cometadata/datacite-rtg-text-other-reclassification-records huggingface dataset:
Creating a Large Language Model Application Using Gradio
Creators: name: Brooks, Tyler
Publisher: name: Carnegie Mellon University
Year: 2023
Subjects: Software Engineering

description: Recently, my work required me to rapidly prototype a web application that allows users to query large language models  (LLMs) across three primary use cases: basic question-and-answer, question-and-answer over documents, and document summarization. This work, dubbed the "Mayflower Project," culminated in several significant lessons learned that we have published in our paper A Retrospective in Engineering Large Language Models for National Security. In this post, I share my experience building the different features of Mayflower’s web application and provide step-by-step code so that we can achieve similar results.
EFFECT OF SUPPLY CHAIN MANAGEMENT ON PERFORMANCE IN SELECTED PRIVATE HOSPITALS IN ILORIN, NIGERIA
Creators: name: Gbadeyan, Rotimi A.
name: Boachie-Mensah, Francis O.
name: Osemene, Olubunmi F.
Publisher: name: International Journal of Economic Behavior
Year: 2017

description: There has been increasing Patients’ dissatisfaction about health care service delivery in most private hospitals in Nigeria due to the quality of health care services provided to patients. The objective of this paper is to examine the effect of supply chain management on hospital performance in Ilorin, Nigeria. The quantitative research approach and the descriptive study design were adopted for the study. The simple random sampling method was used to select respondents from ten, out of fifty-eight, private hospitals in Ilorin. The study employed the Partial Least Squares method in the estimation of the Structural Equation Model’s effect in Supply Chain Management (SCM) on Hospital performance. Results indicate that SCM has no strong and direct impact on Hospital performance, but has indirect impact on performance through Competitive Advantage. The paper concludes that an efficient SCM will result in more Patient Satisfaction and better Competitive advantage. It is recommended that Private hospitals should not depend on single suppliers. They should engage more reliable suppliers that would be closer to them for better medical procurement and supplies to be achieved. Classification-JEL: Keywords: supply chain; drugs; private hospitals; patient care; procurement, structural equation model; hospital performance
description: International Journal of Economic Behavior, Vol 7, No 1 (2017): International Journal of Economic Behavior
Newly observed D_{sJ}(3040) and the radial excitations of P-wave charmed-strange mesons
Creators: name: Sun, Zhi-Feng
name: Liu, Xiang
Publisher: name: arXiv
Year: 2009
Subjects: subject: High Energy Physics - Phenomenology (hep-ph)
subject: High Energy Physics - Experiment (hep-ex)
subject: Nuclear Experiment (nucl-ex)
subject: Nuclear Theory (nucl-th)
subject: FOS: Physical sciences

description: Inspired by the newly observed $D_{sJ}(3040)^+$ state, in this work we systemically study the two-body strong decays of P-wave charmed-strange mesons with the first radial excitation. Under the assignment of $1^{+}(j^P=1/2^+)$, i.e. the first radial excitation of $D_{s1}(2460)^+$, we find that the width of $D_{sJ}(3040)^+$ is close to the lower limit of the BaBar measurement. This indicates that it is reasonable to interpret $D_{sJ}(3040)^+$ as the first radial excitation of $D_{s1}(2460)^+$. Our calculation further predicts that $0^-+1^-$ channels e.g. $D^+K^{*0}$, $D^0 K^{*+}$ and $D_s^+ϕ$ are important for the search for $D_{sJ}(3040)^+$. To help future experiments finding the remaining three P-wave charmed-strange mesons with the first radial excitation, we present the predictions for the strong decays of these three P-wave charmed-strange mesons.
description: 13 pages, 7 figures. More discussion added and typos corrected. Accepted by Phys. Rev. D
Polar hairs of mixed-parity nodal superconductors in Rarita-Schwinger-Weyl metals
Creators: name: Mandal, Saswata
name: Roy, Bitan
Publisher: name: arXiv
Year: 2022
Subjects: subject: Superconductivity (cond-mat.supr-con)
subject: Mesoscale and Nanoscale Physics (cond-mat.mes-hall)
subject: Strongly Correlated Electrons (cond-mat.str-el)
subject: High Energy Physics - Theory (hep-th)
subject: FOS: Physical sciences

description: Linearly dispersing Rarita-Schwinger-Weyl (RSW) fermions featuring two Fermi velocities are the key constituents of itinerant spin-3/2 quantum materials. When doped, RSW metals sustain two Fermi surfaces (FSs), around which one fully gapped $s$-wave and five \emph{mixed-parity} local pairings can take place. The intraband components of four mixed-parity pairings support point nodes at the poles of two FSs, only around which long-lived quasiparticles live. For weak (strong) pairing amplitudes ($Δ$), gapless north and south poles belonging to the same (different) FS(s) get connected by \emph{polar hairs}, one-dimensional line nodes occupying the region between two FSs. The remaining one, by contrast, supports four nodal rings in between two FSs, symmetrically placed about their equators, but only when $Δ$ is small. For large $Δ$, this paired state becomes fully gapped. The transition temperature and pairing amplitudes follow the BCS scaling. We explicitly showcase these outcomes for a rotationally symmetric RSW metal, and contrast our findings when the system possesses an enlarged Lorentz symmetry and with those in spin-3/2 Luttinger materials.
description: Published version: 6 Pages, 5 Figures, 1 Table (Supplementary Materials as Ancillary File)
An Instruction Sequence Semigroup with Involutive Anti-Automorphisms
Creators: name: Bergstra, Jan A.
name: Ponse, Alban
Publisher: name: arXiv
Year: 2009
Subjects: subject: Programming Languages (cs.PL)
subject: Rings and Algebras (math.RA)
subject: FOS: Computer and information sciences
subject: FOS: Mathematics
subject: D.3.1; F.3.2; I.1.1

description: We introduce an algebra of instruction sequences by presenting a semigroup C in which programs can be represented without directional bias: in terms of the next instruction to be executed, C has both forward and backward instructions and a C-expression can be interpreted starting from any instruction. We provide equations for thread extraction, i.e., C's program semantics. Then we consider thread extraction compatible (anti-)homomorphisms and (anti-)automorphisms. Finally we discuss some expressiveness results.
description: 36 pages, 1 table
FEMALE ENTREPRENEURS AND INTERGENERATIONAL TRANSFER: NEW INSIGHTS INTO THE SUCCESSION PROCESS
Creators: name: Sentuti, Annalisa
Publisher: name: International Journal of Economic Behavior
Year: 2017

description: This study focuses on the intergenerational transfer from female entrepreneurs to offspring, analysing two Italian cases of succession from mother to son or daughter. The aim is to understand how the succession unfolds when the incumbent is a woman, and whether specific characteristics of women’s style of leadership and management may facilitate the planning and management of the intergenerational transfer. Findings show that the female approach to the succession process is characterised by attention to relationships, cooperation, involvement, communication and sharing in the decision-making process. Moreover, the female approach appears to be more orientated towards a positive perspective of succession. Women entrepreneurs seem to live through the intergenerational transfer much less traumatically, adopting an idea of the physiological continuity of the business and natural turnover between the generations. These characteristics take on particular relevance to its successful outcome and may facilitate the succession process. Classification-JEL: Keywords: women entrepreneurs, female entrepreneurship, women-owned family business, intergenerational transfer, succession process, matriarchal succession
description: International Journal of Economic Behavior, Vol 7, No 1 (2017): International Journal of Economic Behavior
Applying Generative AI to Software Engineering: Navigating Ethical and Educational Landscapes
Creators: name: Robert, John
name: Schmidt, Douglas
Publisher: name: Carnegie Mellon University
Year: 2023
Subjects: Software Engineering

description: The SEI recently hosted a question-and-answer webcast on genrative AI that featured experts from across the SEI answering questions posed by the audience and discussing both the technological advancements and the practical considerations necessary for effective and reliable application of generative AI and large language models (LLMs), such as ChatGPT and Claude. This blog post includes our responses, which have been reordered and edited to enhance the clarity of the original webcast. It is the second of a two-part series - the first installment  focused on applications in software engineering - and explores the broader impacts of generative AI, addressing concerns about the evolving landscape of software engineering and the need for informed and responsible AI use. In particular, we discuss how to navigate the risks and ethical implications of AI-generated code, as well as the impact of generative AI on education, public perception, and future technological advances.
Exploring finger-based solutions for transitioning in reality-virtuality continuum
Creators: name: Das, Satabdi
Publisher: name: University of British Columbia
Year: 2024

description: Head-mounted displays (HMDs) enable users to navigate across the Reality-Virtuality Continuum, allowing them to transition between the Real world, Augmented Reality, Augmented Virtuality, and the Virtual world. Conventional transition methods often require users to press buttons on controllers, manipulate rotary wheels, or tap on the HMDs, potentially disrupting hands-free interaction and immersive experiences. To overcome this limitation, this thesis explores finger-based solutions for navigating between worlds. Through two user studies, I examined various solutions, including hand gestures, double taps on the device, virtual buttons, and a finger-worn button (referred to as FingerButton), for transitioning between worlds. Study results demonstrated that the FingerButton outperformed other techniques regarding speed, accuracy, and user preference. Building upon these findings, I further examined the scalability of such finger-worn solutions across multiple realities. While the FingerButton offers a simple solution with one physical button attached to the finger, navigating between worlds sequentially may be time-consuming. Therefore, different configurations of the FingerButton were explored, such as the 2x2 Button, 2x1 Button, and 4x1 Button, and compared with other finger-worn solutions, including Joystick, Rotary wheel, and Slider, for transitioning in Reality-Virtuality Continuum. The findings revealed that the 2x2 Button configuration emerged as the most effective technique, minimizing trial time and ensuring user comfort. Overall, this research contributes to understanding and improving the interaction techniques for fluid switching between realities, enhancing VR user experiences.
$a_0(980)$-meson twist-2 distribution amplitude within the QCD sum rules and investigation of $D \to a_0(980) (\toηπ) e^+ν_e$
Creators: name: Wu, Zai-Hui
name: Fu, Hai-Bing
name: Zhong, Tao
name: Huang, Dong
name: Hu, Dan-Dan
name: Wu, Xing-Gang
Publisher: name: arXiv
Year: 2022
Subjects: subject: High Energy Physics - Phenomenology (hep-ph)
subject: FOS: Physical sciences

description: In this paper, moments of $a_0(980)$-meson twist-2 light-cone distribution amplitudes were deeply researched by using QCD sum rules approach within background field theory. Up to 9th-order accuracy, we present $\langleξ_{2;a_0}^n\rangle|_{μ_0}$ at the initial scale $μ_0 = 1~{\rm GeV}$, i.e. $\langleξ^1_{2;a_0}\rangle|_{μ_0} = -0.307(43)$, $\langleξ^3_{2;a_0}\rangle|_{μ_0} = -0.181(34)$, $\langleξ^5_{2;a_0}\rangle|_{μ_0} = -0.078(28)$, $\langleξ^7_{2;a_0}\rangle|_{μ_0} = -0.049(26)$, $\langleξ^9_{2;a_0}\rangle|_{μ_0} = -0.036(24)$, respectively. An improved light-cone harmonic oscillator model for $a_0(980)$-meson twist-2 light-cone distribution amplitudes is adopted, where its parameters are fixed by using the least squares method based on the $\langleξ_{2;a_0}^n\rangle|_{μ_0}$, and their goodness of fit reach to $95.4\%$. Then, we calculate the $D\to a_0(980)$ transition form factors within the light-cone sum rules approach, and at largest recoil point, we obtain $f_+^{D\to a_0}(0) = 1.058^{+0.068}_{-0.035}$ and $f_-^{D\to a_0}(0) = 0.764^{+0.044}_{-0.036}$. As a further application, the branching fractions of the $D\to a_0(980)\ell\barν_\ell$ semileptonic decays are given. Taking the decay $a_0(980)\to ηπ$ into consideration, we obtain ${\cal B}(D^0 \to a_0(980)^- (\to ηπ^-) e^+ν_e) =(1.330^{+0.216}_{-0.134})\times10^{-4}$, ${\cal B}(D^+\to a_0(980)^0(\to ηπ^0)e^+ν_e)=(1.675^{+0.272}_{-0.169})\times10^{-4}$, which are consistent with the BESIII collaboration and PDG data within errors. Finally, we present the angle observables of forward-backward asymmetries, $q^2$-differential flat terms and lepton polarization asymmetry of the semileptonic decay $D\to a_0(980)\ell\barν_\ell$.
description: 14 pages, 6 figures, more discussions added, accepted for publication in Nuclear Physics A
Black hole spectroscopy and nonlinear echoes in Einstein-Maxwell-scalar theory
Creators: name: Melis, Marco
name: Corelli, Fabrizio
name: Croft, Robin
name: Pani, Paolo
Publisher: name: arXiv
Year: 2024
Subjects: subject: General Relativity and Quantum Cosmology (gr-qc)
subject: High Energy Astrophysical Phenomena (astro-ph.HE)
subject: High Energy Physics - Phenomenology (hep-ph)
subject: High Energy Physics - Theory (hep-th)
subject: FOS: Physical sciences

description: In the context of Einstein-Maxwell-scalar theory with a nonminimal coupling between the electromagnetic and scalar field, we study linear (non)radial perturbations and nonlinear radial dynamics of spherically symmetric black holes. In a certain region of the parameter space, this theory admits hairy black holes with a stable photon sphere. This has a counterpart in the effective potential of linear perturbations, featuring multiple maxima and minima. The corresponding quasinormal mode spectrum contains long-lived modes trapped in the potential cavity and the time-domain linear response displays echoes, as previously observed for horizonless compact objects. Interestingly, the black-hole dynamics in this theory can be studied at the nonlinear level. By performing fully-fledged 1+1 simulations, we show that echoes are present even when the nonlinearities are significant. To our knowledge, this is the first example of echoes appearing in a consistent theory beyond a linearized analysis. In a follow-up work we will study whether this feature is also present in the post-merger signal from black hole collisions in this theory.
description: 21 pages, 13 figures; v3: published version
Quantum control of a single magnon in a macroscopic spin system
Creators: name: Xu, Da
name: Gu, Xu-Ke
name: Li, He-Kang
name: Weng, Yuan-Chao
name: Wang, Yi-Pu
name: Li, Jie
name: Wang, H.
name: Zhu, Shi-Yao
name: You, J. Q.
Publisher: name: arXiv
Year: 2022
Subjects: subject: Quantum Physics (quant-ph)
subject: FOS: Physical sciences

description: Non-classical quantum states are the pivotal features of a quantum system that differs from its classical counterpart. However, the generation and coherent control of quantum states in a macroscopic spin system remain an outstanding challenge. Here we experimentally demonstrate the quantum control of a single magnon in a macroscopic spin system (i.e., 1~mm-diameter yttrium-iron-garnet sphere) coupled to a superconducting qubit via a microwave cavity. By tuning the qubit frequency {\it in situ} via the Autler-Townes effect, we manipulate this single magnon to generate its non-classical quantum states, including the single-magnon state and the superposition state of a single magnon and vacuum. Moreover, we confirm the deterministic generation of these non-classical states by Wigner tomography. Our experiment offers the first reported deterministic generation of the non-classical quantum states in a macroscopic spin system and paves a way to explore its promising applications in quantum engineering.
description: 6 pages, 4 figures
Ionospheric correction of space radar data
Creators: name: Hapgood, Mike
Publisher: name: arXiv
Year: 2009
Subjects: subject: Space Physics (physics.space-ph)
subject: Plasma Physics (physics.plasm-ph)
subject: Physics and Society (physics.soc-ph)
subject: FOS: Physical sciences

description: Radar is a critical tool for maintaining knowledge of the many ob-jects in low Earth orbit and thus for maintaining confidence that societies around the world are secure against a variety of space-based threats. It is therefore important to raise awareness that LEO objects are embedded in the envelope of relatively dense plasma that co-rotates with the Earth (ionosphere-plasmasphere system) and thus accurate tracking must cor-rect for the group delay and refraction caused by that system. This paper seeks to promote that awareness by reviewing those effects and high-lighting key issues: the need to customise correction to the altitude of the tracked object and prevailing space weather conditions, that ionospheric correction may be particularly important as an object approaches re-entry. The paper outlines research approaches that should lead to better techniques for ionospheric correction and shows how these might be pur-sued in the context of the EURIPOS initiative.
description: Submitted to Acta Geophysica
Hybrid quantum neural network for drug response prediction
Creators: name: Sagingalieva, Asel
name: Kordzanganeh, Mohammad
name: Kenbayev, Nurbolat
name: Kosichkina, Daria
name: Tomashuk, Tatiana
name: Melnikov, Alexey
Publisher: name: arXiv
Year: 2022
Subjects: subject: Quantum Physics (quant-ph)
subject: Artificial Intelligence (cs.AI)
subject: FOS: Physical sciences
subject: FOS: Computer and information sciences

description: Cancer is one of the leading causes of death worldwide. It is caused by a variety of genetic mutations, which makes every instance of the disease unique. Since chemotherapy can have extremely severe side effects, each patient requires a personalized treatment plan. Finding the dosages that maximize the beneficial effects of the drugs and minimize their adverse side effects is vital. Deep neural networks automate and improve drug selection. However, they require a lot of data to be trained on. Therefore, there is a need for machine-learning approaches that require less data. Hybrid quantum neural networks were shown to provide a potential advantage in problems where training data availability is limited. We propose a novel hybrid quantum neural network for drug response prediction, based on a combination of convolutional, graph convolutional, and deep quantum neural layers of 8 qubits with 363 layers. We test our model on the reduced Genomics of Drug Sensitivity in Cancer dataset and show that the hybrid quantum model outperforms its classical analog by 15% in predicting IC50 drug effectiveness values. The proposed hybrid quantum machine learning model is a step towards deep quantum data-efficient algorithms with thousands of quantum gates for solving problems in personalized medicine, where data collection is a challenge.
description: 11 pages, 4 figures, 1 table
Fourth sound of holographic superfluids
Creators: name: Yarom, Amos
Publisher: name: arXiv
Year: 2009
Subjects: subject: High Energy Physics - Theory (hep-th)
subject: FOS: Physical sciences

description: We compute fourth sound for superfluids dual to a charged scalar and a gauge field in an AdS_4 background. For holographic superfluids with condensates that have a large scaling dimension (greater than approximately two), we find that fourth sound approaches first sound at low temperatures. For condensates that a have a small scaling dimension it exhibits non-conformal behavior at low temperatures which may be tied to the non-conformal behavior of the order parameter of the superfluid. We show that by introducing an appropriate scalar potential, conformal invariance can be enforced at low temperatures.
description: 20 pages, 6 figures; removed a discussion on a variant of fourth sound
RELATIONSHIP BETWEEN BOARD STRUCTURE VARIABLES AND PERFORMANCE OF LISTED MANUFACTURING FIRMS IN NIGERIA
Creators: name: Mustapha, Yusuf Ismaila
name: Nafiu, Abdulrasaq Ishola
Publisher: name: International Journal of Economic Behavior
Year: 2017

description: Corporate board structure has been at the center of policy debate concerning their relevance to organisation’s performance in recent times. Since the value creation of corporate governance can be measured through firm performance, this study investigates the relationship between board size, board composition, CEO-duality and performance of listed manufacturing firms in Nigeria. Content analysis was used to collect secondary information from the thirty listed firms that met the requirement for selection as sample between 2006 and 2010 from Nigerian stock exchange Fact Books. Panel data regression techniques were employed as analytical instrument to test the study hypotheses. Findings of the study revealed that board sizes is positively related to ROA but negatively related to ROE performance variables. The study recommends that firms should appoint more of outside directors (NEDs) than inside executive directors to enable it to maximize the benefits of board independence as well maintain a two-tier board structure. Classification-JEL: Keywords: board structure, board size, board composition, ceo-duality, listed manufacturing firms, performance
description: International Journal of Economic Behavior, Vol 7, No 1 (2017): International Journal of Economic Behavior
On the geometry of Lagrangian one-forms
Creators: name: Caudrelier, Vincent
name: Harland, Derek
Publisher: name: arXiv
Year: 2024
Subjects: subject: Mathematical Physics (math-ph)
subject: High Energy Physics - Theory (hep-th)
subject: Symplectic Geometry (math.SG)
subject: Exactly Solvable and Integrable Systems (nlin.SI)
subject: FOS: Physical sciences
subject: FOS: Mathematics

description: Lagrangian multiform theory is a variational framework for integrable systems. In this article we introduce a new formulation which is based on symplectic geometry and which treats position, momentum and time coordinates of a finite-dimensional integrable hierarchy on an equal footing. This formulation allows a streamlined one-step derivation of both the multi-time Euler-Lagrange equations and the closure relation (encoding integrability). We argue that any Lagrangian one-form for a finite-dimensional system can be recast in our new framework. This framework easily extends to non-commuting flows and we show that the equations characterising (infinitesimal) Hamiltonian Lie group actions are variational in character. We reinterpret these equations as a system of compatible non autonomous Hamiltonian equations.
description: 21 pages. Author's accepted version of open access article in Lett Math Phys
Supervisory Control for Dynamic Feature Configuration in Product Lines
Creators: name: Thuijsman, Sander
name: Reniers, Michel
Publisher: name: arXiv
Year: 2022
Subjects: subject: Systems and Control (eess.SY)
subject: Formal Languages and Automata Theory (cs.FL)
subject: FOS: Electrical engineering, electronic engineering, information engineering
subject: FOS: Computer and information sciences

description: In this paper a framework for engineering supervisory controllers for product lines with dynamic feature configuration is proposed. The variability in valid configurations is described by a feature model. Behavior of system components is achieved using (extended) finite automata and both behavioral and dynamic configuration constraints are expressed by means of requirements as is common in supervisory control theory. Supervisory controller synthesis is applied to compute a behavioral model in which the requirements are adhered to. For the challenges that arise in this setting, multiple solutions are discussed. The solutions are exemplified in the CIF toolset using a model of a coffee machine. A use case of the much larger Body Comfort System product line is performed to showcase feasibility for industrial-sized systems.
description: Published open access in ACM TECS (Transactions on Embedded Computing Systems). 26 pages, 6 figures, 20 listings, 2 tables
Structure-aware deep learning model for peptide toxicity prediction
Creators: name: Ebrahimikondori, Hossein
Publisher: name: University of British Columbia
Year: 2024

description: Antimicrobial resistance is a critical public health concern, necessitating the exploration of alternative treatments to conventional antibiotics. Antimicrobial peptides (AMPs) have emerged as a promising avenue to explore such alternatives. However, assessing their toxicity through wet lab methods is time-consuming and costly. Computational tools that accurately predict peptide toxicity may offer a solution by enabling the rapid screening of candidate AMPs. In response to this need, I introduce tAMPer, a multi-modal deep learning model that predicts peptide toxicity by integrating the underlying amino acid sequence composition and the predicted three-dimensional (3D) structure. tAMPer adopts a graph-based representation for peptides, encoding their ColabFold-predicted structures. In these graphs, nodes correspond to amino acids, and edges represent spatial interactions. The model extracts structural features using graph neural networks and employs recurrent neural networks to capture sequential dependencies. tAMPer's performance was assessed on both a publicly available protein toxicity benchmark dataset and an AMP hemolysis data we generated. On the latter, tAMPer achieves an F1-score of 68.7%, surpassing the second-best method with a 45.3% score. On the protein benchmark dataset, tAMPer exhibited an improvement of over 3.0% in the F1-score compared to current state-of-the-art methods. This work highlights the potential of 3D peptide structure predictions and graph neural networks in developing safer peptide therapeutics to combat antimicrobial resistance. tAMPer is freely available at https://github.com/bcgsc/tAMPer.
Velocity Jumps for Molecular Dynamics
Creators: name: Gouraud, Nicolaï
name: Lagardère, Louis
name: Adjoua, Olivier
name: Plé, Thomas
name: Monmarché, Pierre
name: Piquemal, Jean-Philip
Publisher: name: arXiv
Year: 2024
Subjects: subject: Computational Physics (physics.comp-ph)
subject: Chemical Physics (physics.chem-ph)
subject: FOS: Physical sciences

description: We introduce the Velocity Jumps approach, denoted as JUMP, a new class of Molecular dynamics integrators, replacing the Langevin dynamics by a hybrid model combining a classical Langevin diffusion and a piecewise deterministic Markov process, where the expensive computation of long-range pairwise interactions is replaced by a resampling of the velocities at random times. This framework allows for an acceleration in the simulation speed while preserving sampling and dynamical properties such as the diffusion constant. It can also be integrated in classical multi-timestep methods, pushing further the computational speedup, while avoiding some of the resonance issues of the latter thanks to the random nature of jumps. The JUMP, JUMP-RESPA and JUMP-RESPA1 integrators have been implemented in the GPU-accelerated version of the Tinker-HP package and are shown to provide significantly enhanced performances compared to their BAOAB, BAOAB-RESPA and BAOAB-RESPA1 counterparts respectively.
The simulation of non-Hermitian disordered system in linear circuits
Creators: name: Su, Luhong
name: Jiang, Hui
name: Wang, Zhan
name: Chen, Shu
name: Zheng, Dongning
Publisher: name: arXiv
Year: 2022
Subjects: subject: Disordered Systems and Neural Networks (cond-mat.dis-nn)
subject: FOS: Physical sciences

description: Non-Hermitian skin effect (NHSE) is a novel phenomenon appearing in non-Hermitian systems. Here, we report the experimental observation of NHSE. Different from the previous non-reciprocal circuit implementation scheme using logic components, we construct our one-dimensional (1D) circuits using linear components only. Besides, we achieve the non-reciprocity by proportionally varying the parameter value of the components. By measuring the voltage response of each site, the information of eigenstates can be mapped out. The results show that the voltage response is always larger on one end of the circuit no matter on which end voltage driving is applied, indicating clearly the presence of the NHSE. Furthermore, we also simulate the interplay of NHSE and Anderson localization (AL) when additional disorder is introduced. Upon increasing the disorder strength, we observe the transformation from the skin effect phase to the localized phase. In the regime of skin effect phase, the eigenstates are all localized at one edge while eigenstates are affected by the voltage supply input in localized phase. Our findings unveil a possible new route for simulation of topological phenomena in non-Hermitian systems.
description: 10 pages, 4 figures and 2 tables
Editorial
Creators: name: Kowalik, Izabela
name: Danik, Lidia
Publisher: name: International Journal of Economic Behavior
Year: 2018

description: In this issue of the International Journal of Economic Behavior several topics are presented promoting learning and contributing later to the creation of a new knowledge in the economic behavior and management field. Classification-JEL: Keywords: Learning, Kowledge creation, Economic behavior, Management.
description: International Journal of Economic Behavior, Vol 8, No 1 (2018): International Journal of Economic Behavior
Magnetotransport of Dirac Fermions on the surface of a topological insulator
Creators: name: Mondal, S.
name: Sen, D.
name: Sengupta, K.
name: Shankar, R.
Publisher: name: arXiv
Year: 2010
Subjects: subject: Strongly Correlated Electrons (cond-mat.str-el)
subject: FOS: Physical sciences

description: We study the properties of Dirac fermions on the surface of a topological insulator in the presence of crossed electric and magnetic fields. We provide an exact solution to this problem and demonstrate that, in contrast to their counterparts in graphene, these Dirac fermions allow relative tuning of the orbital and Zeeman effects of an applied magnetic field by a crossed electric field along the surface. We also elaborate and extend our earlier results on normal metal-magnetic film-normal metal (NMN) and normal metal-barrier-magnetic film (NBM) junctions of topological insulators [Phys. Rev. Lett. {\bf 104}, 046403 (2010)]. For NMN junctions, we show that for Dirac fermions with Fermi velocity $v_F$, the transport can be controlled using the exchange field ${\mathcal J}$ of a ferromagnetic film over a region of width $d$. The conductance of such a junction changes from oscillatory to a monotonically decreasing function of $d$ beyond a critical ${\mathcal J}$ which leads to the possible realization of magnetic switches using these junctions. For NBM junctions with a potential barrier of width $d$ and potential $V_0$, we find that beyond a critical ${\mathcal J}$, the criteria of conductance maxima changes from $χ= e V_0 d/\hbar v_F = n π$ to $χ= (n+1/2)π$ for integer $n$. Finally, we compute the subgap tunneling conductance of a normal metal-magnetic film-superconductor (NMS) junctions on the surface of a topological insulator and show that the position of the peaks of the zero-bias tunneling conductance can be tuned using the magnetization of the ferromagnetic film. We point out that these phenomena have no analogs in either conventional two-dimensional materials or Dirac electrons in graphene and suggest experiments to test our theory.
description: 11 pages, 12 figures; v1
Operator Space theory: a natural framework for Bell inequalities
Creators: name: Junge, M.
name: Palazuelos, C.
name: Perez-Garcia, D.
name: Villanueva, I.
name: Wolf, M. M.
Publisher: name: arXiv
Year: 2009
Subjects: subject: Quantum Physics (quant-ph)
subject: FOS: Physical sciences

description: In this letter we show that the field of Operator Space Theory provides a general and powerful mathematical framework for arbitrary Bell inequalities, in particular regarding the scaling of their violation within quantum mechanics. We illustrate the power of this connection by showing that bipartite quantum states with local Hilbert space dimension n can violate a Bell inequality by a factor of order $\frac{\sqrt{n}}{\log^2n}$ when observables with n possible outcomes are used. Applications to resistance to noise, Hilbert space dimension estimates and communication complexity are given.
description: Short (non-technical) version of arXiv:0910.4228
Maximum entropy freezeout of hydrodynamic fluctuations
Creators: name: Pradeep, Maneesha Sushama
name: Stephanov, Mikhail
Publisher: name: arXiv
Year: 2022
Subjects: subject: High Energy Physics - Phenomenology (hep-ph)
subject: High Energy Physics - Theory (hep-th)
subject: Nuclear Theory (nucl-th)
subject: FOS: Physical sciences

description: We propose a general approach to freezing out fluctuations in heavy-ion collisions using the principle of maximum entropy. We find the results naturally expressed as a direct relationship between the irreducible relative correlators quantifying the deviations of hydrodynamic as well as hadron gas fluctuations from the ideal hadron gas baseline. The method also allows us to determine heretofore unknown parameters crucial for the freezeout of fluctuations near the QCD critical point in terms of the QCD equation of state.
description: 7 pages, minor edits, references added, version accepted by PRL
Managing Changes into International Markets. Flexible Structures and Knowledge Sharing for Firm Competitiveness
Creators: name: Silvestrelli, Patrizia
Publisher: name: International Journal of Economic Behavior
Year: 2018

description: This paper focuses on the analysis of organizational flexibility as one of the most important prerequisites to implement business strategies, particularly at international level. Turbulent and endless changes into international environments, high competition, innovation technology development, and consumer shifting towards new needs and behaviors lead companies in finding appropriate strategies to remain competitive. This implies to look continuously for better solutions to structure organizations, manage people, and improve knowledge. Flexible structures allow not only to faster adapt to ever-changing business needs, but also to facilitate information exchange and – when required – modify working procedures and people behaviors. However, any process of organizational change is onerous and finds obstacles to be implemented. Change requires top managers and subordinates involvement, in terms of their comprehension and acceptance of business choices; in this way, they can concretely support innovation. The role of infra-firm communication is here crucial since it represents the vehicle through which change can occur and people can acquire, create and diffuse knowledge. This is the base for developing new strategies and making the firm grows. However, the effort for modifying organizational assets is an endless process. Market forces as well as economic, political and social variations obligate companies to change and readjust their internal resources in order to remain competitive or even to survive. Classification-JEL: Keywords: International environment; Organizational flexibility; Change management; Infra-organization communication; Knowledge improvement.
description: International Journal of Economic Behavior, Vol 8, No 1 (2018): International Journal of Economic Behavior
Listen, Denoise, Action! Audio-Driven Motion Synthesis with Diffusion Models
Creators: name: Alexanderson, Simon
name: Nagy, Rajmund
name: Beskow, Jonas
name: Henter, Gustav Eje
Publisher: name: arXiv
Year: 2022
Subjects: subject: Machine Learning (cs.LG)
subject: Computer Vision and Pattern Recognition (cs.CV)
subject: Graphics (cs.GR)
subject: Human-Computer Interaction (cs.HC)
subject: Sound (cs.SD)
subject: Audio and Speech Processing (eess.AS)
subject: FOS: Computer and information sciences
subject: FOS: Electrical engineering, electronic engineering, information engineering
subject: G.3; I.2.6; I.3.7; J.5
subject: 68T07

description: Diffusion models have experienced a surge of interest as highly expressive yet efficiently trainable probabilistic models. We show that these models are an excellent fit for synthesising human motion that co-occurs with audio, e.g., dancing and co-speech gesticulation, since motion is complex and highly ambiguous given audio, calling for a probabilistic description. Specifically, we adapt the DiffWave architecture to model 3D pose sequences, putting Conformers in place of dilated convolutions for improved modelling power. We also demonstrate control over motion style, using classifier-free guidance to adjust the strength of the stylistic expression. Experiments on gesture and dance generation confirm that the proposed method achieves top-of-the-line motion quality, with distinctive styles whose expression can be made more or less pronounced. We also synthesise path-driven locomotion using the same model architecture. Finally, we generalise the guidance procedure to obtain product-of-expert ensembles of diffusion models and demonstrate how these may be used for, e.g., style interpolation, a contribution we believe is of independent interest. See https://www.speech.kth.se/research/listen-denoise-action/ for video examples, data, and code.
description: 20 pages, 9 figures. Published in ACM ToG and presented at SIGGRAPH 2023
Additional file 2 of Adipokine chemerin overexpression in trophoblasts leads to dyslipidemia in pregnant mice: implications for preeclampsia
Creators: name: Tan, Lunbo
name: Ouyang, Zijun
name: Chen, Zhilong
name: Sun, Fen
name: Guo, Haichun
name: Wang, Feng
name: Mulder, Monique
name: Sun, Yuan
name: Lu, Xifeng
name: Zhang, Jian V.
name: Danser, A. H. Jan
name: Verdonk, Koen
name: Fan, Xiujun
name: Yang, Qing
Publisher: name: figshare
Year: 2023
Subjects: subject: Biochemistry
subject: Cell Biology
subject: Genetics
subject: FOS: Biological sciences
subject: Molecular Biology
subject: Physiology
subject: Pharmacology
subject: Chemical Sciences not elsewhere classified
subject: Mathematical Sciences not elsewhere classified
subject: Developmental Biology

description: Additional file 2.
Dual models for p-form mimetic gravity and their connection to perfect fluids consisting of (p+1)-branes
Creators: name: Ilin, R. V.
name: Paston, S. A.
Publisher: name: arXiv
Year: 2022
Subjects: subject: General Relativity and Quantum Cosmology (gr-qc)
subject: High Energy Physics - Theory (hep-th)
subject: FOS: Physical sciences

description: We propose an approach that allows one to reformulate $n$-dimensional $p$-form mimetic gravity (including usual mimetic gravity as particular case $p = 0$) as nonlinear $(n-p-1)$-form electrodynamics via electric-magnetic duality. The resulting dual Lagrangian density is just the square root of the ordinary quadratic Lagrangian density of $(n-p-1)$-form electrodynamics. By applying field transformation in the action, we show that for the arbitrary $p$ this dual theory transforms into the $(p+1)$-brane fluid: the model of the stack of the parallel $(p+1)$-dimensional branes foliating physical spacetime. As the structure of the field transformations depends on $p$, the sets of solutions in these models are related differently. We prove, that for $p = 0$ and $p = n-2$ dual mimetic models describe usual particle fluid with the potential flow and to the $(n-1)$-brane fluid respectively. For other values of $p$ not all mimetic solutions behave like that, in general, so we restrict ourselves only to the case $n = 4$, $p = 1$. In this case, we show, that mimetic formulation is dual to the well-known Nielsen-Olesen theory of "dual strings" and discuss the criterion indicating whether its solutions behave like string fluid. The cosmological solutions for these models in are also discussed.
description: 9 pages, published version
The Limited Consumer Rationality and the Role of Environmental Cues
Creators: name: Bălău, Mădălina
Publisher: name: International Journal of Economic Behavior
Year: 2018

description: The ideal of rational consumer rests on the assumption that individuals already hold perfect information and consumer behavior results from the preferences based on this information. Today, consumers enjoy access to more information than ever before, but, on the other hand, they frequently reach decisions with limited deliberation. With its flow of information, does the age of the Internet encourage the ideal of consumer rationality? Our aim is to explore the role of social influences and environmental cues on consumer online behavior and to derive implications for improving our understanding of online behaviors. Research findings on influence tactics highlight an increasing importance of social cues in assessing online information, while experiments in social psychology reveal the role of unconscious processes in automatically activating attitudes and behaviors. We discuss implications for developing our understanding of online consumer behavior and advancements necessary for consumer research. Classification-JEL: Keywords: Consumer rationality; Online behavior; Social proof; Influence tactics; Consumer decision-making; Limited deliberation
description: International Journal of Economic Behavior, Vol 8, No 1 (2018): International Journal of Economic Behavior
Matter-wave dark solitons: stochastic vs. analytical results
Creators: name: Cockburn, S. P.
name: Nistazakis, H. E.
name: Horikis, T. P.
name: Kevrekidis, P. G.
name: Proukakis, N. P.
name: Frantzeskakis, D. J.
Publisher: name: arXiv
Year: 2009
Subjects: subject: Quantum Gases (cond-mat.quant-gas)
subject: Other Condensed Matter (cond-mat.other)
subject: FOS: Physical sciences

description: The dynamics of dark matter-wave solitons in elongated atomic condensates are discussed at finite temperatures. Simulations with the stochastic Gross-Pitaevskii equation reveal a noticeable, experimentally observable spread in individual soliton trajectories, attributed to inherent fluctuations in both phase and density of the underlying medium. Averaging over a number of such trajectories (as done in experiments) washes out such background fluctuations, revealing a well-defined temperature-dependent temporal growth in the oscillation amplitude. The average soliton dynamics is well captured by the simpler dissipative Gross-Pitaevskii equation, both numerically and via an analytically-derived equation for the soliton center based on perturbation theory for dark solitons.
description: 4 pages, 3 figures. Added several references
Development Policies for Lagging Behind Areas: An Interpretative Note in the Name of Civil Entrepreneurial Development
Creators: name: Esposito, Gaetano Fausto
Publisher: name: International Journal of Economic Behavior
Year: 2018

description: This paper is a part of the critical literature of the neoclassical approach to regional development policies and on the role of trust and social norms in defining growth processes. It also adds the role of entrepreneurial capacity in stimulating development processes, by creating a virtuous circle, according to a civil approach to economic dynamics. Starting from the limits of the standard economic paradigm in contributing to the reduction of regional development gaps, the article will deal with regional development issues, focusing on the role of trust and the developing entrepreneurship, with an approach that starts from the concept of civil economy, based on the institutional sustainability of innovative forms of development policy. Finally, a scheme for civil entrepreneurship development, based on trust, will be presented. Classification-JEL: Keywords: Regional development policies; Trust; Entrepreneurial capacity; Civil economy, Institutional sustainability
description: International Journal of Economic Behavior, Vol 8, No 1 (2018): International Journal of Economic Behavior
Colloidal Gelation with Non-Sticky Particles
Creators: name: Jiang, Yujie
name: Seto, Ryohei
Publisher: name: arXiv
Year: 2022
Subjects: subject: Soft Condensed Matter (cond-mat.soft)
subject: FOS: Physical sciences

description: Colloidal gels are widely applied in industry due to their rheological character -- no flow takes place below the yield stress. Such property enables gels to maintain uniform distribution in practical formulations; otherwise, solid components may quickly sediment without the support of gel matrix. Compared with pure gels of sticky colloids, therefore, the composites of gel and non-sticky inclusions are more commonly encountered in reality. Through numerical simulations, we investigate the gelation process in such binary composites. We find that the non-sticky particles not only confine gelation in the form of an effective volume fraction, but also introduce another lengthscale that competes with the size of growing clusters in gel. The ratio of two key lengthscales in general controls the two effects. Using different gel models, we verify such a scenario within a wide range of parameter space, suggesting a potential universality in all classes of colloidal composites.
Unterricht planen. Ausbildung – Mentorat Sekundarstufe I. Bausteinheft 4. Studienplan SP21
Creators: name: Egli, Christoph
name: Goldsmith, Daniel
name: Hürlimann, Werner
name: Lipp, Erich
name: Luthiger, Herbert
name: Marti, Stephan
name: Roth, Hans
name: Sutermeister, Rose
name: Walt, Marianne
name: Wespi, Claudia
name: Widmer, Peter
name: Wildhirt, Susanne
Publisher: name: Zenodo
Year: 2023
Subjects: Pädagogik
Methodik
Didaktik
Sekundarstufe
Lernkontrolle
Leistungsbeurteilung
Bewerten
Beurteilungskompetenz
Diagnosekompetenz
Noten
Förderung
Zeugnis
OER
Open Educational Resources
Lehrpläne
Sachanalyse
Begründungsanalyse
Kompetenzförderndes Aufgabenset
Unterrichtsevaluation

description: Die in der Ausbildung von Lehrpersonen an der PH Luzern eingesetzten Bausteinhefte sind ein wichtiges Bindeglied zwischen der berufspraktischen Ausbildung in den Praxisschulen und den Lehrveranstaltungen an der Hochschule. Sie legen den Grundstein für eine gemeinsame Sprache zwischen Studierenden, Dozierenden und Praxislehrpersonen.
Das Bausteinheft 4 ist in zwei Teile gegliedert. Im ersten Teil (Bausteine 1 bis 6) geht es darum, eine Orientierung zu geben hinsichtlich der Erwartungen, die seitens der PH Luzern an die Studierenden des Studiengangs Sekundarstufe I in Bezug auf die Unterrichtsplanung gestellt werden. Die Bausteine im ersten Teil sind grundsätzlicher Art.
Der zweite Teil des Bausteinheftes (Bausteine 7 bis 13) ist der Darstellung von ausgewählten Unterrichtsmethoden gewidmet, die in der Praxis häufig zum Einsatz kommen.
Das Planen von Unterrichtseinheiten erfordert einerseits die Fähigkeit, eine angestrebte Kompetenzentwicklung der Schülerinnen und Schüler in der Unterrichtsvorbereitung antizipieren zu können. Dazu braucht es fachbezogenes Wissen und Können in Bezug auf die Zielsetzungen, die in den Lehrplänen vorgegeben sind. Genauso wichtig sind jedoch ihre pädagogisch-didaktischen Kompetenzen, um Lehrplanvorgaben didaktisch analysieren, strukturieren und begründen zu können, dies mit dem Ziel, herausfordernde und sinnvolle Aufgabenstellungen auszuwählen oder zu entwickeln, die den beabsichtigen Lernprozess fördern.
description: + ID der Publikation: phlu_18506 + Art des Beitrages: Andere Lehr-/Lernmaterialien + Sprache: Deutsch + Bemerkungen: Diese Publication 18506 ersetzt https://doi.org/10.5281/zenodo.5607045
Bei Fragen: jolanda.felder@phlu.ch + Letzte Aktualisierung: 2024-02-07 14:58:30