bluuebunny/crossref_metadata_2025 huggingface dataset:
Subjective Academic Achievement, Economic Status, and Smoking and Drinking Behaviors among Adolescents
Authors: Park Min-Hee
Published: August 2022

This study aimed to examine the relationship between subjective academic achievement, economic status, and smoking and drinking behaviors among adolescents in one region of South Korea. In this study, a secondary analysis was performed on data of adolescents in 2020. The present study found that smokers had lower subjective academic scores than nonsmokers (t=15.343, p<0.001), and drinkers had lower subjective academic scores than nonsmokers (t=8.821, p<0.001). In terms of subjective economic status, smokers had lower subjective economic status scores than nonsmokers (t=7.378, p=0.003), and drinkers had lower subjective economic status scores than nonsmokers (t=6.080, p=0.001). Efforts should be made to increase academic achievement by preventing smoking and drinking behaviors in adolescents. Therefore, it is necessary to prevent an increase in exposure to smoking and drinking owing to socioeconomic status.
Subjective Health Cognition, Well-being, and Smoking and Drinking Behaviors among adolescents
Authors: Park Min-Hee
Published: August 2022

This study aimed to examine the relationship between subjective health cognition, well-being, and smoking and drinking behaviors among adolescents in one region of South Korea. The data used in this study were collected from adolescents in one region and analyzed using secondary analysis. The present study found that smokers had lower subjective health cognition scores than nonsmokers (t=10.200, p<0.001) and that drinkers had lower subjective health cognition scores than nonsmokers (t=5.422, p=0.001). In terms of subjective well-being, smokers scored lower than nonsmokers (t=12.234, p<0.001), and drinkers had lower subjective well-being scores than nonsmokers (t=10.582, p<0.001). Therefore, it is necessary to promote the health status and well-being of adolescents through smoking and drinking prevention education.
Factors Affecting the Drinking Rate of Adolescents
Authors: Park Min-Hee
Published: August 2022

This study was conducted to identify the factors affecting the drinking rate of adolescents in one region. This study aimed to investigate whether parental attitudes toward children's drinking and possession of alcohol at home affect adolescent drinking. For data analysis, the odds ratio was obtained through logistic regression analysis. As a result of this study, parents' attitudes toward their children's drinking and whether or not alcohol was kept at home were found to be major influencing factors on the ‘drinking experience rate’, ‘current drinking rate’, and ‘risk drinking rate’ among adolescents. Parents should be educated to firmly oppose the drinking of their children, and awareness should be raised to establish a culture of not keeping alcohol at home.
Intentions to Stop Drinking Among Adolescents in One Area
Authors: Park Min-Hee
Published: August 2022

This study was to investigate the intention of drinking cessation among adolescents in a certain area. In order to investigate the intention to stop drinking, the ‘non-drinking intention during adolescent’, the ‘drinking refusal intention’, and the ‘lifetime non-drinking intention’ were investigated, and the differences by gender and school were analyzed. Two samples t-test and F-test were used to analyze the results of this data. As a result of this study, it was found that the intention to stop drinking decreased as the school level increased. It is necessary to maintain continuous recognition about drinking, and it is necessary to improve the socially acceptable atmosphere for drinking.
Urysohn and Hammerstein operators on Hölder spaces
Authors: Pötzsche Christian
Published: August 2022

We present an application-oriented approach to Urysohn and Hammerstein integral operators acting between spaces of Hölder continuous functions over compact metric spaces. These nonlinear mappings are formulated by means of an abstract measure theoretical integral involving a finite measure. This flexible setting creates a common framework to tackle both such operators based on the Lebesgue integral like frequently met in applications, as well as, e.g., their spatial discretization using stable quadrature/cubature rules (Nyström methods). Under suitable Carathéodory conditions on the kernel functions, properties like well-definedness, boundedness, (complete) continuity and continuous differentiability are established. Furthermore, the special case of Hammerstein operators is understood as composition of Fredholm and Nemytskii operators. While our differentiability results for Urysohn operators appear to be new, the section on Nemytskii operators has a survey character. Finally, an appendix provides a rather comprehensive account summarizing the required preliminaries for Hölder continuous functions defined on metric spaces.
LpHardy's identities and inequalities for Dunkl operators
Authors: Wang Jianxiong
Published: August 2022

The main purpose of this article is to establish theLp{L}^{p}Hardy’s identities and inequalities for Dunkl operator on any finite balls and the entire spaceRN{{\mathbb{R}}}^{N}. We also prove Hardy’s identities and inequalities on certain domains with distance function to the boundary∂Ω\partial \Omega. In particular, we use the notion of Bessel pairs introduced in Ghoussoub and Moradifam to extend Hardy’s identities for the classical gradients obtained by Lam et al., Duy et al., Flynn et al. to Dunkl gradients introduced by Dunkl. Our Hardy’s identities with explicit Bessel pairs significantly improve many existing Hardy’s inequalities for Dunkl operators.
Resource Orchestration in Hub-Based Entrepreneurial Ecosystems: A Case Study on the Seaweed Industry
Authors: Lu Baozhou , Zhang Song
Published: August 2022

Hub-based entrepreneurial ecosystems (HEEs) have become an important venue for entrepreneurship. This study examines how ecosystem-specific resources and capabilities are orchestrated by ecosystem actors (i.e., hub firms and ecosystem entrepreneurs) to support the development of new ventures in the context of HEEs. Using an explorative single case study approach, we uncover nine distinctive resource orchestration subprocesses that are grouped into three aggregate processes that help sustain enduring entrepreneurship in the HEE context. Our findings extend and complement the literature on entrepreneurship and ecosystems by developing a new resource orchestration model and by illustrating how resource orchestration in an HEE facilitates the synergies across ecosystem ventures as well as the synergies between hub firms and ecosystem entrepreneurs in coexploring and coexploiting new opportunities.
Wong–Zakai approximations and support theorems for stochastic McKean–Vlasov equations
Authors: Xu Jie , Gong Jiayin
Published: August 2022

In this paper, we are concerned with the limit theory of stochastic McKean–Vlasov equations.
First, we prove the optimal

L
p

{L^{p}}

(

p
⩾
2

{p\geqslant 2}

) strong convergence rate of the Wong–Zakai approximation
for stochastic McKean–Vlasov equations. Then we show the support theorem for stochastic
McKean–Vlasov equations.
A miniaturized quad band hexagon patch antenna for GSM1800, C band and WiMAX applications
Authors: Mouhouche Faiza , Djafri Kahina , Dehmas Mokrane , Chibane Kahina , Ksentini Safa
Published: August 2022

In this article, a miniaturized patch antenna using fractal DGS and SRR DMS for GSM1800, C band and WiMAX applications is presented and investigated. Antenna miniaturization and multiband are accomplished by employing a fractal loop on the DGS structure and a split ring resonator slot in the patch. The proposed radiator has a hexagonal shape that operates at 6.8 GHz. To achieve downsize of 20.58, 38.22, 55.14 and 72.75% an antenna is designed using DGS and DMS structures for quad-band application appearing at 1.85, 3.05, 4.2, and 5.4 GHz. Simulated and tested data are investigated. The prototype antenna has adequate advantages, with a simple structure, compact size, multiband, and uniform radiation patterns.
Crystal structure of [diaqua-bis(2-((1H-tetrazol-1-yl)methyl)-5-carboxy-1H-imidazole-4-carboxylato-κ2
N,O) manganese(II)] dihydrate, C14H18MnN12O12
Authors: Zhang Ya-Ping , Li Zu-Tian
Published: August 2022

C14H18MnN12O12, monoclinic, P21/c (no. 14), a = 9.333(7) Å, b = 19.038(13) Å, c = 7.042(5) Å, β = 111.989(10)°, V = 1160.2(14) Å3, Z = 2, Rgt
(F) = 0.0301, wRref
(F
2) = 0.0809, T = 293(2) K.
Fractal analysis of retinal vasculature in relation with retinal diseases – an machine learning approach
Authors: Venkataramani Deepika , Veeranan Jeyalakshmi , Pitchai Latha
Published: August 2022

Diabetic retinopathy (DR) is caused by diabetes mellitus. Vision loss occurs as a result of DR. The goal of this study was to use the DIARETDB-1, DIARETDB-0, STARE, MESSIDOR, E-ophtha-EX, and E-ophtha-MA databases to do Fourier fractal analysis and see how it is related to retinal illnesses. Following the extraction and inversion of colour channels, blood vessel augmentation was conducted. For the blood vessel enhanced image, the fractal dimension was determined. For DR patients and normal patients, measures such as standard deviation, mean, and significance were calculated. In the E-ophtha-EX database, significance was realized. In the DIARETDB-1, STARE, and DIARETDB-0 databases, the mean fractal value for normal patients is higher than for DR patients. The STARE database’s forecast of the association between fractal dimensions and various retinal disorders and the E-ophtha-EX database’s accomplishment of significance are the study’s main highlights. This study also improved the robustness of the blood vessel extraction there and increased the accuracy of its diagnosis.
Development of a novel magnet system for a 1 kg Planck balance
Authors: Pabst Markus , Fröhlich Thomas , Marin Sebastian
Published: August 2022

The following paper presents the development of a novel magnet system for use in a 1 kg Planck balance. For this purpose, several preliminary theoretical and experimental investigations were carried out and an optimized prototype magnetic system was modeled, designed and built based on the results. Initial measurements showed that the magnet system with an outer diameter of 104mm and a height of 50mm achieved a constant average value of 85.25NA−1 at a range of motion of ±0.6mm.
Tiefenscannende Interferometrie mit Unterabtastung in Kombination mit einem neuartigem RGB-Doppelpuls-Korrelations- Algorithmus zur Topographieerfassung
Authors: Gollor Pascal , Lehmann Peter
Published: August 2022

In diesem Beitrag wird ein Messsystem vorgestellt, das auf einem tiefenscannenden Micheslon-RGB-Interferometer zur Erfassung von 3DMikrotopographien beruht. Bei der Messung des Interferenzsignals wird bewusst das Nyquist-Shannon- Abtasttheorem verletzt, so dass die Messgeschwindigkeit im Vergleich zu einem klassischen Weißlichtinterferometer (WLI) signifikant erhöht werden kann, ohne auf die Vorteile des WLI, wie einen großen Eindeutigkeitsbereich und axialen Messbereich, verzichten zu müssen. Das RGBInterferometer wird mit einem Auswertealgorithmus kombiniert, der die Oberflächentopographie durch eine Korrelationsanalyse zwischen einem Mess- und einem Referenzsignal mit Nanometer-Höhenauflösung bestimmen kann. Der Messprozess wird anhand eines Stufenmessnormals experimentell validiert.
Eigenschaften und spezielle Phänomene von Dehnungssensoren aus Kohlenstoffpartikel-Elastomerverbunden
Authors: Mersch Johannes , Gerlach Gerald
Published: August 2022

Eine häufig untersuchte Materialklasse für Anwendungen, die hochdehnbare und nachgiebige Sensoren erfordern, sind Elastomere mit einem perkolativen Netzwerk aus Kohlenstoffpartikeln, z.B. Leitruß oder Kohlenstoffnanoröhrchen (CNT Carbon Nano Tubes). Diese haben für neuartige Anwendungen wie weiche Roboter oder Smart Textiles einige Vorteile gegenüber den etablierten Dehnmessstreifen. Gleichzeitig ist ihre Funktionsweise aber noch nicht ausreichend verstanden. Solche Materialien werden in dieser Arbeit als Dehnungssensoren in Bezug auf ihr dynamisches Verhalten untersucht und ihre aktuellen Limitierungen aufgezeigt. Dabei wird ersichtlich, dass derartige Sensoren unter dynamischen Belastungen eine nicht monotone Kennlinie aufweisen, die sich deutlich von der in quasi-statischen Versuchen unterscheidet. Aus den Ergebnissen und einem aufgestellten Netzwerkmodell werden zwei Strategien zur Verbesserung der Sensoreigenschaften abgeleitet, modelliert und experimentell analysiert. Erstens werden durch einen Schmelzspinnprozess verschiedene Grade von Anisotropie realisiert, der die CNT-Füllpartikel in Prozessrichtung orientiert. Zweitens wird durch eine zusätzliche auxetische Trägerstruktur eine lokal negative Querkontraktion erzeugt. Während die dadurch erzeugte Anisotropie nicht ausreichend ist, um eine Verbesserung der Sensoreigenschaften zu erreichen, kann die Dehnungssensitivität durch die auxetische Struktur deutlich gesteigert werden.
Erweiterungen zum Aufbau eines zwei Photonen basierten direkten Laserschreibers zur großflächigen, hochpäzisen Nanostrukturierung
Authors: Häcker Annika-Verena , Manske Eberhard
Published: August 2022

Zur Realisierung extrem feiner Strukturen spielen direkte Laserschreibprozesse, basierend auf Zwei-Photonen-Absorptionsverfahren (2PA), eine zentrale Rolle in der Mikro- und Nanofabrikation. Dafür ist neben einem Lasersystem ein hochpräzises Positioniersystem notwendig. Meist basieren diese Positioniersysteme auf Prinzipien, die ohne zusätzliche Stiching-Verfahren nur kleine Positionierbereiche ermöglichen. Für piezoelektrische Tische sind zum Beispiel nur einige hundert Mikrometer möglich. Auf Galvanometer-Scannern basierten Systemen können sogar nur Positionierbereiche von wenigen zehn Mikrometern realisiert werden. Um ohne zusätzliche Stiching Verfahren größere Fertigungsbereiche mit hoher Präzision für Mikro- und Nanostrukturierung zu ermöglichen, wurde ein Aufbau aus einem Femtosekundenlaser für 2PA und einer Nanopositionier- und Nanomessmaschine (NMM-1) entwickelt [3]. Die NMM-1 wurde an der TU Ilmenau zusammen mit der SIOS Meßtechnik GmbH entwickelt, mit einem Positioniervolumen von 25mm×25mm×5mm und einer Positionierauflösung im Sub-Nanometerbereich. Dieser Aufbau wurde in den letzten Jahren weiter entwickelt und Strukturbreiten konnten reduziert werden [2]. Der Schwerpunkt liegt dabei auf der Entwicklung einer funktionalen Einheit aus Femtosekundenlaser und NMM-1. Dies soll die Komplexität erhöhen und die Homogenität der geschriebenen Strukturen stark verbessern.
Minimal-invasive faseroptische Endomikroskopie für die Medizin
Authors: Dremel Jakob , Scharf Elias , Kuschmierz Robert , Czarske Jürgen
Published: August 2022

Endoskope sind für die minimalinvasive Chirurgie essenziell. Dabei ist vor allem ein hohes Auflösungsvermögen bei geringem Durchmesser gefordert. Kommerzielle auf Faserbündel basierte Verfahren verwenden aufgrund der gestörten Phaseninformation lediglich die Intensitätsinformation und erreichen so eine maximale Auflösung von 10 kpx bei einem Endoskopdurchmesser im mm-Bereich. Hier wird ein neuartiges Verfahren vorgestellt, welches durch empfangsseitige Kompensation der Phasenstörung eine Auflösung von ≈ 69 kpx bei gleichzeitig reduziertem Durchmesser von 400 μm erreicht.
The ternary system Sc–Co–In at 870 K: the isothermal section and the crystal structures of the compounds
Authors: Gulay Nataliya L. , Tyvanchuk Yuriy B. , Pöttgen Rainer , Kalychak Yaroslav M.
Published: August 2022

The isothermal section of the Sc–Co–In system at T = 870 K has been constructed using X-ray powder diffraction and SEM/EDX data. At the studied temperature, nine ternary compounds are formed: Sc50Co12.5In3.5 (Ag7+x
Mg24−x
-type structure, space group Fm

3
‾

$\overline{3}$

, a = 17.7411 Å), Sc14Co3.10In2.59 (Lu14Co3In3 type, P42/nmc, a = 8.8913, c = 21.387 Å), Sc6Co2.18In0.82 (Ho6Co2Ga type, Immm, a = 8.867, b = 8.780, c = 9.321 Å), Sc2CoIn (Pt2ZnCd type, P4/mmm, a = 3.2887, c = 7.1642 Å), Sc11Co4In9 (Nd11Pd4In9 type, Cmmm, a = 13.836, b = 20.758, c = 3.351 Å), Sc5Co2In4 (Lu5Ni2In4 type, Pbam, a = 17.3400, b = 7.5940, c = 3.3128 Å), Sc3Co1.64In4 (Lu3Co2−x
In4 type, P

6
‾

$\overline{6}$

, a = 7.6702, c = 3.3595 Å), Sc10Co9In20 (Ho10Ni9In20 type, P4/nmm, a = 12.8331, c = 9.0226 Å), Sc0.5In0.5Co2 (ternary non-centrosymmetric derivative of the Laves phase MgNi2, P63
mc, a = 4.8910, c = 16.0166 Å, with a homogeneity range from 12.3 to 16.7 at% of indium). The cubic phase ScCo4In (MgCu4Sn type, F

4
‾

$\overline{4}$

3m, a = 6.9230(8) Å) is evidently present in the cast samples and disappears after the annealing procedure. A Sc/In substitution was observed for the solid solution Sc1−x
In
x
Co2 (x = 0–0.26) with the structure of the cubic Laves phase (MgCu2 type) and also for the hexagonal Sc0.5In0.5Co2-type phase.
Lu26
T
17–x
In
x
(T = Rh, Ir, Pt) – first indium intermetallics with Sm26Co11Ga6-type structure
Authors: Gulay Nataliya L. , Kösters Jutta , Reimann Maximilian Kai , Kalychak Yaroslav M. , Pöttgen Rainer
Published: August 2022

Several Lu26
T
17−x
In
x
(T = Rh, Ir, Pt) phases with varying x values were obtained by induction-melting reactions of the elements in sealed tantalum ampoules. All samples were characterized through their X-ray powder diffraction patterns. These compounds crystallize with the tetragonal Sm26Co11Ga6-type structure, space group P4/mbm and Z = 2. The structure of Lu26Pt7.55In9.45 has been refined from single-crystal X-ray diffractometer data: a = 1165.32(5), c = 1547.46(6) pm, wR2 = 0.0895, 2173 F
2 values and 70 variables. The Lu26
T
17−x
In
x
phases are the first indium representatives of the Sm26Co11Ga6 type. They belong to the n = 4 members of Parthé’s A
5n+6
B
3n+5 series, which show different stacking sequences of square prisms and antiprisms. Lu26Pt7.55In9.45 as a lutetium-rich intermetallic compound exhibits a broader range of shorter Lu–Lu distances (341–375 pm). Temperature dependent magnetic susceptibility measurements show Pauli paramagnetism for Lu26Ir8.5In8.5 and Lu26Rh7In10 with room temperature values of the magnetic susceptibility of χ = 1.53 × 10−3 emu mol−1 for Lu26Rh7In10 and χ = 6.54 × 10−4 emu mol−1 for Lu26Ir8.5In8.5.
Black carbon and particulate matter mass concentrations in the Metropolitan District of Caracas, Venezuela: An assessment of temporal variation and contributing sources
Authors: Engelhardt Vanessa , Pérez Tibisay , Donoso Loreto , Müller Thomas , Wiedensohler Alfred
Published: August 2022

Atmospheric aerosols play an important role in atmospheric processes and human health. Characterizing atmospheric aerosols and identifying their sources in large cities is relevant to propose site-specific air pollution mitigation strategies. In this study, we measured the mass concentration of atmospheric aerosols with an aerodynamic diameter smaller than 2.5 µm (PM2.5) in the city of Caracas (urban) and in a tropical montane cloud forest (suburban site, located in a mountainous area 11 km far from Caracas) between June 2018 and October 2019. We also measured equivalent black carbon (eBC) mass concentration in PM2.5 in Caracas during the same period. Our goal is to assess PM2.5 and eBC temporal variation and identify their major sources in the area. eBC showed a pronounced diurnal cycle in the urban site, mainly modulated by traffic circulation and the diurnal changes of the mixing layer height. In contrast, PM2.5 showed stable median values during the day with slight variations like that of eBC. In the forest site, PM2.5 values were higher in the afternoons due to the convective transport of aerosols from Caracas and other surrounding urban areas located in adjacent valleys. The annual median for eBC and PM2.5 was 1.6 and 9.2 µg m–3, respectively, in the urban site, while PM2.5 in the forest site was 6.6 µg m–3. To our knowledge, these are the first measurements of this type in the northernmost area of South America. eBC and PM2.5 sources identification during wet and dry seasons was obtained by percentiles of the conditional bivariate probability function (CBPF). CBPF showed seasonal variations of eBC and PM2.5 sources and that their contributions are higher during the dry season. Biomass burning events are a relevant contributing source of aerosols for both sites of measurements inferred by fire pixels from satellite data, the national fire department’s statistics data, and backward trajectories. Our results indicate that biomass burning might affect the atmosphere on a regional scale, contribute to regional warming, and have implications for local and regional air quality and, therefore, human health.
Społeczna i polityczna rola kobiet z kręgów władzy w państwach krzyżowych i Bizancjum w okresie od pierwszej do czwartej krucjaty, ss. 353
Authors:   Uniwersytet w Białymstoku, Kossakowski Krzysztof
Published: August 2022

The PhD dissertation “Social and political roles of Women connected with power and authority in Crusader States and Byzantium from the first to the fourth Crusade” was written under the supervision of dr hab. Rafał Kosiński prof. UwB. The work concerns women’s participation in power and authority and their hidden influence in Crusader States and Byzantium in the twelfth century. Its purpose is to compare women’s roles in politics in Western Europe, Outremer and Byzantine Empire. Moreover this work is concentrated on establishing differences and similarities between overmentioned countries and it attempts to explain their causes. It uses mostly narrative sources in Latin and Greek. Sociological theory of social roles (created by Florian Znaniecki and Erving Goffman) was used as an analytical method. Thanks to it the work established nine basic tasks connected to the social role of queen, empress or generally female ruler. Based on that were created models of ideal female ruler in the West, Crusader states and Byzantium, which could be compared relatively easily.
ANAYASA MAHKEMESİ’NİN 5651 SAYILI KANUN’UN 9. MADDESİ BAĞLAMINDA İNTERNETE ERİŞİMİN ENGELLENMESİNE DAİR DEĞİŞEN YAKLAŞIMININ DEĞERLENDİRİLMESİ
Authors: IŞIK Alper
Published: August 2022

5651 sayılı İnternet Ortamında Yapılan Yayınların Düzenlenmesi ve Bu Yayınlar Yoluyla İşlenen Suçlarla Mücadele Edilmesi Hakkında Kanun (5651 sayılı Kanun), Türk hukukunda internete erişimin engellenmesi usullerini belirleyen temel kanundur. Söz konusu Kanun’un 9. Maddesi, kişilik hakkı ihlallerinde erişim engeli usulünü düzenlemektedir. Madde ifade özgürlüğüne bir müdahale oluşturduğu için, sürekli olarak Anayasa Mahkemesi’ne (AYM) bireysel başvuru konusu yapılmaktadır. AYM şimdiye kadar olan içtihatlarında maddenin ne şekilde anlaşılması gerektiği konusunda zengin bir içtihat oluşturmuştur. Ancak hem uygulamada hem de kanun metninde ifade özgürlüğünün yeterince koruma altına alınmamış olması sonucunda Mahkeme, söz konusu içtihadında değişikliğe gitmiş ve pilot karar usulünü uygulayarak ihlalin kanundan kaynaklandığına hükmetmiştir. AYM bu kararla söz konusu maddeyi tartışmaya açmış ve yasama organını bu konuda yasal düzenleme yapmaya davet etmiştir. Makalede, AYM kararı, sonrasında ortaya çıkabilecek olası durumlar ve internete erişim engeli usulünün nasıl olması gerektiği ele alınacaktır.
Habilidades de pensamiento, comprensión lectora y memoria operativa en estudiantado normalista
Authors: Esquivel-Gámez Ismael , Gálvez-Buenfil Karina Estela , Barrios-Martínez Flora Lilia
Published: August 2022

Objetivo. El presente trabajo tuvo como propósito evaluar las habilidades de pensamiento, la comprensión lectora y la memoria operativa en estudiantes normalistas de Veracruz, México, y analizar las posibles relaciones entre estas, a fin de tener las bases para prevenir posibles deficiencias y solventarlas desde su formación docente. Metodología. Se trata de un estudio con enfoque cuantitativo y un tipo de diseño descriptivo, transversal, observacional y prospectivo; participan 45 estudiantes de dos instituciones de la zona. Para medir las habilidades de pensamiento se usaron diferentes pruebas y una escala de Likert con 19 ítems, para la comprensión lectora se usó una prueba tipo cloze y para la memoria operativa en su dominio verbal y en el viso-espacial, se usaron tareas de alcance complejo. Análisis de resultados. Se encontraron serias deficiencias en las habilidades de pensamiento, de las cuales las correspondientes al razonamiento inductivo verbal y figurativo tuvieron asociación positiva y significativa con algunas mediciones de memoria operativa verbal y viso-espacial. Además, el nivel de comprensión lectora fue bajo y con asociación positiva a pruebas de habilidades de pensamiento, que requerían poco o nulo esfuerzo lector. Conclusiones. Este trabajo permite, en primer lugar, reconocer la condición preocupante del futuro personal docente de niños y niñas en habilidades cognitivas básicas y, en segundo lugar, plantear caminos para desarrollar las habilidades de pensamiento mediante el entrenamiento de la memoria operativa y el fortalecimiento de la comprensión lectora y del vocabulario.
Evaluación de un programa de desarrollo personal para estudiantado chileno de educación secundaria
Authors: Lagos-San Martín Nelly , Hermosilla-Cabrera Víctor , García-Fernández José Manuel , Palma-Luengo Maritza , Ossa-Cornejo Carlos
Published: August 2022

Objetivo. Se propone y somete a evaluación una adaptación del programa de desarrollo personal creado en España para utilizarlo en el contexto educativo chileno. Ello, con la idea de proporcionar una propuesta concreta que fortalezca uno de los ejes temáticos propuestos en Chile como parte de la formación personal de adolescentes y evaluarla para determinar su eficacia. Metodología. El diseño de investigación utilizado corresponde a una línea cuasi-experimental con pre y post-test y grupo control, se calculan pruebas “t” para determinar la existencia de diferencias estadísticas, entre los resultados de la evaluación inicial y final del autoconcepto, la inteligencia emocional, la ansiedad y la autoeficacia. Dichos constructos fueron medidos con el Self-Description Questionnaire II, versión breve (SDQII-S), el Trait Meta-Mood Scale 24 (TMMS-24), la Escala de ansiedad estado y rasgo (STAI-S) y el Cuestionario de autoeficacia general. La muestra consideró un total de 182 estudiantes de educación media de la comuna de Chillán, 88 hombres y 94 mujeres (48% y 52% respectivamente), con edades entre 14 y 17 años (M=15; DE; 1,01), quienes fueron seleccionados por conveniencia, atendiendo al criterio de accesibilidad. Resultados. Los resultados indican que el programa evidencia mejoras estadísticamente significativas de pequeña y moderada magnitud, en el grupo experimental. Conclusión. El programa fue valorado positivamente a partir de una encuesta de satisfacción, con lo que se estima que esta propuesta ha sabido responder a la necesidad formativa del sistema educativo chileno.
Usos y abusos de las redes sociales por estudiantado español de Educación Secundaria
Authors: Dans-Álvarez-de-Sotomayor Isabel , Muñoz-Carril Pablo César , González-Sanmamed Mercedes
Published: August 2022

Objetivo. Este artículo centra su foco de atención en las percepciones que manifiestan adolescentes respecto al empleo de las redes sociales. Concretamente, su objetivo principal es determinar qué aspectos relacionados con las redes sociales preocupan a la juventud de la ciudad de A Coruña (España). Metodología. El estudio se ha realizado con una metodología cuantitativa con un diseño no experimental del tipo ex post facto, se utilizó un cuestionario que respondieron 1144 adolescentes de 4.º ESO. Resultados. Los resultados muestran que la adicción y el engaño son las cuestiones que suscitan mayor preocupación. Además, se han encontrado diferencias significativas entre las personas participantes: las mujeres conocen mejor los riesgos, y los hombres, con un perfil de rendimiento académico bajo, son más atrevidos y se sienten más condicionados en su estado de ánimo en función de las redes sociales que utilizan. Conclusiones. Las personas menores sí conocen los peligros de las redes sociales, se muestran reticentes a exponer públicamente a sus familias y manifiestan percepciones diferentes sobre su propia imagen y la de sus amistades.
Real-time Boredom Evaluation Technique in College Students
Authors: Garro-Mena Leonardo , Calderón-Castro Jenny Andrea
Published: August 2022

Introduction. Various studies have associated boredom in educational processes with a variety of negative effects. It is believed that boredom is caused by a failure in the environment to fulfill our need for motivation. Many tools (scales) have been developed to measure it. However, these scales are designed to measure global boredom, that is, at the end of the process, not in its stages. The present study seeks to develop a methodology to evaluate the effect of boredom in the stages of a university class to have a tool for the quantitative evaluation of specific activities. Method. This study proposed a boredom measurement scale with a minimally disruptive intervention tool. The data obtained undergo mathematical processing to reduce the effect of subjectivity (perceived level of boredom) on the scale. The proposed methodology was applied to a group of students from the University of Costa Rica. Results. The most important result was the correlation between specific activities in a class and the gradient of boredom. Discussion. The reduction in the variability between students achieved with mathematical processing allows the proposed methodology to be used for the quantitative analysis of the stages of a class based on perceived boredom. This information can be used to design learning processes focused not only on the global process but on each stage of it, which, to the best of our knowledge, is not achieved by any of the commonly used scales.
Pion Production in νμ Charged Current Interactions on 40Ar in Deep Underground Neutrino Experiment
Authors: Devi R. , Potukuchi B.
Published: August 2022

Understanding the pion generation and the consequences of final-state interactions (FSI) are critical for the data processing in all neutrino experiments. The energy utilized in modern neutrino researches of the resonance (RES) generation processes contributes significantly to the pion production. If a pion is absorbed in the nuclear matter after its production, the event may become unrecognizable from a quasielastic (QE) scattering process and act as a background. For oscillation experiments, estimating this background is critical, and it necessitates solid theoretical models for both pion generation at the primary vertex and after FSI. The number of pions created after FSI differs greatly from the number produced at the primary vertex due to FSI. Because neutrino detectors can only detect final-state particles, FSI obscures the proper information about particles created at the primary vertex. A detailed study of FSI is required to overcome this problem, which theoretical models incorporated in Monte Carlo (MC) neutrino event generators can provide. They should give theoretical results concerning the neutrino interactions for various researches, acting as a connection among both theoretical models and experimental data. In this paper, we provide simulated events for the pion creation in νμ charge current (CC) interactions on a 40Ar target in the Deep Underground Neutrino Experiment (DUNE) setup for two distinct MC generators: GENIE and NuWro. In comparison to GENIE (v-3.00.06), NuWro (v-19.02.2) is more opaque (less responsive) to the charge exchange and absorption processes; pions are more likely to be absorbed than produced during the intranuclear transport.
Статистичний аналіз нормально розподілених даних із обмеженим інтервалом розсіяння значень, перетворених прямими g(x) = x2; cos x; ax та оберненими до них функціями
Authors: Kosobutskyy P.
Published: August 2022

Робота присвячена теоретичному аналiзу коректного застосування моделi неперервної нормально розподiленої випадкової величини при обґрунтуваннi так званих формул перенесення похибок в задачi статистичного опрацювання експериментальних даних. Звернута увага на роль обмеження iнтервалу розсiяння значень випадкової величини, пiдданої нелiнiйним прямим g(X) перетворенням елементарними функцiями X2; aX та cos X, i оберненими до них g-1(X) = √X, arccos X, loga X. Дослiджено закономiрностi статистичного усереднення даних, одержаних шляхом розкладу функцiй перетворення в ряд Тейлора. Для пiдтвердження правомiрностi одержаних результатiв використано метод оптимiзацiї квадратичного функцiонала.
Features of Mechanisms of Electrical Conductivity in Semiconductive Solid Solution Lu1 – xScxNiSb
Authors: Romaka V.V. , Romaka V.A. , Stadnyk Y.V. , Romaka L.P. , Demchenko P.Y. , Pashkevych V.Z. , Horyn A.M.
Published: August 2022

A comprehensive study of the crystal and electronic structures, thermodynamic, electrokinetic, energy, and magnetic properties of the semiconductive solid solution Lu1-xScxNiSb, x = 0 – 0.10, revealed the possibility of doping Sc atoms of different crystallographic sites depending on their concentration. This leads to the generation of structural defects of donor and/or acceptor nature and the appearance of the corresponding energy levels (bands) in the band gap єg. The ratio of ionized donors and acceptors (degree of compensation) determines the position of the Fermi level єF in Lu1-xScxNiSb. The dependence of the rate of generation of energy levels and the position of the Fermi level єF on the impurity concentration Sc, which determines the mechanism of electrical conductivity of Lu1-xScxNiSb, is established. The investigated Lu1-xScxNiSb solid solution is a promising thermoelectric material.
Nemi, demográfiai és nemi egalitarianizmussal kapcsolatos vélekedés szerinti sajátosságok a hosszú távra szóló párválasztással kapcsolatos attitűdökben
Authors: Ocsenás Dorottya , Kovács Judit
Published: August 2022

Háttér és célkitűzések

A kutatás céljának azt tűztük ki, hogy rámutasson a nemi, demográfiai és egyenlőségelvűséggel kapcsolatos vélekedés szerinti sajátosságokra a hosszú távra szóló párválasztási preferenciákkal kapcsolatos attitűdökben. Kérdéseinket a hagyományos és modern párválasztási preferenciákat magyarázni képes vonatkozó szociálpszichológiai elméletek alapján fogalmaztuk meg. Általánosságban azt vártuk, hogy a mintában a férfiakkal és nőkkel szembeni preferenciák hordoznak modern, de hordoznak hagyományos tartalmakat is. A nőktől, a fiatalabbaktól, az iskolázottabbaktól és a nemek szerepéről inkább egyenlőségelvűen gondolkozóktól azt vártuk, hogy preferenciáikban erősebben tükröződnek modern, mint hagyományos tartalmak.

Módszer

A mintavétel kényelmi alapon történt. A vizsgálati személyek (N = 534, férfi: 139, nő: 395) online kérdőívet töltöttek ki, amely demográfiai kérdőívből, hosszú távra szóló párkapcsolati választáskor a férfiaktól és nőktől elvárt tulajdonságok értékeléséből és a Beere-féle nemiszerep-egyenlőség kérdőívből állt.

Eredmények

Mindkét nem véleménye szerint és mindkét nemmel kapcsolatban a hosszú távú bizalmi kapcsolatban való jó partnerség szempontjából lényeges társas tulajdonságok, mint a megbízhatóság és az őszinteség a legfontosabbak. A preferenciák függetlenek maradtak a többi vizsgált változótól, és a nagyobb tulajdonságcsoportok fontossági sorrendje állandónak bizonyult (nőknél: jó partner nő, házias nő, emancipált nő; férfiaknál: jó partner férfi, férfias férfi, vonzó férfi, házias férfi).

Következtetések

A férfiak és nők véleménye hasonló azzal kapcsolatban, hogy a jó hosszú távú párkapcsolathoz elsősorban a jó partnerséghez kötődő tulajdonságok a legfontosabbak, függetlenül attól, hogy férfiról vagy nőről van szó. A preferenciák állandónak nevezhetők, az elvárások sorrendjét a kitöltő neme, az életkora, az egyenlőségelvűséggel kapcsolatos vélekedései, az iskolázottság és a vallásosság nem árnyalja, bár finom hangsúlybeli eltérések a nevezett változók tekintetében azonosíthatók.
Amiodarone that has antibacterial effect against human pathogens may represent a novel catheter lock
Authors: Ittzes Balazs , Szentkiralyi Eva , Szabo Zoltan , Batai Istvan Z. , Gyorffy Ors , Kovacs Tamas , Batai Istvan , Kerenyi Monika
Published: August 2022

Infection is one of the most feared hospital-acquired complications. Infusion therapy is frequently administered through a central line. Infusions facilitating bacterial growth may be a source of central line-associated bloodstream infections. On the other hand, medications that kill bacteria may protect against this kind of infection and may be used as a catheter lock.

In this study, we examined the impact of amiodarone on bacterial growth. Amiodarone is used for controlling cardiac arrhythmias and can be administered as an infusion for weeks. Standard microbiological methods have been used to study the growth of laboratory strains and clinical isolates of Staphylococcus aureus, Staphylococcus epidermidis, Pseudomonas aeruginosa, Escherichia coli, Klebsiella pneumoniae, and multidrug-resistant Acinetobacter baumannii in amiodarone. The minimum inhibitory concentration (MIC) of amiodarone was determined. Bacterial growth from in use amiodarone syringes and giving sets was also investigated.

Most examined strains were killed within 1 min in amiodarone. The other strains were killed within 1 h. The MICs of amiodarone were <0.5–32 μg/mL.

Amiodarone infusion is unlikely to be responsible for bloodstream infections as contaminating bacteria are killed within 1 h. Amiodarone may also protect against central line infections if used as a catheter lock.
Spa diversity and genetic characterization of t127 methicillin-resistant Staphylococcus aureus in a tertiary Greek hospital
Authors: Tsergouli Katerina , Karampatakis Theodoros , Kontopoulou Konstantina , Pappa Styliani , Kampouridou Parthena , Kallasidou Georgia , Tsioka Katerina , Zotou Sophia , Farmaki Εleftheria - Eugenia , Kotzamanidis Charalampos , Papa Anna
Published: August 2022

Introduction

Methicillin-resistant Staphy
lococcus aureus (MRSA) causes severe community and hospital acquired infections. Identification of staphylococcal cassette chromosome mec (SCCmec), multilocus-sequence typing, and sequencing of S. aureus protein A (spa) gene are used for MRSA typing. The aim was to investigate the spa types of MRSA isolates in a tertiary hospital in Greece and analyse the whole genome sequences of two t127 MRSA isolates.

Methods

Totally, 39 MRSA isolates collected from July 2019 to June 2020 in “Georgios Gennimatas” General Hospital of Thessaloniki, Greece, were included in the study. Identification and antimicrobial susceptibility testing were performed using VITEK II automated system, and spa typing was performed. A minimum spanning tree was used to display the spa type frequencies and the genetic distances among them. Two t127-MRSA isolates (IM-MRSA and PD-MRSA) were selected for WGS.

Results

Six isolates (15.4%) were resistant to mupirocin, 18 (46.2%) to fusidic acid, three (7.7%) to vancomycin and two (5.1%) to teicoplanin. Twenty-two different spa types were detected, with t002, t003, and t422 being the most frequent (5/39, 12.8% each), followed by t1994 (4/39, 10.3%). The isolates presented high genetic diversity and, taking into account the time between hospital admission and sampling, intrahospital spread did not occur. Even the two t127 isolates were assigned to different sequence types, ST9-XII-t127 and ST1-IVa-t127. Plasmids and genes conferring antimicrobial resistance and virulence were also identified.

Conclusions

Various spa types were identified and together with the information about the time between hospital admission and sampling supports polyclonal MRSA spread in the hospital excluding a nosocomial infection. WGS provides a more detailed analysis distinguishing even the isolates belonging to the same spa type.
Phosphorous-containing copolymers loaded with silver nanoparticles for biomedical purposes
Authors: Gorbunova Marina , Lemkina Larisa , Beloglazova Yulia
Published: August 2022

tris(diethylamino)diallylaminophosphonium tetrafluoroborate (DAAP-BF4) and chloride (DAAP-Cl) with N-vinylpyrrolidone (VP) were developed. The reduction of silver ions into silver nanoparticles was achieved using NaBH4 as a reducing agent. UV-spectroscopy and scanning electron microscopy techniques were used to characterize the formation of silver nanoparticles in copolymers. The average silver particle size ranged from 10 to 20 nm, with the corresponding UV-vis absorption peak position at 395–405 nm. The AgNCs exhibited significant cytotoxic activity towards rhabdomyosarcoma and melanoma line cells and completely inhibited bacterial growth, including both Gram-positive and Gram-negative bacteria.
The effect of processing conditions on the dielectric properties of doped calcium lanthanum nickelate
Authors: Deeva Yulia A. , Mirzorakhimov Abdullo A. , Suntsov Alexey Yu. , Kadyrova Nadezhda I. , Melnikova Nina V. , Chupakhina Tatyana I.
Published: August 2022

The influence of thermal and thermobaric (TBT) effects on the structure, microstructure, and dielectric properties of ceramics based on solid solutions of the La1.8Ca0.2Ni0.8M0.2O4+δ (M = Co, Cu) composition was studied. TBT treatment of the samples leads to a change in the grain morphology of ceramics and an increase in the dielectric constant compared to its value only after heat treatment. The change in the anisotropy of the coordination (La,Ca)O9 and (Ni,M)O6 polyhedra after TBT contributed to interlayer polarization in the crystal structure of La1.8Ca0.2Ni0.8M0.2O4+δ.
Structure and microwave dielectric properties of Bi- and Ge-doped calcium molybdate
Authors: Mikhaylovskaya Zoya A. , Buyanova Elena S. , Petrova Sofia A. , Pankrushina Elizaveta A. , Malkin Alexander I. , Korotkov Alexey N. , Knyazev Nikolay S.
Published: August 2022

The powders of Ca1–2xBi2xMo1–xGexO4 solid solutions weresynthesized by the conventional solid state method and investigated by X–ray powder diffraction and Raman spectroscopy. The Ca1–2xBi2xMo1–xGexO4 compositions crystallize in scheelite structure (sp. gr. I41/a) at 0 x  0.4, but traces of bismuth germanates are detected by scanning electron microscopy. The x = 0.5 composition contains several phases with BiVO4- type structures. Raman spectroscopy detected the deformation of [BO4]2– polyhedra and changes in B–O bond length (B = Mo, Ge). The energy gaps were calculated from the diffuse scattering spectra by the Kubelka-Munk method. Energy gap (Eg) values decrease with x from 3.29 eV to 2.91 eV, probably due to 6s2 electrons of bismuth in the valence band and changes of the conductivity band by electrons of germanium. Such values of Eg can provide photocatalytical activity of powders under UV and visible light. The electrodynamic parameters of the ceramic sample of Ca1–2xBi2xMo1–xGexO4 were measured by the transmission line method. The average permittivity increases with x from ~10 to ~18 which correlates with theoretical ε, Vmol and total polarizability of samples. An increase in the concentration of bismuth and germanium leads to the additional resonant peaks in the spectra of ε, S11 and S21. These resonant peaks can be probably caused by the appearance of irregular structural domains of Bi atoms or induced by the increased size of grains in the ceramic samples.
Introducing our new Editorial Board Members
Authors: Medvedev Dmitry A.
Published: August 2022

The Chimica Techno Acta (CTA) journal was established in 2014. Since then, CTA has grown into a recognized platform for reporting recent advances in engineering chemistry. We would like to express our deep appreciation to all our authors, reviewers and readers, whose valuable participation has contributed greatly to the current level of CTA.One year ago, in a desire to further enhance the journal’s visibility and impact, a number of important changes were initiated, such as visual redesigning of the journal’s website, updating editorial policies and clarifying the Aims Scope. More importantly, we undertook a step towards expanding our Editorial Board team. As a result of this initiative, we are glad to welcome Prof. Ekaterina Kozlova from the Boreskov Institute of Catalysis and Dr. Farid Orudzhev from the Immanuel Kant Baltic Federal University as our new Editorial Board Members.
Evaluation of the dosimetry and centralization of scout-view function in CBCT
Authors: Vilela Danúsia da Silva , Manhães Júnior Luiz Roberto Coutinho , Nascimento Monikelly do Carmo Chagas , Oenning Anne Caroline Costa , Junqueira José Luiz Cintra , Martinez Elizabeth Ferreira
Published: August 2022

Abstract This study evaluated the centralization of the region of interest (ROI) in acquisition of the CBCT images, when the freely positionable scout-view (SV) function is applied. Additionally, the dosimetry of the acquired images was assessed in the SV function alone as well as in complete tomographic image in two different fields of view (FOV) (50x50 and 78x150mm). A three-location device was created to accommodate the dosimeters and the specimens, in the right, middle and left location during image acquisition. For dose assessment, thermoluminescent dosimeters were irradiated within the FOV and analyzed in a portable reader. For ROI evaluation, three specimens of gutta-percha stick were placed on the same device and the CT scans were acquired (CBCT OP 300 Maxio device, 90kV, 13mA, 85 µm voxel size, FOV of 50X50mm), with and without the SV, in three positions (3-9, 1-7 and 5-11 o’clock), simulating different regions of the mouth. Two image evaluations were performed, an objective and subjective. There was a slight percentage increase (1.36% to 1.40%) of the radiation dose with the use of SV. The distances were significantly greater in the images acquired without SV (p < 0.05). Every image obtained with SV was classified as being at the FOV’s center. In conclusion, the results demonstrated that SVs function is effective to centralize the ROI in the FOV, increasing the scan precision and avoiding repetitions due to positioning errors.
Temporomandibular disorder in construction workers associated with ANKK1 and DRD2 genes
Authors: Baratto Samantha Schaffer Pugsley , Meger Michelle Nascimento , Camargo Vânia , Nolasco Gisele Maria Correr , Mattos Natanael Henrique Ribeiro , Roskamp Liliane , Stechman-Neto José , Madalena Isabela Ribeiro , Küchler Erika Calvano , Baratto-Filho Flares
Published: August 2022

Abstract The study aimed to explore the influence of genetic polymorphisms in ANKK1 and DRD2 on the signs and symptoms of temporomandibular disorder (TMD) in construction workers. This cross-sectional study included only male subjects. All construction workers were healthy and over 18 years age. Illiterate workers and functionally illiterate workers were excluded. The diagnosis of TMD was established according to the Research Diagnostic Criteria for TMD (RDC/TMD). Genomic DNA was used to evaluate the genetic polymorphisms ANKK1 (rs1800497) and DRD2 (rs6275; rs6276) using Real-Time PCR. Chi-square or Fisher exact tests were used to evaluate genotypes and allele distribution among the studied phenotypes. The established alpha of this study was 5%. The sample included a total of 115 patients. The age of the patients ranged from 19 to 70 years (mean age 38.2; standard deviation 11.7). Chronic pain (87.7%), disc displacement (38.2%), and joint inflammation (26.9%) were the most frequently observed signs and symptoms. The genetic polymorphism rs6276 in DRD2 was associated with chronic pain (p=0.033). In conclusion, our study suggests that genetic polymorphisms in DRD2 and ANKK1 may influence TMD signs and symptoms in a group of male construction workers.