bluuebunny/crossref_metadata_2025_split huggingface dataset:
Krisenmanager oder Übergangshelfer?
Authors: Windscheid Eike 
Published: November 2021

Zusammenfassung
Kehren Beschäftigte nach Abwesenheit an ihren Arbeitsplatz zurück, stellt dies oft einen krisenhaften Vorgang dar. Der Weg zurück ist nicht nur kritisch für Betroffene; auch die Arbeitsorganisation vor Ort wird irritiert. Vorgesetzte sind dann gefordert, Auswirkungen zu managen. Da Rückkehrvorgänge nicht immer abschließend betrieblich geregelt sind, ergeben sich Unbestimmtheitszonen, die Führungskräfte füllen müssen. Am Beispiel der betrieblichen Wiedereingliederung nach psychischer Erkrankung wird untersucht, wie Führungskräfte in diesen Unbestimmtheitszonen wirken und welchen Einfluss sie auf die Wiedereingliederung nehmen. Auf Basis von problemzentrierten Interviews mit Führungskräften wird gezeigt, dass sie als Gatekeeper fungieren und sich in einem Spannungsfeld zwischen ökonomischen und sozialen Ansprüchen bewegen. Ob Vorgesetzte stärker als Übergangshelfende für eine gelingende Reintegration sorgen oder sich als arbeitsökonomisch orientierte Krisenmanager erweisen, ist abhängig von organisationalen Rahmenbedingungen und individuellen Einstellungen.
Diversität oder Diskriminierung im Management?
Authors: Vries Lisa de 
Published: November 2021

Zusammenfassung
Dieser Beitrag liefert einen Einblick in die bislang wenig untersuchte Arbeitsmarktsituation von lesbischen, schwulen und bisexuellen Führungskräften. Basierend auf Daten des Sozio-oekonomischen Panels (SOEP) wird zunächst mittels deskriptiver Verteilungen (nach Branche, Unternehmensgröße und Arbeitszeit) die Arbeitsmarktsituation von Führungskräften nach sexueller Orientierung und Geschlecht betrachtet. Zusätzlich werden die Daten einer Online-Befragung (LGBielefeld 2019) mit 571 lesbischen, schwulen und bisexuellen Führungskräften verwendet, um Diskriminierung, Outing, emotionales Wohlbefinden und Lebenszufriedenheit dieser Führungskräfte zu untersuchen. Die Ergebnisse zeigen zum einen, dass lesbische, schwule und bisexuelle Führungskräfte von Diskriminierung im Arbeitsleben betroffen sind und nicht immer offen über ihre sexuelle Orientierung am Arbeitsplatz sprechen (können). Zum anderen haben Diskriminierung im Arbeitsleben und der Umgang mit der sexuellen Orientierung am Arbeitsplatz einen Effekt auf die Lebenszufriedenheit und einzelne Dimensionen des emotionalen Wohlbefindens.
Prognose von Schaltzeiten verkehrsabhängiger Lichtsignalanlagen in Deutschland – Herausforderungen und Ansätze
Authors: Hoyer Robert , Schneegans Lena Elisa 
Published: November 2021

Zusammenfassung
Zukünftige Fahrerassistenzsysteme sollen situationsgerechte Hinweise zum energie- und emissionssparenden Fahren geben. Hierfür benötigen sie eine Vorausschau auf das Schaltverhalten von Lichtsignalanlagen (LSA). Im Gegensatz zu Festzeitsteuerungen ist diese Aufgabe bei verkehrsabhängigen Steuerungen nicht einfach zu lösen. Durch die Echtzeitanalyse von LSA-Prozessdaten soll auf das zukünftige Schaltverhalten geschlossen werden. Bisherige Verfahren zur Schaltzeitprognose nutzen hauptsächlich statistische Ansätze, welche allerdings nicht unter allen Randbedingungen erfolgreich sind. Daher rücken zunehmend auch KI-basierte Methoden in den Fokus. Der Beitrag gibt hierzu einen Überblick und leitet den zukünftigen Forschungsbedarf ab.
History of positron emission tomography (PET) in Poland
Authors: Cegła Paulina , Piotrowski Tomasz 
Published: November 2021

Abstract
In this short chronological review, we showed the development of positron emission tomography (PET) starting from research on first isotopes through the concepts and prototype of PET machine to the current clinical practice and technological and clinical research. Particular emphasis was placed on a clear description of the milestones of PET development in Poland.
High-resolution capillary electrophoresis for the determination of carbamylated albumin
Authors: Favresse Julien , Delanghe Joris 
Published: November 2021

Abstract

Objectives
Carbamylation is a non-enzymatic post-translational reaction of a primary amino group of a protein with isocyanate. The albumin carbamylation is a negative prognostic factor in chronic kidney disease (CKD) patients and induce charge difference implying an observed shift in electrophoretic mobility that can be measured through a symmetry factor (SF).

Methods
The Helena V8 and the Sebia Capillarys 2 systems were used for all experiments. The effect of in vitro carbamylation on the SF by spiking increasing concentrations of potassium isocyanate (KCNO) in serum of three healthy volunteers was investigated. Theoretical plate numbers (N) as a surrogate of separation efficiency were also calculated and correlations between SF and renal function biomarkers were performed on 284 patients.

Results
A dose-dependent impact of KCNO on the SF was observed for both methods with the Helena V8 being more sensitive. The mean N was significantly higher on the Helena V8 as compared to the Sebia Capillarys 2 (2,972 vs. 444.1, p<0.0001). The SF correlated significantly with eGFR (r=0.50, p<0.0001), creatinine (r=−0.31, p<0.0001) and urea (r=−0.34, p<0.0001) on the Helena V8. On the Sebia Capillarys 2, a significant correlation was only observed with eGFR (r=0.17, p=0.004). A better discrimination between CKD stages was also observed using the Helena V8.

Conclusions
Thanks to a higher mean N, the Helena V8 might offer new possibilities, including detection of carbamylated albumin through SF calculation. Further studies are still needed to confirm the interest of using this type of assays in clinical routine.
Application of generalized equations of finite difference method to computation of bent isotropic stretched and/or compressed plates of variable stiffness under elastic foundation
Authors: Youssoufa Seydou , Sali Moussa , Njifenjou Abdou , Joseph Nkongho Anyi , Valery Ngayihi Abbe Claude 
Published: November 2021

Abstract
The computation of bent isotropic plates, stretched and/or compressed, is a topic widely explored in the literature from both experimental and numerical point of view. We expose in this work an application of the generalized equations of Finite difference method to that topic. The strength of the proposed method is the ability to reconstruct the approximate solution with respect of eventual discontinuities involved in the investigated function as well as its first and second derivatives, including the right-hand side of the equilibrium equation. It is worth mentioning that by opposition to finite element methods our method needs neither fictitious points nor a special condensation of grid. Well-known benchmarks are used in this work to illustrate the efficiency of our numerical and the high accuracy of calculation as well. A comparison of our results with those available in the literature also shows good agreement.
Conformable differential operators for meromorphically multivalent functions
Authors: Ibrahim Rabha W. , Baleanu Dumitru , Jahangiri Jay M. 
Published: November 2021

Abstract
We define a conformable diff-integral operator for a class of meromorphically multivalent functions. We show that this conformable operator adheres to the semigroup property. We then use the subordination properties to prove inclusion conditions, sufficienrt inclusion conditions and convolution properties for this class of conformable operators.
A prediction method for water enrichment in aquifer based on GIS and coupled AHP–entropy model
Authors: Duan Huijun , Hao Shijun , Feng Jie , Wang Yi , Peng Dong 
Published: November 2021

Abstract
To prevent coal mine water disasters, the main objective of this study is to predict the water enrichment of the main aquifer in a coal mine of China that has been threatened by water inrush. The prediction is carried out using a geographic information system (GIS) and a coupled analytic hierarchy process (AHP) and entropy model. The flushing fluid consumption, burnt rock distribution, sand–shale ratio, and lithology structure index were determined as the main factors controlling the water enrichment of the aquifer. A thematic map of these main factors was constructed using the spatial data analysis functions of GIS and the data from a total of 146 drilling columns and field investigation. The weights of these controlling factors were calculated using the coupled model. A prediction map of the water enrichment of the aquifer was then developed by overlaying the thematic map with the weights of each controlling factor. The degree of water enrichment was finally divided into four levels for easy interpretation, where Level I denotes the highest water enrichment and poses the greatest threat of water disaster.
Critical points approaches to a nonlocal elliptic problem driven by 𝑝(𝑥)-biharmonic operator
Authors: Heidarkhani Shapour , Moradi Shahin , Avci Mustafa 
Published: November 2021

Abstract
Differential equations with variable exponent arise from the nonlinear elasticity theory and the theory of electrorheological fluids.
We study the existence of at least three weak solutions for the nonlocal elliptic problems driven by

p
⁢

(
x
)

p(x)

-biharmonic operator.
Our technical approach is based on variational methods.
Some applications illustrate the obtained results.
We also provide an example in order to illustrate our main abstract results.
We extend and improve some recent results.
The effect of V on the morphology of TiB2 particles in as-cast aluminum composites
Authors: Sun Jing , Wang Fei , Liu Yuwen , Guo Lijie , Wang Haowei 
Published: November 2021

Abstract
This study presents the modification effect of trace vanadium on the in-situ formed TiB2 particles in as-cast aluminum composites. With 0.2 wt.% V addition the morphology of TiB2 was modified from hexagonal platelet or irregular feather-like shape to hexagonal prism or rectangular prism with parallel growth steps along the c-axis. Meanwhile, V rich cores were detected in the center of TiB2 and the exposure of the high-index crystal plane (1101)TiB2 was detected in Al-0.2 wt.%V. Statistical analysis of the particle size and aspect distribution both in commercial Al and Al-0.2 wt.%V was conducted. The elemental distribution and scanning electron microscopy investigation revealed that VB2 may serve as the 2D-nucleus of TiB2 particles. The growth mechanism of TiB2 under the influence of V was explored.
Die Entwicklung des „Steuerstaates“: Ursprung, Aufstieg und Ende eines finanzwirtschaftlichen Fortschrittsparadigmas
Authors: Leipold Alexander , Huhnholz Sebastian 
Published: November 2021

Abstract
For decades, the Schumpeterian tax state was considered the central paradigm of Fiscal Sociology. However, it increasingly fails to meet many of the conceptual challenges of contemporary public finance. To demonstrate this, the paper undertakes a double re-contextualization of the discourse on public finance. Its development is traced back to evolutionary thinking, which Joseph Schumpeter updated around 1918. However, and following the rise of democratic capitalism after 1945, thinking about the tax state became intertwined with economic control. Its socio-political specifics were marginalized. Since the Great Recession of 2008/2009 and widening fiscal crises in advanced capitalist economies, this discursive narrowing has again become the subject of political and economic controversies.
Bound states in the continuum in resonant nanostructures: an overview of engineered materials for tailored applications
Authors: Joseph Shereena , Pandey Saurabh , Sarkar Swagato , Joseph Joby 
Published: November 2021

Abstract
From theoretical model to experimental realization, the bound state in the continuum (BIC) is an emerging area of research interest in the last decade. In the initial years, well-established theoretical frameworks explained the underlying physics for optical BIC modes excited in various symmetrical configurations. Eventually, in the last couple of years, optical-BICs were exploited as a promising tool for experimental realization with advanced nanofabrication techniques for numerous breakthrough applications. Here, we present a review of the evolution of BIC modes in various symmetry and functioning mediums along with their application. More specifically, depending upon the nature of the interacting medium, the excitations of BIC modes are classified into the pure dielectric and lossy plasmonic BICs. The dielectric constituents are again classified as photonic crystal functioning in the subwavelength regime, influenced by the diffraction modes and metasurfaces for interactions far from the diffraction regime. More importantly, engineered functional materials evolved with the pure dielectric medium are explored for hybrid-quasi-BIC modes with huge-quality factors, exhibiting a promising approach to trigger the nanoscale phenomena more efficiently. Similarly, hybrid modes instigated by the photonic and plasmonic constituents can replace the high dissipative losses of metallic components, sustaining the high localization of field and high figure of merit. Further, the discussions are based on the applications of the localized BIC modes and high-quality quasi-BIC resonance traits in the nonlinear harmonic generation, refractometric sensing, imaging, lasing, nanocavities, low loss on-chip communication, and as a photodetector. The topology-controlled beam steering and, chiral sensing has also been briefly discussed.
The crystal structure of N
6,N
6′-di(pyridin-2-yl)-[2,2′-bipyridine]-6,6′-diamine, C20H16N6
Authors: Sun Yue , Yang Tianyu , Wang Wenxiang 
Published: November 2021

Abstract
C20H16N6, monoclinic, P21/c (no. 14), a = 7.6623(4) Å, b = 11.8206(5) Å, c = 8.8960(4) Å, β = 91.825(2)°,V = 805.33(7) Å3, Z = 2, R

gt
(F) = 0.0577, wR
ref(F
2) = 0.1588, T = 200(2) K.
The Loom Weight, the Spindle Whorl, and the Sword Beater – Evidence of Textile Activity in the Early Neolithic?
Authors: Cheval Carole 
Published: November 2021

AbstractAfter the development of an experimental protocol concerning an enigmatic tool rarely recognized archaeologically and potentially used as a sword beater, that is, blades in bone or wood, we were able to establish certain diagnostic criteria. These tools recur in sites in the south of France and Italy, for example, dated to 3023 BC. If our experimental reference work is extended, we may be able to determine which fibers were used for textile production during the Neolithic. This could reveal a virtually unknown field in the prehistoric economy and shed light upon the procurement and the use of plant and animal resources developed by populations living in a period when domestication was just beginning.
Mechanical behaviour of precast prestressed reinforced concrete beam–column joints in elevated station platforms subjected to vertical cyclic loading
Authors: Shi Haiou , Zhao Jinxia , Chen Fangmu , Lin Junjin , Xie Jianhe 
Published: November 2021

Abstract
Precast-reinforced concrete (RC) structures in urban rail transit projects can provide many advantages over their cast-in-place counterparts. However, lessons learned from past earthquakes show that beam-column joints may be a critical point of these structures and can overestimate the mechanical performance under vertical seismic loadings if not properly understood. This paper presents unbonded and bonded prestressed precast RC beam-column joints for elevated station platforms. Prestressed steel strands are used to provide joints with self-centring capacity. The performance of the proposed joints under vertical cyclic loadings is experimentally investigated and compared to that of monolithic joints in this study. The obtained results demonstrate the good properties of the proposed precast joints in terms of bearing capacity, energy dissipation capacity and ductility control. A comparison with a conventional monolithic beam-column joint indicates the better performance against earthquakes of the proposed precast prestressed joints, and the precast joint with symmetric prestressed steel strands in the top and bottom of the beam exhibits better flexural stiffness and energy dissipation capacity.
Thermophysikalische Charakterisierung von Wärmedämmschichten
Authors: Knopp Kevin , Shandy Amir , Winterstein Achim , Arduini Mariacarla , Hemberger Frank , Vidi Stephan , Manara Jochen , Müller Michael , Hartmann Jürgen 
Published: November 2021

Zusammenfassung
Die Effizienzsteigerung moderner Gasturbinen erfordert die stetige Anhebung der Betriebstemperatur. Die derzeitigen Brenngastemperaturen liegen mit über 1400 °C signifikant über der kritischen Temperatur der verwendeten Turbinenstähle. Zur Gewährleistung der Betriebssicherheit werden die Turbinenschaufeln neben Aktivkühlung durch Beschichtung mit thermischen Schutzschichten, sogenannten thermal barrier coatings (TBC), geschützt. Da es sich bei den TBC um Keramikschichten handelt, ist für die Erhöhung der Haftfestigkeit das Aufbringen eines Haftvermittlers (Verbindungsschicht) notwendig. Da die Eigenschaften dünner Schichten stark von den Eigenschaften des Bulkmaterials abweichen können und zudem von der Herstellungsmethode beeinflusst werden, ist eine Untersuchung der thermischen und infrarot-optischen Eigenschaften der tatsächlichen Schichtstrukturen unumgänglich, insbesondere im Hochtemperaturbereich. Hierfür wurden Proben des reinen Trägerstahls, des Trägerstahls mit Haftvermittlerschicht und des kompletten Schichtsystems aus Trägerstahl, Haftvermittlerschicht und Wärmedämmschicht verschiedener Dicken hergestellt und mittels Laser-Flash-Methode untersucht. Die Auswertung erfolgte dabei analytisch, ausgehend von der Trägerstahl-Einschichtprobe, über die Zweischicht- und Dreischichtsysteme. Vervollständigt wurden diese Untersuchungen durch infrarot-optische Charakterisierungen, mit denen sich die Wärmeausbreitung durch die Schichtsysteme beschreiben lässt. Zusammen mit den Laser-Flash Messungen erlaubt dies eine spätere Quantifizierung der einzelnen, bei Keramiken auftretenden, Wärmetransportmechanismen.
Basal ganglia infarction and COVID-19 infection in an elderly patient: A case report
Authors: Kamal Manar Ahmed 
Published: November 2021

Abstract

Background
Coronavirus disease 2019 (COVID-19) has spread rapidly worldwide since the first cases were observed in Wuhan, China. Patients with COVID-19 develop multiple neurological symptoms, including headache, disturbed consciousness, and paresthesia, in addition to systemic and respiratory symptoms.

Case presentation
We presented a 57-year-old woman admitted to the emergency department – in December 2020 – with complaints of slurred speech, confusion, and left upper limb weakness after one week of positive nasopharyngeal swab sample SARS-CoV-2.

Conclusions
While the patient had previous comorbidities like hypertension and diabetes, she had no prior history of ischemic stroke or thrombosis, so we conclude that unilateral acute basal ganglia infarction may be a unique neurological manifestation after COVID-19 infection in an elderly patient with previous comorbidities.
Espacios de formación y comercialización agroecológica: Lecciones aprendidas en la Universidad Central del Ecuador.
Authors: León-Vega Xavier , Pazmiño-Mayorga Jaime , Vivas-Vivas Ramiro , Cepeda-Bastidas Darío 
Published: November 2021

Los espacios de comercialización agroecológica se han expandido en el país, debido a la importancia que los productores y consumidores le están dando al origen y la forma de producción de los alimentos. Sin embargo, poco se ha estudiado sobre la interacción entre consumidores y productores en las ferias, y cómo éstas se convierten en espacios de aprendizaje y comercialización para ambos actores. Por ello, se analizó la feria de la Universidad Central del Ecuador, ya que es uno de los pocos casos en el país que es impulsado por un establecimiento educativo. Se emplearon diversas técnicas de recolección de datos, como entrevistas, encuestas y revisión bibliográfica sobre agroecología, mercados agroecológicos, circuitos cortos, redes y comercialización agroecológica. Se aplicaron dos encuestas a los consumidores de la feria. La primera encuesta fue realizada a los consumidores frecuentes en los primeros seis meses de funcionamiento, y la segunda encuesta después de un año, una vez que la feria estaba funcionando regularmente, para corroborar sus preferencias de consumo.
Los principales resultados indican que los consumidores son en su mayoría jóvenes y mujeres, que perciben a los productos agroecológicos como más sanos y naturales, lo cual influye en sus preferencias de compra. Se recomienda para futuras investigaciones de la Universidad profundizar en los roles, conocimientos y procesos de decisión inmersos en el consumo de productos agroecológicos.
Upper gastrointestinal bleeding in COVID-19 patients: A case series and review of the literature
Authors: Lala Vikash G. , Mahomed Adam , Seabi Manoko E. , Mokgoko Didintle , Botes Jaco H. 
Published: November 2021

ABSTRACT
The novel severe acute respiratory distress syndrome coronavirus 2 was declared a pandemic by the World Health Organization in 2019. The total number of infections and mortality continue to rise globally. The pandemic has changed the face of medicine in many regards. Upper gastrointestinal bleeding (UGIB) and the provision of endoscopy poses unique challenges in these patients. We present a case series of UGIB (variceal and non-variceal) in patients with SARS-CoV-2 and review the literature to provide guidance on management.
Machine Learning for Capillary Pressure Estimation
Authors: Kasha A. A. , Sakhaee-Pour A. , Hussein I. A. 
Published: November 2021

Summary
Capillary pressure plays an essential role in controlling multiphase flow in porous media and is often difficult to be estimated at subsurface conditions. The Leverett capillary pressure function J provides a convenient tool to address this shortcoming; however, its performance remains poor where there is a large scatter in the scaled data. Our aim, therefore, was to reduce the gaps between J curves and to develop a method that allows accurate scaling of capillary pressure. We developed two mathematical expressions based on permeability and porosity values of 214 rock samples taken from North America and the Middle East. Using the values as grouping features, we used pattern-recognition algorithms in machine learning to cluster the original data into different groups. In each wetting phase saturation, we were able to quantify the gaps between the J curves by determining the ratio of the maximum J to the minimum J. Graphical maps were developed to identify the corresponding group for a new rock sample after which the capillary pressure is estimated using the average J curve of the identified group and the permeability and porosity values of the rock sample. This method also provides better performance than the flow zone indicator (FZI) approach. The proposed technique was validated on six rock types and has successfully generated average capillary pressure curves that capture the trends and values of the experimentally measured data by mercury injection. Moreover, the proposed methodology in this study provides an advanced and a machine-learning-oriented approach for rock typing. In this paper, we provide a reliable and easy-to-use method for capillary pressure estimation in the absence of experimentally measured data by mercury injection.