bluuebunny/crossref_metadata_2025 huggingface dataset:
Predicting total electron content in ionosphere using vector autoregression model during geomagnetic storm
Authors: Iyer Sumitra , Mahajan Alka
Published: August 2021

The ionospheric total electron content (TEC) severely impacts the positional accuracy of a single frequency Global Positioning System (GPS) receiver at the equatorial latitudes. The ionosphere causes a frequency-dependent group delay in the GPS-ranging signals, which reduces the receiver’s accuracy. Further, the variations in TEC due to various space weather phenomena make the ionosphere’s behaviour nonhomogeneous and complex. Hence, developing an accurate forecast model that can track the dynamic behaviour of the ionosphere remains a challenge. However, advances in emerging data-driven algorithms have been found helpful in tracking non-stationary behavior in TEC. These models help forecast the delays in advance. The multivariate Vector Autoregression model (VAR) predicts the Ionospheric TEC in the proposed model. The prediction model uses input data compiled in real-time from the lag values of incoming TEC data and features extracted from TEC. The TEC is predicted in real-time and tested for different prediction intervals. The metrics – Mean Percentage Error (MAPE), Mean Absolute Error (MAE), and Root Mean Square Error (RMSE) are used for testing and validating the accuracy of the model statistically. Testing the predicted output accuracy is also done with the dynamic time warping (DTW) algorithm by comparing it with the actual value obtained from the dual-frequency receiver. The model is tested for storm days of the year 2015 for Bangalore and Hyderabad stations and found to be reliable and accurate. A prediction interval of twenty-minute shows the highest accuracy with an error within 10 TECU for all the storm days.
Finitely generated subgroups and Chabauty topology in totally disconnected locally compact groups
Authors: Hamrouni Hatem , Kammoun Yousra
Published: August 2021

For a locally compact group 𝐺, we writeS⁢U⁢B⁢(G){\mathcal{SUB}}(G)for the space of closed subgroups of 𝐺 endowed with the Chabauty topology. For any positive integer 𝑛, we associate to 𝐺 the functionδG,n\delta_{G,n}fromGnG^{n}toS⁢U⁢B⁢(G){\mathcal{SUB}}(G)defined by

δG,n⁢(g1,…,gn)=gp¯⁢(g1,…,gn),\delta_{G,n}(g_{1},\ldots,g_{n})=\overline{\mathrm{gp}}(g_{1},\ldots,g_{n}),

wheregp¯⁢(g1,…,gn)\overline{\mathrm{gp}}(g_{1},\ldots,g_{n})denotes the closed subgroup topologically generated byg1,…,gng_{1},\ldots,g_{n}. It would be interesting to know for which groups 𝐺 the functionδG,n\delta_{G,n}is continuous for every 𝑛. Let[HW][\mathtt{HW}]be the class of such groups. Some interesting properties of the class[HW][\mathtt{HW}]are established. In particular, we prove that[HW][\mathtt{HW}]is properly included in the class of totally disconnected locally compact groups. The class of totally disconnected locally compact locally pronilpotent groups is included in[HW][\mathtt{HW}]. Also, we give an example of a solvable totally disconnected locally compact group not contained in[HW][\mathtt{HW}].
Numerical study of highly efficient tin-based perovskite solar cell with MoS2 hole transport layer
Authors: Islam Muhammad Shafiqul , Rahman Sabrina , Sunny Adil , Haque Md. Ashfaqul , Mian Md. Suruz , Ahmed Sheikh Rashel Al
Published: August 2021

The present work investigates a tin-based highly efficient perovskite solar cell (PSC) by a solar cell capacitance simulator in one dimension. Molybdenum disulfide is introduced as hole transport layer in the proposed solar cell device structure. The photovoltaic performances of the proposed solar cell are investigated by varying thickness, doping concentration, and bulk defect density of various layers. Furthermore, the operating temperature and the series and shunt resistances are analyzed systematically. A higher conversion efficiency of 25.99% is obtained at the absorber thickness of 2000 nm. The optimum doping density of 1017 cm−3 is estimated for the absorber, electron transport layer (ETL), and hole transport layer (HTL), respectively. The optimum thicknesses of 50 nm, 1000 nm, and 60 nm are also found for the titanium dioxide as ETL, methylammonium tin triiodide (CH3NH3SnI3) as absorber layer, and molybdenum disulfide as HTL, respectively. The efficiency of the proposed lead-free CH3NH3SnI3-based solar cell with the alternative molybdenum disulfide HTL is calculated to be 24.65% with open-circuit voltage of 0.89 V, short-circuit current density of 34.04 mA/cm2, and fill-factor of 81.46% for the optimum parameters of all layers. These findings would contribute to fabricate low-cost, non-toxic, stable, and durable lead-free PSCs for the next generation.
Exodus: Die biblische Überlieferung und ihre historischen Hintergründe in der neueren Forschungsdiskussion
Authors: Schmid Konrad
Published: August 2021

Die Exoduserzählung der Bibel ist die theologische Gründungslegende Israels: Seit dem Auszug aus Ägypten ist Israel Gottes Volk und nur ihm allein, und keinen irdischen Mächten, verpflichtet. Dieser Aufsatz zeichnet die literarischen und theologischen Profile und die historischen Entstehungsgegebenheiten dieser Erzählung nach und summiert den neuesten Forschungsstand der Bibelwissenschaft.
Exodus and liberation theology
Authors: Westphal Euler R.
Published: August 2021

Die Befreiungstheologie entstand als Antwort auf die Strukturen der politischen, sozialen und kulturellen Unterdrückung in Lateinamerika. Die Befreiungstheologie formulierte als eine Art historischer Imperativ, dass der christliche Glaube keine Unterdrückungen erzeugen darf. Im Gegenteil: Der christliche Glaube muss Mechanismen zur Überwindung von Unterdrückung fördern. Entsprechend ist die Option für die Armen der Ausgangspunkt dieser Theologie. Das Buch Exodus ist dabei ein Schlüssel, um die Verbindung von theologischem Denken und gemeindlicher Praxis in den Blick zu nehmen.
Studying Configurations of Psychopathic Traits: Exploring the Viability of Psychopathic Personality in Early Childhood
Authors: López-Romero Laura , Romero Estrella , Salekin Randall T. , Andershed Henrik , Colins Olivier F.
Published: August 2021

The idea that very young children can manifest a constellation of personality traits that looks like psychopathy has rarely been explored. To fill this void, data from 2,247 children, aged 3–6 years (M = 4.25; SD = 0.91), from the Estudio Longitudinal para una Infancia Saludable (ELISA) were utilized. Parents and teachers completed questionnaires at baseline and at 1-year follow-up. Using three parent-rated psychopathy dimensions as indicators, the authors conducted latent profile analysis and arrived at five latent classes: Control (39.2%), Impulsive-Need for Stimulation (34.8%), Grandiose-Deceitful (16.5%), Callous-Unemotional (6.2%), and Putative Psychopathic Personality (PP, 3.3%). Children in the PP class, overall, engaged in higher levels of concurrent, future, and stable conduct problems and reactive and proactive aggression, and lower levels of prosocial behavior, as rated by parents or teachers. Findings also revealed meaningful differences between the remaining four classes. Person-oriented analyses seem to offer a fruitful avenue to identify 3-to 6-year-olds who exhibit a putative psychopathic personality and are at risk for future maladjustment.
SINIF III ORTOGNATİK CERRAHİ HASTALARINDA YUMUŞAK DOKU VE HAVA YOLU DEĞİŞİMLERİNİN DEĞERLENDİRİLMESİ
Authors: ŞEKER Elif Dilara , BALTACI Rabianur , POLAT Melike , YÜCESOY Türker , KURT Gökmen
Published: August 2021

Amaç: : Kombine ortodontik tedavi ve ortognatik cerrahi yumuşak dokularda ve havayolunda değişikliklere neden olmakta olup, ameliyat sonrası oluşacak değişimlerin öngörülmesi tedavi planlaması açısından önemlidir. Bu çalışmanın amacı sınıf III ortognatik cerrahi geçiren hastaların sert doku, yumuşak doku ve havayolu değişimlerinin incelenmesidir.Gereç ve Yöntemler: Bu retrospektif çalışmaya, 18 adet sınıf III hastanın pre-operatif ve post-operatif lateral sefalometrik kayıtları dahil edilmiştir. Çalışmaya dahil edilen hastalarda maksiller gömme ve ilerletme, mandibular geri alma işlemleri uygulanmıştır. Hastalardan cerrahiden hemen önce(T1) ve cerrahiden en az 6 ay sonra(T2) alınan lateral sefalometrik radyografiler üzerinde yumuşak doku ölçümleri Dolphin programıyla, havayolu ölçümleri ise Planmeca Romexis yazılımıyla yapılmıştır. Elde edilen verilerin dağılımı Shapiro Wilk Testi ile incelenmiş olup, T1 ve T2 döneminde elde edilen normal dağılım gösteren verilerin karşılaştırmaları için Paired t-test, normal dağılım göstermeyen verilerin karşılaştırmaları için ise Wilcoxon testi kullanılmıştır.Bulgular: Hastaların T1 ve T2 dönemlerinde elde edilen verileri karşılaştırıldığında yumuşak dokuda Sn'-LLS/LLS-Me' değerinde ve E düzlemi-alt dudak mesafesinde istatistiksel olarak anlamlı artış, E düzlemi-üst dudak mesafesinde olarak anlamlı azalma gözlenmiştir. Diğer yumuşak doku parametrelerinde farklılık gözlenmemiştir. Sert doku değerlendirmesinde, SNA°, ANB° değerinde anlamlı artış, SN-GoGn° açısında anlamlı azalma gözlenmiştir. Havayolu değerlendirmelerinde V-LPW değerinde artış meydana gelirken diğer parametrelerde anlamlı fark bulunamamıştır.Sonuçlar: Literatürde ortognatik cerrahi sonrası yumuşak doku ve havayolu değişimlerini inceleyen çalışmaların retrospektif karakteri, yöntemlerin standart olmaması ve uygulanan cerrahi hareket miktarının geniş bir aralıkta değişmesi nedeniyle kanıta dayalı sonuçlar çıkarmak zordur. Bununla birlikte kombine ortodontik tedavi ve ortognatik cerrahi yumuşak doku ve hava yolu üzerinde estetik ve fonksiyon bakımından olumlu etkileri vardır.Anahtar Kelimeler: Ortodonti, Ortognatik cerrahi, Angle Sınıf III, Sefalometri
TRANSLÜSENSİ ÖZELLİĞİNİN POLİSAJ UYGULANAN KOMPOZİT REZİNLERDE CIELAB VE CIEDE RENK SİSTEMLERİNE GÖRE KARŞILAŞTIRILMASI
Authors: FİDAN Muhammet , DERELİ Zeynep
Published: August 2021

AMAÇ: Bu in vitro çalışmanın amacı, iki farklı polisaj sistemi uygulanan üç farklı kompozit rezinin iki farklı renk sistemine göre termal döngü işlemine tabii tutularak translusensi değerlerini karşılaştırmaktır.
GEREÇ ve YÖNTEMLER: 60 adet disk şeklindeki kompozit materyaller(Tetric N-Ceram, Escom100 , Filtek 3M-ESPE Bulk-fill) üç gruba ayrıldı(n=20) ve her gruptaki örnekler iki polisaj sistemine göre alt gruplara ayrıldı(n=10). Translüsensi değerleri termal döngü önce ve sonrasında(10.000 döngü), CIELAB(L*a*b) ve CIEDE 2000 renk sistemlerine göre ölçümler yapılarak tespit edildi. Elde edilen verileri karşılaştırmak için üç yönlü varyas analizi(ANOVA) ve Bonferroni testinden yararlanıldı. Renk sistemleri arasındaki ilişkinin incelenmesi için Pearson korelasyon analizi kullanıldı. Tüm analizlerde anlamlılık düzeyi p<0,05 olarak belirlendi.
BULGULAR: Kompozit rezin materyallere ait translüsensi değerleri karşılaştırıldığında gruplar arasında anlamlı farklılıklar elde edildi (p<0.05). Bulgulara göre translüsensi değeri en fazla olan kompozit materyal Escom100 iken en az olan materyalin ise 3M-ESPE Bulk-Fill olduğu tespit edildi ve istatistiksel olarak anlamlı fark bulundu (p<0.05). CIELAB(L*a*b) ve CIEDE 2000 renk sistemleri arasında istatistiksel olarak anlamlı bir farklılık bulundu ve pozitif bir korelasyonun olduğu tespit edildi (p<0.05). Polisaj sistemlerinin renk sistemlerine göre termal döngü öncesinde kompozit rezinlere etkileri benzerdir. Termal döngü sonrasında polisaj tekniklerinin renk sistemlerine etkisi istatistiksel olarak anlamlı bulunmuştur (p<0,05).
SONUÇ: Kompozit materyaller translusensi değerleri arasında farklılıklar göstermektedir. CIELAB(L*a*b) ve CIEDE 2000 renk sistemlerinin translüsensi değişim ölçümlerinde istatistiksel olarak anlamlı bir uyum olduğu tespit edilmiştir. Dişe en yakın estetiği sağlamak amacıyla hem uygulanan polisaj sistemlerinin hem de kompozit rezinlerin translüsensi özelliğinin dikkate alınması gerekmektedir.
Nutzungsmotive und Medienrepertoires im Musikstreaming
Authors: Janson Timo , Emes Jutta
Published: August 2021

Musikstreaming verändert die Medienwelt. Die Musikindustrie erwirtschaftet mittlerweile mehr als die Hälfte ihres Umsatzes über Streamingdienste. Streaming als neuer Kanal ermöglicht datengetriebenes Marketing mit Auswirkungen auf den Entstehungsprozess von Musik und das Musikprodukt. Algorithmenbasiert werden Nutzern neue Songs und Playlists vorgeschlagen, die in der Regel ihrem bisherigen Musikrepertoire und präferierten Genre ähneln. Während Hörempfehlungen somit verhaltensbasiert generiert werden, stellt sich aus Sicht der Musikindustrie und insbesondere der Künstler die Frage nach den Motiven der Musiknutzung über Streamingdienste. Vor diesem Hintergrund werden in der vorliegenden Studie Nutzungsmotive und Funktionen des Musikmedienformats Streaming im Kontext der individuellen Medienrepertoires junger Erwachsener analysiert sowie unterschiedliche Nutzergruppen bestimmt. Hierzu wird auf Grundlage des Uses-and-Gratifications-Ansatzes (Nutzen- und Belohnungsforschung) eine umfassende Motivskala entwickelt. Im Rahmen einer quantitativen empirischen Studie werden junge Musik-Streaming-Nutzer (im Alter von 16 bis 34 Jahren, n=196) zu Nutzungsmotiven und Medienrepertoires befragt und die Ergebnisse multivariat ausgewertet. Mittels einer Hauptkomponentenanalyse lassen sich neun distinkte Nutzungsmotiv-Komponenten identifizieren. Eine darauf aufbauende Clusteranalyse führt schließlich zu fünf unterschiedlichen Nutzungsmotivtypen, die Rückschlüsse für Theorie und Unternehmenspraxis in der digitalen Musikindustrie zulassen.
No Risk - More Fun? The Influence of Shopping Companions on Adolescents' Risk Perception and Hedonism
Authors: Wenzel Stefanie , Benkenstein Martin
Published: August 2021

Increasing autonomy in purchasing decisions within adolescence leads to a high degree of uncertainty. Previous research has revealed that assistance to minimizing consumer risk has been identified as one of the predominant motives for shopping with a companion. Even though accompanied shopping is a significant characteristic of adolescent consumer behaviour, only a few studies have addressed this topic so far. We conduct five studies to address this issue. Two laboratory studies and three field studies demonstrate that a shopping companion does not reduce adolescents’ perceived risk. Furthermore, this finding applies not only to teenagers, but also to adults. Based on these results, other factors and influences that determine shopping together are examined, as is their actual implementation. Two field studies show a positive effect of a shopping companion on adolescents’ consumer experience. Accompanied consumers enjoy shopping much more than solo shoppers, which mediates the relationship between shopping situation (solo vs. With a companion) and shopping experience satisfaction.
A mathematical view towards improving undergraduate student performance and mitigating dropout risks
Authors: Zhang Hong , Apeanti Wilson Osafo , Akuamoah Saviour Worlanyo , Yaro David , Georgescu Paul
Published: August 2021

In this paper, we assess the relevance of social and cognitive factors such as self-efficacy, locus of control and exposure to negative social influence in relation to undergraduate student dropout. To this purpose, we analyze a compartmental model involving a system of nonlinear ODEs, which is loosely based upon the SIR model of mathematical epidemiology and describes the academic performance of the student population. We examine threshold values that govern the stability of the equilibria and can be viewed as target values to be reached in order to alleviate undergraduate students dropout. A backward bifurcation is observed to occur, analytically and numerically, provided that certain conditions are satisfied.

A sensitivity analysis is then performed to find how the threshold values respond to changes in the parameters, a procedure for estimating these parameters being also proposed. Concrete values are then computed using survey data from a Ghanaian university. The impact of parameter variation upon the dynamics of the system, particularly on certain population sizes and on threshold values, is also numerically illustrated. Our findings are then interpreted from a social cognitive perspective, realistic policy changes being proposed along with appropriate teaching and coaching strategies.
The speckled ground squirrel (Spermophilus suslicus) in Belarus: new localities, old threats, and prospects of conservation
Authors:   Brest regional branch of the NGO ", Abramchuk Andrey ,   Ahova ptushak Batskaoshchyny",   (Brest, Republic of Belarus), Shokalo Sergey ,   Brest regional branch of the NGO "Ahova ptushak Batskaoshchyny" (Brest, Republic of Belarus), Yankevich Yuriy ,   Brest regional branch of the NGO "Ahova ptushak Batskaoshchyny" (Brest, Republic of Belarus)
Published: August 2021

The study was carried out as part of the project "Superrodent" and is devoted to the description of new record localities of the spotted ground squirrel (Spermophilus suslicus s. l.) discovered by the authors during 2019–2020. It is one of the rarest species of rodents and mammals in the fauna of Belarus in general. This species suffers from anthropogenic changes in the environment and its agricultural development and to ensure its protection it is listed in a number of ‘red lists’, including the IUCN Red List and the Red Book of the Republic of Belarus (since 2015). The search for ground squirrel habitats was carried out in two stages. The first included the analysis of the literature on already known localities and biotope preferences, including cartographic data to identify promising areas to search for. The second stage provides a direct survey of prospective sites, their photo documentation and a detailed description. In total, nine new habitats of the species were identified within four administrative districts of Minsk Oblast of Belarus: Nesvizh Raion (4), Stowbtsy Raion (1), Baranivka Raion (1) and Kapyl Raion (2). In addition, an inspection of the sites previously identified by the authors revealed that some of them have already disappeared or are in critical state, the reason for which is primarily the land ploughing. In fact, today there are only six viable suslik settlements in Belarus. All of them are confined to elevated areas of the Kopyl ridge, which is located in the northern part of the Continental biogeographic region. Most of the surviving colonies are not large and consist of a few dozen to 150 living burrows. The number of the only large colony (Yushevichi) is estimated at 10 to 11 thousand individuals. All other inhabited colonies are located at a distance as far as 6 km from the Yushevichi colony. In other regions of Belarus, despite searches, ground squirrels are currently not found. The key threats to the species' existence are the ploughing of colonies and the overgrowth of tall grasses and trees and shrubs. In our opinion, for the long-term preservation of the species in the country, it is necessary to establish an appropriate protection regime (management), as well as the implementation of comprehensive monitoring: monitoring of threats, successions of plant communities, and the state of ground squirrel populations. Suggestions for protection and further monitoring of locations are given. Among other initiatives, the authors sent proposals to local authorities on granting protection status to areas with settlements of ground squirrels.
The current state of the golden jackal population in the Lower Dnister National Nature Park
Authors:   Lower Dnister National Nature Park (Odessa, Ukraine), Rozhenko Mykola
Published: August 2021

With the advent of the golden jackal in the Lower Dnister, certain changes have taken place in natural complexes, which are primarily related to the impact of the new species on the local fauna. Under such conditions, the number of jackals in certain areas, the spatial structure and location of separate packs are important information for the development of measures aimed at maintaining an optimal abundance of this species. Given the active impact of wildlife on natural systems, there are a number of both biological and purely social problems that need to be addressed. The effectiveness of solving such problems directly depends on the level of study of various aspects of biology and ecology of jackals. In addition, knowledge of the current state of the Dnister jackal population allows timely and effective response to new environmental challenges, which are associated with an increase in the abundance of new species and in its impact on the native mammal fauna. The results of the research indicate a certain competition of the jackal with other species of predatory mammals, in particular the fox and the raccoon dog. Thus, within the territories where the study was carried out, with the appearance of the jackal at the lower course of the Dnister, the red fox was not observed at all and the number of raccoon dogs decreased significantly. Habitats of separate jackal groups within the Lower Dnister National Nature Park have been identified and their total abundance has been established. The dynamics of settlement by the species of the Lower Dnister area is analysed, the conservatism of the species in relation to the residential areas is indicated. It has been established that in some parts of the park, in particular on the northern bank of the Dnister Estuary, the density of animals is about 12 individuals per 1000 hectares, which significantly exceeds the permissible sanitary and epidemiological standards. At the same time, in some parts of the floodplains of the Lower Dnister, density exceeds 0.5 individuals per 1000 ha, which indicates a complex spatial distribution of separate packs and groups of jackals. Mapping of the number of jackals in the park showed that groups far from the estuary are smaller in number (6–14 individuals), whereas groups near the estuary are more abundant (13–20 individuals).
High accuracy AC current sources calibration by single junction thermal converters at INM
Authors: Hernández Prada Carlos Fernando , Sáchica Avellaneda Mauricio , Martínez lópez Alexander
Published: August 2021

The National Metrology Institute of Colombia (INM) uses high accuracy calibrators (such as Fluke 5720A/5730A) as AC current reference standards. We describe the implementation at INM of AC-DC current transfer standards by single junction thermal converters (SJTC) to improve the accuracy of AC measurements and give traceability to the International System of Units (SI) within the country. We describe the measurement model, present the uncertainty budget estimation accordingly to the Guide to the Expression of Uncertainty in Measurement (GUM) and analyze the effect of temperature and electrostatic on measurements. Expanded uncertainties between 68 μA/A and 2.6 mA/A were obtained for the calibration of high accuracy calibrators and transconductance amplifiers for currents from 5 mA to 20 A (40 Hz to 5 kHz). The obtained measurement results are compatible with calibration results from the National Metrology Institutes like Centro Nacional de Metrología from Mexico (CENAM) and Accredited International Laboratories like Fluke.
Characterization Physico-chemical and mechanical of 4 vegetable fibers used as artisanal raw materials in the Department of Nariño
Authors: De la Cruz Velasco Laura , Chamorro Mejía Juliana , Cordoba-Cely Carlos
Published: August 2021

Nowadays there is very little information about the properties of the main vegetable fibers used in artisanal production in southern Colombia. The present comparative study analyzes the physical-chemical and mechanical properties of Fique (Furcraea macrophylla), Tetera (Stromanthe stromathoides or Stromanthe jacquinii), Totora (Schoenoplectus californicus) and Iraca or Toquilla Palm (Carludovica palmata), with the intention of identifying its strengths and weaknesses like an artisan raw material. The study found that fibers with higher elasticity such as Fique can be used for items such as clothing, while stronger fibers such as Tetera can be used to create items such as baskets that require more resistance to weight and rigidity. It was also found that Iraca and Totora could be better applied in the textile industry, and that the high moisture content in all fibers can affect their technological characteristics and the quality life cycle of artisan products.
A Hesitant Fuzzy TOPSIS model to supplier performance evaluation
Authors: Lima Junior Francisco Rodrigues , Hsiao Michael
Published: August 2021

Supplier performance evaluation is a decision-making problem that involves quantitative and qualitative metrics. Although several models that allow the use of linguistic terms such as "low" and "high" to evaluate suppliers, none of them enables the application of linguistic expressions, which is especially useful when decision makers hesitates to express their evaluations. This study proposes a model based on the Hesitant Fuzzy TOPSIS method to support the supplier performance evaluation. A pilot application was carried out in an automotive company considering 8 suppliers and 10 criteria. When compared to previous similar approaches, the proposed model presented the following advantages: it enables the use of linguistic expressions to assess the supplier performance in each criterion; it groups suppliers with similar levels of performance to develop appropriate management actions; and does not limit the number of criteria and suppliers evaluated.
Generalization of the pedal concept in bidimensional spaces. Application to the limaçon of Pascal
Authors: Sánchez-Ramos Irene , Meseguer-Garrido Fernando , Aliaga Maraver José Juan , Raposo Grau Javier Francisco
Published: August 2021

The concept of a pedal curve is used in geometry as a generation method for a multitude of curves. The definition of a pedal curve is linked to the concept of minimal distance. However, an interesting distinction can be made for ℝ2. In this space, the pedal curve of another curve C is defined as the locus of the foot of the perpendicular from the pedal point P to the tangent to the curve. This allows the generalization of the definition of the pedal curve for any given angle that is not 90º.In this paper, we use the generalization of the pedal curve to describe a different method to generate a limaçon of Pascal, which can be seen as a singular case of the locus generation method and is not well described in the literature. Some additional properties that can be deduced from these definitions are also described.
Exergy use review of wastewater study in Latin America
Authors: Ibagón Gutiérrez Lorena Maryeth
Published: August 2021

Exergy is the maximum useful work that can be obtained from a system in a specific state and environment. Exergy research has focused on energy fuels, although wastewater systems have not been studied in depth. This review explores the study and exergy use for wastewater systems in Latin America over the last 20 years. Chronological production, authors, citations, geographic origin, topic and purpose of publishing were examined through a documentary and bibliometric analysis. Exergy has started its development in Latin America, and it is led by a single school, there is evidence of a single author with 30% of citations and 25% of publications. Brazil, Colombia and Mexico produced 81% of publications, their main purpose is evaluating processes and by-products. The review concluded an incipient exergy development in wastewater systems in the region and exposed the need to stimulate research as a strategy to achieve the SDGs.
Detecting drainage pitfalls in open-pit mines and haul roads using UAV-photogrammetry
Authors: Dille Benevenuti Felipe , De Lemos Peroni Rodrigo
Published: August 2021

Open-pit mines generally have operational problems such as puddling and inappropriate water flow over haul roads, particularly if located in areas with high rainfall indices. These situations increase truck cycle times, promote rapid deterioration of haul-road wearing-course material, reduce productivity due to downtime and increase road maintenance. In addition, operational costs are raised as the frequency of truck maintenance and tire failures also increase. The use of a high-resolution three-dimensional elevation model, created based on Unmanned Aerial Vehicle (UAV) photogrammetry, has been shown to be an effective technique to detect anomalies in a fast and precise way. With the proposed approach, it is possible to diagnose haul-road conditions after rainfall or to anticipate the potential occurrence of such anomalies before they become a greater problem. This diagnosis can then be used to prioritize maintenance activities in open-pit mines. To describe the methodology, a case study is presented demonstrating and validating the results obtained.
Culturas negras, memórias e consciência histórica
Authors: Andrade Marcos Ferreira de , Brügger Silvia Maria Jardim , Palha Cássia Rita Louro
Published: August 2021

O artigo aborda as experiências do Laboratório de Imagem e Som, vinculado ao Departamento de Ciências Sociais da Universidade Federal de São João del-Rei, com base em suas conexões com a História Pública, tendo como destaque dois de seus projetos nucleares: o Memorial Clara Nunes e a Revolta dos escravos de Carrancas. As dimensões teórica e metodológica das narrativas de memórias e culturas negras são então matizadas, abordando as experiências dos projetos com as comunidades em questão. Nessa direção, é destacada a centralidade do compartilhamento e do desenvolvimento da consciência histórica no processo de interação com o público, seja no espaço de memória, seja junto das novas mídias digitais.
UERJ 70
Authors: De Pinto Carlos Eduardo Pinto , De Almeida Gonçalves Márcia , Nascimento Fernandes Rui Aniceto
Published: August 2021

O artigo analisa dois projetos propostos e realizados em 2019, por ocasião do início das comemorações dos setenta anos da Universidade do Estado do Rio de Janeiro (UERJ): a elaboração do livro 70 anos UERJ: 1950 – 2020 e a montagem de exposição temática ESQUELE7O – 70 anos de UERJ. As conexões dessas experiências com a História Pública foram situadas a partir de suas relações com a historiografia a e memória e  abordadas em três frentes: o caráter colaborativo da realização do livro e da mostra, que envolveram professores(as), discentes bolsistas, técnicos(as) administrativos(as) e, no caso da exposição, artistas, numa autoria compartilhada; a busca por construir uma história institucional que não fosse laudatória, escapando de narrar uma trajetória pautada pela sucessão de gestores e seus feitos, critério que norteou tanto a escrita dos textos, quanto a escolha das fotografias; e a assunção da Favela do Esqueleto como marco simbólico do compromisso da universidade no combate às injustiças sociais, possibilitando repensar a relação da universidade pública com os públicos que usufruem dos serviços emanados dessa instituição, e também com a paisagem urbana carioca.
História Pública na América Latina
Authors: Costa Adriane Vidal , Almeida Juniele Rabêlo de , Roca Lourdes
Published: August 2021

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Contribuições do PIBID Ciências da Natureza para o Letramento Científico na Educação Básica
Authors: Dinardi Ailton Jesus , Cunha Fernando Icaro Jorge , Verçosa João Victor Silveira , Leite Alan Pedroso
Published: August 2021

O presente trabalho registra a inserção dos bolsistas do PIBID Ciências da Natureza em duas escolas públicas de Uruguaiana-RS e tem por objetivo analisar a importância das Feiras e Clubes de Ciências enquanto espaços de letramento científico e de protagonismo dos sujeitos envolvidos.  Metodologicamente a pesquisa pode ser considerada uma pesquisa qualitativa que registra as ações e depoimentos no processo de organização de duas Feiras de Ciências (Escola A) e um Clube de Ciências (Escola B). Os resultados indicam que estes eventos são importantes espaços para a promoção do letramento científico e do protagonismo dos alunos. Os fundamentos que estruturam tal intervenção, buscam elucidar a importância de superar o Ensino de Ciências tradicional, obtendo como produto o letramento científico. Nas escolas supracitadas, a aplicação das Feiras e Clubes de Ciências, evidenciaram a riqueza de criatividade produzida pelos alunos, com a apresentação de diversos experimentos, discutidos de modo interdisciplinar entre todos os professores de Ciências da Natureza, demais áreas, bolsistas do PIBID, bem como, a supervisão e a coordenação do programa.
Pachychorioidealis kórképek
Authors: Gergely Róbert , Ecsedy Mónika , Kovács Illés , Papp András , Resch Miklós , Récsán Zsuzsa , Szabó Antal , Nagy Zoltán Zsolt
Published: August 2021

Összefoglaló. Célunk, hogy közleményünkben összefoglaljuk a
pachychorioidealis kórképekkel kapcsolatos ismereteket egy-egy saját esettel
illusztrálva. Az irodalmi adatok és a saját klinikai tapasztalatok alapján
összegeztük a pachychorioidealis kórképekkel kapcsolatos ismereteinket, az
alcsoportok kezelési lehetőségeiről összefoglaló folyamatábrát készítettünk. A
pachychorioidealis kórképekbe a következő betegségek tartoznak: centrális
serosus chorioretinopathia (CSCR), pachychorioidealis pigmentepitheliopathia
(PPE), pachychorioidealis neovasculopathia (PNV), polypoid chorioidealis
vasculopathia (PCV), peripapillaris pachychorioidealis syndroma (PPS), focalis
chorioideaexcavatio (FCE). A pachychorioidealis kórképek közös jellemzője a
chorioidea kvantitatív vagy kvalitatív eltérései, melyekhez gyakran subretinalis
folyadékgyülem társul. A betegségcsoportnak jelenleg nincs standard kezelési
protokollja; a többféle kezelési mód közül néhány hatékonyabbnak bizonyul, az
alcsoportok között azonban lényeges különbségek mutatkoznak. Összegezzük, hogy
melyik alcsoportban érdemes eplerenonetablettás kezeléssel,
mikropulzuslézer-kezeléssel, verteporfinos fotodinámiás kezeléssel (PDT) vagy
intravitrealis anti-VEGF-injekciós kezeléssel kezdeni. Orv Hetil. 2020; 162(20):
770–781.

Summary. The aim of this study is to present our knowledge about
pachychoroid diseases using case reports, literature review and our own clinical
experiences. A summary flow chart of treatment options for the subgroups was
prepared, too. Pachychoroid diseases include the following: central serous
chorioretinopathy (CSCR), pachychoroid pigment epitheliopathy (PPE),
pachychoroid neovasculopathy (PNV), polypoidal choroidal vasculopathy (PCV),
peripapillary pachychoroid syndrome (PPS), focal choroidal excavation (FCE). A
common feature of pachychoroid diseases is the quantitative or qualitative
abnormality of the choroidea, which is often associated with subretinal fluid
accumulation. The disease group does not currently have a standard treatment
protocol; some of the multiple treatments prove to be more effective, however,
there are significant differences between the subgroups. We summarize which
subgroup benefits from eplerenone tablet therapy, micropulse laser therapy,
verteporfin photodynamic therapy or intravitreal anti-VEGF injection therapy.
Orv Hetil. 2020; 162(20): 770–781.
Az alsó szemhéj pótlása tumoreltávolítás után
Authors: Sohajda Zoltán , Juhász Levente
Published: August 2021

Összefoglaló.
Bevezetés: A tumoreltávolítás miatt végzett teljes
alsószemhéj-pótlás összetett feladat lehet. A rekonstrukció célja a kielégítő
funkcionális és kozmetikai eredmény elérése. Célkitűzés: A
módosított Fricke-lebennyel végzett rekonstrukció tapasztalatainak bemutatása az
alsó szemhéj teljes hiánya esetén. Módszer: 2010. január és
2020. december között 7 beteg esetében tumoreltávolítás után végeztünk
alsószemhéj-rekonstrukciót módosított Fricke-lebennyel. A lebeny képzése a
halántéktájon történt. A betegek átlagéletkora 72,8 év volt. A szövettani
eredmény minden esetben basocellularis carcinoma volt. Az átlagos követési idő
1,9 év volt. Eredmények: Minden esetben jó funkcionális és
esztétikai eredményt értünk el. Lebenynecrosist, sebelégtelenséget nem
tapasztaltunk. A korai posztoperatív szakban átmeneti conjunctiva- és
szemhéjoedema volt tapasztalható. 3 beteg esetében könnyezés, 1 beteg esetében
érintő szőrök okozta szemszúródást észleltünk. Recidíva nem alakult ki a
követési idő alatt. Következtetés: Tapasztalataink szerint a
módosított Fricke-lebeny kiváló funkcionális és esztétikai eredményt ad a
tumoreltávolítás utáni teljes alsószemhéj-rekonstrukcióban. Orv Hetil. 2021;
162(29): 1180–1184.

Summary.
Introduction: The full-thickness lower eyelid reconstruction
after tumor removal can be a complex challenge. The aim of reconstruction is to
reach an appropriate functional and cosmetic result. Objective:
To present the retrospective analysis of the reconstruction’s experience with
the use of Fricke’s flap in the case of full-thickness lower eyelid defect.
Method: Between January 2010 and December 2020, in the case
of 7 patient’s after tumor excision on lower eyelid, reconstruction was
performed with a modified Fricke’s flap. The Fricke’s flap was fashioned in the
temple region. The patients’ average age was 72.8 years. The histological result
was basocellular carcinoma in every case. The average follow-up period was 1.9
years. Results: In all cases, good functional and cosmetic
result was detected. There were not any flap necrosis and wound dehiscence. In
the early postoperative period, temporary edema of the eyelid and conjunctiva
was detected. Epiphora occurred in the case of 3 patients and we observed eye
irritation caused by skin hair in the case of 1 patient. Tumor recurrence was
not detected during the follow-up period. Conclusion: In our
experience, the modified Fricke’s flap has excellent functional and aesthetic
results in the reconstruction after tumor removal on the lower eyelid. Orv
Hetil. 2021; 162(29): 1180–1184.
Közös felelősség a gyulladásos bélbetegség diagnosztikájában és kezelésében.
Authors: Dohos Dóra , Erős Adrienn , Szemes Kata , Sarlós Patrícia
Published: August 2021

Összefoglaló. Az idült betegségek, köztük a gyulladásos bélbetegség
kezelése összetett feladat, amely a megfelelő technikai feltételek mellett
naprakész szaktudással és tapasztalattal rendelkező egészségügyi személyzet
együttműködését igényli. Célunk a gyulladásos bélbetegség ellátásának célirányos
összegzése volt. Kiemelten foglalkoztunk a korai diagnosztika és szakorvoshoz
utalás kérdésével, a korszerű ellátáshoz szükséges, személyre szabott terápia és
a célértékre történő kezelés, valamint a biológiai terápiás centrumba utalás
szükségességével. Részleteztük továbbá a kompetens és felelősségteljes gondozás
ellátószintjeit, és bemutattuk az ellátásban együttműködő multidiszciplináris
csoport felépítését is. Az összefoglaló közleményhez a nemzetközi irodalmat és a
hazai terápiás protokollokat tekintettük át. A krónikus betegségek gondozásában
elengedhetetlen a társszakmák együttműködése. A betegség kezelésében fontos a
folyamatosan változó ajánlások, protokollok ismerete és a kompetenciaszintek
elfogadása a beteg megfelelő életminőségének elérése és a szövődmények
csökkentése céljából. Orv Hetil. 2021; 162(33): 1311–1317.

Summary. The treatment of chronic diseases, including inflammatory
bowel disease, is a complex task that requires the collaboration of health
professionals with up-to-date expertise and experience under the appropriate
technical conditions. Our aim was to systematically review the management of
inflammatory bowel disease. We focused on the issue of early diagnosis and
referral to a specialist, the need for personalized therapy and
“treat-to-target” concept, and the appropriate timing of referral to a
biological therapy center. The levels of competent and responsible care and the
structure of a multidisciplinary team were also discussed. For the article,
international and Hungarian therapeutic protocols and literature were reviewed.
The collaboration of disciplines is essential in the management of chronic
diseases. For disease management, it is critical to be up-to-date with changing
recommendations, protocols, and to adopt competency levels to achieve a
patient’s adequate quality of life and reduce disease complications. Orv Hetil.
2021; 162(33): 1311–1317.
SARS-CoV-2-fertőzés és COVID–19 Gaucher-kóros betegekben: a védőoltás javallata
Authors: Maródi László
Published: August 2021

Összefoglaló. Az új típusú koronavírus (SARS-CoV-2) okozta pandémia
kezdetén a szakmai közvélemény általános vélekedése a Gaucher-kóros betegek
fokozott érzékenységét vetítette elő, magas morbiditási és mortalitási
mutatókkal. Meglepő módon azonban az eddigi, nagyszámú betegen, az Egyesült
Államokban, Európában és Izraelben végzett klinikai tanulmányok azt mutatják,
hogy ezen súlyos anyagcsere-betegségben sem a fertőzésnek kitett betegek
morbiditási adatait, sem a ritkán kialakult fertőzések súlyosságát tekintve nem
áll fenn csökkent immunvédekezés a SARS-CoV-2-vel szemben. Ezen immunológiai és
infektológiai paradoxon lehetséges magyarázata, hogy a betegek makrofágjaiban és
más sejtjeiben felhalmozódó glükocerebrozid gyulladásos állapotot tart fenn,
amely hátrányos a kórokozó vírus intracelluláris túlélése szempontjából. A
közleményben összefoglaljuk a témakörben eddig megjelent tanulmányok adatait, az
általános prevencióval és a vakcinációval kapcsolatos ajánlásokat, és kitérünk
az 1-es típusú interferonok (IFNα és IFNω) közelmúltban megismert szerepére a
SARS-CoV-2-vel szembeni immunitásban. Orv Hetil. 2021; 162(24): 938–942.

Summary. At the start of the pandemic caused by the novel
coronavirus (SARS-CoV-2), the Gaucher disease community anticipated that
infection with this emerging viral pathogen would be associated with high
morbidity and mortality in individuals with this chronic metabolic disorder.
Surprisingly, however, preliminary studies suggest that Gaucher disease does not
confer a higher risk of severe, life-threatening effects of SARS-CoV-2
infection, and no severe cases have been reported in large cohorts of patients
from the United States, Europe and Israel. It is thought that the accumulation
of glucocerebroside in the cells of Gaucher patients may promote immune
tolerance rather than inflammation on exposure to SARS-CoV-2. We review here the
current concepts of Gaucher disease and SARS-CoV-2 infection, focusing
particularly on general prevention and vaccination. We also discuss the
susceptibility to COVID-19 of patients with inborn errors of type 1 interferon
(IFNα and IFNω) immunity. Orv Hetil. 2021; 162(24): 938–942.
PENYELESAIAN MASALAH TRANSPORTASI UNTUK MENCARI SOLUSI OPTIMAL DENGAN PENDEKATAN MINIMUM SPANNING TREE (MST) MENGGUNAKAN ALGORITMA KRUSKAL DAN ALGORITMA PRIM
Authors: Dili Yusufiani Nurlinawati
Published: August 2021

Penelitian ini membahas tentang penyelesaian masalah transportasi dengan pendekatan Minimum Spanning Tree (MST) menggunakan algoritma Kruskal dan algoritma Prim untuk mencari solusi optimal. Algoritma Kruskal dan algoritma Prim merupakan algoritma dalam teori graf untuk mencari Minimum Spanning Tree (MST). Langkah algoritma Kruskal yaitu mengurutkan biaya dari yang terkecil hingga terbesar. Selanjutnya, pilih biaya yang paling terkecil. Kemudian, lakukan perhitungan dengan melihat sumber persediaan dan permintaan di setiap tujuan sampai semuanya terpenuhi, sehingga terlihat bentuk Minimum Spanning Tree (MST) dari algoritma Kruskal. Sedangkan langkah algoritma Prim yaitu dengan memilih sembarang titik atau sumber. Selanjutnya, pilih active edge dengan biaya terkecil. Kemudian, lakukan perhitungan dengan melihat sumber persediaan dan permintaan di setiap tujuan sampai semuanya terpenuhi, sehingga terlihat bentuk Minimum Spanning Tree (MST) dari algoritma Prim. Bentuk dari Minimum Spanning Tree (MST) menghasilkan solusi yang optimal. Dari hasil penelitian ini, pendekatan Minimum Spanning Tree (MST) dengan algoritma Prim yang lebih unggul.
Interpretation of Agricultural Pest Problem Handling System in Usada Wisada Pari Scripture
Authors: Jayendra Putu Sabda , Ekasani Kadek Ayu , Saitya Ida Bagus Subrahmaniam , Saitya Ida Bagus Subrahmaniam , Mahendra Made Wahyu
Published: August 2021

The knowledge of cultivation and the methods of treating and solving pest problems naturally without neglecting the local culture has been an inseparable aspect of Balinese agricultural life, which is known for its irrigation system called subak. This study aims to examine agricultural scripture named Usada Wisada Pari from two perspectives. First, this study examines the types of pests and its countermeasure. Secondly, it is important to study the lexicon form of these pests. This study shows that the types of rice pests in the Usada Wisada Pari text are categorized into two types, namely animals and plants. The countermeasure consists of natural ritual elements from plants and incantations. Furthermore, this research also shows that all kinds of plague and agricultural pests, along with ways to overcome them, reflect the very strong Shivaistic teachings. All kinds of diseases, countermeasures and prevention are described as the authority of Lord Shiva as the god of destruction in the Hindu concept. It can be concluded that the scripture of Usada Wisada Pari is a text that provides knowledge about rice pest antidotes in an environmentally friendly and holistic manner because it involves natural and religious elements. This study is expected to contribute both to academics or future researchers as well as to the public. It is hoped that academics and researchers can use this present study as a source and expand as well as deepen the object of study based on ethnoagriculture. Meanwhile, the general public can increase their knowledge regarding alternative management of agricultural epidemics in synergy with nature and local wisdom.
Katekese Virtual kepada Korban Bencana Alam di Masa Pandemi Menurut Model Berteologi Kosuke Koyama
Authors: Adon Mathias Jebaru , Firmanto Antonius Denny
Published: August 2021

Currently, Indonesia is entering difficult phases because the Indonesian nation is not only dealing with the storm of the Covid-19 pandemic but also natural disasters. This disaster brought a traumatic experience for the victims. Healing for victims can indeed be done with a psychological approach, but strengthening faith is no less important. Based on this, the focus of research studies is on the role of religious institutions, particularly the Church, in handling victims of natural disasters. The role of the Church is seen in catechesis. In catechesis, the Church teaches the values of the gospel and confirms the faith of the people that the suffering experienced is not a curse from God. During a pandemic, catechetical work can be done by utilizing virtual spaces such as social media content. Social media is a means of proclaiming the faith that is easily accessible by the people. This kind of catechetical and theological method was initiated by Kosuke Koyama. According to Koyama, the right catechesis model must start from the concrete problems of the people. Based on this, this research study uses the literature study method. Literary sources were researched and analyzed so that a catechetical model was found that was appropriate to the social context of the Indonesian people who were being hit by natural disasters.
Penderitaan sebagai Jalan Mistik Menuju Kesatuan Hidup bersama Kristus: Belajar dari Perjalanan Paulus Ke Sorga (2 Korintus 12:1-10)
Authors: Panjaitan Firman
Published: August 2021

Suffering is the secret of human life. Generally, people view suffering as God's reaction to human sin. This view is corrected by Paul in 2 Corinthians 12: 1-10, which emphasizes that suffering is not God's punishment but God's way of maintaining human humility in facing life. By using the rhetorical critique method, which is a method that explores understanding by creating a single literary genre from many inter-textualities, both in biblical texts and extra-biblical texts, this researcher finds a message that suffering is actually a 'mystical path’ to experience encounter and union with God. In union with God, humans realize that they are part of life as a whole, so they must share and care for each other based on the understanding that all human beings are part of Divine life. Thus 2 Corinthians 12: 1-10 affirms that suffering is not a negative thing and needs to be complained about, but must be grateful for the understanding that this is the ‘mystical path’ of humans towards the unity of life with Christ and fellow humans.