bluuebunny/crossref_metadata_2025_split huggingface dataset:
The Role of Entrepreneurial Performance in Supporting Economic Development of Countries: An Empirical Approach
Authors: Rusu Valentina Diana , Roman Angela 
Published: August 2021

Abstract
Entrepreneurship is recognized as one of the factors stimulating economic growth and increasing economic competitiveness. In addition, the Europe 2020 Strategy has focused its attention on entrepreneurship as a key factor of economic growth, social progress, and employment. In this context, our study examines the role of entrepreneurial performance for sustaining the development of countries, focusing on a sample of European countries. We attempt to reveal if increasing entrepreneurial performance would have significant influence on improving the economic position of countries and their future economic development. Starting from the OECD-Eurostat Entrepreneurship Indicators Programme we use a set of entrepreneurial performance indicators as independent variables and examine to what extent they can influence competitiveness and economic growth, seen as dependent variables of the models. We focus on a period of 10 years (2008–2017) and we apply panel-data estimation techniques. Because the period considered includes the period of the last international financial crisis, we also include in our analysis a dummy variable. Our results emphasize that the changes in entrepreneurial performance play a significant role in enhancing national competitiveness and economic growth. Our findings contribute to the expansion of literature in the field by providing evidence on the correlation of indicators that measure entrepreneurial performance with national competitiveness and economic growth. Moreover, our findings point out the need of the policy makers to adopt measures and policies that help and stimulate entrepreneurs to become more performant because they can generate positive effects to the economy as a whole.
Predicting total electron content in ionosphere using vector autoregression model during geomagnetic storm
Authors: Iyer Sumitra , Mahajan Alka 
Published: August 2021

Abstract
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

AbstractFor 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 byδG,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

Abstract
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

Zusammenfassung
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

Zusammenfassung
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.
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
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.
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.
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.