Miracle-dz/UniFAR-FTUs huggingface dataset:
Robust microgrids for distribution systems with high solar photovoltaic penetration

: A microgrid is an appropriate concept for urban areas with high penetration of renewable power generation, which improves the reliability and eﬃciency of the distribution network at the consumer premises to meet various loads such as domestic, industrial, and agricultural types. Microgrids comprising inverter-based and synchronous generator-based distribution generators can lead to the instability of the system during the islanded mode of operation. This paper presents a study on designing stable microgrids to facilitate higher penetration of solar power generation into a distribution network. A generalized small signal model is derived for a microgrid with static loads, dynamic loads, energy storages, solar photovoltaic (PV) systems, and diesel generators, incorporating the features of dynamic systems. The model is validated by comparing the transient curves given by the model and a transient simulator subjected to step changes. The result shows that full dynamic models of complex systems of microgrids can be built accurately, and the proposed microgrid is stable for all the considered loading situations and solar PV penetration levels according to the small signal stability analysis.
Structure and dynamics of immigration in the municipalities of northwestern Italy

In less than a century, Italy has been characterized by profound changes in migration phenomena. From a country of origin to a country of destination of international migration flows, it has seen a strong and rapid intensification of incoming migration, and then reached a phase of stabilization. In the first phase, immigration mainly affects metropolitan areas and industrial zones. While in the second phase, the presence of foreigners becomes a structural phenomenon, characterized by a prolonged presence. In particular, there is a trend toward the territorial spread of the phenomenon and the increasing peripheral configuration of areas with a high concentration of foreigners (Costarelli and Mugnano, 2017; Bergamaschi et al. 2021), a consequence of a suburbanization process, that is, the progressive displacement of the foreign population from the center to the more peripheral areas of cities (Avallone and Torre, 2016) and in suburban municipalities around major cities and metropolitan areas (Borruso and Murgante, 2013). Although migration flows develop without planning and control, settlement regularities are observed, knowledge of which is crucial for the implementation of effective policies at the local level. Regularities that seem to depend mainly on the fact that specific patterns of residential settlement related to each ethnic group emerge, often shaped by vocational occupation (Costarelli and Mugnano, 2017). Specifically, three prevalent settlement patterns stand out: a metropolitan pattern, attributable to communities with a strong imbalance in gender structure, employed mostly in family services or commercial activities, such as the Filipino community, which has a substantial presence in the Milanese context; a diffuse pattern in the face of a greater range of employment opportunities, as in the case of three of the most widespread ethnic groups: Romanians, Albanians and Moroccans; and a border pattern, of communities coming from countries bordering Italy (Istat, 2022e). The aim is to identify the spatial pattern of the presence of foreigners in the Northwest, one of the Italian areas that most attracts migration flows. With this in mind, in the next section we introduce spatial autocorrelation data and techniques, while in the following paragraphs we focus on analyzing the share of foreigners at the municipal level both to observe current spatial concentrations and to outline the evolution of spatial clusters in recent decades. Concluding remarks close the paper.
Analysing lexical richness in French learner language : what frequency lists and

Tidball, F. and Treffers­Daller, J. (2008) Analysing lexical richness in French learner language: what frequency lists and teacher judgements can tell us about basic and advanced words. Journal of French Language Studies, 18 (3). pp. 299­ 313. ISSN 0959­2695 doi: https://doi.org/10.1017/S0959269508003463 (Special issue: knowledge and use of the lexicon in French as a second language) Available at http://centaur.reading. ac.uk/20661/
Central Lancashire Online Knowledge (CLoK)

—Mobile applications are constrained by the available memory of mobile devices. We present C-RAM, a system that uses cloud-based memory to extend the memory of mobile devices. It splits application state and its associated computation between a mobile device and a cloud node to allow applications to consume more memory, while minimising the performance impact. C-RAM thus enables developers to realise new applications or port legacy desktop applications with a large memory footprint to mobile platforms without explicitly designing them to account for memory limitations. To handle network failures with partitioned application state, C-RAM uses a new snapshot-based fault tolerance mechanism in which changes to remote memory objects are periodically backed up to the device. After failure, or when network usage exceeds a given limit, the device rolls back execution to continue from the last snapshot. C-RAM supports local execution with an application state that exceeds the available device memory through a user-level virtual memory: objects are loaded on-demand from snapshots in ﬂash memory. Our C-RAM prototype supports Objective-C applications on the unmodiﬁed iOS platform. With C-RAM, applications can consume 10 × more memory than the device capacity, with a negligible impact on application performance. In some cases, C-RAM even achieves a signiﬁcant speed-up in execution time (up to 9.7 × ).
Reconfigurable Resonant DC-DC Bidirectional Converter for Wide Output Voltage Applications

The bidirectional DC-DC converters are essential for various applications such as electric vehicles, energy storage systems and distributed energy systems. The conventional bidirectional DC-DC converters has limited soft switching region, which further reduces the wide output voltage operation. The bidirectional resonant converters are most suitable for wide voltage applications due to its gain characteristics and soft switching capabilities. However, the LLC/CLLC-based topologies can provide wide output voltage by operating the converter in wide frequency range, which affects the performance of the converter. This article proposes a reconfigurable resonant DC-DC bidirectional converter for wide output voltage applications. This converter integrates two resonant networks (CLLC and CLLC-C) using topology morphing for wide output voltage operation. The converter has an additional feature of soft switching for the reverse power transfer. The gain characteristics shows the regulation of the output voltage over a wide range within a narrow operating frequency. In addition, the converter has the inherent soft startup capability to prevent inrush currents or voltage spikes during startup. The detailed analysis and design of the proposed reconfigurable converter that can operate over a wide range of output voltages is presented in this article. Additionally, a laboratory prototype of the 500 W is developed to validate the operation of the proposed converter.
“A River Runs Through It”: Crossing the Meuse in Batenburg (The Netherlands)

The dialects spoken in the Dutch region Land van Maas en Waal, between the two rivers Meuse and Waal, are usually classified as a mixed dialect group exhibiting characteristics of the dialects of both Brabant and Gelderland. The perceptual map of the dialects paints a different picture as it shows a division between the speakers in the southern part of the region, who regard their dialect as more related to Brabant dialects, while speakers in the northern part feel more connected with the dialects spoken to the north of the Waal. The present paper attempts to explain this difference in perception by looking at the contacts the inhabitants of the small town of Batenburg had across the river. Materials used for this study include interviews with elderly people in Batenburg and data from the municipal archives.
Antenna pointing mechanism for ESA ENVISAT polar platform

INTA is currently developing a two-degree-of-freedom antenna pointing mechanism (APM) as part of the ESA ENVISAT POLAR PLATFORM (PPF) program. This mechanism will drive a Ka-band antenna within the Data-Relay Satellite System (DRS) on board the Polar Platform satellite. The first mission using PPF is ENVISAT, which is expected to be flown in 1998. This paper describes the main requirements, design, and test results of this pointing system, as well as the main technical problems from customer requirements and how those have been faced to achieve a final design.
Professional choices and personal values: Similarities and differences between Schein’s career anchors and Schwartz basic values

Values, beliefs and motivations lead every personal choice, including professional decisions. Consistency between personal values and career choices is essential to achieve job satisfaction and to attain positive career outcomes and self-realization. Schwartz and Bilsky (1987) propose a framework of ten basic values, measured through the Portrait Value Questionnaire, related to the universal needs of existence. In their theory, the pursuit of some of these values may conflict, while others are consistent. Aiming to clarify the mutual relationships among the ten basic values, these are represented in a circular shape, according to their similarities and dissimilarities (Figure 1), with a contraposition between openness to change (values of stimulation and self-direction) and conservation (security, conformity, and tradition), and between self-enhancement (hedonism, achievement, power) and self-transcendence (universalism, benevolence). Some authors have proposed specific work values scales obtained by adapting Schwartz’s basic values to the work environment (see, e.g., Pike, 1996; Porto and Tamayo, 2003; Avallone, 2009).
Development of Glass-Based Micro-Patterned Dry Film Bonding for mm-W Device Integration

A micro-patterned dry film (MPDF) bonding method based on an advanced glass packaging process is developed for the fabrication and integration of millimeter-wave (mm-W) devices. Owing to the reduction of contact areas between dry films and substrates, the MPDF achieved by lithography technology can effectively mitigate the formation of voids during traditional adhesive bonding and negative impact of polymers on electrical properties. The dependence of void-free behaviors and electrical properties on various micro patterns is investigated. For demonstration, a V-band glass-based double-sided gap waveguide is fabricated by the proposed MPDF bonding. The measured S-parameters are consistent with the simulated ones. It is verified that the proposed MPDF bonding can deal with complex bonding surfaces and can be successfully applied in the fabrication and integration of mm-W and THz devices.
Ochratoxin A: Overview of Prevention, Removal, and Detoxification Methods

Ochratoxins are the secondary metabolites of Penicillium and Aspergillus, among which ochratoxin A (OTA) is the most toxic molecule. OTA is widely found in food and agricultural products. Due to its severe nephrotoxicity, immunotoxicity, neurotoxicity, and teratogenic mutagenesis, it is essential to develop effective, economical, and environmentally friendly methods for OTA decontamination and detoxification. This review mainly summarizes the application of technology in OTA prevention, removal, and detoxification from physical, chemical, and biological aspects, depending on the properties of OTA, and describes the advantages and disadvantages of each method from an objective perspective. Overall, biological methods have the greatest potential to degrade OTA. This review provides some ideas for searching for new strains and degrading enzymes.
The Application of an Evolutionary Programming Process to a Simulation of the ETEX Large-Scale Airborne Dispersion Experiment

Airborne tracer simulations are typically performed using a dispersion model driven by a high-resolution meteorological model. Besides solving the dynamic equations of momentum, heat, and moisture on the resolved model grid, mesoscale models must account for subgrid-scale fluxes and other unresolved processes. These are estimated through parameterization schemes of eddy diffusion, convection, and surface interactions, and they make use of prescribed parameters set by the user. Such “free” model parameters are often poorly constrained, and a range of plausible values exists for each. Evolutionary programming (EP) is a process to improve the selection of the parameters. A population of simulations is first run with a different set of parameter values for each member, and the member judged most accurate is selected as the “parent” of a new “generation. ” After a number of iterations, the simulations should approach a configuration that is best adapted to the atmospheric conditions. We apply the EP process to simulate the first release of the 1994 European Tracer Experiment (ETEX) project, which comprised two experiments in which a tracer was released in western France and sampled by an observing network. The EP process is used to improve a simulation of the RAMS mesoscale weather model, with weather data collected during ETEX being used to “score” the individual members according to how well each simulation matches the observations. The meteorological simulations from before and after application of the EP process are each used to force a dispersion model to create a simulation of the ETEX release, and substantial improvement is observed when these are validated against sampled tracer concentrations.
Academic career and gender inequalities in Brazil: the effect of postdoctoral mobility abroad

: Empirical studies have pointed out that academic mobility can increase social capital, contribute to collaborations, and directly influence overall career success (Dueñas-Fernández, Iglesias-Fernández & Llorente-Heras, 2013). However, it is also known that both academic mobility and international scientific collaborations can be negatively impacted by gender inequality. Regarding international mobility, women are underrepresented in all areas of knowledge (Momeni et al., 2022). In science, immobility or low mobility is commonly associated with slower career progression; scarce opportunities to hold coordination and management positions ("glass ceiling"); less insertion in international collaboration networks;
EFFECT OF INTERMITTENT POSITIVE PRESSURE BREATHING ON PULMONARY CIRCULATION IN EMPHYSEMA

Pulmonary hypertension in emphysema is thought to be due to a combination of structural damage to the lung and vasoconstriction (Ferrer and Harvey, 1959). Experimental observations in the dog (Nahas et al., 1954) and man (Cournand, 1950) indicate that hypoxia causes pulmonary vasoconstriction. Therefore hypoxia in emphysema may contribute to the increase of pulmonary arterial pressure. However, correction of hypoxia in emphysematous subjects has not consistently resulted in a decrease of pulmonary arterial pressure (Westcott et al., 1951; Mounsey et al., 1952; Wilson, Hoseth and Dempsey, 1955) and this suggests that some other factor may be responsible. There is clinical evidence that when CO2 retention occurs in patients with emphysema, severe pulmonary arterial hypertension develops (Fishman and Richards, 1956; Harvey et al., 1951). The present study was designed to investigate the effect of a decrease in arterial Pco2 produced by mechanical hyperventilation on the pulmonary circulation of patients with emphysema.
Quantifying operation tween le-sed Hanabi ents ing formation eory

With increasing abilities of artiﬁcial systems and agents, it has been proposed to design those systems to behave cooperatively towards human users. However, it is often unclear how to evaluate whether a cooperation in human-machine interaction takes place or how to even quantitatively describe such a cooperation. We have previously proposed a framework to quantify the degree of cooperation in an interaction between two agents, using novel measures from information theory. We here extend the initial evaluation of this framework by applying the proposed measure to rule-based artiﬁcial agents playing Hanabi. We show that the measure correlates with the number of points scored by the agents and that the framework allows to describe uni-directional interactions between stronger and weaker players. The proposed framework may be used to evaluate and guide HMI design towards more cooperative interactions, which is believed to lead to a more pleasant user experience.
Moho Inversion by Gravity Anomalies in the South China Sea: Updates and Improved Iteration of the Parker‐Oldenburg Algorithm

The Moho is the interface between crust and mantle, and accurate location of the Moho is important for both resource exploration and deep earth condition and structural change investigations. The theory of the traditional Parker‐Oldenburg (P‐O) method is quite simple and it is widely applied in the frequency domain of Moho depth inversion. However, Moho fluctuation simulations using the P‐O method are not reliable because of the lack of field geographic data constraints during the inversion process and the excessively smoothing of data details caused by using filters to correct the source data signals. To solve those problems, we propose an improved iteration P‐O method with a variable density contrast model, the iterative process is constrained by geological data in the inversion parameters, and the variable depth of the gravity interface is iterated using an equivalent form of upward continuation in the Fourier domain, which is more stable and convergent than downward continuation term in original P‐O method. Synthetic experiments indicate that improved method has the better consistency among the simulations than original method, and our improved method has the smallest root mean square (RMS) of 0.59 km. In a real case, we employed the improved method to invert for the Moho depth of the South China Sea (SCS), and the RMS between our Moho depth model and the seismological data is the smallest value of 2.27 km. The synthetic experiments and application of the model to the SCS further prove that our method is practical and efficient.
Tracing data: A survey investigating disciplinary differences in data citation

Abstract Data citations, or citations in reference lists to data, are increasingly seen as an important means to trace data reuse and incentivize data sharing. Although disciplinary differences in data citation practices have been well documented via scientometric approaches, we do not yet know how representative these practices are within disciplines. Nor do we yet have insight into researchers’ motivations for citing—or not citing—data in their academic work. Here, we present the results of the largest known survey (n = 2,492) to explicitly investigate data citation practices, preferences, and motivations, using a representative sample of academic authors by discipline, as represented in the Web of Science (WoS). We present findings about researchers’ current practices and motivations for reusing and citing data and also examine their preferences for how they would like their own data to be cited. We conclude by discussing disciplinary patterns in two broad clusters, focusing on patterns in the social sciences and humanities, and consider the implications of our results for tracing and rewarding data sharing and reuse.
Informed Content Delivery Across Adaptive Overlay Networks

Overlaynetworkshave emergedasa powerful andhighly flexible methodfor deliveringcontent.We studyhow to optimizethroughputof largetransfersacrossrichly connected, adapti veoverlaynetworks,focusingon thepotentialof collaborati ve transfersbetween peersto supplementongoingdownloads.First, we make the case for an erasure-resilient encodingof the content.Using the digital fountainencodingapproach,end-hostscanefficiently reconstruct theoriginalcontentof size from asubsetof any symbolsdrawn from a large universeof encodedsymbols.Suchan approachaffords reliability anda substantialdegreeof application-level flexibility , as it seamlesslyaccommodatesconnectionmigration and parallel transferswhile providing resilienceto packet loss.However, sincethe setsof encodedsymbolsacquiredby peersduring downloadsmayoverlapsubstantially, caremustbetakento enable themto collaborateeffectively. Our main contribution is a collection of usefulalgorithmictoolsfor efficientestimation,summarization, and approximatereconciliationof setsof symbolsbetween pairsof collaboratingpeers,all of which keepmessagecomplexity andcomputationto a minimum.Throughsimulationsandexperimentson a prototypeimplementation,we demonstratethe performancebenefitsof our informedcontentdelivery mechanismsand how they complementexistingoverlaynetwork architectures. JohnByers, Jefrey Considineand Stanislav Rost were supported in part by NSF grantsANI-0093296 and ANI-9986397. Michael Mitzenmacherwas supportedin part by NSF grants CCR-9983832,CCR-0118701,CCR-0121154,and an Alfred P. SloanResearchFellowship. Permissionto make digital or hard copies of all or part of this work for personalor classroomuse is grantedwithout fee provided that copies are not made or distributed for profit or commercialadvantageand that copies bear this notice and the full citation on the first page.To copy otherwise,to republish,to post on servers or to redistribute to lists, requiresprior specific permissionand/ora fee. SIGCOMM’02, August 19-23, 2002, Pittsburgh, Pennsylvania, USA. Copyright 2002ACM 1-58113-570-X/02/0008. $5.00 Categoriesand SubjectDescriptors C.2 [Computer Systems Organization]: Computer CommunicationNetworks GeneralTerms Algorithms,Measurement, Performance
Complete Open-Stopband Suppression Using Sinusoidally Modulated Anisotropic Metasurfaces

A novel and general approach is presented for the complete suppression of the open-stopband (OSB) effects in circularly polarized 1-D periodic leaky-wave antennas (LWAs) using anisotropic modulated metasurfaces (MTSs). A theoretical justification of this behavior is found through the rigorous treatment of the canonical problem of an infinite homogenized impedance surface sinusoidally modulated along the propagation direction. By deriving a closed-form solution of this problem at broadside scan, it is shown that, while the sinusoidally modulated isotropic impedance exhibits a null of the attenuation constant, the complex propagation constant for the proposed anisotropic modulation has a finite value and a regular behavior. A closed-form formula for the leakage constant $\boldsymbol {\alpha }$ is also derived, allowing for an accurate design of the aperture field amplitude. The full-wave analysis of a patch-based implementation of the MTS is in excellent agreement with the results based on the homogenized impedance model, thus demonstrating the practical applicability of the theoretical results. The elimination of the OSB behavior allows for the design of LWAs able to scan the beam from backward (BWD) to forward (FWD) without any frequency regions of blindness.
Solving Perspective-n-Point Problem with Spherical Regression

This paper proposes a spherical regression relaxation solution for perspective-n-point problem. The problem is formulated as a minimization problem using angle error based spherical cost. With the relaxation of scale constraint, translation parameters can be calculated in closed form. Then, rotation parameters are immediately solved in closed form using spherical regression. The scale, translation and rotation parameters are alternatively estimated while keeping the others fixed until convergence. The proposed method is simple and able to cope with arbitrary central camera models. Experiment results show that the proposed method achieves accuracy almost the same as the maximum-likelihood estimator, and its computational efficiency is even comparable with some state-of-the-art non-iterative methods.