cometadata/datacite-rtg-text-other-reclassification-records huggingface dataset:
Vermicompost a sustainable bio-stimulant and control for agricultural enhancement in Africa.
Creators: name: Alabi, David Olusoji
name: Coopoosamy, Roger
name: Naidoo, Kuben
name: Georgina, Arthur
Publisher: name: Mangosuthu University of Technology (MUT)
Year: 2023
Subjects: Agricultural biotechnology diagnostics (incl. biosensors)
Agricultural biotechnology not elsewhere classified

description: Agricultural productivity is characterized by soil, landform and climate change. Only 3% of the soil is fertile in South Africa which necessitates the need for improvement in agricultural practices. Several agricultural practices involve cropping systems, conventional ploughing, and hillside farming which tend to threaten the ecosystem due to frequent cropping, erosion, and leaching. Nutrients are frequently depleted from the soil, organic matter content is depleted, and the activities of microbes are hindered. A valuable biotechnological technique produced through a process called vermicomposting was discovered to improve soil characteristics. It involves combining various agricultural wastes, ranging from plant residue to animal droppings, to produce a harmless and odourless substance. This was found useful because composting waste with worms reduces greenhouse gas emissions. This product helps to control a wide range of pests and diseases of plants. In addition, the activities of invasive plants are suppressed which helps to restore nutrients into the soil. Vermicompost is efficient at stimulating germination, plant growth, and significantly increasing crop yield.
On admissible memory kernels for random unitary qubit evolution
Creators: name: Wudarski, Filip A.
name: Należyty, Paweł
name: Sarbicki, Gniewomir
name: Chruściński, Dariusz
Publisher: name: arXiv
Year: 2015
Subjects: subject: Quantum Physics (quant-ph)
subject: FOS: Physical sciences

description: We analyze random unitary evolution of the qubit within memory kernel approach. We provide sufficient conditions which guarantee that the corresponding memory kernel generates physically legitimate quantum evolution. Interestingly, we are able to recover several well known examples and generate new classes of nontrivial qubit evolution. Surprisingly, it turns out that quantum evolution with memory kernel generated by our approach gives rise to vanishing non-Markovianity measure based on the distinguishability of quantum states.
Estimating Bayes factors from minimal summary statistics in repeated measures analysis of variance designs
Creators: name: Faulkenberry, Thomas J.
Publisher: name: arXiv
Year: 2019
Subjects: subject: Methodology (stat.ME)
subject: Computation (stat.CO)
subject: FOS: Computer and information sciences

description: In this paper, I develop a formula for estimating Bayes factors directly from minimal summary statistics produced in repeated measures analysis of variance designs. The formula, which requires knowing only the $F$-statistic, the number of subjects, and the number of repeated measurements per subject, is based on the BIC approximation of the Bayes factor, a common default method for Bayesian computation with linear models. In addition to providing computational examples, I report a simulation study in which I demonstrate that the formula compares favorably to a recently developed, more complex method that accounts for correlation between repeated measurements. The minimal BIC method provides a simple way for researchers to estimate Bayes factors from a minimal set of summary statistics, giving users a powerful index for estimating the evidential value of not only their own data, but also the data reported in published studies.
A Strictly Single-Site DMRG Algorithm with Subspace Expansion
Creators: name: Hubig, Claudius
name: McCulloch, Ian P.
name: Schollwöck, Ulrich
name: Wolf, F. Alexander
Publisher: name: arXiv
Year: 2015
Subjects: subject: Strongly Correlated Electrons (cond-mat.str-el)
subject: FOS: Physical sciences

description: We introduce a strictly single-site DMRG algorithm based on the subspace expansion of the Alternating Minimal Energy (AMEn) method. The proposed new MPS basis enrichment method is sufficient to avoid local minima during the optimisation, similarly to the density matrix perturbation method, but computationally cheaper. Each application of $\hat H$ to $|Ψ\rangle$ in the central eigensolver is reduced in cost for a speed-up of $\approx (d + 1)/2$, with $d$ the physical site dimension. Further speed-ups result from cheaper auxiliary calculations and an often greatly improved convergence behaviour. Runtime to convergence improves by up to a factor of 2.5 on the Fermi-Hubbard model compared to the previous single-site method and by up to a factor of 3.9 compared to two-site DMRG. The method is compatible with real-space parallelisation and non-abelian symmetries.
description: 9 pages, 6 figures; added comparison with two-site DMRG
Recumbent handbike set-up for sports performance
Creators: name: Stone, Ben
Publisher: name: Loughborough University
Year: 2019
Subjects: subject: 119999 Medical and Health Sciences not elsewhere classified
subject: FOS: Other medical sciences

description: Handcycling has become a popular recreational and sporting exercise modality for individuals with lower limb impairments. Literature has focussed on attachable-unit and touring handbikes as a form of mobility and recreation. Conversely, recumbent handcycling is an endurance sport, where athletes compete in time trial (TT) and road race disciplines lasting 20 to 140 minutes. Therefore, despite 20 years of handcycling research, very little is known about recumbent handbike configuration, physiology or biomechanics, which is critical for the development of sports performance. [Continues.]
On pro-$p$ groups with quadratic cohomology
Creators: name: Quadrelli, Claudio
name: Snopce, Ilir
name: Vannacci, Matteo
Publisher: name: arXiv
Year: 2019
Subjects: subject: Group Theory (math.GR)
subject: Number Theory (math.NT)
subject: FOS: Mathematics
subject: 12G05, 20E18, 17A45, 20J06, 20E06, 22E20

description: The main purpose of this article is to study pro-$p$ groups with quadratic $\mathbb{F}_p$-cohomology algebra, i.e. $H^\bullet$-quadratic pro-$p$ groups. Prime examples of such groups are the maximal Galois pro-$p$ groups of fields containing a primitive root of unity of order $p$. We show that the amalgamated free product and HNN-extension of $H^\bullet$-quadratic pro-$p$ groups is $H^\bullet$-quadratic, under certain necessary conditions. Moreover, we introduce and investigate a new family of pro-$p$ groups that yields many new examples of $H^\bullet$-quadratic groups: $p$-RAAGs. These examples generalise right angled Artin groups in the category of pro-$p$ groups. Finally, we explore "Tits alternative behaviour" of $H^\bullet$-quadratic pro-$p$ groups.
description: 40 pages
title: Contested freedoms : British images of Sierra Leone, 1780-1850.
Creators: name: Downing, Andrea.
Publisher: name: University of Liverpool Repository
Year: 2023

description: The colony of Sierra Leone, between 1780 and 1850, was a unique practical expression of British antislavery culture and ideology. This thesis reflects on how leading abolitionists imagined this part of West Africa and what they intended to achieve there. The approach is multi-disciplinary and draws on recent theoretical developments to investigate the creation and maintenance of hegemonic images of Sierra Leone and its inhabitants during the colony's early years. The thesis points to Manichean differences of interpretation which underlay images of Sierra Leone's native inhabitants, its black settler and liberated African populations and the abolitionists who supported them. It also reflects widely on images of Africa's physical environment. Throughout, the emphasis is on the struggles for representational dominance which took place not only between antislavery supporters and their opponents but within antislavery culture itself. Much of that struggle centred around early utopian images of the colony. Sierra Leone was a child of modernity at arguably its most optimistic and eloquent phase. It was seen as a place where enlightenment ideologies regarding rights and progress could be practically enacted. The utopian discourse persisted in spite of the colony's apparent commercial failure. However, images of the colony's black inhabitants became increasingly negative. This thesis suggests that humanitarians (in seeking to explain the difficulties they encountered in Sierra Leone) frequently appropriated the hostile images of blacks which had been promoted by their pros lavery opponents. Part Three of this study comprises an examination of travel writing about Sierra Leone. This section builds on recent theoretical advances in our understanding of the importance of travel writing as a cultural signifier. It insists that travel writing (as a promoter of images) is more than just a record of individual journeys and lightweight observations. In particular the thesis examines the role of travellers in perpetuating racist myths about 'other' cultures despite the use of narrative techniques which assert the travellers' vulnerability and innocence. The thesis also reveals how travellers studied and reported land and people within an imperial discursive frame that ultimately sought to appropriate and exploit them.
Effective gravitational mass of the Ayón-Beato and Garc\'ıa metric
Creators: name: Sinha, A. K.
name: Pandey, G. K.
name: Bhaskar, A. K.
name: Rai, B. C.
name: Jha, A. K.
name: Kumar, S.
name: Xulu, S. S.
Publisher: name: arXiv
Year: 2015
Subjects: subject: General Relativity and Quantum Cosmology (gr-qc)
subject: FOS: Physical sciences

description: In this paper, we calculate the effective gravitational mass of Ayón-Beato and Garc\'ıa regular (non-singular) static spherically symmetric asymptotically Minkowskian metric that is a solution to Einstein's equations coupled with a nonlinear electromagnetic field. The effective gravitational mass is negative, zero, or positive that depends on the ratio of magnitude of electric charge to the ADM mass and the ratio of the radial distance to the ADM mass. As expected, at large value of radial distance, our result gives effective gravitational mass of the Reissner-Nordström metric.
description: Accepted for publication in Modern Physics Letters A
Machine Learning on EPEX Order Books: Insights and Forecasts
Creators: name: Schnürch, Simon
name: Wagner, Andreas
Publisher: name: arXiv
Year: 2019
Subjects: subject: Applications (stat.AP)
subject: Statistical Finance (q-fin.ST)
subject: Machine Learning (stat.ML)
subject: FOS: Computer and information sciences
subject: FOS: Economics and business

description: This paper employs machine learning algorithms to forecast German electricity spot market prices. The forecasts utilize in particular bid and ask order book data from the spot market but also fundamental market data like renewable infeed and expected demand. Appropriate feature extraction for the order book data is developed. Using cross-validation to optimise hyperparameters, neural networks and random forests are proposed and compared to statistical reference models. The machine learning models outperform traditional approaches.
description: 14 pages, 5 figures
Transformation of organic micropollutants along hyporheic flow in bedforms of river-simulating flumes
Creators: name: Jaeger, Anna
name: Posselt, Malte
name: Schaper, Jonas
name: Betterle, Andrea
name: Rutere, Cyrus
name: Coll, Claudia
name: Mechelke, Jonas
name: Raza, Muhammad
name: Meinikmann, Karin
name: Portmann, Andrea
name: Blaen, Phillip
name: Horn, Marcus A.
name: Krause, Stefan
name: Lewandowski, Jörg
Publisher: name: Humboldt-Universität zu Berlin
Year: 2021
Subjects: subject: Biogeochemistry
subject: Environmental sciences
subject: Hydrology
subject: 550 Geowissenschaften

description: Urban streams receive increasing loads of organic micropollutants from treated wastewaters. A comprehensive understanding of the in-stream fate of micropollutants is thus of high interest for water quality management. Bedforms induce pumping effects considerably contributing to whole stream hyporheic exchange and are hotspots of biogeochemical turnover processes. However, little is known about the transformation of micropollutants in such structures. In the present study, we set up recirculating flumes to examine the transformation of a set of micropollutants along single flowpaths in two triangular bedforms. We sampled porewater from four locations in the bedforms over 78 days and analysed the resulting concentration curves using the results of a hydrodynamic model in combination with a reactive transport model accounting for advection, dispersion, first-order removal and retardation. The four porewater sampling locations were positioned on individual flowpaths with median solute travel times ranging from 11.5 to 43.3 h as shown in a hydrodynamic model previously. Highest stability was estimated for hydrochlorothiazide on all flowpaths. Lowest detectable half-lives were estimated for sotalol (0.7 h) and sitagliptin (0.2 h) along the shortest flowpath. Also, venlafaxine, acesulfame, bezafibrate, irbesartan, valsartan, ibuprofen and naproxen displayed lower half-lives at shorter flowpaths in the first bedform. However, the behavior of many compounds in the second bedform deviated from expectations, where particularly transformation products, e.g. valsartan acid, showed high concentrations. Flowpath-specific behavior as observed for metformin or flume-specific behavior as observed for metoprolol acid, for instance, was attributed to potential small-scale or flume-scale heterogeneity of microbial community compositions, respectively. The results of the study indicate that the shallow hyporheic flow field and the small-scale heterogeneity of the microbial community are major controlling factors for the transformation of relevant micropollutants in river sediments.
Constraints on anisotropic RG flows from holographic entanglement entropy
Creators: name: Ghasemi, Mostafa
name: Parvizi, Shahrokh
Publisher: name: arXiv
Year: 2019
Subjects: subject: High Energy Physics - Theory (hep-th)
subject: FOS: Physical sciences

description: In the context of the gauge/gravity duality, using the proposed candidate $c$-function, which is derived from the entanglement entropy of a strip-shaped region, we investigate the RG flow for $d+1$-dimensional quantum field theories with broken Lorentz and rotational symmetries in the IR, but preserved conformal invariance in the UV boundary. We examine conditions of monotonicity of the $c$-function for holographic anisotropic theories dual to the Einstein gravity via the constraints imposed by the null energy conditions. We consider near UV and IR behaviors and identify the sufficient conditions that guarantee the $c$ function decreases monotonically along the RG flows.
description: 18 pages, 4 figs. v2: 25 pages, improved version, refs added. v3: 28 pages, published version
Bell inequality tests using asymmetric entangled coherent states in asymmetric lossy environments
Creators: name: Park, Chae-Yeun
name: Jeong, Hyunseok
Publisher: name: arXiv
Year: 2015
Subjects: subject: Quantum Physics (quant-ph)
subject: FOS: Physical sciences

description: We study an asymmetric form of two-mode entangled coherent state (ECS), where the two local amplitudes have different values, for testing the Bell-Clauser-Horne-Shimony-Holt (Bell-CHSH) inequality. We find that the asymmetric ECSs have obvious advantages over the symmetric form of ECSs in testing the Bell-CHSH inequality. We further study an asymmetric strategy in distributing an ECS over a lossy environment and find that such a scheme can significantly increase violation of the inequality.
description: 11 pages, 11 figures, minor revisions, to be published in Phys. Rev. A
title: A study of low-income households and their perceptions of environmental problems during rapid urbanisation in Hanoi, Vietnam.
Creators: name: Louise. Kilgour, Andrea
Publisher: name: University of Liverpool Repository
Year: 2023

description: The thesis examines the living conditions of low-income households in Hanoi during a period of economic, social and political change. The aims are viewed in the context of rapid urbanisation. The study further considers how factors associated with low-income have affected the perceptions of respondents in regards to their domestic environments and to the environment at varying spatial levels. These perceptions are then compared to the contributions made by the State, non-governmental organisations and international donors to reveal that although information exists this rarely reaches those in low-income neighbourhoods. A number of research methods revealed that an econometric approach alone does not reveal the true characteristics or diversity of living conditions in the areas studied. Conditions varied within and between study areas highlighting the multi-dimensional nature of poverty and how, while lack of income can contribute to lack of environmental conditions, it is not the only factor. Education, political affiliation and age in particular are of crucial importance in explaining living conditions and attitudes to the environment. As a result the thesis contributes to the growing literature on sustainable urbanisation and illustrates the importance of adopting holistic and participatory approaches. By focusing on Vietnam during the 1990s, this thesis has revealed the importance of considering macro-level economic and political structures in the development of theory and policy during processes of transition.
Twisted Gauge Fields
Creators: name: François, Jordan
Publisher: name: arXiv
Year: 2019
Subjects: subject: Mathematical Physics (math-ph)
subject: FOS: Physical sciences

description: We propose a generalisation of the notion of associated bundles to a principal bundle constructed via group action cocycles rather than via mere representations of the structure group. We devise a notion of connection generalising Ehresmann connection on principal bundles, giving rise to the appropriate covariant derivative on sections of these twisted associated bundles (and on twisted tensorial forms). We study the action of the group of vertical automorphisms on the objects introduced (active gauge transformations). We also provide the gluing properties of the local representatives (passive gauge transformations). The latter are generalised gauge fields: They satisfy the gauge principle of physics, but are of a different geometric nature than standard Yang-Mills fields. We also examine the conditions under which this new geometry coexists and mixes with the standard one. We show that (standard) conformal tractors and Penrose's twistors can be seen as simple instances of this general picture. We also indicate that the twisted geometry arises naturally in the definition and study of anomalies in quantum gauge field theory.
description: 33 pages
Additional file 7 of Effective methods for bulk RNA-seq deconvolution using scnRNA-seq transcriptomes
Creators: name: Cobos, Francisco Avila
name: Panah, Mohammad Javad Najaf
name: Epps, Jessica
name: Long, Xiaochen
name: Man, Tsz-Kwong
name: Chiu, Hua-Sheng
name: Chomsky, Elad
name: Kiner, Evgeny
name: Krueger, Michael J.
name: di Bernardo, Diego
name: Voloch, Luis
name: Molenaar, Jan
name: van Hooff, Sander R.
name: Westermann, Frank
name: Jansky, Selina
name: Redell, Michele L.
name: Mestdagh, Pieter
name: Sumazin, Pavel
Publisher: name: figshare
Year: 2023
Subjects: subject: Genetics
subject: FOS: Biological sciences

description: Additional file 7: Review history.
title: Psychologically derived non-epileptic attack disorder (PNEAD) : psychosocial influences and psychosocial effects.
Creators: name: M. Al Marzooqi, Suad
Publisher: name: University of Liverpool Repository
Year: 2023

description: Some of the most pressing problems of health care involve the presentation of physical pathology in the absence of physical disease. Psychogenic non-epileptic attack disorder (PNEAD) accounts for a small but significant proportion of referrals to neurologists. Management of this condition is difficult because little is known about what factors are important in understanding its development and maintenance. Mismanagement of PNEAD can result in inappropriate use of anti-epileptic drugs and neglect of psychological needs. This thesis contains 3 studies. Study 1 examined the psychosocial factors that are important in understanding the development and maintenance of PNEAD. Assessments included childhood and adulthood abuse, anxiety and depression, somatisation, parental overprotection, hypochondriacal concerns and family dysfunction. One hundred and sixty two patients took part in this study matched for age and sex between PNEAD and epilepsy groups. PNEAD patients recalled more childhood and adulthood abuse than epilepsy patients and were more emotionally distressed. Findings from this study suggest that abuse and family of origin are involved in the development ofPNEAD. In study 2, 30 patients with PNEAD were matched by age and gender with an epilepsy control group. They completed questionnaires at the time of diagnosis and 3 months later measuring impact of condition, illness and symptom beliefs, family and psychosocial functioning, and satisfaction with consultation. This study compared PNEAD and epilepsy patients' reaction to the diagnosis of their condition.Before diagnosis there were few significant differences between PNEAD and epilepsy patients. After diagnosis significant differences emerged between the two groups. The diagnosis of PNEAD patients, compared with epilepsy patients, was associated with a greater negative psychological impact. Such findings may reflect for PNEAD patients the fact that they are not provided with an adequate explanation for their symptoms and behaviour. In study 3, 194 patients were matched between PNEAD and epilepsy groups by age and gender. They had been diagnosed 12-36 months previously. This study examined factors that may contribute to differences in impact of PNEAD vs epilepsy by measuring family and psychosocial function, beliefs regarding illness, clinical characteristics of attacks and satisfaction with the consultation process. Impact of the condition was greater for PNEAD than epilepsy patients. Factors that helped to explain such differences included the perceived psychological and physical impairment.
Boundary N=2 Theory, Floer Homologies, Affine Algebras, and the Verlinde Formula
Creators: name: Ashwinkumar, Meer
name: Png, Kee-Seng
name: Tan, Meng-Chwan
Publisher: name: arXiv
Year: 2019
Subjects: subject: High Energy Physics - Theory (hep-th)
subject: Differential Geometry (math.DG)
subject: Geometric Topology (math.GT)
subject: Quantum Algebra (math.QA)
subject: Symplectic Geometry (math.SG)
subject: FOS: Physical sciences
subject: FOS: Mathematics

description: Generalizing our ideas in [arXiv:1006.3313], we explain how topologically-twisted N=2 gauge theory on a four-manifold with boundary, will allow us to furnish purely physical proofs of (i) the Atiyah-Floer conjecture, (ii) Munoz's theorem relating quantum and instanton Floer cohomology, (iii) their monopole counterparts, and (iv) their higher rank generalizations. In the case where the boundary is a Seifert manifold, one can also relate its instanton Floer homology to modules of an affine algebra via a 2d A-model with target the based loop group. As an offshoot, we will be able to demonstrate an action of the affine algebra on the quantum cohomology of the moduli space of flat connections on a Riemann surface, as well as derive the Verlinde formula.
description: 44 pp. Typos corrected. To appear in ATMP
The current density in quantum electrodynamics in external potentials
Creators: name: Schlemmer, Jan
name: Zahn, Jochen
Publisher: name: arXiv
Year: 2015
Subjects: subject: High Energy Physics - Theory (hep-th)
subject: High Energy Physics - Phenomenology (hep-ph)
subject: Quantum Physics (quant-ph)
subject: FOS: Physical sciences

description: We review different definitions of the current density for quantized fermions in the presence of an external electromagnetic field. Several deficiencies in the popular prescription due to Schwinger and the mode sum formula for static external potentials are pointed out. We argue that Dirac's method, which is the analog of the Hadamard point-splitting employed in quantum field theory in curved space-times, is conceptually the most satisfactory. As a concrete example, we discuss vacuum polarization and the stress-energy tensor for massless fermions in 1+1 dimension. Also a general formula for the vacuum polarization in static external potentials in 3+1 dimensions is derived.
description: 24 pages, 1 figure; v2: final version
Unifying Lattice Models, Links and Quantum Geometric Langlands via Branes in String Theory
Creators: name: Ashwinkumar, Meer
name: Tan, Meng-Chwan
Publisher: name: arXiv
Year: 2019
Subjects: subject: High Energy Physics - Theory (hep-th)
subject: Statistical Mechanics (cond-mat.stat-mech)
subject: Geometric Topology (math.GT)
subject: Quantum Algebra (math.QA)
subject: Representation Theory (math.RT)
subject: FOS: Physical sciences
subject: FOS: Mathematics

description: We explain how, starting with a stack of D4-branes ending on an NS5-brane in type IIA string theory, one can, via T-duality and the topological-holomorphic nature of the relevant worldvolume theories, relate (i) the lattice models realized by Costello's 4d Chern-Simons theory, (ii) links in 3d analytically-continued Chern-Simons theory, (iii) the quantum geometric Langlands correspondence realized by Kapustin-Witten using 4d N = 4 gauge theory and its quantum group modification, and (iv) the Gaitsgory-Lurie conjecture relating quantum groups/affine Kac-Moody algebras to Whittaker D-modules/W-algebras. This furnishes, purely physically via branes in string theory, a novel bridge between the mathematics of integrable systems, geometric topology, geometric representation theory, and quantum algebras.
description: 31 pages. Minor improvements, typos corrected, and reference added
Diagrammatic Construction of Representations of Small Quantum $\mathfrak{sl}_2$
Creators: name: Blanchet, Christian
name: De Renzi, Marco
name: Murakami, Jun
Publisher: name: arXiv
Year: 2019
Subjects: subject: Quantum Algebra (math.QA)
subject: FOS: Mathematics

description: We provide a combinatorial description of the monoidal category generated by the fundamental representation of the small quantum group of $\mathfrak{sl}_2$ at a root of unity $q$ of odd order. Our approach is diagrammatic, and it relies on an extension of the Temperley-Lieb category specialized at $δ= -q-q^{-1}$.
description: 37 pages, proofs and references expanded in version 3
A note on connected cofiltered coalgebras, conilpotent coalgebras and Hopf algebras
Creators: name: Gao, Xing
name: Guo, Li
Publisher: name: arXiv
Year: 2019
Subjects: subject: Rings and Algebras (math.RA)
subject: Quantum Algebra (math.QA)
subject: FOS: Mathematics
subject: 16T10, 16T05, 16W99

description: This notes gives a proof that a connected coaugmented cofiltered coalgebra is a conilpotent coalgebra and thus a connected coaugmented cofiltered bialgebra is a Hopf algebra. This applies in particular to a connected coaugmented cograded coalgebra and a connected coaugmented cograded bialgebra.
description: 8 pages
On the Computational Complexity of Multi-Agent Pathfinding on Directed Graphs
Creators: name: Nebel, Bernhard
Publisher: name: arXiv
Year: 2019
Subjects: subject: Artificial Intelligence (cs.AI)
subject: Computational Complexity (cs.CC)
subject: FOS: Computer and information sciences
subject: I.2.8

description: The determination of the computational complexity of multi-agent pathfinding on directed graphs has been an open problem for many years. For undirected graphs, solvability can be decided in polynomial time, as has been shown already in the eighties. Further, recently it has been shown that a special case on directed graphs is solvable in polynomial time. In this paper, we show that the problem is NP-hard in the general case. In addition, some upper bounds are proven.
Additional file 1 of Functional connectivity analysis on electroencephalography signals reveals potential biomarkers for treatment response in major depression
Creators: name: Huang, Shiau-Shian
name: Yu, Yu-Hsiang
name: Chen, His-Han
name: Hung, Chia-Chun
name: Wang, Yao-Ting
name: Chang, Chieh Hsin
name: Peng, Syu-Jyun
name: Kuo, Po-Hsiu
Publisher: name: figshare
Year: 2023
Subjects: subject: Biochemistry
subject: Space Science
subject: Medicine
subject: Cell Biology
subject: Molecular Biology
subject: Neuroscience
subject: Physiology
subject: FOS: Biological sciences
subject: Pharmacology
subject: Biological Sciences not elsewhere classified
subject: Cancer
subject: Mental Health

description: Supplementary Material 1
3-Dimensional TQFTs From Non-Semisimple Modular Categories
Creators: name: De Renzi, Marco
name: Gainutdinov, Azat M.
name: Geer, Nathan
name: Patureau-Mirand, Bertrand
name: Runkel, Ingo
Publisher: name: arXiv
Year: 2019
Subjects: subject: Geometric Topology (math.GT)
subject: High Energy Physics - Theory (hep-th)
subject: Quantum Algebra (math.QA)
subject: FOS: Mathematics
subject: FOS: Physical sciences

description: We use modified traces to renormalize Lyubashenko's closed 3-manifold invariants coming from twist non-degenerate finite unimodular ribbon categories. Our construction produces new topological invariants which we upgrade to 2+1-TQFTs under the additional assumption of factorizability. The resulting functors provide monoidal extensions of Lyubashenko's mapping class group representations, as discussed in arXiv:2010.14852. This general framework encompasses important examples of non-semisimple modular categories coming from the representation theory of quasi-Hopf algebras, which were left out of previous non-semisimple TQFT constructions.
description: 49 pages; v3: added pictures and references
title: Oscillations in systems of impulsive nonlinear partial differential equations with distributed deviating arguments
Creators: name: Bortolan, M. C.
name: Chatzarakis, G. E.
name: Kalaimani, T.
name: Raja, T.
name: Sadhasivam, V.
Publisher: name: Publishing House of Poznan University of Technology
Year: 2019

description: Fasciculi Mathematici, 62, 13-33
Mather invariant, distortion, and conjugates for diffeomorphisms of the interval
Creators: name: Eynard-Bontemps, Hélène
name: Navas, Andrés
Publisher: name: arXiv
Year: 2019
Subjects: subject: Dynamical Systems (math.DS)
subject: Functional Analysis (math.FA)
subject: Group Theory (math.GR)
subject: FOS: Mathematics

description: We relate the Mather invariant of diffeomorphisms of the (closed) interval to their asymptotic distortion. For maps with only parabolic fixed points, we show that the former is trivial if and only if the latter vanishes. As a consequence, we obtain that such a diffeomorphism of the interval with no fixed point in the interior contains the identity in the closure of its C^{1+bv} conjugacy class if and only if it is the time-1 map of a C^1 vector field. A corollary of this is that diffeomorphisms that do not arise from vector fields are undistorted in the whole group of interval interval diffeomorphisms. Several related results in other regularity classes are obtained, and many open questions are addressed.
description: 60 pages, 2 pictures
Additional file 1 of Contradictions hindering the provision of mental healthcare and psychosocial services to women experiencing homelessness in Addis Ababa, Ethiopia: service providers’ and programme coordinators’ experiences and perspectives
Creators: name: Yohannes, Kalkidan
name: Berhane, Yemane
name: Bradby, Hannah
name: Herzig van Wees, Sibylle
name: Målqvist, Mats
Publisher: name: figshare
Year: 2023
Subjects: subject: Biotechnology
subject: Sociology
subject: FOS: Sociology
subject: Biological Sciences not elsewhere classified
subject: Mental Health

description: Supplementary Material 1
Presentation at Rossio Infraestructure - Coordination Meeting (June 2022)
Creators: name: Rossio Infrastructure
Publisher: name: Zenodo
Year: 2022

description: Coordination Meeting with the Faculty Directory and Sub-directory, and Directors of Research Units of NOVA FCSH, (presential), 30 june 2022, NOVA FCSH, for presentation of the final version of the ROSSIO Portal, and preparation of its public launch.
High-parallelism Inception-like Spiking Neural Networks for Unsupervised Feature Learning
Creators: name: Meng, Mingyuan
name: Yang, Xingyu
name: Bi, Lei
name: Kim, Jinman
name: Xiao, Shanlin
name: Yu, Zhiyi
Publisher: name: arXiv
Year: 2020
Subjects: subject: Neural and Evolutionary Computing (cs.NE)
subject: Machine Learning (cs.LG)
subject: Neurons and Cognition (q-bio.NC)
subject: Machine Learning (stat.ML)
subject: FOS: Computer and information sciences
subject: FOS: Biological sciences

description: Spiking Neural Networks (SNNs) are brain-inspired, event-driven machine learning algorithms that have been widely recognized in producing ultra-high-energy-efficient hardware. Among existing SNNs, unsupervised SNNs based on synaptic plasticity, especially Spike-Timing-Dependent Plasticity (STDP), are considered to have great potential in imitating the learning process of the biological brain. Nevertheless, the existing STDP-based SNNs have limitations in constrained learning capability and/or slow learning speed. Most STDP-based SNNs adopted a slow-learning Fully-Connected (FC) architecture and used a sub-optimal vote-based scheme for spike decoding. In this paper, we overcome these limitations with: 1) a design of high-parallelism network architecture, inspired by the Inception module in Artificial Neural Networks (ANNs); 2) use of a Vote-for-All (VFA) decoding layer as a replacement to the standard vote-based spike decoding scheme, to reduce the information loss in spike decoding and, 3) a proposed adaptive repolarization (resetting) mechanism that accelerates SNNs' learning by enhancing spiking activities. Our experimental results on two established benchmark datasets (MNIST/EMNIST) show that our network architecture resulted in superior performance compared to the widely used FC architecture and a more advanced Locally-Connected (LC) architecture, and that our SNN achieved competitive results with state-of-the-art unsupervised SNNs (95.64%/80.11% accuracy on the MNIST/EMNISE dataset) while having superior learning efficiency and robustness against hardware damage. Our SNN achieved great classification accuracy with only hundreds of training iterations, and random destruction of large numbers of synapses or neurons only led to negligible performance degradation.
description: Published at Neurocomputing
Synthesis and NMR-based network structure analysis of cationic hydrogels for seawater applications
Creators: name: Fengler, Christian
Publisher: name: Karlsruher Institut für Technologie (KIT)
Year: 2023
Subjects: hydrogels
relaxometry
desalination
superabsorbent polymers

description: Superabsorbent polymers (SAPs) are hydrophilic polymer networks (i. e., hydrogels) that contain charged monomer units along the polymer backbone. Poly(sodium acrylate) (PSA), which has negatively charged carboxylate groups, is the most prominent chemical structure of SAPs. Recent studies have shown that PSA can be used as a separation medium for the desalination of salt water. This approach, however, is limited to NaCl solutions because the divalent Mg$^{2+}$ and Ca$^{2+}$ cations in seawater interact electrostatically with the anionic polymer backbone of PSA, inducing thereby a network collapse. To overcome this limitation, this dissertation explores the swelling and desalination capacity of cationic SAPs in seawater. Two cationic SAP model systems with distinct functional groups were synthesized. The first one is based on a poly(acrylamide) (PAM) derivative with a trimethyl quaternary ammonium group as the positively charged monomer unit. The second model system is based on poly(vinyl amine) (PVAm) bearing positively charged ammonium groups. Swelling capacity measurements reveal that divalent SO$_{4}^{2-}$ anions in seawater induce a network collapse of PVAm similar to the PSA analogue. In contrast, the swelling behavior of PAM hydrogels is fully unaffected by seawater, suggesting that the quaternary ammonium moiety is essential to provide seawater resistant swelling properties of SAPs. In addition to swelling capacity studies, this dissertation aims to advance our understanding of the intriguing interplay between macroscopic, mechanical properties and molecular dynamics of the hydrogel network. Due to the inherent multi-length scale structural complexity of hydrogels, the quantitative correlation of mechanical properties with molecular dynamics remains a longstanding challenge. An advanced rheometer setup consisting of a portable low-field NMR unit that is integrated into a rheometer was used to study the gelation kinetics of acrylic acid (AAc) hydrogels. The elastic modulus G′ was studied by small amplitude oscillatory time sweeps whereas the local molecular mobility of polymer network chains was probed by T$_{2}$ relaxation measurements. From the in-situ G′ and T$_{2}$ correlation plots, it can be concluded that the elastic plateau modulus is inversely proportional to the T$_{2}$ relaxation time of the hydrogel. Consequently, the mechanical strength of hydrogels can be predicted based on the segmental mobility of polymer network chains, which has important implications for the further development of non-invasive and forceless mechanical characterization techniques.
An Introductory Tutorial on Cohort State-Transition Models in R Using a Cost-Effectiveness Analysis Example
Creators: name: Alarid-Escudero, Fernando
name: Krijkamp, Eline M.
name: Enns, Eva A.
name: Yang, Alan
name: Hunink, M. G. Myriam
name: Pechlivanoglou, Petros
name: Jalal, Hawre
Publisher: name: arXiv
Year: 2020
Subjects: subject: Applications (stat.AP)
subject: Quantitative Methods (q-bio.QM)
subject: Computation (stat.CO)
subject: FOS: Computer and information sciences
subject: FOS: Biological sciences
subject: G.3; I.6.5; J.3; J.4
subject: 97M60 (Primary) 92D30 92B15, 60J10 (Secondary)

description: Decision models can combine information from different sources to simulate the long-term consequences of alternative strategies in the presence of uncertainty. A cohort state-transition model (cSTM) is a decision model commonly used in medical decision-making to simulate the transitions of a hypothetical cohort among various health states over time. This tutorial focuses on time-independent cSTM, where transition probabilities among health states remain constant over time. We implement time-independent cSTM in R, an open-source mathematical and statistical programming language. We illustrate time-independent cSTMs using a previously published decision model, calculate costs and effectiveness outcomes, conduct a cost-effectiveness analysis of multiple strategies, including a probabilistic sensitivity analysis. We provide open-source code in R to facilitate wider adoption. In a second, more advanced tutorial, we illustrate time-dependent cSTMs.
description: Tutorial with 30 pages, 6 tables and 6 figures. For R code, see https://github.com/DARTH-git/cohort-modeling-tutorial-intro
title: Design for Accessible Collaborative Engagement: Making online synchronous collaborative learning more accessible for students with sensory impairments.
Creators: name: Buxton, Jo
Publisher: name: The Open University
Year: 2023

description: This thesis looks at the accessibility of collaborative learning and the barriers to engagement experienced by blind/visually impaired (BVI) students and deaf/hard of hearing (DHH) students. It focuses specifically on online synchronous collaborative learning after establishing that this format presented the greatest barriers, and that these student groups were not engaging. Taking a design-based research (DBR) approach, five studies were undertaken to identify these barriers and determine potential interventions. The product of the research, a result of collaborative design by the participants in the study, is a framework for accessible collaborative engagement represented in the form of an interactive website model, the Model for Accessible Collaborative Engagement (MACE). The studies involved representatives of all stakeholders in the collaborative learning process at the institution (the Open University): students, tutors, modules teams, academics, support staff, and the student union Disabled Students Group. These studies took the form of an online survey of 327 students, 10 interviews with staff and students, 6 staff workshops and a collaborative design focus group. With significant representation of the target groups (BVI and DHH) in all studies, and taking an iterative approach to the design, evaluation and construction of the framework model, the studies established that barriers existed in four main categories covering different themes: 1. Communications: aural, visual, screen reading and navigation, text and captioning, lip reading and non-verbal communications, interpretation and third-party communications, mode control, and synchronisation. 2. Emotional and Social Factors: familiarisation, support networks, self-advocacy, opting out, cognitive load, and stress and anxiety. 3. Provisioning and Technical Factors: dissemination, speed and pacing of sessions, staff training, participation control, group size, technical provisioning, and recordings. 4. Activity and Session Design: Volume of materials, advance materials, accessible materials, accessible activities, and session formats. Interventions were designed that could reduce the barriers in each of these categories and themes by adjustments and changes from both the student and institutional standpoints. MACE is designed to be utilised by both students and staff to provide guidance and suggestions on how to identify and acknowledge these barriers and implement interventions to reduce them. This research represents an original and essential contribution to the field of investigation. As well as informing future research inquiry, the model can be used by all participants and stakeholders in online collaborative learning to help reduce barriers for BVI and DHH students and improve inclusivity in synchronous online events.
Minimal Solvers for Indoor UAV Positioning
Creators: name: Örnhag, Marcus Valtonen
name: Persson, Patrik
name: Wadenbäck, Mårten
name: Åström, Kalle
name: Heyden, Anders
Publisher: name: arXiv
Year: 2020
Subjects: subject: Computer Vision and Pattern Recognition (cs.CV)
subject: FOS: Computer and information sciences

description: In this paper we consider a collection of relative pose problems which arise naturally in applications for visual indoor UAV navigation. We focus on cases where additional information from an onboard IMU is available and thus provides a partial extrinsic calibration through the gravitational vector. The solvers are designed for a partially calibrated camera, for a variety of realistic indoor scenarios, which makes it possible to navigate using images of the ground floor. Current state-of-the-art solvers use more general assumptions, such as using arbitrary planar structures; however, these solvers do not yield adequate reconstructions for real scenes, nor do they perform fast enough to be incorporated in real-time systems. We show that the proposed solvers enjoy better numerical stability, are faster, and require fewer point correspondences, compared to state-of-the-art solvers. These properties are vital components for robust navigation in real-time systems, and we demonstrate on both synthetic and real data that our method outperforms other methods, and yields superior motion estimation.
Conquering Data Variations in Resolution: A Slice-Aware Multi-Branch Decoder Network
Creators: name: Wang, Shuxin
name: Cao, Shilei
name: Chai, Zhizhong
name: Wei, Dong
name: Ma, Kai
name: Wang, Liansheng
name: Zheng, Yefeng
Publisher: name: arXiv
Year: 2022
Subjects: subject: Image and Video Processing (eess.IV)
subject: Computer Vision and Pattern Recognition (cs.CV)
subject: FOS: Electrical engineering, electronic engineering, information engineering
subject: FOS: Computer and information sciences

description: Fully convolutional neural networks have made promising progress in joint liver and liver tumor segmentation. Instead of following the debates over 2D versus 3D networks (for example, pursuing the balance between large-scale 2D pretraining and 3D context), in this paper, we novelly identify the wide variation in the ratio between intra- and inter-slice resolutions as a crucial obstacle to the performance. To tackle the mismatch between the intra- and inter-slice information, we propose a slice-aware 2.5D network that emphasizes extracting discriminative features utilizing not only in-plane semantics but also out-of-plane coherence for each separate slice. Specifically, we present a slice-wise multi-input multi-output architecture to instantiate such a design paradigm, which contains a Multi-Branch Decoder (MD) with a Slice-centric Attention Block (SAB) for learning slice-specific features and a Densely Connected Dice (DCD) loss to regularize the inter-slice predictions to be coherent and continuous. Based on the aforementioned innovations, we achieve state-of-the-art results on the MICCAI 2017 Liver Tumor Segmentation (LiTS) dataset. Besides, we also test our model on the ISBI 2019 Segmentation of THoracic Organs at Risk (SegTHOR) dataset, and the result proves the robustness and generalizability of the proposed method in other segmentation tasks.
description: Published by IEEE TMI
Centralizers and normalizers of local analytic and formal vector fields
Creators: name: Kruff, Niclas
name: Walcher, Sebastian
name: Zhang, Xiang
Publisher: name: arXiv
Year: 2020
Subjects: subject: Dynamical Systems (math.DS)
subject: FOS: Mathematics
subject: 34A34, 34C14, 37G05, 37G40

description: We investigate the structure of the centralizer and the normalizer of a local analytic or formal differential system at a nondegenerate stationary point, using the theory of Poincaré-Dulac normal forms. Our main results are concerned with the formal case. We obtain a description of the relation between centralizer and normalizer, sharp dimension estimates when the centralizer of the linearization has finite dimension, and lower estimates for the dimension of the centralizer in general. For a distinguished class of linear vector fields (which is sufficiently large to be of interest) we obtain a precise characterization of the centralizer for corresponding normal forms in the generic case. Moreover, in view of their relation to normalizers, we discuss inverse Jacobi multipliers and obtain existence criteria and nonexistence results for several classes of vector fields.
ePLANET D3.3 – Platform available for all stakeholders (Version 1)
Creators: name: LAGUNA, Gerard
name: CONTRERAS, Francesc
Publisher: name: Zenodo
Year: 2022
Subjects: Energy Transition
Sustainable Energy Action Plans
SEAPs
Sustainable Energy Actions and Climate Plans
SECAPs
Public Authorities
Local and Regional governments
Municipalities
Green energy adoption
Data harmonization
Open source
Data Base
Decarbonisation
Open Call

description: The ePLANET platform consist on different services that covers the needs and wishes identified in the surveys performed in the pilot sites and that are set as use cases. This set of services will be implemented through different tools and applications that will constitute the ePLANET federated platform, a multi-platform adapted to the pilot sites and easily scalable to other regions within the EU. This document is the first version of three that will be presented at the end of each year with the status and developments of the platform end-user interfaces.
Additional file 2 of Contradictions hindering the provision of mental healthcare and psychosocial services to women experiencing homelessness in Addis Ababa, Ethiopia: service providers’ and programme coordinators’ experiences and perspectives
Creators: name: Yohannes, Kalkidan
name: Berhane, Yemane
name: Bradby, Hannah
name: Herzig van Wees, Sibylle
name: Målqvist, Mats
Publisher: name: figshare
Year: 2023
Subjects: subject: Biotechnology
subject: Sociology
subject: FOS: Sociology
subject: Biological Sciences not elsewhere classified
subject: Mental Health

description: Supplementary Material 2