Miracle-dz/UniFAR-FTUs huggingface dataset:
A holistic functional analysis of a flexibility aggregator in a dynamic market environment

Advances in the implementation of smart grid technologies opened the path towards aggregation of granular distributed energy resources (DER). The aggregated resources can deliver significant flexibility and are expected to have a significant role in the energy market of the near future. The aggregated flexibility from low voltage end-user assets can be optimized towards responding to explicit signals of ancillary services procurement from the balancing responsible party; or it can respond to pricing signals from day-ahead or intra-day market. A first step is to outline the aggregator role and its inputs and outputs enabling market integration with other participants, as well as contractual implementation. Ensuring proper interactions and defining responsibilities is conducive to the formation of an environment where the aggregator operates in a significant capacity. This work aims to provide a functional analysis of an aggregator entity - mainly, how DER assets, capable of delivering flexibility are aggregated, grouped and optimized to provide reliable demand response services, while also dynamically adapting to constraints set by owners of individual DER flexibility assets. The paper delivers an analysis of aggregator interaction with other stakeholders. This work facilitates integration of the aggregator in all aspects of the functioning energy grid, from the technical to the market layer, identifying opportunities and barriers along the way.
Computational Hyperspectral Imaging with Diffractive Optics and Deep Residual Network

Hyperspectral imaging critically serves for various fields such as remote sensing, biomedical and agriculture. Its potential can be exploited to a greater extent when combined with deep learning methods, which improve the reconstructed hyperspectral image quality and reduce the processing time. In this paper, we propose a novel snapshot hyperspectral imaging system using optimized diffractive optical element and color filter along with the residual dense network. We evaluate our method through simulations considering the effects of each optical element and noise. Simulation results demonstrate high-quality hyperspectral image reconstruction capabilities through the proposed computational hyperspectral camera.
INITIAL CONDITIONS FOR STAR FORMATION IN CLUSTERS: PHYSICAL AND KINEMATICAL STRUCTURE OF THE STARLESS CORE Oph A-N6

We present high spatial (<300 AU) and spectral (0.07 km s−1) resolution Submillimeter Array observations of the dense starless cluster core Oph A-N6 in the 1 mm dust continuum and the 3–2 line of N2H+ and N2D+. The dust continuum observations reveal a compact source not seen in single-dish observations, of size ∼1000 AU and mass 0.005–0.01 M☉. The combined line and single-dish observations reveal a core of size 3000 × 1400 AU elongated in a NW–SE direction, with almost no variation in either line width nor line center velocity across the map, and very small non-thermal motions. The deuterium fraction has a peak value of ∼0.15 and is >0.05 over much of the core. The N2H+ column density profile across the major axis of Oph A-N6 is well represented by an isothermal cylinder, with temperature 20 K, peak density 7.1 × 106 cm−3, and N2H+ abundance 2.7 × 10−10. The mass of Oph A-N6 is estimated to be 0.29 M☉, compared to a value of 0.18 M☉ from the isothermal cylinder analysis, and 0.63 M☉ for the critical mass for fragmentation of an isothermal cylinder. Compared to isolated low-mass cores, Oph A-N6 shows similar narrow line widths and small velocity variation, with a deuterium fraction similar to “evolved” dense cores. It is significantly smaller than isolated cores, with larger peak column and volume density. The available evidence suggests that Oph A-N6 has formed through the fragmentation of the Oph A filament and is the precursor to a low-mass star. The dust continuum emission suggests that it may already have begun to form a star.
Spectral Properties at a Threshold for Two-Channel Hamiltonians: II. Applications to Scattering Theory

Spectral properties and scattering theory in the low-energy limit are investigated for two-channel Hamiltonians with Schrodinger operators as component Hamiltonians. In various, mostly fairly “singular” settings asymptotic expansions of the resolvent are deduced as the spectral parameter tends to the threshold zero. Furthermore scattering theory for pairs of two-channel Hamiltonians is established. As an application of the expansions of the resolvent, asymptotic expansions of the scattering matrix are derived as the energy parameter tends to the threshold zero.
The Adoption Model of People Analytics in Higher Education: A Soft System Approach

The Adoption of the People Analytics process, especially in higher education, is highly complex and should be understood by scholars. We use seven stages of soft systems methodology to contribute to a deeper understanding of The Adoption of the People Analytics process, especially in higher education as a policy issue. The research was done in one of Indonesia's most prominent private universities. The method used was an exploratory study. In-depth interviews were done to gather data. The main interviewees were all stakeholders (H.R. Director, Business Incubator Director, Research Manager, and more) related to the process. The outcomes showed the actors involved and the obstacles experienced by the actors in transforming the existing condition into the analytics one. The paper proposed a people analytics adoption model in higher education using the soft system approach. The research limitation was due to the limited research object used, so broader research using this approach is urgent to understand the model.
Multi-Gate FD-SOI Single Electron Transistor for hybrid SET-MOSFET quantum computing

In this work we explore the fabrication and exper-imental characterization of multi-gate FD-SOI devices that can operate both as single electron transistors (SETs) and MOSFETs. FD-SOI SET operation is achieved with electrostatically induced tunneling barriers controllable by two barrier gates ($\mathrm{B}_{L}$ and $\mathrm{B}_{R}$) and a front gate (FG), the device operation being additionally tunable by a bottom gate (BG). Coulomb blockade current measurements at 10 mK and 4 K demonstrate the possibility of a dynamic transition from a FD-SOI MOSFET and SET operation, making this technology suitable for hybrid SET-MOSFET low power cryogenic circuits for quantum information processing. Room temperature back-gate characterization has been performed on ultra-thin film devices proving the effective reduction of charge noise for a specific bias configuration. This experimental work is a step forward towards low noise planar FD-SOI quantum dots based devices with tunable electrostatic control.
Testing approaches to statistical evaluation of connectivity estimates in epileptic brain based on simple oscillatory models

Here we study two different approaches to statistical evaluation of transfer entropy estimates in application to study of spike-wave discharges (SWDs), the main encephalographic manifestation of absence epilepsy, registered in local field potentials of WAG/Rij rats (genetic models). The first approach is to compare distributions of the estimators for baseline and pathological activity using traditional measures like t-test with additional corrections for multiple testing. The second approach is to make surrogate data and test whether the estimators achieved from real data differ from those achieved from surrogate data. The investigation is done based on the series simulated using simple oscillatory models of epileptic activity.
The extent of the Mg ii absorbing circumgalactic medium of quasars

We investigate the extent and the properties of the MgII cool, low–density absorbing gas located in the halo and in the circum–galactic environment of quasars, using a sample of 31 projected quasar pairs with impact parameter pd 0.3u ranges from fC � 1.0 at pd � 65kpc to fC � 0.2 at pd � 150kpc, and appears to be higher than for galaxies. Our findings support a scenario where the luminosity/mass of the host galaxies affect the extent and the richness of the absorbing MgII circum–galactic medium.
Magnetic arms of NGC6946 traced in the Faraday cubes at low radio frequencies

Magnetic fields in galaxies exist on various spatial scales. Large-scale magnetic fields are thought to be generated by the $\alpha-\Omega$ dynamo. Small-scale galactic magnetic fields (1 kpc and below) can be generated by tangling the large-scale field or by the small-scale turbulent dynamo. The analysis of field structures with the help of polarized radio continuum emission is hampered by the effect of Faraday dispersion (due to fluctuations in magnetic field and/or thermal electron density) that shifts signals from large to small scales. At long observation wavelengths large-scale magnetic fields may become invisible, as in the case of spectro-polarimetric data cube of the spiral galaxy NGC~6946 observed with the Westerbork Radio Synthesis Telescope in the wavelength range 17-23 cm. The application of RM Synthesis alone does not overcome this problem. We propose to decompose the Faraday data cube into data cubes at different spatial scales by a wavelet transform. Signatures of the `magnetic arms' observed in NGC~6946 at shorter wavelengths become visible. Our method allows us to search for large-scale field patterns in data cubes at long wavelengths, as provided by new-generation radio telescopes.
ournal of C osmology and A stroparticle hysics J The Sommerfeld enhancement for dark matter with an excited state

We present an analysis of the Sommerfeld enhancement to dark matter annihilation in the presence of an excited state, where the interaction inducing the enhancement is purely oﬀ-diagonal, such as in models of exciting or inelastic dark matter. We derive a simple and accurate semi-analytic approximation for the s -wave enhancement, which is valid provided the mass splitting between the ground and excited states is not too large, and discuss the cutoﬀ of the enhancement for large mass splittings. We reproduce previously derived results in the appropriate limits, and demonstrate excellent agreement with numerical calculations of the enhancement. We show that the presence of an excited state leads to generically larger values of the Sommerfeld enhancement, larger resonances, and shifting of the resonances to lower mediator masses. Furthermore, in the presence of a mass splitting the enhancement is no longer a monotonic function of velocity: the enhancement where the kinetic energy is close to that required to excite the higher state can be up to twice as large as the enhancement at zero velocity.
Local Operators from the Space of Vacua of Four Dimensional SUSY Gauge Theories

We construct local operators in short representations of supersymmetry algebras from polyvector fields on the quantum moduli space of vacua of supersymmetric gauge theories. These operators form a super Lie algebra under a natural bracket operation with structure constants determined by terms in the operator product expansion of the corresponding operators. We propose a formula for the superconformal index in terms of an index over polyvector fields on the moduli space of vacua. Along the way, we construct several models with moduli space of vacua corresponding to affine cones over smooth bases using the classical geometry of Severi varieties and the Landsberg-Manivel projective geometries corresponding to the Freudenthal magic square of exceptional Lie algebras. Curiously, we relate the Landsberg-Manivel projective geometries to the exceptional enhanced symmetry surprises of Dimofte and Gaiotto. Finally, we determine Beasley-Witten higher-derivative F-terms in new examples arising from Severi varieties and remark on their origin in classical projective duality.
Nurses' Perceptions of the Clinical Nurse Specialist Role Implemented in a Highly Specialized University Hospital in Spain

Purpose/Aims To explore nurses' perceptions of clinical nurse specialist practice as implemented in a highly specialized university hospital in Spain. Design A descriptive qualitative study was carried out in 3 inpatient wards, with a clinical nurse specialist within the team, at a high specialized university hospital in Spain. Method Semistructured interviews were conducted by purposive sampling with 17 selected nurses with at least 2 years of professional experience who voluntarily agreed to participate and signed the informed consent form. Analysis of the qualitative data was conducted according to Burnard's method of content analysis. The Consolidated Criteria for Reporting Qualitative Research checklist was used. Results Four main categories emerged from the analysis of the data: “qualities of the role-holder,” “role competencies in practice,” “integration with the team,” and “impact of the role” on nursing, the patient, and the organization. Conclusions The findings of this study have interesting implications for the development and implementation of clinical nurse specialist practice in healthcare organizations. They also provide evidence of the benefit of implementing clinical nurse specialist practice for improving the quality of care, patient outcomes, and healthcare efficiency.
The Controversies and Challenges in the Management of Twin Pregnancy: From the Perspective of International Federation of Gynecology and Obstetrics Guidelines

Abstract The rate of multiple pregnancy is increasing, mainly because of the widespread use of assisted reproduction techniques and families’ desire for twins. Twin pregnancy accounts for a higher risk of chromosomal abnormalities, structural malformations, and neonatal adverse events than singleton pregnancy. The presence of artery-vein anastomoses, unbalanced placenta sharing, and abnormal cord insertion in monochorionic twins is associated with twin complications such as twin-to-twin transfusion syndrome, selective intrauterine growth restriction, and twin anemia polycythemia sequence. Although many guidelines and studies have established and improved the processes about the antenatal surveillance and management of twin pregnancy, they also raise more controversies and challenges. This review aims to highlight the international consensus on the antenatal care of twin pregnancies and analyze the controversies and predicaments based on the published International Federation of Gynecology and Obstetrics guidelines and research.
Induced innovation, the distributive cycle, and the changing pattern of labour productivity cyclicality: a SVAR analysis for the US economy

The empirical literature on induced technical change has explored the long-run relationship between real wages and labour productivity but still lacks an explicit treatment of the implications of the wage-productivity nexus for the business cycle. The present paper aims to fill this gap. By employing a four-dimensional structural vector autoregressive (SVAR) model for the US economy (1948-2019), we test an extended version of the Goodwin model that includes aggregate demand and decomposes the labour share into real wages and labour productivity. This paper adds to the existing literature in some respects. First, it contributes to the induced innovation literature, by showing that wage shocks have positive and persistent effects on labour productivity at business cycle frequencies. Second, it adds to the debate and empirical evidence on the distributive cycle. Impulse response functions show that, even when decomposing the labour share, empirical evidence supports the Goodwin pattern, although the profit-led regime turns out to be driven more by technology than distributive shocks. Finally, we address two relevant cyclical stylized facts of the US economy: since the mid-1980s, the procyclical pattern of labour productivity has vanished, and real wages have no longer been correlated with employment over the business cycle. We explore the hypothesis that the two changes are linked. In light of the theory of induced innovation, we argue that the decline in the cyclical correlation between output and labour productivity can be explained by a lessened incentive to invest in labour-saving innovations due to missing wage growth in the upturn of the business cycle. Impulse response functions qualitatively support this intuition.
Open Research Online Technical Report: The CKC Challenge: Exploring Tools for Collaborative Knowledge Construction Other

The great success of Web 2.0 is mainly fuelled by an infrastructure that allows web users to create, share, tag, and connect content and knowledge easily. The tools for developing structured knowledge in this manner have started to appear as well. However, there are few, if any, user studies that are aimed at understanding what users expect from such tools, what works and what doesn’t. We organized the Collaborative Knowledge Construction (CKC) Challenge to assess the state of the art for the tools that support collaborative processes for creation of various forms of structured knowledge. The goal of the Challenge was to get users to try out diﬀerent tools and to learn what users expect from such tools—features that users need, features that they like or dislike. The Challenge task was to construct structured knowledge for a portal that would provide information about research. The Challenge design contained several incentives for users to participate. Forty-nine users registered for the Challenge; thirty-three of them participated actively by using the tools. We collected extensive feedback from the users where they discussed their thoughts on all the tools that they tried. In this paper, we present the results of the Challenge, discuss the features that users expect from tools for collaborative knowledge constructions, the features on which Challenge participants disagreed, and the lessons that we learned.
EARLY STAGES OF CLUSTER FORMATION: FRAGMENTATION OF MASSIVE DENSE CORES DOWN TO ≲ 1000 AU

In order to study the fragmentation of massive dense cores, which constitute the cluster cradles, we observed the continuum at 1.3 mm and the CO (2–1) emission of four massive cores with the Plateau de Bure Interferometer in the most extended configuration. We detected dust condensations down to ∼0.3 M☉ and separate millimeter sources down to 0. ″4 or ≲ 1000 AU, comparable to the sensitivities and separations reached in optical/infrared studies of clusters. The CO (2–1) high angular resolution images reveal high-velocity knots usually aligned with previously known outflow directions. This, in combination with additional cores from the literature observed at similar mass sensitivity and spatial resolution, allowed us to build a sample of 18 protoclusters with luminosities spanning three orders of magnitude. Among the 18 regions, ∼30% show no signs of fragmentation, while 50% split up into ≳ 4 millimeter sources. We compiled a list of properties for the 18 massive dense cores, such as bolometric luminosity, total mass, and mean density, and found no correlation of any of these parameters with the fragmentation level. In order to investigate the combined effects of the magnetic field, radiative feedback, and turbulence in the fragmentation process, we compared our observations to radiation magnetohydrodynamic simulations and found that the low-fragmented regions are reproduced well in the magnetized core case, while the highly fragmented regions are consistent with cores where turbulence dominates over the magnetic field. Overall, our study suggests that the fragmentation in massive dense cores could be determined by the initial magnetic field/turbulence balance in each particular core.
Micro-Tesla Offset in Thermally Stable AlGaN/GaN 2DEG Hall-effect Plates using Current Spinning

This letter describes the characterization of a low-offset Hall-effect plate using the AlGaN/GaN two-dimensional electron gas(2DEG). Four-phase current spinning was used to reduce sensor offset voltage to values in the range of 20 nV, which corresponds to a low residual offset of 2.6 micro-Tesla when supplied with low voltages (0.04 to 0.5V). These offsets are 50x smaller than the values previously reported for GaN Hall-effect plates, and it is on par with state-of-the-art silicon Hall-effect plates. In addition, the offset does not exceed 10 micro-Tesla even at higher supply voltage of 2.34V. The sensor also shows stable current-scaled sensitivity over a wide temperature range of -100C to 200C, with temperature drift of -125 ppm/C. This value is 3x better than state-of-the-art Silicon Hall-effect plates. Additionally, the sensor's voltage sensitivity (57 mV/V/T) is also similar. Because of their low offset values, AlGaN/GaN Hall-effect plates are viable candidates for low-field and high temperature magnetic sensing in monolithic GaN systems used in extreme temperature environments such as power inverter, down-well, combustion, and space applications.
Exact solutions for driven-diffusive systems: Excess-mass formation and phase transitions

Zugriff auf den Volltext ist aus datenschutzrechtlichen Grunden gesperrt, neue Version unter DuEPublico-ID 31005 A totally asymmetric exclusion process on a ring is investigated in which particles can move one or two sites. Special attention is spent to the high-speed case where particles are not allowed to move a single site if they could move two sites. The stationary state is calculated exactly in the framework of the matrix-product ansatz. Independently of the update this process evolves into subspace of the configuration space and can lead to the formation of an excess hole. One observes two phases where its velocity takes different values which are calculated exactly from the normalization-generating function. Numerically computed density profiles show an interesting algebraic form as a limit of a shock profile. For continuous time the process turns out to be related to the ASEP with a single defect particle and for synchronous update it leads to a natural defect dynamics. For the general definition of the process with maximum velocity two, from an exact analysis of the two-particle sector we find that the distribution of inter-particle distance can oscillate. This is underlined in the thermodynamic limit by an improved mean-field theory which shows a remarkably good agreement with simulations. The main focus of this work is the exact solution of lattice models by matrix-product ansatz. We finally obtain stationary states also for related processes. Especially considerable is a new formulation of steady states for parallel dynamics like the ASEP with open boundaries as a product of a pair-factorized and a matrix-product state.
A proof of Demailly's strong openness conjecture

In this article, we solve the strong openness conjecture on the multiplier ideal sheaf associated to any plurisubharmonic function, which was posed by Demailly. The multiplier ideal sheaf associated to a plurisubharmonic function, which is an invariant of the singularities of the psh function, plays an important role in several complex variables and complex geometry. Various properties about the multiplier ideal sheaves associated to plurisubharmonic functions have been discussed (e.g., see [25], [7], [30], [31]). Demailly’s strong openness conjecture means that the strong openness property about the multiplier ideal sheaf holds. In the present article, we establish such a useful strong openness property on the multiplier ideal sheaf associated to any plurisubharmonic function; i.e., Demailly’s strong openness conjecture is true. 1.1. Organization of the paper. The paper is organized as follows. In the present section, we recall the statement of the strong openness conjecture posed by Demailly and present the main result of the present paper: a solution of the strong openness conjecture. In Section 2, we recall or give some preliminary lemmas used in the proof of the main result. In Section 3, we give the proof of the strong openness conjecture and present some consequences by combining the conjecture with some well-known results.