cometadata/datacite-rtg-text-other-reclassification-records huggingface dataset:
Similarity-and-Independence-Aware Beamformer with Iterative Casting and Boost Start for Target Source Extraction Using Reference
Creators: name: Hiroe, Atsuo
Publisher: name: arXiv
Year: 2021
Subjects: subject: Audio and Speech Processing (eess.AS)
subject: Sound (cs.SD)
subject: FOS: Electrical engineering, electronic engineering, information engineering
subject: FOS: Computer and information sciences

description: Target source extraction is significant for improving human speech intelligibility and the speech recognition performance of computers. This study describes a method for target source extraction, called the similarity-and-independence-aware beamformer (SIBF). The SIBF extracts the target source using a rough magnitude spectrogram as the reference signal. The advantage of the SIBF is that it can obtain a more accurate signal than the spectrogram generated by target-enhancing methods such as speech enhancement based on deep neural networks. For the extraction, we extend the framework of deflationary independent component analysis (ICA) by considering the similarities between the reference and extracted target sources, in addition to the mutual independence of all the potential sources. To solve the extraction problem by maximum-likelihood estimation, we introduce three source models that can reflect the similarities. The major contributions of this study are as follows. First, the extraction performance is improved using two methods, namely boost start for faster convergence and iterative casting for generating a more accurate reference. The effectiveness of these methods is verified through experiments using the CHiME3 dataset. Second, a concept of a fixed point pertaining to accuracy is developed. This concept facilitates understanding the relationship between the reference and SIBF output in terms of accuracy. Third, a unified formulation of the SIBF and mask-based beamformer is realized to apply the expertise of conventional BFs to the SIBF. The findings of this study can also improve the performance of the SIBF and promote research on ICA and conventional beamformers. Index Terms: beamformer, independent component analysis, source separation, speech enhancement, target source extraction
description: Accepted for publication as a regular paper in the IEEE Open Journal of Signal Processing (2021)
Modulus stabilization of generalized Randall Sundrum model with bulk scalar field
Creators: name: Koley, Ratna
name: Mitra, Joydip
name: SenGupta, Soumitra
Publisher: name: arXiv
Year: 2008
Subjects: subject: High Energy Physics - Theory (hep-th)
subject: FOS: Physical sciences

description: We study the stabilization of inter-brane spacing modulus of generalized warped brane models with a nonzero brane cosmological constant. Employing Goldberger-Wise stabilization prescription of brane world models with a bulk scalar field, we show that the stabilized value of the modulus generally depends on the value of the brane cosmological constant. Our result further reveals that the stabilized modulus value corresponding to a vanishingly small cosmological constant can only resolve the gauge hierarchy problem simultaneously. This in turn vindicates the original Randall-Sundrum model where the 3-brane cosmological constant was chosen to be zero.
description: 12 Pages, 1 figure, Revtex, Version to appear in Euro. Phys. Lett
A Data-Driven Convergence Bidding Strategy Based on Reverse Engineering of Market Participants' Performance: A Case of California ISO
Creators: name: Samani, Ehsan
name: Kohansal, Mahdi
name: Mohsenian-Rad, Hamed
Publisher: name: arXiv
Year: 2021
Subjects: subject: Signal Processing (eess.SP)
subject: Computer Science and Game Theory (cs.GT)
subject: Machine Learning (cs.LG)
subject: General Economics (econ.GN)
subject: FOS: Electrical engineering, electronic engineering, information engineering
subject: FOS: Computer and information sciences
subject: FOS: Economics and business

description: Convergence bidding, a.k.a., virtual bidding, has been widely adopted in wholesale electricity markets in recent years. It provides opportunities for market participants to arbitrage on the difference between the day-ahead market locational marginal prices and the real-time market locational marginal prices. Given the fact that convergence bids (CBs) have a significant impact on the operation of electricity markets, it is important to understand how market participants strategically select their CBs in real-world. We address this open problem with focus on the electricity market that is operated by the California ISO. In this regard, we use the publicly available electricity market data to learn, characterize, and evaluate different types of convergence bidding strategies that are currently used by market participants. Our analysis includes developing a data-driven reverse engineering method that we apply to three years of real-world data. Our analysis involves feature selection and density-based data clustering. It results in identifying three main clusters of CB strategies in the California ISO market. Different characteristics and the performance of each cluster of strategies are analyzed. Interestingly, we unmask a common real-world strategy that does not match any of the existing strategic convergence bidding methods in the literature. Next, we build upon the lessons learned from the existing real-world strategies to propose a new CB strategy that can significantly outperform them. Our analysis includes developing a new strategy for convergence bidding. The new strategy has three steps: net profit maximization by capturing price spikes, dynamic node labeling, and strategy selection algorithm. We show through case studies that the annual net profit for the most lucrative market participants can increase by over 40% if the proposed convergence bidding strategy is used.
description: IEEE Transactions on Power Systems
title: Sur les chemins et les ponts. Itinéraire des Jeunes Filles, le 19 juin 2019 à Rioupéroux
Creators: name: Brayer, Laure
name: Pilon, Emmanuelle
name: Thomas, Rachel
name: Brayer, Laure (Entretien, Retranscription, édition)
name: Thomas, Rachel (Photographie)
name: Pilon, Emmanuelle (Illustration)
Publisher: name: NAKALA - https://nakala.fr (Huma-Num - CNRS)
publisherIdentifier: https://ror.org/04ces3204
publisherIdentifierScheme: ROR
Year: 2022
Subjects: subject: loisirs de plein air
subject: Désertification
subject: Énergie hydraulique
subject: Plantes sauvages
subject: Romanche, Vallée de la (France)
subject: relations familiales
subject: saisons
subject: roman-photo
subject: itinéraire
subject: matériaux de terrain éditorialisés
subject: amitié -- chez l'adolescent
subject: Glanage
subject: Risque
subject: milieu scolaire
subject: habitudes
subject: mode de vie
subject: vie rurale
subject: Fêtes religieuses -- Islam
subject: Sports
subject: Promenade
subject: Repas
subject: Histoires de vie
subject: paysage de l'eau
subject: histoire orale
subject: Marche
subject: Sens et sensations
subject: Mémoires des lieux
subject: Relations homme-animal
subject: Relations homme-plante

description: "Itinéraire réalisé dans le cadre du projet de recherche-création Les Ondes de l’Eau : Mémoires des lieux et du travail dans la vallée de la Romanche. AAU-CRESSON (Laure Brayer, direction scientifique) - Regards des Lieux (Laure Nicoladzé, direction culturelle). 

Quatre jeunes filles habitent à Rioupéroux et se promènent ensemble sur les sentiers de la vallée. Terre de jeux, d’exploration, de découvertes... RPX for ever!
Alors qu’au centre du village la fête battaît son plein, nous les avons accompagnées sur l’itinéraire d’une de leurs balades habituelles. Des Ponants à la montée des Clots, du vieux pont qui bouge à la mosquée bientôt en chantier, des champs de fraises des bois à la piste de luge, nous avons longé la Romanche au rythme de l’enfance et des souvenirs liés aux générations passées."
description: La méthode des itinéraires – méthode d’enquête in-situ développée dans les années 80 et 90 par l'anthropologue Jean-Yves Petiteau dans le cadre de différents travaux sur l'expertise habitante en contexte de projet urbain – a été employée afin de recueillir des récits d’expériences sensibles en les saisissant en même temps que la relation mouvante de la personne et du lieu, au gré d’un parcours de son choix.
Trends Shaping Wind Energy Standards - Slides
Creators: S. Salem
Publisher: name: IEEE
Year: 2019

Trends Shaping Wind Energy Standards - Slides
In recent years, new material and improved design led to development of larger and higher rating wind turbines.  Offshore wind farms have introduced new engineering challenges. Expansion in offshore wind installation led to introducing the concept of winter lighting for the first time in IEC standards in 2018.  Changes in Electrical Industry standards are being made to keep up with the fast pace of renewable energy development. The presentation gives an update on recent trends in wind energy business.   An overview of the recent updates in IEC standards, Cigre working group on winter lightning, and NEC will be provided.
Chandra Observations of the Northeastern Rim of the Cygnus Loop
Creators: name: Katsuda, Satoru
name: Tsunemi, Hiroshi
name: Kimura, Masashi
name: Mori, Koji
Publisher: name: arXiv
Year: 2008
Subjects: subject: Astrophysics (astro-ph)
subject: FOS: Physical sciences

description: We present results from spatially resolved spectral analyses of the northeastern (NE) rim of the Cygnus Loop supernova remnant (SNR) based on two Chandra observations. One pointing includes northern outermost abundance-enhanced regions discovered by recent Suzaku observations, while the other pointing is located on regions with "normal" abundances in the NE rim of the Cygnus Loop. The superior spatial resolving power of Chandra allows us to reveal that the abundance-enhanced region is concentrated in an about 200"-thickness region behind the shock front. We confirm absolute metal abundances (i.e., relative to H) as well as abundance ratios between metals are consistent with those of the solar values within a factor of about 2. Also, we find that the emission measure in the region gradually decreases toward the shock front. These features are in contrast with those of the ejecta fragments around the Vela SNR, which leads us to believe that the abundance enhancements are not likely due to metal-rich ejecta. We suggest that the origin of the plasma in this region is the interstellar medium (ISM). In the "normal" abundance regions, we confirm that abundances are depleted to the solar values by a factor of about 5 that is not expected in the ISM around the Cygnus Loop. Introduction of non-thermal emission in our model fitting can not naturally resolve the abundance-depletion problem. The origin of the depletion still remains as an open question.
description: 18 pages, 6 figures
Electron spin relaxation in cubic GaN quantum dots
Creators: name: Weng, M. Q.
name: Wang, Y. Y.
name: Wu, M. W.
Publisher: name: arXiv
Year: 2008
Subjects: subject: Materials Science (cond-mat.mtrl-sci)
subject: FOS: Physical sciences

description: The spin relaxation time $T_{1}$ in zinc blende GaN quantum dot is investigated for different magnetic field, well width and quantum dot diameter. The spin relaxation caused by the two most important spin relaxation mechanisms in zinc blende semiconductor quantum dots, {i.e.} the electron-phonon scattering in conjunction with the Dresselhaus spin-orbit coupling and the second-order process of the hyperfine interaction combined with the electron-phonon scattering, are systematically studied. The relative importance of the two mechanisms are compared in detail under different conditions. It is found that due to the small spin orbit coupling in GaN, the spin relaxation caused by the second-order process of the hyperfine interaction combined with the electron-phonon scattering plays much more important role than it does in the quantum dot with narrower band gap and larger spin-orbit coupling, such as GaAs and InAs.
description: 8 pages, 5 figures, PRB 79, 2009, in press
Killing tensor and Carter constant for Painleve-Gullstrand form of Lense-Thirring spacetime
Creators: name: Baines, Joshua
name: Berry, Thomas
name: Simpson, Alex
name: Visser, Matt
Publisher: name: arXiv
Year: 2021
Subjects: subject: General Relativity and Quantum Cosmology (gr-qc)
subject: FOS: Physical sciences

description: Recently, the authors have formulated and explored a novel Painleve-Gullstrand variant of the Lense-Thirring spacetime, which has some particularly elegant features -- including unit-lapse, intrinsically flat spatial 3-slices, and some particularly simple geodesics, the "rain" geodesics. At linear level in the rotation parameter this spacetime is indistinguishable from the usual slow-rotation expansion of Kerr. Herein, we shall show that this spacetime possesses a nontrivial Killing tensor, implying separability of the Hamilton-Jacobi equation. Furthermore, we shall show that the Klein-Gordon equation is also separable on this spacetime. However, while the Killing tensor has a 2-form square root, we shall see that this 2-form square root of the Killing tensor is not a Killing-Yano tensor. Finally, the Killing-tensor-induced Carter constant is easily extracted, and now, with a fourth constant of motion, the geodesics become (in principle) explicitly integrable.
description: V1: 17 pages, no figures; V2: some added comments/clarifications, 1 added reference, no physics changes
U.S. Policy Trends Affecting Energy Storage - Slide Presentation
Creators: Will McNamara
Sandia National Laboratories
Publisher: name: IEEE
Year: 2020

Energy storage policy is the focus of this presentation. The following topics are covered in this presentation:  � Historical context of utility-industry policymaking � Overview of federal versus state responsibilities � Federal activity to date � The key energy storage policy issues at the state level � State activities to date � Considerations for state regulators
Energy storage policy is the focus of this presentation.
The following topics are covered in this presentation:
� Historical context of utility-industry policymaking
� Overview of federal versus state responsibilities
� Federal activity to date
� The key energy storage policy issues at the state level
� State activities to date
� Considerations for state regulators
Eötvös branes
Creators: name: Gergely, László Á.
Publisher: name: arXiv
Year: 2008
Subjects: subject: General Relativity and Quantum Cosmology (gr-qc)
subject: Astrophysics (astro-ph)
subject: High Energy Physics - Theory (hep-th)
subject: FOS: Physical sciences

description: The high value of brane tension has a crucial role in recovering Einstein's general relativity at low energies. In the framework of a recently developed formalism with variable brane tension one can pose the question, whether it was always that high? In analogy with fluid membranes, in this paper we allow for temperature dependent brane tension, according to the corresponding law established by Eötvös. For cosmological branes this assumption leads to several immediate consequences: (a) The brane Universe was created at a finite temperature $T_{c}$ and scale factor $a_{\min}$. (b) Both the brane tension and the 4-dimensional gravitational coupling 'constant' increase with the scale factor from zero to asymptotic values. (c) The 4-dimensional cosmological 'constant' evolves with $a$, starting with a huge negative value, passing through zero, finally reaching a small positive value. Such a scale-factor dependent cosmological constant is able to generate a surplus of attraction at small $a$ (as dark matter does) and a late-time repulsion at large $a$ (dark energy). In the particular toy model discussed here the evolution of the brane tension is compensated by energy interchange between the brane and the fifth dimension, such that the continuity equation holds for the cosmological fluid. The resulting cosmology closely mimics the standard model at late times, a decelerated phase being followed by an accelerated expansion. The energy absorption of the brane drives the 5D space-time towards maximal symmetry, becoming Anti de Sitter.
description: v2: 6 pages, 4 figures; expanded introduction and bibliography; published version
Simulating coalescing compact binaries by a new code SACRA
Creators: name: Yamamoto, Tetsuro
name: Shibata, Masaru
name: Taniguchi, Keisuke
Publisher: name: arXiv
Year: 2008
Subjects: subject: General Relativity and Quantum Cosmology (gr-qc)
subject: Astrophysics (astro-ph)
subject: FOS: Physical sciences

description: We report our new code (named SACRA) for numerical relativity simulations in which an adaptive mesh refinement algorithm is implemented. In this code, the Einstein equations are solved in the BSSN formalism with a fourth-order finite differencing, and the hydrodynamic equations are solved by a third-order high-resolution central scheme. The fourth-order Runge-Kutta scheme is adopted for integration in time. To test the code, simulations for coalescence of black hole-black hole (BH-BH), neutron star-neutron star (NS-NS), and black hole-neutron star (BH-NS) binaries are performed, and also, properties of BHs formed after the merger and gravitational waveforms are compared among those three cases. For the simulations of BH-BH binaries, we adopt the same initial conditions as those by Buonanno et al. and compare numerical results. We find reasonable agreement except for a slight disagreement possibly associated with the difference in choice of gauge conditions and numerical schemes. For an NS-NS binary, we performed simulations employing both SACRA and Shibata's previous code, and find reasonable agreement. For a BH-NS binary, we compare numerical results with our previous ones, and find that gravitational waveforms and properties of the BH formed after the merger agree well with those of our previous ones, although the disk mass formed after the merger is less than 0.1% of the total rest mass, which disagrees with the previous result. We also report numerical results of a longterm simulation (with $\sim 4$ orbits) for a BH-NS binary for the first time. All these numerical results show behavior of convergence, and extrapolated numerical results for time spent in the inspiral phase agree with post-Newtonian predictions in a reasonable accuracy.
description: PRD in press. Typos are corrected, and references are added
Power and Energy Magazine - Volume 18: Issue 1 - Jan/Feb 2020: Distribution Management: Its Changing World
Creators: Various
Publisher: name: IEEE
Year: 2020

Volume 18: Issue 1: Jan/Feb 2020: Distribution Management: Its Changing World
This issue comprehensively discusses advanced distribution management systems (ADMSs) by a good mix of authors representing diverse countries, large and small vendors and utilities, and academia. The articles in this issue cover:
- the major changes seen on the distribution system and the need for new tools to plan and operate the system
- how interoperability and standards can enable ADMSs
- lessons learned from utilities in the early, middle, and completed stages of ADMSs
- the use of the latest advanced application tools that improve planning and operations
- an integrated approach for managing faults and outage management
- the latest in research and development of ADMSs from early concepts through demonstration projects
IEEE PES Sharing Knowledge on Electrical Energy Industry''s First Response to COVID-19: Part II – Technical Impacts (Slides)
Creators: Vijay Vittal
Regents’ Professor and Ira A. Fulton Chair Professor
Arizona State University
Prof. Vittal is a Regents’ Professor and the Ira A. Fulton Chair Professor at Arizona State University.  He is a Fellow of the IEEE and a member of the U.S. National Academy of Engineering.  He has been a member of IEEE PES since 1977.  He is presently the IEEE PES Vice President for Technical Activities and is the Chair of the IEEE PES Technical Council.
Publisher: name: IEEE
Year: 2020

This webinar will highlight and present the results of a detailed survey conducted by the IEEE PES Industry Technical Support Leadership Committee (ITSLC) of several electric utilities, RTOs, and TSOs, around the world.  This webinar is a follow-up to the webinar which provided an overview of the results of the survey on May 20, 2020 and specifically addresses the technical impacts of the COVID –19 pandemic.  The webinar will address topics related to the impact of the pandemic on power system operation, asset management, seasonal maintenance and impact on plans for grid modernization and reinforcement.
title: Fragment de l'épaisseur sensible - détail de la carte des mémoires sensibles de la Romanche
Creators: name: Brayer, Laure
name: Hadbi, Ryma
Publisher: name: NAKALA - https://nakala.fr (Huma-Num - CNRS)
publisherIdentifier: https://ror.org/04ces3204
publisherIdentifierScheme: ROR
Year: 2022
Subjects: subject: Cartographie sensible
subject: épaisseur sensible
subject: ambiance
subject: perception de l'espace
subject: sens et sensations
subject: Romanche, Vallée de la (France)
subject: fraicheur
subject: humidité
subject: ambiance sonore
subject: émergence sonore
subject: vent
subject: air
subject: carte sensible

description: Représentation cartographique de la Romanche par AAU-CRESSON (Laure Brayer, Ryma Hadbi, Emmanuelle Pilon) dans le cadre du projet Les Ondes de l'Eau : Mémoires des lieux et du travail dans la vallée de la Romanche. AAU-CRESSON (Laure Brayer, direction scientifique) - Regards des Lieux (Laure Nicoladzé, direction culturelle).

On peut faire l’expérience de la Romanche bien au-delà de son lit. C’est d’abord une rencontre sonore, thermique, aéraulique. Comment traduire sur la carte cette épaisseur sensible ? Cette tentative de représentation s’appuie sur l’itinéraire des jeunes filles (également sur Nakala : https://doi.org/10.34847/nkl.231c4067) et la recherche graphique menée par Emmanuelle Pilon lors de la production de sa version dessinée.

Codification de la présence de la route nationale (son et mouvement en rouge) et de l'épaisseur sensible de la rivière (fraicheur et humidité en bleu, ambiance sonore en beige, et vent en rouge).
2019 IEEE General Meeting 8/7 Panel Presentation: Enhancing Cyber-Physical Resilience of Smart Grid - Design, Operation, and Control
Creators: Y. Hou
W. Sun
Publisher: name: IEEE
Year: 2019

2019 IEEE General Meeting 8/7 Panel Presentation: Enhancing Cyber-Physical Resilience of Smart Grid - Design, Operation, and Control
Critical energy infrastructure has to operate against extreme events, like natural hazards and disasters, cyber intrusion, etc. The interconnection and interdependency among networks and components in cyber-physical system (CPS) present new challenges on resiliency, especially when connected to critical infrastructures. There have been tremendous interests and efforts from researchers in designing and operating resilient CPS against extreme events. The goal of this panel is to present both theoretical advancements in resilient CPS and the application on smart grid with other critical infrastructures. The panel will cover three aspects, 1) Model and Theory, including the resilient design of networked CPS and the infusion of AI and learning in resilience; 2) Resilient Smart Grid, including the operation and control of power electronics-enabled devices, energy storage, and microgrid in coordinated transmission and distribution systems; 3) Smart Grid + X, including the attack defense and disaster recovery in interconnected gas, power, and communication systems.
PRUK UKDS: Introduction to Synthetic Data for Longitudinal Data Managers Workshop
Creators: name: Kasmire, Jools
name: Magder, Cristina
name: UK Data Service
name: Economic and Social Research Council
name: Medical Research Council
name: University of Essex
name: University of Manchester
Publisher: name: Zenodo
Year: 2024
Subjects: Synthetic Data
Longitudinal Data
Research Data Management
Data Sharing
Data Privacy
Ethical Data Practices
Data Training

description: This record contains materials from the interactive workshop, Introduction to Synthetic Data for Longitudinal Data Managers, hosted by the UK Data Service (UKDS) as part of the PRUK UKDS Skills Development for Managing Longitudinal Data for Sharing Project. The workshop aimed to introduce data managers and their colleagues to the fundamentals of synthetic data, including its potential for enhancing data management and sharing in longitudinal and biomedical studies.

The workshop was designed to provide practical and theoretical insights into synthetic data through interactive presentations, live coding demonstrations, and Q&A sessions. The workshop covered:

An introduction to the Skills Development for Managing Longitudinal Data for Sharing project, funded by the Economic and Social Research Council (ESRC) and the Medical Research Council (MRC), as part of an initial Population Research UK (PRUK) initiative.

Key concepts of synthetic data, including its definitions, types, use cases, and generation methods.

A live coding demonstration using Jupyter notebooks to showcase synthetic data generation techniques in Python.

The uploaded files include:

introtosyntheticdata_2024-10-14.pdf

Presentation by Cristina Magder: Introduction to Synthetic Data for Longitudinal Data Managers

introtosyntheticdata_JK_2024-10-14.pdf

Presentation by Dr. Jools Kasmire: Synthetic Data: An Introductory Workshop.

Participants were also provided access to:

Jupyter notebooks used in the live coding session.

Supplementary resources via a GitHub repository (link provided during the workshop).

This workshop was tailored for:

Longitudinal data managers.

Other data professionals interested in leveraging synthetic data for ethical and effective data sharing.

These materials were created under the Skills Development for Managing Longitudinal Data for Sharing project, funded by the Economic and Social Research Council (ESRC) and the Medical Research Council (MRC). They are intended for individuals seeking to improve their research data management practices and for trainers delivering similar content.
Ultrafast-laser-absorption spectroscopy in the mid-infrared for single-shot, calibration-free temperature and species measurements in low- and high-pressure combustion gases
Creators: name: Tancin, Ryan J.
name: Goldenstein, Christopher S.
Publisher: name: arXiv
Year: 2021
Subjects: subject: Applied Physics (physics.app-ph)
subject: FOS: Physical sciences

description: This manuscript presents an ultrafast-laser-absorption-spectroscopy (ULAS) diagnostic capable of providing calibration-free, single-shot measurements of temperature and CO at 5 kHz in combustion gases at low and high pressures. A detailed description of the spectral-fitting routine, data-processing procedures, determination of the instrument response function, and practical considerations for imaging ultrashort pulses in the mid-infrared are presented. The accuracy of the diagnostic was validated at 1000 K and pressures up to 40 bar in a heated-gas cell before being applied to characterize the spatiotemporal evolution of temperature and CO in AP-HTPB and AP-HTPB-aluminum propellant flames at pressures between 1 and 40 bar. The results presented here demonstrate that ULAS in the mid-IR can provide high-fidelity, calibration-free measurements of gas properties with sub-nanosecond time resolution in harsh, high-pressure combustion environments representative of rocket motors.
description: 16 pages, 8 figures
Tirannide e resistenza in Bartolo da Sassoferrato
Creators: name: Moroni, Enrico
Publisher: name: Università degli Studi di Urbino "Carlo Bo"
Year: 2014

description: [Tyranny and Resistance in Bartolus de Saxoferrato] Following the debate on the figure of the tyrant in ancient and medieval thought (Plato, Aristotle, Cicero, Thomas Aquinas), the author argues that the doctrine of Bartolus de Saxoferrato is regarded as a testimony on legal certainty and the classification of forms of illegal power as well as an instrument for its removal. Bartolus was the very first jurist to do research on the requirements of power which must be based not only on a legal title and on legitimate investiture, but must also be exercised within the limits of the law. Bartolus introduces the concept of the right of resistance which will undergo significant development in modern age.
description: Cultura giuridica e diritto vivente, Vol 1 (2014)
Constitutio e costituzione
Creators: name: Giliberti, Giuseppe
Publisher: name: Università degli Studi di Urbino "Carlo Bo"
Year: 2014

description: [Constitutio and Constitution] The term ‘constitutio’, occurring for the first time in Cicero’s Republic in connection with political institutions, cannot be simply translated into ‘constitution’. Many scholars hold indeed that Rome was a “city without a constitution”. Nevertheless, magistrates, assemblies and the Senate were expected to operate on the basis of legal rules, produced by costumes, ‘constitutional conventions’ and legislation. Some of these rules were paramount principles and norms which were theoretically unchangeable. They may be considered as the real ‘constitutional Roman law’. But one has always to bear in mind that their interpretation was influenced by political contingency and depended on the ‘examples’ of the ancestors and of the major politicians of the past.
description: Cultura giuridica e diritto vivente, Vol 1 (2014)
2019 IEEE General Meeting Panel Presentation: Planning and Operation of Future Active Distribution Grids
Creators: M. Herault
D. Gonzalez
T. Plober
Publisher: name: IEEE
Year: 2019

2019 IEEE General Meeting Panel Presentation: Planning and Operation of Future Active Distribution Grids
The German Energy law focuses on the goal of 80% RES in the electricity sector by 2050. The increasing use of distributed generation in LV and MV networks emphasis their contribution to control and stability aspects of the overall energy supply systems. Therefore, new methods and planning tools for allocation the required flexibilities and the development of new control strategies are necessary for enabling an optimal use of RES in the distribution grid. The panel will provide the newest research results in running research programs, pilot and demonstration projects in Europe concerning sector coupling, multi Energy systems, power to X opportunities and smart grid technologies in active distributions grids.
ISGT Europe 2018 - CROSSBOW – CROSS-BOrder management of variable renewable energies and storage units enabling a transnational Wholesale market
Creators: B. Mahkovee
J. Milanovi?
M. Serrano
A. Krkoleva
S. Meir
O. Skrba
Publisher: name: IEEE
Year: 2018

Panel Session
The CROSSBOW project is a platform for enabling the aggregated use of renewable energy resources, demand side management and electrical energy storage in 8 South-East European countries. The project is expected to develop a framework and algorithms that will provide guidance to deploy advanced techniques in order to facilitate an increased cross border power transfer at the national and transnational level, while ensuring at all times network voltage, angular and frequency stability. The session will provide a general overview of the project vision and its expected contributions to facilitate the operational flexibility of transnational power networks with a high penetration of renewable energy resources. It will present about the Wide Area Monitoring System (WAMS/WAMPAC) information, which will facilitate (a) real-time decision making, (b) faster and more recise stability problems localization, (c) identification of important factors for WAMPAC implementation, and (d) automated decision-making systems based on WAMS data for increasing the reliability of the power system. Following that, the panel will discuss about the legislative and regulatory issues to facilitate cross-border power exchange and maximizing the benefit of transnational wholesale market. Furthermore, the discussion will be focused on electrical energy storage resources connected at TSO and DSO networks. Also, the session will give a brief overview of the current situation in the transmission system of Bosnia and Herzegovina as well as future prospects in terms of cross � border management solutions foreseen by the CROSSBOW project.
2019 IEEE General Meeting Misc. 8/8 Panel Presentations v2
Creators: Y. Mou
M. Papic
E. Farantatos
A. Orths
Publisher: name: IEEE
Year: 2019

2019 IEEE General Meeting Misc. 8/8 Panel Presentations v2
This product contains 4 presentations from the following Thursday, August 8th panel sessions:
1. Panel: Impact of High Penetration of Renewable Resources
    Presentation: System Operations with High Penetrations of Renewables
2. Panel: Current Practices and Future Challenges to Power Grid Resilience
     Presentation: Assessing Grid Resilience from a Utility Perspective
3. Panel: Protection Challenges with Increased Penetration of Inverter-Based Generation in the Southeastern Region of the US
     Presentation: Impact of IBRs on Distance Protection, Communication-Assisted Protection and Power Swings Protection
4. Panel: Transmission Infrastructure Development for High Levels of Renewable Penetration
     Presentation: European Ten Year Network DevelopmentPlan
Unveiling U Gem Outbursts: Light Curve Analysis and Exploring Correlations of Outburst Mechanism
Creators: name: Md. Talha Zobair
name: S.M. Fuad Hasan
Publisher: name: Journal of Young Physicist
Year: 2024

description: As a nova-typed cataclysmic star, U Gem exhibits outbursts in brightness and stars like this have left astronomers puzzled about the underlying mechanism. By analyzing U Gem’s light curve (a graph representing its changing magnitude over time which reveals the outburst cycle), spectrums, and the temperature variation of its white dwarf component, we gained a bit of understanding of these outbursts. Using professional data sites like The American Association of Variable Star Observers (AAVSO) and the Cosmic Origins Spectrograph (COS) on the Hubble Space Telescope (HST), we gathered light curves to identify different phases of outbursts as well as collected the visible spectrums and UV spectrums. During the narrow and wide outbursts, it brightened about an average of 4.7 mags, and 5.6667 mags respectively in Vis. band, the radial velocity increased 314.486 ± 11.2 km/s from the quiescence phase to the decline phase, and the WD cools from a temperature of ~41,500 K, 15 days after the peak of the outburst, to ~36,250 K, 56 days after the peak of the outburst. By studying periods of outbursts, we have linked them to material activities in U Gem. The Balmer spectral lines were also investigated to follow the variations in radial velocity during outburst phases. Correlating these phases with variations in radial velocity, derived from spectral line shifts, and white dwarf temperature changes during quiescence provides crucial insights into the system's behavior and helps to understand the dynamics of the accretion disk and the evolution of cataclysmic variable stars. This, I hope, is going to make it easier for others who may wish to study further about cataclysmic variable stars and the intricate dynamics of peculiar stars like this one to do so.
ISGT Europe 2018 - Power quality challenges and solutions in transmission networks with high penetration of power electronics –interim results of EU H2020 MIGRATE
Creators: B. Bla�i?
Dr. B. Kirn
Dr. J. Kilter
A. Souvent
K. Strunz
Publisher: name: IEEE
Year: 2018

Panel Session
One of the focuses of the Migrate project is the evaluation of power quality (PQ) issues expected in future transmission networks due to high penetration of power electronic (PE) devices. PE devices, such as PE-interfaced wind generators, FACTS devices and HVDC links, are indeed one of the major sources of network disturbances (harmonics, flicker, voltage and frequency variations), while also being very sensitive themselves to PQ disturbances. The goal within the Migrate project is to propose a methodology for the evaluation of PQ levels in future power networks, where a high-share of PE devices is expected. The addressed topics include PE-device simulation models for PQ studies at transmission level, PQ measurements with PMUs and a probabilistic methodology for the assessment of disturbance propagation.
HAT-P-9b: A Low Density Planet Transiting a Moderately Faint F star
Creators: name: Shporer, Avi
name: Bakos, Gaspar A.
name: Bouchy, Francois
name: Pont, Frederic
name: Kovacs, Geza
name: Latham, Dave W.
name: Sipocz, Brigitta
name: Torres, Guillermo
name: Mazeh, Tsevi
name: Esquerdo, Gilbert A.
name: Pal, Andras
name: Noyes, Robert W.
name: Sasselov, Dimitar D.
name: Lazar, Jozsef
name: Papp, Istvan
name: Sari, Pal
name: Kovacs, Gabor
Publisher: name: arXiv
Year: 2008
Subjects: subject: Astrophysics (astro-ph)
subject: FOS: Physical sciences

description: We report the discovery of a planet transiting a moderately faint (V=12.3 mag) late F star, with an orbital period of 3.92289 +/- 0.00004 days. From the transit light curve and radial velocity measurements we determine that the radius of the planet is R_p = 1.40 +/- 0.06 R_Jup and that the mass is M_p = 0.78 +/- 0.09 M_Jup. The density of the new planet, rho = 0.35 +/- 0.06 g cm^{-3}, fits to the low-density tail of the currently known transiting planets. We find that the center of transit is at T_c = 2454417.9077 +/- 0.0003 (HJD), and the total transit duration is 0.143 +/- 0.004 days. The host star has M_s = 1.28 +/- 0.13 M_Sun and R_s = 1.32 +/- 0.07 R_Sun.
description: Submitted to ApJ; V2: Replaced with accepted version
The Flattening Metallicity Gradient in the Milky Way's Thin Disk
Creators: name: Vickers, John J.
name: Shen, Juntai
name: Li, Zhao-Yu
Publisher: name: arXiv
Year: 2021
Subjects: subject: Astrophysics of Galaxies (astro-ph.GA)
subject: FOS: Physical sciences

description: We calculate the ages, orbits and phase-space coordinates for a sample of $\sim$4 million LAMOST and Gaia stars. The ages are crossmatched and compared with values from two other popular age catalogs which derive the ages using different methods. Of these $\sim$4 million stars, we select a sample of 1.3 million stars and investigate their radial metallicity gradients (as determined by orbital radii) as a function of their ages. This analysis is performed on various subsets of the data split by chemistry and orbital parameters. We find that commonly used selections for ``thin disk'' stars (such as low-$α$ chemistry or vertically thin orbits) yield radial metallicity gradients which generally grow shallower for the oldest stars. We interpret this as a hallmark feature of radial migration (churning). Constraining our sample to very small orbital Z$_{max}$ (the maximal height of a star's integrated orbit) makes this trend most pronounced. A chemistry-based ``thin disk'' selection of $α$-poor stars displays the same trend, but to a lesser extent. Intruigingly, we find that ``thick disk'' selections in chemistry and Z$_{max}$ reveal a slightly positive radial metallicity gradients which seem similar in magnitude at all ages. This may imply that the thick disk population is well mixed in age, but not in radius. This finding could help constrain conditions during the early epochs of Milky Way formation, and shed light on processes such as the accretion and reaccretion of gasses of different metallicities.
description: 19 Pages, 13 Figures, Accepted to ApJ
2019 IEEE General Meeting 8/7 Panel Presentation: Load Modeling and Simulation in Smart Grids
Creators: J. Zhu
D. Christensen
K. Yamashita
J. Zhao
A. Borghetti
Publisher: name: IEEE
Year: 2019

2019 IEEE General Meeting 8/7 Panel Presentation: Load Modeling and Simulation in Smart Grids
Load modeling and simulation are essential parts of the overall power system modeling and simulations for static as well as dynamic stability assessment. Steady state and dynamic load models have been used in system operations and planning over the decades. Classic load models such as induction motors, ZIP models and exponential models generally cover most of the properties of load components in a power system.
Load models and simulations need to accommodate the rapidly evolving power industry incorporating both conventional and new inverter connected renewable elements. Development in power electronics, smart grid technologies, demand side control and increasing renewable energy uptake have made load modeling an increasingly challenging essential element for system operations and planning to ensure system security while maintain economic efficiency and emission reduction objectives. The rapid deployment of IoT technologies and considered by industry initiative brings new opportunities and challenges for load modeling; together with big data analysis and artificial intelligence methods, data obtained through the IoT sensors enable detailed modeling of loads behind the meters without customer survey. The new load modeling approaches beyond the conventional measurement based or component based are needed.
This panel session will explore the following topics:
a. Load modeling and simulation considering renewable energies
b. Load modeling and simulation considering power electronics
c. Development of measurement based load models
d. Load model development in emerging network and components
e. Power system simulations with various load models
Recognizing indecomposable subcontinua of surfaces from their complements
Creators: name: Curry, Clinton P.
Publisher: name: arXiv
Year: 2008
Subjects: subject: General Topology (math.GN)
subject: FOS: Mathematics
subject: 54F15 (Primary), 57N05 (Secondary)

description: We prove two theorems which allow one to recognize indecomposable subcontinua of closed surfaces without boundary. If $X$ is a subcontinuum of a closed surface $S$, we call the components of $S \setminus X$ the complementary domains of $X$. We prove that a continuum is either indecomposable or the union of two indecomposable continua whenever it has a sequence of distinct complementary domains whose boundaries limit to the continuum in the Hausdorff metric. We define a slightly stronger condition on the complementary domains of a continuum, called the double-pass condition, which we conjecture is equivalent to indecomposability of the continuum. We prove that this is so for continua which are not the boundary of one of their complementary domains.
description: 14 pages
Cryptanalysis of Low-Data Instances of Full LowMCv2
Creators: name: Rechberger, Christian
name: Soleimany, Hadi
name: Tiessen, Tyge
Publisher: name: IACR Transactions on Symmetric Cryptology
Year: 2018

description: LowMC is a family of block ciphers designed for a low multiplicative complexity. The specification allows a large variety of instantiations, differing in block size, key size, number of S-boxes applied per round and allowed data complexity. The number of rounds deemed secure is determined by evaluating a number of attack vectors and taking the number of rounds still secure against the best of these. In this paper, we demonstrate that the attacks considered by the designers of LowMC in the version 2 of the round-formular were not sufficient to fend off all possible attacks. In the case of instantiations of LowMC with one of the most useful settings, namely with few applied S-boxes per round and only low allowable data complexities, efficient attacks based on difference enumeration techniques can be constructed. We show that it is most effective to consider tuples of differences instead of simple differences, both to increase the range of the distinguishers and to enable key recovery attacks. All applications for LowMC we are aware of, including signature schemes like Picnic and more recent (ring/group) signature schemes have used version 3 of the roundformular for LowMC, which takes our attack already into account.
description: IACR Transactions on Symmetric Cryptology, Volume 2018, Issue 3
Power and Energy Magazine - Volume 18: Issue 2 - March/April 2020: Reaching New Heights
Creators: Bruce Fardanesh
Carlos Kleber Arruda
Bruno Meyer
Renchang Dai
Fangxing Li
Jan Alam
Publisher: name: IEEE
Year: 2020

Authors representing diverse regions comprehensively discuss the many advances in transmission system technologies. The articles in this issue address how:
- compact line designs increase the transfer capabilities of transmission facilities, yet use considerably less right of way than traditional construction
- dynamic line ratings can increase transmission line thermal ratings, especially in overhead lines during times of high generation by nearby wind plants
- ultrahigh voltage (±1,000 kV) ac transmission lines and equipment can be designed to transport many gigawatts of power over hundreds of kilometers
- condition-monitoring system applications and analyses manage maintenance and predict equipment failures
- modern protection and control systems improve performance and maintenance practices
- research on the electromagnetic and thermal behaviors of conductors expand our knowledge of cable design and performance
- gases other than sulfur hexafluoride can be used in substations and reduce greenhouse gas emissions
- the ability to monitor the status of huge transmission networks and perform real-time analyses can improve system security
- simulators can integrate modelsof many different devices into large-scale networks to perform complex analyses
- modern controls for battery systems protect equipment while maximizing value streams for the various services these devices can perform.
Authors representing diverse regions comprehensively discuss the many advances in transmission system technologies. The articles in this issue address how:
- compact line designs increase the transfer capabilities of transmission facilities, yet use considerably less right of way than traditional construction
- dynamic line ratings can increase transmission line thermal ratings, especially in overhead lines during times of high generation by nearby wind plants
- ultrahigh voltage (±1,000 kV) ac transmission lines and equipment can be designed to transport many gigawatts of power over hundreds of kilometers
- condition-monitoring system applications and analyses manage maintenance and predict equipment failures
- modern protection and control systems improve performance and maintenance practices
- research on the electromagnetic and thermal behaviors of conductors expand our knowledge of cable design and performance
- gases other than sulfur hexafluoride can be used in substations and reduce greenhouse gas emissions
- the ability to monitor the status of huge transmission networks and perform real-time analyses can improve system security
- simulators can integrate modelsof many different devices into large-scale networks to perform complex analyses
- modern controls for battery systems protect equipment while maximizing value streams for the various services these devices can perform.
PRUK UKDS: Skills Development for Managing Longitudinal Data for Sharing - Society for Longitudinal and Life Course Studies Poster
Creators: name: Smy, Liz
name: Zahid, Hina
name: Magder, Cristina
name: University of Essex
Publisher: name: Zenodo
Year: 2024

description: This record contains the poster presented at the Society for Longitudinal and Life Course Studies (SLLS) Conference 2024, showcasing the PRUK UKDS Skills Development for Managing Longitudinal Data for Sharing Project. The poster highlights the project's goals, methodology, and key findings to date, focusing on enhancing data management practices within the Longitudinal Population Studies (LPS) community.

Aim: To increase skills and expertise in data management and sharing within the LPS community, supporting both social and biomedical sciences.

Approach: A stakeholder-driven process including surveys, workshops, and iterative development of training materials, informed by continuous feedback.

Findings: Identified critical training needs in areas such as metadata, documentation, data cleaning and ethics.

Future directions: Plans for advanced training workshops, publication of materials under open licences, and a comprehensive final report to guide future initiatives.

This project was funded by the Economic and Social Research Council (ESRC) and the Medical Research Council (MRC), part of an initial Population Research UK (PRUK) development phase.

This poster underscores the importance of a collaborative, stakeholder-informed approach to improving data management skills and practices in the LPS community.