cometadata/datacite-rtg-text-other-reclassification-records huggingface dataset:
New insights into reaction-diffusion kinetic coupling in the esterification of acetic acid with isopropanol over niobium pentoxide
Creators: name: Trindade, Aline C. M.
name: Enzweiler, Heveline
name: Salau, Nina P. G.
Publisher: name: Taylor & Francis
Year: 2021
Subjects: subject: Biophysics
subject: Biochemistry
subject: Medicine
subject: Molecular Biology
subject: 39999 Chemical Sciences not elsewhere classified
subject: FOS: Chemical sciences
subject: Ecology
subject: FOS: Biological sciences
subject: 69999 Biological Sciences not elsewhere classified

description: Three reaction-diffusion kinetic models were developed to explain the kinetics and the mass transfer of the esterification of acetic acid with isopropanol, over niobium pentoxide. The kinetic equations were defined by the pseudo-homogeneous, Eley-Rideal and Langmuir-Hinshelwood-Hougen-Watson models. Firstly, the effect of Nb2O5 calcination temperature was evaluated. Later, the effects of reaction temperature, stirring speed and catalyst loading on the reaction conversion were also evaluated. Method of lines was applied to solve the partial differential equations of the models. The kinetic parameters were estimated using a hybrid combination of particle swarm optimization and non-linear least squares algorithm. The performance of the models was evaluated by statistical metrics and Fisher’s test. Reaction tests showed that conversion increased at higher temperature and catalyst loading, however, it remained constant with increasing stirring speed. The conversion increased by around six times when the temperature was raised from 60 to 90 °C. An increase of 7.27% in the conversion was seen when increasing the catalyst loading from 5 to 6 g. Despite the very good models’ prediction, the reaction-diffusion model with LHHW kinetics was the more accurate to predict the heterogeneous esterification of acetic acid with isopropanol over niobium pentoxide according to the statistical analysis.
title: Robust observer-based fault detection and isolation in the standard control problem framework
Creators: name: Wahrburg, Arne
name: Khodaverdian, Saman
name: Adamy, Jürgen
Publisher: name: IFAC - International Federation of Automatic Control
Year: 2023

description: This paper deals with the design of robust fault detection and isolation observers where only a single observer is employed to isolate different faults. To this end, the problem of parameterizing such observers is shown to be equivalent to designing a structurally constrained controller in the standard control problem framework. Thereby, the problem is reformulated as a well known classical control problem, which enables the use of existing tools to optimize robustness with respect to arbitrary exogenous disturbances. To account for parametric uncertainties, an approximate model matching approach is used.
Averaged transverse momentum correlations of hadrons in relativistic heavy-ion collisions
Creators: name: Feng, Yan-ting
name: Shao, Feng-lan
name: Song, Jun
Publisher: name: arXiv
Year: 2022
Subjects: subject: Nuclear Theory (nucl-th)
subject: FOS: Physical sciences

description: We compile experimental data for the averaged transverse momentum ($\left\langle p_{T}\right\rangle $) of proton, $Λ$, $Ξ^{-}$, $Ω^{-}$ and $ϕ$ at mid-rapidity in Au+Au collisions at $\sqrt{s_{NN}}=$ 200, 39, 27, 19.6, 11.5, 7.7 GeV and in Pb+Pb collisions at $\sqrt{s_{NN}}=$ 2.76 TeV, and find that experimental data of these hadrons exhibit systematic correlations. We apply a quark combination model with equal-velocity combination approximation to derive analytic formulas of hadronic $\left\langle p_{T}\right\rangle $ in the case of exponential form of quark $p_{T}$ spectra at hadronization. We use them to successfully explain the systematic correlations exhibited in $\left\langle p_{T}\right\rangle $ data of $pΛ$, $ΛΞ^{-}$, $Ξ^{-}Ω^{-}$ and $Ξ^{-}ϕ$ pairs. We also use them to successfully explain the regularity observed in $\left\langle p_{T}\right\rangle $ of these hadrons as the function of $(dN_{ch}/dy)/(N_{part}/2)$ at mid-rapidity in central heavy-ion collisions at both RHIC and LHC energies. Our results suggest that the constituent quark degrees of freedom and the equal-velocity combination of these constituent quarks at hadronization play important role in understanding the production of baryons and $ϕ$ meson at these RHIC and LHC energies.
description: 10 pages, 7 figures
Improving feeding profile strategy for hydrogen production by Cyanothece sp. ATCC 51142 using meta-heuristic methods
Creators: name: Valvassore, Murielk Sebrian
name: de Freitas, Hanniel Ferreira Sarmento
name: Andrade, Cid Marcos Gonçalves
name: Costa, Caliane Bastos Borba
Publisher: name: Taylor & Francis
Year: 2022
Subjects: subject: Biochemistry
subject: Microbiology
subject: FOS: Biological sciences
subject: Genetics
subject: Molecular Biology
subject: Pharmacology
subject: Biotechnology
subject: 39999 Chemical Sciences not elsewhere classified
subject: FOS: Chemical sciences
subject: Immunology
subject: FOS: Clinical medicine
subject: 69999 Biological Sciences not elsewhere classified
subject: 80699 Information Systems not elsewhere classified
subject: FOS: Computer and information sciences
subject: Cancer

description: Hydrogen has received considerable attention as a sustainable energy source to the future and biological hydrogen production has been gaining consideration as a potential method. One microorganism that produces hydrogen is the nitrogen-fixing cyanobacterium Cyanothece sp. ATCC 51142, which stands out for its rate of hydrogen production. However, there are still some challenges for understanding and improving the hydrogen production process by this cyanobacterium. Thus, this work aimed to perform an in silico study of a feeding profile strategy for hydrogen production by Cyanothece sp. ATCC 51142 in batch/fed-batch process to improve the amount of hydrogen generated during the process. Two meta-heuristic methods were used to find the best feeding profile and the switch time between batch and fed-batch modes. Hydrogen production is similar in the results of both methods, but PSO indicated a simpler feeding policy, leading to 19.5% more hydrogen produced than that reported in the literature.
Geometry-dependent skin effects in reciprocal photonic crystals
Creators: name: Fang, Zhening
name: Hu, Mengying
name: Zhou, Lei
name: Ding, Kun
Publisher: name: arXiv
Year: 2022
Subjects: subject: Optics (physics.optics)
subject: Other Condensed Matter (cond-mat.other)
subject: FOS: Physical sciences

description: Skin effect that all eigenmodes within a frequency range become edge states is dictated by the topological properties of complex eigenvalues unique in non-Hermitian systems. The prevailing attempts to realize such a fascinating effect are confined to either one-dimensional or nonreciprocal systems exhibiting asymmetric couplings. Here, inspired by a recent model Hamiltonian theory, we propose a realistic reciprocal two-dimensional (2D) photonic crystal (PhC) system that shows the desired skin effect. Specifically, we establish a routine for designing such non-Hermitian systems via revealing the inherent connections between the non-trivial eigenvalue topology of order-2 exceptional points (EPs) and the skin effects. Guided by the proposed strategy, we successfully design a 2D PhC that possesses the EPs with nonzero eigenvalue winding numbers. The spectral area along a specific wavevector direction is then formed by leveraging the symmetry of the macroscopic geometry and the unit cell. The projected-band-structure calculations are performed to demonstrate that the desired skin effect exists at the specific crystalline interfaces. We finally employ time-domain simulations to vividly illustrate this phenomenon by exciting a pulse at the center of a finite-sized PhC. Our results form a solid basis for further experimental confirmations and applications of the skin effect.
description: 19 pages, 4 figures
Late-time Structure of the Bunch-Davies De Sitter Wavefunction
Creators: name: Anninos, Dionysios
name: Anous, Tarek
name: Freedman, Daniel Z.
name: Konstantinidis, George
Publisher: name: arXiv
Year: 2014
Subjects: subject: High Energy Physics - Theory (hep-th)
subject: FOS: Physical sciences

description: We examine the late time behavior of the Bunch-Davies wavefunction for interacting light fields in a de Sitter background. We use perturbative techniques developed in the framework of AdS/CFT, and analytically continue to compute tree and loop level contributions to the Bunch-Davies wavefunction. We consider self-interacting scalars of general mass, but focus especially on the massless and conformally coupled cases. We show that certain contributions grow logarithmically in conformal time both at tree and loop level. We also consider gauge fields and gravitons. The four-dimensional Fefferman-Graham expansion of classical asymptotically de Sitter solutions is used to show that the wavefunction contains no logarithmic growth in the pure graviton sector at tree level. Finally, assuming a holographic relation between the wavefunction and the partition function of a conformal field theory, we interpret the logarithmic growths in the language of conformal field theory.
description: 41 pages, 1 figure, minor typos fixed, journal references added
Isogeometric Analysis of Acoustic Scattering with Perfectly Matched Layers (IGAPML)
Creators: name: Venås, Jon Vegard
name: Kvamsdal, Trond
Publisher: name: arXiv
Year: 2022
Subjects: subject: Numerical Analysis (math.NA)
subject: FOS: Mathematics

description: The perfectly matched layer (PML) formulation is a prominent way of handling radiation problems in unbounded domain and has gained interest due to its simple implementation in finite element codes. However, its simplicity can be advanced further using the isogeometric framework. This work presents a spline based PML formulation which avoids additional coordinate transformation as the formulation is based on the same space in which the numerical solution is sought. The procedure can be automated for any convex artificial boundary. This removes restrictions on the domain construction using PML and can therefore reduce computational cost and improve mesh quality. The usage of spline basis functions with higher continuity also improves the accuracy of the numerical solution.
Interaction-Enhanced Topological Hall Effects in Strained Twisted Bilayer Graphene
Creators: name: Pantaleón, Pierre A.
name: Phong, Vo Tien
name: Naumis, Gerardo G.
name: Guinea, Francisco
Publisher: name: arXiv
Year: 2022
Subjects: subject: Mesoscale and Nanoscale Physics (cond-mat.mes-hall)
subject: Strongly Correlated Electrons (cond-mat.str-el)
subject: FOS: Physical sciences

description: We analyze the effects of the long-range Coulomb interaction on the distribution of Berry curvature among the bands near charge neutrality of twisted bilayer graphene (TBG) closely aligned with hexagonal boron nitride (hBN). Due to the suppressed dispersion of the narrow bands, the band structure is strongly renormalized by electron-electron interactions, and thus, the associated topological properties of the bands are sensitive to filling. Using a Hartree formalism, we calculate the linear and nonlinear Hall conductivities, and find that for certain fillings, the remote bands contribute substantially to the Hall currents while the contribution from the central bands is suppressed. In particular, we find that these currents are generically substantial near regions of energies where the bands are highly entangled with each other, often featuring doping-induced band inversions. Our results demonstrate that topological transport in TBG/hBN is substantially modified by electron-electron interactions, which offer a simple explanation to recent experimental results.
description: 7 + 7 pages, 4 + 5 figures. Comments are very appreciated!
Hierarchical Label-wise Attention Transformer Model for Explainable ICD Coding
Creators: name: Liu, Leibo
name: Perez-Concha, Oscar
name: Nguyen, Anthony
name: Bennett, Vicki
name: Jorm, Louisa
Publisher: name: arXiv
Year: 2022
Subjects: subject: Machine Learning (cs.LG)
subject: Computation and Language (cs.CL)
subject: FOS: Computer and information sciences

description: International Classification of Diseases (ICD) coding plays an important role in systematically classifying morbidity and mortality data. In this study, we propose a hierarchical label-wise attention Transformer model (HiLAT) for the explainable prediction of ICD codes from clinical documents. HiLAT firstly fine-tunes a pretrained Transformer model to represent the tokens of clinical documents. We subsequently employ a two-level hierarchical label-wise attention mechanism that creates label-specific document representations. These representations are in turn used by a feed-forward neural network to predict whether a specific ICD code is assigned to the input clinical document of interest. We evaluate HiLAT using hospital discharge summaries and their corresponding ICD-9 codes from the MIMIC-III database. To investigate the performance of different types of Transformer models, we develop ClinicalplusXLNet, which conducts continual pretraining from XLNet-Base using all the MIMIC-III clinical notes. The experiment results show that the F1 scores of the HiLAT+ClinicalplusXLNet outperform the previous state-of-the-art models for the top-50 most frequent ICD-9 codes from MIMIC-III. Visualisations of attention weights present a potential explainability tool for checking the face validity of ICD code predictions.
Evolution and Detection of Polymorphic and Metamorphic Malwares: A Survey
Creators: name: Sharma, Ashu
name: Sahay, S. K.
Publisher: name: arXiv
Year: 2014
Subjects: subject: Cryptography and Security (cs.CR)
subject: FOS: Computer and information sciences

description: Malwares are big threat to digital world and evolving with high complexity. It can penetrate networks, steal confidential information from computers, bring down servers and can cripple infrastructures etc. To combat the threat/attacks from the malwares, anti- malwares have been developed. The existing anti-malwares are mostly based on the assumption that the malware structure does not changes appreciably. But the recent advancement in second generation malwares can create variants and hence posed a challenge to anti-malwares developers. To combat the threat/attacks from the second generation malwares with low false alarm we present our survey on malwares and its detection techniques.
description: 5 Pages
Tunneling phase diagrams in anisotropic Multi-Weyl semimetals
Creators: name: Bouhlal, Ahmed
name: Abbout, Adel
name: Jellal, Ahmed
name: Bahlouli, Hocine
name: Vogl, Michael
Publisher: name: arXiv
Year: 2022
Subjects: subject: Mesoscale and Nanoscale Physics (cond-mat.mes-hall)
subject: FOS: Physical sciences

description: Motivated by the exciting prediction of Multi-Weyl topological semimetals that are stabilized by point group symmetries [Phys. Rev. Lett. 108 (2012) 266802], we study tunneling phenomena for a class of anisotropic Multi-Weyl semimetals. We find that a distant detector for different ranges of an anisotropy parameter $λ$ and incident angle $θ$ will measure a different number of propagating transmitted modes. We present these findings in terms of phase diagrams that is valid for an incoming wave with fixed wavenumber $k$--energy is not fixed. To gain a deeper understanding of this phenomenon we then focus on the simplest case of an anisotropic quadratic Weyl-semimetal and analyze tunneling coefficients analytically and numerically to confirm the observations from the phase diagram. Our results show non-analytical behavior, which is the hallmark of a phase transition. This serves as a motivation to make a formal analogy with phase transitions that are known from statistical mechanics. Specifically, we argue that the long distance limit in our tunneling problem takes the place of the thermodynamic limit in statistical mechanics. More precisely, find a direct formal connection to the recently developed formalism for dynamical phase transitions [Reports on Progress in Physics 81 (5) (2018) 054001]. We propose that this analogy to phase transitions can help classify transport properties in exotic semimetals.
Interplay and Characterization of Dark Matter Searches at Colliders and in Direct Detection Experiments
Creators: name: Malik, Sarah A.
name: McCabe, Christopher
name: Araujo, Henrique
name: Belyaev, Alexander
name: Boehm, Celine
name: Brooke, Jim
name: Buchmueller, Oliver
name: Davies, Gavin
name: De Roeck, Albert
name: de Vries, Kees
name: Dolan, Matthew J.
name: Ellis, John
name: Fairbairn, Malcolm
name: Flaecher, Henning
name: Gouskos, Loukas
name: Khoze, Valentin V.
name: Landsberg, Greg
name: Newbold, Dave
name: Papucci, Michele
name: Sumner, Timothy
name: Thomas, Marc
name: Worm, Steven
Publisher: name: arXiv
Year: 2014
Subjects: subject: High Energy Physics - Experiment (hep-ex)
subject: High Energy Physics - Phenomenology (hep-ph)
subject: FOS: Physical sciences

description: In this White Paper we present and discuss a concrete proposal for the consistent interpretation of Dark Matter searches at colliders and in direct detection experiments. Based on a specific implementation of simplified models of vector and axial-vector mediator exchanges, this proposal demonstrates how the two search strategies can be compared on an equal footing.
description: White Paper from the Brainstorming Workshop held at Imperial College London on May 29th, 2014
Characterization of two extracellular arabinanases in Lactobacillus crispatus
Creators: Li, Qing
Gänzle, Michael G.
Publisher: name: University of Alberta Library
Year: 2020

Extracellular glycosyl hydrolases are uncommon in lactobacilli and include amylases and fructosidases mediating starch and fructan utilization, respectively. Extracellular arabinanases have not been described in lactobacilli. This study is aimed at identifying the function of an arabinan utilization operon in Lactobacillus crispatus DSM29598 and at characterizing two putative extracellular arabinanases that are located on that operon. The arabinan utilization operon of L. crispatus DSM29598 encodes enzymes for degradation of arabinan, α-galactosidases, β-galactosidases, and enzymes and for utilization of arabinose including phosphoketolase. The two putative extracellular arabinanases, AbnA and AbnB, are homologous to family GH43 endo-arabinanases. In Lactobacillaceae, homologs of these enzymes were identified exclusively in vertebrate-adapted species of the genus Lactobacillus. L. crispatus grew with arabinan from sugar beet pectin as sole carbon source, indicating extracellular arabinanase activity, and produced lactate and acetate, indicating metabolism via the phosphoketolase pathway. The two arabinanases AbnA and AbnB were heterologously expressed and purified by affinity chromatography. AbnA hydrolyzed linear and branched arabinan, while AbnB hydrolyzed only linear arabinan. The optimum pH for AbnA and AbnB was 6 and 7.5, respectively; 40 °C was the optimum temperature for both enzymes. The application of arabinan degrading L. crispatus as probiotic or as synbiotic with pectins may improve the production of short-chain fatty acids from pectin to benefit host health.
Single-Photon Storage in a Ground-State Vapor Cell Quantum Memory
Creators: name: Buser, Gianni
name: Mottola, Roberto
name: Cotting, Björn
name: Wolters, Janik
name: Treutlein, Philipp
Publisher: name: arXiv
Year: 2022
Subjects: subject: Quantum Physics (quant-ph)
subject: FOS: Physical sciences

description: Interfaced single-photon sources and quantum memories for photons together form a foundational component of quantum technology. Achieving compatibility between heterogeneous, state-of-the-art devices is a long-standing challenge. We built and successfully interfaced a heralded single-photon source based on cavity-enhanced spontaneous parametric down-conversion in ppKTP and a matched memory based on electromagnetically induced transparency in warm $^{87}$Rb vapor. The bandwidth of the photons emitted by the source is 370 MHz, placing its speed in the technologically relevant regime while remaining well within the acceptance bandwidth of the memory. Simultaneously, the experimental complexity is kept low, with all components operating at or above room temperature. Read-out noise of the memory is considerably reduced by exploiting polarization selection rules in the hyperfine structure of spin-polarized atoms. For the first time, we demonstrate single-photon storage and retrieval in a ground-state vapor cell memory, with $g_{c,\text{ret}}^{(2)}=0.177(23)$ demonstrating the single-photon character of the retrieved light. Our platform of single-photon source and atomic memory is attractive for future experiments on room-temperature quantum networks operating at high bandwidth.
description: 9 pages, 5 figures
Sad songs for sad lovers
Creators: name: Williams, Patience
Publisher: name: No Publisher Supplied
Year: 2020

description: This collection of interlinked short stories highlights eclectic youth from the Midwest. Many of them come from marginalized identities (sexuality, womanhood, and race) but these stories focus on their souls and their spirits more than anything. Here's a short excerpt taken from the beginning: Not so long ago, most of the Midwestern youth had been gifted with the solemn loneliness of believing they were a selected few of their kind, stranded but gleaming from the middle of America like diamonds. Now, overcast fell into their eyes and they weren’t sure which of their bouquet of experiences they wished to share with the world. They had fears of limitation, inadequacy, and felt a lack of big-city knowledge and cultural influence. Their confidence wilted, their politeness shifted from a place of sincerity to a fear of being taken as something they weren’t—like an insensitive person or a supporter of an evil that seemed to be transitioning to a normalization in the country.
Partial quark-lepton universality and neutrino CP violation
Creators: name: Liao, Jiajun
name: Marfatia, D.
name: Whisnant, K.
Publisher: name: arXiv
Year: 2014
Subjects: subject: High Energy Physics - Phenomenology (hep-ph)
subject: FOS: Physical sciences

description: We study a model with partial quark-lepton universality that can naturally arise in grand unified theories. We find that constraints on the model can be reduced to a single condition on the Dirac CP phase $δ$ in the neutrino sector. Using our current knowledge of the CKM and PMNS mixing matrices, we predict $-32.4^\circ < δ< 32.0^\circ$ at $2σ$.
description: 8 pages, 1 figure. Version to appear in the special issue, "Neutrino Masses and Oscillations 2015", of Advances in High Energy Physics
title: Petits riens sophocléens : Antigone III* (v. 513, 517–521, 527–530, 577–581, 594–602, 611–619, 666–667, 696–698, 703–704, 728–730)
Creators: name: Liberman, Gauthier
Publisher: name: Hyperboreus 29: 1 (2023) 29–49
Year: 2023

description: This is the third of five sets of text-critical, exegetical and sometimes metrical remarks on Antigone. These *Sophocleuncula are not only minute philological notes but they involve broader issues having a bearing on the interpretation and meaning of the drama as a whole. These remarks were composed with a view to drawing attention to a number of forgotten or unseen difficulties and to trying to address a number of seen but unsolved problems more efficaciously. The text and meaning of not a few other passages from works of Sophocles or of other writers are also dealt with.
description: Статья представляет собой третью из пяти последовательных публикаций, содержащих замечания о критике текста, экзегетических и метрических сложностях в Антигоне Софокла. *Sophocleuncula посвящены не только част­ным филологическим проблемам, но и более общим вопросам, значимым для интерпретации драмы в целом. Заметки призваны привлечь вни­мание к ряду забытых или упущенных из виду сложностей и предложить более действенные решения осознаваемых, но нерешенных проблем. К анализу привлекается также немало пассажей из других произведений Софокла и других авторов.
Capturing the ground state of uranium dioxide from first principles: crystal distortion, magnetic structure, and phonons
Creators: name: Zhou, Shuxiang
name: Ma, Hao
name: Xiao, Enda
name: Gofryk, Krzysztof
name: Jiang, Chao
name: Manley, Michael E.
name: Hurley, David H.
name: Marianetti, Chris A.
Publisher: name: arXiv
Year: 2022
Subjects: subject: Materials Science (cond-mat.mtrl-sci)
subject: Strongly Correlated Electrons (cond-mat.str-el)
subject: FOS: Physical sciences

description: Uranium dioxide (UO$_2$) remains a formidable challenge for first-principles approaches, due to the complex interplay among spin-orbit coupling, Mott physics, magnetic ordering, and crystal distortions. Here we use DFT+$U$ to explore UO$_2$ at zero temperature, incorporating all the aforementioned phenomena. The technical challenge is to navigate the many metastable electronic states produced by DFT+$U$, which is acomplished using $f$-orbital occupation matrix control to search for the ground state. We restrict our search to the high-symmetry ferromagnetic phase, including spin-orbit coupling, which produces a previously unreported occupation matrix. This newfound occupation matrix is then used as an initialization to explore the broken symmetry phases. We find the oxygen cage distortion of the 3k antiferromagnetic state to be in excellent agreement with experiments, and both the spin-orbit coupling and the Hubbard $U$ are critical ingredients. We demonstrate that only select phonon modes have a strong dependence on the Hubbard $U$, whereas magnetic ordering has only a small influence overall. We perform measurements of the phonon dispersion curves using inelastic neutron scattering, and our calculations show good agreement when using reasonable values of $U$. The quantitative success of DFT+$U$ warrants exploration of thermal transport and other observables within this level of theory.
Improving feeding profile strategy for hydrogen production by Cyanothece sp. ATCC 51142 using meta-heuristic methods
Creators: name: Valvassore, Murielk Sebrian
name: de Freitas, Hanniel Ferreira Sarmento
name: Andrade, Cid Marcos Gonçalves
name: Costa, Caliane Bastos Borba
Publisher: name: Taylor & Francis
Year: 2021
Subjects: subject: Biochemistry
subject: Microbiology
subject: FOS: Biological sciences
subject: Genetics
subject: Molecular Biology
subject: Pharmacology
subject: Biotechnology
subject: 39999 Chemical Sciences not elsewhere classified
subject: FOS: Chemical sciences
subject: Immunology
subject: FOS: Clinical medicine
subject: 69999 Biological Sciences not elsewhere classified
subject: 80699 Information Systems not elsewhere classified
subject: FOS: Computer and information sciences
subject: Cancer

description: Hydrogen has received considerable attention as a sustainable energy source to the future and biological hydrogen production has been gaining consideration as a potential method. One microorganism that produces hydrogen is the nitrogen-fixing cyanobacterium Cyanothece sp. ATCC 51142, which stands out for its rate of hydrogen production. However, there are still some challenges for understanding and improving the hydrogen production process by this cyanobacterium. Thus, this work aimed to perform an in silico study of a feeding profile strategy for hydrogen production by Cyanothece sp. ATCC 51142 in batch/fed-batch process to improve the amount of hydrogen generated during the process. Two meta-heuristic methods were used to find the best feeding profile and the switch time between batch and fed-batch modes. Hydrogen production is similar in the results of both methods, but PSO indicated a simpler feeding policy, leading to 19.5% more hydrogen produced than that reported in the literature.
Controlled Curie temperature, magnetocrystalline anisotropy, and valley polarization in 2D ferromagnetic Janus 2H-VSeS monolayer
Creators: name: Li, Cunquan
name: An, Yukai
Publisher: name: arXiv
Year: 2022
Subjects: subject: Materials Science (cond-mat.mtrl-sci)
subject: FOS: Physical sciences

description: Inspired by the successful synthesis of two-dimensional (2D) V-based Janus dichloride monolayers with intrinsic ferromagnetism and high Curie temperature (T$_{c}$), the electronic structure, spin-valley splitting and magnetic anisotropy of Janus 2H-VSeS monolayers are investigated in detailed using first-principles calculations. The results show that the Janus 2H-VSeS monolayer exhibits a large valley splitting of 105meV, high T$_{c}$ of 278K and good magnetocrystalline anisotropy (0.31meV) contributed by the in-plane d$_{x^{2}-y^{2}}$/d$_{xy}$ orbitals of V atoms. The biaxial strain ($-$8%<$\varepsilon$<8%) can effectively tune the magnetic moments of V atom, valley splitting $Δ$E, T$_{c}$ and MAE of Janus 2H-VSeS monolayer. The corresponding $Δ$E and T$_{c}$ are adjusted from 72meV to 106.8meV and from 180K to 340K, respectively. The electronic phase transition from bipolar magnetic semiconductor (BMS) to half-semiconductor (HSC), spin gapless semiconductor (SGS), and half-metal (HM) is also observed due to the change of V 3d-orbital occupation. Due to the broken space- and time-reversal symmetry, the opposite valley charge carriers carry opposite Berry curvature, which leads to prominent anomalous Hall conductivity at the K and K$^{\prime}$ valleys. The maximum modulation of Berry curvature can reach to 45% and 9.5% by applying the biaxial strain and charge carrier doping, respectively. The stable in-plane magnetocrystalline anisotropy and large spontaneous valley polarization make the ferromagnetic Janus 2H-VSeS monolayer a promising material for achieving the spintronics and valleytronics devices.
description: 13 pages, 13 figures
Gestione banca sorgenti
Creators: name: SCHIAVONE, Filomena
name: COMASTRI, Andrea
name: CONFORTI, Vito
Publisher: name: OAS Bologna
Year: 2022

description: Il servizio di sorveglianza fisica della radioprotezione INAF OAS Bologna, prevede, a supporto del DL e dell’EQ, la posizione organizzativa denominata “Responsabile della Banca Sorgenti e dosimetria (RBS)” con responsabilità riguardo alla Banca Radiosorgenti detenute.
A new integral formula for Heckman-Opdam hypergeometric functions
Creators: name: Sun, Yi
Publisher: name: arXiv
Year: 2014
Subjects: subject: Representation Theory (math.RT)
subject: Quantum Algebra (math.QA)
subject: FOS: Mathematics
subject: 33C67 (primary), 81R12, 22E46 (secondary)

description: We provide Harish-Chandra type formulas for the multivariate Bessel functions and Heckman-Opdam hypergeometric functions as representation-valued integrals over dressing orbits. Our expression is the quasi-classical limit of the realization of Macdonald polynomials as traces of intertwiners of quantum groups given by Etingof-Kirillov Jr. Integration over the Liouville tori of the Gelfand-Tsetlin integrable system and adjunction for higher Calogero-Moser Hamiltonians recovers and gives a new proof of the integral realization over Gelfand-Tsetlin polytopes which appeared in the recent work of Borodin-Gorin on the beta-Jacobi corners ensemble.
description: 30 pages. v4: corrected sign convention in definition of CM Hamiltonians and Dunkl operators; corrected computations of adjoints in Sections 4 and 5; main results are unchanged
Psychotherapists’ attitudes toward polyamory and responses to polyamorous clients: an exploratory study
Creators: name: Herbert, Adam
Publisher: name: No Publisher Supplied
Year: 2020

description: Western culture has historically promoted monogamy as the most widely accepted and advocated ethical/moral relationship option available. Polyamory, in contrast to monogamy, is defined by the possibility of multiple sexual or romantic partners simultaneously and openly. Recent research indicates that polyamory is becoming more prevalent as a relationship style. However, as public interest in polyamory has grown, education about polyamory has not made it into standard mental health curricula. Historically, the mental health fields have tended to pathologize polyamory. There is a dearth of studies exploring clinicians’ attitudes towards polyamory and how those attitudes may be influencing their responses to polyamorous clients. To address this gap, this study investigated psychotherapists’ attitudes towards polyamory and determined whether relationships exists between such attitudes and responses to polyamorous clients. This study also sought to identify which psychotherapist characteristics may be associated with anti-polyamory attitudes and responses to polyamorous clients. The study was conducted through an anonymous online survey of practicing mental health practitioners, including professional clinicians and graduate trainees. Participants were asked to read a fictional intake summary of a polyamorous client and then complete two client response measures. Other instruments administered included a measure of attitudes toward polyamory, an assessment of multicultural competency, and a training and experience questionnaire. Quantitative methods consisted of descriptive and inferential statistical analysis. Results displayed a negative, statistically significant relationship (p < .001) between age and attitudes toward polyamory, and a positive, statistically significant relationship (p = .012) between multicultural competence and attitudes toward polyamory. Another hierarchical multiple regression showed that there was a negative, statistically significant relationship (p = .032) between attitudes towards polyamory and unfavorable perceptions of the polyamorous client. Results demonstrate the need for clinicians to be more aware of their own bias and the impact of stigma on the therapeutic relationship, to further their knowledge of nontraditional living patterns, and for training institutions to recognize this as a part of cultural competence and be more mindful of its inclusion in the curricula. Future directions include additional research on the respective impacts of psychotherapists’ political/social values and sexual orientation on attitudes towards polyamory.
Parent perspectives on collaborating with schools to support their transgender children
Creators: name: Levey, Rachel
Publisher: name: No Publisher Supplied
Year: 2020

description: While social acceptance of transgender people is expanding, transgender youth continue to be a vulnerable population. Emerging research in this area has examined how the environmental contexts of a young transgender individual’s life, mostly the home and school environments, impact the individual’s psychosocial development and well-being. Until now, research has separately examined the impacts of the home system and the impacts of the school system. Influenced by Bronfenbrenner’s concept of the mesosystem, meaning the interaction between two microsystems, the current study explored the nature of partnerships between families and schools to support transgender youth from the perspective of parents. The sample was composed of 11 parents of transgender and gender non-conforming children and adolescents. The parents participated in semi-structured interviews, which were transcribed and systematically analyzed. Phase one of the analysis sought to discover emergent themes about the nature of the collaboration between home and school, as perceived by parents. Data showed that parental interactions with schools to support their transgender children were impacted by specific factors related to the three stakeholders involved in the collaborative process: the school factors (e.g., readiness signals, principal communication style), parent factors (e.g., cultural capital) and child factors (e.g., gender identity, personality, academic and/or social-emotional needs). Phase two of the analysis sought to assess whether interactions between parents and schools to support transgender students adhered to Conjoint Behavioral Consultation, a widely-used, 4-stage model of home-school collaboration. Levels of occurrence were based on the number of participants who indicated exposure to aspects of each stage. Analyses showed that there was some occurrence of stage one (needs identification), stage two (plan development), and stage four (plan evaluation), while there was common occurrence of stage three (plan implementation).
Evaluating the efficacy of the family connections program for family members of individuals with borderline personality disorder
Creators: name: Nguyen, Binh-An
Publisher: name: No Publisher Supplied
Year: 2020

description: Background: Family members of those with mental illness frequently assume roles of caregiver, advocate, and guardian, often resulting in experiences of burden, grief, and depression. Prior research has found that family members of individuals with Borderline Personality Disorder (BPD) report more severe consequences to their mental health compared to family members of people suffering other psychiatric diagnoses. BPD is a psychological disorder characterized by unstable, intense affect and typically associated with behaviors (e.g., suicide attempts, self-harm) that shape stressful, chaotic family environments. Family Connections (FC) is a psychoeducational and support intervention for family members of individuals with BPD or those experiencing emotion regulation difficulties. Aims: The present study explores whether participation in FC is associated with: 1) reductions in various forms of negative emotionality (i.e., depression, burden, grief, negative affect, anger), 2) higher levels of positive affect, 3) increases in breadth and use of skillful coping mechanisms, and 4) gains in relationship satisfaction with their loved one. Method: Six FC groups, totaling 64 participants, were conducted in a university training clinic across three years with both family members and graduate student clinicians serving as group leaders. Participants completed a battery of self-report questionnaires prior to, after the sixth session, after the twelfth session, and three months following FC. Results: FC participation was associated with decreases in various negative emotions and increases in positive affect, skills use, and dyadic functioning, as findings yielded statistically significant levels of change for all variables examined pre- to post-assessment. Current results aligned with previous empirical studies on FC that revealed major improvements for burden and grief. Despite the changes demonstrated at post-treatment, not all significant changes were maintained three months following the program. Conclusions: Given the complexity of treating BPD, opportunities to approach psychological treatment from multiple perspectives is likely to be correlated with positive outcomes for clients and family members alike. This present study supported and expanded previous research prompting family members to participate in FC, while encouraging clinicians and clients to involve important people to the individual with BPD in treatment, progress, and growth.
Classes of Delay-Independent Multimessage Multicast Networks with Zero-Delay Nodes
Creators: name: Fong, Silas L.
Publisher: name: arXiv
Year: 2014
Subjects: subject: Information Theory (cs.IT)
subject: FOS: Computer and information sciences

description: In a network, a node is said to incur a delay if its encoding of each transmitted symbol involves only its received symbols obtained before the time slot in which the transmitted symbol is sent (hence the transmitted symbol sent in a time slot cannot depend on the received symbol obtained in the same time slot). A node is said to incur no delay if its received symbol obtained in a time slot is available for encoding its transmitted symbol sent in the same time slot. Under the classical model, every node in the network incurs a delay. In this paper, we investigate the multimessage multicast network (MMN) under a generalized-delay model which allows some nodes to incur no delay. We obtain the capacity regions for three classes of MMNs with zero-delay nodes, namely the deterministic network dominated by product distribution, the MMN consisting of independent DMCs and the wireless erasure network. In addition, we show that for any MMN belonging to one of the above three classes, the set of achievable rate tuples under the generalized-delay model and under the classical model are the same, which implies that the set of achievable rate tuples for the MMN does not depend on the delay amounts incurred by the nodes in the network.
description: 32 pages. Submitted to IEEE Transactions on Information Theory
D2.2 GUARD Reference Architecture
Creators: name: Repetto Matteo
Publisher: name: Zenodo
Year: 2020
Subjects: GUARD

description: This document reports the preliminary design of the GUARD architecture. Starting from the main concepts and motivations behind the proposal, it elaborates on a more concrete technical concept and the business framework the Project addresses. The description clarifies what final outcome is expected from the Project, namely a platform to facilitate the deployment and operation of cyber-security appliances for digital value chains, and illustrates how this solution positions with respect to more traditional security models.
Quantum computing of the $^6$Li nucleus via ordered unitary coupled clusters
Creators: name: Kiss, Oriel
name: Grossi, Michele
name: Lougovski, Pavel
name: Sanchez, Federico
name: Vallecorsa, Sofia
name: Papenbrock, Thomas
Publisher: name: arXiv
Year: 2022
Subjects: subject: Nuclear Theory (nucl-th)
subject: FOS: Physical sciences

description: The variational quantum eigensolver (VQE) is an algorithm to compute ground and excited state energy of quantum many-body systems. A key component of the algorithm and an active research area is the construction of a parametrized trial wavefunction -- a so called variational ansatz. The wavefunction parametrization should be expressive enough, i.e. represent the true eigenstate of a quantum system for some choice of parameter values. On the other hand, it should be trainable, i.e. the number of parameters should not grow exponentially with the size of the system. Here, we apply VQE to the problem of finding ground and excited state energies of the odd-odd nucleus $^6$Li. We study the effects of ordering fermionic excitation operators in the unitary coupled clusters ansatz on the VQE algorithm convergence by using only operators preserving the $J_z$ quantum number. The accuracy is improved by two order of magnitude in the case of descending order. We first compute optimal ansatz parameter values using a classical state-vector simulator with arbitrary measurement accuracy and then use those values to evaluate energy eigenstates of $^6$Li on a superconducting quantum chip from IBM. We post-process the results by using error mitigation techniques and are able to reproduce the exact energy with an error of 3.8% and 0.1% for the ground state and for the first excited state of $^6$Li, respectively.
description: 9 pages, 2 figures, 2 tables
Non-linearities in the Lyman-$α$ forest and in its cross-correlation with dark matter halos
Creators: name: Givans, Jahmour J.
name: Font-Ribera, Andreu
name: Slosar, Anže
name: Seeyave, Louise
name: Pedersen, Christian
name: Rogers, Keir K.
name: Garny, Mathias
name: Blas, Diego
name: Iršič, Vid
Publisher: name: arXiv
Year: 2022
Subjects: subject: Cosmology and Nongalactic Astrophysics (astro-ph.CO)
subject: FOS: Physical sciences

description: Three-dimensional correlations of the Lyman-$α$ (Ly$α$) forest and cross correlations between the Ly$α$ forest and quasars have been measured on large scales, allowing a precise measurement of the baryon acoustic oscillation (BAO) feature at redshifts $z>2$. These 3D correlations are often modelled using linear perturbation theory, but full-shape analyses to extract cosmological information beyond BAO will require more realistic models capable of describing non-linearities present at smaller scales. We present a measurement of the Ly$α$ forest flux power spectrum from large hydrodynamic simulations -- the Sherwood simulations -- and compare it to different models describing the small-scale deviations from linear theory. We confirm that the model presented in Arinyo-i-Prats et al. (2015) fits the measured 3D power up to $k=10\, h\rm{Mpc^{-1}}$ with an accuracy better than 5%, and show that the same model can also describe the 1D correlations with similar precision. We also present, for the first time, an equivalent study for the cross-power spectrum of halos with the Ly$α$ forest, and we discuss different challenges we face when modelling the cross-power spectrum beyond linear scales. We make all our measured power spectra public in \url{https://github.com/andreufont/sherwood_p3d}. This study is a step towards joint analyses of 1D and 3D flux correlations, and towards using the quasar-Ly$α$ cross-correlation beyond BAO analyses.
description: 31 pages, 19 figures
Exploring clinicians' knowledge, beliefs and clinical experiences related to pansexual youth
Creators: name: Pena, Brisa
Publisher: name: No Publisher Supplied
Year: 2020

description: Pansexuality is commonly defined as the emotional, romantic, and/or sexual attraction towards people regardless of their biological sex, gender identity, or gender expression. Literature regarding LGTBQ+ populations has more recently been included in the available research. However, specific subgroups receive much less attention. While there is emerging literature on pansexual youth, no study has explored clinicians’ knowledge and beliefs about pansexuality, including their training and clinical experience relevant to this population. To address this gap, this mixed-methods study investigated what clinicians know about pansexuality and examined the clinical experiences of those who work directly with them. This study was conducted through an anonymous online survey of mental health professionals in the U.S. A preliminary investigation into this area may highlight both the unique stressors affecting pansexual youth and improve upon the therapeutic services provided to this population. Quantitative methods consisted of univariate, bivariate, and multivariate statistics. Results displayed a positive, statistically significant relationship (p = .017) between identified gender and working with pansexual youth. Another linear regression showed that there was a positive, statistically significant relationship (p = .000) between receiving relevant/any training/education and working with pansexual youth. In a third regression, a positive, statistically significant relationship (p = .001) was found between theoretical orientation and working with pansexual youth. Qualitative methods included thematic analyses to gain a deeper understanding of specific ideologies, biases, and knowledge that these clinicians held. Several pertinent themes emerged from the thematic analysis: unique challenges experienced by pansexual youth, working therapeutically with pansexual youth, and therapists’ beliefs and assumptions. The results showcased the need for clinicians to be more mindful of biases, to further their training on sexual minority populations, and for overall advocacy. Clinical implications called for becoming knowledgeable about nonbinary identities, knowing available resources on pansexuality, seeking consultation, and educating others. Future directions necessitate more empirical studies on pansexual youth as well as clinician training. Future research is encouraged to utilize an intersectional lens to understand this population. This dissertation was conducted with the intent of advocating for this unique population.