bluuebunny/crossref_metadata_2025_split huggingface dataset:
An improved deadbeat predictive current control for induction motor drives
Authors: Wang Xing , Zhang Yongchang , Yang Haitao 
Published: July 2022

AbstractDeadbeat predictive current control (DPCC) has been widely studied in induction motor drives due to its simple concept, quick response and excellent steady‐state performance. However, conventional DPCC uses a lot of motor parameters to predict current and voltage. Therefore, the performance of DPCC is affected by the accuracy of motor parameters in the controller. The performance of DPCC will severely deteriorate when the motor parameters used in the controller deviate greatly from their actual values. To improve the parameter robustness of DPCC, this paper proposes a robust DPCC (RDPCC), which utilizes the error between the measured currents and predicted currents to compensate for the influence of machine parameter mismatches. The proposed method is compared with the conventional DPCC, and the experimental results confirm its strong robustness against motor parameter mismatch.
Experiment regarding magnetic fields with gravity
Authors: Lee Jong Hoon 
Published: July 2022

AbstractThis experiment was designed to test the string theory as a physical reality. The ground‐based device placed the N poles of the magnets upwards, north, south, east, and west. Coil Ass'Y was placed between 2 N poles with bearing covers on the top and bottom. Gravity interacts to generate electricity in the Earth's direction or the opposite direction by the repulsive magnetic force. The voltage was measured from 3.60 to 3.80 sequentially while the generator was stationary through the monitor. The author found symmetry in Lex Tertia voltage and current zero data during experiment F4 6380 at a balanced state under gravity with the repulsive magnetic force. It generated from 42.8 to 794 μV in the vacuum chamber but from negative 16.1 to positive 18.3 μV in the air. As a result, the author measured more negative current and positive voltage generated in a vacuum. Trapped gravity was set to behave as free relativistic quantum particles or fluids in the magnetic sea. The result made it accessible to study the magnetic sea for different initial superpositions of positive‐ and negative‐gravity spinor states. This might explain the relativistic quantum gravity exists as a physical reality, graviton interacting with photons to induce a magnetic field.
Review on islanding detection methods for grid‐connected photovoltaic systems, existing limitations and future insights
Authors: Bakhshi‐Jafarabadi Reza , Sadeh Javad , Serrano‐Fontova Alexandre , Rakhshani Elyas 
Published: July 2022

AbstractThe connection of renewable energy sources (RESs) to the distribution network has been rising at a steady pace over the past decades. The great penetration of RESs such as grid‐connected photovoltaic system brings new technical challenges to the distribution networks such as unintentional islanding. Conceptually, this situation occurs when a portion of the network that has been isolated from the main grid remains energised by the embedded RESs. This unexpected scenario should be thereby identified effectively to avoid frequency and voltage deviations and their hazardous effects. The aim of this paper is to provide a comprehensive review on the recently developed islanding detection methods for grid‐following/grid‐connected photovoltaic system, analyse their existing limitations, and suggest possible future research implementations. In this context, an in‐depth comparison is provided considering the main features used in islanding detection methods such as non‐detection zone, detection time, implementation cost and complexity, and power quality degradation. Finally, the main technical requirements established by the current grid codes are recalled identifying potential multi‐functional approaches to expand the current islanding detection capabilities.
Schwerpunkt Ophthalmopathologie Orbitainfektion: vom Hordeolum bis zur nekrotisierenden Fasziitis
Authors: Weller Julia M. , Messmer Elisabeth 
Published: July 2022

Zusammenfassung(Peri)orbitale Infektionen umfassen ein weites Spektrum vom klinisch häufigen Hordeolum bis zur seltenen, aber bedrohlichen nekrotisierenden Fasziitis. Im ophthalmopathologischen Labor
machen diese Entitäten dennoch einen relativ kleinen Anteil der Diagnosen aus, was vor allem daran liegt, dass (peri)orbitale Infektionen i. d. R. klinisch – ggf. mit Unterstützung der
Radiologie und Mikrobiologie – diagnostiziert werden. In dieser Arbeit wird exemplarisch an einigen Diagnosen die Rolle der ophthalmopathologischen Diagnostik bei (peri)orbitalen Infektionen
aufgezeigt. Das infektiöse Hordeolum sollte vom nicht infektiösen Chalazion differenziert werden. Hinter einer nodulären Lidverdickung, die als Chalazion eingeordnet und behandelt wird, kann
sich eine maligne Neoplasie verbergen. Die Kanalikulitis wird klinisch häufig erst verzögert korrekt diagnostiziert und behandelt. Histologisch können hier sowohl der Erreger Actinomyces als
auch Dakryolithen dargestellt werden. Die nekrotisierende Fasziitis ist eine fulminant verlaufende Infektion der Faszien und kann zu Nekrosen und reduziertem Allgemeinzustand bis hin zu
Sepsis und Tod führen. Im Rahmen der SARS-CoV-2-Pandemie kam es vor allem in Indien gehäuft zu Mukormykose-Fällen. Diese Superinfektion wird durch Immunsuppression und Steroideinsatz
begünstigt. Histologisch ist die Mukormykose durch eine Infiltration der Gefäßwände durch die Schimmelpilze gekennzeichnet. Die Ophthalmopathologie kann zur Diagnostik und dem Verständnis
der zugrunde liegenden Pathophysiologie dieser Erkrankungen beitragen.
Zur klinisch-pathologischen Korrelation der mikrobiellen Keratitis und darüber hinaus: Gibt es eine korneale Sepsis?
Authors: Nissen Ebba J. , Saeger Mark , Nölle Bernhard , Roider Johann 
Published: July 2022

ZusammenfassungMikrobielle, infektiöse, Keratitiden bedingen relevant die Indikation von perforierenden Keratoplastiken. Durch eine akute transplantationsbedürftige Situation ergibt sich eine
histopathologische Untersuchung der gesamten Korneadicke. Wenn auch die klinische Diagnose einer infektiösen Keratitis dabei nicht immer zu belegen ist, kann in der Pathologie sehr zur
diagnostischen Klärung des klinischen Befundes und der Pathogenese beigetragen werden. Dies gelingt mit dem Einsatz vielfältiger Methoden aus Zytologie, Histochemie, Immunhistologie,
Molekularpathologie und selten eingesetzter Elektronenmikroskopie, wodurch es möglich ist, geweblich manifestierte Vor- und Begleiterkrankungen nachzuweisen und die infrage kommenden Erreger
anzugeben. Lässt sich eine klinisch-pathologische Korrelation für die Korneaschädigung nicht zufriedenstellend erbringen, stellt sich die Frage, ob ein mutmaßlicher Erreger final gar nicht
dafür verantwortlich gewesen ist. Die Pathogenese einer transplantationsbedürftigen Keratitis ist auch experimentell am Menschen bisher nicht vollständig entschlüsselt. Die Entwicklung einer
derartigen Keratitis kann zu einer klinischen Symptomatik führen, die auch als „bedrohliche Organdysfunktion“ beschrieben wird, ein Begriff aus der Sepsisforschung. Unter Berücksichtigung
aktueller Literatur werden mögliche Übereinstimmungen zwischen Sepsis und mikrobieller Keratitis und ihr Bezug zur Histopathologie diskutiert.
Merkel-Zell-Karzinome des Oberlides mit ungewöhnlichem klinischem Erscheinungsbild
Authors: Roschinski Benjamin , Werner Martin , Mittelviefhaus Hans , Auw-Hädrich Claudia 
Published: July 2022

ZusammenfassungDas Merkel-Zell-Karzinom (MZK) ist ein seltener, aggressiver neuroendokriner Hauttumor, der vor allem in der sonnenexponierten Kopf-Hals-Region, jedoch kaum im Lidbereich auftritt. Die
frühe lymphogene Ausbreitung führt häufig zu lokoregionalen Metastasen, weswegen eine frühe Diagnosestellung entscheidend ist. Klassischerweise stellt sich ein periokuläres MZK als
rötlich-livider Knoten bei älteren Patienten dar, eine Blickdiagnose. In Anbetracht der geringen Inzidenz und des variablen Erscheinungsbildes kann die Diagnose jedoch auch eine
Herausforderung darstellen. In den beiden hier vorgestellten Fällen präsentierte sich das MZK als eine hautfarbene Schwellung. Bei Patientin 1 zeigte der Tumor eine teils tiefe
subaponeurotische Lokalisation und täuschte histopathologisch ein B-Zell-Lymphom vor, während er bei Patient 2 klinisch ein diffuses Chalazion imitierte. Nach immunhistochemischer
Charakterisierung und Ausschluss von Metastasen wurden die initial klinisch benigne erscheinenden Veränderungen beider Patienten als CK20-negatives MZK klassifiziert. Die ausgedehnten
Oberliddefekte wurden durch eine Cutler-Beard-Plastik gedeckt, bei Patientin 1 angesichts der Oculus-unicus-Situation eine besondere Herausforderung. Unsere beiden Fälle zeigen, dass
Merkel-Zell-Karzinome sich nicht nur als tiefrote kirschförmige Tumoren manifestieren, sondern bei atypischer Lage bzw. Infiltrationsform hautfarben erscheinen und benigne Veränderungen
vortäuschen können.
Kognitive Interventionen bei der Alzheimer-Krankheit
Authors: Frimmer Daniela , Buerger Katharina 
Published: July 2022

ZusammenfassungIn der Behandlung der Alzheimer-Krankheit sind kognitive Interventionen ein
wichtiger Baustein. Als Teil der nicht-pharmakologischen
Behandlungsmöglichkeiten sind dabei vielfältig und je nach
Patient individuell. Mit diesem Beitrag sollen die einzelnen Konzepte kognitiver
Interventionen und deren theoretische Grundlagen dargestellt werden. Zudem wird
die aktuelle Studienlage mit Blick auf die Anwendung bei der Alzheimer-Krankheit
im Stadium der leichten kognitiven Störung (LKS) und der Demenz
zusammengefasst, wobei auch neuere Entwicklungen im Rahmen
computergestützter Verfahren Beachtung finden. Die spezifischen
Wirkfaktoren und klinischen Anwendungsmöglichkeiten kognitiver
Interventionsmöglichkeiten werden diskutiert.
Der Bindungsstil der Mutter und ihr perinatales Wohlbefinden
beeinflussen die frühkindliche Entwicklung
Authors: Goecke Tamme W. , Schöberl Gudrun I. , Beckmann Matthias W. , Beetz Andrea M. 
Published: July 2022

ZusammenfassungImmer mehr Kinder zeigen bereits in der frühen Kindheit Anzeichen von
Verhaltensauffälligkeiten und Dysregulationen. Es wird ein Einfluss der
pränatalen Bindung der Schwangeren zu ihrem ungeborenen Kind sowie ihres
peripartalen Wohlbefindens angenommen. In einer prospektiven Studie an 161
Erstgebärenden wurde über standardisierte Fragebögen im
dritten Trimenon und 3 Wochen, 6 Monate und 18 Monate postpartum die
pränatale Bindung der Mutter zum Kind, den maternalen Bindungsstil, die
Bindung in der Paarbeziehung und die prä- und postpartale
Depressivität, sowie Entwicklungsauffälligkeiten des Kindes im
Alter von 18 Monaten erfasst. Im allgemeinen linearen Modell (ALM) waren eine
länger vorliegende prä- und postpartale Depressivität
der Mutter sowie Anzeichen einer unsicheren pränatalen Bindung zum Kind
mit einer höheren Rate an kindlichen Verhaltensauffälligkeiten
assoziiert. Die Befunde untermauern die Bedeutung der frühzeitigen
Wahrnehmung von Depressivität bei Frauen während und nach der
Schwangerschaft durch medizinische Fachkräfte und der Einleitung von
entsprechenden Hilfen, um die Häufigkeit kindlicher
Verhaltensauffälligkeiten zu reduzieren.
Impact of the European Society of Gastrointestinal Endoscopy 2020 guidelines on the number of scheduled post-polypectomy surveillance colonoscopies
Authors: Bustamante-Balén Marco , García-Campos Maria , Lorenzo-Zúñiga Vicente , Alonso-Lázaro Noelia , Sanchez-Montes Cristina , Argüello-Viudez Lidia , Pons-Beltrán Vicente 
Published: July 2022

Abstract
Background and study aims In contrast with the European Society of Gastrointestinal Endoscopy (ESGE) 2013 and the US Multi-society Task Force (USMSTF) 2020 guidelines, the ESGE 2020 guideline considers patients with three to four adenomas < 10 mm or an adenoma with villous histology as low risk. The aim of this study was to quantify the influence of the application of the new ESGE 2020 guidelines, as opposed to the ESGE 2013 and USMSTF 2020 guidelines, on the number of scheduled colonoscopies, and to describe the main causes for changes in the surveillance intervals.
Patients and methods A retrospective evaluation was conducted of a prospectively maintained fecal immunochemical test (FIT)-based regional colorectal cancer screening program database. Surveillance regimens following ESGE 2020, ESGE 2013, and USMSTF 2020 guidelines were compared.
Results Overall, 1284 individuals with a positive FIT and undergoing colonoscopy were consecutively included. When applying the ESGE 2020 guidelines, 10.8 % of patients changed to a “no-surveillance” group (relative reduction in colonoscopies of 82.5 %). The main reason for these changes was considering three to four adenomas as low risk. The proportion of patients from the “3-year surveillance” group who moved to the “no-surveillance” group was lower when a sessile serrated lesion (SSL) was present (ESGE 2013, 32.0% vs 16.3 %; USMSTF 2020 17.2 % vs 6.8 %). Analyzing the 41 patients with SSLs who remained unchanged in the “no-surveillance” group, only in 15 (36.6 %) the cause was the presence of an SSL.
Conclusions applying the new ESGE 2020 guidelines could reduce by 11 % the proportion of individuals being offered surveillance. SLLs have not a major influence on the change of surveillance intervals.
The Rationale for Economic Evaluation in Speech and Language: Cost, Effectiveness, and Cost-effectiveness
Authors: Hoch Jeffrey S. , Smith Bridgette P. , Kim Jiyeong , Dewa Carolyn S. 
Published: July 2022

AbstractEconomic evaluation studies the costs and outcomes of two or more alternative activities to estimate the relative efficiency of each course of action. Economic evaluation is both important and necessary in the management of speech and language issues. Economic evaluation can help focus attention on interventions that provide value for improving population health. The purpose of this article is to introduce readers to fundamental economic concepts. Readers are also introduced to common issues when conducting economic evaluations and how to address them in practice.
Analyzing a Cost-Effectiveness Dataset: A Speech and Language Example for Clinicians
Authors: Hoch Jeffrey S. , Haynes Sarah C. , Hearney Shannon M. , Dewa Carolyn S. 
Published: July 2022

AbstractCost-effectiveness analysis, the most common type of economic evaluation, estimates a new option's additional outcome in relation to its extra costs. This is crucial to study within the clinical setting because funding for new treatments and interventions is often linked to whether there is evidence showing they are a good use of resources. This article describes how to analyze a cost-effectiveness dataset using the framework of a net benefit regression. The process of creating estimates and characterizing uncertainty is demonstrated using a hypothetical dataset. The results are explained and illustrated using graphs commonly employed in cost-effectiveness analyses. We conclude with a call to action for researchers to do more person-level cost-effectiveness analysis to produce evidence of the value of new treatments and interventions. Researchers can utilize cost-effectiveness analysis to compare new and existing treatment mechanisms.
Superimposing neuromuscular electrical stimulation onto voluntary contractions to improve muscle strength and mass: A systematic review
Authors: Borzuola Riccardo , Laudani Luca , Labanca Luciana , Macaluso Andrea 
Published: July 2022

ABSTRACTTraining and rehabilitation programmes involving neuromuscular electrical stimulation superimposed onto voluntary contractions (NMES+) have gained popularity in the last decades. Yet, there is no clear consensus on the effectiveness of such intervention. The aim of this review was to evaluate the effect of chronic exposure to NMES+ on muscle strength and mass compared to conventional volitional training or passive electrical stimulation alone. Two authors conducted an electronic search to identify randomized controlled trials that investigated the effect of NMES+ training, involved healthy participants or orthopaedic patients, detailed a well‐defined NMES training protocol, and provided outcomes related to muscle strength and/or mass. The authors extracted data on participants, intervention characteristics, muscle‐related outcomes, and assessed the methodological quality of the studies. A total of twenty‐four studies were included in the review. The majority of these reported an increase in muscle strength following NMES+ training compared to an equivalent voluntary or passive NMES training. The highest improvements were found when NMES was superimposed on sub‐maximal exercises involving both concentric and eccentric contractions. Two studies reported an increase in muscle mass after NMES+, while two other studies exhibited no differences. This review indicated that chronic exposure to NMES+ determines muscle strength improvements greater or equal compared to volitional training alone. However, differences in the methodological characteristics of the stimulation and the type of exercise associated with NMES+ revealed significant discrepancies in the results. A deeper understanding of the neurophysiological adaptations to NMES+ is crucial to fully explain the muscle‐related enhancement resulting from such intervention.
Interaction of graphene with Au
n
clusters: a first-principles study
Authors: Murugesan Ramasamy , Meng Ruishen , de Volder Alexander , Keijers Wout , Janssens Ewald , van de Vondel Joris , Afanasiev Valeri , Houssa Michel 
Published: July 2022

Abstract
The interaction between Au
n
(n = 1–6) clusters and graphene is studied using first-principles simulations, based on density functional theory. The computed binding energy between Au
n
and graphene depends on the number of atoms in the cluster and lies between −0.6 eV and −1.7 eV, suggesting (weak) chemisorption of the clusters on graphene, rather than physisorption. Overall, the electronic properties, spin–orbit interaction and spin texture, as well as the transport properties of graphene strongly depend on the precise size of the Au
n
clusters. Doping of graphene is predicted for clusters with an odd number of Au atoms, due to overlap between Au s and carbon pz
states close to the Fermi level. On the other hand, there is no charge transfer between even size Au clusters and graphene, but a gap is formed at the Dirac cone, due to the breaking of the pseudo spin inversion symmetry of graphene’s lattice. The adsorbed Au
n
clusters induce spin–orbit interactions as well as spin and pseudo spin interactions in graphene, as indicated by the splitting of the electronic band structure. A hedgehog spin texture is also predicted for adsorbed clusters with an even number of Au atoms. Ballistic transport simulations are performed to study the influence of the adsorbed clusters on graphene’s electronic transport properties. The influence of the cluster on the electron transmission across the structure depends on the mixing of the valence orbitals in the transport energy window. In the specific case of the Au3/graphene system, the adsorbed clusters reduce the transmission and the conductance of graphene. The Au3 clusters act as ‘scattering centers’ for charge carriers, in agreement with recent experimental studies.
Investigation of the temperature phase diagram of the 2D semi-classical ferrimagnetic

J1−J2

model
Authors: Wieser R 
Published: July 2022

Abstract
The temperature phase diagram (T over J
2) of the 2D semiclassical

J
1

−

J
2

Heisenberg model is discussed. The investigation was carried out using the self-consistent Bloch equation and a quantum statistical description of the magnetization. In addition to the three states of the zero-temperature phase diagram, the

J
2

−
T

phase diagram shows two new phases, the paramagnetic phase and the semi-paramagnetic

S
1

-Néel state. The five occurring ground states, as well as the transitions between these states, are discussed. In particular, attention is paid to the interplay between temperature and frustration.
Strong paramagnetic response in the superconducting state of Y-containing V0.6Ti0.4 alloys
Authors: Ramjan SK , Sharath Chandra L S , Singh Rashmi , Chattopadhyay M K 
Published: July 2022

Abstract
We report systematic field-cooled (FC) magnetisation of superconducting (V0.6Ti0.4)–Y alloys in the presence of applied magnetic fields up to 7 T. A paramagnetic response is clearly observed just below the superconducting transition temperature (

T

c

) in low fields (

⩽
0.2

T). The lower

T

c

of the Y-rich precipitates, when compared to the bulk, is the origin of flux compression that leads to this paramagnetic response in low fields. It is also observed that the magnetisation obtained during the FC cooling cycle is lower than that of FC warming for the (V0.6Ti0.4)–Y alloys in fields higher than 0.02 T. Moreover, paramagnetic relaxation of the FC moment is also observed in this system. We infer that these features of the Y-containing alloys are related to the high-field paramagnetic Meissner effect (HFPME). Our analysis shows that the large difference in pinning strength of the different pinning centres, generated due to Y addition in the V0.6Ti0.4 alloys, is responsible for the HFPME. We find additional evidence of our claim in the form of an extension of the range of the temperature and magnetic fields over which the HFPME is observed, when the samples are subjected to cold work. The observation of the HFPME up to 7 T has not been reported until now in any low

T

c

superconductor, and only a very few high

T

c

superconductors show the HFPME upto such high fields.
A combined regional Geopotential Model using optimized global Gravity Field Solutions
Authors: Nyoka C J , Din A H M , Pa’suya M F , Omar A H 
Published: July 2022

Abstract
To develop a gravimetric geoid, a Global Geopotential Model (GGM) is required to minimise the truncation error arising from using the Stokes integral with a limited number of gravity data points. The choice of a best-fitting GGM determines the accuracy of a gravimetric geoid solution. Selecting a suitable GGM is a rigorous process, requiring both internal and external evaluation of all GGMs available at the International Center for Globa Earth Models (ICGEM). Moreover, GGMs perform differently depending on the wavelength, and it is difficult to obtain a GGM that performs best across the full harmonic spectrum. In this study, a combined GGM is developed from a selection of the most recent and high-resolution GGMs covering Peninsular Malaysia. The selected models are first synthesized harmonically to obtain geoid undulations at collocated GNSS-levelled points, and free air anomalies at randomly sampled points across the study area. These quantities are compared with the observed geoid undulations and point gravity anomalies interpolated from a grid of free air anomalies. The best performing GGMs are then used to produce a combined GGM, by selecting the spherical harmonic coefficients with the best characteristics for every degree. The signal and error spectra of the new GGM are compared with the selected geopotential models. The combined GGM produced a higher cumulative signal to noise ratio (SNR) of 4402.669 compared to all the selected GGMs, with XGM2016 and Eigen-6C following suit with SNR of 4139.561 and 4092.462, respectively. Besides, the new combined GGM performed better across the whole harmonic spectrum than all selected GGMs. The use of combined GGMs in geoid modelling, instead of a single GGM may be more desirable because they can improve the quality of results.