cometadata/datacite-rtg-text-other-reclassification-records huggingface dataset:
title: The Association Between Organisational Support, Self-Regulation, Person-Organisation Fit and Work-Outcome Variables
Creators: name: Supeli, Abas
Publisher: name: Griffith University
Year: 2013
Subjects: subject: Person-organisation fit
subject: Job satisfaction
subject: Organisational outcomes

description: Although numerous studies have examined the relationship between person-organisation fit (P-O fit) and organisational outcome variables, there is still little consensus and much confusion over a number of important issues regarding conceptualisation, operationalisation, and criteria used to measure P-O fit. Moreover, some inconsistent relationships have been found between P-O fit and outcome variables. This program of studies aimed to overcome limitations of previous P-O fit studies, to clarify the predictors of P-O fit, and to examine the relationships between P-O fit and important organisational outcome variables. The main objectives of the program were: (a) to investigate the role of goal congruence in the assessment of P-O fit, (b) to examine the role of organisational support and self-regulation (feedback seeking, proactive behaviour, emotional control, and social competence) in predicting P-O fit, (c) to assess the mediating role of P-O fit on the relationship between organisational support and self-regulation and the outcome variables of job satisfaction, organisational commitment, and job performance, (d) to test the mediating role of job satisfaction, organisational commitment, and job performance on the relationship between P-O fit and intention to quit, and (e) to investigate the development of P-O fit and the contribution of organisational support and self-regulation to the outcome variables after a period of 6 months. The data were collected from a large-scale electronic manufacturing company in Indonesia. This research has made several important contributions to the P-O fit literature that could improve understanding about P-O fit, and has implications for both the organisation as employer and the person as employee, in terms of improving the positive interaction between them and enhancing their productivity. This research program consisted of three studies. The first part of this program of studies related to the development of a goal congruence measure, which has been accepted for publication. The second part of this program of studies comprises two papers, which have been submitted for publication, related to the association among all research variables cross-sectionally and longitudinally. An overview of the program of studies and literature review are presented in Chapter 1, whilst general discussion, empirical evidence, contribution to the P-O fit literature, practical implication, and methodological shortcomings and suggestions for future studies are synthesised in the last chapter of this thesis.
Upper continuity bound on the quantum quasi-relative entropy
Creators: name: Vershynina, Anna
Publisher: name: arXiv
Year: 2019
Subjects: subject: Quantum Physics (quant-ph)
subject: FOS: Physical sciences

description: We provide an upper bound on the quasi-relative entropy in terms of the trace distance. The bound is derived for two cases: 1) any operator monotone decreasing function and full rank mixed qubit or classical states; 2) a large class of operator monotone decreasing function and any mixed qubit or classical states. Moreover, we derive an upper bound for the Umegaki and Tsallis relative entropies in the case of any finite-dimensional states. The bound for the relative entropy improves the known bounds for some states in any dimensions larger than four. The bound for the Tsallis entropy improves the known bounds.
title: Plagiothecium undulatum
title: Gewelltes Plattmoos (Plagiothecium undulatum)
titleType: AlternativeTitle
Creators: name: Schulz, Herbert
Publisher: name: Universitätsbibliothek Braunschweig
Year: 2006
Subjects: subject: Diasammlung Herbert Schulz
subject: 580

description: Enthält 13 Bilder des Gewellten Plattmooses.
Quantum in the media: A content analysis of frames in Dutch newspapers
Creators: name: Meinsma, Aletta Lucia
name: Rothe, Thomas
name: Reijnierse, W. Gudrun
name: Smeets, Ionica
name: Cramer, Julia
Publisher: name: arXiv
Year: 2024
Subjects: subject: Physics and Society (physics.soc-ph)
subject: Physics Education (physics.ed-ph)
subject: FOS: Physical sciences

description: Quantum technology is expected to have an impact on society. Scientists warn against the use of certain frames because they may create barriers to effective science communication. We studied 385 Dutch newspaper articles for the use of these frames. Newspapers commonly explained quantum concepts when mentioning quantum technology. They also regularly framed quantum technology as beneficial and enigmatic, often in prominent positions of the articles. The economic development/competitiveness frame, the social progress frame and the risk frame were less common. Although these frames are only potential barriers, we encourage journalists to weigh them when communicating about quantum technology.
description: 33 pages, 6 figures
title: Mnium spec.
title: Sternmoos (Mnium spec.)
titleType: AlternativeTitle
Creators: name: Schulz, Herbert
Publisher: name: Universitätsbibliothek Braunschweig
Year: 2006
Subjects: subject: Diasammlung Herbert Schulz
subject: 580

description: Enthält 3 Bilder des Sternmooses.
The Generalized Trust Region Subproblem: solution complexity and convex hull results
Creators: name: Wang, Alex L.
name: Kilinc-Karzan, Fatma
Publisher: name: arXiv
Year: 2019
Subjects: subject: Data Structures and Algorithms (cs.DS)
subject: Optimization and Control (math.OC)
subject: FOS: Computer and information sciences
subject: FOS: Mathematics

description: We consider the Generalized Trust Region Subproblem (GTRS) of minimizing a nonconvex quadratic objective over a nonconvex quadratic constraint. A lifting of this problem recasts the GTRS as minimizing a linear objective subject to two nonconvex quadratic constraints. Our first main contribution is structural: we give an explicit description of the convex hull of this nonconvex set in terms of the generalized eigenvalues of an associated matrix pencil. This result may be of interest in building relaxations for nonconvex quadratic programs. Moreover, this result allows us to reformulate the GTRS as the minimization of two convex quadratic functions in the original space. Our next set of contributions is algorithmic: we present an algorithm for solving the GTRS up to an epsilon additive error based on this reformulation. We carefully handle numerical issues that arise from inexact generalized eigenvalue and eigenvector computations and establish explicit running time guarantees for these algorithms. Notably, our algorithms run in linear (in the size of the input) time. Furthermore, our algorithm for computing an epsilon-optimal solution has a slightly-improved running time dependence on epsilon over the state-of-the-art algorithm. Our analysis shows that the dominant cost in solving the GTRS lies in solving a generalized eigenvalue problem -- establishing a natural connection between these problems. Finally, generalizations of our convex hull results allow us to apply our algorithms and their theoretical guarantees directly to equality-, interval-, and hollow- constrained variants of the GTRS. This gives the first linear-time algorithm in the literature for these variants of the GTRS.
Lagrangian Perturbation Theory for Biased Tracers: Significance of the Number Conservation
Creators: name: Espenshade, Peter
name: Yoo, Jaiyul
Publisher: name: arXiv
Year: 2024
Subjects: subject: Cosmology and Nongalactic Astrophysics (astro-ph.CO)
subject: FOS: Physical sciences

description: The Lagrangian perturbation theory provides a simple yet powerful way of computing the nonlinear matter power spectrum, and it has been applied to biased tracers such as halos and galaxies. The number conservation of matter particles allows a simple relation between the fluctuations at the initial and the late times, which is essential in deriving the exact expression for the nonlinear matter power spectrum. Here we investigate the significance of the number conservation in the Lagrangian perturbation theory for biased tracers. We use $N$-body simulations to test the significance of number conservation by tracing dark matter halo samples in time. For the mass bin sample $Δ\log M_h~(h^{-1}M_{\odot})= 0.5$ at $z\simeq3$, the theoretical predictions for the halos overestimates the power spectrum at $z=0$ by a factor of three, while the simulation results match the theoretical predictions if the number conservation of halos is imposed in the simulations throughout the evolution. Starting with a halo sample at $z=0$ as another test, we trace back in time the particles that belong to the halos at~$z=0$ and use their center-of-mass positions as halo positions at $z>0$. The halo power spectra at $z>0$ from the simulations agree with the theoretical predictions of the Lagrangian perturbation theory. This numerical experiment proves that the number conservation is crucial in the Lagrangian perturbation theory predictions. We discuss the implications for various applications of the Lagrangian perturbation theory for biased tracers.
description: 8 pages, 3 figures, accepted for publication in ApJ
title: Racomitrium aciculare
title: Zackenmützenmoos (Racomitrium aciculare)
titleType: AlternativeTitle
Creators: name: Schulz, Herbert
Publisher: name: Universitätsbibliothek Braunschweig
Year: 2006
Subjects: subject: Diasammlung Herbert Schulz
subject: 580

description: Enthält 2 Bilder des Zackenmützenmooses.
Wavefunction and level statistics of random two dimensional gauge fields
Creators: name: Verges, J. A.
Publisher: name: arXiv
Year: 1996
Subjects: subject: Condensed Matter (cond-mat)
subject: Chaotic Dynamics (nlin.CD)
subject: FOS: Physical sciences

description: Level and wavefunction statistics have been studied for two dimensional clusters of the square lattice in the presence of random magnetic fluxes. Fluxes traversing lattice plaquettes are distributed uniformly between - (1/2) Phi_0 and (1/2) Phi_0 with Phi_0 the flux quantum. All considered statistics start close to the corresponding Wigner-Dyson distribution for small system sizes and monotonically move towards Poisson statistics as the cluster size increases. Scaling is quite rapid for states close to the band edges but really difficult to observe for states well within the band. Localization properties are discussed considering two different scenarios. Experimental measurement of one of the considered statistics --wavefunction statistics seems the most promising one-- could discern between both possibilities. A real version of the previous model, i.e., a system that is invariant under time reversal, has been studied concurrently to get coincidences and differences with the Hermitian model.
description: 12 twocolumnn pages in revtex style, 17 postscript figures, to be published in PRB, send comments to jav@boston.icmm.csic.es
Anomalous specific heat peak of BaVS$_3$ at 69 K explained by enhanced electron scattering upon ion relocation
Creators: name: Márkus, Ferenc
name: Márkus, Bence G.
Publisher: name: arXiv
Year: 2019
Subjects: subject: Strongly Correlated Electrons (cond-mat.str-el)
subject: FOS: Physical sciences

description: The present study deals with the anomalous heat capacity peak and thermal conductivity of BaVS$_3$ near the metal-insulator transition present at $69$ K. The transition is related to a structural transition from an orthorhombic to monoclinic phase. Heat capacity measurements at this temperature exhibit a significant and relatively broad peak, which is also sample dependent. The present study calculates the entropy increase during the structural transition and we show that the additional entropy is caused by enhanced electron scattering as a result of the structural reorientation of the nuclei. Within the model it is possible to explain quantitatively the observed peak alike structure in the heat capacity and in heat conductivity.
Figure S3 Ancestral Character Estimates Bantu from A worldwide view of matriliny: using cross-cultural analyses to shed light on human kinship systems
Creators: name: Surowiec, Alexandra
name: Snyder, Kate T.
name: Creanza, Nicole
Publisher: name: The Royal Society
Year: 2019
Subjects: subject: Evolutionary Biology
subject: FOS: Biological sciences
subject: 60801 Animal Behaviour
subject: Computational Biology

description: Although matriliny and matrilocality are relatively rare in contemporary human populations, these female-based descent and residence systems are present in different cultural contexts and across the globe. Previous research has generated numerous hypotheses about which cultural traits are associated with the stability or loss of matrilineal descent. In addition, several studies have examined matrilineal descent with phylogenetic analyses; however, the use of language phylogenies has restricted these analyses to comparisons within a single language family, often confined to a single continent. Cross-cultural comparisons are particularly informative when they account for the relationships between widely distributed populations, as opposed to treating each population as an independent sample or focusing on a single region. Here, we study the evolution of descent systems on a worldwide scale. First, we test for significant associations between matriliny and numerous cultural traits that have been theoretically associated with its stability or loss, such as subsistence strategy, animal domestication, mating system, residence pattern, wealth transfer and property succession. In addition, by combining genetic and linguistic information to build a global supertree that includes 16 matrilineal populations, we also perform phylogenetically controlled analyses to assess the patterns of correlated evolution between descent and other traits: for example, does a change in subsistence strategy generally predict a shift in the rules of descent, or do these transitions happen independently? These analyses enable a worldwide perspective on the pattern and process of the evolution of matriliny and matrilocality.This article is part of the theme issue ‘The evolution of female-biased kinship in humans and other mammals’.
Exploring the Learning Process of DIY Fashion Designers Embracing Entrepreneurship
Creators: Ree, Ashli
Publisher: name: Columbia University
Year: 2021
Subjects: Adult education
Fashion designers
Entrepreneurship
Do-it-yourself work
Social networks

description: The purpose of this explorative field study using elements of case study design was to understand how DIY (Do It Yourself) fashion designers learn to engage in entrepreneurship. DIY fashion designers in this study refers to designers who personally design and make each garment without relying on manufacturers. These fashion designers all have design skills, but as they transition from designer to designer-entrepreneur with existing skills, they realize an additional set of skills is needed. To understand why they started the business and how they learned the skills necessary to maintain this dual role, the researcher interviewed 20 designer-entrepreneurs with different levels of experience: novice (3-5 years), middle-level (6-10 years), and seasoned (11 plus years). A selected literature review was conducted to shed light on the work of other researchers related to fashion entrepreneurship, entrepreneurship, and adult learning. The researcher used a qualitative methodology to explore how the designer-entrepreneurs learned and what they learned to maintain their dual role. A purposeful sample was drawn from a group of designer-entrepreneurs with different educational backgrounds and professional experiences. Data were collected through individual interviews followed by two focus group discussions. Data were examined to understand why certain DIY fashion designers chose to become designer-entrepreneurs, what challenges they faced in the dual role, how and what they learned, and which learning strategies they used. All designer-entrepreneurs in this study indicated that the motivation for becoming a designer-entrepreneur was to address their inner needs, which required both intrinsic reward and extrinsic validation. An overwhelming majority of them stated that most of the challenges stemmed from the entrepreneurial half of their dual role because they lacked the information needed to sustain it. All designer-entrepreneurs in this study learned through experiential and self-directed learning. A majority of them indicated that their main learning strategies consisted of finding or forming social networks for their design and business needs and developing their own learning habits. Based on these findings, the researcher made recommendations for educators teaching fashion or entrepreneurship and for current designer-entrepreneurs.
Smoothness and monotonicity of the excursion set density of planar Gaussian fields
Creators: name: Beliaev, Dmitry
name: McAuley, Michael
name: Muirhead, Stephen
Publisher: name: arXiv
Year: 2019
Subjects: subject: Probability (math.PR)
subject: FOS: Mathematics
subject: 60G60, 60G15, 58K05

description: Nazarov and Sodin have shown that the number of connected components of the nodal set of a planar Gaussian field in a ball of radius $R$, normalised by area, converges to a constant as $R\to \infty $. This has been generalised to excursion/level sets at arbitrary levels, implying the existence of functionals $c_{ES}(\ell )$ and $c_{LS}(\ell )$ that encode the density of excursion/level set components at the level $\ell $. We prove that these functionals are continuously differentiable for a wide class of fields. This follows from a more general result, which derives differentiability of the functionals from the decay of the probability of `four-arm events' for the field conditioned to have a saddle point at the origin. For some fields, including the important special cases of the Random Plane Wave and the Bargmann-Fock field, we also derive stochastic monotonicity of the conditioned field, which allows us to deduce regions on which $c_{ES}(\ell )$ and $c_{LS}(\ell )$ are monotone.
description: 39 pages, 8 figures. Updated to match published version
Stable sheaves on elliptic fibrations
Creators: name: Ruiperez, D. Hernandez
name: Porras, J. M. Munoz
Publisher: name: arXiv
Year: 1998
Subjects: subject: Algebraic Geometry (math.AG)
subject: FOS: Mathematics
subject: 14D20 (Primary) 14J60, 14J27,14H40, 83E30 (Secondary)

description: We characterize the subscheme of the moduli space of torsion-free sheaves on an elliptic surface which are stable of relative degree zeero (with respect to a polarization of type aH+bf, H being the section and f the elliptic fibre) which is isomorphic, via the relative Fourier-Mukai transform, with the relative compactified Simpson Jacobian of the family of those curves D in the surface which are flat over the base of the elliptic fibration. This generalizes and completes earlier constructions due to Friedman, Morgan and Witten. We also study the relative moduli scheme of sheaves whose restriction to each fibre is torsion-free and semistable of rank n and degree zero for higher dimensional elliptic fibrations. The relative Fourier-Mukai transform induces an isomorphic between this relative moduli space and the relative n-th symmetric product of the fibration.
description: AMS-LaTeX, 18 pages, XY-pic; new title, some modifications; final version as accepted in J. Geom. Phys
Chemotaxis Control (Figure 3C).rar
Creators: name: Bringas, Carlos
name: Fuente, Ildefonso Martínez De La
name: Malaina, Iker
name: Fedetz, María
name: Carrasco-Pujante, Jose
name: Morales, Miguel
name: Knafo, Shira
name: Martínez, Luis
name: Samartín, Alberto Pérez-
name: López, José I.
name: Pérez-Yarza, Gorka
name: Boyano, María Dolores
Publisher: name: figshare
Year: 2019
Subjects: Uncategorized

description: Videos and Matlab files corresponding to each cellular trajectory discussed in the papers "Evidences of Conditioned Behavior in Amoeba proteus"
title: Explorations in Quantum Measurement and Control
Creators: name: Chia, Andy
Publisher: name: Griffith University
Year: 2011
Subjects: subject: Quantum measurement
subject: Linear-quadratic Gaussian
subject: Markovian feedback control
subject: Non-linear systems

description: This thesis presents the theory of LQG (linear-quadratic-Gaussian) and Markovian feedback control for quantum systems. We devote Part I to a review of both classical and quantum feedback but with an emphasis on LQG and linear systems control. The language of classical stochastic control is that of probability theory and stochastic differential equations. Thus we first introduce the essential mathematics (within the context of measurement and control) such as the Kushner– Stratonovich and Langevin equations. We then specialize to linear classical systems and introduce traditional engineering principles such as stabilizing solutions of Riccati equations, controllability, certainty equivalence, and the like. The classical Kushner–Stratonovich and Langevin equations have well-known quantum analogues — the stochastic master equation and the quantum Langevin equation. These, and other relevant tools for doing quantum feedback control are reviewed. Subsequently the concepts of stabilizing solutions of Riccati equations, controllability, separation theorem, amongst other related notions are shown to be adaptable for quantum systems. An essential difference between quantum and classical feedback lies in the in-loop measurement. Quantum measurements induce quantum backaction, non-existent in classsical measurements. This means the measurement strength and strategy in a quantum feedback loop should be optimized for a given control objective. We illustrate each of these points with examples in LQG control. Part II is devoted to the theory of diffusive quantum measurements (measurements that have Gaussian distributed outcomes) and Markovian feedback control for nonlinear systems. A new and general representation of diffusive quantum measurements is derived. This representation is compared with an old representation (which we introduce in Part I) and shown to possess advantages over the old representation. We also propose a quantum optical scheme as a universal method for physically realizing diffusive quantum measurements. Our new representation of diffusive measurements is then applied to build a general theory of multiple-input multiple-output Markovian quantum feedback. Previously known results of Markovian feedback are reproduced as special cases of this more general framework.This work has not previously been submitted for a degree or diploma in any university. To the best of my knowledge and belief, the thesis contains no material previously published or written by another person except where due reference is made in the thesis itself.
Prehistory without pots : prehistoric settlement and economy of north-west Guadalcanal, Solomon Islands
Creators: name: Roe, David
Publisher: name: The Australian National University
Year: 1993
Subjects: Archaeology / Prehistory / Melanesia / Oceania / Solomon Islands / Guadalcanal

description: This thesis seeks to address some basic problems and issues concerning the archaeology and prehistory of the central Solomon Islands. In particular the archaeological data from a series of excavations ad detailed field surveys conducted on the island of Guadalcanal are used to construct a framework for the culture history of this apparently aceramic region and to define a set of questions that must be addressed in future enquiries I this relatively unknown area. Chapter 1 sets out the main problems which this thesis addresses. The equivocal results from a single excavation in 1966-1968 suggested an aceramic occupation of Guadalcanal and the central Solomons at a time when, elsewhere in the group, well-documented prehistoric settlement sequences are articulated with a regional cultural tradition associated with Lapita ceramics. The major issues stem from a long-standing need to document the central Solomon Islands sequences with a view to filling a major lucana in our knowledge of the prehistory of island Melanesis. Chapters 2, 3, 4, 5 and 6 set out the data upon which the inferences and conclusions of chapter 7 are based. Chapter 2 gives a brief overview of the main aspects of Guadalcanal’s natural environment and ethnography that have a bearing on the interpretation of the archaeological evidence. The results of the site surveys in the Poha and Vura Valleys and the north-west cape area of Guadalcanal which formed the initial work in this study are discussed also. In chapter 3 the 1966-1968 excavations at the Vatuluma Posovi site are re-evaluated based upon a critical examination of the original records and the results of new work, including important new C14 dates, from excavations and surveys in 1987-1988. Additional data from a series of excavations in other caves and rockshelters, given in chapter 4, serve to extend our knowledge of the prehistoric occupations of the Poha and Vura valleys and introduce a suite of environmental evidence not available from the Vatuluma Posovi site. Chapter 5 of the thesis discussed a largely unconsidered artefact of Melanesian prehistory – the engraved rock art. The re-evaluation of the Vatuluma Posovi site allowed for the dating of this art tradition and its incorporation into discussions of cultural relationships both in Solomon Islands an the wider Melanesian sphere. In chapter 6 the geographical focus moves from the Poha and Vura valleys to the north-west cape of Guadalcanal enabling the consideration of a number of open settlement and agricultural sites, including a series of irrigated taro pond-field systems. The thesis conclusion attempts a synthesis of the data as a first step in the formulation of a prehistory for Guadalcanal. The problems of defining the Guadalcanal sequences and their incorporation into a regional framework are discussed, and suggestions for future research requirements are made.
Evolutionary Games on Isothermal Graphs
Creators: name: Allen, Benjamin
name: Lippner, Gabor
name: Nowak, Martin A.
Publisher: name: arXiv
Year: 2019
Subjects: subject: Populations and Evolution (q-bio.PE)
subject: FOS: Biological sciences
subject: 92D15

description: Population structure affects the outcome of natural selection. Static population structures can be described by graphs, where individuals occupy the nodes, and interactions occur along the edges. General conditions for evolutionary success on any weighted graph were recently derived, for weak selection, in terms of coalescence times of random walks. Here we show that for a special class of graphs, the conditions for success take a particularly simple form, in which all effects of graph structure are described by the graph's "effective degree"---a measure of the effective number of neighbors per individual. This result holds for all weighted graphs that are isothermal, meaning that the sum of edge weights is the same at each node. Isothermal graphs encompass a wide variety of underlying topologies, and arise naturally from supposing that each individual devotes the same amount of time to interaction. Cooperative behavior is favored on a large isothermal graph if the benefit-to-cost ratio exceeds the effective degree. We relate the effective degree of a graph to its spectral gap, thereby providing a link between evolutionary dynamics and the theory of expander graphs. As a surprising example, we report graphs of infinite average degree that are nonetheless highly conducive for promoting cooperation.
description: 40 pages, 6 figures
Genotype–phenotype correlation and evidence for a common ancestor in two Italian ALS patients with the D124G SOD1 mutation
Creators: name: Ricci, Claudia
name: Giannini, Fabio
name: Intini, Enrica
name: Battistini, Stefania
Publisher: name: Taylor & Francis
Year: 2019
Subjects: subject: Medicine
subject: Genetics
subject: FOS: Biological sciences
subject: 69999 Biological Sciences not elsewhere classified
subject: Cancer
subject: 60506 Virology
subject: Computational Biology

description: Objective: To describe the phenotypic and genotypic features of two unrelated Italian amyotrophic lateral sclerosis (ALS) patients, a FALS case and an apparently sporadic case, carrying the same D124G SOD1 mutation. Since this mutation is very rare, previously reported in only one patient of unknown geographical origin, to look for a founder effect. Methods: Cases were classified based on the El Escorial revised criteria. Genomic DNA was isolated from whole blood samples and the coding region of the SOD1 gene was analyzed by polymerase chain reaction (PCR) and sequencing. For the haplotype analysis, genotyping was carried out using eight polymorphic markers flanking the SOD1 gene. Results: Both patients had a spinal onset in the lower limbs and progressive muscular atrophy (PMA) phenotype. The progression of the disease in our cases differed from that reported for PMA patients, characterized by a longer survival than the majority of ALS phenotypes, being more aggressive, in particular in the sporadic case (survival less than 1 year). Genotyping showed a shared haplotype for the D124G allele and the estimate of the mutation dating revealed that the mutation originated approximately 400 years ago. Conclusions: We have defined for the first time the clinical profile associated with the D124G mutation in SOD1 gene and provided evidence that this mutation in Italy originates from a common founder.
Addressing Label Leakage in Knowledge Tracing Models
Creators: name: Badran, Yahya
name: Preisach, Christine
Publisher: name: arXiv
Year: 2024
Subjects: subject: Computers and Society (cs.CY)
subject: Artificial Intelligence (cs.AI)
subject: Machine Learning (cs.LG)
subject: FOS: Computer and information sciences

description: Knowledge Tracing (KT) is concerned with predicting students' future performance on learning items in intelligent tutoring systems. Learning items are tagged with skill labels called knowledge concepts (KCs). Many KT models expand the sequence of item-student interactions into KC-student interactions by replacing learning items with their constituting KCs. This approach addresses the issue of sparse item-student interactions and minimises the number of model parameters. However, we identified a label leakage problem with this approach. The model's ability to learn correlations between KCs belonging to the same item can result in the leakage of ground truth labels, which leads to decreased performance, particularly on datasets with a high number of KCs per item.
 In this paper, we present methods to prevent label leakage in knowledge tracing (KT) models. Our model variants that utilize these methods consistently outperform their original counterparts. This further underscores the impact of label leakage on model performance. Additionally, these methods enhance the overall performance of KT models, with one model variant surpassing all tested baselines on different benchmarks. Notably, our methods are versatile and can be applied to a wide range of KT models.
Criodion tuberculatum Gahan 1892
Creators: name: Santos-Silva, Antonio
name: Devesa, Sergio
Publisher: name: Zenodo
Year: 2021
Subjects: Biodiversity
Taxonomy
Animalia
Arthropoda
Insecta
Coleoptera
Cerambycidae
Criodion
Criodion tuberculatum

description: Criodion tuberculatum Gahan, 1892
(Fig. 6)
 Criodion tuberculatum Gahan 1892: 25.
 Although the pronotal sculpturing and shape of the elytral apex with two spines in C. tuberculatum allow easily recognizing the species, we are taking the opportunity to illustrate a syntype for the first time. Martins and Monné (2005) commented that males of C. tuberculatum were similar to those of C. rhinoceros Bates, 1870, but cannot be confused due to the mandibles without a distinct dorsal projection, which is present in C. rhinoceros, especially in large males.
 Gahan (1892) reported: “ Hab. Peru, Sarayacu; and (?) Cayenne.” According to Martins and Monné (2005) (translated): “The original localities, “ Peru, Sarayacu; and (?) Cayenne” (Gahan, 1892: 26), encloses a misunderstanding because Sarayacu is located in Ecuador, and the hitherto dubious occurrence in Cayenne was recently confirmed (Tavakilian in Hequet, 1996).” However, this information about Sarayacu is wrong. Sarayacu is placed in the region of Loreto, province of Ucayali in Peru. It is true that there is a place in Ecuador named Sarayacu in the province of Pastaza. But there is no reason to suppose that the information on the original description was a mistake. Therefore, one of the type localities is restored to Peru.
description: Published as part of Santos-Silva, Antonio & Devesa, Sergio, 2021, New synonymies and notes in Criodion Audinet-Serville (Coleoptera: Cerambycidae: Cerambycinae), pp. 1-7 in Insecta Mundi 2021 (897) on page 6, DOI: 10.5281/zenodo.5865075
Fractal ground state of ion chains in periodic potentials
Creators: name: Menu, Raphaël
name: Malo, Jorge Yago
name: Vuletić, Vladan
name: Chiofalo, Maria Luisa
name: Morigi, Giovanna
Publisher: name: arXiv
Year: 2024
Subjects: subject: Quantum Gases (cond-mat.quant-gas)
subject: Strongly Correlated Electrons (cond-mat.str-el)
subject: Quantum Physics (quant-ph)
subject: FOS: Physical sciences

description: Trapped ions in a periodic potential are a paradigm of a frustrated Wigner crystal. The dynamics is captured by a long-range Frenkel-Kontorova model. The classical ground state can be mapped to the one of an antiferromagnetic spin chain with long-range interactions in a magnetic field, whose strength is determined by the mismatch between chain's and substrate lattice's periodicity. The mapping is exact when the substrate potential is a piecewise harmonic potential and holds for any two-body interaction decaying as $1/r^α$ with the distance $r$. The ground state is a devil's staircase of regular, periodic structures as a function of the mismatch, whose range of stability depends also on the coefficient $α$. While the staircase is well defined in the thermodynamic limit for $α>1$, for Coulomb interactions, $α=1$, it disappears and the sliding-to-pinned transitions becomes crossovers. However, due to the logarithmic convergence to the thermodynamic limit characteristic of the Coulomb potential, the staircase is found for any finite number of ions. We discuss the experimental parameters as well as the features that allow one to observe and reveal our predictions in experimental platforms. These dynamics are a showcase of the versatility of trapped ion platforms for exploring the interplay between frustration and interactions.
Leptogenesis from composite singlets
Creators: name: Yoshimatsu, Nobuki
Publisher: name: arXiv
Year: 2022
Subjects: subject: High Energy Physics - Phenomenology (hep-ph)
subject: FOS: Physical sciences

description: We argue that dual singlets accommodate the thermal leptogenesis in the context of metastable supersymmetry breaking. This framework suggests that the reheating temperature is as low as O(10^4) GeV, and besides the neutrino masses, solely induced from the dual fermions, are present at O(0.1) eV. We also expect that the unstable gravitino, though long-lived, may cause a clear signal of the neutrino flux at O(10) MeV.
description: 23 pages, Appendices included
On the minimal cardinality of a subset of R which is not of first category
Creators: name: Tyszka, Apoloniusz
Publisher: name: arXiv
Year: 1999
Subjects: subject: Logic (math.LO)
subject: FOS: Mathematics
subject: 03E05 (Primary), 26A03 (Secondary)

description: Let M be the ideal of first category subsets of R and non(M)=min{card X: X \subseteq R, X \not\in M}. We consider families Φof sequences converging to \infty, with the property that for every open set U \subseteq R that is unbounded above there exists a sequence belonging to Φ, which has an infinite number of terms belonging to U. We present assumptions about Φwhich imply that the minimal cardinality of Φequals non(M).
description: 7 pages, added text about conditions C_m, to appear in J. Nat. Geom
A conjecture on the lengths of filling pairs
Creators: name: Sanki, Bidyut
name: Vadnere, Arya
Publisher: name: arXiv
Year: 2019
Subjects: subject: Geometric Topology (math.GT)
subject: General Topology (math.GN)
subject: FOS: Mathematics

description: A pair $(α, β)$ of simple closed geodesics on a closed and oriented hyperbolic surface $M_g$ of genus $g$ is called a filling pair if the complementary components of $α\cupβ$ in $M_g$ are simply connected. The length of a filling pair is defined to be the sum of their individual lengths. In \cite{Aou}, Aougab-Huang conjectured that the length of any filling pair on $M$ is at least $\frac{m_{g}}{2}$, where $m_{g}$ is the perimeter of the regular right-angled hyperbolic $\left(8g-4\right)$-gon. In this paper, we prove a generalized isoperimetric inequality for disconnected regions and we prove the Aougab-Huang conjecture as a corollary.
description: Accepted for publication in Geometriae Dedicata; 16 pages, 1 figure
Quantum simulation of entanglement and hadronization in jet production: lessons from the massive Schwinger model
Creators: name: Florio, Adrien
name: Frenklakh, David
name: Ikeda, Kazuki
name: Kharzeev, Dmitri E.
name: Korepin, Vladimir
name: Shi, Shuzhe
name: Yu, Kwangmin
Publisher: name: arXiv
Year: 2024
Subjects: subject: High Energy Physics - Phenomenology (hep-ph)
subject: High Energy Physics - Theory (hep-th)
subject: Nuclear Theory (nucl-th)
subject: Quantum Physics (quant-ph)
subject: FOS: Physical sciences

description: The possible link between entanglement and thermalization, and the dynamics of hadronization are addressed by studying the real-time response of the massive Schwinger model coupled to external sources. This setup mimics the production and fragmentation of quark jets, as the Schwinger model and QCD share the properties of confinement and chiral symmetry breaking. By using quantum simulations on classical hardware, we study the entanglement between the produced jets, and observe the growth of the corresponding entanglement entropy in time. This growth arises from the increased number of contributing eigenstates of the reduced density matrix with sufficiently large and close eigenvalues. We also investigate the physical nature of these eigenstates, and find that at early times they correspond to fermionic Fock states. We then observe the transition from these fermionic Fock states to meson-like bound states as a function of time. In other words, we observe how hadronization develops in real time. At late times, the local observables at mid-rapidity (such as the fermion density and the electric field) approach approximately constant values, suggesting the onset of equilibrium and approach to thermalization.
description: 10 pages, 12 figures
Exploring the Relationship Between Resistance Training and Resilience in Black/African American Men With Depressive Symptoms
Creators: Louie, Mark Edward
Publisher: name: Columbia University
Year: 2019
Subjects: subject: Kinesiology
subject: Psychology
subject: FOS: Psychology
subject: Mental health
subject: Resilience (Personality trait)
subject: Exercise therapy
subject: African Americans--Mental health
subject: African American men
subject: Depressed persons

description: This dissertation was a sub-study of a National Institutes of Health (NIH)-funded randomized clinical trial (R21 NR016112) that examined the effects of resistance training (RT; i.e., weight lifting) on depression in Black/African American (AA) men. The focus of this study was to examine resilience in that population. Resilience is one’s ability to adapt, withstand, and grow in the face of adversity and stress, and it is thought to be inversely associated with stress-related mental illness. Previous research has linked resilience with other intrapersonal factors such as physical self-concept (PSC), and mastery experiences, yet no study has examined the role exercise might play in these relationships. Purpose: To conduct the first study to examine the effects of RT on resilience and PSC, and to explore how mastery experiences might affect these variables. Methods: Twenty-nine participants in the parent study were randomized into either a 12-week RT group or time-matched control. Both groups were required to attend two on-site sessions per week (i.e., 24 total sessions), and all completed questionnaires at three time points (baseline, week 6, week 13). Changes in resilience, PSC, and mastery were analyzed using a series of linear mixed models. Results: There was a significant effect of Time (t = 2.3, p = .02) for resilience, such that the mean score significantly increased by 2.9 points from baseline to the Week 13 in the aggregated sample. There was no significant effect of Group; however, the resistance training group significantly increased their resilience from baseline to Week 13 (p < .01). There was a significant effect of Group (t = 2.5, p = .02) and Time (t= 2.4, p < .01) on PSC from baseline to Week 13. In addition, the results revealed that for every 1-unit increase in PSC from baseline to Week 13, there was a 0.1-point increase in resilience for the aggregated sample. Mastery was not related to any outcome. Conclusion: Results suggest that RT has the potential to influence both resilience and PSC. Furthermore, changes in PSC appeared to be associated with changes in resilience. Future research will be needed to better understand these associations.
Life as a Resonance Engine_ The Coherent Structure Beneath Biology
Creators: name: Bostick, Devin
Publisher: name: Zenodo
Year: 2025
Subjects: subject: Theoretical Biology
subject: Biophysics
subject: Systems Biology
subject: Complex Systems
subject: Nonlinear Dynamics
subject: Cognitive neuroscience
subject: Philosophy of Biology
subject: Artificial intelligence
subject: Mathematical Biology
subject: Interdisciplinary Physics

description: Main CODES Framework

Abstract 

This paper redefines life not as a statistical fluke, biochemical mechanism, or genetic optimization algorithm, but as an emergent coherence structure governed by phase-locked resonance. In this reframing, biology is not an exception to physics—it is its most sophisticated recursive expression.

Within the CODES framework (Chirality of Dynamic Emergent Systems), life is defined by the sustained self-organization of chiral phase structures across nested temporal and spatial scales. DNA is no longer a molecule with probabilistic mutations—it is a spiral waveform optimized for field storage and retrieval, functioning as a waveguide for bio-resonance. Genes encode not just information but temporal phase instructions for maintaining coherence across cellular systems.

Cell division, morphogenesis, and neural signaling are modeled not as stochastic sequences of events, but as high-fidelity entrainment operations—phase-locking cascades coordinated across electromagnetic, biochemical, and gravitational fields. Memory, in this model, becomes recursive breathwork of coherence fields, not synaptic storage. Emotion becomes resonant field modulation, not chemical imbalance.

Evolution itself ceases to be a random walk of genetic drift and natural selection. Instead, it is reconceived as a harmonic recursion process, where life phase-locks more deeply into the structural resonance of its environment. Mutation is not error—it is chirality modulation under stress. Adaptation is not survival—it is phase re-locking into new coherence windows.

CODES thus collapses the entire edifice of probability-based biology into a prime-anchored coherence lattice, where structured resonance—not randomness—drives development, adaptation, and sentience. Biology is no longer machinery. It is no longer accident. It is no longer blind.

It is a symphony:

Of chiral rhythms woven across tissues.

Of wave-coupled intelligence scaling from cell to organism.

Of field coherence sculpting form, function, and meaning.

This paper presents the theoretical model, empirical validation paths, and simulation architecture for a fully resonant biology—and introduces a post-probability foundation for medicine, neuroscience, genetics, and ecological design.
Micromentignatha Sumlin 1981
Creators: name: Wiesner, Jürgen
Publisher: name: Zenodo
Year: 2021
Subjects: Biodiversity
Taxonomy
Animalia
Arthropoda
Insecta
Coleoptera
Carabidae
Micromentignatha

description: Key to the members of the genus Micromentignatha
 1. Elytra with yellow subhumeral dot; body size> 7.5 mm............  M. geberti Wiesner, new species
 — Elytra missing subhumeral dot, size ≤ 7.5 mm............................................... 2
 2(1). Labrum with marginal teeth well developed and separated by deep, wide notches................. 4
 — Marginal teeth of labrum not well developed................................................ 3
 3(2). Legs testaceous................................................  M. leai demarzi (Mandl, 1960)
 — Legs pigmented....................................................  M. leai leai (Sloane, 1905)
 4(2) Body size ≤ 5.5 mm............................................  M. minutissima (Mandl, 1967)
 — Body size>5.5 mm...........................................  M. oblongicollis (Macleay, 1888)
description: Published as part of Wiesner, Jürgen, 2021, Micromentignatha geberti, a new tiger beetle species from Australia (Coleoptera: Cicindelidae), pp. 1-5 in Insecta Mundi 2021 (898) on page 2, DOI: 10.5281/zenodo.5865112
Sign choices for orientifolds
Creators: name: Hekmati, Pedram
name: Murray, Michael K.
name: Szabo, Richard J.
name: Vozzo, Raymond F.
Publisher: name: arXiv
Year: 2019
Subjects: subject: High Energy Physics - Theory (hep-th)
subject: Mathematical Physics (math-ph)
subject: Differential Geometry (math.DG)
subject: K-Theory and Homology (math.KT)
subject: FOS: Physical sciences
subject: FOS: Mathematics

description: We analyse the problem of assigning sign choices to O-planes in orientifolds of type II string theory. We show that there exists a sequence of invariant $p$-gerbes with $p\geq-1$, which give rise to sign choices and are related by coboundary maps. We prove that the sign choice homomorphisms stabilise with the dimension of the orientifold and we derive topological constraints on the possible sign configurations. Concrete calculations for spherical and toroidal orientifolds are carried out, and in particular we exhibit a four-dimensional orientifold where not every sign choice is geometrically attainable. We elucidate how the $K$-theory groups associated with invariant $p$-gerbes for $p=-1,0,1$ interact with the coboundary maps. This allows us to interpret a notion of $K$-theory due to Gao and Hori as a special case of twisted $KR$-theory, which consequently implies the homotopy invariance and Fredholm module description of their construction.
description: 29 pages; v2: minor corrections and comments added; Final version to appear in Communications in Mathematical Physics
Axially Symmetric Bianchi I Yang-Mills Cosmology as a Dynamical System
Creators: name: Darian, B. K.
name: Kunzle, H. P.
Publisher: name: arXiv
Year: 1996
Subjects: subject: General Relativity and Quantum Cosmology (gr-qc)
subject: Chaotic Dynamics (nlin.CD)
subject: FOS: Physical sciences

description: We construct the most general form of axially symmetric SU(2)-Yang-Mills fields in Bianchi cosmologies. The dynamical evolution of axially symmetric YM fields in Bianchi I model is compared with the dynamical evolution of the electromagnetic field in Bianchi I and the fully isotropic YM field in Friedmann-Robertson-Walker cosmologies. The stochastic properties of axially symmetric Bianchi I-Einstein-Yang-Mills systems are compared with those of axially symmetric YM fields in flat space. After numerical computation of Liapunov exponents in synchronous (cosmological) time, it is shown that the Bianchi I-EYM system has milder stochastic properties than the corresponding flat YM system. The Liapunov exponent is non-vanishing in conformal time.
description: 18 pages, 6 Postscript figures, uses amsmath,amssymb,epsfig,verbatim, to appear in CQG