bluuebunny/crossref_metadata_2025 huggingface dataset:
Los rostros políticos de los evangélicos en la Argentina reciente
Authors: Carbonelli Marcos
Published: March 2019

En este artículo analizamos los nuevos rostros políticos de los evangélicos en la Argentina reciente, haciendo foco en sus intervenciones en dos controversias públicas: la extensión de derechos sexuales y reproductivos y el proyecto de ley de cultos. Los argumentos están respaldados en la investigación cualitativa que sustentó nuestra tesis doctoral y en el diálogo con los principales antecedentes del campo. Mostraremos que la divergencia profunda en los posicionamientos evangélicos evidenció el quiebre de su constitución como movimiento social, al mismo tiempo que su creciente legitimación sociopolítica como minoría religiosa activa en el espacio público. También, identificaremos las múltiples alianzas entre actores evangélicos y católicos como una de las reconfiguraciones fundamentales en el campo político religioso argentino desde la recuperación democrática.
"Mä opin sitä kadulla kavereitten kanssa" - suomen kielen käyttöön ja oppimiseen liittyviä kategorisointeja maahanmuuttajanuorten haastattelupuheessa
Authors: Lilja Niina
Published: March 2019

Tarkastelen tässä artikkelissa haastatteluaineistoon pohjaten maahanmuuttajanuorten käsityksiä eli ajatuksia ja ideoita suomen kielen käyttämisestä ja oppimisesta. Kysyn, millaisia käsityksiä nuorilla on suomen kielestä, suomen kielen käytön ja oppimisen paikoista sekä kielen oppimisen prosessista. Analysoin aineistoani jäsenkategoria-analyysia soveltaen ja erittelen niitä ihmisiin ja paikkoihin liittyviä kategorioita, jotka jäsentävät maahanmuuttajanuorten haastattelupuhetta suomen kielestä ja kielen oppimisesta. Osoitan, että haastateltavien puheessa olennaiseksi nousee kaverin kategoria ja ensisijaisesti suomalaiset kaverit nähdään tärkeiksi oppimisen mahdollistajiksi. Kaverin kategoria nousee joissakin haastatteluissa keskeiseksi myös poissaolon kautta, ja suomalaisten kavereiden puuttuminen yhdistetään suoraan kielenkäyttötilanteiden vähyyteen. Paikkoihin liittyvistä kategorisoinneista tärkeäksi nousee vastakkainasettelu koulun ja sitä ympäröivän kieliyhteisön välillä. Näytän analyysissani, miten tämän vastakkainasettelun avulla jäsennetään suomen kielen käytön ja oppimisen paikkoja ja rakennetaan käsityksiä eri kielimuotojen arvostuksiin liittyen.
Implementasi Business Intelligence Menentukan Daerah Rawan Gempa Bumi di Indonesia dengan Fitur Geolokasi
Authors: Namora Jesi
Published: March 2019

Gempa bumi merupakan bencana alam yang dapat menimbulkan banyak kerusakan. Secara geografis, Indonesia terletak pada kawasan cincin api (ring of fire), yaitu lokasi yang sering mengalami bencana gempa bumi dan letusan gunung berapi. Badan Nasional Penanggulangan Bencana (BNPB) adalah Lembaga yang memiliki data tentang bencana yang terjadi di Indonesia dalam ukuran besar. Agar data tersebut dapat diolah menjadi informasi yang lebih bernilai, diperlukan aplikasi yang dapat memvisualisasikan data-data tersebut. Sehingga dapat menampilkan informasi berupa provinsi yang rawan bencana dan aman dari bencana khususnya gempa bumi. Penerapan business inteligence sangat cocok untuk kasus ini agar BNPB dapat mengelompokkan bencana khususnya gempa bumi di setiap provinsi yang ada di Indonesia untuk mempermudah masyarakat mendapat informasi bencana gempa bumi yang terjadi. Penelitian ini menggunakan salah satu aplikasi business inteligence yakni QlikView untuk dapat mengelompokkan bencana gempa bumi yang terjadi di setiap provinsi di Indonesia serta menampilkan visualisasinya pada peta menggunakan fitur geolokasi.
Sistem Pakar Untuk Mendiagnosa Gangguan Anxietas Dengan Menggunakan Teorema Bayes
Authors: Candra Reski Mai
Published: March 2019

Gangguan Anxietas atau gangguan kecemasan merupakan salah satu penyakit yang sering dijumpai didalam ilmu kejiwaan. Gangguan anxietas ini dimiliki oleh semua orang, baik dari bayi hingga orang yang sudah tua sekalipun. Beberapa orang masih banyak yang mengabaikan gangguan anxietas ini dikarenakan kurangnya informasi mengenai gangguan anxietas yang apabila dibiarkan secara terus-menerus akan berdampak negatif pada kehidupan mereka, seperti rutinitas hidup jadi terganggu, menurunkan prestasi akademik dan juga berdampak pada kualitas hidup serta kondisi psikologi orang tersebut. Sistem pakar ini akan mendiagnosa gangguan anxietas dengan cara menghitung jumlah nilai-nilai dari gejala yang dialami. Sistem pakar ini menggunakan Teorema Bayes untuk melakukan Implementasi dan pembuatan sistem menggunakan bahasa pemrograman PHP dan database MySQL. Pada pengujian Black Box tidak ditemukannya error didalam sistem dan telah sesuai dengan output. Sedangkan pada pengujian User Acceptence Test (UAT) terhadap 10 responden sistem berhasil menambah wawasan serta informasi kepada user. Perhitungan manual Teorema Bayes dan beberapa pertanyaan yang diberikan kepada pakar menunjukkan hasil yang sama terhadap sistem. Oleh karena itu, dapat disimpulkan bahwa sistem pakar untuk mendiagnosa gangguan anxietas ini layak untuk digunakan.
Professional Development- Differences in teachers' attitudes between online and traditional training courses
Authors: Wasserman Egoza , Migdal Ruth
Published: March 2019

The basic need for man to be constantly engaged in learning on the one hand and the technological revolution on the other hand lends itself to an interesting combination of change in the learning process. This change has not overlooked the teachers who have also undergone changes in their professional development at the Pisgah centers. The technology age has brought with it online learning. The purpose of this study is to examine the attitudes of the teachers training in the Pisgah centers in Israel on the differences between online and traditional training courses. This study was conducted using the quantitative method with 495 teachers participating. The study findings indicate four main areas related to teachers' attitudes. Effectiveness and application, environment, course assignments and attitudes towards ICT. Significant differences were found in the environment variable and the ICT variable between online and traditional training in favor of online training. In addition, a multi regression analysis found that the effectiveness of the course can be explained by the variables: environment, course assignments, and ICT.
What if online students take on the responsibility: Students’ cognitive presence and peer facilitation techniques
Authors: Chen Ye , Lei Jing , Cheng Jiaming
Published: March 2019

The purpose of this study was to investigate: (a) the characteristics of online students’ cognitive presence in a peer-facilitated discussion environment, and (b) the peer facilitation techniques that enhance cognitive presence development. In this study, we examined 738 discussion messages. Analytic methods included both qualitative and quantitative content analysis. The findings revealed that although cognitive presence was detected in most discussion messages, they aggregated at a lower level. The involvement of peer facilitators was found to correlate with students’ higher-level cognitive presence. In addition, we found that types of initiating questions asked by peer facilitators positively affected the level of cognitive presence. We also explored the facilitation techniques used by peer facilitators that aim to promote students’ cognitive presence.
African American Males Learning Online: Promoting Academic Achievement in Higher Education
Authors: Salvo Susan G , Welch Brett , Shelton Kaye
Published: March 2019

Online education is expanding within higher education. However, attrition rates for African American males enrolled in higher education in general, and in online courses specifically, is on the rise. Because the future of our nation depends on how well our educational institutions develop, nurture, and deploy talent, an investigation was conducted to identify factors that promoted online course completion among African American male undergraduate students. Ten males who successfully completed online courses were interviewed, and significant themes were identified. Factors that contributed to online course completion were financial assistance, prior academic achievement, previous information technology (IT) training, continuous academic enrollment, student selection of topics perceived as uncomplicated and less demanding or familiar due to sufficient prior knowledge, use of handheld digital devices, and a non-prejudicial learning environment. Based on these findings, recommendations are made that include strategies policymakers and educationists can implement to promote academic achievement and degree attainment among African American males in higher education.
Interculturality in Online Learning: Instructor and Student Accommodations
Authors: Sadykova Gulnara , Meskill Carla
Published: March 2019

As more distance education courses broaden their reach across borders, the chances of online classes being multicultural are high. This means that more often students may find themselves in courses designed for and by a host culture that differs from their own regarding its approach to teaching and learning. Compounding the difficulties inherent in a novel cultural environment and its unfamiliar forms of academic discourse are challenges represented by the medium itself. This year-long case study examines the experiences and reflections of a Chinese graduate student and her U.S. instructor; specifically the accommodations both made to mediate differences and mitigate these challenges. Analyses suggest that when both parties take differences into account and exercise thoughtful accommodations relative to both the challenges of the online medium and language socialization, positive learning experiences can result.
Re-examining the Construct Validity and Causal Relationships of Teaching, Cognitive and Social Presence in Community of Inquiry Framework
Authors: Dempsey Patrick , Zhang Jie
Published: March 2019

Despite the prevalence of research on the community of inquiry framework and its associated measurement instrument, more research is needed to re-evaluate the factor structure, study the effects of covariates or measurement invariance, and explore the relationships amongst the three presences. Results of this study indicated that (a) teaching, social, and cognitive presence are each multidimensional and higher-order constructs; (b) measurement invariance was fully achieved for gender and partially for age, ethnicity, discipline, and online experience; (c) structural relationships of the three main constructs—teaching presence, social presence, and cognitive presence—suggested potential psychometric adjustments. The teaching presence construct in particular should be reconstructed to appropriately reflect and measure the construct as conceptually defined—as a distribution of teaching responsibility and authority—as opposed to how it is currently operationalized in the community of inquiry instrument—as a centralization of responsibility and authority with the instructor.
Self-Determination: Motivational Profiles of Bachelor’s Degree Seeking Students at an Online, For-Profit University
Authors: Pugh Carol
Published: March 2019

Grounded in the self-determination theory, this exploratory quantitative study investigated motivational profiles of bachelor’s degree seeking students at an online, for-profit university.  Cluster analysis revealed two distinct motivational profiles (internally and externally regulated) of 158 students enrolled in a bachelor’s degree program.  The significant differences between the two profiles offers support for the multidimensional nature of motivation as argued by self-determination theory.  A chi-square test of independence revealed a significant association between motivational profile membership and gender.  No associations were found between motivational profile membership and age.  The results offer insights into the motivations of bachelor’s degree seeking students attending an online, for-profit university.  Over two-thirds of the students in this study exhibited high external forms of motivation.  It is recommended practitioners employ methods to increase autonomous forms of motivation in the online, for-profit educational setting.  Understanding student motivations to graduate may help administrators, curriculum designers, and instructors develop focused interventions and best practices that could be used to increase graduation rates.
Doctoral E-mentoring: Current Practices and Effective Strategies
Authors: Byrnes Jr. David James , Uribe-Flórez Lida J. , Trespalacios Jesús , Chilson Jodi
Published: March 2019

Effective mentoring has been the cornerstone of a successful doctoral experience. Traditional doctoral education uses an apprenticeship model for mentoring to help students learn what is required as an academic professional. However, online environments present unique challenges to creating and maintaining mentor-mentee relationships. Using keywords specific to e-mentoring and online graduate education, literature searches were conducted to isolate relevant research from the last decade. From this literature, it was possible to synthesize current practices in e-mentoring and identify effective strategies to use for doctoral students conducting research. Using Yob and Crawford (2012) framework, results were organized into the following six independent categories: Competence, Availability, Induction, Challenge, Communication, and Emotional Support. Other aspects that impact the mentoring relationship are also discussed.
Reflection in Learning
Authors: Chang Bo
Published: March 2019

This study explored the impact of reflection on learning in an online learning environment. Twenty-five students from four online courses participated in this research project. Reflection was purposefully designed and embedded in various assignments. Data were mainly collected from interviews and students’ different types of reflections. The inductive content analysis method was employed to analyze data. Five themes were generalized in terms of how reflection impacts learning: Increasing the depth of knowledge, identifying the areas which are missing or deficient, personalizing and contextualizing knowledge, providing comparative references in learning, and helping learners build structural connections in knowledge and social connections among learners. This study provides foundational ideas for designing reflective activities to promote students’ learning in an online learning environment.
Modeling of the operation of the reserve source of electric energy of railway traffic control devices
Authors: Osa Piotr , Wojciechowski Jerzy , Wójtowicz Marek , Osmolovskii Nikolai
Published: March 2019

The article presents issues related to the problem of modeling the work of a reserve source of electric energy for railway traffic control devices. The problems of srk devices and the construction and concept of powering them into electricity were outlined. The basic part presents a simulation model of the operation of a generator set, used as a reserve power source. Modifications of the model to work in the most important operating conditions are shown. The results of simulation calculations are presented.
Diagnostic station for a multibiometric system for a selected transport object
Authors: Paś Jacek
Published: March 2019

Multibiometric systems used in transport objects, in contradistinction to "ordinary" biometric systems, use several recognition techniques, e.g. fingerprint, iris, voice or face. Biometric devices are sometimes part of electronic security systems. These systems are currently installed in many transport facilities - stationary and non-stationary where there is a lot of personal traffic. These devices are most often used in extensive areas, airports, logistics bases or railway stations. The article presents issues concerning the diagnostic position for a biometric system which has in its structure several simple identification techniques.
Tests of a magnetorheological damper
Authors: Skalski Paweł
Published: March 2019

Paper showed the results of experimental tests of a magnetorheological damper prototype. The damper construction is protected in the Polish Patent Office. In the paper the solution of the damper, the test stand, and results of experiments are presented.
Modeling and simulation of charging and braking regimes of AC/AC powertrain of HEV vehicle
Authors: Dobrucký Branislav , Kaščák Slavomír , Praženica Michal , Drgoňa Peter
Published: March 2019

The paper deals with modeling and simulation of chosen operational modes of HEV vehicle with direct AC/AC transfer and five-phase IM traction motors. Such configuration yields smaller voltage drops com-pared with the serial AC/DC/AC converter and five-phase machines offer some inherent advantages over their three-phase counterparts. The advantages include reduced electromagnetic torque pulsation and also noise characteristics of the five-phase drives are better when compared with the three-phase ones. Charging and braking regimes were chosen as possible operational modes for modeling and analyses. The result of the simulation. carried out with using of Matlab/Simulink are given in the paper.
The usage of RFID technology using Big Data in logistics processess
Authors: Łukasik Zbigniew , Ulatowski Bartłomiej , Łukasik Łukasz
Published: March 2019

The following article shows how to use large data sets using logistic data using radio frequency identification (RFID) technology. First of all, the so-called RFID-Cuboids processors are introduced to create a data warehouse so that logistics data managed via RFID technology can be highly integrated in terms of specific logic and operations. Second, the tables are used to combine r data to increase information quality and reduce the data set volume.
Proposition of algorithm for detecting changes of course and speed of the tracked object
Authors: Mąka Marcin , Dramski Mariusz
Published: March 2019

The process of choosing a trajectory in a restricted area requires knowing not only the area itself, but also the current and future location of other objects moving within it. This issue is relatively simple in case when the objects being tracked do not change the direction of movement and speed. Often, however, the objects being tracked have a nuanced effect, which results in the necessity to correct the determined trajectory of the own object. Such information allows to minimize the risk of a possible collision. This is important both for security reasons and due to economic factors. This article proposes an algorithm for the detection of changes in the direction of motion and the speed of the object being tracked. The solutions proposed in the article are a development of previous studies, including the search for the optimal object route in a restricted area. The authors propose an algorithm for applications in decision support systems for sea navigation, but it can also be successfully used in other areas of transport.
Enhancing effectiveness of use of the rolling stock through route optimisation
Authors: Mezitis Mareks , Muratbek Arpabekov , Sansyzbayeva Zura , Assiltayev Alimzhan
Published: March 2019

The article deals with issues of enhancing efficient use of the rolling stock of urban passenger transport through route optimisation. The authors offer to upgrade urban route network opt for: optimisation of routing system. In order to streamline passenger transport performance, the authors propose to calculate transport route schemes by applying economically mathematical methods of planning.
Working time of a truck- theory, and practice
Authors: Ambrożkiewicz Bartłomiej , Przystupa Krzysztof , Nawłatyna Beata
Published: March 2019

The aim of the article is to show practical and theoretical issues related to the driver's working time in everyday practice. The article lists legal acts regulating the working time of professional drivers. Rules regarding this matter were discussed. Examples of devices designed to record driver activity are shown. The research part includes the results of the analysis of an anonymous questionnaire concerning violation of regulations in the field of driver's working hours.
Development of logistics centers on the example of the city and commune of Radom
Authors: Bandrowska-Kaim Agata , Dębowska-Mróz Marzenna
Published: March 2019

The 21st century presents big challenges for enterprises that are caused by high customer requirements regarding the quality of services. Logistics centers are only a partial fulfilment of the client's expectations. The key password that is implemented is the "7W" principle. The article also presents the basic issues concerning the development of centers on the example of the city of Radom.
Cooperation of multiple autonomous robots and analysis of their swarm behavior
Authors: Czejdo Bogdan , Daszczuk Wiktor , Grabski Waldemar , Bhattacharya Sambit
Published: March 2019

In this paper, we extended previous studies of cooperating autonomous robots to include situations when environmental changes and changes in the number of robots in the swarm can affect the efficiency to execute tasks assigned to the swarm of robots. We have presented a novel approach based on partition of the robot behaviour. The sub-diagrams describing sub-routs allowed us to model advanced interactions between autonomous robots using limited number of state combinations avoiding combinatorial explosion of reachability. We identified the systems for which we can ensure the correctness of robots interactions. New techniques were presented to verify and analyze combined robots’ behaviour. The partitioned diagrams allowed us to model advanced interactions between autonomous robots and detect irregularities such as deadlocks, lack of termination etc. The techniques were presented to verify and analyze combined robots’ behaviour using model checking approach. The described system, Dedan verifier, is still under development. In the near future, timed and probabilistic verification are planned..
Comparative analysis of selected plastic packaging
Authors: Nowotyńska Irena , Grabowska Gabriela , Zdeb Małgorzata
Published: March 2019

The article presents comparative analyses of selected plastic packaging (PE-HD, PET) taking into account the technical, promotional and ecological aspects. The technical aspect of the package has been examined by marking the properties of the packaging material during static stretching and by determining the material's resistance to high temperature in the shrink test. The determination of the aspect of the promotional and ecological value of the packaging was made by developing special evaluation cards. Finally, a comparative analysis of selected packages was carried out based on a comprehensive quality assessment, constituting the sum of partial grades together with the relevant coefficients
Quality of services on the example of a driver training centre
Authors: Harynek Dawid , Czech Renata , Zabochnicka-Świątek Magdalena , Czech Piotr , Turoń Katarzyna
Published: March 2019

In recent decades, service companies have started to use marketing tools, so far used only in industry, leading to the fact that the service has become a commodity. The dynamic development of enterprises providing services to companies and final customers together with growing competition to survive on the market must aim to improve the quality of services offered and maintain them at the highest level. The article presents an analysis of the quality of driver training centre services.
«Góngora», de Giulia Poggi
Authors: Candeloro Antonio
Published: March 2019

Reseña del libro Góngora, de Giulia Poggi (Roma, Salerno Editrice, 2019).

Se trata de una monografía destinada a convertirse en referencia para todo aquel que quiera acercarse a la obra de uno de los poetas más emblemáticos del Siglo de Oro español. Desde las obras de la juventud, hasta las grandes obras maestras de la madurez, la hispanista italiana nos ofrece un panorama completo y detallado de las múltiples y contrastadas interpretaciones a que ha dado lugar la "nueva poesía" del escritor andaluz.
A visão do sagrado pelos millennials: a idolatria dos Youtubers
Authors: Fernandes Dias Elisa Do Rosario
Published: March 2019

Os heróis do imaginário infantil situam-se em paradigmas socioculturais diferentes, mas preservando alguns traços comuns, como: a força do(s) poder(es) extraordinário(s), a bipolaridade do bem e do mal, a relação entre elementos cósmicos e entre o humano e o inumano.
Estes heróis vão desde o homem-deus dos clássicos gregos, à figura do messias numa linha judaico-cristã, às míticas personagens dos contos de fadas eternizadas pela cultura cinematográfica, passando para versões mais tecnologizadas como os Pokémonesaté modelos mais biónicos.
Atualmente parece emergir um novo “herói” para osmillennialsque se consubstancia na “personagem” do Youtuber.
Como corpusda investigação partimos das representações que crianças com idades entre os 9 e os 13 anos têm acerca dos Youtubers. A amostra incluiu crianças de uma escola pública portuguesa às quais aplicámos um inquérito por questionário online.
Ésquilo: dramaturgia e repertório - uma discussão preliminar
Authors: Mota Marcus
Published: March 2019

A análise do número de obras atribuídas a Ésquilo possibilita a compreensão de algumas tendências tanto em sua dramaturgia em particular, quanto no teatro grego da primeira metade do século V a.C. Entre elas, há a exploração de questões de gênero, identidade cultural e hibridismo cênico.
BEARD, Mary. SPQR: Uma história da Roma Antiga. Trad. Luis Reyes Gil. São Paulo: Planeta, 2017. 576 p. ISBN 978-85-422-0940-2
Authors: Braz Azenathe Pereira
Published: March 2019

Resenha crítica de SPQR: Uma História da Roma Antiga, de Mary Beard, publicado em 2017, pela editora Planeta.
The Performance Contexts of Trochaic Tetrameters Catalectic
Authors: Bowie Ewen
Published: March 2019

The paper explores the evidence for the archaic performance context or contexts of Archilochus’ and Solon’s trochaic tetrameter catalectic poems, noting that they were chanted rather than sung or spoken and thus different from both elegy and iambic trimeters. It argues that in Archilochus’ fragments apparently lengthy battle-narratives, concern with the polis as a whole, and addresses to elite individuals point to their first audience being a formal gathering of warrior-citizens, perhaps before a battle, or perhaps at a mass cremation following a battle such as that attested by the late-eighth-century polyandrion in Paroikia. It is suggested that Solon’s very political tetrameters may also have been addressed to a formal citizen assembly, with possible reperformance at the Apatouria.
Sponsoring the Arts: Melic Perspectives
Authors: Athanassaki Lucia
Published: March 2019

This paper explores the melic poets’ take on art and its sponsors. Since much has been written on the relationship of epinician poets with their patrons, this paper broadens the focus of enquiry to include other melic genres and, in addition to the verbal, to look at the visual arts as well, i.e. melic representations of communities that sponsor songs and of communities or individuals that sponsor other art-forms such as sculpture, architecture, and precious objects. Taking as starting point Xenophon’s depiction of Simonides in Hiero, I discuss epigrams XXVII and XXVIII Page and relevant testimonia that show Simonides’ keen interest in Athenian dithyrambic contests; Bacchylides’ Ode 19, probably composed for the Great Dionysia; Pindar’s Pythian 7, Paean 8, and fragment 3 in conjunction with Homeric Hymn to Apollo 281-99, Herodotus 1.31, Cicero, De oratore 2. 86. 352-353, [Plutarch] Consolatio ad Apollonium, and Pausanias – all of which offer precious insights into Pindar’s views on sponsoring monumental sculpture and architecture; and Bacchylides’ description of the golden tripods that Hieron offered to Apollo in Ode3. On the basis of this evidence I argue that whatever the nature and the range of remuneration of poets and artists may have been, melic rhetoric shows that it was the relationship of poets, artists and their sponsors with the gods that was ultimately at stake. This is why both the poetry and the traditions about Simonides, Pindar and Bacchylides privilege the divine favour that poets, artists and patrons alike either obtained or were hoping to obtain by offering masterpieces to the gods.
Il Poeta tra la Folla della Roma di Augusto
Authors: Galasso Luigi
Published: March 2019

I poeti augustei hanno un’attitudine complessa nei confronti delle cerimonie pubbliche. In alcune delle sue Odi, soprattutto del IV libro, Orazio vuole essere visto come uno tra molti nella sua celebrazione del princeps. Si tratta di componimenti con molti livelli di significato, che mostrano un’interessante dialettica tra l’aspetto pubblico e quello privato ed un particolare rapporto con i modelli poetici greci, arcaici ed ellenistici. Ovidio sviluppa questi spunti nelle sue elegie dell’esilio per dare vita ad una nuova poesia panegiristica.
Atrial conduit function quantitation precardioversion predicts early arrhythmia recurrence in persistent atrial fibrillation patients
Authors: Giubertoni Ailia , Boggio Enrico , Ubertini Esther , Zanaboni Jacopo , Calcaterra Eleonora , Degiovanni Anna , Bellacosa Ilaria , Marino Paolo N.
Published: March 2019

Aims

Atrial fibrillation incidence is increasing due to ageing population and electrical cardioversion (ECV) is overused because of atrial fibrillation recurrences. Study's aim was to evaluate value of novel three-dimensional echocardiographic-derived left atrial conduit (LAC) function quantification in predicting early atrial fibrillation recurrence after ECV.

Methods

We included 106 patients [74 (64–78) years] who underwent ECV for persistent nonvalvular atrial fibrillation. For all clinical data and simultaneous left atrial and left ventricular (LV) three-dimensional full-volume data sets were available before ECV. We computed LAC as: [(LV maximum − LV minimum) − (left atrial maximum − left atrial minimum) volume], expressed as % LV stroke volume. Atrial fibrillation recurrence was checked with Holter monitoring.

Results

One month after ECV 66 patients were in sinus rhythm and 40 experienced atrial fibrillation recurrence. Pre-ECV patients with atrial fibrillation recurrence showed higher LAC contribution to LV filling (P < 0.0001) and noninvasively estimated left atrial stiffness (P < 0.0001) compared with sinus rhythm patients. There were no other differences, neither in clinical characteristics nor in LV properties. At multivariate LAC (P < 0.001), left atrial stiffness (P = 0.002) and volume (P = 0.043) predicted early atrial fibrillation relapse, even when compared with other confounding factors. Receiver-operating characteristics area (ROC) analysis confirmed LAC as best atrial fibrillation recurrence predictor (0.84, P < 0.0001), cut-off value more than 54% exhibiting reasonable sensibility-specificity (76–75%).

Conclusion

Atrial fibrillation makes LV filling dependent on reciprocation between left atrial reservoir/conduit phases. Our data suggest that LAC larger contribution to filling in persistent atrial fibrillation patients reflects left atrial and LV diastolic dysfunction, which skews atrio-ventricular interaction that leads to atrial fibrillation perpetuation, making LAC a powerful atrial fibrillation recurrence predictor after ECV.
Transcathether aortic valve implantation with the new repositionable self-expandable Medtronic Evolut R vs. CoreValve system: evidence on the benefit of a meta-analytical approach
Authors: Kowalewski Mariusz , Gozdek Mirosław , Raffa Giuseppe Maria , Słomka Artur , Zieliński Kamil , Kubica Jacek , Anisimowicz Lech , Kowalewski Janusz , Landes Uri , Kornowski Ran , Lorusso Roberto , Suwalski Piotr
Published: March 2019

Aims

To compare transcatheter aortic valve replacement TAVR with self-expandable first-generation Medtronic CoreValve with new-generation Evolut R devices in patients with aortic stenosis.

Methods

Multiple databases were screened for all available reports directly or indirectly comparing CoreValve vs Evolut R. Primary endpoint was device success. Procedural, functional and clinical outcomes were assessed as well.

Results

Ten retrospective series including 12 294 pts. were found. Overall device success rate was 95.5% and was statistically higher in the Evolut R treated patients as compared with CoreValve: 96.6 vs. 94.8%, respectively; RR (risk ratio) 95%CIs (confidence intervals): 1.02 (1.00-1.04); P = 0.01. There were no statistical differences with regard to postoperative mean aortic gradients 8.5 +/- 5.3 vs 7.9 +/- 4.6 with Evolut R and CoreValve. Evolut R valve demonstrated nearly 50% reduction of the risk for moderate-to-severe paravalvilar leak 0.55 (0.39-0.79); P = 0.001; 60% statistically significant lower risk of developing myocardial injury 0.40 (0.22-0.72); P = 0.002 and numerical reductions in the risk of acute kidney injury, vascular complications and bleeding. Together with significantly reduced risk of permanent pacemaker implantation (0.80 [0.67-0.96]; P = 0.02) the above benefits were associated with 40% reduction in the risk of 30-day all-cause mortality with Evolut R as compared to CoreValve: 0.60 (0.37-1.00); P = 0.05.

Conclusions

The use of new-generation Evolut R was associated with improved procedural, functional and clinical outcomes compared with the CoreValve device.
Meta-analysis of impact of liver disease on mortality after transcatheter aortic valve implantation
Authors: Takagi Hisato , Hari Yosuke , Kawai Norikazu , Kuno Toshiki , Ando Tomo
Published: March 2019

Aims

To evaluate whether liver disease is associated with increased mortality after transcatheter aortic valve implantation (TAVI) and whether TAVI is associated with decreased mortality compared to surgical aortic valve replacement (SAVR) in patients with liver disease, we performed meta-analyses of currently available studies.

Methods

Studies reporting mortality in TAVI patients with liver disease versus those without liver disease and mortality after TAVI versus SAVR in patients with liver disease were eligible to be included. A relative risk (RR) or hazard ratio of mortality for TAVI patients with versus without liver disease and mortality for TAVI versus SAVR in patients with liver disease was extracted from each individual study. Study-specific estimates were combined in the random-effects model.

Results

We identified nine studies of TAVI patients with versus without liver disease and four studies of TAVI versus SAVR in patients with liver cirrhosis. Pooled analyses demonstrated no association of liver disease with early (in-hospital/30-day) mortality (P = 0.28), but a statistically significant association of liver disease with increases mid-term (1–2-year) mortality (hazard ratio 1.87, P < 0.00001) in TAVI patients, and no statistically significant difference in in-hospital mortality between TAVI and SAVR in patients with cirrhosis (RR 0.60, P = 0.12).

Conclusion

There may be no impact of liver disease on early mortality in TAVI patients, negative impact of liver disease on mid-term mortality in TAVI patients, and no difference in in-hospital mortality between TAVI and SAVR in patients with liver cirrhosis.
Bilateral left lateral ridge ablation increases the long-term success of patients ablated for atrial fibrillation
Authors: Di Monaco Antonio , Quadrini Federico , Troisi Federica , Vitulano Nicola , Cecere Giacomo , Guida Pietro , Langialonga Tommaso , Grimaldi Massimo
Published: March 2019

Aims

Pulmonary vein isolation (PVI) is the cornerstone of catheter ablation in paroxysmal atrial fibrillation (PAF). Studies reported that the PVI single procedure was able to achieve durable sinus rhythm without the need of antiarrhythmic drugs in 60–80% of patients with PAF. In this study, we report data regarding bilateral left lateral ridge ablation for PAF.

Methods

We retrospectively collected data of 120 consecutive patients (mean age 56 ± 10 years; 62% male) referred to our center to perform PVI. In 60 patients we performed PVI (group 1) and in 60 patients performed PVI and bilateral left lateral ridge ablation (group 2). All patients performed a clinical follow-up after 24 months from the ablation procedure.

Results

PVI was achieved in all patients. The mean radiofrequency time to perform ablation on the left atrial appendage ostium was 216 ± 49 s. In all patients of group 2 we obtained disappearance of local electrograms and the loss of local capture during pacing on posterior wall of left atrial appendage ridge. No significant differences were found between the two groups regarding mean contact force during ablation (14 ± 4 vs. 15 ± 4 g; groups 1 and 2, respectively,P = 0.34). At 24-month follow-up, single procedure success rate was significantly higher in group 2 compared with group 1 (88 vs. 74%, respectively;P = 0.03). No significant procedural complications were documented.

Conclusion

Bilateral left lateral ridge ablation is a safe technique able to improve the success rate of PVI in patients with PAF.
The Corelation between Labour Market and Education – Results of a Comparative Study Conducted in the Hungarian, Romanian and British Educational Systems
Authors: Máthé Ilona
Published: March 2019

The present study aims at highlighting some of the impacts that labour market an education mutually have on each other both in the context of economies in transition (even if they used to have long historic traditions related to pioneering in instruction and education at mass and elite level) and that of a steady and consequent capitalist state undisturbed by the storms of radical political changes and periods of totally negating the values and results created by former historic eras and communities.

The main idea is that the relationship between the labour market and education is that of a mutual demand and supply based corelation, permanently influencing each other, so no political or economic authority and power should miss taking this into consideration unless they want to fail.
The Cultural Meaning of Ceremonial Water in Seloliman Village as Constructing the Awareness of Care about Nature
Authors: Yudha Utama Jenny , Mustika Sari Visi , Adi Wicaksono Candra
Published: March 2019

This research is related to belief or culture in Seloliman village, Trawas sub-district, Mojokerto regency; it is Ceremonial Water in Jolotundo Petirtaan. Clifford Geertz assumed that culture as networks did not constitute an experimental science to look for the law but it was the interpretative science to look for meaning and symbol. This study used descriptive qualitative methods in which researchers attempted to describe written or oral words from observable people or behaviour. The findings indicated that culture or belief in the modern era was still applied because a culture or belief had symbol and meaning for people who believe it.
Character Building and The Awareness on The Importance of Caring for The Earth
Authors: Olang Yusuf
Published: March 2019

Environmental damage is getting worse in developing countries including Indonesia, so there is no guarantee that our children and grandchildren will live comfortably and safely in the years to come. The most fundamental thing that causes the rampant exploitation and destruction of the environment is the lack of awareness of the importance of caring for the earth. This awareness will grow along with beliefs and ideologies that become principles in people's lives. Destruction and exploitation of the earth cannot be stopped if the awareness and outlook on the meaning of the earth for human life are not grown starting from this very moment. Efforts to invite the public to respect and care for the environment often face resistance because it is propaganda. Literature has been proven to have the strength and ability to inspire, touch the human heart, move and foster awareness of the importance of caring for the earth and everything because humans and the earth are interdependent.
Communication Functions in Speech Act Tolerance in The Multiethnic Community Interaction in East Java As A Representation of Ecological Establishment in East Java
Authors: Rijadi Arief
Published: March 2019

One important aspect of communication is tolerance. In the 18th century, tolerance was an important value that was exalted, besides the value of truth and humanism. Tolerance is a basic and fundamental quality in social relations that rejects violence and coercion. In this case, tolerant in speech becomes urgent to build ideal communication in diverse communities. In the reality of social interaction, tolerance is expressed through speeches chosen by the participants. These tolerant speeches have communication functions. This study aims to describe the communication functions of tolerant speech acts expressed in the communication of East Java Javanese multiethnic communities. This research was conducted using a pragmatic approach and ethnographic research design communication. Data were collected in the form of speech units and speech contexts that occurred in East Javanese multiethnic speeches. Selected data were analyzed by descriptive techniques including the stages of identification and classification, interpretation, pairing, and meaning of data. The results of the study were directed at describing the diversity of communication functions of tolerant speech acts including among others (1) the function of harmony, (2) the function of familiarity, (3) function of forgiveness, (4) function of honesty, and (5) honorific function.
The Adjustment Of Banyuwangi Culture (Ecoculture Study In Novel By Hasnan Singodimayan)
Authors: Lesmana Iga Bagus
Published: March 2019

The creation of literary-work is inseparable from the surrounding culture. If literature is born from culture, then literature is truly an adaptation of a particular culture. Hasan Singodimayan, a cultural observer from Banyuwangi wrote several novels that raised the Banyuwangi regional cultural theme in his works. Hence, this study aims to explain the adjustment of Banyuwangi culture in a novel by Hasnan Singodimayan using ecocultural study. The theory used in this study was Ecoculture Julian H Steward. This descriptive research employed a qualitative approach. Research data were collected through library technique, and then data were analyzed by using content analysis. The findings indicated that the story in the novel by Hasnan Singodimayan adjusted the modified and illogical Banyuwangi culture.
DIAGENESIS DAN PROPERTI BATUAN KARBONAT MIOSEN TENGAH CEKUNGAN JAWA BARAT UTARA
Authors: Herdiansyah Firman , Dharmawan Arif
Published: March 2019

Daerah penelitian secara administratif terletak pada daerah Citeurep provinsi Jawa Barat dan secara geografis daerah penelitian terletak pada koordinat 106o 28’ 26,4” – 107o 00” 00’BT dan 06o 28’ 26,4” – 06o 30’ 54” LS. Deskripsi megaskopis dan sayatan tipis menunjukan fasies yang terdiri dari Skeletal Packstone, Red Algae Packstone, Foram Packstone, dan Boundstone dengan lingkungan diagenesa mulai dari Mixing Zone, Fresh Water Phreatic, dan Meteoric Vadose. Porositas dan Permeabilitas didefinisikan dengan melakukan analisis routine dari core plug singkapan dan ditunjang oleh sayatan tipis untuk melihat jenis dari porositas yang ada. Grup dengan lingkungan diagenesa Meteoric Vadose memiliki porositas 10%-22% dan permeabilitas 0.03 mD – 1.3 mD, group dengan lingkungan diagenesa Fresh Water Phreatic memiliki porositas 3% - 24% dan permeabilitas 0.02 mD – 1.5 mD, sedangkan grup dengan lingkungan diagenesa Mixing Zone memiliki porositas 20% dan permeabilitas 0.03 mD.
ANALISA OPTIMASI GAS LIFT PADA SUMUR RS-1 DI LAPANGAN RS
Authors: Septiani Rachmi , Fathaddin Muh Taufiq , Sulistyanto Djoko
Published: March 2019

Sumur RS-1 adalah sumur yang tidak mampu lagi untuk memproduksikan fluidanya secara sembur alam, sehingga membutuhkan instalasi artificial lift. Untuk produksi harian, sumur tersebut dibantu oleh artificial lift jenis continuous gas lift. Dengan bantuan gas lift, Sumur RS-1 dapat berproduksi selama beberapa tahun. Produksi tertinggi untuk Sumur RS-1 adalah sebesar 273 BFPD. Sumur RS-1 memiliki 3 gas lift valve dengan titik kedalaman injeksi berada pada kedalaman 2.743 ft. Dalam studi ini dilakukan analisia optimasi penggunaan artificial lift yang sudah terpasang yaitu continuous gas lift. Sumur RS-1 memiliki watercut diatas 50%, oleh karena itu, pembuatan grafik IPR Sumur RS-1 menggunakan composite IPR. Maka didapat nilai productivity index Sumur RS-1 sebesar 0,71. Optimasi Sumur RS-1 ini dilakukan dengan meningkatan laju alir gas injeksinya dari 0,002 mmscfd menjadi 0,2 mmscfd karena menghasilkan net income yang paling tinggi yaitu 1.979 USD/d dengan pertambahan oil rate yang awalnya sebesar 33,9 STB/d menjadi sebesar 65,2 STB/d.
RESERVOIR CHARACTERIZATION USING PRESSURE DERIVATIVE METHOD IN NA-20 WELL SENJA FIELD
Authors: Andini Nadhira , Fathaddin Muh Taufiq , Rosyidan Cahaya
Published: March 2019

The pressure behaviour of a well can be easily measured and is useful in analysing and predicting reservoir performance or diagnosing the condition of a well. Since a well test and subsequent pressure transient analysis is the most powerful tool available to the reservoir engineer for determining reservoir characteristics, the subject of well test analysis has attracted considerable attention. A well test is the only method available to the reservoir engineer for examining the dynamic response in the reservoir and considerable information can be gained from a well test. A well test is the examination of the transient behaviour of a porous reservoir as the result of a temporary change in production conditions performed over a relatively short period of time in comparison to the producing life of field. The build up can be both the part of the test when the well is shut in and a value represented by the difference in the pressure measured at any time during the build up and the final flowing pressure. The most common megods of transient (time dependant) pressure analysis required that data points be selected such that they fell on a well-defined straight line on either semi-logarithmic or cartesian graph paper. The well test analyst must the insure that the proper straight line has been chosen if more than one line can be drawn through the plotted data. This aspect of interpretation of well test data requires the input of reservoir engineer. Equally important is the design of a well test to ensure that the duration and format of the test is such that it produces good quality data for analysis. The results obtained from transient pressure analysis are used to discover the formation damage by detemining skin. This experiment will be analyzed oil well which is NA-20 well in Senja field. The results from the analysis of the data obtained on NA-20 well is 4.84 mD permeability, skin +1.42, pressure changes due to skin (ΔPskin) 264.384 psi, and flow efficiency 0.842 with 851.61 ft radius of investigation. The result from the analysis of the well showed that NA-20 well in Senja field have formation damage.
The events of Iraq and its reflection on US-Turkish relations since 2011
Authors: Meri Muthanna Faiq , Abdel Wahid Nathir Sami
Published: March 2019

The political, security, economic and social events taking place in the Iraqi arena - both before 2003 and in the period that followed - have different effects at the internal and external levels due to the overlap of interests and the multilateral parties concerned with the situation of Iraq and related to it in one way or another, including its impact on the United States US and Turkey, as the United States of America, the countries that occupied Iraq in 2003 and then withdrew from it in 2011 and is associated with treaties and strategic agreements, Turkey is the northern neighbor of Iraq and links with links and political and security issues and economy And thus the events in Iraq positively and negatively affect relations between the US and Turkey.