cometadata/datacite-rtg-text-other-reclassification-records huggingface dataset:
GM 22 Tutorial: PV Hosting Capacity of Distribution Systems: From Accommodation to Integration using Customer and Grid-side Solutions (slides)
Creators: Luis (Nando) Ochoa
Matthew Rylander
Publisher: name: IEEE
Year: 2022

Distribution companies in many countries are finding it challenging to allow residential and commercial customers to continue to install photovoltaic (PV) systems due to the potential technical impacts resulting from high penetrations. To remove these barriers, speed up connection times, and reduce costs, distribution companies are being asked by regulators to increase the PV hosting capacity of their low and medium-voltage feeders. Adequately exploiting the capabilities of the customer and grid-side solutions will be key.  This half-day tutorial will present and discuss different aspects required to assess the PV hosting capacity of distribution feeders. Furthermore, it will explain and demonstrate the benefits but also the potential challenges from exploiting the capabilities of the customer and grid-side solutions to move from an analysis that determines what can be accommodated by the grid to what can be integrated into the grid. Customer-side solutions include smart inverters (Volt-Watt, Volt-var, export limits) and storage systems. Real case studies from Australia, France, and the USA will be used to demonstrate the quantification of hosting capacity considering potential strategies to make the most of customer and grid-side solutions.
Distribution companies in many countries are finding it challenging to allow residential and commercial customers to continue to install photovoltaic (PV) systems due to the potential technical impacts resulting from high penetrations. To remove these barriers, speed up connection times, and reduce costs, distribution companies are being asked by regulators to increase the PV hosting capacity of their low and medium-voltage feeders. Adequately exploiting the capabilities of the customer and grid-side solutions will be key.  This half-day tutorial will present and discuss different aspects required to assess the PV hosting capacity of distribution feeders. Furthermore, it will explain and demonstrate the benefits but also the potential challenges from exploiting the capabilities of the customer and grid-side solutions to move from an analysis that determines what can be accommodated by the grid to what can be integrated into the grid. Customer-side solutions include smart inverters (Volt-Watt, Volt-var, export limits) and storage systems. Real case studies from Australia, France, and the USA will be used to demonstrate the quantification of hosting capacity considering potential strategies to make the most of customer and grid-side solutions.
The balance between diffusion and absorption in semilinear parabolic equations
Creators: name: Shishkov, Andrey
name: Veron, Laurent
Publisher: name: arXiv
Year: 2008
Subjects: subject: Analysis of PDEs (math.AP)
subject: FOS: Mathematics
subject: 35K60

description: Let $h:[0,\infty)\mapsto [0,\infty)$ be continuous and nondecreasing, $h(t)>0$ if $t>0$, and $m,q$ be positive real numbers. We investigate the behavior when $k\to\infty$ of the fundamental solutions $u=u_{k}$ of $\prt_{t} u-Δu^m+h(t)u^q=0$ in $Ω\ti (0,T)$ satisfying $u_{k}(x,0)=kδ_0$. The main question is wether the limit is still a solution of the above equation with an isolated singularity at $(0,0)$, or a solution of the associated ordinary differential equation $ u'+h(t)u^q=0$ which blows-up at $t=0$.
GM 22 Tutorial: GridPACK - Framework and library for accelerating HPC in grid applications (Slides)
Creators: Yousu Chen
Zhenyu (Henry) Huang
Bruce Palmer
Renke Huang
Shriang Abhyankar
Shuangshuang Jin
Publisher: name: IEEE
Year: 2022

This tutorial will introduce GridPACK (Parallel Advanced Computing Kernels for Power Grid), an open-source platform for developing power grid applications designed to run on high-performance computing (HPC) architectures, ranging from a few cores to many cores and medium- and large-scale clusters. The objective of GridPACK is to lower the threshold of parallel programming to allow power grid application developers to focus on algorithms, instead of parallel computing, to address the emerging challenges of renewables, decarbonization, and extreme weather by significantly increasing the computational speed of grid simulations.

The GridPACK framework provides strong support for a wide variety of parallel solvers and parallels linear algebra that can be tailored for different simulation problems, with a low threshold for HPC implementation. The framework can be used to develop new power grid applications with prebuilt modules. Multiple case studies will be discussed to show that GridPACK can significantly increase computational speed for applications such as transient analysis, contingency analysis, and dynamic security assessment, using both task-level parallelism and multi-level parallelism via the task manager framework. Improved computational performance can enable larger and more comprehensive calculations to improve grid reliability, efficiency, and resilience.
This tutorial will introduce GridPACK (Parallel Advanced Computing Kernels for Power Grid), an open-source platform for developing power grid applications designed to run on high-performance computing (HPC) architectures, ranging from a few cores to many cores and medium- and large-scale clusters. The objective of GridPACK is to lower the threshold of parallel programming to allow power grid application developers to focus on algorithms, instead of parallel computing, to address the emerging challenges of renewables, decarbonization, and extreme weather by significantly increasing the computational speed of grid simulations.

The GridPACK framework provides strong support for a wide variety of parallel solvers and parallels linear algebra that can be tailored for different simulation problems, with a low threshold for HPC implementation. The framework can be used to develop new power grid applications with prebuilt modules. Multiple case studies will be discussed to show that GridPACK can significantly increase computational speed for applications such as transient analysis, contingency analysis, and dynamic security assessment, using both task-level parallelism and multi-level parallelism via the task manager framework. Improved computational performance can enable larger and more comprehensive calculations to improve grid reliability, efficiency, and resilience.
[Halle (Saale), Universitäts- und Landesbibliothek Sachsen-Anhalt, Morbio 2 (194 d)]
Creators: name: , Johannes
Publisher: name: Universitäts- und Landesbibliothek Sachsen-Anhalt
Year: 1246
Subjects: subject: Sonstige geistliche Aussteller
subject: Notarsurkunde
subject: Urkunde
subject: 090

description: Johannes, praepositus der Kirche St. Cataldi [in Cremona], belehnt Person[en] mit einem Stück Land, gelegen in Bragida Lunga an einem Ort, genannt Brugnetum.
[Halle (Saale), Universitäts- und Landesbibliothek Sachsen-Anhalt, Morbio 2 (199)]
Creators: name: Dogninus De Polesino
Publisher: name: Universitäts- und Landesbibliothek Sachsen-Anhalt
Year: 1246
Subjects: subject: Sonstige weltliche Aussteller
subject: Notarsurkunde
subject: Urkunde
subject: 090

description: Dogninus de Polesino aus der Nachbarschaft von St. Lucae versichert dem Jacinus de Libra und weiteren genannten Personen, einen Gelbetrag zurückzuzahlen.
Skinner-Rusk formalism for k-contact systems
Creators: name: Gràcia, Xavier
name: Rivas, Xavier
name: Román-Roy, Narciso
Publisher: name: arXiv
Year: 2021
Subjects: subject: Mathematical Physics (math-ph)
subject: High Energy Physics - Theory (hep-th)
subject: FOS: Physical sciences
subject: 70S05, 35Q61, 35R01, 53C15, 53D10, 53Z05, 58A10, 70G45, 70H45

description: In previous papers, a geometric framework has been developed to describe non-conservative field theories as a kind of modified Lagrangian and Hamiltonian field theories. This approach is that of $k$-contact Hamiltonian systems, which is based on the $k$-symplectic formulation of field theories as well as on contact geometry. In this work we present the Skinner--Rusk unified setting for these kinds of theories, which encompasses both the Lagrangian and Hamiltonian formalisms into a single picture. This unified framework is specially useful when dealing with singular systems, since: (i) it incorporates in a natural way the second-order condition for the solutions of field equations, (ii) it allows to implement the Lagrangian and Hamiltonian constraint algorithms in a unique simple way, and (iii) it gives the Legendre transformation, so that the Lagrangian and the Hamiltonian formalisms are obtained straightforwardly. We apply this description to several interesting physical examples: the damped vibrating string, the telegrapher's equations, and Maxwell's equations with dissipation terms.
description: 31 pages. Minor corrections. The bibliography is updated
Theoretical study of ferroelectric potassium nitrate
Creators: name: Dieguez, Oswaldo
name: Vanderbilt, David
Publisher: name: arXiv
Year: 2007
Subjects: subject: Materials Science (cond-mat.mtrl-sci)
subject: FOS: Physical sciences

description: We present a detailed study of the structural behavior and polarization reversal mechanism in phase III of KNO$_3$, an unusual ferroelectric material in which the nitrate groups rotate during polarization reversal. This material was one of several studied in a previous work [O. Diéguez and D. Vanderbilt, Phys. Rev. Lett. {\bf 96}, 056401 (2006)] where methods were described for computing curves of energy versus electric polarization. In the present work we extend and systematize the previous first-principles calculations on KNO$_3$, and analyze in detail a two-parameter model in which the energy of the system is written as a low-order expansion in the polarization and the nitrate group orientation. We confirm that this model reproduces the first-principles results for KNO$_3$ very well and construct its parameter-space phase diagram, describing regions where unusual triple-well potentials appear. We also present first-principles calculations of KNO$_3$ under pressure, finding that its energy-versus-polarization curves change character by developing a first-derivative discontinuity at zero polarization.
description: Replaced with extended version
GM 22 Tutorial: Probabilistic Energy Forecasting: Methodologies, Implementations, and Applications (slides)
Creators: Dr. Jethro Browell
Dr. Yi Wang
Dr. Tao Hong
Dr. Bri-Mathias Hodge
Publisher: name: IEEE
Year: 2022

The increasing integration of weather-dependent renewable energy and flexible loads introduces great complexity and uncertainty to power systems. Modern power systems rely on forecasts of many variables from minutes to weeks ahead to maintain reliable and economic operation. Probabilistic forecasts empower decision-makers with information about forecast uncertainty and play an important role in a growing number of power systems around the world. This tutorial introduces probabilistic forecasting, describes leading methods for load, price, wind, and solar forecasting, and explains how these forecasts are used in power systems. It is delivered by leading researchers who have developed these methods and supported their adoption energy industry in the US, Europe, and beyond.
The increasing integration of weather-dependent renewable energy and flexible loads introduces great complexity and uncertainty to power systems. Modern power systems rely on forecasts of many variables from minutes to weeks ahead to maintain reliable and economic operation. Probabilistic forecasts empower decision-makers with information about forecast uncertainty and play an important role in a growing number of power systems around the world. This tutorial introduces probabilistic forecasting, describes leading methods for load, price, wind, and solar forecasting, and explains how these forecasts are used in power systems. It is delivered by leading researchers who have developed these methods and supported their adoption energy industry in the US, Europe, and beyond.
Ecological assessment of recreation impacts in the Stein watershed : a baseline study
Creators: name: Sharpe, Ian
Publisher: name: University of British Columbia
Year: 2010

description: This study was designed as the baseline data collection phase of much longer term recreation impact assessment study in the Stein River Basin, British Columbia. Site, soil and vegetation data were gathered at 15 informal campsites situated throughout the 1000 km² watershed using standard British Columbia Forest Service ecological inventory methods. 'Experimental' (campsite) and 'control' plot inventories provided the basis for vegetation species composition and abundance (percent cover and stems per hectare) comparisons to determine present impacts. Recommendations for future recreational development in the valley were made on site-by-site and ecological subzone bases derived from impact assessment findings. Future replications of ecological inventories of the 15 campsites will enhance planning capabilities by allowing further identification of impact prone and resistant areas.
[Halle (Saale), Universitäts- und Landesbibliothek Sachsen-Anhalt, Morbio 2 (202)]
Creators: name: Barozolus De Burgo
Publisher: name: Universitäts- und Landesbibliothek Sachsen-Anhalt
Year: 1242
Subjects: subject: Sonstige weltliche Aussteller
subject: Notarsurkunde
subject: Urkunde
subject: 090

description: Barozolus de Burgo aus der Nachbarschaft von St. Salvatoris in Cremona verkauft Nicolaus stellvertretender Empfänger für Albertinus, Sohn des verstorbenen Petrus Sertor, einst wohnhaft in Gonzaga, ein Stück Land in Polesine Parmense.
Constrained Lagrangian dissipative contact dynamics
Creators: name: de León, Manuel
name: Laínz, Manuel
name: Muñoz-Lecanda, Miguel C.
name: Román-Roy, Narciso
Publisher: name: arXiv
Year: 2021
Subjects: subject: Mathematical Physics (math-ph)
subject: High Energy Physics - Theory (hep-th)
subject: FOS: Physical sciences
subject: Primary: 37J55, 53D10, 70G75. Secondary: 37J06, 70G45, 70H03

description: We show that the contact dynamics obtained from the Herglotz variational principle can be described as a constrained nonholonomic or vakonomic ordinary Lagrangian system depending on a dissipative variable with an adequate choice of one constraint. As a consequence we obtain the dynamics of contact nonholonomic and vakonomic systems as ordinary variational calculus with constraints on a Lagrangian with a dissipative variable. The variation of the energy and the other dissipative quantities are also obtained giving the usual results.
description: 32 pp. New sections are added (3.4, 4.3, 5.5). Other minor changes. The bibliography is updated
Energy Storage is Indispensable for Future Power Grid-Slides
Creators: Vivek Agarwal
Publisher: name: IEEE
Year: 2022

PELS Webinar Slides
Abstract: The concerns related to greenhouse gas emissions and energy pricing have led to a huge focus on green energy integration with the power grid. As a result, the nature and structure of the power grid are changing fast with the incorporation of distributed generation and microgrids, which is posing many challenges. Consequently, there is an effort to incorporate smartness in the grid for better control of power to ensure high quality, availability, cost optimality and security. A major issue with green energy sources is that they are intermittent, which necessitates energy storage or some other support. Another issue is that the green energy interfaces do not exhibit characteristics like the synchronous generators do in a conventional grid. Thus, the green energy integration does not add any natural inertia in the system, which raises stability issues. As more and more green energy is integrated with the grid, these issues are bound to escalate. Energy storage can help resolve these issues. At the same time, research on microgrids has highlighted the importance of smaller power systems, having better controllability and flexibility to use locally available green sources. Clearly, the future power grid can be expected to be a cluster of several microgrids with de-centralized control. However, microgrids being much smaller systems, need strong energy buffers for their successful operation. This webinar will focus on some of these issues and highlight the indispensability of energy storage in dealing with certain aspects of the future power grid.
Facilitated movement of inertial Brownian motors driven by a load under an asymmetric potential
Creators: name: Ai, Bao-quan
name: Liu, Liang-gang
Publisher: name: arXiv
Year: 2007
Subjects: subject: Statistical Mechanics (cond-mat.stat-mech)
subject: Soft Condensed Matter (cond-mat.soft)
subject: FOS: Physical sciences

description: Based on recent work [L. Machura, M. Kostur, P. Talkner, J. Luczka, and P. Hanggi, Phys. Rev. Lett. 98, 040601 (2007)], we extend the study of inertial Brownian motors to the case of an asymmetric potential. It is found that some transport phenomena appear in the presence of an asymmetric potential. Within tailored parameter regimes, there exists two optimal values of the load at which the mean velocity takes its maximum, which means that a load can facilitate the transport in the two parameter regimes. In addition, the phenomenon of multiple current reversals can be observed when the load is increased.
description: 7 pages, 3 figures
GM 22 Tutorial: Distributed Optimization for Electric Power Systems: Needs, Algorithmic Developments, and Use Cases (Slides)
Creators: John McDonald
Rabab Haider
Anuradha Annaswamy
Xin Chen
Na (Lina) Li
Anurag Srivastava
Publisher: name: IEEE
Year: 2022

The rapid growth of distributed energy resources (e.g., solar PV, batteries, electric vehicle charging, etc.) motivates the transition from centralized to distributed computations to cooperatively control these devices such that network efficiency and reliability are maximized.  Distributed optimization algorithms provide a number of potential advantages over centralized computations, including scalability via parallel computations, robustness to failure of individual computing agents, and data privacy. Accordingly, both academics and industry are looking towards distributed optimization algorithms to complement existing centralized computations through various use cases, such as volt/var control, solving optimal power flow, and managing retail electricity markets. To realize the potential advantages of distributed optimization, researchers have proposed various distributed optimization algorithms for these use cases, each with different advantages and disadvantages. This tutorial reviews various use cases for distributed optimization presents illustrative examples of several solution algorithms and discusses current limitations and future research needs
The rapid growth of distributed energy resources (e.g., solar PV, batteries, electric vehicle charging, etc.) motivates the transition from centralized to distributed computations to cooperatively control these devices such that network efficiency and reliability are maximized.  Distributed optimization algorithms provide a number of potential advantages over centralized computations, including scalability via parallel computations, robustness to failure of individual computing agents, and data privacy. Accordingly, both academics and industry are looking towards distributed optimization algorithms to complement existing centralized computations through various use cases, such as volt/var control, solving optimal power flow, and managing retail electricity markets. To realize the potential advantages of distributed optimization, researchers have proposed various distributed optimization algorithms for these use cases, each with different advantages and disadvantages. This tutorial reviews various use cases for distributed optimization presents illustrative examples of several solution algorithms and discusses current limitations and future research needs
Sorghastrum 1950-1983 MaxEnt Results
Creators: name: Frailey, Anna
Publisher: name: figshare
Year: 2021
Subjects: subject: Plant Biology
subject: FOS: Biological sciences
subject: Atmospheric Sciences
subject: FOS: Earth and related environmental sciences

description: Sorghastrum 1950-2016 MaxEnt Results
[Halle (Saale), Universitäts- und Landesbibliothek Sachsen-Anhalt, Morbio 2 (198)]
Creators: name: Guiscardus
Publisher: name: Universitäts- und Landesbibliothek Sachsen-Anhalt
Year: 1246
Subjects: subject: Sonstige weltliche Aussteller
subject: Notarsurkunde
subject: Urkunde
subject: 090

description: Guiscardus de Giroldis de vicinia maiori Cremone verpfändet als Bürge des Girardus de Giroldis dem Cerutus de Sancto Dognino seine Güter für ein Darlehen.
ВЛИЯНИЕ ЮРИДИЧЕСКОЙ ОТВЕТСТВЕННОСТИ В ФИНАНСОВО-ЭКОНОМИЧЕСКОЙ СФЕРЕ НА ЭКОНОМИЧЕСКУЮ БЕЗОПАСНОСТЬ ГОСУДАРСТВА В СОВРЕМЕННЫХ УСЛОВИЯХ
Creators: name: ИЛЬИН Александр Юрьевич
Publisher: name: Образование и право
Year: 2020
Subjects: финансы
налоги
финансовая деятельность
экономическая безопасность
пандемия
правонарушаемость
ответственность

description: В статье рассматривается влияние юридической ответственности в финансово-экономической сфере на состояние экономической безопасности, которая нацелена на защиту общественных отношений, создание благоприятных условий для осуществления финансовой деятельности государства, при которой, предельно увеличивается поступление доходов в бюджет, снижается возможность перенаправления финансовых потоков в незаконные сферы их использования; до минимума снижается возможность явного злоупотребления денежными средствами и уменьшается правонарушаемость в финансово-экономической сфере.
The Poissonian Origin of Power Laws in Solar Flare Waiting Time Distributions
Creators: name: Aschwanden, Markus J.
name: Johnson, Jay R.
name: Nurhan, Yosia I.
Publisher: name: arXiv
Year: 2021
Subjects: subject: Solar and Stellar Astrophysics (astro-ph.SR)
subject: FOS: Physical sciences

description: In this study we aim for a deeper understanding of the power law slope, $α$, of waiting time distributions. Statistically independent events with linear behavior can be characterized by binomial, Gaussian, exponential, or Poissonian size distribution functions. In contrast, physical processes with nonlinear behavior exhibit spatio-temporal coherence (or memory) and "fat tails" in their size distributions that fit power law-like functions, as a consequence of the time variability of the mean event rate, as demonstrated by means of Bayesian block decomposition in the work of Wheatland et al.~(1998). In this study we conduct numerical simulations of waiting time distributions $N(τ)$ in a large parameter space for various (polynomial, sinusoidal, Gaussian) event rate functions $λ(t)$, parameterized with an exponent $p$ that expresses the degree of the polynomial function $λ(t) \propto t^p$. We derive an analytical exact solution of the waiting time distribution function in terms of the incomplete gamma function, which is similar to a Pareto type-II function and has a power law slope of $α= 2 + 1/p$, in the asymptotic limit of large waiting times. Numerically simulated random distributions reproduce this theoretical prediction accurately. Numerical simulations in the nonlinear regime ($p \ge 2$) predict power law slopes in the range of $2.0 \le α\le 2.5$. The self-organized criticality model yields a prediction of $α=2$. Observations of solar flares and coronal mass ejections (over at least a half solar cycle) are found in the range of $α_{obs} \approx 2.1-2.4$. Deviations from strict power law functions are expected due to the variability of the flare event rate $λ(t)$, and deviations from theoretically predicted slope values $α$ occur due to the Poissonian weighting bias of power law fits.
description: 14 pages, 7 Figures
[Halle (Saale), Universitäts- und Landesbibliothek Sachsen-Anhalt, Morbio 2 (194 c)]
Creators: name: , Johannes
Publisher: name: Universitäts- und Landesbibliothek Sachsen-Anhalt
Year: 1246
Subjects: subject: Sonstige geistliche Aussteller
subject: Notarsurkunde
subject: Urkunde
subject: 090

description: [Johannes, praepositus der Kirche St. Cataldi in Cremona], belehnt [?] Person[en] [mit Land?], gelegen in Bragida Lunga an einem Ort, genannt Brugnetum.
FNDC-1-mediated mitophagy and ATFS-1 coordinate to protect against hypoxia-reoxygenation
Creators: name: Lim, Yunki
name: Berry, Brandon
name: Viteri, Stephanie
name: McCall, Matthew
name: Park, Eun Chan
name: Rongo, Christopher
name: Brookes, Paul S.
name: Nehrke, Keith
Publisher: name: Taylor & Francis
Year: 2021
Subjects: subject: Biophysics
subject: Biochemistry
subject: Cell Biology
subject: Genetics
subject: FOS: Biological sciences
subject: Molecular Biology
subject: Neuroscience
subject: Physiology
subject: Immunology
subject: FOS: Clinical medicine
subject: Inorganic Chemistry
subject: FOS: Chemical sciences
subject: 111714 Mental Health
subject: FOS: Health sciences
subject: 110309 Infectious Diseases
subject: Computational Biology

description: Mitochondrial quality control (MQC) balances organelle adaptation and elimination, and mechanistic crosstalk between the underlying molecular processes affects subsequent stress outcomes. FUNDC1 (FUN14 domain containing 1) is a mammalian mitophagy receptor that responds to hypoxia-reoxygenation (HR) stress. Here, we provide evidence that FNDC-1 is the C. elegans ortholog of FUNDC1, and that its loss protects against injury in a worm model of HR. This protection depends upon ATFS-1, a transcription factor that is central to the mitochondrial unfolded protein response (UPRmt). Global mRNA and metabolite profiling suggest that atfs-1-dependent stress responses and metabolic remodeling occur in response to the loss of fndc-1. These data support a role for FNDC-1 in non-hypoxic MQC, and further suggest that these changes are prophylactic in relation to subsequent HR. Our results highlight functional coordination between mitochondrial adaptation and elimination that organizes stress responses and metabolic rewiring to protect against HR injury. Abbreviations: AL: autolysosome; AP: autophagosome; FUNDC1: FUN14 domain containing 1; HR: hypoxia-reperfusion; IR: ischemia-reperfusion; lof: loss of function; MQC: mitochondrial quality control; PCA: principle component analysis; PPP: pentonse phosphate pathway; proK (proteinase K);UPRmt: mitochondrial unfolded protein response; RNAi: RNA interference.
Sorghastrum 1950-2016 MaxEnt Results
Creators: name: Frailey, Anna
Publisher: name: figshare
Year: 2021
Subjects: subject: Plant Biology
subject: FOS: Biological sciences
subject: Atmospheric Sciences
subject: FOS: Earth and related environmental sciences

description: Sorghastrum 1950-2016 MaxEnt Results
An investigation of ${\cal PT}$-symmetry breaking in tight-binding chains
Creators: name: Luck, Jean-Marc
Publisher: name: arXiv
Year: 2021
Subjects: subject: Mesoscale and Nanoscale Physics (cond-mat.mes-hall)
subject: Disordered Systems and Neural Networks (cond-mat.dis-nn)
subject: Statistical Mechanics (cond-mat.stat-mech)
subject: FOS: Physical sciences

description: We consider non-Hermitian ${\cal PT}$-symmetric tight-binding chains where gain/loss optical potentials of equal magnitudes $\pm{\rm i}γ$ are arbitrarily distributed over all sites. The main focus is on the threshold $γ_c$ beyond which ${\cal PT}$-symmetry is broken. This threshold generically falls off as a power of the chain length, whose exponent depends on the configuration of optical potentials, ranging between 1 (for balanced periodic chains) and 2 (for unbalanced periodic chains, where each half of the chain experiences a non-zero mean potential). For random sequences of optical potentials with zero average and finite variance, the threshold is itself a random variable, whose mean value decays with exponent 3/2 and whose fluctuations have a universal distribution. The chains yielding the most robust ${\cal PT}$-symmetric phase, i.e., the highest threshold at fixed chain length, are obtained by exact enumeration up to 48 sites. This optimal threshold exhibits an irregular dependence on the chain length, presumably decaying asymptotically with exponent 1, up to logarithmic corrections.
description: 30 pages, 12 figures, 1 table
Wideband Near-field Extension for the 3GPP Geometry Based Stochastic Channel Model
Creators: name: Das, Shrayan
name: Zhang, Peize
name: Kyösti, Pekka
Publisher: name: Zenodo
Year: 2025
Subjects: 3GPP
HEXA-X-II
nearfield
reflection
scattering
image theory
channel model

description: This technical report presents a preliminary investigation into near-field propagation effects in wireless communication channels, extending the conventional 3GPP geometry-based stochastic channel model to account for spherical wavefront characteristics. Traditional radio channel models primarily assume far-field conditions, where the plane wave approximation is valid. However, as antenna arrays grow in electrical size, communication distances shorten, and higher frequency bands with wider bandwidths are deployed, near-field modeling becomes increasingly critical. This report introduces modifications to the existing 3GPP framework, incorporating near-field effects in both line-of-sight (LoS) and non-line-of-sight (NLoS) paths. A novel virtual image theory is proposed to determine specular reflection distances, while stochastic modeling techniques are applied to characterize scattered multipaths. The framework ensures consistency with existing channel models while improving accuracy in the Fresnel region. As this is an ongoing study, this document serves as an initial version and will be continuously updated with new findings, refinements, theoretical, and experimental validations.

Acknowledgement: This work is funded by the Hexa-X-II project, receiving funding from the Smart Networks and Services Joint Undertaking (SNS JU) under the European Union’s Horizon Europe research and innovation programme under Grant Agreement No. 101095759.
Scalar Dark Matter Production through the Bubble Expansion Mechanism:The Role of the Lorentz factor and Non-Renormalizable Interactions
Creators: name: Cembranos, Jose A. R.
name: Luque, Jesús
name: Rubio, Javier
Publisher: name: arXiv
Year: 2024
Subjects: subject: High Energy Physics - Phenomenology (hep-ph)
subject: Cosmology and Nongalactic Astrophysics (astro-ph.CO)
subject: High Energy Physics - Theory (hep-th)
subject: FOS: Physical sciences

description: We consider a Bubble Expansion mechanism for the production of scalar dark matter during a first-order phase transition in the very early Universe. Seeking for a dark matter energy density in agreement with observations, we study different renormalizable and non-renormalizable interactions between the dark matter species and the field undergoing the transition, considering all possible regimes for the Lorentz boost factor associated with the motion of the bubble wall. By employing a combination of analytical and numerical techniques, we demonstrate that sufficient dark matter production is achievable even in the previously unexplored low-velocity bubble expansion regime, enlarging the parameter space and possibilities of the scenario. Notably, for the non-renormalizable interactions it is found that the produced dark matter abundances exhibit a similar qualitative behavior to the renormalizable case, even for low Lorentz boost factors. Furthermore, for a transition around the electroweak scale, the associated gravitational wave spectrum is within the reach of future detectors.
description: 16 pages, 6 figures. Matches published version in EPJC
[Halle (Saale), Universitäts- und Landesbibliothek Sachsen-Anhalt, Morbio 2 (200)]
Creators: name: De Flora, Johannes
Publisher: name: Universitäts- und Landesbibliothek Sachsen-Anhalt
Year: 1246
Subjects: subject: Sonstige weltliche Aussteller
subject: Notarsurkunde
subject: Urkunde
subject: 090

description: Johannes de Flora aus der Nachbarschaft von St. Pauli in Cremona verkauft mit dem Einverständnis des archipresbyters Nicolaus den Brüdern Egidius und Johannes de Bochettis, ebenfalls aus der Nachbarschaft von St. Pauli, ein Stück Land in Braida Longa nahe der Mühle, genannt Caue.
Dynamical mass of a star cluster in M83: a test of fibre-fed multi-object spectroscopy
Creators: name: Moll, SL
name: de Grijs, R
name: Anders, P
name: Crowther, PA
name: Larsen, SS
name: Smith, LJ
name: Zwart, SF Portegies
Publisher: name: arXiv
Year: 2008
Subjects: subject: Astrophysics (astro-ph)
subject: FOS: Physical sciences

description: (Abridged) Aims: We obtained VLT/FLAMES+UVES high-resolution, fibre-fed spectroscopy (FFS) of five young massive clusters in M83 (NGC 5236). This forms the basis of a pilot study testing the feasibility of using FFS to measure the velocity dispersions of several clusters simultaneously, in order to determine their dynamical masses; Methods: We adopted two methods for determining the velocity dispersion of the star clusters: cross-correlating the cluster spectrum with the template spectra and minimising a chi^2 value between the cluster spectrum and the broadened template spectra. Cluster 805 in M83 was chosen as a control to test the reliability of the method, through a comparison with the results obtained from a standard echelle VLT/UVES spectrum obtained by Larsen & Richtler; Results: We find no dependence of the velocity dispersions measured for a cluster on the choice of red giant versus red supergiant templates, nor on the method adopted. We measure a velocity dispersion of sigma_los = 10.2+/-1.1 km/s for cluster 805 from our FFS. Our FLAMES+UVES velocity dispersion measurement gives M_vir = (6.6+/-1.7)e5 M_sun, consistent with previous results. This is a factor of ~3 greater than the cluster's photometric mass, indicating a lack of virial equilibrium. However, based on its effective star formation efficiency, the cluster is likely to virialise, and may survive for a Hubble time, in the absence of external disruptive forces; Conclusions: We find that reliable velocity dispersions can be determined from FFS. The advantages of observing several clusters simultaneously outweighs the difficulty of accurate galaxy background subtraction, providing that the targets are chosen to provide sufficient S/N ratios, and are much brighter than the galaxy background.
description: 10 pages, 4 figures, accepted by A&A
Transport-enabled entangling gate for trapped ions
Creators: name: Tinkey, Holly N.
name: Clark, Craig R.
name: Sawyer, Brian C.
name: Brown, Kenton R.
Publisher: name: arXiv
Year: 2021
Subjects: subject: Quantum Physics (quant-ph)
subject: Atomic Physics (physics.atom-ph)
subject: FOS: Physical sciences

description: We implement a two-qubit entangling Mølmer-Sørensen interaction by transporting two co-trapped $^{40}\mathrm{Ca}^{+}$ ions through a stationary, bichromatic optical beam within a surface-electrode Paul trap. We describe a procedure for achieving a constant Doppler shift during the transport which uses fine temporal adjustment of the moving confinement potential. The fixed interaction duration of the ions transported through the laser beam as well as the dynamically changing ac Stark shift require alterations to the calibration procedures used for a stationary gate. We use the interaction to produce Bell states with fidelities commensurate to those of stationary gates performed in the same system. This result establishes the feasibility of actively incorporating ion transport into quantum information entangling operations.
description: 5 pages, 3 figures
Low-energy interband Kondo bound states in orbital-selective Mott phases
Creators: name: Wang, Jia-Ming
name: Chen, Yin
name: Tian, Yi-Heng
name: He, Rong-Qiang
name: Lu, Zhong-Yi
Publisher: name: arXiv
Year: 2024
Subjects: subject: Strongly Correlated Electrons (cond-mat.str-el)
subject: Computational Physics (physics.comp-ph)
subject: FOS: Physical sciences

description: Low-energy excitations in correlated electron systems may show intricate behaviors and provide essential insights into the dynamics of quantum states and phase transitions. Here, we study a typical half-filled two-orbital Hubbard model featuring the so-called holon-doublon (HD) low-energy excitations in the orbital-selective Mott phase (OSMP), where the principal form of the low-energy excitations has been considered to be a HD bound state. We employ standard single-site dynamical mean-field theory (DMFT), using NORG as an improved impurity solver to calculate the spectral functions at zero temperature. We show that the HD bound state gives an incomplete or even wrong picture for the low-energy excitations. Instead, the excitations are composed of a Kondo-like state in the wide band and a doublon in the narrow band, termed as inter-band Kondo-like (IBK) bound states. Remarkably, we find that, as the bandwidths of the two bands approach each other, anomalous IBK bound-state excitations appear in the metallic {\em wide} band. Our study provides a new picture for the low-energy excitations in the OSMP.
description: 8 pages, 7 figures
A method for drag reduction on bluff bodies
Creators: name: Lesage, François
Publisher: name: University of British Columbia
Year: 2010

description: This thesis presents an experimental investigation on the drag of typical two-dimensional bluff bodies with a small circular cylinder (here called a "rod") placed upstream on the stagnation line. In most cases, the interaction was beneficial and the drag of the overall system was reduced. Fluctuating side force due to vortex shedding from the main body was also investigated for various rod positions and diameters. Two typical bluff bodies were investigated: a circular cylinder and a flat plate. The front rod diameter (d) varied from 0.17D to 0.5D where D is the frontal width of the main circular cylinder or flat plate. Reynolds numbers defined using dimension D were in the range of 1x10⁴ to 7x10⁴, and the longitudinal spacing L from the rod centre to the main body was 0.4 < L/D < 7.0. For both the flat plate and the circular cylinder, the measured overall drag coefficient at various L/D showed a discontinuous "jump" at some critical spacing. This change corresponds to the elimination of the usual single stagnation point on the bluff body centre line and the appearance of two stagnation points symmetrically placed, close to the lateral edges of the body. For the flat plate, the optimum configuration was found to be d/D = 0.33 at a spacing L/D of 1.81, and the overall drag reduction (based on the drag of the plate alone) was 36%. The drag reduction was due to a change in front pressure only, the base pressure remaining essentially constant and independent of L/D. No Reynolds number dependence was found, as expected. For the circular cylinder, the best overall drag reduction was found to be 58% for the configuration d/D = 0.33 and L/D = 1.73. Part of the drag reduction on the cylinder was due to the rod wake being turbulent which made the flow over the main cylinder critical, with a lower value of base pressure coefficient. The second effect was a sudden change in the front pressure distribution similar to that observed on the flat plate. Unlike the flat plate, however, the flow over the circular cylinder was sensitive to Reynolds number, with decreasing CD for increasing Re. The fluctuating side force (CI') on the cylinder due to vortex shedding was also investigated. The variation of CI' with spacing followed different trends depending on the rod size and Reynolds number but CI' never increased significantly with the use of the front rod and was reduced in most cases. The rod d/D = 0.17 seemed to be more suitable for minimum fluctuating side force. The position for Cl' minimum was found to depend upon the particular configuration.
[Halle (Saale), Universitäts- und Landesbibliothek Sachsen-Anhalt, Morbio 2 (194 a)]
Creators: name: , Johannes
Publisher: name: Universitäts- und Landesbibliothek Sachsen-Anhalt
Year: 1245
Subjects: subject: Sonstige geistliche Aussteller
subject: Notarsurkunde
subject: Urkunde
subject: 090

description: Johannes, praepositus der Kirche St. Cataldi [in Cremona], belehnt Nigrus de Homdeis mit einem Stück Land, gelegen in Bragida Lunga an einem Ort, genannt Brugnetum.
The precise boundary trace of solutions of a class of supercritical nonlinear equations
Creators: name: Marcus, Moshe
name: Veron, Laurent
Publisher: name: arXiv
Year: 2008
Subjects: subject: Analysis of PDEs (math.AP)
subject: FOS: Mathematics
subject: 35J60

description: We construct and study the properties of the precise boundary trace of positive solutions of $-Δu+u^q=0$ in a smooth bounded domain of $\mathbb R^N$, in the supercritical case $q\geq q_c=(N+1)/(N-1)$
FNDC-1-Mediated Mitophagy and ATFS-1 Coordinate to Protect Against Hypoxia-Reoxygenation
Creators: name: Lim, Yunki
name: Berry, Brandon
name: Viteri, Stephanie
name: McCall, Matthew
name: Park, Eun Chan
name: Rongo, Christopher
name: Brookes, Paul S.
name: Nehrke, Keith
Publisher: name: Taylor & Francis
Year: 2021
Subjects: subject: Biophysics
subject: Biochemistry
subject: Cell Biology
subject: Genetics
subject: FOS: Biological sciences
subject: Molecular Biology
subject: Neuroscience
subject: Physiology
subject: Immunology
subject: FOS: Clinical medicine
subject: Inorganic Chemistry
subject: FOS: Chemical sciences
subject: 111714 Mental Health
subject: FOS: Health sciences
subject: Computational Biology

description: Mitochondrial quality control (MQC) balances organelle adaptation and elimination, and mechanistic crosstalk between the underlying molecular processes affects subsequent stress outcomes. FUNDC1 (FUN14 domain containing 1) is a mammalian mitophagy receptor that responds to hypoxia-reoxygenation (HR) stress. Here, we provide evidence that FNDC-1 is the C. elegans ortholog of FUNDC1, and that its loss protects against injury in a worm model of HR. This protection depends upon ATFS-1, a transcription factor that is central to the mitochondrial unfolded protein response (UPRmt). Global mRNA and metabolite profiling suggest that atfs-1-dependent stress responses and metabolic remodeling occur in response to the loss of fndc-1. These data support a role for FNDC-1 in non-hypoxic MQC, and further suggest that these changes are prophylactic in relation to subsequent HR. Our results highlight functional coordination between mitochondrial adaptation and elimination that organizes stress responses and metabolic rewiring to protect against HR injury.
Shear-Driven Flow in an Elliptical Enclosure Generated by an Inner Rotating Circular Cylinder
Creators: name: Unnikrishnan, Akash
name: Shahane, Shantanu
name: Narayan, Vinod
name: Vanka, Surya Pratap
Publisher: name: arXiv
Year: 2021
Subjects: subject: Fluid Dynamics (physics.flu-dyn)
subject: Numerical Analysis (math.NA)
subject: FOS: Physical sciences
subject: FOS: Mathematics

description: Shear-driven flow between a rotating cylinder and a stationary elliptical enclosure is studied in this paper. Two-dimensional time-dependent Navier Stokes equations are solved using a meshless method where interpolations are done with Polyharmonic Spline Radial Basis Functions. The fluid flow is analyzed for various aspect ratios of the ellipse and eccentric placements of the inner cylinder. Contour plots of vorticity with streamlines, plots of non-dimensional torque, and the angle of eye of the primary vortex are presented in the paper for Reynolds numbers between 200 and 2000. Formation of Moffatt like vortices in the wide-gap region of the model is observed and some benchmark data are provided for various cases that are simulated.
Andropogon 1984-2016 MaxEnt Results
Creators: name: Frailey, Anna
Publisher: name: figshare
Year: 2021
Subjects: subject: Plant Biology
subject: FOS: Biological sciences
subject: Atmospheric Sciences
subject: FOS: Earth and related environmental sciences

description: Andropogon 1984-2016 MaxEnt Results
NLZ NLT MORPHINE HH_Supplementary File_R2
Creators: name: Getsy, Paulina
Publisher: name: figshare
Year: 2025
Subjects: classificationCode: 319999
subject: Other biological sciences not elsewhere classified

description: Supplementary File for manuscript titled "Reversal of morphine-induced respiratory depression with the m1-opioid receptor antagonist naloxonazine engenders excitation and instability of breathing"
ATG7 is dispensable for LC3–PE conjugation in thioglycolate-elicited mouse peritoneal macrophages
Creators: name: Vujić, Nemanja
name: Bradić, Ivan
name: Goeritzer, Madeleine
name: Kuentzel, Katharina B.
name: Rainer, Silvia
name: Kratky, Dagmar
name: Radović, Branislav
Publisher: name: Taylor & Francis
Year: 2021
Subjects: subject: Biochemistry
subject: Medicine
subject: Cell Biology
subject: Genetics
subject: FOS: Biological sciences
subject: Physiology
subject: Pharmacology
subject: 59999 Environmental Sciences not elsewhere classified
subject: FOS: Earth and related environmental sciences
subject: Immunology
subject: FOS: Clinical medicine
subject: Marine Biology
subject: Hematology

description: Thioglycolate-elicited macrophages exhibit abundant conjugation of LC3 with PE (LC3-II). Among other autophagy-related (ATG) proteins, it is proposed that, like in yeast, both ATG5 and ATG7 are essential for LC3 conjugation. Using atg5-deficient (−/-) and atg7−/-macrophages, we provide evidence that loss of ATG5 but not of ATG7 resulted in LC3-II depletion. Accumulation of LC3-II in elicited atg7−/- macrophages in response to bafilomycin A1 validated these data. Furthermore, complete loss of ATG3 in atg7−/- macrophages demonstrated that ATG7 and ATG3 are dispensable for LC3–PE conjugation. In contrast to thioglycolate-elicited macrophages, naïve peritoneal and bone marrow-derived atg7−/- macrophages exhibited no LC3-II, even under inflammatory stimuli in vitro. Hence, the macrophage metabolic status dictates the level of LC3–PE conjugation with a supportive but nonessential role of ATG7, disclosing the eukaryotic exception from the LC3 lipidation model based on yeast data. Abbreviations: ATG: autophagy-related; BM: bone marrow; MAP1LC3/LC3: microtubule-associated protein 1 light chain 3; PE: phosphatidylethanolamine.
Loss of New Ideas: Potentially Long-lasting Effects of the Pandemic on Scientists
Creators: name: Gao, Jian
name: Yin, Yian
name: Myers, Kyle R.
name: Lakhani, Karim R.
name: Wang, Dashun
Publisher: name: arXiv
Year: 2021
Subjects: subject: Digital Libraries (cs.DL)
subject: Physics and Society (physics.soc-ph)
subject: FOS: Computer and information sciences
subject: FOS: Physical sciences

description: Extensive research has documented the immediate impacts of the COVID-19 pandemic on scientists, yet it remains unclear if and how such impacts have shifted over time. Here we compare results from two surveys of principal investigators, conducted between April 2020 and January 2021, along with analyses of large-scale publication data. We find that there has been a clear sign of recovery in some regards, as scientists' time spent on their work has almost returned to pre-pandemic levels. However, the latest data also reveals a new dimension in which the pandemic is affecting the scientific workforce: the rate of initiating new research projects. Except for the small fraction of scientists who directly engaged in COVID-related research, most scientists started significantly fewer new research projects in 2020. This decline is most pronounced amongst the same demographic groups of scientists who reported the largest initial disruptions: female scientists and those with young children. Yet in sharp contrast to the earlier phase of the pandemic, when there were large disparities across scientific fields, this loss of new projects appears remarkably homogeneous across fields. Analyses of large-scale publication data reveal a global decline in the rate of new collaborations, especially in non-COVID-related preprints, which is consistent with the reported decline in new projects. Overall, these findings highlight that, while the end of the pandemic may appear in sight in some countries, its large and unequal impact on the scientific workforce may be enduring, which may have broad implications for inequality and the long-term vitality of science.
description: 14 pages, 2 figures, with supplementary information