cometadata/datacite-rtg-text-other-reclassification-records huggingface dataset:
Frequency scaling law for nonlinear Compton and Thomson scattering: Relevance of spin and polarization effects
Creators: name: Krajewska, K.
name: Kaminski, J. Z.
Publisher: name: arXiv
Year: 2013
Subjects: subject: High Energy Physics - Phenomenology (hep-ph)
subject: Atomic Physics (physics.atom-ph)
subject: FOS: Physical sciences

description: The distributions of Compton and Thomson radiation for a shaped laser pulse colliding with a free electron are calculated in the framework of quantum and classical electrodynamics, respectively. We introduce a scaling law for the Compton and the Thomson frequency distributions which universally applies to long and short incident pulses. Thus, we extend the validity of frequency scaling postulated in previous studies comparing nonlinear Compton and Thomson processes. The scaling law introduced in this paper relates the Compton no-spin flipping process to the Thomson process over nearly the entire spectrum of emitted radiation, including its high-energy portion. By applying the frequency scaling, we identify that both spin and polarization effects are responsible for differences between classical and quantum results. The same frequency scaling applies to angular distributions and to temporal power distributions of emitted radiation, which we illustrate numerically.
description: 17 pages, 11 figures
Die hohe Kunst elterlichen Verhaltens: Welche Möglichkeiten und Grenzen bietet die Lösungs- und Kompetenzorientierung in der Interaktion mit Kindern, welche sich aus Sicht der Eltern und Bezugspersonen herausfordernd verhalten?
Creators: name: Furrer, Claudia
Publisher: name: Zenodo
Year: 2022

description: Interaktionen mit Kindern, vor allem wenn sie sich anders verhalten als erwünscht, sind herausfordernd. Dies führt bei vielen Eltern und Bezugspersonen zu Unsicherheit und zu Fragen. Diese Master-Arbeit beleuchtet, welche Möglichkeiten und Grenzen die Lösungs- und Kompetenzorientierung Eltern und Bezugspersonen bei Interaktionen mit Kindern bietet, welche sich aus ihrer Sicht herausfordernd verhalten. Bausteine aus dem systemisch-konstruktivistischen Denkens sowie Grundannahmen der Lösungs- und Kompetenzorientierung und den verschiedenen Tools und Regeln werden in einem Handlungsmodell mit Ansätzen aus Erziehungsratgebern verknüpft. Weiter werden Interaktionen in professionellen Beratungsgesprächen sowie im familiären Rahmen beleuchtet und Kooperation, Widerstand sowie Macht und Abhängigkeit diskutiert. Die Gründe für herausforderndes Verhalten werden untersucht. All diese literarischen Recherchen ergeben, dass sich die aus den professionellen Beratungstätigkeiten angewandte Lösungs- und Kompetenzorientierung auch für den familiären Rahmen eignen und von Eltern und Bezugspersonen in den Interaktionen mit ihren Kindern genutzt werden können. Weiter zeigt sich, dass die Lösungs- und Kompetenzorientierung den Eltern verschiedene Verhaltensweisen bietet und ihnen ermöglicht, ihre Rolle neu zu definieren, die Eltern-Kind-Beziehung ins Zentrum zu rücken sowie der Selbstfürsorge mehr Beachtung zu schenken. Es wird aber auch klar, dass viele Faktoren, welche elterliches Verhalten beeinflussen sowie verschiedene Erziehungsstile, Grenzen der Lösungs- und Kompetenzorientierung in Interaktionen aufzeigen. Die grösste Begrenzung für die Nutzung des lösungs- und kompetenzorientierten Ansatzes ist dann gegeben, wenn die Eltern die Selbstkontrolle verlieren und dadurch nicht mehr handlungsfähig sind. Somit bleibt in den Interaktionen mit Kindern, trotz Einbeziehung der Lösungs- und Kompetenzorientierung, angemessenes elterliches Verhalten eine hohe Kunst.
description: + Code Diss LU: hslusa mas lko + Fussnote: Master-Arbeit MAS Lösungs- und Kompetenzorientierung, Hochschule Luzern – Soziale Arbeit, 2022 + NL-Code: NLLUHSA202211
EMI East Asia: Research Outputs and Research Tools (Questionnaires, Interview Guide)
Creators: name: Nicola Galloway (Coord.)
Publisher: name: Zenodo
Year: 2017

description: This research tool consists of questionnaires for students and staff, and interview guides for students, content staff and EAP instructors, aimed to understand how EMI is approached, the main driving forces behind EMI policy, and staff and student attitudes towards this policy in different contexts. It was used in a research study carried out at universities from Japan and China.
Neutron stars in Starobinsky model
Creators: name: Ganguly, Apratim
name: Gannouji, Radouane
name: Goswami, Rituparno
name: Ray, Subharthi
Publisher: name: arXiv
Year: 2013
Subjects: subject: General Relativity and Quantum Cosmology (gr-qc)
subject: Cosmology and Nongalactic Astrophysics (astro-ph.CO)
subject: High Energy Physics - Theory (hep-th)
subject: FOS: Physical sciences

description: We study the structure of neutron stars in $f(R)=R+αR^{2}$ theory of gravity (Starobinsky model), in an exact and non-perturbative approach. In this model, apart from the standard General Relativistic junction conditions, two extra conditions, namely the continuity of the curvature scalar and its first derivative needs to be satisfied. For an exterior Schwarzschild solution, the curvature scalar and its derivative has to be zero at the stellar surface. We show that for some equation of state (EoS) of matter, matching all conditions at the surface of the star is impossible. Hence the model brings two major fine-tuning problems: (i) only some particular classes of EoS are consistent with Schwarzschild at the surface and (ii) given that EoS, only a very particular set of boundary conditions at the centre of the star will satisfy the given boundary conditions at the surface. Hence we show that this model (and subsequently many other f(R) models where uniqueness theorem is valid) is highly unnatural, for the existence of compact astrophysical objects. This is because the EoS of a compact star should be completely determined by the physics of nuclear matter at high density and not the theory of gravity.
description: 10 pages, 6 figures. Expanded discussion and references added, results and conclusions unchanged. This version to appear in PRD
Viscous control of peeling an elastic sheet by bending and pulling
Creators: name: Lister, John R.
name: Peng, Gunnar G
name: Neufeld, Jerome A
Publisher: name: arXiv
Year: 2013
Subjects: subject: Fluid Dynamics (physics.flu-dyn)
subject: Soft Condensed Matter (cond-mat.soft)
subject: FOS: Physical sciences

description: Propagation of a viscous fluid beneath an elastic sheet is controlled by local dynamics at the peeling front, in close analogy with the capillary-driven spreading of drops over a precursor film. Here we identify propagation laws for a generic elastic peeling problem in the distinct limits of peeling by bending and peeling by pulling, and apply our results to the radial spread of a fluid blister over a thin pre-wetting film. For the case of small deformations relative to the sheet thickness, peeling is driven by bending, leading to radial growth as $t^{7/22}$. Experimental results reproduce both the spreading behaviour and the bending wave at the front. For large deformations relative to the sheet thickness, stretching of the blister cap and the consequent tension can drive peeling either by bending or by pulling at the front, both leading to radial growth as $t^{3/8}$. In this regime, detailed predictions give excellent agreement and explanation of previous experimental measurements of spread in the pulling regime in an elastic Hele-Shaw cell \cite{puzovic-2012}.
description: Updated middle author's middle initial
Tadarida espiritosantensis
Creators: name: Koopman, Karl F.
Publisher: name: Zenodo
Year: 1993
Subjects: Biodiversity
Taxonomy
Animalia
Chordata
Mammalia
Chiroptera
Molossidae
Tadarida
Tadarida espiritosantensis

description: Tadarida espiritosantensis (Ruschi, 1951). Bol. Mus. Biol. Prof. Mello-Leitao Zool., Santa Teresa, Espirito Santo, 7: 19. TYPE LOCALITY: Brazil, Espirito Santo, Santa Teresa, Treis Barras. DISTRIBUTION: Brazil. COMMENTS: Mentioned in Pine and Ruschi (1976); listed as a species by Freeman (1981:166). Probably a synonym of Nyctinomops laticaudatus.
description: Published as part of Karl F. Koopman, 1993, Order Chiroptera, pp. 137-241 in Mammal Species of the World (2 nd Edition), Washington and London :Smithsonian Institution Press on page 240, DOI: 10.5281/zenodo.7353060
description: {"references": ["Pine, R. H., and A. Ruschi. 1976. Concerning certain bats described and recorded from Espirito Santo, Brazil. Anales de Instituto de Biologia, Universidad Nacional Autonomica de Mexico, 47: 183 - 196.", "Freeman, P. W. 1981. A multivariate study of the family Molossidae (Mammalia: Chiroptera): Morphology, ecology, evolution. Fieldiana: Zoology, n. s., 7: 1 - 173."]}
Psychometric evidence of the assessment of social skills for Chinese children with autism
Creators: name: Jiang, Hui Shi
Publisher: name: No Publisher Supplied
Year: 2023

description: Social skills vary greatly across different cultures, as certain behaviors deemed acceptable in one culture can be perceived as inappropriate in another. Therefore, culturally specific assessments are needed for researchers and practitioners to evaluate social skills. The purpose of the current study was to evaluate the psychometric properties of the ASSCCA. A total of 624 participants, ages three to eight, with ASD had their social skills reported by their parents. Of these respondents, 49 parents completed the ASSCCA twice with a three-month time period in between assessments. 19 experts reviewed the ASSCCA for its relevance and clarity. The current study found that the ASSCCA met the criteria set forth in the current literature for appropriate reliability and validity. The ASSCCA demonstrated outstanding internal consistency and good to excellent test-retest reliability for its total score and subscales. Expert reviews supported the content validity of the measure, with substantial agreement on the relevance and clarity of the items. The internal structure validity, assessed through confirmatory factor analysis, provided mixed evidence, with satisfactory SRMR values but suboptimal CFI, TLI, and RMSEA values. Despite this, strong factor loadings were observed for all items on their respective subscales. The high correlation between the Communication Skills and Play Skills subscales suggests a potential overlap between these constructs. Overall, the ASSCCA demonstrates promising psychometric properties for assessing social skills in children with ASD, but further examination of its factor structure and potential modifications to enhance discriminant validity are warranted.
Tadarida fulminons
Creators: name: Koopman, Karl F.
Publisher: name: Zenodo
Year: 1993
Subjects: Biodiversity
Taxonomy
Animalia
Chordata
Mammalia
Chiroptera
Molossidae
Tadarida
Tadarida fulminons

description: Tadarida fulminons (Thomas, 1903). Ann. Mag. Nat. Hist., ser. 7, 12:501. TYPE LOCALITY: Madagascar, Betsilio, Fianarantsoa. DISTRIBUTION: E Zaire, Rwanda, Kenya, Tanzania, Zambia, Malawi, Zimbabwe, Transvaal (South Africa), Madagascar. SYNONYMS: mastersoni.
description: Published as part of Karl F. Koopman, 1993, Order Chiroptera, pp. 137-241 in Mammal Species of the World (2 nd Edition), Washington and London :Smithsonian Institution Press on page 240, DOI: 10.5281/zenodo.7353060
Ellipsoidal Rounding for Nonnegative Matrix Factorization Under Noisy Separability
Creators: name: Mizutani, Tomohiko
Publisher: name: arXiv
Year: 2013
Subjects: subject: Machine Learning (stat.ML)
subject: FOS: Computer and information sciences

description: We present a numerical algorithm for nonnegative matrix factorization (NMF) problems under noisy separability. An NMF problem under separability can be stated as one of finding all vertices of the convex hull of data points. The research interest of this paper is to find the vectors as close to the vertices as possible in a situation in which noise is added to the data points. Our algorithm is designed to capture the shape of the convex hull of data points by using its enclosing ellipsoid. We show that the algorithm has correctness and robustness properties from theoretical and practical perspectives; correctness here means that if the data points do not contain any noise, the algorithm can find the vertices of their convex hull; robustness means that if the data points contain noise, the algorithm can find the near-vertices. Finally, we apply the algorithm to document clustering, and report the experimental results.
description: 29 pages, 6 figures. Minor revisions; Revised Figure 2; Added Table 1
Beyond participation: Video workshops across Europe to engage in research with children and young people and teacher candidates as collaborators investigating ICT in education
Creators: name: Casamassima, Gianna
name: Eickelmann, Birgit
name: Labusch, Amelie
name: Drossel, Kerstin
name: Barbovschi, Monica
name: Gudmundsdottir, Greta
name: Holmarsdottir, Halla Bjørk
name: Mifsud, Louise
name: Kazani, Aggeliki
name: Parsanoglou, Dimitris
name: Symeonaki, Maria
name: Sisask, Merike
name: Teidla-Kunitsõn, Gertha
Publisher: name: Zenodo
Year: 2022
Subjects: ICT
education
video workshop
children and young people
teacher candidates

description: This paper presents a description of the innovative method of video workshops used in the DigiGen project and its implementation in the field of ICT in education in five European countries. This method aims at investigating children’s and young people’s reflections and perceptions on education preparing them for life in the digital age in Estonia, Germany, Greece, Norway, and Romania. Drawing on the collaborative ethnography approach followed in the DigiGen project, one important aspect of the video workshops is the participation of children and young people - together with teacher candidates - as co-researchers and experts. However, this paper is primarily intended to provide insights into the implementation of the video workshop method in these five countries and some initial implications that result from this.
On the evolution of the density pdf in strongly self-gravitating systems
Creators: name: Girichidis, Philipp
name: Konstandin, Lukas
name: Whitworth, Anthony P.
name: Klessen, Ralf S.
Publisher: name: arXiv
Year: 2013
Subjects: subject: Astrophysics of Galaxies (astro-ph.GA)
subject: Solar and Stellar Astrophysics (astro-ph.SR)
subject: FOS: Physical sciences

description: The time evolution of the probability density function (PDF) of the mass density is formulated and solved for systems in free-fall using a simple appoximate function for the collapse of a sphere. We demonstrate that a pressure-free collapse results in a power-law tail on the high-density side of the PDF. The slope quickly asymptotes to the functional form $\mathrm{P}_v(ρ)\proptoρ^{-1.54}$ for the (volume-weighted) PDF and $\mathrm{P}_m(ρ)\proptoρ^{-0.54}$ for the corresponding mass-weighted distribution. From the simple approximation of the PDF we derive analytic descriptions for mass accretion, finding that dynamically quiet systems with narrow density PDFs lead to retarded star formation and low star formation rates. Conversely, strong turbulent motions that broaden the PDF accelerate the collapse causing a bursting mode of star formation. Finally, we compare our theoretical work with observations. The measured star formation rates are consistent with our model during the early phases of the collapse. Comparison of observed column density PDFs with those derived from our model suggests that observed star-forming cores are roughly in free-fall.
description: accepted for publication, 13 pages
Leggett's Modes in Magnetic Systems with Jahn-Teller distortion
Creators: name: Karchev, Naoum
Publisher: name: arXiv
Year: 2013
Subjects: subject: Strongly Correlated Electrons (cond-mat.str-el)
subject: FOS: Physical sciences

description: Leggett's mode is a collective excitation corresponding to the oscillation of the relative phase of the order parameters in a two band superconductor, with frequency proportional to interband coupling. We report on the existence of modes, similar to Leggett's mode, in magnetic systems with Jahn-Teller distortion. The minimal Kugel-Khomskii model, which describes simultaneously both the spin and the orbital order, is studied. The dynamical degrees of freedom are spin-$s$ operators of localized spins and pseudospin-$τ$ operators, which respond to the orbital degeneracy and satisfy the similar commutation relation with those of the spin operators. In the case of "antiferro" spin and pseudospin order the system possesses two antiferromagnetic magnons with equal spin-wave velocities and two Leggett's modes with equal gaps proportional to the square root of the spin-pseudospin interaction constant. In the case of "ferro" spin and pseudospin order the system possesses one ferromagnetic magnon and one Leggett's mode with gap proportional to the spin-pseudospin interaction constant.
description: 8 pages, 2 figures
Photonic density of states enhancement in finite graphene multilayers
Creators: name: DaSilva, Ashley M
name: Chang, You-Chia
name: Norris, Ted
name: MacDonald, Allan H
Publisher: name: arXiv
Year: 2013
Subjects: subject: Mesoscale and Nanoscale Physics (cond-mat.mes-hall)
subject: FOS: Physical sciences

description: We consider the optical properties of finite systems composed of a series of graphene sheets separated by thin dielectric layers. Because these systems respond as conductors to electric fields in the plane of the graphene sheets and as insulators to perpendicular electric fields, they can be expected to have properties similar to those of hyperbolic metamaterials. We show that under typical experimental conditions graphene/dielectric multilayers have enhanced Purcell factors, and enhanced photonic densities-of-states in both the THz and mid-IR frequency range. These behaviors can be traced to the coupled plasmon modes of the multi-layer graphene system. We show that these results can be obtained with just a few layers of graphene.
description: 8 figures
Griffiths phases and the stretching of criticality in brain networks
Creators: name: Moretti, Paolo
name: Muñoz, Miguel A.
Publisher: name: arXiv
Year: 2013
Subjects: subject: Disordered Systems and Neural Networks (cond-mat.dis-nn)
subject: Neurons and Cognition (q-bio.NC)
subject: FOS: Physical sciences
subject: FOS: Biological sciences

description: Hallmarks of criticality, such as power-laws and scale invariance, have been empirically found in cortical networks and it has been conjectured that operating at criticality entails functional advantages, such as optimal computational capabilities, memory, and large dynamical ranges. As critical behavior requires a high degree of fine tuning to emerge, some type of self-tuning mechanism needs to be invoked. Here we show that, taking into account the complex hierarchical-modular architecture of cortical networks, the singular critical point is replaced by an extended critical-like region which corresponds --in the jargon of statistical mechanics-- to a Griffiths phase. Using computational and analytical approaches, we find Griffiths phases in synthetic hierarchical networks and also in empirical brain networks such as the human connectome and the caenorhabditis elegans one. Stretched critical regions, stemming from structural disorder, yield enhanced functionality in a generic way, facilitating the task of self-organizing, adaptive, and evolutionary mechanisms selecting for criticality.
description: Final version. A misprint in Equation (2) was corrected. Supplementary Information included
Aufsuchende Soziale Arbeit im Feld der Sexarbeit nach Lösungsund Kompetenzorientierung nachhaltig gestalten
Creators: name: Burkart, Eliane
Publisher: name: Zenodo
Year: 2022

description: Was kann Lösungs- und Kompetenzorientierung dazu beitragen, damit bei kurzem Kontakt in der aufsuchenden Sozialen Arbeit mit Sexarbeiter:innen ein Vertrauensaufbau im Hinblick auf eine kontinuierliche Zusammenarbeit stattfinden kann? Diese Masterarbeit befasst sich mit der Frage, wie aufsuchende Soziale Arbeit im Feld der Sexarbeit lösungs- und kompetenzorientiert gestaltet werden kann, damit bei kurzem Kontakt mit Sexarbeiter:innen ein Vertrauensaufbau im Hinblick auf eine kontinuierliche Zusammenarbeit stattfinden kann. Viele Sexarbeiter:innen in der Schweiz haben einen Migrationshintergrund. Der Aufenthaltsstatus, sowie die Branche führen daher zu häufigen Standortwechsel und entsprechend zu hoher nationaler und internationaler Mobilität. Diese Lebensrealitäten ziehen den Prozess des Vertrauensaufbaus in die Länge. Es zeigt sich, dass die Beziehungsgestaltung zwischen Berater:in und Sexarbeiter:in ein zentraler Punkt ist, damit ein guter Vertrauensaufbau gelingen kann. Es wird ersichtlich, dass in den Kontakten in der aufsuchenden Sozialen Arbeit möglichst viele authentische beziehungsförderliche Elemente einzubauen sind, um damit den Sexarbeiter:innen mit echter Wertschätzung, Empathie, Akzeptanz und Kongruenz zu begegnen. Durch die unmittelbare Zugewandtheit, Ressourcenaktivierung, zielgruppenspezifischem Wissen, Rollenklarheit, Transparenz und Informationen, welche Berater:innen über sich preisgeben, kann das Vertrauen wachsen. Das Beratungsmodell der Lösungs- und Kompetenzorientierung bietet verschiedene Möglichkeiten, um die Arbeitsbeziehung positiv und förderlich zu gestalten. Der Grundsatz, sich auf Augenhöhe und somit respektvoll zu begegnen, zeigt auf, dass alle Menschen Ressourcen haben und somit Schritt für Schritt Richtung Ziel vorangehen können. Es bestätigt sich, dass die Grundannahmen und einzelne Werkzeuge hilfreich sein können, um die Beziehungsgestaltung und den Vertrauensaufbau auch in kurzen Kontakten zu fördern.
description: + Code Diss LU: hslusa mas lko + Fussnote: Master-Arbeit MAS Lösungs- und Kompetenzorientierung, Hochschule Luzern – Soziale Arbeit, 2022 + NL-Code: NLLUHSA202211
Universality Classes of Critical Points in Constrained Glasses
Creators: name: Franz, Silvio
name: Parisi, Giorgio
Publisher: name: arXiv
Year: 2013
Subjects: subject: Statistical Mechanics (cond-mat.stat-mech)
subject: FOS: Physical sciences

description: We analyze critical points that can be induced in glassy systems by the presence of constraints. These critical points are predicted by the Mean Field Thermodynamic approach and they are precursors of the standard glass transition in absence of constraints. Through a deep analysis of the soft modes appearing in the replica field theory we can establish the universality class of these points. In the case of the "annealed potential" of a symmetric coupling between two copies of the system, the critical point is in the Ising universality class. More interestingly, is the case of the "quenched potential" where the a single copy is coupled with an equilibrium reference configuration, or the "pinned particle" case where a fraction of particles is frozen in fixed positions. In these cases we find the Random Field Ising Model (RFIM) universality class. The effective random field is a "self-generated" disorder that reflects the random choice of the reference configuration. The RFIM representation of the critical theory predicts non-trivial relations governing the leading singular behavior of relevant correlation functions, that can be tested in numerical simulations.
description: 27 pages, 1 figure. New version, accepted for publication in JSTAT. Added a detailed discussion of the annealed construction and the particle pinning one
Evaluating intact assemblages and potential for depth refuge at Tubbataha Reefs Natural Park and Cagayancillo MPAs, Philippines
Creators: name: Salvador, Mikaela
Publisher: name: Stanford Digital Repository
Year: 2026
Subjects: Baited camera
Deep reefs
Mesophotic reefs
Predatory fish
Video analysis

description: Overfishing remains a threat to coral reef fishes globally, with large carnivores often the most vulnerable. Marine protected areas (MPAs) can restore fish populations and biodiversity, but often their implementation and scientific study do not consider mesophotic coral ecosystems (MCEs – extensions of shallow reefs between the water depths of 30-150 m), which may be critical as a depth refuge for large carnivorous reef fish from fishing and large storms. I analyzed 65 videos recorded from baited remote underwater video systems deployed in 2016 to investigate the assemblage structure of large carnivorous fishes at shallow (4-12 m) and mesophotic (45-96 m) depths in two of the largest and most isolated MPAs in the Philippines: Tubbataha Reefs Natural Park (TRNP), a fully no-take MPA enacted in 1988; and Cagayancillo, an archipelagic municipality surrounded by an extensive but not fully no-take MPA declared in 2016. I identified and recorded the abundance and species richness of individuals within the taxa groupers (Serranidae), snappers (Lutjanidae), emperors (Lethrinidae), jacks (Carangidae), and the endangered Cheilinus undulatus (Labridae). Mean fish abundance and species richness were not greater in TRNP than in Cagayancillo, regardless of depth, despite long-term protection in the former. According to the PERMANOVA and nMDS, fish assemblages were distinct between the study locations TRNP and Cagayancillo, but more distinct between shallow and mesophotic depths at each location. In Cagayancillo, grouper and jack mean abundance were higher at mesophotic depths than at shallow depths. SIMPER analysis also showed that abundance of the most influential species in Cagayancillo were more abundant in mesophotic depths. Similar abundance and species richness observed at TRNP and Cagayancillo are likely due to limited impacts of fishing within Cagayancillo. Fish assemblages were more distinct between depths than between study locations, more likely due to habitat differences than MPA effects. Groupers and jacks having higher abundance in mesophotic depths may indicate that they are benefiting from depth refuge in Cagayancillo, which suggests that MCEs can serve as deep refugia. Overall, my findings emphasize that MCEs may be acting as critical habitat for fished species, and thus, they should be explicitly included and designated as a part of present and future MPAs.
Bounding sequence extremal functions with formations
Creators: name: Geneson, J. T.
name: Prasad, Rohil
name: Tidor, Jonathan
Publisher: name: arXiv
Year: 2013
Subjects: subject: Discrete Mathematics (cs.DM)
subject: Combinatorics (math.CO)
subject: FOS: Computer and information sciences
subject: FOS: Mathematics
subject: 05D99

description: An $(r, s)$-formation is a concatenation of $s$ permutations of $r$ letters. If $u$ is a sequence with $r$ distinct letters, then let $\mathit{Ex}(u, n)$ be the maximum length of any $r$-sparse sequence with $n$ distinct letters which has no subsequence isomorphic to $u$. For every sequence $u$ define $\mathit{fw}(u)$, the formation width of $u$, to be the minimum $s$ for which there exists $r$ such that there is a subsequence isomorphic to $u$ in every $(r, s)$-formation. We use $\mathit{fw}(u)$ to prove upper bounds on $\mathit{Ex}(u, n)$ for sequences $u$ such that $u$ contains an alternation with the same formation width as $u$. We generalize Nivasch's bounds on $\mathit{Ex}((ab)^{t}, n)$ by showing that $\mathit{fw}((12 \ldots l)^{t})=2t-1$ and $\mathit{Ex}((12\ldots l)^{t}, n) =n2^{\frac{1}{(t-2)!}α(n)^{t-2}\pm O(α(n)^{t-3})}$ for every $l \geq 2$ and $t\geq 3$, such that $α(n)$ denotes the inverse Ackermann function. Upper bounds on $\mathit{Ex}((12 \ldots l)^{t} , n)$ have been used in other papers to bound the maximum number of edges in $k$-quasiplanar graphs on $n$ vertices with no pair of edges intersecting in more than $O(1)$ points. If $u$ is any sequence of the form $a v a v' a$ such that $a$ is a letter, $v$ is a nonempty sequence excluding $a$ with no repeated letters and $v'$ is obtained from $v$ by only moving the first letter of $v$ to another place in $v$, then we show that $\mathit{fw}(u)=4$ and $\mathit{Ex}(u, n) =Θ(nα(n))$. Furthermore we prove that $\mathit{fw}(abc(acb)^{t})=2t+1$ and $\mathit{Ex}(abc(acb)^{t}, n) = n2^{\frac{1}{(t-1)!}α(n)^{t-1}\pm O(α(n)^{t-2})}$ for every $t\geq 2$.
description: 25 pages
Mapping continuous potentials to discrete forms
Creators: name: Thomson, Chris
name: Lue, Leo
name: Bannerman, Marcus N.
Publisher: name: arXiv
Year: 2013
Subjects: subject: Soft Condensed Matter (cond-mat.soft)
subject: FOS: Physical sciences

description: The optimal conversion of a continuous inter-particle potential to a discrete equivalent is considered here. Existing and novel algorithms are evaluated to determine the best technique for creating accurate discrete forms using the minimum number of discontinuities. This allows the event-driven molecular dynamics technique to be efficiently applied to the wide range of continuous force models available in the literature, and facilitates a direct comparison of event-driven and time-driven molecular dynamics. The performance of the proposed conversion techniques are evaluated through application to the Lennard-Jones model. A surprising linear dependence of the computational cost on the number of discontinuities is found, allowing accuracy to be traded for speed in a controlled manner. Excellent agreement is found for static and dynamic properties using a relatively low number of discontinuities. For the Lennard-Jones potential, the optimized discrete form outperforms the original continuous form at gas densities but is significantly slower at higher densities.
Joint modeling of multiple time series via the beta process with application to motion capture segmentation
Creators: name: Fox, Emily B.
name: Hughes, Michael C.
name: Sudderth, Erik B.
name: Jordan, Michael I.
Publisher: name: arXiv
Year: 2013
Subjects: subject: Methodology (stat.ME)
subject: Machine Learning (stat.ML)
subject: FOS: Computer and information sciences

description: We propose a Bayesian nonparametric approach to the problem of jointly modeling multiple related time series. Our model discovers a latent set of dynamical behaviors shared among the sequences, and segments each time series into regions defined by a subset of these behaviors. Using a beta process prior, the size of the behavior set and the sharing pattern are both inferred from data. We develop Markov chain Monte Carlo (MCMC) methods based on the Indian buffet process representation of the predictive distribution of the beta process. Our MCMC inference algorithm efficiently adds and removes behaviors via novel split-merge moves as well as data-driven birth and death proposals, avoiding the need to consider a truncated model. We demonstrate promising results on unsupervised segmentation of human motion capture data.
description: Published in at http://dx.doi.org/10.1214/14-AOAS742 the Annals of Applied Statistics (http://www.imstat.org/aoas/) by the Institute of Mathematical Statistics (http://www.imstat.org). arXiv admin note: text overlap with arXiv:1111.4226
Warum wurde ich nicht gefragt? Der lösungs- und kompetenzorientierte Ansatz als Orientierung für Fachpersonen um partizipative Prozesse in der stationären Jugendarbeit zu ermöglichen
Creators: name: Aeschlimann, Kevin
Publisher: name: Zenodo
Year: 2022

description: Diese Masterarbeit geht der Frage nach, wie der lösungs- und kompetenzorientierte Ansatz für Fachpersonen in der stationären Jugendarbeit hilfreich sein kann, um partizipative Prozesse zu ermöglichen. In den vergangenen Jahrzehnten wurden Kindern Beteiligungs- und Selbstbestimmungsrechte zugesprochen. Dieser gesellschaftliche Wandel führt dazu, dass bei der Kindererziehung Haltungen und Strukturen reflektiert werden (müssen). Diese Entwicklung macht auch vor Mitarbeitenden in Institutionen mit stationären Wohngruppen für Kinder und Jugendliche keinen Halt. Jugendliche wollen an ihren Entwicklungsprozessen teilhaben, sich einbringen und sich Gehör verschaffen. Partizipation soll als Recht und nicht als Methode verstanden werden, welche nur befristet zur Anwendung kommt. In der vorliegenden Arbeit wurde eine quantitative Befragung mit ehemals in der Ausbildungswohngruppe (AWG) der Stiftung Passaggio wohnhaften Jugendlichen durchgeführt. Damit wird exemplarisch aufgezeigt, inwiefern der Anspruch und die Realität zur Partizipation übereinstimmend sind. Der Wohngruppenaustritt der Zielgruppe liegt mindestens 22 Monate zurück, damit eine emotionale Distanz besteht und eine möglichst objektive Beurteilung stattfinden kann, wie Partizipation erlebt wurde. Die Konklusion lautet, dass der lösungs- und kompetenzorientierte Ansatz für Fachpersonen in stationären Wohngruppen hilfreich sein kann, um im Spannungsfeld zwischen Selbstbestimmung der Kinder und Jugendlichen, den Erwartungen von Personen aus dem Helfersystem sowie der Gesellschaft agieren zu können und somit partizipative Prozesse zu ermöglichen.
description: + Code Diss LU: hslusa mas lko + Fussnote: Master-Arbeit MAS Lösungs- und Kompetenzorientierung, Hochschule Luzern – Soziale Arbeit, 2022 + NL-Code: NLLUHSA202211
Engineering of waste Biomass-based active materials for application in current Lithium-ion Batteries and Beyond
Creators: name: SALIMI NADEM, PEJMAN
Publisher: name: Università degli studi di Genova
Year: 2023
Subjects: subject: Sustainability, Li-ion battery, Bio-based anodes, High-efficient, Next-generation batteries
subject: Sustainability
subject: Li-ion battery
subject: Bio-based anodes
subject: High-efficient
subject: Next-generation batteries

description: The goal of the current thesis, which represents a significant collaborative effort between four institutions and universities (Italian Institute of Technology, University of Genoa, CA' Foscari University of Venice, and Hasselt University), is to summarize the most recent findings in the area of sustainable secondary batteries by utilizing various waste biomass through a specific carbonization treatment, or a waste-to-energy action. Since it is generally known that the components of conventional secondary batteries have an adverse effect on the environment, research on eco-friendly alternatives are both extremely desirable and necessary. In this respect, our work aims to make a significant advancement in this area, bringing us one step closer to practical lithium-ion batteries (LIBs) with minimal environmental impact. Herein, we have tackled the sustainable batteries problem by breaking it down in its main parts, namely what kind of bio resources materials to exploit and their treatment to make them suitable to run as battery anode. Our materials choice was motivated by the desire to secondary use of waste biomass, would surely be beneficial both from an environmental and economical point of views. In line with the philosophy of a reduced environmental impact, the engineering of biochar was based on steam and CO2 activations, neither of them recognized as dangerous procedures. Additionally, for preparing fully sustainable and environmentally friendly LIBs anodes, deionized water and carboxymethyl cellulose (CMC) have been used as alternatives to toxic/teratogen N-methyl-2- pyrrolidone (NMP) and to biologically hazardous Polyvinylidene fluoride (PVdF), respectively. Furthermore, going towards reduced cost, we have employed water solvent and flouride-free bio-derived CMC binders. Indeed, to provide a scenario as complete as possible, the results achieved for half-cell batteries were also confirmed in a full battery configuration where LiFePO4 (LFP), and sulfur cathodes were used, the latter being particularly attractive in the emerging field of sulfur-based batteries. All in all, we believe that the combination of these actions goes in the direction of the 2030 goal of having green LIBs at 100 $ /kW h-1. Last but not least, we have also provided a detailed comparison in terms of performance, where we highlight how our results outperform anything reported to date, with the intention of giving a general picture of the state-of-the-art in this field and with the desire for precise positioning of our results.
Some Implications of Two Forms of the Generalized Uncertainty Principle
Creators: name: Khalil, Mohammed M.
Publisher: name: arXiv
Year: 2013
Subjects: subject: High Energy Physics - Theory (hep-th)
subject: General Relativity and Quantum Cosmology (gr-qc)
subject: FOS: Physical sciences

description: Various theories of quantum gravity predict the existence of a minimum length scale, which leads to the modification of the standard uncertainty principle to the Generalized Uncertainty Principle (GUP). In this paper, we study two forms of the GUP and calculate their implications on the energy of the harmonic oscillator and the Hydrogen atom more accurately than previous studies. In addition, we show how the GUP modifies the Lorentz force law and the time-energy uncertainty principle.
description: 9 pages, 3 figures
MezzMezzMezz Trade Model
Creators: name: Lee, David
Publisher: name: Zenodo
Year: 2022
Subjects: MezzMezzMezz Trade Model

description: The MezzMezzMezz trade model is a synthetic Collateral Debt Obligation (CDO) structure in which the collateral pool is composed of tranches issued under MezzOfMezz or Caribou structures. Each participating MezzOfMezz tranche is a CDO mezz tranche defined by a threshold and a principal. Several such MezzOfMezz tranches are aggregated and tranched into MezzMezzMezz tranches. Within the existing modelling framework the model is implemented by adding a layer of CDO structure to the MezzOfMezz model.
description: https://ia601404.us.archive.org/25/items/bondBootstrapping/bondBootstrapping.pdf
Rheology near jamming - the influence of lubrication forces
Creators: name: Maiti, Moumita
name: Heussinger, Claus
Publisher: name: arXiv
Year: 2013
Subjects: subject: Soft Condensed Matter (cond-mat.soft)
subject: FOS: Physical sciences

description: We study, by computer simulations, the role of different dissipation forces on the rheological properties of highly-dense particle-laden flows. In particular, we are interested in the close-packing limit (jamming) and the question if "universal" observables can be identified that do not depend on the details of the dissipation model. To this end, we define a simplified lubrication force and systematically vary the range $h_c$ of this interaction. For fixed $h_c$ a cross-over is seen from a Newtonian flow regime at small strain rates to inertia-dominated flow at larger strain rates. The same cross-over is observed as a function of the lubrication range $h_c$. At the same time, but only at high densities close to jamming, particle velocity as well as local density distributions are unaffected by changes in the lubrication range -- they are candidates for "universal" behavior. At densities away from jamming, this universality is lost: short-range lubrication forces lead to pronounced particle clustering, while longer-ranged lubrication does not. These findings highlight the importance of "geometric" packing constraints for particle motion -- independent of the specific dissipation model. With the free volume vanishing at random-close packing, particle motion is more and more constrained by the ever smaller amount of free space. On the other side, macroscopic rheological observables, as well as higher-order correlation functions retain the variability of the underlying dissipation model.
Topological matter: graphene and superfluid 3He
Creators: name: Katsnelson, M. I.
name: Volovik, G. E.
Publisher: name: arXiv
Year: 2013
Subjects: subject: Mesoscale and Nanoscale Physics (cond-mat.mes-hall)
subject: FOS: Physical sciences

description: Physics of graphene and physics of superfluid phases of 3He have many common features. Both systems are topological materials where quasiparticles behave as relativistic massless (Weyl, Majorana or Dirac) fermions. We formulate the points where these features are overlapping. This will allow us to use graphene for study the properties of superfluid 3He, to use superfluid 3He for study the properties of graphene, and to use the combination to study the physics of topological quantum vacuum. We suggest also some particular experiments with superfluid 3He using graphene as an atomically thin membrane impenetrable for He atoms but allowing for spin, momentum and energy transfer.
description: 12 pages, no figures, JOLT style, prepared for Proceedings of Microkelvin Workshop 2013, modified after referee reports
Doctoral thesis recital (clarinet)
Creators: name: Young, Abbey
Publisher: name: The University of Texas at Austin
Year: 2022
Subjects: Sonatas (Clarinet and piano)
Trios (Piano, clarinets (2))
Clarinet and electronic music
Clarinet and piano music

description: Sonata op. 128 / Mario Castelnuovo-Tedesco -- New York counterpoint / Steve Reich -- Il convegno / Amilcare Ponchielli -- [unidentified work]
Experimental recovery of a qubit from partial collapse
Creators: name: Sherman, J. A.
name: Curtis, M. J.
name: Szwer, D. J.
name: Allcock, D. T. C.
name: Imreh, G.
name: Lucas, D. M.
name: Steane, A. M.
Publisher: name: arXiv
Year: 2013
Subjects: subject: Quantum Physics (quant-ph)
subject: Atomic Physics (physics.atom-ph)
subject: Optics (physics.optics)
subject: FOS: Physical sciences

description: We describe and implement a method to restore the state of a single qubit, in principle perfectly, after it has partially collapsed. The method resembles the classical Hahn spin-echo, but works on a wider class of relaxation processes, in which the quantum state partially leaves the computational Hilbert space. It is not guaranteed to work every time, but successful outcomes are heralded. We demonstrate using a single trapped ion better performance from this recovery method than can be obtained employing projection and post-selection alone. The demonstration features a novel qubit implementation that permits both partial collapse and coherent manipulations with high fidelity.
description: 5 pages, 3 figures
A DEEP UNDERSTANDING OF EBOLA VIRUS VLP ASSEMBLY: AN ODE-BASED MODELING APPROACH
Creators: name: Liu, Xiao
Publisher: name: Purdue University Graduate School
Year: 2023
Subjects: Bioinformatics and computational biology not elsewhere classified
Biomedical engineering not elsewhere classified

description: Ebola virus (EBOV) infection remains to be a challenge to human health by its high mortality rate. Though it has been discovered for almost 50 years, there are only two antibody-based therapies approved today, and the mortality rate is still greater than 30% with the treatment. Authentic EBOV studies are strictly limited to biosafety level-4 (BSL-4) labs, which slows the development of treatment. While more simple and safer systems have been developed to understand different stages of EBOV infection, such as the matrix protein (VP40) virus-like particle (VLP) and minigenome systems, we still lack a systematical view of EBOV infection. On the other hand, mathematical modeling has been used to assist biological and medical studies for many years, as it has the advantage of integrating data and providing quantitative insight to a biosystem. In our study, we took advantage of mathematical modeling and build the primary ordinary differential equation-based (ODE-based) model of EBOV at subcellular level step by step. We built the budding pathway of EBOV VP40 first, calibrated and validated our model with experimental data. We proposed that phosphatidylserine (PS) can directly influence the stability of VP40 filaments and the budding process of VLPs. Also, the oligomerization of VP40 filaments may follow the nucleation-elongation process. Next, we conducted in-silico simulation to evaluate the treatment efficiency of fendiline, a drug lowering cell membrane PS level, in treating EBOV. We found that while in general, fendiline can decrease VLP production, there can be fendiline-induced VLP production increases at certain time points due to slow filament growth or fast VLP budding rates. Also, we concluded that fendiline is relatively more effective when applied in the budding stage of EBOV life cycle. Moreover, fendiline efficacy may increase when applied with a VLP budding step targeted treatment. Finally, we integrated nucleoprotein (NP) into our model. We reproduced the two-stage interaction between NP and VP40 and predict that NP increases VLP production through influencing filament oligomerization and VLP budding steps. Also, the dual-effect of NP on VLP production may exist, as a too high NP/VP40 production ratio can decrease VLP production. From the aspect of protein expression time, we found that a bit earlier NP production than VP40 production is beneficial for both inclusion body-containing (IB-containing) VLP production and prevention in energy waste on production of VLPs without IBs. Overall, we have built a solid foundation towards a mathematical EBOV model and demonstrated the value of models in assisting experimental EBOV studies.
Topological phases of generalized Su-Schrieffer-Heeger models
Creators: name: Li, Linhu
name: Xu, Zhihao
name: Chen, Shu
Publisher: name: arXiv
Year: 2013
Subjects: subject: Mesoscale and Nanoscale Physics (cond-mat.mes-hall)
subject: Strongly Correlated Electrons (cond-mat.str-el)
subject: FOS: Physical sciences

description: We study the extended Su-Schrieffer-Heeger model with both the nearest-neighbor and next-nearest-neighbor hopping strengths being cyclically modulated and find the family of the model system exhibiting topologically nontrivial phases, which can be characterized by a nonzero Chern number defined in a two-dimensional space spanned by the momentum and modulation parameter. It is interesting that the model has a similar phase diagram as the well-known Haldane's model. We propose to use photonic crystal systems as the idea systems to fabricate our model systems and probe their topological properties. Some other models with modulated on-site potentials are also found to exhibit similar phase diagrams and their connection to the Haldane's model is revealed.
description: 6 pages, 5 figures
Quantum speedup in a memory environment
Creators: name: Xu, Zhen-Yu
name: Luo, Shunlong
name: Yang, W. L.
name: Liu, Chen
name: Zhu, Shiqun
Publisher: name: arXiv
Year: 2013
Subjects: subject: Quantum Physics (quant-ph)
subject: FOS: Physical sciences

description: Memory (non-Markovian) effect is found to be able to accelerate quantum evolution [S. Deffner and E. Lutz, Phys. Rev. Lett. 111, 010402 (2013)]. In this work, for an atom in a structured reservoir, we show that the mechanism for the speedup is not only related to non-Markovianity but also to the population of excited states under a given driving time. In other words, it is the competition between non-Markovianity and population of excited states that ultimately determines the acceleration of quantum evolution in memory environment. A potential experimental realization for verifying the above phenomena is discussed by using a nitrogen-vacancy (N-V) center embedded in a planar photonic crystal cavity (PCC) under the current experimental conditions.
description: 6 pages, 4 figures, published version
The Hartree equation for infinitely many particles. I. Well-posedness theory
Creators: name: Lewin, Mathieu
name: Sabin, Julien
Publisher: name: arXiv
Year: 2013
Subjects: subject: Mathematical Physics (math-ph)
subject: Analysis of PDEs (math.AP)
subject: FOS: Physical sciences
subject: FOS: Mathematics

description: We show local and global well-posedness results for the Hartree equation $$i\partial_tγ=[-Δ+w*ρ_γ,γ],$$ where $γ$ is a bounded self-adjoint operator on $L^2(\R^d)$, $ρ_γ(x)=γ(x,x)$ and $w$ is a smooth short-range interaction potential. The initial datum $γ(0)$ is assumed to be a perturbation of a translation-invariant state $γ_f=f(-Δ)$ which describes a quantum system with an infinite number of particles, such as the Fermi sea at zero temperature, or the Fermi-Dirac and Bose-Einstein gases at positive temperature. Global well-posedness follows from the conservation of the relative (free) energy of the state $γ(t)$, counted relatively to the stationary state $γ_f$. We indeed use a general notion of relative entropy, which allows to treat a wide class of stationary states $f(-Δ)$. Our results are based on a Lieb-Thirring inequality at positive density and on a recent Strichartz inequality for orthonormal functions, which are both due to Frank, Lieb, Seiringer and the first author of this article.
description: to appear in Comm. Math. Phys