bluuebunny/crossref_metadata_2025_split huggingface dataset:
Phase portrait‐based stability region estimation for grid‐connected VSC with PLL
Authors: Tang Yingyi , Li Yujun , Lu Yiyuan , Li Jiapeng 
Published: December 2022

AbstractHere, the stability region of grid‐connected VSC with phase locked loop (PLL) is estimated. First, the conservative stability region is derived via the classical Lyapunov method. Then an energy function is constructed as the general stable condition for the VSC system. Based on the constructed energy function, two estimation methods of the system stability region by approximation of phase trajectory are proposed. The stability regions by the proposed methods are less conservative than that by the classical Lyapunov method. A stability evaluation function for the initial states of the VSC system is further proposed based on the estimated stability region. Time‐domain simulations verify the correctness of the proposed methods and the effectiveness of the stability evaluation function.
Coordinated control of active disturbance rejection and grid voltage feedforward for grid‐connected inverters
Authors: Zhong Guang‐Xin , Wang Zhiteng , Zhou Jiahua , Li Jian , Su Qingyu 
Published: December 2022

AbstractThis paper introduces the research on the inductance‐capacitor‐capacitor‐inductance grid‐connected inverter using active disturbance rejection and grid voltage feedforward coordinated control technology. The pade approximation is performed on the inductance‐capacitor‐capacitor‐inductance filter to derive the first‐order discretization mathematical model of the system. Use the tracking differentiator to suppress the noise pollution of the input signal and smooth the sudden change of the signal. The interference and uncertainty in the system are expanded into state variables, and the linear expansion state observer is used to observe the state in real time, and the control rate of the system is reasonably selected. Grid voltage feedforward is used to suppress the harmonic influence of the grid voltage on the grid current. Finally, a digital simulation and hardware‐in‐the‐loop experimental simulation platform was built. The evaluation results show that the strategy has good control performance and can achieve high‐performance control of the grid‐connected system, so that the grid‐connected current of the system meets the grid‐connected standard total harmonic distortion (THD) less than 5%.
Reduced‐order active disturbance rejection control method for PEMFC air intake system based on the estimation of oxygen excess ratio
Authors: Ma Libo , Zhao Hongshan , Qu Yuehan , Zhao Shice , Yu Yang , Wei Wuqing 
Published: December 2022

AbstractTo solve the oxygen supply problem of proton exchange membrane fuel cell (PEMFC), this paper presents a reduced‐order active disturbance rejection control method for PEMFC air intake system based on the estimation of oxygen excess ratio(EOER‐RADRC). First, a control‐oriented third‐order nonlinear model was established based on PEMFC air intake system. Then, based on the control‐oriented model, the disturbance extended state observer was designed to solve the problem of unmeasured cathode pressure parameters in the calculation of oxygen excess ratio (OER), and realize the real‐time estimation of OER. Next, aiming at the large phase lag of active disturbance rejection control (ADRC), a reduced‐order ADRC method based on reduced‐order extended state observer was proposed by a variable substitution technique. So, the proposed method reduces the observation phase lag and improves the dynamic response performance under good anti‐disturbance ability. Finally, the simulation and hardware‐in‐the‐loop experience results showed that the proposed method has an excellent control effect compared with other methods.
PRODIGE – envelope to disk with NOEMA
Authors: Hsieh T.-H. , Segura-Cox D. M. , Pineda J. E. , Caselli P. , Bouscasse L. , Neri R. , Lopez-Sepulcre A. , Valdivia-Mena M. T. , Maureira M. J. , Henning Th. , Smirnov-Pinchukov G. V. , Semenov D. , Möller Th. , Cunningham N. , Fuente A. , Marino S. , Dutrey A. , Tafalla M. , Chapillon E. , Ceccarelli C. , Zhao B. 
Published: December 2022

Aims. We present high-sensitivity and high spectral-resolution NOEMA observations of the Class 0/I binary system SVS13A, composed of the low-mass protostars VLA4A and VLA4B, with a separation of ~90 au. VLA4A is undergoing an accretion burst that is enriching the chemistry of the surrounding gas, which provides an excellent opportunity to probe the chemical and physical conditions as well as the accretion process.
Methods. We observe the (12K–11K) lines of CH3CN and CH313CN, the DCN (3–2) line, and the C18O (2–1) line toward SVS13A using NOEMA.
Results. We find complex line profiles at disk scales that cannot be explained by a single component or pure Keplerian motion. By adopting two velocity components to model the complex line profiles, we find that the temperatures and densities are significantly different among these two components. This suggests that the physical conditions of the emitting gas traced via CH3CN can change dramatically within the circumbinary disk. In addition, combining our observations of DCN (3–2) with previous ALMA observations at high angular resolution, we find that the binary system (or VLA4A) might be fed by an infalling streamer from envelope scales (~700 au). If this is the case, this streamer contributes to the accretion of material onto the system at a rate of at least 1.4 × 10−6 M⊙ yr−1.
Conclusions. We conclude that the CH3CN emission in SVS13A traces hot gas from a complex structure. This complexity might be affected by a streamer that is possibly infalling and funneling material into the central region.
Comparative study of using periodic daily and long-term weather data for cooling system sizing and impact of thermal mass
Authors: Salehi Seyed Shahabaldin Seyed , Kurnitski Jarek , Thalfeldt Martin 
Published: December 2022

The energy efficiency of buildings is increasing due to energy performance requirements, and the basis for reaching high energy performance is a well-designed and insulated building envelope. Therefore, office buildings’ cooling needs depend primarily on solar and internal heat gains, whereas outdoor temperature has a significantly smaller effect. Furthermore, the highest cooling capacities may occur in spring or autumn when the solar angles are smaller. For that reason, the cooling systems of office buildings are required to be sized based on dynamic building performance simulations. Most of such designs in Northern Europe are performed using IDA ICE simulation software, which uses the ASHRAE Fundamentals heat balance method by default. The design calculations are carried out using a periodic steady-state method which consists of repetitive simulations of selected hot days until the building is not heated up from day to day using the final designed cooling capacity. The process of heating the space by thermal loads in buildings with high thermal mass and well-controlled solar heat gains takes a longer time than in traditional buildings. Thus, the effect of building thermal mass on reducing the design cooling loads might be underestimated.
In this paper, we analyze to what extent the ASHRAE Fundamentals method underestimates the effect of the building thermal mass. For this purpose, the cooling system sizing with a focus on a zonal level according to the ASHRAE handbook is compared to the system sizing results of a 30-year simulation using IDA ICE simulation software. A hypothetical office building with four offices toward North, West, South, and East is developed and used for the simulations. The building body comprises four alternatives A to D, which can also be called: very light, light, heavy, and very heavy. The study showed that the current method of cooling design did not significantly underestimate the thermal mass effect in buildings with heavy construction. The thermal mass impact was at its maximum in the southern office, resulting in 5 W/m2 or approximately 20% difference between structures A and D’s cooling capacities using both simulation methods. The difference between results from simulation methods is negligible. However, the simulations for more accurate cooling system sizing with criteria related to the operative temperature need to be done using specific weather files developed for simulations in longer periods.
Transmittance thresholds of electrochromic glazing to achieve annual low-glare work environments
Authors: Wienold Jan , Jain Sneha , Andersen Marilyne 
Published: December 2022

A recent study on the glare protection performance of electrochromic (EC) glazing showed that visible transmittance levels lower than 0.6% are necessary to achieve comfortable situations for sun positions, that were close to the central field of view. However, the question that arises is how often such situations occur throughout the year and how the glare protection performance of EC systems is for typical office situations for different climates and orientations. This study aims to quantify the annual performance for such configurations by applying improved simulation methods to conduct annual glare simulations and comparing them to the EN17037 classifications. The enhancement of the simulation method compared to existing methods was necessary to correctly consider the blurring effect in the lens of the eye – neglecting this would lead to an overestimation of glare.We found that for mid and north European climates the extreme situations do not occur such often, so that the ECglazing systems being able to switch to transmittance levels of 1% can mitigate glare throughout the year reasonably well for typical office situations and reaches typically the highest glare protection category according to EN17037 for a viewing direction, that is parallel to the facade. For more sunny climates such as Rome, slightly lower transmittance levels (around 0.5%) would be necessary to achieve a similar glare protection level.The study also revealed that tables E.7 and E.8 of EN17037 with pre-calculated 95-percentile Daylight Glare Probability (DGP) values should be re-calculated.
Das Gottesbild psychisch kranker Menschen
Authors: Frick Eckhard 
Published: December 2022

ZUSAMMENFASSUNGDer Begriff „Gottesbild“ hat seine Wurzeln in der biblischen Anthropologie: Der Mensch ist der ausschließliche zælæm (lebendige Statue) des Schöpfers. Folglich sind keine Idole oder physischen Gottesbilder erlaubt. Mentale Repräsentationen der Beziehung eines Individuums zu Gott, zu einer anderen transzendenten Figur oder zum Heiligen haben eine affektive, implizite, weitgehend unbewusste Komponente (oft Gottesbild genannt) und eine kognitive, explizite, propositionale Komponente (oft Gotteskonzept genannt). Das Verständnis des Gottesbildes psychisch Kranker sollte sich nicht auf die Abweichung vom vermeintlich „guten und richtigen“ Gottesbild (normativer Bias) konzentrieren, sondern vielmehr auf die wahrgenommene Diskrepanz zwischen dem persönlichen und dem normativen Gottesbild. Bei religiösen Wahnvorstellungen und anderen Psychopathologien kann das Gottesbild Teil des Problems (z. B. in Verbindung mit Wut und Angst) oder Teil der Lösung (z. B. Bewältigung durch spirituelle Erzählungen) sein. Was die religiösen, kulturellen, sozialen und psychopathologischen Normativitäten betrifft, sollte Spiritual Care eine wohlwollende Neutralität wahren und die spirituelle Suche des Patienten und seine sich entwickelnde Gottes-Imagination begleiten.
Mechanics and Energetic Analysis of Rowing with Big Blades with Randall Foils
Authors: Cardoso Ricardo , Rios Manoel , Carvalho Diogo , Monteiro Ana Sofia , Soares Susana , Abraldes J. Arturo , Gomes Beatriz B. , Vilas-Boas João Paulo , Fernandes Ricardo J. 
Published: December 2022

AbstractEmpirical observations support that the addition of a plastic strip – also known as Randall foils – on the top edge of a rowing blade improves rowing efficiency during the cycle propulsive phase. The aim of the current study was to analyze the effect of using big blades with and without Randall foils on rowing performance. Twenty experienced rowers performed two 90 s tethered rowing bouts (with and without Randall foils) to assess their impact on force production and physiologic variables. All tests were randomized and a repeated measure design was used to compare experimental conditions. Higher values of peak and mean peak forces (479.4±134.7 vs. 423.2±153.0, d=0.83 and 376.5±101.4 vs. 337.1±113.3 N, d=0.68), peak oxygen uptake (47.9±7.5 vs. 45.3±7.3 mL∙kg−1∙min−1, d=0.19), peak blood lactate concentration (7.9±1.6 vs. 6.9±1.7 mmol∙L−1, d=0.16), blood lactate increasing speed (0.08±0.01 vs. 0.07±0.06 [(mmol·L−1)·s−1], d=0.27) and lactic anaerobic energy (27.4±7.9 vs. 23.4±8.1 kJ, d=0.23) were found for big blades with vs. without Randall foils, p<0.05. The current data suggest that the Randall foils can positively affect rowing performance.
MarkeTrak and EuroTrak: What We Can Learn by Looking Beyond the U.S. Market
Authors: Powers Thomas A. , Bisgaard Nikolai 
Published: December 2022

AbstractThe MarkeTrak survey of the trends in hearing aid use, satisfaction and adoption in the United States has been conducted since 1989 by the Hearing Industries Association. It provide the hearing aid industry with valuable about the consumers view of the products and services within the industry. The EuroTrak survey is conducted by the European Hearing Instrument Manufactures Association. It is the counterpart to MarkeTrak and provides similar data for over a dozen countries in Europe, and Asia. While there are differences in the distribution models and reimbursement methods for these counties, many of the key metrics concerning hearing aid use and satisfaction can be compared.
Evaluation of Risk Scores as Predictive Tools for Stroke in Patients with Retinal Artery Occlusion: A Danish Nationwide Cohort Study
Authors: Ørskov Marie , Vorum Henrik , Larsen Torben Bjerregaard , Skjøth Flemming 
Published: December 2022

AbstractPurpose We investigated the 1-year risk of stroke in patients with retinal artery occlusion and evaluated the predictive and discriminating abilities of contemporary risk stratification models for embolic stroke.Methods This register-based cohort study included 7,906 patients with retinal artery occlusion from Danish nationwide patient registries between 1995 and 2018. The study population was stratified according to the number of points obtained in the stroke risk scores: the CHA2DS2-VASc score and the ESSEN Stroke Risk score. The 1-year risk of stroke within strata was evaluated and compared using the cox proportional hazards model. Furthermore, the discrimination of the risk scores as predictive tools for stroke risk assessment was investigated using C-statistics, Brier score, and the index of prediction accuracy.Results The stroke event rate in patients with retinal artery occlusion increased as the score increased for both risk scores, ranging from 3.62 (95% confidence interval [CI]: 2.46–5.31) per 100 person-years to 13.25 (95% CI: 11.78––14.89) per 100-person-years for increasing levels of the CHA2DS2-VASc score and from 3.97 (95% CI: 2.97–5.32) per 100 person-years to 16.43 (95% CI: 14.01–19.27) per 100 person-years for increasing levels of the ESSEN Stroke Risk score. Using a risk score of 0 as a reference, the difference was statistically significant for retinal artery occlusion patients with a CHA2DS2-VASc score of 2 or above and for all levels of the ESSEN Stroke Risk score. The C-statistics for the risk scores was 61% (95% CI: 58%–63%) and 62% (95% CI: 59–64%) for the CHA2DS2-VASc score and ESSEN Stroke Risk score, respectively.Conclusion The results suggested that the use of the CHA2DS2-VASc score and the ESSEN Stroke Risk score was applicable for risk stratification of stroke in patients with retinal artery occlusion, but discrimination was poor due to low specificity.
Insights into interactions of chlorine-based cleaning products with indoor relevant surfaces
Authors: Alves Michael R. , Deeleepojananan Cholaphan , Or Victor W. , Sit Izaac , Grassian Vicki H. 
Published: December 2022

Environmental context The chemistry that occurs in indoor environments and the role that indoor surfaces play have recently received increased attention in the scientific community. Here we have investigated the chemistry of chlorine-based cleaning products and their interactions with indoor relevant surfaces and find that these surfaces react with these cleaning products to yield surface adsorbed chlorine oxides and other surface-bound species. Rationale Indoor chemistry has recently received increased attention in the scientific community due to the fact that there is relatively little known given its unique environment including point combustion sources (candles, gas stoves, etc.) resulting in high aerosol concentrations, high surface to volume ratios and the impact of humans on indoor air quality. Recently, surface-initiated reactions during chlorine cleaning events have been proposed. Methodology In this study, we probe the interaction of bleach headspace gas with high surface area silica as a proxy for window glass – an ‘inert’ and impervious surface – using attenuated total reflectance Fourier Transform infrared (ATR-FTIR) spectroscopy, atomic force microscopy photothermal infrared (AFM-PTIR) spectroscopy and transmission electron microscopy (TEM) to observe surface chemical and physical changes. Results The results suggest chemical transformations occur at the silica surface forming surface adsorbed chlorine oxides (ClOx). Conductivity and ion chromatography methods support the presence of adsorbed chloride after surfaces have been exposed to bleach and HOCl. Discussion Interactions between HOCl and indoor surfaces have not been previously studied with molecular based techniques. The possibility of surface-mediated reactions has been relatively unexplored on indoor surfaces and this study shows the chemistry of chlorine-containing cleaning products on indoor relevant surfaces.
Transcriptional control of cone photoreceptor diversity by a thyroid hormone receptor
Authors: Aramaki Michihiko , Wu Xuefeng , Liu Hong , Liu Ye , Cho Young-Wook , Song Mina , Fu Yulong , Ng Lily , Forrest Douglas 
Published: December 2022

Cone photoreceptor diversity allows detection of wavelength information in light, the first step in color (chromatic) vision. In most mammals, cones express opsin photopigments for sensitivity to medium/long (M, “green”) or short (S, “blue”) wavelengths and are differentially arrayed over the retina. Cones appear early in retinal neurogenesis but little is understood of the subsequent control of diversity of these postmitotic neurons, because cone populations are sparse and, apart from opsins, poorly defined. It is also a challenge to distinguish potentially subtle differences between cell subtypes within a lineage. Therefore, we derived a Cre driver to isolate individual M and S opsin-enriched cones, which are distributed in counter-gradients over the mouse retina. Fine resolution transcriptome analyses identified expression gradients for groups of genes. The postnatal emergence of gradients indicated divergent differentiation of cone precursors during maturation. Using genetic tagging, we demonstrated a role for thyroid hormone receptor β2 (TRβ2) in control of gradient genes, many of which are enriched for TRβ2 binding sites and TRβ2-regulated open chromatin. Deletion of TRβ2 resulted in poorly distinguished cones regardless of retinal location. We suggest that TRβ2 controls a bipotential transcriptional state to promote cone diversity and the chromatic potential of the species.
The Euler characteristic as a topological marker for outbreaks in vector-borne disease
Authors: Barros de Souza Danillo , Figueirôa dos Santos Everlon , Santos Fernando A N 
Published: December 2022

Abstract
Epidemic outbreaks represent a significant concern for the current state of global health, particularly in Brazil, the epicentre of several vector-borne disease outbreaks and where epidemic control is still a challenge for the scientific community. Data science techniques applied to epidemics are usually made via standard statistical and modelling approaches, which do not always lead to reliable predictions, especially when the data lacks a piece of reliable surveillance information needed for precise parameter estimation. In particular, dengue outbreaks reported over the past years raise concerns for global health care, and thus novel data-driven methods are necessary to predict the emergence of outbreaks. In this work, we propose a parameter-free approach based on geometric and topological techniques, which extracts geometrical and topological invariants as opposed to statistical summaries used in established methods. Specifically, our procedure generates a time-varying network from a time-series of new epidemic cases based on synthetic time-series and real dengue data across several districts of Recife, the fourth-largest urban area in Brazil. Subsequently, we use the Euler characteristic (EC) to extract key topological invariant of the epidemic time-varying network and we finally compared the results with the effective reproduction number (R

t
) for each data set. Our results unveil a strong correlation between epidemic outbreaks and the EC. In fact, sudden changes in the EC curve preceding and/or during an epidemic period emerge as a warning sign for an outbreak in the synthetic data, the EC transitions occur close to the periods of epidemic transitions, which is also corroborated. In the real dengue data, where data is intrinsically noise, the EC seems to show a better sign-to-noise ratio once compared to R

t
. In analogy with later studies on noisy data by using EC in positron emission tomography scans, the EC estimates the number of regions with high connectivity in the epidemic network and thus has potential to be a signature of the emergence of an epidemic state. Our results open the door to the development of alternative/complementary topological and geometrical data-driven methods to characterise vector-borne disease outbreaks, specially when the conventional epidemic surveillance methods are not effective in a scenario of extreme noise and lack of robustness in the data.
Translanguaging and Educational Inequality in the Global South: Stance-taking amongst Brazilian Teachers of English
Authors: Windle Joel , Amorim Possas Luciana 
Published: December 2022

AbstractTranslanguaging has gained prominence as a pedagogical orientation that promises to promote the rights of minoritized migrant students by valuing pre-existing multilingualisms and identities. However, the effects of classroom translanguaging on teacher and student outlooks and relations of inequality are far from universal. In this paper we consider translanguaging in English language teaching in Brazil, a context in which multilingualism is often tied to social and racial closure. We show how English teachers position themselves and students in relation to translanguaging, drawing on analysis of stance-taking in online discussions. We find limited support for a transformative role played by current translingual practices, despite contributions to the establishment of affective bonds with students. We then examine a polemic over localized usages of English that casts light on how teachers do position themselves critically and opens up space for the development of critical language awareness. We argue that teacher outlooks are shaped by the changing status of English in the global south, and by unequal patterns of access to English in public, private, and commercial education settings.