cometadata/datacite-rtg-text-other-reclassification-records huggingface dataset:
Burgers turbulence in the Fermi-Pasta-Ulam-Tsingou chain
Creators: name: Gallone, Matteo
name: Marian, Matteo
name: Ponno, Antonio
name: Ruffo, Stefano
Publisher: name: arXiv
Year: 2022
Subjects: subject: Statistical Mechanics (cond-mat.stat-mech)
subject: Mathematical Physics (math-ph)
subject: Exactly Solvable and Integrable Systems (nlin.SI)
subject: FOS: Physical sciences

description: We prove analytically and show numerically that the dynamics of the Fermi-Pasta-Ulam-Tsingou chain is characterised by a transient Burgers turbulence regime on a wide range of time and energy scales. This regime is present at long wavelengths and energy per particle small enough that equipartition is not reached on a fast time scale. In this range, we prove that the driving mechanism to thermalisation is the formation of a shock that can be predicted using a pair of generalised Burgers equations. We perform a perturbative calculation at small energy per particle, proving that the energy spectrum of the chain $E_k$ decays as a power law, $E_k\sim k^{-ζ(t)}$, on an extensive range of wavenumbers $k$. We predict that $ζ(t)$ takes first the value $8/3$ at the Burgers shock time, and then reaches a value close to $2$ within two shock times. The value of the exponent $ζ=2$ persists for several shock times before the system eventually relaxes to equipartition. During this wide time-window, an exponential cut-off in the spectrum is observed at large $k$, in agreement with previous results. Such a scenario turns out to be universal, i.e. independent of the parameters characterising the system and of the initial condition, once time is measured in units of the shock time.
description: accepted for publication on Physical Review Letters; 6 pages + Supplemental Material. 4 Figures; corrected a typo in the second equation of Supplemental Materials
Infidelity in Couples Seeking Marital Therapy.
Creators: name: Atkins, David
name: Baucom, Donald
name: Yi, Jean
name: Christensen, Andrew
Publisher: name: The University of North Carolina at Chapel Hill University Libraries
Year: 2005

description: The revelation of an affair is often an emotionally explosive event for a couple, yet little is known about specific individual and relationship factors that accompany infidelity. The present study examined the qualities of individuals and couples that differentiate couples with (n = 19) and without (n = 115) infidelity using couples from a randomized clinical trial of marital therapy. Findings indicated that couples with infidelity showed greater marital instability, dishonesty, arguments about trust, narcissism, and time spent apart. Gender also proved to be a significant moderator of several effects. Men who had participated in affairs showed increased substance use, were older, and were more sexually dissatisfied. Results offer initial clues to concomitants of affairs for couple therapists.
Quantitative isoperimetric inequalities in H^n
Creators: name: Franceschi, Valentina
name: Leonardi, Gian Paolo
name: Monti, Roberto
Publisher: name: arXiv
Year: 2015
Subjects: subject: Optimization and Control (math.OC)
subject: Metric Geometry (math.MG)
subject: FOS: Mathematics

description: In the Heisenberg group H^n, we prove quantitative isoperimetric inequalities for Pansu's spheres, that are known to be isoperimetric under various assumptions. The inequalities are shown for suitably restricted classes of competing sets and the proof relies on the construction of sub-calibrations.
Working life competences that matter for the newly graduated: Views of recruiters in the domain of knowledge work
Creators: name: Ramström, Joachim
name: Helle, Laura
Publisher: name: ETH Learning and Teaching Journal
Year: 2020

description: Working life and the structure of work is undergoing an evolution. Many companies are reporting recruitment problems related to deficits in working life competences. Much of the research into working life competences remains theoretical and prescriptive. Furthermore, different typologies of working life competences tend to abstract the notion of competence to such a degree that it becomes meaningless. The purpose of this study is to shed light on the views of the people in charge of making recruitment decisions by asking what working life competences that are deemed essential when recruiting new higher education institution (HEI) graduates in the domain of knowledge work. We are also aiming to get a better understanding of what meaning recruitment specialists give to important working life competences.
description: ETH Learning and Teaching Journal, Vol. 2 No. 2 (2020): Special issue: ICED 2020 proceedings
Identifying influential spreaders in complex networks based on gravity formula
Creators: name: Ma, Ling-Ling
name: Ma, Chuang
name: Zhang, Hai-Feng
name: Wang, Bing-Hong
Publisher: name: arXiv
Year: 2015
Subjects: subject: Physics and Society (physics.soc-ph)
subject: Social and Information Networks (cs.SI)
subject: FOS: Physical sciences
subject: FOS: Computer and information sciences

description: How to identify the influential spreaders in social networks is crucial for accelerating/hindering information diffusion, increasing product exposure, controlling diseases and rumors, and so on. In this paper, by viewing the k-shell value of each node as its mass and the shortest path distance between two nodes as their distance, then inspired by the idea of the gravity formula, we propose a gravity centrality index to identify the influential spreaders in complex networks. The comparison between the gravity centrality index and some well-known centralities, such as degree centrality, betweenness centrality, closeness centrality, and k-shell centrality, and so forth, indicates that our method can effectively identify the influential spreaders in real networks as well as synthetic networks. We also use the classical Susceptible-Infected-Recovered (SIR) epidemic model to verify the good performance of our method.
description: 4 tables and 4 figures, accepted by Physica A
Design of Deployable Shelters for Emergency Response
Creators: name: Pantazis, Georgios D.
Publisher: name: Zenodo
Year: 2022

description: The need for the design and implementation of deployable shelters stems from the necessity for the rapid erection of a temporary structure, in order to house human activities or services. These constructions are particularly useful in cases of emergency, such as natural or man-made disasters, for the temporary accommodation of the affected, or the provision of rehabilitation services to them. In this thesis, a deployable cylindrical canopy with internal dimensions of 6.00x5.72m plan view, and a maximum internal height of 3.00m, whose structural system consists of scissor - like elements, was studied. The main object of the study was the design of the scissor elements, and the steel joints between them. Due to the complexity presented by the connections between the scissor elements, and the eccentricities introduced into the static system due to their cross-sections, and the dimensions of the joints, the design of the structure was carried out in three stages. Initially, the design of the scissor - like elements was carried out through Nonlinear Geometry and Material Analysis (GMNA), in the ADINA software [5]. The scissor elements were simulated using linear beam finite elements, while rigid links between the scissor elements were considered, which were added into the simulation through the software's constraint equations. During this stage, it was considered necessary to simulate a bracing system through small diameter cable elements, to receive external loads in the longitudinal direction of the roof, due to the flexibility of the structure in this direction. Subsequently, the influence of geometric imperfections on the structural system behaviour was investigated through Nonlinear Geometry and Material Analysis with Imperfections (GMNIA). The necessary buckling modes, obtained from previous Linear Buckling Analyses, were used as an initial imperfection shape. Finally, the simulation of three steel joints, through surface finite elements in a cruciform arrangement, and the simulation of the connection bolts through linear beam finite elements were carried out, and their influence on the behaviour of the structure, in relation to the original simulation, was discussed.
Batched bandit problems
Creators: name: Perchet, Vianney
name: Rigollet, Philippe
name: Chassang, Sylvain
name: Snowberg, Erik
Publisher: name: arXiv
Year: 2015
Subjects: subject: Statistics Theory (math.ST)
subject: FOS: Mathematics

description: Motivated by practical applications, chiefly clinical trials, we study the regret achievable for stochastic bandits under the constraint that the employed policy must split trials into a small number of batches. We propose a simple policy, and show that a very small number of batches gives close to minimax optimal regret bounds. As a byproduct, we derive optimal policies with low switching cost for stochastic bandits.
description: Published at http://dx.doi.org/10.1214/15-AOS1381 in the Annals of Statistics (http://www.imstat.org/aos/) by the Institute of Mathematical Statistics (http://www.imstat.org)
The fractional $p\,$-biharmonic systems: optimal Poincaré constants, unique continuation and inverse problems
Creators: name: Kar, Manas
name: Railo, Jesse
name: Zimmermann, Philipp
Publisher: name: arXiv
Year: 2022
Subjects: subject: Analysis of PDEs (math.AP)
subject: Functional Analysis (math.FA)
subject: FOS: Mathematics
subject: 35R30 (Primary) 26A33, 42B37 (Secondary)

description: This article investigates nonlocal, fully nonlinear generalizations of the classical biharmonic operator $(-Δ)^2$. These fractional $p$-biharmonic operators appear naturally in the variational characterization of the optimal fractional Poincaré constants in Bessel potential spaces. We study the following basic questions for anisotropic fractional $p$-biharmonic systems: existence and uniqueness of weak solutions to the associated interior source and exterior value problems, unique continuation properties (UCP), monotonicity relations, and inverse problems for the exterior Dirichlet-to-Neumann maps. Furthermore, we show the UCP for the fractional Laplacian in all Bessel potential spaces $H^{t,p}$ for any $t\in \mathbb{R}$, $1 \leq p < \infty$ and $s \in \mathbb{R}_+ \setminus \mathbb{N}$: If $u\in H^{t,p}(\mathbb{R}^n)$ satisfies $(-Δ)^su=u=0$ in a nonempty open set $V$, then $u\equiv 0$ in $\mathbb{R}^n$. This property of the fractional Laplacian is then used to obtain a UCP for the fractional $p$-biharmonic systems and plays a central role in the analysis of the associated inverse problems. Our proofs use variational methods and the Caffarelli-Silvestre extension.
description: 31 pages
Reaching intercultural speakers of Spanish as a second language with a new curriculum design
Creators: name: Potvin, Cynthia
Publisher: name: ETH Learning and Teaching Journal
Year: 2020

description: In order to better prepare our Spanish as a second language (SL2) university students to be intercultural speakers (Cervantes Institute, 2007) and to ready them for the intercultural realities of the job market, we are currently internationalizing our curricula. Following the approach of Chávez and Longerbeam (2016) regarding interculturality, we are developing a cultural grammar (Sánchez Pérez, 2009; Guillén, 2016). In this paper, we present the basic concepts and definitions of our approach and conclude by highlighting three characteristics present in our intercultural in-class activities.
description: ETH Learning and Teaching Journal, Vol. 2 No. 2 (2020): Special issue: ICED 2020 proceedings
Building inclusive and anti-racist futures: Reimagining higher education for a world in flux
Creators: name: Patel, Chandani
Publisher: name: ETH Learning and Teaching Journal
Year: 2020

description: What skills and knowledge will “future-ready graduates” need to meet the challenges of a world in flux? How must traditional forms of education be reimagined to meet the needs of an increasingly diverse student population? How can we as individuals practice critical self- reflection about our own positionalities so that we can meaningfully engage in conversations across difference? This essay will examine the future of higher education through the lens of equity, inclusion, and anti-racism as a response to these questions and to demonstrate the collective responsibility we share in preparing students for an uncertain and ever-changing world.
description: ETH Learning and Teaching Journal, Vol. 2 No. 2 (2020): Special issue: ICED 2020 proceedings
title: Evaluating the feasibility of prison officers delivering a guided self-help programme for stress to adult male offenders serving a long-term prison sentence and Clinical Research Portfolio
Creators: name: Lai, Jennifer
Publisher: name: University of Glasgow
Year: 2020
Subjects: subject: Prisoners, anxiety, depression, guided self-help, Prison Officers.

description: Background: Prisoners have substantial mental health needs. Prisoners should have access to healthcare of the same standard as non-prisoners and CBT-based self-help is recommended for anxiety and depression in non-prisoners. Living Life To The Full (LLTTF) is a CBT-based approach that has been demonstrated to reduce anxiety and depression in non-prisoners. Aims: To evaluate the feasibility of Prison Officers providing guided self-help support to adult male offenders experiencing stress. Method: Prison Officers and prisoners in HMP Shotts were invited to participate. Prison Officers completed LLTTF training and met prisoners individually for four sessions of LLTTF. Prisoners completed measures of anxiety, depression, and perceived functioning. This was supplemented by questionnaires completed by Personal Officers, work attendance, and breaches of prison rules. Feedback about LLTTF was collected from prisoners and Prison Officers. Results: Six Prison Officers (6%) attended staff training and two (33%) withdrew prior to prisoner recruitment. 6% (n=15) of prisoners invited to take part volunteered and were eligible. Seven completed LLTTF. A large effect size was associated with depression self-ratings pre- to post-treatment. Pre-treatment anxiety reduced at Week 4 and increased at post-treatment, which reflects deterioration in a minority. Feedback from Prison Officers and prisoners indicated LLTTF materials require adaptation for prison. Prison Officers highlighted practical barriers to delivery, including limited resources. Conclusions: Guided self-help in prison is worth pursuing. Revision of materials with Prison Officers and prisoners is recommended, and piloted prior to future research. Designated guided self-help workers may be better placed to deliver LLTTF due to practical barriers reported by Prison Officers.
Low regularity theory for the inverse fractional conductivity problem
Creators: name: Railo, Jesse
name: Zimmermann, Philipp
Publisher: name: arXiv
Year: 2022
Subjects: subject: Analysis of PDEs (math.AP)
subject: Functional Analysis (math.FA)
subject: FOS: Mathematics
subject: 35R30 (Primary) 26A33, 42B37, 46F12 (Secondary)

description: We characterize partial data uniqueness for the inverse fractional conductivity problem with $H^{s,n/s}$ regularity assumptions in all dimensions. This extends the earlier results for $H^{2s,\frac{n}{2s}}\cap H^s$ conductivities by Covi and the authors. We construct counterexamples to uniqueness on domains bounded in one direction whenever measurements are performed in disjoint open sets having positive distance to the domain. In particular, we provide counterexamples in the special cases $s \in (n/4,1)$, $n=2,3$, missing in the literature due to the earlier regularity conditions. We also give a new proof of the uniqueness result which is not based on the Runge approximation property. Our work can be seen as a fractional counterpart of Haberman's uniqueness theorem for the classical Calderón problem with $W^{1,n}$ conductivities when $n=3,4$. One motivation of this work is Brown's conjecture that uniqueness for the classical Calderón problem holds for $W^{1,n}$ conductivities also in dimensions $n \geq 5$.
description: 30 pages
“Universities just pretend that getting that piece of paper is all you need, like they are selling ice cream.” Supporting diverse graduates to achieve post-graduation goals
Creators: name: O’Shea, Sarah
name: Delahunty, Janine
name: Groves, Olivia
Publisher: name: ETH Learning and Teaching Journal
Year: 2020

description: Internationally, new complexities and permutations have emerged in the world of work: employment is no longer stable or strictly demarcated by graduate and non-graduate work; unsecured and entrepreneurial economies are prevalent. Despite this, an expectation persists in the higher education (HE) sector that educational access will result in positive post-graduate outcomes regardless of prior educational or social disadvantage. This paper explores how students from a range of diverse backgrounds navigate post-graduation landscapes and the issues/obstacles they reported during this journey. Drawn from an analysis of large-scale Australian quantitative data and qualitative data from 268 alumni (O’Shea, 2019), recommendations are made for how the global community can honour difference and support all graduates to be “future-ready”.
description: ETH Learning and Teaching Journal, Vol. 2 No. 2 (2020): Special issue: ICED 2020 proceedings
Latest Oligocene adakitic rocks in western Iran: implications for early crustal thickening and tectonic evolution of Iran Block
Creators: name: Liu, Yi-Xin
name: Chen, Jian-Lin
name: Yang, Tian-Nan
name: Hou, Zeng-Qian
name: Zhang, Hong-Rui
name: Yang, Zhi-Ming
name: Yang, Zhu-Sen
name: Aghazadeh, Mehraj
name: Xu, Ji-Feng
Publisher: name: Geological Society of London
Year: 2022
Subjects: subject: Geology
subject: FOS: Earth and related environmental sciences

description: Supplementary Table 1
Agency Conflicts in Closed-End Funds: The Case of Rights Offerings
Creators: name: Wahal, Sunil
name: Khorana, Ajay
name: Zenner, Marc
Publisher: name: The University of North Carolina at Chapel Hill University Libraries
Year: 2002

description: We study 120 rights offerings by closed-end funds over 1988-1998. On average, rights offerings are announced when funds trade at a premium. This premium turns into a discount over the course of the offering. The premium decline is more severe when the increases in investment advisor’s compensation are larger and when the fund uses affiliated broker-dealers to solicit subscriptions to the offer. A clinical analysis shows that rights offerings allow investment advisors to sidestep fee rebates and increase pecuniary benefits to affiliated entities. Overall, our results suggest the presence of significant conflicts of interests in rights offerings by closed-end funds.
Large-Sample Properties of Non-Stationary Source Separation for Gaussian Signals
Creators: name: Bachoc, François
name: Muehlmann, Christoph
name: Nordhausen, Klaus
name: Virta, Joni
Publisher: name: arXiv
Year: 2022
Subjects: subject: Statistics Theory (math.ST)
subject: Methodology (stat.ME)
subject: Machine Learning (stat.ML)
subject: FOS: Mathematics
subject: FOS: Computer and information sciences

description: Non-stationary source separation is a well-established branch of blind source separation with many different methods. However, for none of these methods large-sample results are available. To bridge this gap, we develop large-sample theory for NSS-JD, a popular method of non-stationary source separation based on the joint diagonalization of block-wise covariance matrices. We work under an instantaneous linear mixing model for independent Gaussian non-stationary source signals together with a very general set of assumptions: besides boundedness conditions, the only assumptions we make are that the sources exhibit finite dependency and that their variance functions differ sufficiently to be asymptotically separable. The consistency of the unmixing estimator and its convergence to a limiting Gaussian distribution at the standard square root rate are shown to hold under the previous conditions. Simulation experiments are used to verify the theoretical results and to study the impact of block length on the separation.
Datenbiographik im Literaturarchiv - Konzept und Umsetzung digitaler Dienste am Theodor-Fontane-Archiv
Creators: name: Seifert, Sabine
name: Busch, Anna
name: Trilcke, Peer
name: Genzel, Kristina
name: Heilmann, Juliane
name: Möller, Klaus-Peter
Publisher: name: Zenodo
Year: 2022
Subjects: Archiv
Datenbiographik
Metadaten
digitale Dienste
Chronik
Kulturdaten
Veröffentlichung
Bibliographie
Literatur
virtuelle Forschungsumgebungen
DHd2022

description: Eine Posterpräsentation auf der 8. Tagung des Verbands "Digital Humanities im deutschsprachigen Raum" - DHd 2022 Kulturen des digitalen Gedächtnisses.
Regularizing Neural Network Training via Identity-wise Discriminative Feature Suppression
Creators: name: Chapman, Avraham
name: Liu, Lingqiao
Publisher: name: arXiv
Year: 2022
Subjects: subject: Computer Vision and Pattern Recognition (cs.CV)
subject: Artificial Intelligence (cs.AI)
subject: Machine Learning (cs.LG)
subject: FOS: Computer and information sciences

description: It is well-known that a deep neural network has a strong fitting capability and can easily achieve a low training error even with randomly assigned class labels. When the number of training samples is small, or the class labels are noisy, networks tend to memorize patterns specific to individual instances to minimize the training error. This leads to the issue of overfitting and poor generalisation performance. This paper explores a remedy by suppressing the network's tendency to rely on instance-specific patterns for empirical error minimisation. The proposed method is based on an adversarial training framework. It suppresses features that can be utilized to identify individual instances among samples within each class. This leads to classifiers only using features that are both discriminative across classes and common within each class. We call our method Adversarial Suppression of Identity Features (ASIF), and demonstrate the usefulness of this technique in boosting generalisation accuracy when faced with small datasets or noisy labels. Our source code is available.
description: DICTA 2022
Stock Market Uncertainty and the Stock-Bond Return Relation
Creators: name: Sun, Licheng
name: Stivers, Chris
name: Connolly, Robert
Publisher: name: The University of North Carolina at Chapel Hill University Libraries
Year: 2005

description: We examine whether time-variation in the co-movements of daily stock and Treasury bond returns can be linked to non-return-based measures of stock market uncertainty, specifically the implied volatility from equity index options and detrended stock turnover. From a forward-looking perspective, we find a negative relation between the uncertainty measures and the future correlation of stock and bond returns. From a contemporaneous perspective, we find that bond returns tend to be high (low), relative to stock returns, during days when implied volatility increases (decreases) substantially and during days when stock turnover is unexpectedly high (low). Our findings suggest that stock market uncertainty has important cross-market pricing influences and that stock-bond diversification benefits increase with stock market uncertainty
The expected number of critical percolation clusters intersecting a line segment
Creators: name: Berg, Jacob van den
name: Conijn, Rene
Publisher: name: arXiv
Year: 2015
Subjects: subject: Probability (math.PR)
subject: FOS: Mathematics
subject: 60K35 (Primary), 82B43 (Secondary)

description: We study critical percolation on a regular planar lattice. Let $E_G(n)$ be the expected number of open clusters intersecting or hitting the line segment $[0,n]$. (For the subscript $G$ we either take $\mathbb{H}$, when we restrict to the upper halfplane, or $\mathbb{C}$, when we consider the full lattice). Cardy (2001) (see also Yu, Saleur and Haas (2008)) derived heuristically that $E_{\mathbb{H}}(n) = An + \frac{\sqrt{3}}{4π}\log(n) + o(\log(n))$, where $A$ is some constant. Recently Kovács, Iglói and Cardy (2012) derived heuristically (as a special case of a more general formula) that a similar result holds for $E_{\mathbb{C}}(n)$ with the constant $\frac{\sqrt{3}}{4π}$ replaced by $\frac{5\sqrt{3}}{32π}$. In this paper we give, for site percolation on the triangular lattice, a rigorous proof for the formula of $E_{\mathbb{H}}(n)$ above, and a rigorous upper bound for the prefactor of the logarithm in the formula of $E_{\mathbb{C}}(n)$.
description: Final version, appeared in Elect.Comm.Probab. 21 (2016)
PhD support beyond teaching: The need to communicate effectively in (research) writing
Creators: name: McAlpine, Lynn
Publisher: name: ETH Learning and Teaching Journal
Year: 2020

description: PhD writing support is not typically something that academic developers have engaged in, so I begin by describing why I think this is something we should consider doing. I then explain the research basis for the suite of research writing workshops which we have piloted in an Erasmus+ grant (https://www.researcher-identity.com/), as well as their general design, and examples of slides and handouts for three workshops. I end by considering the value of integrating support for PhD writing into broader academic development offerings. My hope is that you will be convinced of the value of taking up this idea in order to enhance PhD progress and potentially graduates’ supervisory and teaching practices if they take up academic posts.
description: ETH Learning and Teaching Journal, Vol. 2 No. 2 (2020): Special issue: ICED 2020 proceedings
The Genome Sequence of Citrus Melanose Pathogen Diaporthe citri and Two Citrus related Diaporthe species
Creators: name: Yunpeng Gai
name: Xiong, Tao
name: Xiaoe Xiao
name: Pudong Li
name: Yating Zeng
name: Li, Lei
name: Riely, Brendan K.
name: Hongye Li
Publisher: name: figshare
Year: 2020
Subjects: subject: 70308 Crop and Pasture Protection (Pests, Diseases and Weeds)
subject: FOS: Agriculture, forestry and fisheries

description: The melanose diseases is one the most widespread and economically important fungal diseases of citrus worldwide. The causative agent is filamentous fungus Diaporthe citri Wolf (syn. Phomopsis citri H.S. Fawc.). Here, we report genome assemblies of three strains of D. citri, namely strains ZJUD2, ZJUD14 and Q7, generated using a combination of PacBio Sequel long-read and Illumina paired-end sequencing data. The assembled genomes of D. citri ranged 53,972,068 bp to 63,637,472 bp in genome size, containing 15,977 ~ 16,622 protein-coding genes. In addition, the genome sequences of two Citrus related Diaporthe species, namely D. citriasiana and D. citrichinensis, were assembled and annotated. The described genome sequences and annotations can provide a useful resource in the study of fungal biology, pathogen-host interaction, molecular diagnostic marker development, and population genomic analyses of Citrus-related Diaporthe species.
Theorising the boundary condition between psychological capital and graduate employability: Does grit matter?
Creators: name: Mashod, Hartini
name: Kura, Kabiru Maitama
name: Ringim, Kabiru Jinjiri
Publisher: name: ETH Learning and Teaching Journal
Year: 2020

description: The construct of graduate employability (GE) has received considerable attention from researchers and practitioners because of its crucial role in national economic agendas. Previous research is mixed in terms of the association between psychological capital (PsyCap) and GE. This represents a significant theoretical gap in the literature. To address this knowledge gap and better understand the relationship, we proposed grit as the potential “moderator” between PsyCap and GE. By incorporating grit as moderator, this paper aims to contribute to concept and theory development in the field of educational management. The paper provides valuable insights that support the notion that PsyCap and grit acquisition enhance GE.
description: ETH Learning and Teaching Journal, Vol. 2 No. 2 (2020): Special issue: ICED 2020 proceedings
Stability estimates for the inverse fractional conductivity problem
Creators: name: Covi, Giovanni
name: Railo, Jesse
name: Tyni, Teemu
name: Zimmermann, Philipp
Publisher: name: arXiv
Year: 2022
Subjects: subject: Analysis of PDEs (math.AP)
subject: Functional Analysis (math.FA)
subject: FOS: Mathematics
subject: Primary 35R30, Secondary 26A33, 42B37, 46F12

description: We study the stability of an inverse problem for the fractional conductivity equation on bounded smooth domains. We obtain a logarithmic stability estimate for the inverse problem under suitable a priori bounds on the globally defined conductivities. The argument has three main ingredients: 1. the logarithmic stability of the related inverse problem for the fractional Schrödinger equation by Rüland and Salo; 2. the Lipschitz stability of the exterior determination problem; 3. utilizing and identifying nonlocal analogies of Alessandrini's work on the stability of the classical Calderón problem. The main contribution of the article is the resolution of the technical difficulties related to the last mentioned step. Furthermore, we show the optimality of the logarithmic stability estimates, following the earlier works by Mandache on the instability of the inverse conductivity problem, and by Rüland and Salo on the analogous problem for the fractional Schrödinger equation.
description: 34 pages
Peer tutoring programme as a student academic development strategy in a selected university of technology
Creators: name: Makwara, Cephas
Publisher: name: ETH Learning and Teaching Journal
Year: 2020

description: Quality education is one of the main aims of sustainable development goals (SDGs). It can be achieved when the quality of teachers being produced is appropriate and these teachers are adaptable, agile and competitive in their areas of expertise. Providing future-ready graduate teachers is one way to enable attainment of this goal. This paper expresses the need for a repositioned tutorial programme for the School of Education, a department in the University of Technology (UoT). The study is located in an interpretive paradigm and utilised a qualitative approach where interviews and focus group discussions were the main data collection instruments. The paper explores the questionof how first years experienced peer tutoring. Sound structures need to be put in place to facilitate the goals of peer tutoring, including seeing to it that learning spaces are available; that the correct number of students attend each tutorial; and that a proper timetable is drawn up and adhered to.
description: ETH Learning and Teaching Journal, Vol. 2 No. 2 (2020): Special issue: ICED 2020 proceedings
Inclusion and employability: Supporting all students to become future-ready graduates through the curriculum
Creators: name: Manoharan, Aranee
Publisher: name: ETH Learning and Teaching Journal
Year: 2020

description: Whilst the notion of inclusive curriculum has become increasingly important in UK higher education (Hockings, 2010), employability is still a neglected aspect of this discussion in most non-vocational disciplines, as it continues to be perceived as a secondary concern of the university, predominantly addressed through extra-curricular activity rather than being an integral aspect of teaching and learning. This paper argues that it is critical for these two areas to be considered together through the curriculum design process to best serve the increasingly diverse student population accessing higher education today. The paper will discuss how we can support all students to become future-ready graduates and reflect upon a post-1992 university’s journey towards achieving this by integrating employability within the curriculum.
description: ETH Learning and Teaching Journal, Vol. 2 No. 2 (2020): Special issue: ICED 2020 proceedings
Fast time-domain current measurement for quantum dot charge sensing using a homemade cryogenic transimpedance amplifier
Creators: name: Bohuslavskyi, Heorhii
name: Hashisaka, Masayuki
name: Shimizu, Takase
name: Akiho, Takafumi
name: Muraki, Koji
name: Kumada, Norio
Publisher: name: arXiv
Year: 2022
Subjects: subject: Mesoscale and Nanoscale Physics (cond-mat.mes-hall)
subject: FOS: Physical sciences

description: We developed a high-speed and low-noise time-domain current measurement scheme using a homemade GaAs high-electron-mobility-transistor-based cryogenic transimpedance amplifier (TIA). The scheme is versatile for broad cryogenic current measurements, including semiconductor spin-qubit readout, owing to the TIA's having low input impedance comparable to that of commercial room-temperature TIAs. The TIA has a broad frequency bandwidth and a low noise floor, with a trade-off between them governed by the feedback resistance $R_{FB}$. A lower $R_{FB}$ of 50 k$Ω$ enables high-speed current measurement with a -3dB cutoff frequency $f_{-3dB}$ = 28 MHz and noise-floor $NF = 8.5 \times 10^{-27}$ A$^{2}$/Hz, while a larger $R_{FB}$ of 400 k$Ω$ provides low-noise measurement with $NF = 1.0 \times 10^{-27}$ A$^{2}$/Hz and $f_{-3dB}$ = 4.5 MHz. Time-domain measurement of a 2-nA peak-to-peak square wave, which mimics the output of the standard spin-qubit readout technique via charge sensing, demonstrates a signal-to-noise ratio (SNR) of 12.7, with the time resolution of 48 ns, for $R_{FB}$ = 200 k$Ω$, which compares favorably with the best-reported values for the radio-frequency (RF) reflectometry technique. The time resolution can be further improved at the cost of the SNR (or vice versa) by using an even smaller (larger) $R_{FB}$, with a further reduction in the noise figure possible by limiting the frequency band with a low-pass filter. Our scheme is best suited for readout electronics for cryogenic sensors that require a high time resolution and current sensitivity and thus provides a solution for various fundamental research and industrial applications.
description: Main text: 9 pages, 4 figures. Supplementary material: 4 pages, 5 figures
VLBI observation of the newly discovered z=5.18 quasar SDSS J0131-0321
Creators: name: Gabanyi, K. E.
name: Cseh, D.
name: Frey, S.
name: Paragi, Z.
name: Gurvits, L. I.
name: An, T.
name: Zhang, Y. K.
Publisher: name: arXiv
Year: 2015
Subjects: subject: High Energy Astrophysical Phenomena (astro-ph.HE)
subject: Astrophysics of Galaxies (astro-ph.GA)
subject: FOS: Physical sciences

description: Few high-redshift, radio-loud quasars are known to date. The extremely luminous, radio-bright quasar, SDSS J013127.34-032100.1 was recently discovered at a redshift of $z=5.18$. We observed the source with high resolution very long baseline interferometry (VLBI) at 1.7 GHz with the European VLBI Network (EVN) and found a single compact radio component. We estimated a lower limit to the brightness temperature of the detected radio component, T_B~10^{11} K. Additionaly, when compared to archival radio data, the source showed significant flux density variation. These two findings are indicative of the blazar nature of the source.
description: 5 pages, 2 figures. Accepted for publication in MNRAS Letters
Pre-empting academic misconduct and improving learning outcomes with a teaching and learning approach – A preliminary report
Creators: name: Li, Dongmei
Publisher: name: ETH Learning and Teaching Journal
Year: 2020

description: This article reports on a preliminary analysis of Integrated Academic Success (IAS), an academic development program embedded in subject teaching for a humanities postgraduate degree involving a large number of international students at a major university in Australia. It was found that integrating academic skill development in subject teaching improved academic integrity and learning outcomes significantly in a course with a large number of students without relevant prior disciplinary or educational experience. The findings might inform curriculum development in postgraduate courses where students have no prior educational experience in the relevant discipline or academic context.
description: ETH Learning and Teaching Journal, Vol. 2 No. 2 (2020): Special issue: ICED 2020 proceedings
Corporate Governance, Finance, and the Real Sector
Creators: name: Fulghieri, Paolo
name: Suominen, Matti
Publisher: name: The University of North Carolina at Chapel Hill University Libraries
Year: 2012

description: This paper presents a theory of the linkages between corporate governance, corporate finance and the real sector of an economy. We examine a model of industry equilibrium with endogenous entry. We show that poor corporate governance and low investor protection generates less competitive economies, populated by firms with more insider ownership and greater leverage. The quality of the corporate governance system can also affect an economy's industrial structure: better corporate governance promotes the development of sectors more exposed to moral hazard, such as the high-technology industry. We also show that entrepreneurs may have a preference for "extreme" corporate governance systems, where the quality of corporate governance and the level of investor protection are either very high or very low. This suggests that entrepreneurs operating in economies endowed with a corporate governance system of low-quality may have little or no incentive to seek (or to lobby for) an improvement of the governance system of their economy. Finally we show that financial liberalizations facilitate firm entry and the adoption of more productive technologies, promoting economic growth. Our stylized model generates predictions that are consistent with several observed empirical regularities.
Market reaction to public information: The atypical case of the Boston Celtics
Creators: name: Brown, Gregory
name: Hartzell, Jay
Publisher: name: The University of North Carolina at Chapel Hill University Libraries
Year: 2001

description: The publicly-traded Boston Celtics Limited Partnership shares provide a unique means of studying the impact of information on equity prices. The results of the Celtics’ basketball games significantly affect partnership share returns, trading volume, and volatility. Controlling for the expected value of the signal using betting-market point spreads has little effect on these relations. Investors respond asymmetrically to wins and losses, and playoff games have a larger impact on returns than regular-season games. Because Celtics’ games occur exclusively when the market is closed, we are able to analyze if game information is incorporated into prices during market closures. Opening prices do not fully reflect game results. This is consistent with the conclusions of previous research that significant volatility is caused by traders acting on private information.
TARBIYA JARAYONINI TASHKIL ETISHDA O'QITUVCHINING KREATIV YONDASHUVI
Creators: name: Karamatova, Dilfuza
name: Mahmudova, Niginabonu
Publisher: name: Zenodo
Year: 2025

description: Mazkur maqolada tarbiya jarayonini tashkil etishda o‘qituvchining kreativ yondashuvi muhim omil sifatida yoritilgan. Kreativ yondashuv o‘quvchilarning faolligini oshirish, ularni ijtimoiy hayotga tayyorlash, mustaqil fikrlash va ijodkorlik salohiyatini rivojlantirishga xizmat qilishi ta’kidlangan. Shuningdek, individual yondashuv, zamonaviy texnologiyalardan foydalanish, ota-onalar bilan hamkorlik va o‘qituvchining doimiy izlanishda bo‘lishi orqali tarbiyaviy ishlarning samaradorligini oshirish yo‘llari ko‘rib chiqilgan. Maqola tarbiyaviy faoliyatda yangilikka intiluvchi pedagoglar uchun foydali bo‘lishi mumkin.
Exclusive Radiative Higgs Decays as Probes of Light-Quark Yukawa Couplings
Creators: name: Koenig, Matthias
name: Neubert, Matthias
Publisher: name: arXiv
Year: 2015
Subjects: subject: High Energy Physics - Phenomenology (hep-ph)
subject: FOS: Physical sciences

description: We present a detailed analysis of the rare exclusive Higgs-boson decays into a single vector meson and a photon and investigate the possibility of using these processes to probe the light-quark Yukawa couplings. We work with an effective Lagrangian with modified Higgs couplings to account for possible new-physics effects in a model-independent way. The h->Vγ decay rate is governed by the destructive interference of two amplitudes, one of which involves the Higgs coupling to the quark anti-quark pair inside the vector meson. We derive this amplitude at next-to-leading order in α_s using QCD factorization, including the resummation of large logarithmic corrections and accounting for the effects of flavor mixing. The high factorization scale μ~m_h ensures that our results are rather insensitive to the hadronic parameters characterizing the light-cone distribution amplitude of the vector meson. The second amplitude arises from the loop-induced effective hγγ* and hγZ* couplings, where the off-shell gauge boson converts into the vector meson. We devise a strategy to eliminate theoretical uncertainties related to this amplitude to almost arbitrary precision. This opens up the possibility to probe for O(1) modifications of the c- and b-quark Yukawa couplings and O(30) modifications of the s-quark Yukawa coupling in the high-luminosity LHC run. In particular, we show that measurements of the ratios Br(h->Υ(nS)γ)/Br(h->γγ) and Br(h->bb)/Br(h->γγ) can provide complementary information on the real and imaginary parts of the b-quark Yukawa coupling. More accurate measurements would be possible at a future 100 TeV proton-proton collider.
description: 25 pages plus appendices, 9 figures, 5 tables; v2: NLO evolution of Gegenbauer moments implemented in Appendix B, some references added; v3: typo in the value of C_{\gamma Z}(0) after eq. (35) fixed
Tutoring of young people with disabilities: Experiential learning that prepares tutors for an inclusive professional and civic perspective
Creators: name: Husson, Lionel
Publisher: name: ETH Learning and Teaching Journal
Year: 2020

description: CentraleSupélec is a leading French engineering school which addresses disability with a global perspective and strategy. It has set up a mentoring programme for young people with disabilities. Its aims are multiple: to help disabled young people, through tutoring, to promote their access to higher education and their projection towards a professional project linked to their motivations; and to prepare CentraleSupélec students, as tutors, for diversity issues, while developing their adaptability, responsibility and managerial skills more generally. In addition to fostering the satisfaction and progress of those tutored, the tutors’ feedback and progress illustrate how the confrontation with disability changes their personal perspectives and prepares them to take into account this singularity in their professional lives.
description: ETH Learning and Teaching Journal, Vol. 2 No. 2 (2020): Special issue: ICED 2020 proceedings
Chemical evolution in the early phases of massive star formation II: Deuteration
Creators: name: Gerner, Th.
name: Shirley, Y.
name: Beuther, H.
name: Semenov, D.
name: Linz, H.
name: Abertsson, T.
name: Henning, Th.
Publisher: name: arXiv
Year: 2015
Subjects: subject: Astrophysics of Galaxies (astro-ph.GA)
subject: FOS: Physical sciences

description: The chemical evolution in high-mass star-forming regions is still poorly constrained. Studying the evolution of deuterated molecules allows to differentiate between subsequent stages of high-mass star formation regions due to the strong temperature dependence of deuterium isotopic fractionation. We observed a sample of 59 sources including 19 infrared dark clouds, 20 high-mass protostellar objects, 11 hot molecular cores and 9 ultra-compact HII regions in the (3-2) transitions of the four deuterated molecules, DCN, DNC, DCO+ and N2D+ as well as their non-deuterated counterpart. The overall detection fraction of DCN, DNC and DCO+ is high and exceeds 50% for most of the stages. N2D+ was only detected in a few infrared dark clouds and high-mass protostellar objects. It can be related to problems in the bandpass at the frequency of the transition and to low abundances in the more evolved, warmer stages. We find median D/H ratios of ~0.02 for DCN, ~0.005 for DNC, ~0.0025 for DCO+ and ~0.02 for N2D+. While the D/H ratios of DNC, DCO+ and N2D+ decrease with time, DCN/HCN peaks at the hot molecular core stage. We only found weak correlations of the D/H ratios for N2D+ with the luminosity of the central source and the FWHM of the line, and no correlation with the H2 column density. In combination with a previously observed set of 14 other molecules (Paper I) we fitted the calculated column densities with an elaborate 1D physico-chemical model with time-dependent D-chemistry including ortho- and para-H2 states. Good overall fits to the observed data have been obtained the model. It is one of the first times that observations and modeling have been combined to derive chemically based best-fit models for the evolution of high-mass star formation including deuteration.
description: 26 pages, 16 figures, accepted at A&A
On the Efficiency of Energy Markets with Non-Merchant Storage
Creators: name: Frölke, Linde
name: Prat, Eléa
name: Pinson, Pierre
name: Lusby, Richard M.
name: Kazempour, Jalal
Publisher: name: arXiv
Year: 2022
Subjects: subject: Optimization and Control (math.OC)
subject: FOS: Mathematics

description: Energy market designs with non-merchant storage have been proposed in recent years, with the aim of achieving optimal market integration of storage. In order to handle the time-linking constraints that are introduced in such markets, existing works commonly make simplifying assumptions about the end-of-horizon storage level, e.g., by imposing an exogenous level for the amount of energy to be left for the next time horizon. This work analyzes market properties under such assumptions, as well as in their absence. We find that, although they ensure cost recovery for all market participants, these assumptions generally lead to market inefficiencies. Therefore we consider the design of markets with non-merchant storage without such simplifying assumptions. Using illustrative examples, as well as detailed proofs, we provide conditions under which market prices in subsequent market horizons fail to reflect the value of stored energy. We show that this problem is essential to address in order to preserve market efficiency and cost recovery. Finally, we propose a method for restoring these market properties in a perfect-foresight setting.
title: Diaphragmatic mesothelial cyst
Creators: name: Skok , Tadeja
Publisher: name: EURORAD
Year: 2022
Subjects: subject: Abdominal imaging
subject: Abdomen
subject: Anatomy
subject: CT
subject: Ultrasound
subject: Clinical Cases

description: Clinical History: A 62-year-old female was referred to our department for follow-up imaging after surgical treatment of lung adenocarcinoma. She had a right lower lobe lobectomy without adjuvant therapy in April 2020, and there have been no signs of metastatic disease or recurrence since. CT imaging studies demonstrated a cystic lesion under the diaphragm with initial diagnosis of a simple hepatic cyst. The final diagnosis was made after additional imaging studies and ruling out conditions with similar radiologic features. 

description: 62 years, female
An Approach to Development: Turning Education from a Service Duty to a Productive Tool
Creators: name: Alinian, Pooya
name: Mohammadi, Raziyeh
name: Parvaneh, Azadeh
name: Rejali, Ali
Publisher: name: arXiv
Year: 2022
Subjects: subject: History and Overview (math.HO)
subject: FOS: Mathematics

description: Recent economic developments of countries like Japan, Korea, and Singapore, as a result of improvement in the quality of their education, show that having a high-quality education may lead to economic growth. In this article, using some statistical methods, we argue that high quality education can change the economy towards higher growth. Therefore, for the development of the country, one should think about how to improve its education. One of the effective ways to improve the quality of education is to increase the efficiency of teachers and attract talented people to teaching positions. Research shows that raising teachers' salaries, along with a proper quality improvement program, can help facilitate this process.