snowline scaling index s and the abundance of planetary systems that can be inferred from the experiment, in the context of our scaled solar-analog model. After 4 years, the ongoing second-generation experiment will discover of the order of 50 planets, and thus will be able to determine the frequency of snowline planet occurrence to a precision of 10-30%, assuming the fraction of stars hosting such planets is between 1/3 and 1/10, and a snowline index in the range s=0.5 to 2. If most planetary systems are solar analogs, over 65% of the detected planets will be "Jupiters", five in six of the detected anomalies will be due to a single planet, and one in six will reveal two planets in a single lensing event.
description: 11 pages, 9 figures, 1 table, MNRAS, in press
Supplementary document for Spin-to-orbital angular momentum conversion via light intensity gradient - 5403609.pdf
Creators: name: Huang, Shuang-Yin
name: Zhang, Guan-Lin
name: Wang, Qiang
name: Wang, Min
name: Tu, Chenghou
name: Li, Yongnan
name: Wang, Hui-Tian
Publisher: name: Optica Publishing Group
Year: 2021
Subjects: Uncategorized

description: Supplementary Information
The data of paper 《Mechanical movement data acquisition method based on the multilayer neural networks and machine vision in a digital twin environment》
Creators: name: Li, Hao
name: Liu, Gen
name: Wang, Haoqi
name: Wen, Xiaoyu
name: Xie, Guizhong
name: Luo, Guofu
name: Zhang, Shuai
Publisher: name: figshare
Year: 2021
Subjects: subject: 100601 Arithmetic and Logic Structures
subject: FOS: Electrical engineering, electronic engineering, information engineering

description: This data set is the data generated from neural network algorithm which is used to calculate the position data of visual signs.It includes the influence of the number of nodes in the neural network hidden layer on the accuracy of the algorithm and the influence of the diameter of the visually marked image on the accuracy of the algorithm.Fix the image size of visual markers, adjust the number of hidden layer nodes of neural network, carry out multiple visual marker recognition tests, and calculate the positioning accuracy.Fix the number of nodes in the hidden layer of neural network, adjust the diameter of visual markers in the image, and obtain the accuracy of the algorithm to recognize visual markers through multiple tests.The data is presented in the form of Excel table.The tables correspond to the charts with the same name in the paper.The data in the table is the original data of the charts in the paper.
Classical and Quantum Algorithms for Variants of Subset-Sum via Dynamic Programming
Creators: name: Allcock, Jonathan
name: Hamoudi, Yassine
name: Joux, Antoine
name: Klingelhöfer, Felix
name: Santha, Miklos
Publisher: name: CISPA
Year: 2023

description: Subset-Sum is an NP-complete problem where one must decide if a multiset of n integers contains a subset whose elements sum to a target value m. The best known classical and quantum algorithms run in time Oe(2n/2 ) and Oe(2n/3 ), respectively, based on the well-known meet-in-the-middle technique. Here we introduce a novel classical dynamic-programming-based data structure with applications to Subset-Sum and a number of variants, including Equal-Sums (where one seeks two disjoint subsets with the same sum), 2-Subset-Sum (a relaxed version of Subset-Sum where each item in the input set can be used twice in the summation), and Shifted-Sums, a generalization of both of these variants, where one seeks two disjoint subsets whose sums differ by some specified value. Given any modulus p, our data structure can be constructed in time O(np), after which queries can be made in time O(n) to the lists of subsets summing to any value modulo p. We use this data structure in combination with variable-time amplitude amplification and a new quantum pair finding algorithm, extending the quantum claw finding algorithm to the multiple solutions case, to give an O(20.504n ) quantum algorithm for Shifted-Sums. This provides a notable improvement on the best known O(20.773n ) classical running time established by Mucha et al. [27]. We also study Pigeonhole Equal-Sums, a variant of Equal-Sums where the existence of a solution is guaranteed by the pigeonhole principle. For this problem we give faster classical and quantum algorithms with running time Oe(2n/2 ) and Oe(22n/5 ), respectively.
title: Sylhetisation, dependence and ambivalence: a qualitative exploration of paan use amongst older Bangladeshi women in London
Creators: name: Mahendran, J
Publisher: name: Bath Spa University
Year: 2015

description: This thesis introduces a novel and alternative way of understanding paan addiction among Bangladeshi women by exploring their lived experiences. There is growing medical evidence that paan, a mixture of betel leaf, areca nut, tobacco and white lime, is injurious to health, causing cancer, oral disease and addition (WHO, 2004). Paan use is prevalent and visible among the Bangladeshi community in East London. However, paan dependence is principally examined through the dominant medical model, which prioritises the scientific and pharmacological aspects. Research has yet to examine paan dependence from the user's perspective, which limits health and social care professionals from understanding the practice, the determinants of the habit and the elements contributing to its continued use. Understanding the user perspective would assist in designing and delivering appropriate and targeted interventions. There are no similar studies of this nature into paan use and therefore this study developed a theoretical framework by examining literature pertaining to migration, biographies and inequalities in health. METHOD: An ethnographic study was conducted and data collected through extensive fieldwork followed by in-depth interviews with thirty Bangladeshi women in Tower Hamlets, East London, who have continuously used paan over a number of years. Participants were recruited through purposive sampling. Interview data was analysed thematically using grounded theory techniques (Glazer and Strauss, 1967) and then triangulated to compare and crosscheck the consistency of the research findings. FINDINGS: Key research findings indicate that while health discourses have explained paan use simply as a result of physical addition to tobacco, exploring the biographical, historical and social context of paan use developed a deeper understanding of how the participants constituted the experience and meaning of paan addiction. Four key themes emerged - physical and psychological addiction, availability and social acceptance of paan chewing, lack of involvement in the wider social environment and 'Sylhetisation', (a concept introduced by this thesis to describe how the Bangladeshi community have created an environment similar to that of Sylhet). The main recommendation is that an understanding of the sociocultural aspects of paan use may help greatly in developing more culturally specific paan cessation strategies within tobacco policies.
Limits for superfocusing with finite evanescent wave amplification
Creators: name: Gordon, Reuven
Publisher: name: arXiv
Year: 2011
Subjects: subject: Optics (physics.optics)
subject: Mesoscale and Nanoscale Physics (cond-mat.mes-hall)
subject: FOS: Physical sciences

description: Perfect lensing using negative refractive index materials and radiationless electromagnetic interference both provide extreme subwavelength focusing by "amplifying" evanescent wave components that are usually lost. This paper provides a relation between the achievable focus spot size, the amplification available and the focal length. This may be considered as a revised version of Abbe's diffraction limit for focusing systems that have evanescent wave amplification. It is useful in comparing the amplification achieved in various subwavelength focusing implementations, as well as determining when it is better to use existing near-field techniques, such as simple diffraction from an aperture or slit, than to attempt complicated superfocusing.
Trans-Diatonic Theory and the Harmonic Analysis of Nineteenth-Century Music
Creators: name: De Andrade Negri, Alexandre Jorge
Publisher: name: Arts
Year: 2018
Subjects: subject: Trans-Diatonic Theory
subject: Trans-Diatonic Harmonyy
subject: Nineteenth-Century Music
subject: Chromatic Harmony
subject: Education--Music

description: A hallmark of nineteenth-century music is the conscious and systematic exploration of ‘non-normative’ harmonic relations especially by composers such as Liszt, Brahms, Wagner, and others. Non-normative in this context is taken to refer to any harmonic relation that fulfills the following two conditions: (1) at least one, but normally both chords (or harmonic regions) are chromatic to each other and/or to their context; and (2) the intervallic relationship between their roots is derived from a symmetrical division of the octave (i.e., they must be either a semitone, a whole-tone, a minor third, a major third, or a tritone apart). By their nature, diatonic-based analytical systems do not have the necessary tools or flexibility to explain Romantic non-normative harmonic relations, as defined above. This thesis proposes a new approach to analysis of later nineteenth-century harmony. In chapter 1, this thesis considers four modern theories of harmony that were developed to address the issues raised above. The theories examined are by Gregory Proctor (1978), Harald Krebs (1980), David Kopp (2002), and Richard Cohn (1996, 2000, 2012). Because all of these theories are ultimately rooted in an adaptation of conventional diatonic analytical practices or concentrate upon very limited aspects of non-normative harmonic relations (mainly, chromatic mediant relations), they are found to be inadequate to deal with characteristically difficult passages of nineteenth-century harmony. In chapter 2, this thesis proposes a new theory of harmony, entitled ‘trans-diatonic theory.’ The key concept of trans-diatonic theory is the ‘diptych principle,’ which fuses parallel keys (and chords) into a new, greater unit. The diptych principle generates a trans-diatonic scale, which provides richer, more complex harmonic relations that, in turn, allows for a more logical understanding of non-normative harmonic relations. The final chapter shows the practical advantages of the trans-diatonic system through the analysis of a variety of harmonically challenging passages from different works. These analyses demonstrate the use and effectiveness of the trans-diatonic theory.
title: Gris-gris: a novel and, Contextualising research: crafting the rape scene: an exploration of how Toni Morrison and Isabel Allende write rape scenes in The Bluest Eye and The House of Spirits and how their approaches influence the crafting of those in Gris-gris
Creators: name: Storey, H.C
Publisher: name: Bath Spa University
Year: 2015

description: The creative component of this thesis, the novel Gris-gris, explores how a mother's betrayal of her daughter and the resulting rape of that daughter is reiterated through three following generations of women within the same family. ... [cut for length] ... In the contextualizing component, I explore approaches to effectively crafting the pivotal rape scenes in Gris-gris to avoid reducing the novel, in the reader's mind, to being primarily one "about rape". I did not want the scenes to be pornographic or voyeuristic, metaphorical or ambiguous. I wanted them to be honest and truly affecting - but not hijack the novel's central narrative, which is how one mother's betrayal reverberates through following generations. Two popular, literary novels with plots that hinge on rape scenes are Toni Morrison's The Bluest Eye and Isabel Allende's The House of Spirits. The architecture and positioning of the rape scenes in these works has much to do with each novel's unique narrative power. My original contribution to knowledge, therefore, is a study -- from the point of view of a practicing creative writer -- of 1) how these two writers craft rape scenes in these novels and 2) how, in the writing of Gris-gris, I situate and develop my own practice in terms of craft, while responding to personal and social considerations. This study will inform the creative writer who is assessing how to modulate scenes of rape in literature as one novelist's considered approach to the delicate balances involved in crafting such scenes. ... [cut for length]
Adeno-associated virus-mediated heme oxygenase-1 gene transfer suppresses the progression of micronodular cirrhosis in rats
Creators: name: Tsui, Tung-Yu
name: Lau, Chi-Keung
name: Ma, Jian
name: Glockzin, Gabriel
name: Obed, Aiman
name: Schlitt, Hans J.
name: Fan, Sheung-Tat
Publisher: name: Universität Regensburg
Year: 2006
Subjects: subject: Cirrhosis; Portal hypertension; Heme oxygenase; Gene therapy; Adeno-associated virus
subject: 610 Medizin

description: AIM: To test the hypothesis that enhancement of the activity of heme oxygenase can interfere with processes of fibrogenesis associated with recurrent liver injury, we investigated the therapeutic potential of over-expression of heme oxygense-1 in a CCl(4)-induced micronodular cirrhosis model. METHODS: Recombinant adeno-associated viruses carrying rat HO-1 or GFP gene were generated. 1x 10(12) vg of adeno-associated viruses were administered through portal injection at the time of the induction of liver fibrosis. RESULTS: Conditioning the rat liver with over-expression of HO-1 by rAAV/HO-1 significantly increased the HO enzymatic activities in a stable manner. The development of micronodular cirrhosis was significantly inhibited in rAAV/HO-1-transduced animals as compared to controls. Portal hypertension was markedly diminished in rAAV/HO-1-transduced animals as compared to controls, whereas there are no significant changes in systolic blood pressure. This finding was accompanied with improved liver biochemistry, less infiltrating macrophages and less activated hepatic stellate cells (HSCs) in rAAV/HO-1-transduced livers. CONCLUSION: Enhancement of HO activity in the livers suppresses the development of cirrhosis.
Five-Torsion in the Homology of the Matching Complex on 14 Vertices
Creators: name: Jonsson, Jakob
Publisher: name: arXiv
Year: 2012
Subjects: subject: Combinatorics (math.CO)
subject: FOS: Mathematics
subject: 55U10, 05E25

description: J. L. Andersen proved that there is 5-torsion in the bottom nonvanishing homology group of the simplicial complex of graphs of degree at most two on seven vertices. We use this result to demonstrate that there is 5-torsion also in the bottom nonvanishing homology group of the matching complex $M_{14}$ on 14 vertices. Combining our observation with results due to Bouc and to Shareshian and Wachs, we conclude that the case $n=14$ is exceptional; for all other $n$, the torsion subgroup of the bottom nonvanishing homology group has exponent three or is zero. The possibility remains that there is other torsion than 3-torsion in higher-degree homology groups of $M_n$ when $n \ge 13$ and $n \neq 14$.
description: 11 pages
Syndrome Decoding in the Head: Shorter Signatures from Zero-Knowledge Proofs
Creators: name: Feneuil, Thibauld
name: Joux, Antoine
name: Rivain, Matthieu
Publisher: name: CISPA
Year: 2023

description: Zero-knowledge proofs of knowledge are useful tools to de- sign signature schemes. The ongoing effort to build a quantum computer urges the cryptography community to develop new secure cryptographic protocols based on quantum-hard cryptographic problems. One of the few directions is code-based cryptography for which the strongest prob- lem is the syndrome decoding (SD) for random linear codes. This problem is known to be NP-hard and the cryptanalysis state of the art has been stable for many years. A zero-knowledge protocol for this problem was pioneered by Stern in 1993. Since its publication, many articles proposed optimizations, implementation, or variants. In this paper, we introduce a new zero-knowledge proof for the syndrome decoding problem on random linear codes. Instead of using permuta- tions like most of the existing protocols, we rely on the MPC-in-the- head paradigm in which we reduce the task of proving the low Hamming weight of the SD solution to proving some relations between specific polynomials. Specifically, we propose a 5-round zero-knowledge protocol that proves the knowledge of a vector x such that y = Hx and wt(x) ≤ w and which achieves a soundness error closed to 1/N for an arbitrary N. While turning this protocol into a signature scheme, we achieve a signa- ture size of 11-12 KB for 128-bit security when relying on the hardness of the SD problem on binary fields. Using larger fields (like F28 ), we can produce fast signatures of around 8 KB. This allows us to outperform Picnic3 and to be competitive with SPHINCS+, both post-quantum sig- nature candidates in the ongoing NIST standardization effort. Moreover, our scheme outperforms all the existing code-based signature schemes for the common “signature size + public key size” metric.
title: Max Weber and Anglophone Historiography
Creators: name: Bourke, Richard
Publisher: name: Center for Advanced Studies LMU
Year: 2020
Subjects: subject: 900 History and geography
subject: FOS: History and archaeology

description: The distinguished ancient historian Moses Finley is reported to have planned at the end of his life to re-read the writings of Max Weber, half a century after he first encountered his corpus. This level of engagement is surely exceptional among anglophone historians. It is a notorious fact that, beginning with R. H. Tawney, historians in Britain and the United States have subjected Weber’s work to skewed interpretations or familiarised themselves with only a fraction of his output.