cometadata/datacite-rtg-text-other-reclassification-records huggingface dataset:
Keynote: Securely Enabling a Transition to Net-Zero (slides)
Creators: Dr. Bruce Stedall
Publisher: name: IEEE
Year: 2023

Many countries have made commitments to deliver net-zero. To achieve net-zero requires power grids to contend with several issues. The journey to net-zero also needs to take place in the context of many utility asset bases maturing and requiring interventions to efficiently ensure continued security of supply.

To address these aspects some solutions already exist and are being adopted. For other issues the technologies are maturing and the economics increasingly becoming more attractive.

With many countries targeting 2050 as a timeline to achieve net-zero coupled with the rate of advancement of innovation today, there will also be technologies that we don�t know about today that will come to fruition. This keynote will outline the issues being addressed to ensure preparedness in the power grids of the future.
Many countries have made commitments to deliver net-zero. To achieve net-zero requires power grids to contend with several issues. The journey to net-zero also needs to take place in the context of many utility asset bases maturing and requiring interventions to efficiently ensure continued security of supply.

To address these aspects some solutions already exist and are being adopted. For other issues the technologies are maturing and the economics increasingly becoming more attractive.

With many countries targeting 2050 as a timeline to achieve net-zero coupled with the rate of advancement of innovation today, there will also be technologies that we don�t know about today that will come to fruition. This keynote will outline the issues being addressed to ensure preparedness in the power grids of the future.
L'esperienza della Grande Guerra nell'autobiografia femminile in Gran Bretagna
Creators: name: Porzio, Barbara
Publisher: name: Università degli Studi di Napoli Federico II
Year: 2009

description: Il presente lavoro è incentrato sull’analisi delle autobiografie femminili della prima guerra mondiale pubblicate in Gran Bretagna negli anni Trenta del secolo scorso. Nell’introduzione, dopo una breve riflessione di carattere teorico e metodologico sul genere autobiografico ed alcune considerazioni sul contesto storico-culturale in cui nacquero tali opere, viene rintracciata una griglia di argomentazioni retoriche ricorrenti che se da un lato non consentono di ipotizzare l’esistenza di un sottogenere, dall’altro caratterizzano marcatamente le autobiografie prese in esame. Il primo e il secondo capitolo propongono, rispettivamente, una lettura ravvicinata di /Testament o f Youth /(1933) di Vera Brittain e /No Time Like the Present/ (1933) di Margaret Storm Jameson, opere in cui la /Grande Guerra agisce da vera e propria categoria ermeneutica nel processo di individuazione del sé; vengono inoltre analizzati i romanzi pubblicati dalle due scrittrici dal 1922 al 1936 in cui il tema della guerra viene esplorato in molte delle sue sfaccettature. In questo studio si è cercato quindi di individuare la specificità scritturale di /Testament of Youth/ e di /No Time Like the Present/ indagando le relazioni che sussistono tra le due autobiografie del ’33 e le altre opere appartenenti alla produzione della Brittain e della Jameson.
How to play a disc brake
Creators: name: Kirillov, Oleg N.
Publisher: name: arXiv
Year: 2007
Subjects: subject: Mathematical Physics (math-ph)
subject: Pattern Formation and Solitons (nlin.PS)
subject: Classical Physics (physics.class-ph)
subject: FOS: Physical sciences
subject: 34D20, 34D10, 74H45, 74H55, 47A55, 47A75

description: We consider a gyroscopic system under the action of small dissipative and non-conservative positional forces, which has its origin in the models of rotating bodies of revolution being in frictional contact. The spectrum of the unperturbed gyroscopic system forms a "spectral mesh" in the plane "frequency -gyroscopic parameter" with double semi-simple purely imaginary eigenvalues at zero value of the gyroscopic parameter. It is shown that dissipative forces lead to the splitting of the semi-simple eigenvalue with the creation of the so-called "bubble of instability" - a ring in the three-dimensional space of the gyroscopic parameter and real and imaginary parts of eigenvalues, which corresponds to complex eigenvalues. In case of full dissipation with a positive-definite damping matrix the eigenvalues of the ring have negative real parts making the bubble a latent source of instability because it can "emerge" to the region of eigenvalues with positive real parts due to action of both indefinite damping and non-conservative positional forces. In the paper, the instability mechanism is analytically described with the use of the perturbation theory of multiple eigenvalues. As an example stability of a rotating circular string constrained by a stationary load system is studied in detail. The theory developed seems to give a first clear explanation of the mechanism of self-excited vibrations in the rotating structures in frictional contact, that is responsible for such well-known phenomena of acoustics of friction as the squealing disc brake and the singing wine glass.
description: 25 pages, 9 figures, Presented at BIRS 07w5068 Workshop "Geometric Mechanics: Continuous and discrete, finite and infinite dimensional", August 12-17, 2007, Banff, Canada
On the use of test smells for prediction of flaky tests
Creators: name: Camara, B. H. P.
name: Silva, M. A. G.
name: Endo, A. T.
name: Vergilio, S. R.
Publisher: name: arXiv
Year: 2021
Subjects: subject: Software Engineering (cs.SE)
subject: Machine Learning (cs.LG)
subject: FOS: Computer and information sciences

description: Regression testing is an important phase to deliver software with quality. However, flaky tests hamper the evaluation of test results and can increase costs. This is because a flaky test may pass or fail non-deterministically and to identify properly the flakiness of a test requires rerunning the test suite multiple times. To cope with this challenge, approaches have been proposed based on prediction models and machine learning. Existing approaches based on the use of the test case vocabulary may be context-sensitive and prone to overfitting, presenting low performance when executed in a cross-project scenario. To overcome these limitations, we investigate the use of test smells as predictors of flaky tests. We conducted an empirical study to understand if test smells have good performance as a classifier to predict the flakiness in the cross-project context, and analyzed the information gain of each test smell. We also compared the test smell-based approach with the vocabulary-based one. As a result, we obtained a classifier that had a reasonable performance (Random Forest, 0.83) to predict the flakiness in the testing phase. This classifier presented better performance than vocabulary-based model for cross-project prediction. The Assertion Roulette and Sleepy Test test smell types are the ones associated with the best information gain values.
Structure in the Event-by-Event Energy-Dependent Neutron-Gamma Multiplicity Correlations in $^{252}\text{Cf}$(sf)
Creators: name: Marin, Stefano
name: Okar, Mustapha Stephan
name: Sansevero, Eoin P.
name: Hernandez, Isabel E.
name: Ballard, Catherine A.
name: Vogt, Ramona
name: Randrup, Jørgen
name: Talou, Patrick
name: Lovell, Amy E.
name: Stetcu, Ionel
name: Serot, Olivier
name: Litaize, Olivier
name: Chebboubi, Abdelhazize
name: Clarke, Shaun D.
name: Protopopescu, Vladimir A.
name: Pozzi, Sara A.
Publisher: name: arXiv
Year: 2021
Subjects: subject: Nuclear Experiment (nucl-ex)
subject: Nuclear Theory (nucl-th)
subject: FOS: Physical sciences

description: The emission of neutrons and gamma rays by fission fragments reveal important information about the properties of fragments immediately following scission. The initial fragment properties, correlations between fragments, and emission competition give rise to correlations in neutron-gamma emission. Neutron-gamma correlations are important in nonproliferation applications because the characterization of fissionable samples relies on the identification of signatures in the measured radiation. Furthermore, recent theoretical and experimental advances have proposed to explain the mechanism of angular momentum generation in fission. In this paper, we present a novel analysis method of neutrons and gamma rays emitted by fission fragments that allows us to discern structure in the observed correlations. We have analyzed data collected on \ce{^{252}Cf}(sf) at the Chi-Nu array at the Los Alamos Neutron Science Center. Through our analysis of the energy-differential neutron-gamma multiplicity covariance, we have observed enhanced neutron-gamma correlations, corresponding to rotational band gamma-ray transitions, at gamma-ray energies of $0.7$ and $1.2$ MeV. To shed light on the origin of this structure, we compare the experimental data with the predictions of three model calculations. The origin of the observed correlation structure is understood in terms of a positive spin-energy correlation in the generation of angular momentum in fission.
description: 21 pages, 4 figures, 1 table
JNK and ERK8 as downstream effectors of receptor tyrosine kinases
Creators: name: Iavarone, Carlo
Publisher: name: Università degli Studi di Napoli Federico II
Year: 2006

description: MAP kinases are a super-family of serine-threonine protein kinases expressed in all eukaryotic cells. In mammals, there are many MAP kinases with different biological functions, grouped in distinctly regulated groups, ERK1/2 (extracellular signal related kinase, ERK), JNKs (jun amino terminal kinase, JNK), p38 and “atypical” MAP kinases. The MAP kinase transduction system is particularly important in growth factors signaling, which in turn control cell growth, proliferation, differentiation, survival and migration by activating receptor tyrosine kinase (RTK) family members, as platelet-derived growth factor (PDGF) and RET.
In the first report, we show that JNK is required for PDGF induction of c-myc expression. Furthermore, we identify a phylogenetically conserved AP-1 responsive element in the human, mouse and even drosophila c-myc promoter. Such element binds, in vivo, to members of the Jun family of transcription factors, c-Jun and JunD, as indicated by chromatin immunoprecipitation analysis. Finally, we show that, through this element, PDGF is able to control the activity of the c-myc transcription factor promoter in an AP-1 dependent fashion, implying the existence of a novel signaling pathway linking the PDGF receptor, through JNK and Jun proteins, to nuclear events culminating in the expression of the c-myc proto-oncogene.
In the second report, we show that RET/PTC3 activates Erk8, a new member of “atypical” MAP kinases group, by an Abl-dependent but Src-independent mechanism and demonstrate a key role for Tyr981 of RET/PTC3 in the initiation of such signaling pathway. Also, by using an alternative Erk8 splice variant, Erk8, lacking the C-terminal domain, we establish a role for this region in the activation of this MAP kinase by RET/PTC3. Finally, the use of a dominant interfering molecule for Erk8 revealed that RET/PTC3 requires this MAP kinase to stimulate the c-jun transcription factor promoter.
On the Riemannian Penrose inequality in dimensions less than 8
Creators: name: Bray, Hubert L.
name: Lee, Dan A.
Publisher: name: arXiv
Year: 2007
Subjects: subject: Differential Geometry (math.DG)
subject: General Relativity and Quantum Cosmology (gr-qc)
subject: FOS: Mathematics
subject: FOS: Physical sciences
subject: 83C99, 53C20

description: The Positive Mass Theorem states that a complete asymptotically flat manifold of nonnegative scalar curvature has nonnegative mass. The Riemannian Penrose inequality provides a sharp lower bound for the mass when black holes are present. More precisely, this lower bound is given in terms of the area of an outermost minimal surface, and equality is achieved only for Schwarzschild metrics. The Riemannian Penrose inequality was first proved in three dimensions in 1997 by G. Huisken and T. Ilmanen for the case of a single black hole. In 1999, H. Bray extended this result to the general case of multiple black holes using a different technique. In this paper we extend Bray's technique to dimensions less than 8.
description: 21 pages
Joint LED Selection and Precoding Optimization for Multiple-User Multiple-Cell VLC Systems
Creators: name: Yang, Yang
name: Yang, Yujie
name: Chen, Mingzhe
name: Feng, Chunyan
name: Xia, Hailun
name: Cui, Shuguang
name: Poor, H. Vincent
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 hybrid dimming scheme based on joint LED selection and precoding design (TASP-HD) for multiple-user (MU) multiple-cell (MC) visible light communications (VLC) systems. In TASP-HD, both the LED selection and the precoding of each cell can be dynamically adjusted to reduce the intra- and inter-cell interferences while satisfying illumination constraints. First, a MU-MC-VLC system model is established, and then a sum-rate maximization problem under dimming level and illumination uniformity constraints is formulated. In this studied problem, the indices of activated LEDs and precoding matrices are optimized, which result in a complex non-convex mixed integer problem. To solve this problem, the original problem is separated into two subproblems. The first subproblem, which maximizes the sum-rate of users via optimizing the LED selection with a given precoding matrix, is a mixed integer problem solved by the penalty method. With the optimized LED selection matrix, the second subproblem which focuses on the maximization of the sum-rate via optimizing the precoding matrix is solved by the Lagrangian dual method. Finally, these two subproblems are iteratively solved to obtain a convergent solution. Simulation results verify that in a typical indoor scenario under a dimming level of 70%, the mean bandwidth efficiency of TASP-HD is 4.8 bit/s/Hz and 7.13 bit/s/Hz greater than AD and DD, respectively.
Keynote: The Role of Microgrids in Enhancing Power System Resilience Against Natural Disasters (slides)
Creators: N. Hatziargyriou
Publisher: name: IEEE
Year: 2023

Power system resilience is defined as the ability of power grids to anticipate, withstand, adapt and recover from high-impact low-probability (HILP) events. There are long-term and short-term measures that system operators can apply to enhance resilience.

Long-term measures include infrastructure hardening and resilient planning, while short-term operational measures are applied in the pre-event, during-event and post-event phase. Microgrids (MGs) can effectively enhance resilience for both transmission and distribution systems, due to their ability to operate in a controlled, coordinated way, when connected to the main power grid and in islanded mode.

In this presentation, various real-world events, where MGs have been used to enhance power system resilience in various extreme weather events. MG-based operational measures for resilience enhancement will be presented, including the systematic MGs formation after natural disasters hit the system and MG-based resilient operational planning.
Power system resilience is defined as the ability of power grids to anticipate, withstand, adapt and recover from high-impact low-probability (HILP) events. There are long-term and short-term measures that system operators can apply to enhance resilience.

Long-term measures include infrastructure hardening and resilient planning, while short-term operational measures are applied in the pre-event, during-event and post-event phase. Microgrids (MGs) can effectively enhance resilience for both transmission and distribution systems, due to their ability to operate in a controlled, coordinated way, when connected to the main power grid and in islanded mode.

In this presentation, various real-world events, where MGs have been used to enhance power system resilience in various extreme weather events. MG-based operational measures for resilience enhancement will be presented, including the systematic MGs formation after natural disasters hit the system and MG-based resilient operational planning.
The Role of Agricultural Commodity Assistance in International Aid Programs
Creators: name: Barlow, Frank D.
name: Libbin, Susan A.
name: Barlow, Frank D.
name: Libbin, Susan A.
Publisher: name: Unknown
Year: 1965
Subjects: Agricultural and Food Policy
Food Security and Poverty
International Development
International Relations/Trade

description: Report Introduction: U.S. assistance in the form of agricultural commodities played a vital role in the recovery of Western Europe and Japan after World War II. This aid decreased markedly during 1951-54; but since the inception of Public Law 480 a decade ago, agricultural commodity aid has become an integral part of U.S. economic assistance to the developing countries of Asia, Africa, and Latin America. In recent years this aid has accounted for nearly half of the total net flow of U.S. economic assistance from public sources. This report reviews some trends and highlights of U.S. agricultural commodity aid programs, particularly P.L. 480, and their relationship to commercial agricultural exports and other U.S. foreign economic aid programs. Bilateral food aid programs of other countries and the World Food Program also are discussed. A brief review is made of the relative magnitude of U.S. economic assistance compared with the world flow of development aid from the industrial countries and the increasing trends toward the coordination of bilateral aid programs within a multilateral framework. Also analyzed is the future role of agricultural commodity aid programs.
Temperature and dislocation stress field models of the LEC growth of gallium arsenide
Creators: name: Schvezov, Carlos Enrique
Publisher: name: University of British Columbia
Year: 2010

description: The temperature fields and resulting stress fields have been calculated for a growing GaAs crystal produced by the LEC process. The calculations are based in a finite element numerical thermoelastic stress analysis. The calculated temperature fields have been compared to reported experimental measurements with good agreement. The stress fields have been used to calculate the resolved shear stresses, in the growing crystal, from which the dislocation density and distribution were determined. Using the model the effects of a range of growth and environmental parameters on the dislocation density and distribution were determined. Theses parameters include crystal length, crystal diameter, cone taper, boron oxide thickness, gas pressure, solid/liquid interface shape, vertical temperature gradients and others. The results show that the temperature distribution in the gas surrounding the crystal, and the boron oxide thickness, were critical factors in determining the dislocation density and distribution in the crystal. The crystal radius, crystal length and interface curvature also strongly influenced the dislocation configuration. After crystal growth, the dislocation density at the end of the crystal was strongly influenced by the cooling procedure adopted. The dislocation distribution on cross-sections of the crystal exhibited two-fold, four-fold and eight-fold symmetry depending on growth and cooling conditions and position in the crystal.
Keynote: Microgrids Overview (slides)
Creators: Dr. Claudio Canizares
Publisher: name: IEEE
Year: 2023

Microgrids are not new to power systems, since these local and small grids have been widely deployed and utilized for electricity supply in remote and isolated communities such as islands and remote villages throughout the world. However, there is nowadays a rapid development and deployment of microgrids in the context of smart and resilient power networks, in good part motivated by the need to integrate distributed generation, especially if powered by renewable resources such as wind and solar, to reduce operational costs and the environmental impact of these grids, particularly for diesel-depended isolated microgrids.

The presentation will provide a general overview of microgrids and the research work being carried out by Prof. Canizares� group at the University of Waterloo on the area, including a summary of a survey carried out by the group on remote microgrids in Canada, and a detailed description of the microgrid in one of these communities, namely, the Kasabonika Lake First Nation (KLFN) community microgrid in Northern Ontario, where a one-year measuring campaign was carried out to identify main technical issues associated with these kinds of microgrids.
Microgrids are not new to power systems, since these local and small grids have been widely deployed and utilized for electricity supply in remote and isolated communities such as islands and remote villages throughout the world. However, there is nowadays a rapid development and deployment of microgrids in the context of smart and resilient power networks, in good part motivated by the need to integrate distributed generation, especially if powered by renewable resources such as wind and solar, to reduce operational costs and the environmental impact of these grids, particularly for diesel-depended isolated microgrids.

The presentation will provide a general overview of microgrids and the research work being carried out by Prof. Canizares� group at the University of Waterloo on the area, including a summary of a survey carried out by the group on remote microgrids in Canada, and a detailed description of the microgrid in one of these communities, namely, the Kasabonika Lake First Nation (KLFN) community microgrid in Northern Ontario, where a one-year measuring campaign was carried out to identify main technical issues associated with these kinds of microgrids.
A near-infrared survey of the entire R Corona Australis cloud
Creators: name: Haas, M.
name: Heymann, F.
name: Domke, I.
name: Drass, H.
name: Chini, R.
name: Hoffmeister, V.
Publisher: name: arXiv
Year: 2008
Subjects: subject: Astrophysics (astro-ph)
subject: FOS: Physical sciences

description: To understand low- to intermediate-mass star-formation in the nearby R CrA molecular cloud, we try to identify the stellar content that is accessible with near-infrared observations. We obtained a JHK band mosaic of 10 x 60 arcmin square covering the entire RCrA molecular cloud with unprecedented sensitivity. We present a catalogue of about 3500 near-infrared sources fainter than the saturation limit K = 10 mag, reaching K = 18mag. We analysed the extended sources by inspecting their morphology and point sources by means of colour-colour and colour-magnitude diagrams. Additionally, we compared the extinction inferred from the NIR data with the line-of-sight dust emission at 1.2 mm. Sources towards high dust emission but relatively low H-K show a projected mm-exces; these sources are either immediately surrounded by cold circumstellar material or, if too red to be a true foreground object, they are embedded in the front layer of the 1.2 mm emitting dust cloud. In both cases they are most likely associated with the cloud.
description: 11 pages, 12 Figures, accepted by Astronomy and Astrophysics
Modeling Human Mental States with an Entity-based Narrative Graph
Creators: name: Lee, I-Ta
name: Pacheco, Maria Leonor
name: Goldwasser, Dan
Publisher: name: arXiv
Year: 2021
Subjects: subject: Computation and Language (cs.CL)
subject: Artificial Intelligence (cs.AI)
subject: Machine Learning (cs.LG)
subject: FOS: Computer and information sciences

description: Understanding narrative text requires capturing characters' motivations, goals, and mental states. This paper proposes an Entity-based Narrative Graph (ENG) to model the internal-states of characters in a story. We explicitly model entities, their interactions and the context in which they appear, and learn rich representations for them. We experiment with different task-adaptive pre-training objectives, in-domain training, and symbolic inference to capture dependencies between different decisions in the output space. We evaluate our model on two narrative understanding tasks: predicting character mental states, and desire fulfillment, and conduct a qualitative analysis.
description: Accepted at NAACL 2021
Estimating the proportion of differentially expressed genes in comparative DNA microarray experiments
Creators: name: Cabrera, Javier
name: Yu, Ching-Ray
Publisher: name: arXiv
Year: 2007
Subjects: subject: Methodology (stat.ME)
subject: FOS: Computer and information sciences

description: DNA microarray experiments, a well-established experimental technique, aim at understanding the function of genes in some biological processes. One of the most common experiments in functional genomics research is to compare two groups of microarray data to determine which genes are differentially expressed. In this paper, we propose a methodology to estimate the proportion of differentially expressed genes in such experiments. We study the performance of our method in a simulation study where we compare it to other standard methods. Finally we compare the methods in real data from two toxicology experiments with mice.
description: Published at http://dx.doi.org/10.1214/074921707000000076 in the IMS Lecture Notes Monograph Series (http://www.imstat.org/publications/lecnotes.htm) by the Institute of Mathematical Statistics (http://www.imstat.org)
Slides for: Artificial Intelligence for Smart Grids
Creators: Judith Guenoun
Pierre Mallet
Jean-Philippe Poirrier
Vincent Lefieux
Vincent Debusschere
Publisher: name: IEEE
Year: 2023

Slides for: Artificial Intelligence for Smart Grids
Following the recent publication of Think Smartgrids position paper on AI, the speakers will present the key applications of AI for the benefit of power grids and the major challenges associated with their deployment, then discuss the main recommendations of the paper to overcome certain technical and societal barriers and promote the scaling of AI solutions for networks.

The grid operators RTE and Enedis will also give concrete examples of use cases deployed in France.
Simulation of Open Quantum Dynamics with Bootstrap-Based Long Short-Term Memory Recurrent Neural Network
Creators: name: Lin, Kunni
name: Peng, Jiawei
name: Gu, Feng Long
name: Lan, Zhenggang
Publisher: name: arXiv
Year: 2021
Subjects: subject: Chemical Physics (physics.chem-ph)
subject: Quantum Physics (quant-ph)
subject: FOS: Physical sciences

description: The recurrent neural network with the long short-term memory cell (LSTM-NN) is employed to simulate the long-time dynamics of open quantum system. The bootstrap method is applied in the LSTM-NN construction and prediction, which provides a Monte-Carlo estimation of forecasting confidence interval. Within this approach, a large number of LSTM-NNs are constructed by resampling time-series sequences that were obtained from the early-stage quantum evolution given by numerically-exact multilayer multiconfigurational time-dependent Hartree method. The built LSTM-NN ensemble is used for the reliable propagation of the long-time quantum dynamics and the simulated result is highly consistent with the exact evolution. The forecasting uncertainty that partially reflects the reliability of the LSTM-NN prediction is also given. This demonstrates the bootstrap-based LSTM-NN approach is a practical and powerful tool to propagate the long-time quantum dynamics of open systems with high accuracy and low computational cost.
Grid Edge 23 Tutorial: Reliable and Cost-Effective Solar System Operations and Maintenance (Slides)
Creators: S. Zhao
Publisher: name: IEEE
Year: 2023

As renewable integration and decarbonization expedite and move to the next level, solar energy plays an increasingly important role. A reliable and cost-effective operations and maintenance (O&M) strategy for solar PV systems is critical to achieve lower LCOE and increase PV competitiveness. Sensor driven predictions on asset health enables an improved understanding on asset failure risks and smart just-in-time O&M policies that minimize interruptions and failure instances. In this talk, we proposed an integrated O&M policy that leverage industrial sensor data from Inverters to enhance reliability and operational availability of PV systems.
As renewable integration and decarbonization expedite and move to the next level, solar energy plays an increasingly important role. A reliable and cost-effective operations and maintenance (O&M) strategy for solar PV systems is critical to achieve lower LCOE and increase PV competitiveness. Sensor driven predictions on asset health enables an improved understanding on asset failure risks and smart just-in-time O&M policies that minimize interruptions and failure instances. In this talk, we proposed an integrated O&M policy that leverage industrial sensor data from Inverters to enhance reliability and operational availability of PV systems.
Simultaneous photometric and CARMENES spectroscopic monitoring of fast-rotating M dwarf GJ 3270. Discovery of a post-flare corotating feature
Creators: name: Johnson, E. N.
name: Czesla, S.
name: Fuhrmeister, B.
name: Schoefer, P.
name: Shan, Y.
name: Guillen, C. Cardona
name: Reiners, A.
name: Jeffers, S. V.
name: Lalitha, S.
name: Luque, R.
name: Rodriguez, E.
name: Bejar, V. J. S.
name: Caballero, J. A.
name: Tal-Or, L.
name: Zechmeister, M.
name: Ribas, I.
name: Amado, P. J.
name: Quirrenbach, A.
name: Cortes-Contreras, M.
name: Dreizler, S.
name: Fukui, A.
name: Lopez-Gonzalez, M. J.
name: Hatzes, A. P.
name: Henning, Th.
name: Kaminski, A.
name: Kurster, M.
name: Lafarga, M.
name: Montes, D.
name: Morales, J. C.
name: Murgas, F.
name: Narita, N.
name: Palle, E.
name: Parviainen, H.
name: Pedraz, S.
name: Pollacco, D.
name: Sota, A.
Publisher: name: arXiv
Year: 2021
Subjects: subject: Solar and Stellar Astrophysics (astro-ph.SR)
subject: FOS: Physical sciences

description: Context: Active M dwarfs frequently exhibit large flares, which can pose an existential threat to the habitability of any planet in orbit in addition to making said planets more difficult to detect. M dwarfs do not lose angular momentum as easily as earlier-type stars, which maintain the high levels of stellar activity for far longer. Studying young, fast-rotating M dwarfs is key to understanding their near stellar environment and the evolution of activity Aims: We study stellar activity on the fast-rotating M dwarf GJ 3270. Methods: We analyzed dedicated high cadence, simultaneous, photometric and high-resolution spectroscopic observations obtained with CARMENES of GJ 3270 over 7.7 h, covering a total of eight flares of which two are strong enough to facilitate a detailed analysis. We consult the TESS data, obtained in the month prior to our own observations, to study rotational modulation and to compare the TESS flares to those observed in our campaign. Results: The TESS data exhibit rotational modulation with a period of 0.37 d. The strongest flare covered by our observing campaign released a total energy of about 3.6e32 erg, putting it close to the superflare regime. This flare is visible in the B,V, r, i, and z photometric bands, which allows us to determine a peak temperature of about 10,000 K. The flare also leaves clear marks in the spectral time series. In particular, we observe an evolving, mainly blue asymmetry in chromospheric lines, which we attribute to a post-flare, corotating feature. To our knowledge this is the first time such a feature has been seen on a star other than our Sun. Conclusions: Our photometric and spectroscopic time series covers the eruption of a strong flare followed up by a corotating feature analogous to a post-flare arcadal loop on the Sun with a possible failed ejection of material.
description: A&A, in press
aquaporin
Creators: name: Barani, Hossein
Publisher: name: Zenodo
Year: 2021
Subjects: Aquaporins water channels proteins pores membrane cells facilitating transport water

description: Aquaporins, also called water channels, are channel proteins from a larger family of major intrinsic proteins that form pores in the membrane of biological cells, mainly facilitating transport of water between cells.
The H alpha Galaxy Survey V. The star formation history of late-type galaxies
Creators: name: James, P. A.
name: Prescott, M.
name: Baldry, I. K.
Publisher: name: arXiv
Year: 2008
Subjects: subject: Astrophysics (astro-ph)
subject: FOS: Physical sciences

description: This study of 117 low-redshift Im and Sm galaxies investigates the star formation rates of late-type galaxies, to determine whether they are quasi-continuous or dominated by bursts with quiescent interludes. We analyse the distribution of star formation timescales (stellar masses/star formation rates) for the entire sample, and of gas depletion timescales for those galaxies with gas mass measurements. We find that, on average, the late-type galaxies studied could have produced their total stellar masses by an extrapolation of their current star formation activity over a period of just under a Hubble time. This is not the case for a comparison sample of earlier-type galaxies, even those with disk-dominated morphologies and similar total stellar masses to the late-type galaxies. The earlier-type galaxies are on average forming their stars more slowly at present than the average rate over their past histories. No totally quiescent Im or Sm galaxies are found, and although some evidence of intrinsic variation in the star formation rate with time is found, this is typically less than a factor of 2 increase or decrease relative to the mean level. The Im and Sm galaxies have extensive gas reservoirs and can maintain star formation at the current rate for more than another Hubble time. The average spatial distribution of star formation in the Im galaxies, and to a lesser extent the Sm galaxies, is very similar to that of the older stellar population traced by the red light.
description: 8 pages, 7 figures, accepted for publication in Astronomy & Astrophysics
The fast life of holographic mesons
Creators: name: Myers, Robert C.
name: Sinha, Aninda
Publisher: name: arXiv
Year: 2008
Subjects: subject: High Energy Physics - Theory (hep-th)
subject: FOS: Physical sciences

description: We use holographic techniques to study meson quasiparticles moving through a thermal plasma in N=2 super-Yang-Mills theory, with gauge group SU(N_c) and coupled to N_f flavours of fundamental matter. This holographic approach reliably describes the system at large N_c, large 't Hooft coupling and N_f/N_c<<1. The meson states are destabilized by introducing a small quark density n_q. Spectral functions are used to examine the dispersion relations of these quasiparticles. In a low-momentum regime, the quasiparticles approach a limiting velocity which can be significantly less than the speed of light. In this regime, the widths of the quasiparticles also rise dramatically as their momentum approaches a critical value q_crit. While the spectral functions do not display isolated resonances for q>q_crit, the dispersion relations can be extended into this high-momentum regime by studying the dual quasinormal modes. A preliminary qualitative analysis of these modes suggests that the group velocity rises to the speed of light for q>>q_crit.
description: 42 pages, 23 figures, v2: minor changes, references added, v3: minor changes, references added, final version
Shape Isomerism at N = 40: Discovery of a Proton Intruder in 67Co
Creators: name: Pauwels, D.
name: Ivanov, O.
name: Buscher, J.
name: Cocolios, T. E.
name: Gentens, J.
name: Huyse, M.
name: Korgul, A.
name: Kudryavtsev, Yu.
name: Raabe, R.
name: Sawicka, M.
name: Stefanescu, I.
name: Van de Walle, J.
name: Bergh, P. Van den
name: Van Duppen, P.
name: Walters, W. B.
Publisher: name: arXiv
Year: 2008
Subjects: subject: Nuclear Experiment (nucl-ex)
subject: FOS: Physical sciences

description: The nuclear structure of 67Co has been investigated through 67Fe beta-decay. The 67Fe isotopes were produced at the LISOL facility in proton-induced fission of 238U and selected using resonant laser ionization combined with mass separation. The application of a new correlation technique unambiguously revealed a 496(33) ms isomeric state in 67Co at an unexpected low energy of 492 keV. A 67Co level scheme has been deduced. Proposed spin and parities suggest a spherical (7/2-) 67Co ground state and a deformed first excited (1/2-) state at 492 keV, interpreted as a proton 1p-2h prolate intruder state.
description: 4 pages, 5 figures, preprint submitted to Physical Review Letters
ESSB 17 Tutorial: Energy Storage Tutorial (Slides)
Creators: B. Chalamala
R. Byrne
J. McDowall
V. Sprenkle
C. Searles
B. Chalamala
D. Borneo
C. Vartanian
R. Schubert
Publisher: name: IEEE
Year: 2017

Energy Storage is helping the electric grid reinvent itself, from allowing renewables and electric vehicles to interact with the bulk electric system to establishing distributed energy resources (microgrids, demand response) as well as improving in front of the grid reliability and providing capital deferral. This 4-section technical sessions explore the exciting evolution in both Energy Storage System applications and technologies.
Energy Storage is helping the electric grid reinvent itself, from allowing renewables and electric vehicles to interact with the bulk electric system to establishing distributed energy resources (microgrids, demand response) as well as improving in front of the grid reliability and providing capital deferral. The following technical sessions explore the exciting evolution in both Energy Storage System applications and technologies:
1. The Energy Storage Evolution
2. Major Application Areas for Energy Storage
- In Front of the Grid Applications (e.g. frequency regulation, peak demand deferral, reliability)
- Behind the Meter Applications (e.g. demand response, load shifting, renewables integration)
3, Major Battery Technologies for Energy Storage
- Lithium batteries
- Flow batteries
- Lead-acid batteries
- Other technologies
4. Interconnectivity of the Grid
- The Impact of renewables, microgrids, DER
- The Role of IEEE 1547
- Effect of FERC 1000
Fluid flow in horizontal injection regimes
Creators: name: Shook, Andrew A.
Publisher: name: University of British Columbia
Year: 2010

description: Physical and mathematical modelling studies have been performed to investigate liquid flow driven by a horizontally injected gas. The experimental work consisted of water velocity measurements made at 100 locations within a plexiglass tank. Air was introduced into the tank through a series of side-mounted tuyeres, and the effect of air flowrate on water recirculation velocity was observed. The results of the experiments indicate that the maximum water velocity occurs at the water surface. The effect of bubbles coalescing from adjacent tuyeres was observed with increasing air flowrate, and was found to diminish the water recirculation rate. The mathematical model employed a variant of the Marker and Cell (MAC) technique to compute fluid flow with a free surface. The model predictions indicate that the flow in the experimental tank is largely driven by water flowing across the free surface. Based on this knowledge, qualitative predictions of the flow regimes in a Peirce-Smith copper converter and a zinc slag fuming furnace were made.
Discovery of the most X-ray luminous quasar SRGE J170245.3+130104 at redshift z$\approx5.5$
Creators: name: Khorunzhev, G. A.
name: Meshcheryakov, A. V.
name: Medvedev, P. S.
name: Borisov, V. D.
name: Burenin, R. A.
name: Krivonos, R. A.
name: Uklein, R. I.
name: Shablovinskaya, E. S.
name: Afanasyev, V. L.
name: Dodonov, S. N.
name: Sunyaev, R. A.
name: Sazonov, S. Yu.
name: Gilfanov, M. R.
Publisher: name: arXiv
Year: 2021
Subjects: subject: High Energy Astrophysical Phenomena (astro-ph.HE)
subject: Astrophysics of Galaxies (astro-ph.GA)
subject: FOS: Physical sciences
subject: J.2.3
subject: 85-05

description: SRGE J170245.3+130104 was discovered by the eROSITA telescope aboard the SRG space observatory on March 13-15, 2020 during the first half-year scan of its all-sky X-ray survey. The optical counterpart of the X-ray source was photometrically identified as a distant quasar candidate at $z\approx5.5$. Follow-up spectroscopic observations, done in August/September 2020 with the SCORPIO-II instrument at the BTA 6-m telescope, confirmed that SRGE J170245.3+130104 is a distant quasar at redshift z=5.466. The X-ray luminosity of the quasar during the first half-year scan of the eROSITA all-sky survey was $3.6^{+2.1}_{-1.5}\times 10^{46}$ erg/s (in the 2-10 keV energy range), whereas its X-ray spectrum could be described by a power law with a slope of $Γ=1.8^{+0.9}_{-0.8}$. Six months later (September 13-14, 2020), during the second half-year scan of the eROSITA all-sky survey, the quasar was detected again and its X-ray luminosity had decreased by a factor of 2 (at the $\approx 1.9σ$ confidence level). The SRGE J170245.3+130104 proves to be the most X-ray luminous among all known X-ray quasars at $z>5$. It is also one of the radio-loudest distant quasars (with radio-loudness $R\sim10^3$), which may imply that it is a blazar. In the Appendix, we present the list of all $z>5$ quasars detected in X-rays to date.
description: Preprint: Original russian text: Pis'ma v Astronomichesky Zhurnal 2021, volume 47,Number 3, pages 155-173
One-way quantum computing in a decoherence-free subspace
Creators: name: Tame, M. S.
name: Paternostro, M.
name: Kim, M. S.
Publisher: name: arXiv
Year: 2007
Subjects: subject: Quantum Physics (quant-ph)
subject: FOS: Physical sciences

description: We introduce a novel scheme for one-way quantum computing (QC) based on the use of information encoded qubits in an effective cluster state resource. With the correct encoding structure, we show that it is possible to protect the entangled resource from phase damping decoherence, where the effective cluster state can be described as residing in a Decoherence-Free Subspace (DFS) of its supporting quantum system. One-way QC then requires either single or two-qubit adaptive measurements. As an example where this proposal can be realized, we describe an optical lattice setup where the scheme provides robust quantum information processing. We also outline how one can adapt the model to provide protection from other types of decoherence.
description: 9 pages, 4 figures, RevTeX4
Some general properties of the renormalized stress-energy tensor for static quantum states on (n+1)-dimensional spherically symmetric black holes
Creators: name: Morgan, Dean
name: Thom, Stuart
name: Winstanley, Elizabeth
name: Young, Phil M.
Publisher: name: arXiv
Year: 2007
Subjects: subject: General Relativity and Quantum Cosmology (gr-qc)
subject: FOS: Physical sciences

description: We study the renormalized stress-energy tensor (RSET) for static quantum states on (n+1)-dimensional, static, spherically symmetric black holes. By solving the conservation equations, we are able to write the stress-energy tensor in terms of a single unknown function of the radial co-ordinate, plus two arbitrary constants. Conditions for the stress-energy tensor to be regular at event horizons (including the extremal and ``ultra-extremal'' cases) are then derived using generalized Kruskal-like co-ordinates. These results should be useful for future calculations of the RSET for static quantum states on spherically symmetric black hole geometries in any number of space-time dimensions.
description: 9 pages, no figures, RevTeX4, references added, accepted for publication in General Relativity and Gravitation
Grid Edge 23 Tutorial: Unlocking the Potential of Transactive Energy (Slides)
Creators: A. Kian
Publisher: name: IEEE
Year: 2023

This tutorial will emphasize the potential of Transactive Energy (TE) through the California Flexible Unified Signal for Energy (CALFUSE) program to improve the reliability and efficiency of the power grid with a focus on FERC 2222. TE is a system of energy management that utilizes a combination of economic and control techniques to coordinate the operation of a large number of new intelligent assets, such as distributed solar, energy storage, EVs, and responsive building loads to provide the flexibility needed to operate the power grid reliably and at minimum cost, particularly one filled with intermittent renewable generation. FERC 2222, issued in the United States, aims to remove barriers and provide incentives for integrating distributed energy resources (DERs) into wholesale energy markets. The ruling requires Regional Transmission Organizations (RTOs) and Independent System Operators (ISOs) to develop and implement rules and tariffs that allow DERs to participate in wholesale energy markets. CPUC�s Advanced Strategies for Demand Flexibility Management and Customer DER Compensation introduced the CALFUSE policy roadmap for the state of California in 2022 consists of six key policy elements, all intended to be available on an opt-in basis.� This rule allows several DE assets to aggregate in order to satisfy minimum size
and performance requirements that each may not be able to meet individually.
This tutorial will emphasize the potential of Transactive Energy (TE) through the California Flexible Unified Signal for Energy (CALFUSE) program to improve the reliability and efficiency of the power grid with a focus on FERC 2222. TE is a system of energy management that utilizes a combination of economic and control techniques to coordinate the operation of a large number of new intelligent assets, such as distributed solar, energy storage, EVs, and responsive building loads to provide the flexibility needed to operate the power grid reliably and at minimum cost, particularly one filled with intermittent renewable generation. FERC 2222, issued in the United States, aims to remove barriers and provide incentives for integrating distributed energy resources (DERs) into wholesale energy markets. The ruling requires Regional Transmission Organizations (RTOs) and Independent System Operators (ISOs) to develop and implement rules and tariffs that allow DERs to participate in wholesale energy markets. CPUC�s Advanced Strategies for Demand Flexibility Management and Customer DER Compensation introduced the CALFUSE policy roadmap for the state of California in 2022 consists of six key policy elements, all intended to be available on an opt-in basis.� This rule allows several DE assets to aggregate in order to satisfy minimum size
and performance requirements that each may not be able to meet individually.
Subsystems of Fock Need Not Be Fock: Spatial CP-Semigroups
Creators: name: Bhat, B. V. Rajarama
name: Liebscher, Volkmar
name: Skeide, Michael
Publisher: name: arXiv
Year: 2008
Subjects: subject: Operator Algebras (math.OA)
subject: FOS: Mathematics
subject: 46L55, 46L53, 60J25, 46L08

description: We show that a product subsystem of a time ordered system (that is, a product system of time ordered Fock modules), though type I, need not be isomorphic to a time ordered product system. In that way, we answer an open problem in the classification of CP-semigroups by product systems. We define spatial strongly continuous CP-semigroups on a unital C*-algebra and characterize them as those that have a Christensen-Evans generator.
description: Revised and enlarged version, to appear in Proc. Amer. Math. Soc