bluuebunny/crossref_metadata_2025_split huggingface dataset:
Improved weighted average current control of LCL grid‐connected inverter and analysis of its order reduction characteristics
Authors: Yang Xingwu , Meng Zhicheng , He Xinyi , Mi Yang , J Liang , Wang Yani 
Published: March 2022

AbstractLCL grid‐connected inverter is good at suppressing the high frequency current, but the inherent resonance frequency of the filter will lead to the resonance peak. Therefore, the active damping is commonly used to suppress the resonance effect. Since the weighted average current control can provide better bandwidth for the system with high frequency and has the characteristics of system reduction, it is often used to replace the traditional dual‐loop current control in the application of LCL grid‐connected inverter. However, the reduction of current resonance peak at the grid side by the weighted average current control is limited, so it is necessary to combine the grid voltage and capacitor current feedback loop to achieve the ideal results. In weak grid, the newly added feedback path would easily lead to the loss of system reduction, which results in the existence of transient variables in the transfer function affecting the stability of the control strategy. To solve this technical problem, this paper addresses a new control method of LCL grid‐connected inverter based on weighted average current control. By adding a capacitor current feedback path, pole‐zero cancellation of the control system is realised as to reduce the systematic order and improve the robustness of the controller under the time‐varying weak grid.
Real‐time pricing response attack in smart grid
Authors: Liu Yang , Tian Jue , Yuan Xiaoshu , Ye Binger , Sang Zi , Yao Xiangzhen , Li Lin , Liu Ting 
Published: March 2022

AbstractReal‐time pricing is an attractive tariff for demand response programs, in which consumers could provide load flexibility by adjusting their electricity consumption in response to time‐varying electricity prices. This paper reveals a new threat called real‐time pricing response attack (RPRA), which manipulates consumers' electricity consumption by tampering with electricity price signals. Simulations are performed in IEEE 24‐bus, 39‐bus, and 118‐bus systems, and the results show that 8% to 28% of the transmission lines could be overloaded by the attack, which could cause serious security problems. Results of sensitivity analysis indicate that the attack effects are influenced by various factors, such as DR models, price elasticity, line capacities etc. To defend against the RPRA attack, we have proposed various detection and mitigation strategies.
Degradation characteristics of insulation near aluminium foil edges inside dry‐type bushing cores under electrothermal compound stress
Authors: Chen Ming , Liu Xuandong , Shao Yuhang , Shang Gaoyi , Zhang Qiaogen , Tang Hao , Liu Libao 
Published: March 2022

AbstractInsulation breakdown of dry‐type valve‐side bushing cores under electrothermal compound stress has become a key factor limiting the safe and stable operation of the converter transformer. Based on slices of the real bushing core, it is observed for the first time that fold, peeling off, and fracture defects exist near the aluminium (Al) foil edge, accompanied by many metal spikes with a curvature radius <4 μm. Coupled with a capacitor screen thickness of ∼2 mm, an electrical tree model is designed to simulate insulation defects near aluminium foil edges inside dry‐type bushing cores, whose insulation degradation characteristics under electrothermal compound stress are investigated accordingly. The results show that high temperature significantly increases the dielectric loss heat energy density and Joule heat energy density, accelerating the insulation degradation near Al foil edges. The parallel crepe paper interface significantly accelerates the growth of electrical trees under AC‐superimposed positive DC voltage, while this effect is not significant under AC voltage. As the crepe paper consists of wooden fibres of 10 μm diameter, the electrical trees tend to grow along interfaces between fibres and epoxy resin to form “feathery” electrical trees in epoxy resin‐impregnated paper samples.
Collision‐free cooperative Unmanned Aerial Vehicle protocols for sustainable aerial services
Authors: Fabra Francisco , Vegni Anna Maria , Loscrí Valeria , Calafate Carlos T. , Manzoni Pietro 
Published: March 2022

AbstractUnmanned Aerial Vehicles (UAVs) are offering many global industry sectors the opportunity to adopt more sustainable business models. They offer innovative ways of managing resources and water and offer newer opportunities to address key challenges in many areas like border surveillance, precision agriculture and search and rescue missions. All these new applications areas tend to require the cooperation of groups, or “swarms” of UAVs to provide collaborative sensing and processing solutions. These new scenarios impose new requirements in terms of safety, coordination, and operation management. This paper provides an overview of some of the technical challenges that multirotor UAVs are still facing in terms of aerial coordination and interaction. In this regard, it focusses on recent developments available in the literature and presents some contributions realised during the past few years by the authors addressing UAV interaction to achieve collision‐free flights and swarm‐based missions. Based on the analysis provided in this work, the paper is able to provide insight into the challenges still open that need to be solved in order to enable effective UAV‐based solutions to support sustainable aerial services.
Protecting communities during the COVID-19 global health crisis: health data research and the international use of contact tracing technologies
Authors: Cinque Toija 
Published: March 2022

AbstractSeen presently during the global COVID-19 global health crisis are the ways government agencies are enabled by digital data collection through the development of contact tracing technologies (CTT) and mobile-based tracking in their effort to limit the spread of the COVID-19 coronavirus. While recent research has focused on contact tracing and privacy (Simko et al. 2020. Contact tracing and privacy: studying opinion and preferences), contact tracing and data protection (Abeler et al. 2020. JMIR mHealth uHealth 8(4): e19359) contact tracing system and information security considerations (Gvili, 2020. Security analysis of the Covid-19 contact tracing specifications by Apple inc. and Google inc), CTT and the data collected and curated have not been framed to date via their intersections with health-datafication and the research participant. As this article outlines, each is strongly linked to public health, healthcare industries and to modalities of capturing and producing knowledge that is expected to help in addressing public health concerns. Where different countries and regions are implementing a range of social distancing and/or social isolation recommendations, some have introduced contact tracing and quick response (QR) barcodes on mobile device apps. To additionally explore access, uptake and use that accompany such technologies, the International Responses to COVID-19 Contact Tracing: COVID-19 APP Uptake and Use Survey was developed and used with participants living in Singapore, Australia, the United States and the United Kingdom. The article concludes that in the process and counter to the common good or public interest objective that all are kept safe, new forms of risk and exposure are being produced.
Relationship of health rating and HIV-related stigma among people living with HIV: a community study
Authors: Gutiérrez Mónica , Brooks-Hawkins Jamal , Hassan Kenja , Wolfersteig Wendy 
Published: March 2022

AbstractThe purpose of this study was to understand the impact of stigma among a geographic population of people living with HIV in Maricopa County, Arizona. People living with HIV who experience stigma have lower medication adherence and fewer kept appointments. The people living with HIV patient survey was administered using both paper and online versions in the beginning months of 2019. A total of 296 respondents completed the survey for this study. Participants were recruited through multiple methods, including online sites, the Phoenix AIDS Walk, health clinics, and the identification of zip codes with high HIV prevalence rates. There was a significant relationship between health status and age, with those who reported a higher health rating, that of excellent or good, more likely to be 45 years of age or older, X2 (1, N = 296) = 4.812, p = 0.028. Researchers and health care providers must be attentive to these variations and intersecting stigmas when providing services across diverse populations, especially when working with a high-stigma population such as people living with HIV. Providers can take a more active role in helping people living with HIV to see how their perceptions and experience of HIV-related stigma may be taking a toll on their perceptions of their health, as well as their approach to treatment, and refer them to support groups or individual counseling. Strategies, policies, and messages should be tailored with cultural, social, and ethnic sensitivities in mind. To address these threats, policies must be created that reduce the impact of HIV-related stigma within various systems, including but not limited to the public health sector.
Cultures in the laboratory: mapping similarities and differences between Māori and non-Māori in engaging with gene-editing technologies in Aotearoa, New Zealand
Authors: Kathlene Lyn , Munshi Debashish , Kurian Priya , Morrison Sandra L. 
Published: March 2022

AbstractPublic engagement on rapidly advancing gene-editing technologies requires attention not merely to science and economics, but also to culture. In focusing on the similarities and differences between Indigenous and non-Indigenous perspectives on new and emerging genetic technologies, this article reports on a national survey in Aotearoa New Zealand among a stratified random sample of an equal number of Māori and non-Māori participants. Identifying approaches to the experimentation, use, and potential commercialization of genetic technologies, the article moves along the continuum of nuanced cultural insights into gene editing for purposes ranging from human medical treatments and food production to conservation of native species of plants and animals and pest eradication. The development of typologies using K-means cluster analysis reveals the public’s complex responses to genetic modification as well as gene editing. The article signals how recognizing a diversity of values on gene-editing technologies can help shape a robust policy design on the use and regulation of gene technologies in a variety of sectors and contexts.
X-ray investigation of long-range antiferromagnetic ordering in FeRh
Authors: Grimes M. , Gurung N. , Ueda H. , Porter D. G. , Pedrini B. , Heyderman L. J. , Thomson T. , Scagnoli V. 
Published: March 2022

We demonstrate a probe of long-range antiferromagnetic (AF) order in FeRh thin films using non-resonant magnetic x-ray scattering. In particular, x-rays at energies below the Fe K-edge have been used for the observation of magnetic Bragg peaks. Due to the low efficiency of the magnetic scattering, a grazing incidence geometry was used to optimise the diffracted intensity from the thin film samples. Based on Scherrer analysis, we estimate a coherence length similar to previous reports from x-ray magnetic linear dichroism (XMLD) experiments, indicating that domain sizes are limited to 40 nm which is consistent with the grain size. The temperature dependent behaviour of the AF order shows an inverse correlation with the emergence of the ferromagnetic (FM) moment, as expected from the phase diagram.
A molecular switch controls the impact of cholesterol on a Kir channel
Authors: Corradi Valentina , Bukiya Anna N. , Miranda Williams E. , Cui Meng , Plant Leigh D. , Logothetis Diomedes E. , Tieleman D. Peter , Noskov Sergei Y. , Rosenhouse-Dantsker Avia 
Published: March 2022

Significance
Cholesterol is one of the main components found in plasma membranes and is involved in lipid-dependent signaling enabled by integral membrane proteins such as inwardly rectifying potassium (Kir) channels. Similar to other ion channels, most of the Kir channels are down-regulated by cholesterol. One of the very few notable exceptions is Kir3.4, which is up-regulated by this important lipid. Here, we discovered and characterized a molecular switch that controls the impact (up-regulation vs. down-regulation) of cholesterol on Kir3.4. Our results provide a detailed molecular mechanism of tunable cholesterol regulation of a potassium channel.
Excitatory selective LTP of supramammillary glutamatergic/GABAergic cotransmission potentiates dentate granule cell firing
Authors: Tabuchi Eri , Sakaba Takeshi , Hashimotodani Yuki 
Published: March 2022

Significance
It is now established that many neurons can release multiple transmitters. Recent studies revealed that fast-acting neurotransmitters, glutamate and GABA, are coreleased from the same presynaptic terminals in some adult brain regions. The dentate gyrus (DG) granule cells (GCs) are innervated by the hypothalamic supramammillary nucleus (SuM) afferents that corelease glutamate and GABA. However, how these functionally opposing neurotransmitters contribute to DG information processing remains unclear. We show that glutamatergic, but not GABAergic, cotransmission exhibits long-term potentiation (LTP) at SuM-GC synapses. By the excitatory selective LTP, the excitation/inhibition balance of SuM inputs increases, and GC firing is enhanced. This study provides evidence that glutamatergic/GABAergic cotransmission balance is rapidly changed in an activity-dependent manner, and such plasticity may modulate DG activity.
A N400 event-related potential elicitation paradigm for Canadian French speakers*
Authors: Azevedo Nancy , Crestol Arielle , Berkun Kathleen , Papathanasopoulos Alexandra , Yamani Leen , Rokos Alexander , Kehayia Eva , Blain-Moraes Stefanie 
Published: March 2022

Abstract
The N400 event-related brain potential (ERP) can be used to evaluate language comprehension, and may be a
particularly powerful tool for the assessment of individuals who are behaviourally unresponsive. This study presents a set of
semantic violation sentences developed in Canadian French and characterizes their ability to elicit an N400 effect in healthy
adults. A novel set of 100 French sentences were created and normed through two surveys that assessed sentence cloze probability
(n = 98) and semantic plausibility (n = 99). The best 80 sentences (40 congruent; 40
incongruent) were selected for the final stimulus set and tested for their ability to elicit N400 effects in 33 French-speaking
individuals. The final stimulus set successfully generated an N400 effect in the grand-average across all individuals, and in the
grand-average within age groups (young, middle-age, and older adults). On a single-subject level, the final stimulus set elicited
N400 effects in 76% of the participants. The feasibility of using this stimulus set to assess semantic processing in behaviourally
unresponsive individuals was demonstrated in a case example of a French individual in a disorder of consciousness. These sentences
enable the inclusion of Canadian French speakers in this simple assessment of language comprehension abilities.
Accounts as acts of identity
Authors: Bella Spyridoula , Ogiermann Eva 
Published: March 2022

Abstract
This paper investigates accounts justifying the closures of businesses found on public signs in Athens and London
during the COVID-19 pandemic. The data for the study was drawn from a corpus of COVID-19-related public signage collected in the
two cities during the first lockdown. The accounts used on these signs are analysed as acts of identity and, specifically, as
discursive means deployed by the authors of the signs to project themselves and their businesses favourably. It is shown that the
accounts used at the micro-level of discourse align to various degrees with the dominant discourses surrounding the pandemic at
the macro-level and with the values these discourses draw upon. It is also shown that the accounts are used to reframe the
public’s understanding of the closures and to construct identities congruent with the interests of the business owners, ensuring
post-pandemic continuity.
The role of phonological short-term memory in second language phonology
Authors: Zahler Sara , Lord Gillian 
Published: March 2022

AbstractThis study reports on the production of the five Spanish vowels in stressed and unstressed contexts by English-speaking advanced learners of Spanish at two experience levels who differed according to phonological short-term memory (PSTM) capacity. Our findings indicate that learners with higher PSTM capacity were less likely to reduce both stressed and unstressed vowels in Spanish. Consequently, learners with higher PSTM in fourth-year Spanish courses produced vowels that were more native-like than lower PSTM fourth-year learners. On the other hand, higher PSTM graduate students of Spanish produced a Spanish vowel space that was more expanded than that of native Spanish, particularly for /u/, compared to lower PSTM graduate learners, who were more native-like. These findings suggest that PSTM does play a role in second language phonology, even at advanced levels, and may help to explain why individual differences in pronunciation exist even at very high levels of second language proficiency.
“A los niños se les habla en castellano”
Authors: Iglesias Álvarez Ana , Acuña Ferreira Virginia 
Published: March 2022

Resumen
El objetivo de este artículo es analizar datos orales obtenidos mediante entrevistas para llevar a cabo una investigación sobre las políticas lingüísticas familiares (PLF) en Galicia. El análisis revela la configuración de dos subtipos de transmisión lingüística intergeneracional: ‘doble desgalleguización’ y ‘regalleguización’. En ambos casos, la primera generación (los padres de nuestros informantes) está representada por hablantes de gallego que utilizaron el castellano en la crianza de sus hijos (nuestros informantes). Hablamos de doble desgalleguización cuando esta segunda generación mantiene el uso del castellano con la tercera (sus propios descendientes), mientras que la regalleguización se define por una recuperación del gallego. El nivel de conciencia sociolingüística de los informantes es muy bajo en el primer caso, que por ello interpretamos como una PLF implícita, guiada por el habitus (Bourdieu, 1991), mientras que la regalleguización se basa en una PLF marcada por la intervención y la planificación lingüística explícita (Bastardas, 2016).
Missing and Murdered Indigenous Women and Girls in Canada: A New Population Affinity Assessment Technique to Aid in Identification Using 3D Technology
Authors: Cuerrier-Richer Elisabeth 
Published: March 2022

Abstract
As of 2015, 204 cases of missing and murdered Indigenous women and girls (MMIWG) remained unsolved in Canada, making it a major concern for Canadian Indigenous communities, who are still pressing for the resolution of these cases. In forensic anthropology, the assessment of population affinity can be useful to help identify victims. Population affinity, previously referred to as ancestry, is evaluated based on morphological analyses, which examine the size and shape of skeletal features, and metric analyses, which utilise skeletal measurements. However, morphological analyses strongly depend on an anthropologist’s experience with human variation, which makes the analyses particularly challenging to reproduce and standardise. The purpose of this study is to improve the rigour of morphological analyses by using 3D technology to quantify relevant cranial nonmetric population affinity traits. As there is currently little morphological data available for the Canadian Indigenous population, this research aims to develop a new technique that could aid in the identification of MMIWG. The study comprised a total of 87 adult female crania, including 24 of Canadian Inuit origin, 50 of European descent and 13 of African descent. The samples were imaged using photogrammetry, then analysed using a 3D shape analysis in 3DS Max. Results show that this method is satisfactory in correctly evaluating population affinity with an accuracy of 87.36% (jackknifed: 80.46%) and an average repeatability of 97%. Unfortunately, the small Canadian Indigenous sample size impacted the applicability of the results and further research will be required before the technique can be used to aid in the identification of MMIWG in Canada. Key PointsMMIWG are over-represented as victims of violence and homicide in Canada.Population affinity provides biogeographic data to help search national databases.Cranial morphological variation can be quantified in 3D accurately and precisely.
Electromagnetically induced transparency metamaterials: theories, designs and applications
Authors: Zhu Lei , Dong Liang 
Published: March 2022

Abstract
Electromagnetically induced transparency (EIT) stems from a quantum system, where an opaque atomic medium appears the narrow transparent state within a wide absorption area. This phenomenon can be achieved by quantum interference of pumping light and detecting light at different energy levels of transitions. In the generation process of EIT effect, in addition to transparent state, the atomic medium is usually accompanied with a strong dispersion effect, which will bright about a significant reduction of light velocity, thus realizing many important applications, such as slow light propagations. Although the EIT effect has many important applications, its application scenarios are greatly limited due to the fact that EIT realization usually requires specific and complicated conditions, such as refrigeration temperature, high intensity laser, etc. Recently, the analogue of EIT effect in metamaterial has attracted increasing attentions due to its advantages such as controllable room temperature and large operating bandwidth. Metamaterial analogue of EIT effect has become a new research focus. In this article, we review current research progresses on EIT metamaterials. Firstly, we describe the theoretical models for analyzing EIT metamaterials, including the mechanical oscillator model and the equivalent circuit model. Then, we describe the simulations, designs and experiments of passive EIT metamaterials with fixed structures and active EIT metamaterials with tunable elements. Furthermore, the applications of EIT metamaterials in the areas of slow lights, sensings, absorptions and other fields are also reviewed. Finally, the possible directions and key issues of future EIT metamaterial researches are prospected.