cometadata/datacite-rtg-text-other-reclassification-records huggingface dataset:
Benchmarking of artificial intelligence methods for energy generation and consumption forecasting
Creators: Joao Soares
Daniele Linaro
Davide Del Giudice
Samuele Grillo
Angelo Brambilla
Federico Bizzarri
Ahmed Saber
Petr Musilek
Publisher: name: IEEE
Year: 2024

Smart electrical power networks confront several issues, including significant uncertainty owing to the fluctuation and large percentage of renewable power generation, random changes in demand, and ancillary service providers. In the past few years, smart grid competitions have been launched to help mitigating some of the identified issues while raising awareness to the scientific community to improve the state-of-the-art of advanced heuristic optimization, namely related to large-scale problems, uncertainty, and risk management in smart grids. This panel discusses topics related to the series of smart grid competitions launched in the past few years at important conferences in the field of computational intelligence and power systems. Building on the success of the previous editions at IEEE PES, CEC, GECCO, and WCCI, this year's competition addresses the problem of risk-based optimization of aggregators' day-ahead energy resource management (ERM) considering uncertainty associated with the significant penetration of distributed energy resources (DER) and Electric Vehicles (EVs). This testbed was built using the same framework as earlier competitions (therefore, former competitors can adapt their algorithms to this new track quickly). The challenge of this competition is three-fold: address a large-scale problem with a high number of scenarios representing the underlying uncertainty and risk management by modeling extreme events.
Smart electrical power networks confront several issues, including significant uncertainty owing to the fluctuation and large percentage of renewable power generation, random changes in demand, and ancillary service providers. In the past few years, smart grid competitions have been launched to help mitigating some of the identified issues while raising awareness to the scientific community to improve the state-of-the-art of advanced heuristic optimization, namely related to large-scale problems, uncertainty, and risk management in smart grids. This panel discusses topics related to the series of smart grid competitions launched in the past few years at important conferences in the field of computational intelligence and power systems. Building on the success of the previous editions at IEEE PES, CEC, GECCO, and WCCI, this year's competition addresses the problem of risk-based optimization of aggregators' day-ahead energy resource management (ERM) considering uncertainty associated with the significant penetration of distributed energy resources (DER) and Electric Vehicles (EVs). This testbed was built using the same framework as earlier competitions (therefore, former competitors can adapt their algorithms to this new track quickly). The challenge of this competition is three-fold: address a large-scale problem with a high number of scenarios representing the underlying uncertainty and risk management by modeling extreme events.
Hedychrum polite Scopoli
Creators: name: Paukkunen, Juho
name: Rosa, Paolo
name: Soon, Villu
name: Johansson, Niklas
name: Ødegaard, Frode
Publisher: name: Zenodo
Year: 2014
Subjects: Biodiversity
Taxonomy
Animalia
Arthropoda
Insecta
Hymenoptera
Chrysididae
Hedychrum
Hedychrum polite

description: 2. Hedychrum polite Scopoli
This taxon was reported by Bischoff (1910: 445) from Sweden. The origin of the name is unknown. Scopoli never described any such species.
description: Published as part of Paukkunen, Juho, Rosa, Paolo, Soon, Villu, Johansson, Niklas & Ødegaard, Frode, 2014, Faunistic review of the cuckoo wasps of Fennoscandia, Denmark and the Baltic countries (Hymenoptera: Chrysididae), pp. 1-67 in Zootaxa 3864 (1) on page 54, DOI: 10.11646/zootaxa.3864.1.1, http://zenodo.org/record/4930433
Key Negotiation Downgrade Attacks on Bluetooth and Bluetooth Low Energy
Creators: name: Antonioli, Daniele
name: Tippenhauer, Nils Ole
name: Rasmussen, Kasper
Publisher: name: CISPA
Year: 2023

description: Bluetooth (BR/EDR) and Bluetooth Low Energy (BLE) are pervasive wireless technologies specified in the Bluetooth standard. The standard includes key negotiation protocols used to generate long term keys (during pairing) and session keys (during secure connection establishment). In this work, we demonstrate that the key negotiation protocols of Bluetooth and BLE are vulnerable to standard-compliant entropy downgrade attacks. In particular, we show how an attacker can downgrade the entropy of any Bluetooth session key to 1 byte, and of any BLE long term key and session key to 7 bytes. Such low entropy values enable the attacker to brute force Bluetooth long term keys and BLE long term and session keys, and to break all the security guarantees promised by Bluetooth and BLE. As a result of our attacks, an attacker can decrypt all the ciphertext and inject valid ciphertext in any Bluetooth and BLE network. Our key negotiation downgrade attacks are conducted remotely, do not require access to the victims’ devices and are stealthy to the victims. As the attacks are standard-compliant, they are effective regardless of the usage of the strongest Bluetooth and BLE security modes (including Secure Connections), the Bluetooth version, and the implementation details of the devices used by the victims. We successfully attack 38 Bluetooth devices (32 unique Bluetooth chips) and 19 BLE devices from different vendors, using all the major versions of the Bluetooth standard. Finally, we present effective legacy compliant and non-legacy compliant countermeasures to mitigate our key negotiation downgrade attacks.
The Invisible and the Visible: Understanding Intercultural Friendships of Chinese Immigrant Youth
Creators: name: Feng, Xiaohong
Publisher: name: Graduate Studies
Year: 2018
Subjects: subject: Chinese immigrant youth
subject: intercultural friendships
subject: parental socialization
subject: intercultural exclusion
subject: Education--Curriculum and Instruction
subject: Ethnic and Racial Studies

description: This research, a critical ethnographic case study of a western city in Canada, explored the visible and hidden barriers young Chinese immigrants face when forming and developing friendships with non-immigrant peers. Qualitative data collection methods included 74 interviews with Chinese immigrant youth (16- to 18-year-old newcomers, Generation 1.5, and Generation 2), their parents, and teachers; school and home observations; documents; and autoethnography. By employing the theoretical perspective of postcolonial theories, critical pedagogy, and acculturation to contextualize the historical impact of social inequalities, cultural hegemony, and linguistic dominance, the research revealed the lived experiences of the marginalized in schools and sought both to disrupt hidden forms of racism and to build bridges for sociocultural integration in schools. The research presented here recognizes the dynamic dialectic nature of intercultural friendship-building set within a pluralistic world that is in cultural and social conflict. Barriers to intercultural relationships fall into three main categories: (a) cross-cultural exclusions, including polite exclusion, lack of acceptance, ignorance due to lack of contact, bullying, intangible psychological distance, and local cultural superiority; (b) family cultural influence, including parental ideologies, educational beliefs and values, and survival pressures; and (c) beyond cultural differences, including parents’ inability to be role models, curricular content, teaching strategies, and the hidden curriculum. Given the diversity of Canadian classrooms, a critical understanding of intercultural friendships is crucial to the ongoing achievement of social equity. This research thus takes a positive step towards intercultural communication, understanding, and respect.
Initial state dependence of the quench dynamics in integrable quantum systems
Creators: name: Rigol, Marcos
name: Fitzpatrick, Mattias
Publisher: name: arXiv
Year: 2011
Subjects: subject: Statistical Mechanics (cond-mat.stat-mech)
subject: Quantum Gases (cond-mat.quant-gas)
subject: Quantum Physics (quant-ph)
subject: FOS: Physical sciences

description: We identify and study classes of initial states in integrable quantum systems that, after the relaxation dynamics following a sudden quench, lead to near-thermal expectation values of few-body observables. In the systems considered here, those states are found to be insulating ground states of lattice hard-core boson Hamiltonians. We show that, as a suitable parameter in the initial Hamiltonian is changed, those states become closer to Fock states (products of single site states) as the outcome of the relaxation dynamics becomes closer to the thermal prediction. At the same time, the energy density approaches a Gaussian. Furthermore, the entropy associated with the generalized canonical and generalized grand-canonical ensembles, introduced to describe observables in integrable systems after relaxation, approaches that of the conventional canonical and grand-canonical ensembles. We argue that those classes of initial states are special because a control parameter allows one to tune the distribution of conserved quantities to approach the one in thermal equilibrium. This helps in understanding the approach of all the quantities studied to their thermal expectation values. However, a finite-size scaling analysis shows that this behavior should not be confused with thermalization as understood for nonintegrable systems.
description: 11 pages, 12 figures, as published
Ensuring Resource Adequacy: Evolving Metrics and Criteria
Creators: Genevieve de Mijolla
Dor Hirsh Bar Gai
Paolo Mastropietro
Patricio Rocha Garrido
Debbie Lew
Publisher: name: IEEE
Year: 2024

Emerging technologies and uncertainty drivers such as increasing levels of variable renewable energy, more frequent extreme events and weather-dependent correlated thermal outages, and the prevalence of energy-limited resources such as storage and demand response are shifting the nature of resource adequacy assessment. These changes are leading many practitioners to consider a wider range of resource adequacy metrics and criteria, including energy-based, tail-risk, economic, and multi-metric adequacy criteria. This panel will explore the motivations and implications of such changes across a range of different power systems.
Emerging technologies and uncertainty drivers such as increasing levels of variable renewable energy, more frequent extreme events and weather-dependent correlated thermal outages, and the prevalence of energy-limited resources such as storage and demand response are shifting the nature of resource adequacy assessment. These changes are leading many practitioners to consider a wider range of resource adequacy metrics and criteria, including energy-based, tail-risk, economic, and multi-metric adequacy criteria. This panel will explore the motivations and implications of such changes across a range of different power systems.
Identifying Domains of Applicability of Machine Learning Models for Materials Science
Creators: name: Sutton, Christopher
name: Boley, Mario
name: Ghiringhelli, Luca M.
name: Rupp, Matthias
name: Vreeken, Jilles
name: Scheffler, Matthias
Publisher: name: CISPA
Year: 2023

description: Although machine learning (ML) models promise to substantially accelerate the discovery of novel materials, their performance is often still insufficient to draw reliable conclusions. Improved ML models are therefore actively researched, but their design is currently guided mainly by monitoring the average model test error. This can render different models indistinguishable although their performance differs substantially across materials, or it can make a model appear generally insufficient while it actually works well in specific sub-domains. Here, we present a method, based on subgroup discovery, for detecting domains of applicability (DA) of models within a materials class. The utility of this approach is demonstrated by analyzing three state-of-the-art ML models for predicting the formation energy of transparent conducting oxides. We find that, despite having a mutually indistinguishable and unsatisfactory average error, the models have DAs with distinctive features and notably improved performance.
Basic Estimates of Stability Rate for One-dimensional Diffusions
Creators: name: Chen, Mu-Fa
Publisher: name: arXiv
Year: 2011
Subjects: subject: Probability (math.PR)
subject: Classical Analysis and ODEs (math.CA)
subject: Functional Analysis (math.FA)
subject: Spectral Theory (math.SP)
subject: FOS: Mathematics
subject: 60J60, 34L15, 26D10, 46E35

description: In the context of one-dimensional diffusions, we present basic estimates (having the same lower and upper bounds with a factor of 4 only) for four Poincaré-type (or Hardy-type) inequalities. The derivation of two estimates have been open problems for quite some time. The bounds provide exponentially ergodic or decay rates. We refine the bounds and illustrate them with typical examples.
description: 24 pages
title: CERN Yellow Reports: Conference Proceedings, Vol. 9 (2020): Proceedings of the ICFA mini-Workshop on Mitigation of Coherent Beam Instabilities in Particle Accelerators, Zermatt, Switzerland, 23–27 September 2019
title: Proceedings of the ICFA mini-Workshop on Mitigation of Coherent Beam Instabilities in Particle Accelerators, Zermatt, Switzerland, 23–27 September 2019
titleType: AlternativeTitle
Creators: name: CERN Yellow Reports: Conference Proceedings
Publisher: name: CERN Yellow Reports: Conference Proceedings
Year: 2020

description: Editors: E. Métral, G. Rumolo, T. Pieloni This ICFA Mini-Workshop on “Mitigation of Coherent Beam Instabilities in Particle Accelerators" (MCBI2019) focused on all the mitigation methods for all the coherent beam instabilities, reviewing in detail the theories (and underlying assumptions), simulations and measurements on one hand, but on the other hand trying to compare the different mitigation methods (e.g. with respect to other effects such as beam lifetime) to provide the simplest and more robust solutions for the day-to-day operation of the machines. ISBN 978-92-9083-588-2 (paperback), ISBN 978-92-9083-589-9 (PDF)
Decarbonization and Resilience: Challenges and Lessons Learned
Creators: Alireza Ghassemian
Nader Samaan
Emily Barrett
Paul Hines
Ian Bail
Publisher: name: IEEE
Year: 2024

Power systems are undergoing a swift transformation as they strive to integrate renewable energy resources, which are frequently located in remote areas rich in wind and solar potential, while also addressing the challenges posed by extreme events such as storms, heatwaves, and wildfires. Resilience evaluation have become a vital part in planning-based studies particularly composite generation and transmission reliability. Some of the existing challenges and associated tradeoffs are; (1) assessing required transmission system upgrades to cope with added renewable energy projects; (2) proper modeling of HVDC and MTDC system in resilience evaluation studies; and (3) consideration of inter- and intra-regional transmission limitations in energy market.  This panel will bring experts and researchers from grid operators, energy regulators, utilities, and research institutes to discuss, share lessons-learned, provide perspectives on current practices to evaluate and improve resilience of electric power grid to achieve new decarbonization initiatives.
Power systems are undergoing a swift transformation as they strive to integrate renewable energy resources, which are frequently located in remote areas rich in wind and solar potential, while also addressing the challenges posed by extreme events such as storms, heatwaves, and wildfires. Resilience evaluation have become a vital part in planning-based studies particularly composite generation and transmission reliability. Some of the existing challenges and associated tradeoffs are; (1) assessing required transmission system upgrades to cope with added renewable energy projects; (2) proper modeling of HVDC and MTDC system in resilience evaluation studies; and (3) consideration of inter- and intra-regional transmission limitations in energy market.  This panel will bring experts and researchers from grid operators, energy regulators, utilities, and research institutes to discuss, share lessons-learned, provide perspectives on current practices to evaluate and improve resilience of electric power grid to achieve new decarbonization initiatives.
Systematic analysis of the $ B_s\rightarrow f_0 \ell^+\ell^- $ in the universal extra dimension
Creators: name: Bashiry, V.
name: Azizi, K.
Publisher: name: arXiv
Year: 2011
Subjects: subject: High Energy Physics - Phenomenology (hep-ph)
subject: FOS: Physical sciences

description: Using form factors enrolled to the transition matrix elements and calculated via light-cone QCD sum rules including next-to-leading order corrections in the strong coupling constant, we provide a systematic analysis of the $ B_s\rightarrow f_0 (980)\ell^+\ell^- $ both in the standard and universal extra dimension models. In particular, we discuss sensitivity of the differential branching ratio and various double lepton polarization asymmetries on the compactification factor of extra dimension and show how the results of the extra dimension model deviate from the standard model predictions. The order of branching ratio makes this decay mode possible to be checked at LHCb in near future.
description: 14 Pages and 16 Figures
The $q$-Wakimoto Realization of the Superalgebras $U_q(\hat{sl}(N|1))$ and $U_{q,p}(\hat{sl}(N|1))$
Creators: name: Kojima, Takeo
Publisher: name: arXiv
Year: 2012
Subjects: subject: Exactly Solvable and Integrable Systems (nlin.SI)
subject: Mathematical Physics (math-ph)
subject: Quantum Algebra (math.QA)
subject: FOS: Physical sciences
subject: FOS: Mathematics

description: We give bosonizations of the superalgebras $U_q(\hat{sl}(N|1))$ and $U_{q,p}(\hat{sl}(N|1))$ for an arbitrary level $k \in {\bf C}$. We introduce the submodule by the $ξ$-$η$ system, that we call the $q$-Wakimoto realization.
description: 10 pages, LaTEX, Proceedings of the 9-th International Workshop "Lie Theory and Its Application in Physics (LT-9), 20-26 June 2011, Varna, Bulgaria", Springer
In vivo assessments of patellofemoral kinematics and contact areas with applications to osteoarthritis
Creators: name: McWalter, Emily Jane
Publisher: name: University of British Columbia
Year: 2010

description: Mechanical-based treatment strategies for patellofemoral osteoarthritis (OA) have had limited success. This is likely because the magnitude of mechanical change required to improve clinical symptoms has not been quantified because, until recently, the tools required to do so were not available. The aim of this thesis was to develop and characterize MRI-based assessments of in vivo joint mechanics (three-dimensional patellar kinematics and contact areas) that can be used in studies of patellofemoral OA. Three studies of three-dimensional patellar kinematics were carried out. Study 1 examined the effect of load on kinematic measurements. The results showed that increased load caused patellae to flex, tilt medially and translate proximally and posteriorly (p<0.05). In Study 2, the need to carry out a full kinematic assessment through the range of knee flexion was assessed. The results showed that a single, widely used measure of patellar position and orientation was an inadequate surrogate marker and a full kinematic assessment was required. In Study 3, the effect of a patellofemoral brace on kinematics was examined in patients with patellofemoral OA. The brace caused the patellae to extend, spin externally, tilt medially and translate distally, medially and posteriorly (p<0.05). In Study 4, a method of assessing contact areas using an MRI scan of less than a minute was developed and yielded measurements with errors similar to methods employing significantly longer scans. This method can also be used in series with the kinematic method, allowing kinematics and contact areas to be assessed simultaneously. In Study 5, a simple, patient specific, kinematics-driven multibody model to predict contact area was developed and validated. The model showed good agreement with direct measures of contact area from MRI but was sensitive to the proximity threshold value used to define contact and to the kinematic input data. This model may be useful in studies where direct measures of contact area are not possible. The MRI-based tools for assessing patellofemoral joint mechanics in vivo characterized and validated in this thesis can potentially be used to identify the magnitude of mechanical change required to improve symptoms in patients with patellofemoral OA.
Performance Specifications and Validation Methods for Grid-Forming Inverter-based Resources
Creators: Nilesh Modi
Deepak Ramasubramanian
Aung Thant
Fred Huang
Julia Matevosyan
Andrew Isaacs
Shahil Shah
Patrick Dalton
Lukas Unruh
Olli-Pekka Janh
Publisher: name: IEEE
Year: 2024

As grid-forming (GFM) inverters gain momentum as a key contributor to power systems stability, leading grid operators are proposing minimum performance specifications for GFM. Meanwhile, methods of validating GFM performance are also being proposed and tested. This panel session will focus on GFM performance specifications and proposed methods of GFM performance verification in different regions of the world.  We will provide an update on GFM specifications in use and in development around the world; identify similarities, differences, and best practices in those specifications; and identify potential methods of GFM performance verification. By doing so, we will facilitate coordination and exchange of ideas for defining and confirming the desired performance GFM inverters, which are emerging as a foundational technology for the ongoing energy transition.
As grid-forming (GFM) inverters gain momentum as a key contributor to power systems stability, leading grid operators are proposing minimum performance specifications for GFM. Meanwhile, methods of validating GFM performance are also being proposed and tested. This panel session will focus on GFM performance specifications and proposed methods of GFM performance verification in different regions of the world.  We will provide an update on GFM specifications in use and in development around the world; identify similarities, differences, and best practices in those specifications; and identify potential methods of GFM performance verification. By doing so, we will facilitate coordination and exchange of ideas for defining and confirming the desired performance GFM inverters, which are emerging as a foundational technology for the ongoing energy transition.
Water and Chloride Mass Budgets: Quantifying Groundwater Fluxes for a Permanently Flooded Wetland in the Canadian Prairies
Creators: name: Felske, Alanna
Publisher: name: Graduate Studies
Year: 2018
Subjects: subject: wetland
subject: water balance
subject: chloride mass balance
subject: Hydrology

description: Wetlands play a key role in governing the movement and storage of water and solutes across the Canadian prairies. Hydraulic, thermal and chemical methods were used to assess the water balance of a permanently flooded, prairie wetland pond. Results indicate net groundwater inflow was a vital component of the pond water budget. Chloride mass balance (CMB) and horizontal Darcy flux calculations revealed that March 10 to May 31, 2016 was a critical time for groundwater inflows. Transpiration by riparian vegetation induced seepage of pond water, causing the lateral mobilization of chloride to some riparian margins. CMB results indicate that mass transfer between the pond sediments and water occurs in response to ion-exclusion over winter and dilution from snowmelt in spring. Understanding the mechanisms driving wetland groundwater flow systems in the Canadian prairies is crucial to determining how these processes may be affected by land use practices and climatic change.
Transrational Numbers as an Abstract Data Type
Creators: name: Bergstra, Jan A.
name: Tucker, John V.
Publisher: name: figshare
Year: 2020
Subjects: subject: Algebra
subject: 10107 Mathematical Logic, Set Theory, Lattices and Universal Algebra
subject: FOS: Mathematics

description: Transmathematica archive. Please cite as:
J.A. Bergstra and J.V. Tucker, "Transrational Numbers as an Abstract Data Type", Transmathematica, ISSN 2632-9212, pp 1-29, 16 December 2020, https://doi.org/10.36285/tm.47
Chrysis scutata Fabricius 1775
Creators: name: Paukkunen, Juho
name: Rosa, Paolo
name: Soon, Villu
name: Johansson, Niklas
name: Ødegaard, Frode
Publisher: name: Zenodo
Year: 2014
Subjects: Biodiversity
Taxonomy
Animalia
Arthropoda
Insecta
Hymenoptera
Masaridae
Chrysis
Chrysis scutata

description: 3. Chrysis scutata (without author)
This taxon was reported by Kawall (1866b: 155) from Livonia, Puze. The origin of the name is unknown and it should be considered as a nomen nudum.
description: Published as part of Paukkunen, Juho, Rosa, Paolo, Soon, Villu, Johansson, Niklas & Ødegaard, Frode, 2014, Faunistic review of the cuckoo wasps of Fennoscandia, Denmark and the Baltic countries (Hymenoptera: Chrysididae), pp. 1-67 in Zootaxa 3864 (1) on page 54, DOI: 10.11646/zootaxa.3864.1.1, http://zenodo.org/record/4930433
Power Systems and Equipment Resilience to GIC
Creators: Bob Arritt
Afshin Rezaei-Zare
Santi  Marsal Vinadé
Saeed Manshadi
Chunming Liu
Dennis Albert
Philipp Schachinger
Alexander Fröhlich
Publisher: name: IEEE
Year: 2024

As our reliance on power systems grows, it becomes imperative to ensure their resilience against natural phenomena including Geomagnetic Disturbances (GMD) and its by-product, Geomagnetically Induced Current (GIC). GIC can overheat transformers, cause voltage instability, and, in extreme cases, lead to widespread power outages. However, the degree of vulnerability to GIC is not well understood, and it needs the sharing of various expertise in different fields. In this panel, experts from academia and industry will share their experience and the latest developed techniques in assessing and improving power system and equipment resilience to GIC. This panel aims to bridge the gap between research and application. It will help power system operators, utilities, manufacturers, and researchers collaborate and develop innovative strategies to safeguard our power systems and equipment from the potentially devastating impacts of GICs and help comply with NERC TPL-007 standard.
As our reliance on power systems grows, it becomes imperative to ensure their resilience against natural phenomena including Geomagnetic Disturbances (GMD) and its by-product, Geomagnetically Induced Current (GIC). GIC can overheat transformers, cause voltage instability, and, in extreme cases, lead to widespread power outages. However, the degree of vulnerability to GIC is not well understood, and it needs the sharing of various expertise in different fields. In this panel, experts from academia and industry will share their experience and the latest developed techniques in assessing and improving power system and equipment resilience to GIC. This panel aims to bridge the gap between research and application. It will help power system operators, utilities, manufacturers, and researchers collaborate and develop innovative strategies to safeguard our power systems and equipment from the potentially devastating impacts of GICs and help comply with NERC TPL-007 standard.
On the Spectroscopic Classes of Novae in M33
Creators: name: Shafter, A. W.
name: Darnley, M. J.
name: Bode, M. F.
name: Ciardullo, R.
Publisher: name: arXiv
Year: 2012
Subjects: subject: Astrophysics of Galaxies (astro-ph.GA)
subject: FOS: Physical sciences

description: We report the initial results from an ongoing multi-year spectroscopic survey of novae in M33. The survey resulted in the spectroscopic classification of six novae (M33N 2006-09a, 2007-09a, 2009-01a, 2010-10a, 2010-11a, and 2011-12a) and a determination of rates of decline (t_2 times) for four of them (2006-09a, 2007-09a, 2009-01a, and 2010-10a). When these data are combined with existing spectroscopic data for two additional M33 novae (2003-09a and 2008-02a) we find that 5 of the 8 novae with available spectroscopic class appear to be members of either the He/N or Fe IIb (hybrid) classes, with only two clear members of the Fe II spectroscopic class. This initial finding is very different from what would be expected based on the results for M31 and the Galaxy where Fe II novae dominate, and the He/N and Fe IIb classes together make up only ~20% of the total. It is plausible that the increased fraction of He/N and Fe IIb novae observed in M33 thus far may be the result of the younger stellar population that dominates this galaxy, which is expected to produce novae that harbor generally more massive white dwarfs than those typically associated with novae in M31 or the Milky Way.
description: 30 pages; 5 figures; accepted for publication in the Astrophysical Journal; second version corrects some references to Table 3, and a few typos
DER-enhanced Sustainable Transportation Electrification and Power Grid Modernization
Creators: Han  La Poutré
Koen Kok
Jorge Poveda
Jose Luis Rueda Torres
Yashen  Lin
Kwang Y.  Lee
Publisher: name: IEEE
Year: 2024

To satisfy the increasing demand for energy and fulfill the Paris Agreement, power systems worldwide are pursuing an accelerated massive replacement of conventional power plants by renewable power plants, and a higher integration between electrical power systems and other energy systems. This entails unprecedented variable operating conditions, and high risk of disruptions and blackouts in future with high societal costs. This panel is devoted to discuss emerging methods for the application of multi-agent systems on the assessment and enhancement of the technical and economic performace for future low intertia multi-energy systems. Thinking about the practical deployment of such methods in academia and industry, several implementation challenges, such as computational efficiency, data requirements, robustness, etc., will be discussed.
To satisfy the increasing demand for energy and fulfill the Paris Agreement, power systems worldwide are pursuing an accelerated massive replacement of conventional power plants by renewable power plants, and a higher integration between electrical power systems and other energy systems. This entails unprecedented variable operating conditions, and high risk of disruptions and blackouts in future with high societal costs. This panel is devoted to discuss emerging methods for the application of multi-agent systems on the assessment and enhancement of the technical and economic performace for future low intertia multi-energy systems. Thinking about the practical deployment of such methods in academia and industry, several implementation challenges, such as computational efficiency, data requirements, robustness, etc., will be discussed.
Inputs from Hell: Learning Input Distributions for Grammar-Based Test Generation
Creators: name: Soremekun, Ezekiel
name: Pavese, Esteban
name: Havrikov, Nikolas
name: Grunske, Lars
name: Zeller, Andreas
Publisher: name: CISPA
Year: 2023

description: Grammars can serve as producers for structured test inputs that are syntactically correct by construction. A probabilistic grammar assigns probabilities to individual productions, thus controlling the distribution of input elements. Using the grammars as input parsers, we show how to learn input distributions from input samples, allowing to create inputs that are similar to the sample; by inverting the probabilities, we can create inputs that are dissimilar to the sample. This allows for three test generation strategies: 1) “Common inputs” – by learning from common inputs, we can create inputs that are similar to the sample; this is useful for regression testing. 2) “Uncommon inputs” – learning from common inputs and inverting probabilities yields inputs that are strongly dissimilar to the sample; this is useful for completing a test suite with “inputs from hell” that test uncommon features, yet are syntactically valid. 3) “Failure-inducing inputs” – learning from inputs that caused failures in the past gives us inputs that share similar features and thus also have a high chance of triggering bugs; this is useful for testing the completeness of fixes. Our evaluation on three common input formats (JSON, JavaScript, CSS) shows the effectiveness of these approaches. Results show that “common inputs” reproduced 96% of the methods induced by the samples. In contrast, for almost all subjects (95%), the “uncommon inputs” covered significantly different methods from the samples. Learning from failure-inducing samples reproduced all exceptions (100%) triggered by the failure-inducing samples and discovered new exceptions not found in any of the samples learned from.
Renewable Energy and Grid Integration with GFL and GFM Inverters
Creators: Chuck  Wells
Jing Wang
Yunjie  Gu
Shuhui Li
Publisher: name: IEEE
Year: 2024

The electricity grid is going through a new transformation as synchronous machines are being substituted with renewable energy resources. These renewable energy resources are typically connected to the grid via grid following (GFL) inverters, which reduces the inertia and strength of the grid. As a result, electric utilities require more renewable energy sources connected to the grid via grid forming (GFM) inverters. The coexistence of the GFL and GFM inverters with increased renewable resources has brought broad research topics. This panel brings industry and academic researchers together to discuss the challenges and opportunities resulting from the transition of modern electric power systems with increased renewables. These include issues related to modeling, control, reliability, resilience, etc. of electric power systems associated with the transition.
The electricity grid is going through a new transformation as synchronous machines are being substituted with renewable energy resources. These renewable energy resources are typically connected to the grid via grid following (GFL) inverters, which reduces the inertia and strength of the grid. As a result, electric utilities require more renewable energy sources connected to the grid via grid forming (GFM) inverters. The coexistence of the GFL and GFM inverters with increased renewable resources has brought broad research topics. This panel brings industry and academic researchers together to discuss the challenges and opportunities resulting from the transition of modern electric power systems with increased renewables. These include issues related to modeling, control, reliability, resilience, etc. of electric power systems associated with the transition.
title: Engführungen. Celans etho-poetisches Schreiben „nach“ (und als Teil) der Natur.
title: Ein Essay
titleType: Subtitle
Creators: name: Miglio, Camilla
Publisher: name: Trier University
Year: 2021

description: This article investigates the relation between nature, ethics, and poetics in the work of Paul Celan, using „Engführung“ [“Stretto”] as a starting point. The readings from Celan’s library testify to his careful rethinking of what “reality” means. Applying the terminology and research of geology, physics, and, in particular, quantum mechanics, opens up an interpretative horizon for Celan’s poetry that can be configured according to the laws of entanglement as well as the form of a multidimensional ‚Raumgitter‘. The human and ethical elements of intentionality and being-in-the-world are not obliterated but rather subordinated to the natural itself. Celan goes beyond the idea of a subject-observer of the world-as-object and offers us a perspective in which language, as well as humanity and intentionality (poetic and otherwise), is merely one cosmic manifestation – part of nature itself. Language, like nature, shows different and changing states of being. It can be metamorphic but also sedimentary; conglomerate but also fluid like the elements present in nature. It is not a metaphorical analogy but a changing material state. It is non-local, dynamic, and provisional, like the relationality of quantum aggregations. Writing ‚nach der Natur‘ is, for Celan, who makes the knowledge and vocabulary of the natural sciences his own, to recover this metamorphic, provisional dimension of language – inside and outside time, probabilistic, invisible at a macroscopic level. By writing in and as nature in this way, poetry resists the destruction of what “happened” [geschehen] at the camps in the most devastating way.
Person Recognition in Personal Photo Collections
Creators: name: Oh, Seong Joon
name: Benenson, Rodrigo
name: Fritz, Mario
name: Schiele, Bernt
Publisher: name: CISPA
Year: 2023

description: People nowadays share large parts of their personal lives through social media. Being able to automatically recognise people in personal photos may greatly enhance user convenience by easing photo album organisation. For human identification task, however, traditional focus of computer vision has been face recognition and pedestrian re-identification. Person recognition in social media photos sets new challenges for computer vision, including non-cooperative subjects (e.g., backward viewpoints, unusual poses) and great changes in appearance. To tackle this problem, we build a simple person recognition framework that leverages convnet features from multiple image regions (head, body, etc.). We propose new recognition scenarios that focus on the time and appearance gap between training and testing samples. We present an in-depth analysis of the importance of different features according to time and viewpoint generalisability. In the process, we verify that our simple approach achieves the state of the art result on the PIPA [1] benchmark, arguably the largest social media based benchmark for person recognition to date with diverse poses, viewpoints, social groups, and events. Compared the conference version of the paper [2] , this paper additionally presents (1) analysis of a face recogniser (DeepID2+ [3] ), (2) new method naeil2 that combines the conference version method naeil and DeepID2+ to achieve state of the art results even compared to post-conference works, (3) discussion of related work since the conference version, (4) additional analysis including the head viewpoint-wise breakdown of performance, and (5) results on the open-world setup.
European Energy Projects and Grid Development Activities
Creators: Aleksandar  Momirovski
Ervin Dr. Spahic
Jody Verboomen
Olga Grbovic
Lasse Kleinjohann
Georg Batz
Janja Dolenc
Bruno  Jurisic
Goran Levacic
Uros Kerin
Simon Tot
Willem Leterme
Publisher: name: IEEE
Year: 2024

This panel session will focus on the numerous demonstration and deployment projects currently being carried out in the European Union. These projects are crucial for the safe and reliable operation of the interconnected power system of ENTSO-E. They have a significant impact on the national and international electrical energy infrastructure, enhance the European energy market, and contribute to the achievement of the EU's energy policy objectives. Some of these projects aim to facilitate the integration of renewable energy sources, while others seek to improve the interconnection and efficiency of existing power systems. The session will feature technical presentations from industry experts, utility professionals, and academia, providing an opportunity for professionals and stakeholders in the power engineering community to discuss recent advancements in the development of the European power grid and share experiences and best practices.
This panel session will focus on the numerous demonstration and deployment projects currently being carried out in the European Union. These projects are crucial for the safe and reliable operation of the interconnected power system of ENTSO-E. They have a significant impact on the national and international electrical energy infrastructure, enhance the European energy market, and contribute to the achievement of the EU's energy policy objectives. Some of these projects aim to facilitate the integration of renewable energy sources, while others seek to improve the interconnection and efficiency of existing power systems. The session will feature technical presentations from industry experts, utility professionals, and academia, providing an opportunity for professionals and stakeholders in the power engineering community to discuss recent advancements in the development of the European power grid and share experiences and best practices.
Chemical enrichment mechanisms in Omega Centauri: clues from neutron-capture elements
Creators: name: D'Orazi, Valentina
name: Gratton, Raffaele
name: Pancino, Elena
name: Bragaglia, Angela
name: Carretta, Eugenio
name: Lucatello, Sara
name: Sneden, Chris
Publisher: name: arXiv
Year: 2011
Subjects: subject: Astrophysics of Galaxies (astro-ph.GA)
subject: FOS: Physical sciences

description: In the complex picture of multiple stellar populations in globular clusters (GCs), a special role is played by NGC 5139 Omega Centauri. At variance with the majority of GCs, Omega Cen exhibits significant star-to-star variations in metallicity and in relative neutron-capture element abundance ratios with respect to Fe, along with split evolutionary sequences as revealed from colour-magnitude diagrams. Combining information from photometry and spectroscopy, several studies suggested that an age spread of several Gyr has to be invoked to explain (at least partially) some of the observed features. However, a comprehensive understanding of the formation, evolution and chemical enrichment processes is still not at hand. Relatively metal-rich Omega cen stars display neutron-capture abundance distributions dominated by contributions from the s-process, but it is not clear what roles have been played by the so-called main and weak s-process components in generating these abundances. To gain better insight into this question we derived lead (Pb) abundances for several cluster members, because this element can only be produced by the main s-process. We analysed high-resolution UVES@VLT spectra of a sample of twelve red-giant branch stars, deriving abundances of Pb and also of Y, Zr, La, Ce, Eu, and the C+N+O sum. Spectral synthesis was applied to all features, taking into account isotopic shifts and/or hyperfine structure as needed. We measured for the first time the Pb content in Omega Cen, discovering a clear hint for a Pb production occurring at [Fe/H]>-1.7 dex. Our data suggest that the role of the weak component in the production of s-process elements is negligible. Moreover, evidence gathered from the abundances of other elements indicates that the main component occurring in this GC is peculiar and shifted towards higher mass polluters than the standard one.
description: A&A, in press
HVDC Grid Evolvement and Related Grid Transformation in Europe
Creators: Kai Strunz
Alexander Raab
Franz Linke
Hakan Ergun
Ervin Dr. Spahic
Mikael Dahlgren
Publisher: name: IEEE
Year: 2024

The panel session will primarily focus on the impact of the energy revolution in Europe on the transmission grid, with a particular emphasis on the need for HVDC technology. It will delve into the challenges and opportunities presented by the interconnection of large-scale wind power in the north and solar power production in the south. The session will also explore the possibility of implementing a new network layer known as the overlay grid, which would leverage HVDC technology. Moreover, the panelists will provide an overview of ongoing and recently completed projects in this field, shedding light on their successes and lessons learned.
The panel session will primarily focus on the impact of the energy revolution in Europe on the transmission grid, with a particular emphasis on the need for HVDC technology. It will delve into the challenges and opportunities presented by the interconnection of large-scale wind power in the north and solar power production in the south. The session will also explore the possibility of implementing a new network layer known as the overlay grid, which would leverage HVDC technology. Moreover, the panelists will provide an overview of ongoing and recently completed projects in this field, shedding light on their successes and lessons learned.
Early-Life Inflammation Affects Amygdala Function and Associated Behaviours in Adolescence and Adulthood
Creators: name: Doenni, Vienna Maria
Publisher: name: Cumming School of Medicine
Year: 2018
Subjects: subject: Inflammation
subject: Development
subject: Brain
subject: Mental Health
subject: Education--Health
subject: Neuroscience

description: Inflammation is one of the most common results of viral and bacterial infections. While inflammation is a normal mechanism to clear pathogens, there is now emerging evidence that it can have profound effects on brain and behaviour. We discovered a susceptible window around postnatal day (P) 14, when a single exposure to an immune challenge with lipopolysaccharide (LPS - a bacterial, inflammatory compound) can cause changes in physiological and behavioural processes that persist into adulthood. In this research, I addressed the hypothesis that a single postnatal immune challenge on P14 causes long lasting alterations in amygdala function and associated behaviours. I investigated reciprocal social behaviour, anxiety, startle and fear behaviour in both male and female rats, and found that an immune challenge on P14 decreased sociability and delayed the extinction of a fearful memory of a cue but not context. The effects of P14 LPS were present in both males and females. Acutely at P14, LPS activated cells in the amygdala and decreased concentrations of the endocannabinoid anandamide. In adolescence endocannabinoid concentration, receptor binding and degradative enzyme activity were altered in males and females. When the activity of the anandamide degrading enzyme FAAH was normalized by an inhibitor (oral or intra amygdala), before a social encounter, behavioural changes caused by P14 LPS were normalized to control levels. This lead us to believe that the amygdaloid cannabinoid system is a substantial contributor to changes seen in response to early-life inflammation. Early-life inflammation may substantially shape adolescent social and fear behaviour and contribute to related disorders. I further investigated amygdala-mediated schizophrenia-like behaviours and found that –unlike maternal immune activation- sensorimotor gating and reactions to stressors are unaffected by postnatal inflammation on P14. Lastly, I investigated alcohol drinking as another amygdala related behaviour and found that P14 LPS leads to increased alcohol drinking in the adult, when pre-exposed to alcohol during adolescence. Taken together, my work strongly suggests that inflammation on P14 alters amygdala signalling and behaviour, and could help us understand differences in susceptibility for fear and anxiety disorders, schizophrenia and alcohol disorders.