bluuebunny/crossref_metadata_2025 huggingface dataset:
Three-dimensional phase field simulation for rafting of multiparticle precipitate in elastic inhomogeneous alloy under external stress
Authors: Mao H. , Kong Y. , Shuai X. , Tang S. , Du Y.
Published: January 2019

Nickel-based super alloys are the main candidate materials for aero-engines, gas turbine blades etc. This paper focuses on the simulation of nucleation and growth kinetics of ?' phase, and stress response mechanism of ?? phase particles during their preferential coarsening (rafting) in elastic inhomogeneous system. A phase-field model is employed in the present study, which incorporates chemical, interfacial, and elastic energies, and it couples essentially to externally imposed mechanical field. Due to the limitations of the 2D model on analyzing the shape and size of the precipitate particles, the process of ?' phase particles growing and coarsening is further modeled by performing 3D simulation. The results show that the average particle size is linearly related to the evolution time and satisfies the Lifshitz-Slyozov-Wagner (LSW) classical coarsening theory when the external stress is not applied. Particles exhibit a strong special orientation under tensile stress, and the orientation is in excellent agreement with previous studies. In the nucleation stage, the collision and coalescence between particles promote rafting significantly, and the number of soft particles is obviously larger than that of hard particles. In the coarsening stage, the growth rate of soft particles is higher than that of hard particles. Three-dimensional simulation results show that the effect of final characteristic size of precipitated particles is not significant by external loads. The morphology evolution and coarsening mechanism of the precipitated particles are of great significance for studying the strengthening mechanism of super-alloy.
Surgical Fear Questionnaire (SFQ) - Serbian cultural adaptation
Authors: Jankovic Slobodan , Antonijevic Gordana , Mirkovic Snjezana , Raspopovic Katarina , Radoicic Ljiljana , Putnik Srdjan , Zivkovic-Radojevic Marija , Vasic Ivana , Nikolic Bosko , Stanojevic Dragan , Teofilov Sladjana , Tomasevic Katarina , Opancina Valentina
Published: January 2019

Background/Aim. After having established an indication for surgery, some patients experience sense of fear, unpleasantness and embarrassment due to the expectance of adverse consequences of surgical intervention. Recently an instrument for measuring fear of surgery ? the Surgical Fear Questionnaire (SFQ) ? was developed and validated on a sample of Dutch patients awaiting surgery. The objective of this study was to translate the SFQ to Serbian language, make cultural adaptation of the translation and test its reliability and validity in a sample of outpatients in Serbia. Methods. The SFQ was translated and adapted according to the accepted international standards (double forward translation, harmonization, backward translation, and piloting). The study was multicentric, involving patients from 7 cities in 3 countries: Serbia, Montenegro, Bosnia and Hercegovina. It was conducted at state-owned health facilities. The sample was of consecutive nature and consisted of 330 outpatients who visited specialists of either internal medicine or general surgery. Results. Translated SFQ showed excellent reliability, both when rated by the investigators (Cronbach?s alpha 0.915), and by the patients themselves (Cronbach?s alpha 0.917). It is temporally stable, and both divergent and convergent validity tests had good results. Factorial analysis revealed one domain on the whole study sample and two domains like in original on the subsample of patients without experience with surgery in general anesthesia. Conclusion. Identification of patients with high level of fear of surgery by this questionnaire should help clinicians to administer measures which may decrease fear and prevent avoidance of absolutely necessary surgery by such patients.
Assessment of supracrestal tissue attachment variation in patients with chronic periodontitis before and after treatment: A clinical-radiographic study
Authors: Abullais Shahabe , Anoop Gore , Dani Nitin , Al-qahatani Saad , Yaqoob Ashfaq , Khan Abdul , Kade Mohammed
Published: January 2019

Background/Aim. Healthy periodontium comprises the dento-gingival junction. Periodontal disease starts to appear when the integrity of the junctional epithelium is disturbed. Assessment of the supracrestal tissue attachment (SCTA) is essential because there is a frequent need for restoration or prosthesis after periodontal surgical and non-surgical therapy. The aim of the present study was to evaluate the SCTA variations in a patients with chronic periodontitis before and after treatment. Methods. Thirty systemically healthy patients with periodontitis were enrolled in the study. Fifteen patients were subjected to scaling and root planing and 15 to open flap debridement. Radiographic and clinical findings of the SCTA were assessed before and after treatment at 3-month and 6-month intervals. Results. Comparison between clinical and radiographic findings of the SCTA showed a significant difference in patients with periodontitis (p < 0.05). This difference was not significant after treatment of patients with shallow pockets with scaling and root planing (p > 0.05), but showed a significant difference in patients with moderate pockets treated by open flap debridement (p < 0.05). Conclusion. Progression in periodontal disease causes a reduction in the SCTA dimension, which regains its original dimensions after periodontal therapy. It takes around 3 months for the shallow pockets to regain the supracrestal tissue attachment to the original dimension when treated by scaling and root planing, whereas moderate pockets regain it after 6 months when treated with open flap debridement.
The Impact of Eliminating the 20-F Reconciliation on the Cost of Debt: An Exploratory Study
Authors: Chen Lucy Huajing , Deng Saiying , Gupta Parveen P. , Sami Heibatollah
Published: January 2019

In 2007, the U.S. Securities and Exchange Commission voted to eliminate the 20-F reconciliation requirement for foreign issuers listing their stocks or bonds in the U.S. capital markets and preparing their financial statements under International Financial Reporting Standards (IFRS). Distinct from prior research focusing on the equity market, we investigate the impact of eliminating the 20-F reconciliation on the cost of debt in the U.S. listed foreign bond market. Employing a difference-in-differences approach, we document that bond yield spread increases for foreign IFRS bond issuers after the elimination of 20-F reconciliation. The results suggest that bondholders, on average, view the elimination of 20-F reconciliation as an information loss. Cross-sectional analyses reveal that the positive association between the elimination of 20-F reconciliation and bond yield spread is more pronounced for firms with greater stock return volatility, lower institutional ownership, weaker reporting incentives, and higher country-level investor protection.

JEL Classifications: M41; G15; G18.
Actividades de programación neurolingüística como fuente de afrontamiento del estrés laboral, en personal docente de la Unidad Educativa Princeton
Authors: Huilca Alvarez Wilson Alejandro
Published: January 2019

Con la finalidad de constatar un cambio en la percepción de las personas respecto a la intensidad del estrés laboral, el presente artículo recoge los datos de evaluación de la intervención realizada en el personal docente de la Unidad Educativa Princeton de la ciudad de Riobamba, Ecuador. Los procedimientos de evaluación se realizaron mediante la aplicación de encuestas de estrés laboral validadas. Dicha evaluación se efectuó antes y después de la aplicación de la Programación Neurolingüística con el objetivo de verificar un cambio de percepción de los docentes hacia las preguntas de cada encuesta. El estudio se aplicó a los 17 docentes de la institución. Las sesiones de Programación Neurolingüística se realizaron cada viernes durante 12 semanas. Los resultados expresaron cambios significativos en la encuesta denominada Cuestionario de Problemas Psicosomáticos que mide la percepción de factores de salud. Por otra parte, se produjo un cambio muy leve en la percepción de la encuesta denominada Escala General de Satisfacción que mide la percepción de los factores laborales. Se aplicó el método estadístico chi – cuadrado al resultado global de cada encuesta, resultando la aceptación de la hipótesis que responde afirmativamente al afrontamiento del estrés laboral en la unidad educativa.
Generación de viajes de aeropuertos en la ciudad de Guayaquil, Ecuador.
Authors: Von Buchwald Federico , Valarezo Ramón Cynthia , Gómez Maldonado Carolina
Published: January 2019

Se determinó la demanda de tráfico que se genera en el aeropuerto de Guayaquil (José Joaquín de Olmedo) usando como material de apoyo el manual de generación de viajes realizado por el ITE (Institute of Transportation Engineers) de Estados Unidos. En el manual se establecen tres variables independientes para este uso de suelo, las que son: empleados que laboran en el aeropuerto de Guayaquil, vuelos totales durante el día y vuelos comerciales (nacional e internacional). Además se consideró el flujo vehicular a la entrada y a salida del aeropuerto. Se realizaron conteos de usuarios a pie, personas dentro de los vehículos durante la hora pico en  3 días y conteos únicamente de vehículos  en 24 horas. Se obtuvo información de la cantidad de personas que laboran en el aeropuerto, los vuelos que se generan durante el día y los vuelos comerciales.  Con los datos obtenidos se determinaron las tasas de generación de viajes, coeficientes de correlación, ecuaciones de regresión y comparaciones de las gráficas obtenidas de Trip Generation del aeropuerto con las establecidas por el Manual de generación de viajes ITE (EEUU).
Importancia de la capacidad de almacenamiento y uso de modelos logísticos en el nivel de productividad de distribuidoras pymes de articulos de consumo masivo para el hogar, 2014
Authors: España Garcia Marcos Vinicio , Cabrera Armas Mayra Alejandra , Sánchez Mosquera Mónica Gabriela
Published: January 2019

El presente trabajo se centra en la evaluación de los problemas que presentan diversas PYMES o  distribuidoras del mercado de artículos de uso masivo para el hogar, en sus bodegas. Problemas como la falta de espacio, daños en la mercadería, y la falta de stock afectan directamente su gestión de almacenamiento, nivel de servicio y por ende arriesgan sus niveles de ventas.  Debido al constante crecimiento de competidores en este mercado, es necesario plantear propuestas que mejoren sus estrategias de almacenamiento y que reduzca los tiempos de despacho. Y así mejorar el servicio que se brinda a los clientes además de mejorar la eficiencia en los procesos.
Bound by One Belt
Authors: Luzyanin S. G.
Published: January 2019

The article contains an information about the alignment of the Silk Road Economic Belt with the Shanghai Cooperation Organization and Russian integration projects the main of which is the Eurasian Economic Union. Complex Chinese initiative has many different aspects and dimensions relating to trade, investment, transport infrastructural, cultural and humanitarian issues. The author considers the problem of alignment in many aspects including the current state of Russian academic expertise and the possible ways of using the project in order to improve socioeconomic situation in the Russian territories in the Central Asia, Siberia and the Far East. The author stresses the security concerns, which seemed to be underestimated by China on the early stages of the program implementation. In this context, the author pays special attention to the threats of international terrorism, the rais ing instability in the states-participants, transnational crime and drug market. The author concludes that the project will not bring positive consequences unless Chinese authorities will closely cooperate with Russia and the regional organizations it associated with. As a result, it is possible to reach a partner cooperation between the states (although different in their economic potential), under which China will benefit effective using of its resources and overcome the current economic isolation of the Сentral Asian states. From the other hand, Russia will get a chance to improve the situation of economic inequality between its internal regions. Russian military and political power may guarantee successful assimilation of Chinese financial investments.
PRC’S MILITARY-INDUSTRIAL COMPLEX UNDER XI JINPING
Authors: Kamennov P. B.
Published: January 2019

The article is dedicated to the achievements and problems of the Chinese military-industrial complex and its role in the economy building during the Xi Jinping` s term (2012–2017). The evolution of the problem is particularly interesting in the context of the realization of the National Security modernization Program of China 2050. The author provides a description of the current state of military-industrial complex fields. Chinese atomic industry has been growing rapidly during the last years. There are significant achievements in the field of the rocket and space industry. Aviation industry, and in particular the aviation engine construction, has been traditionally considered as underdeveloped in comparison with the American, Western European and Russian aviation. In this sense, the Chinese government endeavors to improve the situation. Microelectronics, which has also been rather underdeveloped, is expected to obtain a new quality. The shipbuilding industry in China nowadays gives positive examples of design and building heavy-tonnage vessels, such as nuclear-powered submarines. Apart from the military and technological achievements, many efforts are put in order to reduce the level of the Chinese dependence on the import of foreign technologies. The author stresses the significance of the military industry conversion practices, which used to be one of the main driving forces of the China`s economic growth in 1980–1990s. The so-called military civil integration is one of the most effective strategies aimed at overcoming the technological backwardness of the military- industrial complex. It contributes to the technological growth in the fields of security due to the practices of redirection the civil technologies into the military field. Such an approach allows China to avoid the Western military embargo.
LIMITS OF INTERACTION OF RUSSIAN AND CHINESE BUSINESS IN THE COUNTRIES OF EURASIAN ECONOMIC UNION
Authors: Kuznetsov A. V.
Published: January 2019

The article is dedicated to the possibility of joining the Russian and Chinese integration initiatives on the EEU space from the side of business-actors. The author stresses the necessity for a wider type of analysis, which would not be limited by such narrow research object as perspectives of the so-called Silk Road Economic Belt. The study is based on the statistic analysis of the partnerstates foreign trade and official information, as well as expert evaluation of the investments` scale and structure. Besides, the author collected data about the direct investment provided by Chinese and Russian TNC in order to support the EEU member-states (directly or via third states). The significant part of the article is dedicated to the issues of competition between the Chinese and Russian TNC in Kazakhstan and Kyrgyzstan and possibilities of the fruitful cooperation between those businesses in Central Asia. The author also sheds light on the growing impact of the Chinese business in Belarus and Armenia, where Russian firms are the most powerful foreign economic actors, what, nevertheless, does not re duce the significant impact of the Western European and other TNC. Those considerations are followed by the author`s examination of the limitation of the ChinaRussia business partnership in Russia itself; the author also presents an original comparative analysis of the Chinese direct investments in Russia and vice versa. Finally, the author attempts to verify the hypothesis about the positive perspectives of the Russia-China economic partnership outside of the post-soviet space. The author claims that the lack of such a cooperation between Russian and Chinese TNCs in Africa or Latin America illustrates the power of political limiting factors, rather than the absence of mutual interest of the parties.
CHINA AND GLOBAL LEADERSHIP
Authors: Mikheev V. V. , Lukonin S. A. , Ignatev S. V.
Published: January 2019

In this article, the authors evaluates the perspectives of China to become the World`s leader. The suggested concept of leadership, which includes such basic factors as the strategical power, attractiveness of political institutions, ability to create ideas and find allies, is aimed to analyze the complex leadership potential of the country. The author believes that the so-called “Trump factor”, which explicitly refers to the USA`s withdrawal from TPP and the Paris agreement on climate change, will result in a rising demand for the Chinese leadership. However, in this case, there are certain questions to be answered: is China ready for such a leadership? Is it capable of taking such a great responsibility towards the international community? Does it have sufficient potential? The authors claim that during the upcoming 20–30 years China will not become the global leader, because of the internal and external political issues.
The Phenomenon of Related Dynamics in Global Finances (Russia, Brazil)
Authors: Mirkin Yakov M. , Lebedeva Karina M.
Published: January 2019

The article establishes stable codependencies between international financial markets and their underlying cause and effect mechanisms, as an object of a global transformation. We demonstrate an intense co-integration between the financial markets of Russia, Brazil and the other emerging markets of Latin America (through the lens of stock markets and national currencies). The cause and effect mechanisms of this dependency are examined. We characterize the countries as analogous substitutes for investors (abundant similarities include: models of collective behaviour, ideology, model and structure of the economy, model of the financial sector, highly speculative markets in shares and currencies). The article explains an extremely limited role of the internal (primarily retail) investors in determining dynamics of the financial market. The central role of non-resident actors (global financial institutions and institutional investors) in the dynamics of the markets of Russian and Brazil is established. We demonstrate that for Russia and Brazil sources of foreign portfolio investments coincide. This includes Anglo-Saxon centers, specifically the US and British offshore jurisdictions, and the global centers of secondary importance (the Netherlands and Luxembourg). The decision making models of global investors in Russian and Brazil are examined: stock prices are driven by the oil prices, and in part by the US stock market, and rouble and real exchange rates follows oil prices and the EUR-USD currency pair. Analysis and conclusions made in the article are supported by a significant volume of statistical modelling.
The Role of Business in Transforming the Political Organization of the World
Authors: Lebedeva Marina M. , Kharkevich Maxim V.
Published: January 2019

Having moved to the global level, capitalist political economy today is turning into a dominant way of governance in world politics, undermining the state-centrist model that has been developing since the time of the Westphalian peace treaties. As a result, we are witnessing a Schumpeterian phenomenon of “creative destruction” i.e., destruction of old accompanied by creation of new. The current world politics is dominated by the logic of destruction, and this destruction is not limited to changing interstate relations, as it is represented in most studies, but involves at the same time at least three levels of political organization of the world, forming a synergy effect: the level of the Westphalian world order; the level of interstate relations; the level of the national state. The Westphalian ststem is being blurred largely by transnational business activity. Entrepreneursinnovators form capitalism of co-participation. This capitalism rests not on interest, but on values and social ties that unite people in networks. Examples of such capitalism are various forms of sharing, peer-topeer networks, wiki-platforms, block-chain technology. Capitalism of sharing unites in- formational networks and human potential, the main resource of such capitalism is precisely human capital, human trust and social relations. The sharing is being transmitted to the international political sphere, supplementing the principle of the Westphalian sovereignty with the potential of eventually replacing it. At the same time, practices are being introduced into the political organization of the world from other projects of the political organization of the world, in particular Islamic (Islamic banks, hawala money transfer system, etc.).
The Subjects of Transnational Business and the Processes of Global Economic Governance
Authors: Afontsev Sergey A.
Published: January 2019

In recent decades, transnational business actors have substantially strengthened their role in global economic governance. Although this trend became less pronounced after the global crisis of 2008–2009, it was by no means reversed. With multinational companies (including those from developing markets) increasing scale and scope of their operation and national governments competing for foreign direct investment (FDI) as a development resource, both official and public-private economic governance mechanisms shape their agenda with a reference to transnational business interests. As a result, FDI promotion policies prevailed in post-crisis years, in contrast with a remarkable growth of protectionism in international trade. At the same time, as the case of economic sanctions shows, with increased tensions in international relations business interests are readily sacrificed, and thus far transnational business actors have no reliable tools to change the situation.
The Deterioration of Reproduction Conditions in the U.S. Economy
Authors: VASILIEV V. S.
Published: January 2019

In the article the reasons for the deceleration of the average annual rates of economic growth of the United States are analyzed.  The rates declined in one and the half decade of the XXI century twice in comparison with the last three decades of the  twentieth century. Leading American economists and analysts  associated the main cause of the slowdown in economic growth with  a double drop in the rate of total factor productivity (TFP). This  indicator reflects the synergistic effects of the interaction of physical  and human capitals in the production process. The gradual decrease in the synergetic value of the interaction of labor and  capital in the US economy, other things being equal, also means a  decrease in the contribution of sinergetic factor to the rates of  economic growth and a greater priority in the state socio-economic policy of the capital factor in economic development. In  turn, the increasing role of capital in the economic development of  the US turns around with a sharp increase in inequality in income  distribution among different social strata of American society,  resulting in the bulk of the increase in economic production to  primarily 20% of the wealthiest layers of American society. The  growth of injustice in the distribution of goods and services in recent  decades in the United States was due to the lack of purposeful state  policy of the income redistribution. me. The absence of such a policy  stemmed from a growing crisis of most components of the  reproductive logistics of the American economy. In the end, general  conclusion is that the trend towards long-term decline in economic  growth will continue in the future because the US will be forced to invest trillions of dollars for infrastructure modernization in the  economy, which will not bring back quick economic returns in the short and possibly medium term.
Das Kind Mit Dem Bade Ausschütten? U.S. Federal School Reform in Early 21ST Century
Authors: LANKO D. A.
Published: January 2019

Grounded in analysis of specific features of the federal school reform  undertaken in the U.S. in early 21st century, this article demonstrates that the U.S. government attempted to reduce  the number of students lagging behind and thus to increase  students’ average performance by means of stimulating them to  transfer from underperforming to better schools, including from  public schools to schools of other types, which offer higher quality of  teaching. The article distinguishes three stages of the reform. On the first stage, in late 20th century, new types of schools emerged in the  U.S.: in addition to pre-existent public, private and religious schools, as well as home schooling, magnet schools  emerged in 1970s, and charter schools emerged in 1990s. On the  second stage, during George W. Bush Administration, U.S.  government assumed the powers to stimulate transfer of students  from underperforming public schools to charter schools, and to  stimulate increase in the number of charter schools. On the third  stage, during Barack Obama Administration and the first year of Donald Trump Administration, U.S. government faced the  impossibility to significantly increase the number of charter schools, to stimulate mass transfer of students from public schools  to charter schools, and to significantly improve average students’  performance over short time. Even if U.S. government assumes the  powers to stimulate transfer of students also to private schools, as  Donald Trump Administration proposed, it will hardly have a positive  effect in the short run. The article concludes that the model of school reform applied in the U.S. cannot solve the puzzle, because it  concentrates available resources around elite schools, while most  students lagging behind concentrate around traditional public schools.
IMPLIKASI TINGKAT KECERDASAN LOGIKA MATEMATIKA SISWA TERHADAP PEMECAHAN MASALAH MATEMATIKA
Authors: Kamsari Kamsari , Winarso Widodo
Published: January 2019

Penelitian ini bertujuan untuk menyelidiki tingkat kecerdasan logika matematika dan kemampuan pemecahan masalah. Metode penelitian ini adalah studi kasus. Hasil penelitian ini adalah (1) kecerdasan logika matematika siswa kelas 11 IPA SMAN 1 berada pada tingkat kompleks; (2) kemampuan pemecahan masalah pada materi fungsi komposisi dan fungsi invers pada siswa tingkat dasar dan tingkatan kompleks termasuk dalam kategori kurang, dengan rata-rata sebesar 42,75 dan 43,78, sedangkan siswa tingkatan koheren termasuk dalam kategori baik dengan rata-rata yang diperoleh sebesar 64,24; (3) terdapat pengaruh yang signifikan antara kecerdasan logika matematika dengan pemecahan masalah pada materi fungsi komposisi dan fungsi invers sebesar 35,4% pada tingkat koheren, 12,6% pada tingkat kompleks dan 6,2% tingkat dasar; (4) karakteristik setiap tingkat kecerdasan logika matematika dalam memecahkan masalah matematika berbeda–beda. Untuk siswa tingkat dasar dan tingkat kompleks masih lemah pada tahap II dan V, serta baik pada tahap I, III dan IV. Adapun untuk siswa tingkat kohheren sudah cukup baik pada tahap II dan V, serta sangat baik pada tahap I, III dan IV.
PENGEMBANGAN LKS BERDASARKAN MASALAH KONTEKSTUAL PADA MATERI OPERASI HITUNG BENTUK ALJABAR
Authors: Loli Kornelis Jaha , Damayanti Nia Wahyu , Yuniarto Eko
Published: January 2019

Berdasarkan hasil penelitian terhadap kesulitan yang dihadapi oleh guru matematika dan siswa di tingkat SMP, pemahaman yang rendah dari siswa tentang operasi hitung bentuk aljabar dikarenakan siswa tidak mampu menghubungkan antara apa yang mereka pelajari dengan pengetahuan tersebut dimanfaatkan dalam kehidupan nyata. Penggunaan perangkat pembelajaran yang berdasarkan masalah kontekstual akan sangat membantu siswa. Metode pengembangan yang digunakan adalah Research  and Developmepment dengan menggunakan model pengembangan ADDIE. Pengembangan ini dimaksudkan untuk mengetahui kevalidan (yang dihasilkan dari hasil validasi) dan keefektifan (yang dihasilkan dari hasil angket dan nilai siswa). Dari hasil penelitian dapat dikatakan valid karena diperoleh hasil validasi oleh ahli materi dan ahli desain pembelajaran yaitu 87,05%, dan efektif karena angket siswa sebesar 85,93%, dan nilai tes evaluasi dari 8 siswa telah mencapai nilai KKM yang ditentukan oleh sekolah yaitu 70.
MENUMBUHKAN KARAKTER KONSERVASI BIODIVERSITAS MELALUI PENERAPAN SPECIES IDENTIFICATION AND RESPONSE SOFTWARE
Authors: Kurniasih Mike Dewi
Published: January 2019

Tujuan penelitian ini adalah untuk mengetahui pengaruh penggunaan aplikasi Species Identification and Response Software (SIRS) pada Mata Kuliah Konservasi Keanekaragaman hayati dalam menumbuhkan karakter konservasi pada diri mahasiswa. Penelitian ini merupakan penelitian tindakan kelas (action research) dengan langkah-langkah penelitian yang meliputi tahap perencanaan, tindakan, observasi, dan refleksi.Penerapan pembelajaran mata kuliah Konservasi Keanekaragaman Hayati berbasis aplikasi SIRS terbukti mampu meningkatkan nilai-nilai karakter konservasi biodiversitas yang meliputi awareness, knowledge, attitudes, skills dan participation. Kenaikan terbesar terjadi pada participation (50 %), pada aspek knowledge terjadi peningkatan sebesar 6.3 %. Pada indikator attitude terjadi kenaikan sebesar 12.5 %. Indikator skill berada di urutan paling bawah dalam peningkatan masing-masing indikator karakter yang tidak menunjukkan adanya kenaikan yang berarti.
EKSPERIMENTASI METODE STAD DAN TGT TERHADAP PRESTASI BELAJAR MATEMATIKA DITINJAU DARI GAYA BELAJAR
Authors: Friantini Rizki Nurhana
Published: January 2019

Penelitian ini bertujuan untuk mengetahui: (1) Mana yang memberikan prestasi belajar matematika yang lebih baik, STAD atau TGT. (2) Mana yang memiliki prestasi belajar matematika yang lebih baik, siswa yang memiliki gaya visual, auditorial, atau kinestetik. (3) Pada setiap metode pembelajaran, mana yang memberikan prestasi lebih baik pada setiap gaya belajar. (4) Pada setiap gaya belajar, mana yang memberikan prestasi belajar matematika yang lebih baik, STAD atau TGT. Penelitian ini merupakan penelitian eksperimen semu dengan desain faktorial 2 × 3. Populasi penelitian adalah seluruh siswa kelas VIII di SMP Negeri 1 Kuala Behe. Sampel berjumlah 63 siswa. Teknik analisis data adalah ANAVA dua jalan dengan sel-sel yang tidak sama. Hasil penelitian menunjukkan sebagai berikut. (1) Metode TGT memiliki prestasi belajar yang lebih baik daripada metode STAD. (2) Siswa dengan gaya belajar visual, auditorial, dan kinestetik memiliki prestasi belajar yang sama. (3) Pada siswa yang diajar dengan menggunakan STAD dan TGT, siswa dengan gaya belajar visual, auditorial, dan kinestetik memiliki prestasi belajar yang sama. (4) Pada siswa dengan gaya belajar visual, auditorial, dan kinestetik, metode TGT memiliki prestasi belajar yang lebih baik daripada metode STAD.
Clasificador bayesiano de dos clases para seleccionar la mejor regla de prioridad en un problema Job Shop: Open Shop
Authors: Castrillón Gomez Omar Danilo , Sarache William Ariel , Ruiz Herrera Santiago
Published: January 2019

El objetivo de este trabajo es seleccionar, por medio de un clasificador bayesiano de dos clases, la mejor regla de prioridad que puede ser aplicada en un problema Job Shop: Open Shop.  En una primera fase se expone el diseño del clasificador, entrenado con 300 problemas generados aleatoriamente. En 150 de ellos,  la mejor regla de prioridad  para secuenciarlos fue FIFO (First in First Out) y en los restantes fue la regla LPT (Long Process Time). En una segunda fase, un conjunto de 300 problemas diferentes, con las mismas características de la primera fase, fueron generados aleatoriamente. Estos problemas fueron clasificados previamente (sin secuenciarlos) por medio la técnica bayesiana propuesta. Los resultados demuestran que en el 96% de los casos, el clasificador propuesto logra identificar la mejor regla de  prioridad para secuenciar pedidos
Museu de Arte do Rio
Authors: Giroto Ivo
Published: January 2019

O artigo analisa o Museu de Arte do Rio (MAR), a partir dos diálogos que sua arquitetura estabelece com a história dos edifícios preexistentes e suas partes constitutivas. Trata também das relações travadas entre o conjunto e o entorno urbano, a paisagem e a cidade como um todo. Obra do escritório Bernardes & Jacobsen inaugurada em 2013 no âmbito das ações do Projeto Porto Maravilha, o museu nasce inserido em uma das áreas histórico-culturais mais significativas da cidade. Estes intensos e obrigatórios diálogos com o patrimônio urbano e edificado insere o novo museu no extenso rol de equipamentos culturais brasileiros abrigados em edifícios de reconhecido valor histórico. É sobre a intensidade destes diálogos que trata o texto a seguir.

Palavras-chave: Museu de Arte do Rio, MAR, arquitetura contemporânea, museus, patrimônio arquitetônico.
PENGEMBANGAN PARIWISATA BERBASIS MASYARAKAT
Authors: Rusyidi Binahayati , Fedryansah Muhammad
Published: January 2019

Pengembangan pariwisata saat ini mulai menjadi salah satu program unggulan dalam pembangunan daerah. Pembangunan pariwisata tersebut diharapkan mampu memberikan kontribusi terhadap penerimaan Pendapatan Asli Daerah (PAD) dan menciptakan lapangan kerja di daerah. Salah satu kabupaten yang memiliki potensi wisata adalah Kabupaten Bangka. Kabupaten Bangka memiliki sumber daya alam yang potensial dan menarik untuk dikembangkan sebagai tujuan wisata seperti kawasan pantai, sumber air panas, peninggalan sejarah, serta kawasan gunung dan perbukitan. Penelitian ini bertujuan untuk merumuskan model pengembangan pariwisata berbasis masyarakat di Kabupaten Bangka terutama di kawasan Pantai Rambak dan Pantai Rebo. Adapun metode yang digunakan adalah metode kualitatif dengan melibatkan 20 orang informan, dengan teknik wawancara mendalam dan focus group discussion. Hasil penelitian ini menunjukkan adanya model pengembangan pariwisata yang diusulkan dengan menggunakan pendekatan pengembangan masyarakat. Pengembangan pariwisata di kawasan Pantai Rambak dan Pantai Rebo pada dasarnya merupakan potret upaya pengembangan sektor pariwisata di Kabupaten Bangka secara keseluruhan. Kajian ini dilakukan untuk menghasilkan sebuah model alternatif yang dapat diterapkan dalam pengembangan pariwisata di wilayah Kabupaten Bangka. Adapun model pengembangan pariwisata tersebut dapat dilihat dalam beberapa tahapan, antara lain: tahap awal (beginning), tahap pertengahan (middle), dan tahap lanjutan (advanced). Dari ketiga tahapan tersebut, terdapat pergeseran strategi, dari strategi direktif menuju ke strategi non-direktif. Pendekatan direktif merupakan pembentukan budaya pariwisata di masyarakat. Sedangkan pendekatan non-direktif merujuk pada budaya pariwisata yang telah tertanam dalam aktifitas kehidupan masyarakat, serta kesadaran dari masyarakat untuk menjaga keberlangsungan sumber daya alam di sekitarnya. Kedua pendekatan tersebut (direktif dan non-direktif) menekankan pada pelibatan penuh kepada masyarakat dalam proses pengembangan pariwisata.
KONSTRUKSI SOSIAL ATAS PERAN MADRASAH DALAM UPAYA PENCEGAHAN PERILAKU SEKS BEBAS PADA REMAJA DI MA. AL-ITTIHAD PONCOKUSUMO MALANG
Authors: Saadah Lailatus , Towaf Siti Malikhah , Sukamto Sukamto
Published: January 2019

Perkembangan psikis remaja yang tidak adapt dikontrol seringkali menyebabkan remaja melakukan hal yang menyimpang dari nilai dan norma yang berlaku di masyarakat. Hal tersebut seringkali tidak disadari oleh para remaja. Hal menyimpang yang terjadi diusia remaja tidak terlepas dari perilaku seks bebas. Dalam hal ini lembaga pendidikan yang berperan penting dalam upaya pencegahan perilaku seks bebas pada remaja adalah madrasah. Metode yang digunakan dalam penelitian ini adalah menggunakan jenis penelitian studi kasus dengan pendekatan kualitatif. Teknik yang digunakan dalam penelitian adalah observasi, wawancara dan dokumentasi. Menurut data yang diperoleh peran madrasah dalam upaya pencegahan perilaku seks bebas pada remaja adalah melalui beberapa pendekatan yaitu pendekatan saat kegiatan pembelajaran dan di luar pembelajaran. Pendekatan ini meberikan dampak yang positif dalam diri remaja yanb bersekolah di MA. Al-Ittihad Poncokusumo Malang.
Role of Multidetector Computed Tomography in Transcatheter Aortic Valve Implantation – from Pre-procedural Planning to Detection of Post-procedural Complications
Authors: Maurovich-Horvat Pál , Vecsey-Nagy Milán , Simon Judit , Szilveszter Bálint , Karády Júlia , Jermendy Ádám , Merkely Béla
Published: January 2019

Transcatheter aortic valve implantation (TAVI) is an effective treatment option for patients suffering from symptomatic, severe aortic valve stenosis. Previously, only patients with prohibitive or high surgical risk were TAVI candidates; however, current guidelines already recommend TAVI as a treatment alternative for patients with intermediate surgical risk. Multidetector computed tomography (MDCT) has gained great importance in the periprocedural assessment of patients who undergo TAVI. Due to the three-dimensional image visualization, MDCT allows the evaluation of anatomical structures in a more comprehensive manner compared to echocardiography, the traditional tool used in TAVI patient work-up. By providing accurate measurements of the aortic root, MDCT helps to avoid potential patient-prosthesis mismatch throughout transcatheter valve sizing. Moreover, MDCT is also a feasible tool for access route evaluation and to determine the optimal projection angles for the TAVI procedure. Although the routine MDCT follow-up of patients is currently not recommended in clinical practice, if performed, it could provide invaluable information about valve integrity and asymptomatic leaflet thrombosis. Post-procedural MDCT can provide details about the position of the prosthesis and complications such as leaflet-thrombosis, aortic regurgitation, coronary occlusion, and other vascular complications that can represent major cardiac emergencies. The aim of the current review is to overview the role of MDCT in the pre- and post-procedural assessment of TAVI patients. In the first part, the article presents the role of pre-TAVI imaging in the complex anatomical assessment of the aortic valve and the selection of the most appropriate device. The second part of the review describes the role of MDCT in patients who underwent TAVI to assess potential complications, some of them leading to a major cardiovascular emergency.
Do Environmental Taxes Pay Off? The Impact of Energy and Transport Taxes on CO2 Emissions in Transition Economies
Authors: Silajdzic Sabina , Mehic Eldin
Published: January 2019

In this paper we investigate the impact of environmental taxes on CO2 emissions in the context of emerging market economies. An attempt has been made to identify what role environmental policy and specific tax policy measures play in understanding the relationship between economic development and environmental degradation. The empirical analysis covers ten Central and Eastern European countries in the period from 1995 to 2015. The latest data on environmental taxes are available only from 1995. We contribute to recent literature in two respects. First, we study this relationship within a dynamic framework in which we take into account the issues of serial correlation and endogeneity in the regressors due to the cointegration relationship. Specifically, we rely on the fully-modified least squares (FM-OLS) estimation technique to model the long-term relationship between income and carbon-dioxide emissions. Second, this paper advances our understanding on the effectiveness of tax policy measures in curbing CO2 emissions, on which we have scarce empirical evidence. The results of this analysis provide rather strong evidence in support of an inverted U-shaped relationship between economic growth and the environment. However, environmental taxes do not seem to be effective in modifying the behaviour of economic agents and in protecting the environment. The results are robust to different models.
Caraş River Gorge Aspects of Salmonids’ Communities Management – Technical Solutions
Authors: Voicu Răzvan , Bănăduc Doru , Greenberg Larry , Curtean-Bănăduc Angela
Published: January 2019

There are many obstacles in rivers that prevent or hinder passage of fish past barriers. Here, we present a specially designed solution for juvenile and adult brown trout so that they may to swim past discharge-regulating weirs in the upper Caraş River in both the upstream and downstream directions. The proposed solution relies on gravity flow and will have current velocities that will not inhibit weak swimmers swimming upstream to pass the weirs. Corrosion-resistant materials and the absence of components that could potentially injure the fish will be used in the construction of these technical solutions. Although testing of the functionality of this solutions for upstream - downstream and downstream - upstream passage of weirs is needed, we believe that if implemented, it should improve connectivity especially for brown trout and consequently conserve within-stream genetic diversity in the Caraş River and where appropriate in alike other Carpathian lotic systems with similar types of weirs.
Optimal Operation and Scheduling of Parallel Machines in Jobshop Environments
Authors: Faccio Maurizio , Nedaei Mojtaba
Published: January 2019

Scheduling of machines together with the optimization of the energy consumption (EC) play a crucial role in every manufacturing system. The current paper aims to present a multi-objective optimization approach for planning and scheduling of a manufacturing system in a job-shop environment. First, an inclusive review and comparison of the latest advancements in this field was performed. Then, a manufacturing system in a job-shop environment, which consists of six designed machines with zero buffer capacity, and 53 jobs, was simulated. Four heuristics for the purpose of sequencing are adopted during the analysis process. A comparison of the optimum results suggested the most efficient values for the EC, make-span, and tardiness. The EC variations and processing time of the machines were studied under sequencing rules to let the designers exploring more efficient solutions, and planning strategies towards enhancing the performance and reliability of studied machines. Next step of this study was to estimate the optimum completion time of each process in the considered manufacturing system and with consideration of the proposed scheduling methods.
The Role of the Universities in Shaping the Entrepreneurial Ecosystem. A Qualitative Approach
Authors: Lina Diana Manuela
Published: January 2019

Studies addressing the concept of entrepreneurial ecosystem generally focus on identifying its constituent elements and less on the interaction between them. To fill this gap, the study’s objective is to explore the interaction between the university and the other components of the entrepreneurial ecosystem, from a semantic perspective. Using the method of qualitative analysis, respectively the semantic analysis method, the study analyses the role of universities from the North East region of Romania in creating the regional entrepreneurial ecosystem through the influence of regional development strategies. The tools used to achieve the proposed objective were bibliometric analysis and the Tropes software. The obtained results reflect the increased interest of the researchers towards the university and its role in the entrepreneurial development of the communities. On the other hand, regional policy documents do not reflect (at least at semantic level) the role that universities have in creating the regional entrepreneurial ecosystem.
Can Marketing Communication Prime You to Act ‘Green’?
Authors: Chwialkowska Agnieszka
Published: January 2019

As popularity of eco-friendly products has increased over the past decade, brands utilize green advertising and position their products as green to appeal to the taste of environmentally conscious customers. Even though many customers are concerned about the state of environment, they are discouraged from purchasing eco-friendly products and engaging in other sustainable behaviors due to economic and social barriers. This research poses a question how marketing communication can capitalize on environmental concern to promote desired green behaviors by priming customers to think about their proenvironmental values and motivations to act green. To answer this question, we analyze over 1500 customer responses to marketing communications on social media. In this content analysis study we utilize logistic regression to discover which primers are the most effective at activating green behaviors. This research provides managerial implications helping marketing communicators employ effective primers that will generate desired customer behaviors.
Genetic variability in Acidithiobacillus spp. – a working horse of environmental biotechnologies
Authors: Pristas Peter , Kiskova Jana , Timkova Ivana , Malinicova Lenka , Luptakova Alena , Kusnierova Maria , Sedlakova-Kadukova Jana
Published: January 2019

The genus Acidithiobacillus comprises 7 species of Gram-negative obligatory acidophilic chemolithotrophic bacteria that derive energy mainly from the oxidation of reduced sulphur compounds. Four of the species also catalyse the dissimilatory oxidation of ferrous iron while three (A. thiooxidans, A. albertensis, and A. caldus) do not. Bacteria from the genus Acidithiobacillus are often associated with mineral biotechnologies (biomining) and acid mine drainage. While acceleration of mineral solubilisation is a positive aspect in environmental biotechnologies, it is undesirable in acid mine drainage with strong negative ecological impact and there is profound interest in genetics and genomics of these bacteria. Representatives of Acidithiobacillus genus occur world-wide, however there are limited data on Acidithiobacillus spp. variability from Slovakia. In our work the variability of Acidithiobacillus spp., from Slovakia was analysed and the presence of A ferrooxidans was detected. In addition, for the first time we report here on the occurrence of A. albertensis as well. Comparative analyses confirmed pronounced genetic and genomic diversity within the genus, especially within A. ferrooxidans and A. thioxidans complexes. Based on data presented, several Acidithiobacillus species could be considered as a complex species and the description of several new species is very probable in the near future.
Determination of selected phenolic acid and majoritarian avenanthramides in different varieties of naked oats (Avena sativa L.) grown in Slovakia
Authors: Kulichová Katarína , Maliarová Mária , Sokol Jozef , Lašáková Katarína , Havrlentová Michaela
Published: January 2019

Oats are important cereals. Oats are a good source of protein and lipids, polyphenolics, phenolic acids, flavonoids and avenanthramides. Avenanthramides is phenolic group, which is unique in oats and have antioxidant activity, anti-inflammatory, anti-atherogenic and anti-proliferative effect. The aim of study is determination of the majoritarian avenanthramides (2c, 2p and 2f) and phenolic acids (p-coumaric and ferulic) in selected varieties of oat (Avena sativa L.) grown in two consecutive years using the HPLC method. The oats were exposed to ultrasound supported extraction (two 15 min cycles).The simultaneous separation was performed using C18 type of stationary phase. The method showed a good linearity in the concentration range 0.04 - 5.24 μg/mL for p-coumaric acid, 0.04 - 5.13 μg/mL for ferulic acid, 0.19 - 24.5 μg/mL for avenanthramide 2c, 0.53 - 17.1 μg/mL for avenanthramide 2p, 0.8 - 25.6 μg/mL for avenanthramide 2f. Correlation coefficients were higher than 0.9997. Detector operated at a wavelength 320 nm. The repeatability of the method was evaluated in three concentration levels with satisfactory results for each analyte. The content of both phenolic acids is significantly lower (50- - 100-times) compared to the total content of avenanthramides in both years’ harvests for all analyzed varieties. Content of total avenanthramides was the highest in varieties Racoon (723.28 mg/kg) followed by Oliver (578.59 mg/kg) and Kamil (384.17 mg/kg).