cometadata/datacite-rtg-text-other-reclassification-records huggingface dataset:
Evolution of precision amplifiers Slides
Creators: Qinwen Fan
Publisher: name: IEEE
Year: 2022

Webinar Slides
Abstract: Precision amplifiers are essential blocks for many measurement systems, where offset and flicker noise must be significantly suppressed. Dynamic offset cancellation techniques such as chopping, auto-zeroing, and correlated double sampling are often employed to suppress offset and flicker noise. However, these techniques could introduce some "side-effects" such as noise folding, increased input current, decreased input impedance, intermodulation distortion, etc., which should be addressed properly. In this lecture, an overview of dynamic offset cancellation techniques will be given, followed by the techniques to mitigate the non-idealities introduced by dynamic offset cancellation techniques. Examples of application-specific precision amplifiers will be studied as well.

Biography: Qinwen Fan received her Ph.D. degree from the Delft University of Technology in 2013. From October 2012 to May 2015, she worked at Maxim Integrated in Delft, The Netherlands. From June 2015 to January 2017, she worked at Mellanox (currently known as Nvidia) in Delft, the Netherlands. Since 2017, she rejoined the Delft University of Technology and is currently an Assistant professor in the electronics and instrumentation laboratory.
Her current research interests include precision analog, current sensing, class D audio amplifiers, DC-DC converters, and autonomous wireless sensor nodes.
Dr. Fan serves as an associate editor of Open Journal of the Solid-State Circuits Society (OJ-SSCS), a TPC member of the International Solid-State Circuits Conference (ISSCC), the VLSI symposium, and the European Solid-state circuits conference (ESSCIRC). She also serves as a distinguished lecturer for the solid-state circuit society.
Limnocoris bruchi De Carlo 1967
Creators: name: Moreira, Felipe Ferraz Figueiredo
name: Barbosa, Julianna Freires
name: Ribeiro, José Ricardo Inacio
name: Alecrim, Viviani Pereira
Publisher: name: Zenodo
Year: 2011
Subjects: Biodiversity
Taxonomy
Animalia
Arthropoda
Insecta
Hemiptera
Naucoridae
Limnocoris
Limnocoris bruchi

description: Limnocoris bruchi De Carlo, 1967
Geographical distribution: Brazil.
Distribution in Brazil: North Region (AM) (De Carlo 1967; Pereira & Melo 2007).
Comments: Nieser and López-Ruf (2001) associated De Carlos’ citation of “Barra do São Manoel” with MT, not AM. The material originally examined by De Carlo was collected by Dr. Sioli, and the locality above is specifically associated with AM in Sioli (2007).
description: Published as part of Moreira, Felipe Ferraz Figueiredo, Barbosa, Julianna Freires, Ribeiro, José Ricardo Inacio & Alecrim, Viviani Pereira, 2011, Checklist and distribution of semiaquatic and aquatic Heteroptera (Gerromorpha and Nepomorpha) occurring in Brazil 2958, pp. 1-74 in Zootaxa 2958 (1) on page 45, DOI: 10.11646/zootaxa.2958.1.1, http://zenodo.org/record/5281851
On the distribution function of suprathermal particles at collisionless shocks
Creators: name: Arbutina, Bojan
name: Zekovic, Vladimir
Publisher: name: arXiv
Year: 2021
Subjects: subject: Plasma Physics (physics.plasm-ph)
subject: High Energy Astrophysical Phenomena (astro-ph.HE)
subject: FOS: Physical sciences

description: The departure of particle distributions from the Maxwellian is commonly observed in space plasmas. These non-Maxwellian distributions which are typical for plasmas that are not in thermal equilibrium, can be modeled with $κ$-distribution. Kinetic simulations of quasi-parallel collisionless shocks show that proton distribution is a composite of thermal, suprathermal, and non-thermal parts. By using particle-in-cell shock simulations, we show that $κ$-distribution adequately fits thermal and suprathermal parts together, as a single continuous distribution in early proton spectra. We derive suprathermal proton distribution directly from the generalized entropy of non-extensive statistical mechanics, and show that thermal and suprathermal populations are both naturally embedded in $κ$-distribution. We find that the index $κ$ of the distribution increases with the distance from the shock, following the decrease in suprathermal part. The non-equilibrium plasma distribution which is continuously being enriched with suprathermal particles at the reforming shock barrier, reaches the thermal equilibrium in the far downstream. The suprathermal part completely fades there, and the shape of proton distribution becomes a Maxwellian from which directly emerges a power-law.
description: Accepted for publication in Journal of High Energy Astrophysics. 8 pages, 3 figures
The targum (1897:May 5 - 1897:May 19)
Creators: name: No Name Supplied
Publisher: name: Targum Association
Year: 1897

description: Some University historians indicate that the Targum was first published as an annual in 1867, but of this we have no extant evidence. In January 1869, the Targum as we now know it, made its appearance as a monthly paper that concerned itself with student “literary contributions” and college news as well as serving as a vehicle for bringing news to alumni and the general public. The newspaper, which originally was for sale, varied in frequency over the years as did its title (The Targum, Rutgers Targum, Rutgers Daily Targum, and Daily Targum). The newspaper has continuously been published since 1869 with the exception of 19 months during the second world war, between February 1944 and October 1945. The Targum was published by the students of Rutgers College, and later Rutgers University—New Brunswick represented through the years as the Targum Association, Rutgers Targum Association, and Rutgers College Targum. As a student organization, the Targum operated under the oversight of the dean of students and student government but in October 1980, the Targum became an independent college paper.
The structural and magnetic properties of (In1-xFex)2O3 (0.0 <= x <= 0.25) system : prepared by gel combustion method
Creators: name: Jayakumar, O. D.
name: Gopalakrishnan, I. K.
name: Kulshreshtha, S. K.
name: Gupta, Amita
name: Rao, K. V.
name: Louzguine, D.
name: Inoue, Akihisa
name: Glans, P.
name: Guo, Jinghua
name: Samanta, Kousik
name: Singh, M. K.
name: Katiyar, R. S.
Publisher: name: arXiv
Year: 2007
Subjects: subject: Materials Science (cond-mat.mtrl-sci)
subject: FOS: Physical sciences

description: (In1-xFex)2O3 polycrystalline samples with x = (0.0, 0.05, 0.10, 0.15, 0.20 and 0.25) have been synthesized by a gel combustion method. Reitveld refinement analysis of X raydiffraction data indicated the formation of single phase cubic bixbyite structure without any parasitic phases. This observation is further confirmed by high resolution transmission electron microscopy (HRTEM) imaging, and indexing of the selected-area electron diffraction (SAED) patterns, X-ray Absorption Spectroscopy (XAS) and Raman Spectroscopy. DC Magnetization studies as a function of temperature and field indicatethat they are ferromagnetic with Curie temperature (TC) well above room temperature.
description: 9 pages 3 figures
Detecting Large Frequency Excursions in the Power Grid With Bayesian Decision Theory
Creators: Amanda Lenzi
Julie Bessac
and Mihai Anitescu
Publisher: name: IEEE
Year: 2022

The first goal of this paper was to present models for producing realistic probabilistic prediction of large excursions in the power grid frequency at multiple locations. The second goal was to develop and evaluate a framework that uses the probabilistic predictions in conjunction with a loss function to suggest optimal decisions concerning the expected loss.
Disturbances in power systems, such as a generator trip, affect the frequency and voltage of the power grid. A framework that enables anticipating potentially dangerous frequency excursions (as signs of the disturbance start to reach sensors) is crucial to allow the operator more time to maintain or improve the electrical system's reliability. We propose statistical models for anticipating disturbances in the frequency response at several locations simultaneously, and we quantify the risk of a frequency excursion. After probabilistic forecasts of the power grid frequency are obtained, a Bayesian decision framework is developed to issue real-time event recommendations based on actions that minimize the risk over some loss functions predefined by stakeholders. A case study with real-time monitored data from the FNET/GridEye system shows that the traditional autoregressive models underestimate the uncertainty, leading to high chances of missing a rapid frequency drop. On the other hand, this case study reveals the value of including spatial dependence in the model. The proposed spatiotemporal model better captures the uncertainty and significantly increases the probability of identifying large frequency excursions. Results show that the spatiotemporal model can significantly reduce risks for the system operator as it consistently indicates lower costs than the ones from classical models for a wide range of loss functions.
Toward simple "in silico" experiments for drugs administration in some cancer treatments
Creators: name: Fliess, Michel
name: Join, Cédric
name: Moussa, Kaouther
name: Djouadi, Seddik M.
name: Alsager, Mohamed W.
Publisher: name: arXiv
Year: 2021
Subjects: subject: Systems and Control (eess.SY)
subject: Optimization and Control (math.OC)
subject: FOS: Electrical engineering, electronic engineering, information engineering
subject: FOS: Mathematics
subject: J.3
subject: 92C42, 93B52

description: We present some "in silico" experiments to design combined chemo- and immunotherapy treatment schedules. We introduce a new framework by combining flatness-based control, which is a model-based setting, along with model-free control. The flatness property of the used mathematical model yields straightforward reference trajectories. They provide us with the nominal open-loop control inputs. Closing the loop via model-free control allows to deal with the uncertainties on the injected drug doses. Several numerical simulations illustrating different case studies are displayed. We show in particular that the considered health indicators are driven to the safe region, even for critical initial conditions. Furthermore, in some specific cases there is no need to inject chemotherapeutic agents.
description: IFAC Symposium on Biological and Medical Systems - 11th BMS 2021 -- Ghent, Belgium, 19-22 September 2021
Roughness corrections to the Casimir force: The importance of local surface slope
Creators: name: van Zwol, P. J.
name: Palasantzas, G.
name: De Hosson, J. Th. M.
Publisher: name: arXiv
Year: 2007
Subjects: subject: Other Condensed Matter (cond-mat.other)
subject: Materials Science (cond-mat.mtrl-sci)
subject: FOS: Physical sciences

description: This paper concentrates on a study where finite conductivity corrections are included in the theoretical description of the effects of roughness on the Casimir force. The roughness data were taken from gold films evaporated onto Silicon and polysterene spheres. We conclude that for a detailed comparison with experimental data, i.e. at the level of at least 5 % at short separations below 200 nm, the lateral dimensions of roughness for real films should be included in the theoretical considerations. Moreover, if the RMS roughness is considerable, high local surface slopes are shown to have a significant effect on the Casimir force.
description: 13 pages. To be published
G2 Hitchin functionals at one loop
Creators: name: de Boer, Jan
name: de Medeiros, Paul
name: El-Showk, Sheer
name: Sinkovics, Annamaria
Publisher: name: arXiv
Year: 2007
Subjects: subject: High Energy Physics - Theory (hep-th)
subject: FOS: Physical sciences

description: We consider the quantization of the effective target space description of topological M-theory in terms of the Hitchin functional whose critical points describe seven-manifolds with G2 structure. The one-loop partition function for this theory is calculated and an extended version of it, that is related to generalized G2 geometry, is compared with the topological G2 string. We relate the reduction of the effective action for the extended G2 theory to the Hitchin functional description of the topological string in six dimensions. The dependence of the partition functions on the choice of background G2 metric is also determined.
description: 58 pages, LaTeX; v2: Acknowledgments added
Additional file 2 of Quantitative multiparametric MRI predicts response to neoadjuvant therapy in the community setting
Creators: name: Virostko, John
name: Sorace, Anna G.
name: Slavkova, Kalina P.
name: Kazerouni, Anum S.
name: Jarrett, Angela M.
name: DiCarlo, Julie C.
name: Woodard, Stefanie
name: Avery, Sarah
name: Goodgame, Boone
name: Patt, Debra
name: Yankeelov, Thomas E.
Publisher: name: figshare
Year: 2021
Subjects: subject: Biophysics
subject: 29999 Physical Sciences not elsewhere classified
subject: FOS: Physical sciences
subject: Medicine
subject: Cell Biology
subject: Cancer

description: Additional file 2: Figure S1. Receiver operating characteristic curves for each MRI parameter for predicting pCR from the relative change from baseline at each serial MRI.
Perceptual and cultural salience in noun classification : the puzzling case of standard Thai lêm
Creators: name: Placzek, James Anthony
Publisher: name: University of British Columbia
Year: 2010

description: In Standard Thai (ST), the national language of Thailand, the noun classifier lêm applies to books, oxcarts and candles, as well as a variety of sharp cutting implements. This classification seems to make no sense whatsoever to Western logic and in fact is inexplicable to Thais themselves. In this dissertation I work out a probable solution to this puzzle, and in so doing produce insights into the ST classifier system, and into the principles of noun classification in general. The orientation of this dissertation is empirical, using historical, linguistic and ethnographic data in a perceptual prototype model (cf. Hunn 1976), which is in turn part of a semantic theory of cultural stereotypes or Idealized Cognitive Models (cf. Lakoff 1982). The viewpoint of the naive realist observer (cf. Lyons 1977) is also an important theoretical factor. First, word association data on the above group of artifacts was collected from university students in Thailand and submitted to a computer-programmed cluster analysis in which, the item "book" emerged as the contemporary prototype. Next I investigated the shapes, construction procedures and symbolic or ritual associations of these objects. Perceptual similarities rather than symbolic relations or generic notions dominated the structure of the grouping. The next enquiry was into actual usage among speakers of a sample Thai dialect which, divides up the ST domain among two different classifiers, one a cognate of ST lêm. It was found that the other classifier applied more clearly to the iron tools, and the cognate of ST lêm more to the bound complex objects. In a broader comparison to other languages of the Tai family, it was found that most languages appeared to apply cognates of ST lêm according to a criterion of length or sharpness, and a focus on books and binding was peculiar to ST and neighbouring languages strongly influenced by ST. As a result of these investigations, and in accord with the theoretical principles outlined in previous chapters, the best scenario for the development of this classifier was presented. From an original grouping around a simple bamboo knife prototype, the group underwent a later restructuring around a bark paper manuscript prototype, with the shift due to cultural and historical factors. In a summary the main contributions of this dissertation were reviewed: (i) the importance of the Basic Level of reference and its attendant canonical view to the relationship between the perceptual prototype and the cultural stereotype (or ICM), (ii) the use of word association data and prototype theory in the study of noun classification, and (iii) the unexpected fidelity of this important Asian classifier system to shape criteria despite the influence of strong symbolic and generic factors.
Dentifemura Sheng & Sun 2010, gen. n.
Creators: name: Sheng, Mao-Ling
name: Sun, Shu-Ping
Publisher: name: Zenodo
Year: 2010
Subjects: Biodiversity
Taxonomy
Animalia
Arthropoda
Insecta
Hymenoptera
Ichneumonidae
Dentifemura

description: Dentifemura Sheng & Sun, gen. n. urn:lsid:zoobank.org:act: C7C1382E-22D0-4793-AF67-6AC56E3150F4
description: Published as part of Sheng, Mao-Ling & Sun, Shu-Ping, 2010, A new genus and species of Acaenitini (Hymenoptera, Ichneumonidae, Acaenitinae) from China, pp. 87-93 in ZooKeys 49 (49) on page 88, DOI: 10.3897/zookeys.49.408, http://zenodo.org/record/576678
Impedance Modeling and Stability Analysis of Grid-Interactive Converters-Slides
Creators: Yicheng Liao
Publisher: name: IEEE
Year: 2022

PELS Webinar Slides
Abstract: Modern power systems equipped with large amount of power electronic converters may suffer from small-signal instability due to the control interactions. To deal with this topic holistically, this webinar discusses impedance-based modeling and stability analysis approaches for converter-based systems and the application of these approaches for converter control design.
First, the impedance modeling of converter systems is introduced. A unified frequency-domain modeling approach of three-phase converters in the stationary reference frame is developed for both balanced and unbalanced grid conditions. The corresponding measurement approach is developed, which verifies the analytical model by frequency scan in experiments.
Next, how to utilize the impedance models for stability analysis is introduced. For single-input single-output systems, a more general impedance-based stability analysis approach implemented on individual impedance Bode diagrams is proposed, which enables to analyze black-box systems with open-loop right-half-plane poles and facilities the impedance specification for converter systems. Then, how to extend the impedance-based stability analysis for multi-input multi-output systems is introduced.
Finally, the impedance modeling and stability analysis approaches are applied to grid-forming converters for controller design and stability enhancement. For high-frequency stability, a passivity-based controller co-design method is proposed to achieve the passivity till half of the sampling frequency, which improves the stability in various grid connected scenarios. For low-frequency stability, a control-loop decomposition method is developed to analyze the impacts of multi-loop controllers on the converter’s impedance shaping, which facilitates the controller design to improve the stability in stiff grids.
Determination of the basis of the space of all root functionals of a system of polynomial equations and of the basis of its ideal by the operation of the extension of bounded root functionals
Creators: name: Seifullin, Timur R.
Publisher: name: arXiv
Year: 2008
Subjects: subject: Algebraic Geometry (math.AG)
subject: Symbolic Computation (cs.SC)
subject: Commutative Algebra (math.AC)
subject: FOS: Mathematics
subject: FOS: Computer and information sciences
subject: 13P99

description: It is proposed the algorithm that find a basis of the ideal and a basis of the space of all root functionals by using the extension operation for bounded root functionals, when the number of polynomials is equal to the number of variables, if it is known that the ideal of polynomials is 0-dimensional. The asyptotic complexity of this algorithm is d^{O(n)} operations, where n is the number of polynomials and the number of variables, d is the maximal degree of polynomials. The extension operation has connection with the multivariate Bezoutian construction.
description: Paper translated from Russian. Summary in English
Performance analysis of frequency regulation services provided by aggregates of domestic thermostatically controlled loads
Creators: name: Conte, F.
name: di Vergagni, M. Crosa
name: Massucco, S.
name: Silvestro, F.
name: Ciapessoni, E.
name: Cirio, D.
Publisher: name: arXiv
Year: 2021
Subjects: subject: Systems and Control (eess.SY)
subject: FOS: Electrical engineering, electronic engineering, information engineering

description: This paper proposes a control method for allowing aggregates of thermostatically controlled loads to provide synthetic inertia and primary frequency regulation services to the grid. The proposed control framework is fully distributed and basically consists in the modification of the thermostat logic as a function of the grid frequency. Three strategies are considered: in the first one, the load aggregate provides synthetic inertia by varying its active power demand proportionally to the frequency rate of change; in the second one, the load aggregate provides primary frequency regulation by varying its power demand proportionally to frequency; in the third one, the two services are combined. The performances of the proposed control solutions are analyzed in the forecasted scenario of the electric power system of Sardinia in 2030, characterized by a huge installation of wind and photovoltaic generation and no coil and combustible oil power plants. The considered load aggregate is composed by domestic refrigerators and water heaters. Results prove the effectiveness of the proposed approach and show that, in the particular case of refrigerators and water heaters, the contribution to the frequency regulation is more significant in the case of positive frequency variations. Finally, the correlation between the regulation performances and the level of penetration of the load aggregate with respect to the system total load is evaluated.
Additional file 1 of Beyond biopolitics: the importance of the later work of Foucault to understand care practices of healthcare workers caring for undocumented migrants
Creators: name: Lafaut, Dirk
Publisher: name: figshare
Year: 2021
Subjects: subject: Biophysics
subject: Medicine
subject: Cell Biology
subject: Biotechnology
subject: Sociology
subject: FOS: Sociology
subject: Developmental Biology
subject: Science Policy

description: Additional file 1: Interview guide healthcare workers.
Proton transport and torque generation in rotary biomotors
Creators: name: Smirnov, A. Yu.
name: Savel'ev, S.
name: Mourokh, L. G.
name: Nori, Franco
Publisher: name: arXiv
Year: 2008
Subjects: subject: Other Condensed Matter (cond-mat.other)
subject: Biological Physics (physics.bio-ph)
subject: Subcellular Processes (q-bio.SC)
subject: FOS: Physical sciences
subject: FOS: Biological sciences

description: We analyze the dynamics of rotary biomotors within a simple nano-electromechanical model, consisting of a stator part and a ring-shaped rotor having twelve proton-binding sites. This model is closely related to the membrane-embedded F$_0$ motor of adenosine triphosphate (ATP) synthase, which converts the energy of the transmembrane electrochemical gradient of protons into mechanical motion of the rotor. It is shown that the Coulomb coupling between the negative charge of the empty rotor site and the positive stator charge, located near the periplasmic proton-conducting channel (proton source), plays a dominant role in the torque-generating process. When approaching the source outlet, the rotor site has a proton energy level higher than the energy level of the site, located near the cytoplasmic channel (proton drain). In the first stage of this torque-generating process, the energy of the electrochemical potential is converted into potential energy of the proton-binding sites on the rotor. Afterwards, the tangential component of the Coulomb force produces a mechanical torque. We demonstrate that, at low temperatures, the loaded motor works in the shuttling regime where the energy of the electrochemical potential is consumed without producing any unidirectional rotation. The motor switches to the torque-generating regime at high temperatures, when the Brownian ratchet mechanism turns on. In the presence of a significant external torque, created by ATP hydrolysis, the system operates as a proton pump, which translocates protons against the transmembrane potential gradient. Here we focus on the F$_0$ motor, even though our analysis is applicable to the bacterial flagellar motor.
description: 24 pages, 5 figures
Latest results on b-hadron spectroscopy from CDF
Creators: name: CDF Collaboration
name: Gessler, Andreas
Publisher: name: arXiv
Year: 2007
Subjects: subject: High Energy Physics - Experiment (hep-ex)
subject: FOS: Physical sciences

description: B-hadron spectroscopy presents an interesting window for the study of QCD. CDF has performed a number of studies involving the production and spectroscopy of B mesons. Among these studies are the first direct observation of the Bc, and the first observation of both narrow states of the Bs**. In addition, measurements are made of the B** masses and widths and the best limit on the production of Eta_b is set.
description: Proceedings of the EPS talk given on HEP 2007 in Manchester
Some Thermodynamic Aspects of Pure Glue, Fuzzy Bags and Gauge/String Duality
Creators: name: Andreev, Oleg
Publisher: name: arXiv
Year: 2007
Subjects: subject: High Energy Physics - Phenomenology (hep-ph)
subject: High Energy Physics - Lattice (hep-lat)
subject: High Energy Physics - Theory (hep-th)
subject: Nuclear Theory (nucl-th)
subject: FOS: Physical sciences

description: The thermodynamic properties of a SU(3) gauge theory without quarks are calculated using a string formulation for 1.2T_c < T < 3T_c. The results are in good agreement with the lattice data. We also comment on SU(N) gauge theories.
description: 10 pages, 5 figures
High-dimensional acousto-optoelectric correlation spectroscopy reveals coupled carrier dynamics in polytypic nanowires
Creators: name: Sonner, Maximilian M.
name: Rudolph, Daniel
name: Koblmüller, Gregor
name: Krenner, Hubert J.
Publisher: name: arXiv
Year: 2021
Subjects: subject: Mesoscale and Nanoscale Physics (cond-mat.mes-hall)
subject: Applied Physics (physics.app-ph)
subject: Optics (physics.optics)
subject: FOS: Physical sciences

description: The authors combine acousto-optoelectric and multi-channel photon correlation spectroscopy to probe spatio-temporal carrier dynamics induced by a piezoelectric surface acoustic wave (SAW). The technique is implemented by combining phase-locked optical micro-photoluminescence spectroscopy and simultaneous three-channel time resolved detection. From the recorded time correlated single photon counting data the time transients of individual channels and the second and third order correlation functions are obtained with sub-nanosecond resolution. The method is validated by probing the correlations SAW-driven carrier dynamics between three decay channels of a single polytypic semiconductor nanowire on a conventional LiNbO$_\mathrm{3}$ SAW delay line chip. The method can be readily applied to other types of nanosystems and probe SAW-regulated charge state preparation in quantum dots, charge transfer processes in van der Waals heterostructures or other types of hybrid nanoarchitectures.
Support union recovery in high-dimensional multivariate regression
Creators: name: Obozinski, Guillaume
name: Wainwright, Martin J.
name: Jordan, Michael I.
Publisher: name: arXiv
Year: 2008
Subjects: subject: Machine Learning (stat.ML)
subject: Statistics Theory (math.ST)
subject: FOS: Computer and information sciences
subject: FOS: Mathematics

description: In multivariate regression, a $K$-dimensional response vector is regressed upon a common set of $p$ covariates, with a matrix $B^*\in\mathbb{R}^{p\times K}$ of regression coefficients. We study the behavior of the multivariate group Lasso, in which block regularization based on the $\ell_1/\ell_2$ norm is used for support union recovery, or recovery of the set of $s$ rows for which $B^*$ is nonzero. Under high-dimensional scaling, we show that the multivariate group Lasso exhibits a threshold for the recovery of the exact row pattern with high probability over the random design and noise that is specified by the sample complexity parameter $θ(n,p,s):=n/[2ψ(B^*)\log(p-s)]$. Here $n$ is the sample size, and $ψ(B^*)$ is a sparsity-overlap function measuring a combination of the sparsities and overlaps of the $K$-regression coefficient vectors that constitute the model. We prove that the multivariate group Lasso succeeds for problem sequences $(n,p,s)$ such that $θ(n,p,s)$ exceeds a critical level $θ_u$, and fails for sequences such that $θ(n,p,s)$ lies below a critical level $θ_{\ell}$. For the special case of the standard Gaussian ensemble, we show that $θ_{\ell}=θ_u$ so that the characterization is sharp. The sparsity-overlap function $ψ(B^*)$ reveals that, if the design is uncorrelated on the active rows, $\ell_1/\ell_2$ regularization for multivariate regression never harms performance relative to an ordinary Lasso approach and can yield substantial improvements in sample complexity (up to a factor of $K$) when the coefficient vectors are suitably orthogonal. For more general designs, it is possible for the ordinary Lasso to outperform the multivariate group Lasso. We complement our analysis with simulations that demonstrate the sharpness of our theoretical results, even for relatively small problems.
description: Published in at http://dx.doi.org/10.1214/09-AOS776 the Annals of Statistics (http://www.imstat.org/aos/) by the Institute of Mathematical Statistics (http://www.imstat.org)
Importance of T&D Grid Modernization to Mitigate Impacts from and Adapt to Climate Change (TR93)
Creators: Chair: Babu ChalamalaSandia National Laboratories
USA
Mark Paterson
Strategen
Australia - Region 10 representative
Costas Vournas
University of Athens
Greece - Region 8 representative
Dirk Van Hertem
University of Leuven
Belgium - Region 8 representative
Jef Beerten
KU Leuven
Belgium: IEEE European Policy Committee Chair
Jorge Lafitte
ISA REP
Colombia - Region 9 representative
Babak Enayati
National Grid
US: T&D Committee representative
Mark Lauby
NERC
United States: Executive Advisory Council (EAC) representative
Nilesh Modi
AEMO
Australia: Corporate Engagementment Program (CEP) representative
Marina Mondello
ComEd
US - CEP representative
Elli Ntakou
Quanta Technology
US - CEP representative
Xiaochuan Luo
ISO NE
US - CEP representative
Damir Novosel
ITS LC Chair and Executive Advisor Council secretary
Aleksi Paaso
United States: ITS LC Vice-Chair
Juan Castaneda
Southern California Edison
United States: ITS LC NERC liaison
Carla Frieh
ComEd
US - ITS LC Technology lead
Dagmar Niebur
Drexel University
US- ITS LC Technology lead
Veronika Rabl
United States: ITS LC conferences and meetings lead
Robert Jeffers
National Renewable Energy Lab
United States: ITS LC Climate Change TF Chair
Daniel Kushner
Accenture
United States: ITS LC Climate Change TF Vice Chair
Publisher: name: IEEE
Year: 2022

The electric industry is undergoing one of its most dramatic transformations in a century driven by the need to reduce dependence on fossil fuels for generation, integrate clean energy technologies, and adapt to the realities of climate change. The grid is also being increasingly tested by weather events exacerbated by climate change that bring extreme weather conditions with greater frequency and intensity, as well as by human-made threats like physical and cyber-attacks. These chronic climate stressors and increases in building cooling and heating loads require that the grid is adequately engineered to respond. To achieve aggressive decarbonization goals, the electric power sector will need to re-think how to plan, design, regulate, and operate the electric grid. This technical report identifies efforts of the power sector to modernize the grid and combat climate change. It highlights the importance of T&D grid modernization to mitigate impacts from and adapt to climate change. It helps to frame, inform, and support the industry’s activities and investment priorities to pursue the decarbonization of the electric power sector.
IAU100 Above & Beyond Exhibition Posters
Creators: name: Russo, Pedro
name: van Dishoeck, Ewine
name: Pomierny, Jan
name: Alwast, Lukasz
name: Rivero, Jorge
Publisher: name: Zenodo
Year: 2019
Subjects: Astronomy
Science Communication
IAU

description: A new set of 12 posters have been created as a scaled-down version of the IAU100 Above and Beyond Exhibition. This version of the exhibition is well suited for display at meetings, universities, schools and other venues.

Designed with Science Now, the IAU100 Above and Beyond exhibition showcases some of the most significant and surprising astronomical breakthroughs that have shaped science, technology and culture over the last century. The exhibition has an interdisciplinary and international scope, outlining that scientific discovery is not a one-off endeavour, but a continuous process that takes decades to fully grasp and comprehend. It is underpinned by three core questions that seem equally inquisitive today, as they were a century ago: What is the size and structure of the Universe? Is there life outside of the Earth? What powers the stars, how do they begin to shine and what happens when they die?

This special exhibition has now been scaled-down to a special set of 12 A0 posters that feature the exhibition’s highlights. Like the full exhibition, it was designed to bring beautiful and insightful astronomical storytelling to the general public in the spirit of open science. This version is well suited for display at meetings, universities, schools, societies and other venues.

Executive Producers: Ewine van Dishoeck (Leiden University, IAU), Jan Pomierny (Science Now) and Pedro Russo (Leiden University, IAU)

Creative Producer: Lukasz Alwast (Science Now)

IAU100 Coordinator: Jorge Rivero Gonzalez (Leiden University, IAU)

Creative Concept: Lukasz Alwast (Science Now), Karolina Panasiuk (Science Now) and Jan Pomierny (Science Now)

Content Development: Lukasz Alwast (Science Now), Kamil Deresz (Science Now), Ewine van Dishoeck (Leiden University, IAU), Jorge Rivero Gonzalez (Leiden University, IAU), Jan Pomierny (Science Now), Milena Ratajczak (Science Now) and Pedro Russo (Leiden University, IAU)

Content Support: Jarle Brinchmann, Dirk van Delft, Henk Hoekstra, Makysmilian Manko, Claudia Mignone and Frans Snik

Poster Design: Lisa Pothoven (Leiden University)
description: {"references": ["Russo, Pedro, van Dishoeck, Ewine, Pomierny, Jan, & Alwast, \u0141ukasz. (2018, August 20). Above and Beyond: Making Sense Of The Universe For 100 Years exhibition (Version 1.0). Zenodo. http://doi.org/10.5281/zenodo.1491839"]}
Detecting Hidden Units and Network Size from Perceptible Dynamics
Creators: name: Haehne, Hauke
name: Casadiego, Jose
name: Peinke, Joachim
name: Timme, Marc
Publisher: name: arXiv
Year: 2021
Subjects: subject: Adaptation and Self-Organizing Systems (nlin.AO)
subject: Disordered Systems and Neural Networks (cond-mat.dis-nn)
subject: Systems and Control (eess.SY)
subject: Quantitative Methods (q-bio.QM)
subject: FOS: Physical sciences
subject: FOS: Electrical engineering, electronic engineering, information engineering
subject: FOS: Biological sciences

description: The number of units of a network dynamical system, its size, arguably constitutes its most fundamental property. Many units of a network, however, are typically experimentally inaccessible such that the network size is often unknown. Here we introduce a \emph{detection matrix }that suitably arranges multiple transient time series from the subset of accessible units to detect network size via matching rank constraints. The proposed method is model-free, applicable across system types and interaction topologies and applies to non-stationary dynamics near fixed points, as well as periodic and chaotic collective motion. Even if only a small minority of units is perceptible and for systems simultaneously exhibiting nonlinearities, heterogeneities and noise, \emph{exact} size detection is feasible. We illustrate applicability for a paradigmatic class of biochemical reaction networks.
description: Supplement available via the DOI below. https://doi.org/10.1103/PhysRevLett.122.158301
Multi-triangulations as complexes of star polygons
Creators: name: Pilaud, Vincent
name: Santos, Francisco
Publisher: name: arXiv
Year: 2007
Subjects: subject: Combinatorics (math.CO)
subject: FOS: Mathematics
subject: 52C20, 05C62, 68U05

description: Maximal $(k+1)$-crossing-free graphs on a planar point set in convex position, that is, $k$-triangulations, have received attention in recent literature, with motivation coming from several interpretations of them. We introduce a new way of looking at $k$-triangulations, namely as complexes of star polygons. With this tool we give new, direct, proofs of the fundamental properties of $k$-triangulations, as well as some new results. This interpretation also opens-up new avenues of research, that we briefly explore in the last section.
description: 40 pages, 24 figures; added references, update Section 8
Not so non-renormalizable gravity
Creators: name: Kreimer, Dirk
Publisher: name: arXiv
Year: 2008
Subjects: subject: High Energy Physics - Theory (hep-th)
subject: FOS: Physical sciences

description: We review recent progress with the understanding of quantum fields, including ideas how gravity might turn out to be a renormalizable theory after all.
description: 7 pages
Power & Energy Magazine - Volume 20: Issue 1 - January/February 2022 : Fire
Creators: Wolfram Jahn
Bill Chiu
Rosa Serrano
Dean Sharafi
Eric A. Udren
Rodrigo Moreno
Publisher: name: IEEE
Year: 2022

Wildfires increasingly ravage the operation of electric energy systems. In
this pressing context,
this IEEE Power & Energy Magazine issue
provides an overview
of wildfires across the
world and then analyzes
the impact of wildfires
on the operation of
power systems from different viewpoints.
system integration issues,
exacerbated by increasing electricity demand,
deserve careful study with
early remedies to avoid
dramatic socioeconomic impacts.
More Power to the Future
Physics-aware and Risk-aware Machine Learning for Power System Operations (Slides)
Creators: Hao Zhu
Publisher: name: IEEE
Year: 2022

Recent years have witnessed rapid transformations of contemporary advances in machine learning (ML) and data science to aid the transition of energy systems into a truly sustainable, resilient, and distributed infrastructure. A blind application of the latest-and-greatest ML algorithms to solve stylized grid operation problems, however, may fail to recognize the underlying physics models or safety constraint requirements. This talk will introduce three examples of bridging physics- and risk-aware ML advances into efficient and reliable grid operations. First, we develop a topology-aware approach using graph neural networks (GNNs) to predict the price and line congestion as the outputs of real-time optimal power flow problem. Building upon the underlying relation between prices and topology, this proposed solution significantly reduces the model complexity of existing end-to-end ML methods while efficiently adapting to varying grid topology. Second, we put forth a risk-aware ML method to ensure the safety guarantees of data-driven, scalable reactive power dispatch policies in distribution grids. The resultant policies can directly account for the statistical risks on prediction error to attain guaranteed voltage violation performance. Last, we consider a reinforcement learning framework for managing a large number of dynamical, flexible energy resources such as electrical vehicles, and demonstrate the need to simplify the system representation through physics-aware state/action aggregation.
Recent years have witnessed rapid transformations of contemporary advances in machine learning (ML) and data science to aid the transition of energy systems into a truly sustainable, resilient, and distributed infrastructure. A blind application of the latest-and-greatest ML algorithms to solve stylized grid operation problems, however, may fail to recognize the underlying physics models or safety constraint requirements. This talk will introduce three examples of bridging physics- and risk-aware ML advances into efficient and reliable grid operations. First, we develop a topology-aware approach using graph neural networks (GNNs) to predict the price and line congestion as the outputs of real-time optimal power flow problem. Building upon the underlying relation between prices and topology, this proposed solution significantly reduces the model complexity of existing end-to-end ML methods while efficiently adapting to varying grid topology. Second, we put forth a risk-aware ML method to ensure the safety guarantees of data-driven, scalable reactive power dispatch policies in distribution grids. The resultant policies can directly account for the statistical risks on prediction error to attain guaranteed voltage violation performance. Last, we consider a reinforcement learning framework for managing a large number of dynamical, flexible energy resources such as electrical vehicles, and demonstrate the need to simplify the system representation through physics-aware state/action aggregation.
Making Almost Commuting Matrices Commute
Creators: name: Hastings, M. B.
Publisher: name: arXiv
Year: 2008
Subjects: subject: Quantum Physics (quant-ph)
subject: Mathematical Physics (math-ph)
subject: FOS: Physical sciences

description: Suppose two Hermitian matrices $A,B$ almost commute ($\Vert [A,B] \Vert \leq δ$). Are they close to a commuting pair of Hermitian matrices, $A',B'$, with $\Vert A-A' \Vert,\Vert B-B'\Vert \leq ε$? A theorem of H. Lin shows that this is uniformly true, in that for every $ε>0$ there exists a $δ>0$, independent of the size $N$ of the matrices, for which almost commuting implies being close to a commuting pair. However, this theorem does not specify how $δ$ depends on $ε$. We give uniform bounds relating $δ$ and $ε$. We provide tighter bounds in the case of block tridiagonal and tridiagonal matrices and a fully constructive method in that case. Within the context of quantum measurement, this implies an algorithm to construct a basis in which we can make a {\it projective} measurement that approximately measures two approximately commuting operators simultaneously. Finally, we comment briefly on the case of approximately measuring three or more approximately commuting operators using POVMs (positive operator-valued measures) instead of projective measurements.
description: 22 pages; tighter bounds; Note: fixed mistake in proof pointed out by Filonov and Kachkovskiy
Additional file 1 of The tumor immune microenvironment of primary and metastatic HER2− positive breast cancers utilizing gene expression and spatial proteomic profiling
Creators: name: Schlam, Ilana
name: Church, Sarah E.
name: Hether, Tyler D.
name: Chaldekas, Krysta
name: Hudson, Briana M.
name: White, Andrew M.
name: Maisonet, Emily
name: Harris, Brent T.
name: Swain, Sandra M.
Publisher: name: figshare
Year: 2021
Subjects: subject: Medicine
subject: Cell Biology
subject: Genetics
subject: FOS: Biological sciences
subject: Immunology
subject: FOS: Clinical medicine
subject: 69999 Biological Sciences not elsewhere classified
subject: Cancer

description: Additional file 1. Additional figures and tables.
Kipppunkt Sesshaftwerdung: Wie Epen und Geschichtsschreibung damit umgehen
Creators: name: Emeis, Stefan
Publisher: name: Karlsruher Institut für Technologie (KIT)
Year: 2021
Subjects: Kipppunkt
mesopotamische Epen
Nachhaltigkeit

description: Entscheidende Wendepunkte in der Entwicklung der menschlichen Gesellschaft lassen sich als Kipppunkte beschreiben, die weitgehend irreversible sind. Neuzeitliche Kipppunkte sind u.a. die Erfindung der Dampfmaschine, die Nutzung fossiler Rohstoffe und die Herstellung von Kunstdünger. Ein einschneidender früherer Kipppunkt ist die Sesshaftwerdung des Menschen. Dieser schwerwiegende Vorgang wird in den Epen des Zweistromlandes (Atrahasis, Gilgamesh, Genesis) aufgearbeitet. Die Gemeinsamkeiten in der Darstellung dieses Kipppunktes in den drei Epen werden aufgezeigt. Analogien zu Kipppunkten in der globalen Erwärmung der Erde werden gezogen. Abschließend wird überlegt, wie die Folgen der neuzeitlichen Kipppunkte abgewendet werden können und man zu einer nachhaltigen Entwicklung der Gesellschaft kommt.
Nucleon form factors from quenched lattice QCD with domain wall fermions
Creators: name: Sasaki, Shoichi
name: Yamazaki, Takeshi
Publisher: name: arXiv
Year: 2007
Subjects: subject: High Energy Physics - Lattice (hep-lat)
subject: High Energy Physics - Phenomenology (hep-ph)
subject: FOS: Physical sciences

description: We present a quenched lattice calculation of the weak nucleon form factors: vector (F_V(q^2)), induced tensor (F_T(q^2)), axial-vector (F_A(q^2)) and induced pseudo-scalar (F_P(q^2)) form factors. Our simulations are performed on three different lattice sizes L^3 x T=24^3 x 32, 16^3 x 32 and 12^3 x 32 with a lattice cutoff of 1/a = 1.3 GeV and light quark masses down to about 1/4 the strange quark mass (m_{pi} = 390 MeV) using a combination of the DBW2 gauge action and domain wall fermions. The physical volume of our largest lattice is about (3.6 fm)^3, where the finite volume effects on form factors become negligible and the lower momentum transfers (q^2 = 0.1 GeV^2) are accessible. The q^2-dependences of form factors in the low q^2 region are examined. It is found that the vector, induced tensor, axial-vector form factors are well described by the dipole form, while the induced pseudo-scalar form factor is consistent with pion-pole dominance. We obtain the ratio of axial to vector coupling g_A/g_V=F_A(0)/F_V(0)=1.219(38) and the pseudo-scalar coupling g_P=m_{mu}F_P(0.88m_{mu}^2)=8.15(54), where the errors are statistical erros only. These values agree with experimental values from neutron beta decay and muon capture on the proton. However, the root mean squared radii of the vector, induced tensor and axial-vector underestimate the known experimental values by about 20%. We also calculate the pseudo-scalar nucleon matrix element in order to verify the axial Ward-Takahashi identity in terms of the nucleon matrix elements, which may be called as the generalized Goldberger-Treiman relation.
description: 46 pages, 44 figures, v2: one section (including four new figures and several new tables) added for comparison with other studies, conclusions remain unchanged, v3: accepted version, v4: published version in PRD
Effects of payoff functions and preference distributions in an adaptive population
Creators: name: Yang, H. M.
name: Ting, Y. S.
name: Wong, K. Y. Michael
Publisher: name: arXiv
Year: 2007
Subjects: subject: Statistical Finance (q-fin.ST)
subject: Physics and Society (physics.soc-ph)
subject: FOS: Economics and business
subject: FOS: Physical sciences

description: Adaptive populations such as those in financial markets and distributed control can be modeled by the Minority Game. We consider how their dynamics depends on the agents' initial preferences of strategies, when the agents use linear or quadratic payoff functions to evaluate their strategies. We find that the fluctuations of the population making certain decisions (the volatility) depends on the diversity of the distribution of the initial preferences of strategies. When the diversity decreases, more agents tend to adapt their strategies together. In systems with linear payoffs, this results in dynamical transitions from vanishing volatility to a non-vanishing one. For low signal dimensions, the dynamical transitions for the different signals do not take place at the same critical diversity. Rather, a cascade of dynamical transitions takes place when the diversity is reduced. In contrast, no phase transitions are found in systems with the quadratic payoffs. Instead, a basin boundary of attraction separates two groups of samples in the space of the agents' decisions. Initial states inside this boundary converge to small volatility, while those outside diverge to a large one. Furthermore, when the preference distribution becomes more polarized, the dynamics becomes more erratic. All the above results are supported by good agreement between simulations and theory.