bluuebunny/crossref_metadata_2025 huggingface dataset:
A Learning Curve Model Accounting for the Flattening Effect in Production Cycles
Authors: Ritschel Jonathan , Badiru Adedeji , Koschnick Clay , Elshaw John , Boone Evan
Published: March 2021

We investigate production cost estimates to identify and model modifications to a prescribed learning curve. Our new model examines the learning rate as a decreasing function over time as opposed to a constant rate that is frequently used. The purpose of this research is to determine whether a new learning curve model could be implemented to reduce the error in cost estimates for production processes. A new model was created that mathematically allows for a “flattening effect,” which typically occurs later in the production process. This model was then compared to Wright’s learning curve, which is a popular method used by many organizations today. The results showed a statistically significant reduction in error through the measurement of the two error terms, Sum of Squared Errors and Mean Absolute Percentage Error.
On the continuous action of enriched lattice-valued convergence groups: Some examples
Authors: Ahsanullah T.M.G. , Al-Thukair Fawzi , Al-Mufarrij Jawaher
Published: March 2021

Starting with a category SL-CONVGRP, of stratified enriched
cl-premonoid-valued convergence groups as introduced earlier, we present a
category SL-CONVTGRP, of stratified enriched cl-premonoid-valued convergence
transformation groups, the idea behind this category is crept in the notion
of convergence transformation group - a generalization of topological
transformation group. In this respect, we are able to provide natural
examples in support to our endeavor; these examples, however, stem from the
action of convergence approach groups on convergence approach spaces, and
the action of probabilistic convergence groups under triangular norm on
probabilistic convergence spaces. Based on the category of enriched
lattice-valued convergence spaces, a Cartesian closed category that enjoys
lattice-valued convergence structure on function space, we look into among
others, the lattice-valued convergence structures on the group of
homeomorphisms of enriched lattice-valued convergence spaces, generalizing a
concept of convergence transformation groups on convergence spaces,
obtaining a characterization.
Determining crossing numbers of the join products of two specific graphs of order six with the discrete graph
Authors: Stas Michal
Published: March 2021

The main aim of the paper is to give the crossing number of the join product
G* + Dn for the connected graph G* of order six consisting of P4 + D1 and of
one leaf incident with some inner vertex of the path P4 on four vertices,
and where Dn consists of n isolated vertices. In the proofs, it will be
extend the idea of the minimum numbers of crossings between two different
subgraphs from the set of subgraphs which do not cross the edges of the
graph G* onto the set of subgraphs by which the edges of G* are crossed
exactly once. Due to the mentioned algebraic topological approach, we are
able to extend known results concerning crossing numbers for join products
of new graphs. The proofs are done with the help of software that generates
all cyclic permutations for a given number k, and creates a new graph COG
for calculating the distances between all (k-1)! vertices of the graph.
Finally, by adding one edge to the graph G*, we are able to obtain the
crossing number of the join product of one other graph with the discrete
graph Dn.
EFEITO DAS CINZAS DO BAGAÇO DE CANA-DE-AÇÚCAR E BAMBU SOBRE QUALIDADE DE FIBROCIMENTOS EXTRUDADOS
Authors: Da Silva Mateus Alexandre , Vilela Alan Pereira , Eugênio Tony Matheus Carvalho , Silva Danilo Wisky , Mendes Rafael Farinassi
Published: March 2021

As cinzas destacam-se entre os resíduos dos processos agroindustriais resultantes da geração de energia. Muitas destas cinzas possuem reatividade pozolânica, as quais podem ser utilizadas como adição mineral em matrizes de cimento Portland. Por meio da presente pesquisa objetivou-se avaliar as propriedades físico-mecânicas proporcionadas pela utilização de granulometrias distintas da cinza do bagaço de cana-de-açúcar e de bambu em substituição parcial ao cimento Portland utilizado na produção de fibrocimento. As cinzas, separadas por dois intervalos granulométricos, substituíram o cimento Portland CPV-ARI em 2%. Os corpos de prova foram produzidos por extrusão, passaram pelo processo de cura durante 28 dias, e, por fim, foram submetidos à testes físicos e mecânicos. A adição de cinzas foi benéfica e, de forma geral, os tratamentos modificados não se diferenciaram estatisticamente do tratamento controle. O tratamento com adição de cinzas do bagaço de cana-de-açúcar com granulometria inferior a 0,074 mm apresentou maior densidade aparente e, consequentemente, maior resistência, sendo necessária a aplicação de uma maior quantidade de energia para levá-lo à ruptura. O tratamento com adição de cinzas do bambu com granulometria inferior a 0,074 mm apresentou maior índice percentual de porosidade, que resultou em uma maior absorção de água, tornando sua aplicação menos vantajosa.
«Luis Cernuda y Friedrich Hölderlin: traducción, poesía y representación», de Javier Adrada de la Torre
Authors: García Suárez Jaime
Published: March 2021

Reseña del libro Luis Cernuda y Friedrich Hölderlin: traducción, poesía y representación (Granada, Comares, 2021), de Javier Adrada de la Torre. Estudio en profundidad del efecto que tuvo en la vida y obra de Cernuda la traducción que el poeta hizo de Hölderlin.
PENGAWASAN KEPADA KLIEN PEMASYARAKATAN (Tantangan dan Alternatif Penyelesaian)
Authors: Tahamata Yuniati Maryana
Published: March 2021

This study aims to determine the implementation of the supervision of prisoners on parole by the Community Guide. This research used descriptive qualitative method with data collection techniques in the form of observation and supported by literature studies. A prisoner undergoing parole needs to be supervised to ensure that there is no violation of the provisions of the guidance contract agreed upon by the client and the community advisor at the beginning of the mentoring period. Community Advisors as law enforcement officials are tasked with carrying out this supervision. In its implementation, there are several obstacles experienced by community counselors related to the background and competence of officers, high workloads, and coordination between community counselors and law enforcement officials. Community involvement strongly supports the successful achievement of program objectives because parole is implemented in the community. Analysis of the needs of community counselors is also needed to increase the effectiveness and professionalism of officers.
Belleza y atracción en traducción literaria
Authors: Arregui Barragán Natalia , Jolicœur Louis
Published: March 2021

La noción de traducción literaria que les proponemos en estas páginas se cimenta en tres conceptos: la belleza, definida por su relación con el vacío y lo ambiguo, la atracción que ejerce el texto origen sobre el lector-traductor y el efecto provocado tanto por el texto origen como por el traducido. La atracción, estrechamente relacionada con lo que nos gusta, con lo que podríamos denominar el efecto de lo bello, es considerada en estas páginas como el motor de la traducción, en cuanto que el lector-traductor debe ser seducido por el texto que va a traducir, al tiempo que intentar colmar la ausencia que lo interpela. En cuanto al efecto, que hay que saber aprehender si queremos reproducirlo en la traducción, está unido a la coherencia interna del texto, a las huellas del autor, a la ambigüedad inherente a la estética del texto. Resumiendo, el traductor debe consagrase al efecto que produce el texto, una vez haya encontrado su vía y su voz.
Capacitor Energy Variations in MMC Using Harmonics Injection
Authors: Hafeez Kamran , Khan Shahid A. , Van den Bossche Alex , Eddinne Kamel Djamel
Published: March 2021

Modular multilevel converter (MMC) is considered as a good technology for high-voltage direct current (HVDC) transmission systems. It can generate a good quality staircase output voltage waveform due to the cascaded connection of large number of identical sub-modules (SMs). Energy variations in SM capacitor lead to capacitor voltage fluctuations which affect the size and stability of MMC. Traditionally MMC arm voltages are controlled using direct modulation method. The closed loop and open loop compensated modulation methods are implemented to overcome the drawbacks created in direct modulation method. However, these methods rely on the accurate measurements or estimation of SM capacitor voltages. In this paper, capacitor energy variations in MMC based on direct modulation method under three different categories using proportional-resonant (PR) controllers are discussed as (a) pure sinusoidal arm current (b) sinusoidal arm current with addition of large 2nd harmonic (c) sinusoidal arm current with addition of 2nd +4th harmonics. Analytical and simulation results show reduction in capacitor energy variations in MMC while injecting harmonics in the arm currents using direct modulation method.
Analyzing the financial development of the Russian Federation
Authors: SMIRNOV Valerii V.
Published: March 2021

Subject. This article explores the issues related to financial development of the Russian Federation.
Objectives. The article aims to find ways to reduce the uncertainty of the formation of the sphere of monetary relations regarding distribution, redistribution of the social product value and national wealth, and identify the limit of the Russian Federation's financial development.
Methods. The study is based on the systems approach using statistical, cluster, and neural network analyses.
Results. The article actualizes the need to analyze the financial development of the Russian Federation in the context of reducing the uncertainty of the formation of the monetary relations sphere regarding the distribution, redistribution of the social product value and part of the national wealth and its limit identifying.
Conclusions and Relevance. The opportunities identified to reduce the uncertainty of the formation of the monetary relations sphere determine the limit of the financial development of the Russian Federation. The study extend the knowledge and develop the competence of public authorities to make management decisions on the financial development of the Russian Federation.
An investment compliance methodology for electric grid companies
Authors: YAKIMOVA Vilena A. , BEGUN Anastasiya А.
Published: March 2021

Subject. We consider the investment compliance methodology for power grid companies. Objectives. The purpose is to develop a methodology for investment compliance and test it, using the case of a power grid company engaged in investment activities. Methods. The study rests on methods of generalization, systematization, grouping, analysis, working documentation modeling, and planning methods. Results. The developed methodology includes an algorithm for compliance procedures grouped by stage of the life cycle of investment projects, a compliance program, and forms of working documentation. The investment compliance methodology is based on assessment procedures and comparison of information, identification and assessment of the risks of power grid companies, methods of investment analysis and predictive audit. Conclusions. The proposed methodology enables to review the schedule of works according to approved deadlines, to confirm the investment value, and to assess the accuracy of macroeconomic indicators that are chosen as a basis for evaluating the economic efficiency of projects.
SINKRONISASI KOMPETENSI MAHASISWA DENGAN KOMPETENSI TUNTUTAN SEKOLAH DALAM PELAKSANAAN PPL DI SEKOLAH DASAR DI DAERAH PERBATASAN
Authors: Vlorensius Vlorensius , Annisa Muhsinah
Published: March 2021

Tujuan penelitian ini adalah untuk menganalisis kesinkronan kompetensi mahasiswa FKIP Universitas Borneo Tarakan dengan kompetensi tuntutan sekolah dalam pelaksanaan PPL di sekolah dasar di daerah perbatasan. Pendekatan metode penelitian ini adalah deskriptif kuantitatif, sedangkan jenis penelitian ini adalah penelitian survey. Teknik pengambilan data pada penelitian ini adalah dengan wawancara, dokumentasi dan penyebaran angket pada guru dan kepala sekolah di sekolah dasar tempat pelaksanaan PPL yang berjumlah 15 sekolah. Hasil penelitian ini secara umum yaitu kesesuaian kompetensi kebutuhan sekolah dan kompetensi mahasiswa adalah  sesuai, hal ini didasari pada hasil angket tentang pelaksanaan PPL secara umum 34.3% (sangat setuju) dan 61.3% (setuju), pada kompetensi pedagogik 13.3% (sangat baik) dan 56.4% (baik), pada kompetensi sosial 67.3% (sangat baik) dan 23.6% (baik), pada kompetensi profesional 30.5% (sangat baik) dan 54.5% (baik), dan kompetensi keahlian 12.7% (sangat baik) dan 50.5% (baik). Kata kunci : Kompetensi mahasiswa, Kompetensi tuntutan sekolah, Daerah perbatasan, PPL
DIAGNOSTIK KESULITAN BELAJAR IPA SISWA SMPN KABUPATEN SUMENEP DENGAN ANALISIS DISKRIMINAN
Authors: Anekawati Anik , Habibi Habibi , Sayyida Sayyida
Published: March 2021

Salah satu penyebab siswa gagal dalam mengikuti mata pelajaran IPA adalah guru sulit mendiagnosa jenis-jenis kesulitan siswa. Tujuan dari penelitian ini adalah : (1). Mengidentifikasi kesulitan belajar IPA siswa SMPN di Kabupaten Sumenep; (2). Mengembangkan model tes diagnostik kesulitan belajar mata pelajaran IPA pada siswa SMP yang efektif; (3). Menganalisis jenis kesulitan belajar yang berpengaruh terhadap ketuntasan belajar IPA pada siswa SMP; (4). Menganalisis jenis kesulitan belajar yang paling mampu membedakan antara kelompok siswa yang tuntas dengan kelompok siswa yang tidak tuntas belajar dengan menggunakan analisis diskriminan.Variabel prediktor sebanyak 10 yaitu : mendefinisikan konsep,  menginterpretasi data atau grafik, memahami hubungan spatial, memprediksi, mengontrol variabel, membuat hipotesis, menggunakan dan memanipulasi angka-angka, menyimpulkan, memilih alat eksperimen, melakukan eksperimen. Variabel Respon yaitu ketuntasan belajar IPA. Tahapan penelitian dilakukan didasarkan pada tujuan dan desain penelitian yaitu : (1). Mengidentifikasi kesulitan belajar IPA melalui FGD I; (2). Mendesain tes diagnostik melalui FGD II dengan materi tes adalah IPA terpadu (3). Mengimplementasikan tes diagnostik kesulitan belajar IPA; (4). Menganalisis hasil tes menggunakan analisis diskriminan.Hasil penelitian ini adalah : (1). Hasil identifikasi kesulitan belajar yang sering terjadi pada siswa di Sumenep adalah kurang membaca, sulit memahami konsep, sulit menyimpulkan data percobaan, sulit membaca grafik, sulit menghafal istilah-istilah biologi; (2). Desain tes diagnostik kesulitan belajar dengan materi IPA Terpadu (integrative science) sebanyak 10 soal essay denga rentang nilai 0-10. Nilai 10 diberikan jika mampu menjawab benar disertai dengan alasan benar, hingga skor 0 jika tidak menjawab atau jawaban sama sekali salah. Bentuk tes mengadopsi model tes PISA (Programme for International Student Assessment) yang dikembangkan oleh OECD (Organization for Economic Operation and Development) tahun 2012; (3). Jenis Kesulitan yang mempengaruhi ketuntasan belajar adalah menginterpretasi data dan grafik, memahami hubungan spatial dan memilih alat eksperimen; (4). Jenis kesulitan belajar yang mampu membedakan kelompok siswa yang tuntas dan tidak tuntas belajar adalah memahami hubungan spatial dan memilih alat eksperimen. Dari 124 siswa yang tuntas belajar, terdapat 83 siswa sesuai prediksi dan 41 siswa masuk pada klasifikasi yang salah. Dari 189 siswa yang tidak tuntas belajar, terdapat 107 siswa sesuai prediksi dan 82 siswa masuk pada klasifikasi yang salah.
PENERAPAN PEMBELAJARAN KOOPERATIF MODEL GROUP INVESTIGATION (GI) PADA POKOK BAHASAN SIFAT DALAM PERUBAHAN KIMIA DAN FISIKA KELAS VII DI MTS SAYYID YUSUF KECAMATAN TALANGO
Authors: Herowati Herowati , Meita Nisfil Maghfiroh
Published: March 2021

Penelitian ini bertujuan untuk untuk menerapkan pembelajaran kooperatif model Group Investigation (GI), sebagai suatu upaya perbaikan dan peningkatan proses pembelajaran. Metode penelitian menggunakan Penelitian Tindakan Kelas yang dilaksanakan dengan mengikuti prosedur penelitian berdasarkan pada prinsip Kemmis S, MC Toggar R (1988) yang mencakup kegiatan perencanaan (planning), tindakan (action), observasi (observation), refleksi (reflection) atau evaluasi. Keempat kegiatan ini berlangsung secara berulang dalam bentuk siklus. Penelitian ini dilakukan dengan cara berkolaborasi antara dosen FKIP Prodi Pendidikan IPA dengan guru bidang studi IPA kelas VII MTs Sayyid Yusuf Kecamatan Talango. Subyek penelitian ini adalah siswa kelas VII yang berjumlah 35 siswa. Teknik pengumpulan data yang digunakan adalah observasi, wawancara, tes, catatan lapangan dan dokumentasi. Sedangkan analisis data meliputi reduksi data, paparan data, dan penarikan kesimpulan.Hasil penelitian menunjukkan bahwa (1) kinerja belajar siswa meningkat setelah pembelajaran IPA menggunakan pembelajaran kooperatif model Group Investigation (GI). Siswa sangat antusias membahas topik dalam diskusi, dan berusaha menjawab dan menemukan informasi tentang topik tersebut. Siswa saling berebut mengemukakan informasi (apa yang mereka ketahui) tentang topik. Setelah dilakukan pembagian tugas, kelompok siswa bekerja sesuai dengan tugasnya masing-masing; (2) prestasi belajar siswa dari aspek kognitif mengalami peningkatan sebesar 11,16. Pada siklus pertama nilai rata-rata siswa adalah 69,44 dan meningkat pada siklus kedua menjadi 80,60. Sedangkan hasil belajar siswa dari aspek afektif juga mengalami peningkatan sebesar 13,9. Pada siklus pertama nilai rata-rata siswa sebesar 68,57 meningkat menjadi 82,47 pada siklus kedua; (3) hambatan yang muncul dalam penerapan pembelajaran kooperatif Group Investigation (GI) yaitu (a) siswa belum terbiasa belajar dengan pembelajaran kooperatif Group Investigation (GI)  sehingga guru bidang studi IPA masih kesulitan dalam merangsang siswa untuk aktif; (b) keterbatasan waktu dalam pelaksanaan penelitian; (c) minimnya sarana dan prasarana yang mendukung proses pembelajaran kooperatif Group Investigation (GI) khususnya. Berdasarkan nilai yang diperoleh siswa dapat disimpulkan bahwa pembelajaran kooperatif model Group Investigation (GI), dapat digunakan pada penelitian tindakan kelas.
Rare-earth elements in the ore of the Bukukinskoye tungsten deposit (the Eastern Transbaikalia)
Authors: Yurgenson G. A.
Published: March 2021

Research subject. This study investigated the mineral association of quartz-wolframite veins of the Bukukinskoye tungsten deposit, with a particular focus on the content of rare-earth elements and their carrier minerals, their chemical composition and the distribution of light and heavy lanthanides. Materials and methods. The chemical composition of two groups of samples containing different ore minerals, as well as the mineral composition of ores was investigated on 143 samples in thin and polished sections using an AXIO ScopeAI optical polarizing microscope and a LEO 1430 VP scanning electron microscope. Chemical examination of ores was carried out using the ISP MS method. Results. The study of the chemical composition of group samples determined that the content and distribution of REE, the ratio of light and heavy lanthanides in ores depends on the ratio of wolframite and other ore minerals, associated with fluorite and apatite. The main REE concentrator mineral in the wolframite-sulfide-quartz ores of the Bukukinskoye deposit is monazite-(Ce) containing (wt %) Ce (27.09–31.59) La (13.13–17.67), Nd (5.59–10.26), Pr (up to 2.86), Sm (up to 1.14), Th (up to 6.59). Conclusion. The obtained results confirmed our earlier findings for the wolframite of the Sherlova Gora that an increase in the concentration coefficient of heavy lanthanides depends on a decrease in their ionic radius. The contents, mineral forms and ratios of REE of the cerium and yttrium groups in the ore of the Bukukinskоyе deposit can be typochemical signs of greisen tungsten deposits, thus being useful for typification of ore formation in geological forecasting and prospecting.
Identification of Sand Mineral Content at Beach Tourist Attractions in Sampang Regency through X-Ray Fluorescence and X-Ray Diffraction Testing
Authors: Joni Idon , Ariyanto Sandi Vikki
Published: March 2021

Research on the natural mineral content in Sampang Regency has been conducted, namely Camplong Beach, Nepa Beach, and Mandangin Island. The XRF results show that the silica mineral content in Camplong sand at a depth of 0.5 m, 1 m, and 1.5 m are 54.6%, 53.2%, and 57.0%, respectively. Nepa sand shows the highest mineral content is calcium. The calcium content at a depth of 0.5 m, 1 m, and 1.5 m are 51.7%, 58.3%, and 63.0%, respectively. Mandangin Island sand shows the highest calcium content that are 94.69%, 94.65%, and 94.98%, at a depth of 0.5 m, 1 m, and 1.5 m, respectively. XRD test results show that in Camplong sand at a depth of 0.5 m, 1 m, and 1.5 m, SiO2 phase < 94% is formed. In Nepa sand at a depth of 0.5 m, 1 m, and 1.5 m, the SiO2 phase < 80% is formed. For Mandangin Island beach sand with a depth of 0.5 m, 1 m, and 1.5 m, the CaCO3 phase > 90% is formed. This study's results can determine the mineral content of sand, which can be used as a high-tech material to minimize illegal mining.
Determination of Climate Factors in Flood and Drought Disaster in Indonesia using Instrumental Variable (IV) Methods
Authors: Faradiba Faradiba
Published: March 2021

Located in the Southeast Asia region, Indonesia has rainy and dry seasons. In the rainy and dry seasons that occur in Indonesia, often causes many problems in various business sectors and community activities, including floods and droughts. It is known that the disaster will have an impact on material and non-material losses. This study uses climate data and disaster data at the village level to determine the effect of rainfall on disasters. This study uses the instrumental variable method because the model has endogeneity problems. The study results concluded that increased rainfall had a positive impact on flood disasters with a coefficient of 0.003038. Simultaneously, rainfall also impacted drought with a coefficient of -0.000377.Â  Variables in the regression model that are formed can explain 1.74 percent of the flood disaster and 0.59 percent of the drought disaster. These results indicate that most of the other variables can influence flooding and drought. Through this research, it is known that rainfall for floods and droughts is quite significant. Therefore, government and community efforts are needed to anticipate similar disasters.
Evaluation on dry forage yields and nutritional characteristics of introduced herbaceous legumes in Myanmar
Authors: Gyue Gyue , Hline Nang Kham , Aye Nan Thida , Hein Bo , Naung Myo Thet , Thura Myo , Myint Htun , Thein Soe Min , Oo Lwin Naing , Htun Moe Thida , Mu Khin San , Aung Aung
Published: March 2021

The study was carried out to evaluate the forage yields, nutritive values and in vitro fermentation parameters of herbaceous legumes. Five varieties of introduced herbaceous legumes; Stylosanthes guianensis cv. Ubon stylo, Macrotyloma axillare cv. Archer, Centrosema brasilianum cv. Ooloo, Stylosanthes guianensis cv. Stylo 184 and Macroptilum bracteatum cv. Cadarga were evaluated at the research farm, University of Veterinary Science, Yezin, Myanmar. No fertilizer and no irrigation were applied for cultivation to test drought resistance. Dry forage yield, nutritive values and gas production at four harvesting times were measured with 4×5 factorial arrangement (5 legumes and 4 harvesting time) in randomized complete block design. There was no interaction between legumes and harvesting time on forage yield, nutritive values and fermentation parameters but they were affected by the main effects of legume types and harvesting time. Among the legume forages, the highest dry forage yields were found in Ooloo, Ubon stylo, and Stylo 184, and followed by the DM yield of Archer and Cadarga. The DM yield of the second harvest was significantly higher (p<0.05) than those of the first, third and fourth harvest which were not significantly different from each other. As a chemical composition, the DM content of Archer was lower (p<0.05) than those of other varieties. Among the legumes forages, the lower CP content was found in Cadarga. The higher NDF was observed in Ooloo. Ooloo, Ubon stylo and Cadarga showed higher ADF in comparison with the other two varieties. Among the harvesting time, the lowest DM content was found at the first harvest. The highest CP content was found at third harvest. The NDF content was not significantly different. The lowest ADF content was found in fourth harvest. According to the dry forage yield, Ubon stylo and Ooloo had the highest dry forage yield and in term of nutritive values, Stylo 184 and Archer had higher nutritive values. As the main effect of forages, Stylo 184 and Archer had higher gas production in comparison with the other varieties. As the main effect of harvesting time, the fourth harvest had the highest gas production in comparison with other harvesting time. It could be better for cultivation by application of fertilizer and irrigation to get more forage yield and quality.
Harry Potter como recurso didático para o ensino da Ditadura Civil-Militar Brasileira (1964-1985)
Authors: Radünz Roberto , Zanela Victória
Published: March 2021

A série Harry Potter consolidou-se como fenômeno literário e cinematográfico. Os livros e filmes nos apresentam um mundo que existe paralelamente ao real, um mundo bruxo com seus próprios costumes e estruturas. Na ficção escrita por J.K. Rowling, o mundo bruxo passa pelo processo de criação de um governo ditatorial que se assemelha às experiências reais da História do Brasil ocorridas no período de 1964 a 1985, isto é, quando o país viveu a Ditadura Civil-Militar. O tema em questão dialoga com a História do Tempo Presente e os debates já bastante consolidados a respeito do uso do cinema em sala de aula. O presente trabalho busca analisar as semelhanças referidas acima, a fim de utilizá-las como recurso didático nas aulas de História. Além da análise de semelhanças e diferenças entre ficção e realidade, serão abordadas algumas sugestões que poderão ser amplificadas pelos professores para sua utilização em sala de aula no ensino básico.
Desafios da regulação do acesso à assistência hospitalar no Sistema Único de Saúde em uma metrópole norte brasileira
Authors: Alves Taiana Moita Koury , Piani Pedro Paulo Freire , Barroso Regina Fátima Feio , Cunha Carlos Leonardo Figueiredo , De Oliveira Paulo de Tarso Ribeiro
Published: March 2021

Objetivo: Analisar o processo da regulação do acesso à assistência hospitalar no Sistema Único de Saúde (SUS), em Belém do Pará, sob a ótica dos usuários e gestores em saúde. Métodos: Estudo descritivo, do tipo estudo de caso, com abordagem qualitativa. As fontes de evidências foram documentais, constituídas por elementos normativos sobre regulação assistencial, artigos científicos, livros e entrevistas semiestruturadas com gestores e usuários do Sistema Único de Saúde. Resultados: Foram realizadas 7 entrevistas, sendo 4 com gestores em saúde que trabalham em regulação do acesso e 3 com usuários do SUS, que estiveram internados no mesmo período. A partir da abordagem qualitativa, realizou-se a análise de conteúdo das entrevistas, sendo extraídas 5 subcategorias, suscitando em proposições ao sistema vigente. Conclusão: Os desafios da regulação do acesso à assistência hospitalar, em Belém do Pará, perpassam pelo conhecimento incipiente de profissionais/gestores envolvidos no processo; a escassa comunicação entre os serviços e/ou profissionais que compõem a Rede de Atenção à Saúde (RAS); a carência e o tempo de espera, alargado, por leito e pela baixa qualidade nos atendimentos dispensados aos usuários do SUS.
TurkStream as Russia’s Last Step in Diversification: A Win-Win Approach
Authors: Erdağ Ramazan
Published: March 2021

This article discusses why Russia replaced the South Stream project with the TurkStream by changing its route and name, and why Turkey is involved in a project on the North-South line although it plays a vital role in the Trans-Anatolia Natural Gas Pipeline (TANAP) project in the southern gas corridor. The article first examines the Russia-Ukraine natural gas crisis. It then moves to analyze the reasons behind Russia’s changing of the name and the route of the South Stream project. After exploring Turkey’s involvement in the project, the article concludes by arguing that both countries adopted a win-win approach toward the project that Russia has gained a significant tariff advantage and freedom from the EU third-party-access rule. The article claims that although both Russia and Turkey have different perspectives on some issues in international politics, they can develop their cooperation with a win-win approach in the TurkStream project.
Upper bounds on mixing rates
Authors: Lieb Elliott H. , Vershynina Anna
Published: March 2021

We prove upper bounds on the rate, called "mixing rate", at which the von Neumann entropy of the expected density operator of a given ensemble of states changes under non-local unitary evolution. For an ensemble consisting of two states, with probabilities of p and 1-p, we prove that the mixing rate is bounded above by 4\sqrt{p(1-p)} for any Hamiltonian of norm 1. For a general ensemble of states with probabilities distributed according to a random variable X and individually evolving according to any set of bounded Hamiltonians, we conjecture that the mixing rate is bounded above by a Shannon entropy of a random variable $X$. For this general case we prove an upper bound that is independent of the dimension of the Hilbert space on which states in the ensemble act.
Development of an Amino Sugar-Based Supramolecular Hydrogelator with Reduction Responsiveness
Authors: Higashi Sayuri L. , Ikeda Masato
Published: March 2021

Stimuli-responsive supramolecular hydrogels are a newly emerging class of aqueous soft materials with a wide variety of bioapplications. Here we report a reduction-responsive supramolecular hydrogel constructed from a markedly simple low-molecular-weight hydrogelator, which is developed on the basis of modular molecular design containing a hydrophilic amino sugar and a reduction-responsive nitrophenyl group. The hydrogel formation ability differs significantly between glucosamine- and galactosamine-based self-assembling molecules, which are epimers at the C4 position, and only the glucosamine-based derivative can act as a hydrogelator.
Photocatalytic Activity of Twist-Angle Stacked 2D TaS2
Authors: Kovalska Evgeniya , Roy Pradip Kumar , Antonatos Nikolas , Mazanek Vlastimil , Vesely Martin , Wu Bing , Sofer Zdenek
Published: March 2021

The development of low-cost efficient photoelectrosensitive electrodes as an alternative to the expensive and complex rigid systems is yet in huge demand for advanced photoresponsive technology. Herein, the light-induced efficiency of electrochemically exfoliated TaS2 nanosheets for hydrogen generation catalysis and photodetectors has been demonstrated for the first time. The electrochemical exfoliation of TaS2 crystals toward a few-layer derivative has been pioneered in anhydrous tetrabutylammonium hexafluorophosphate in N, N-dimethylformamide. Comprehensive analysis of as-exfoliated TaS2 revealed the formation of nanoparticles and nanosheets with a lateral size of about several nanometers and micrometers, correspondingly. Observed mutual twisting of 2H-TaS2 flakes leads to the redistribution of charge density induced by interlayer interaction of the individual nanosheets. External light irradiation on the TaS2 surface influences its conductivity making the material feasible for photoelectrocatalysis and photodetection. The TaS2-based catalyst demonstrates high HER photoelectrocatalytic activity with the onset overpotential below 575 mV vs. RHE which can be lowered by thorough catalyst preparation. Finally, the TaS2-integrated photodetector in the acidic medium represents its broadband light sensing capability with the highest photoresponsivity (0.68 mA W-1 ) toward 420 nm light illumination. This finding will pave the way to a new realization of exfoliated twist-angle stacked TaS2 for photo-induced electrochemistry and sensing
A study to formulate the synthesis and characterization of mixed fruit juice nanoemulsion
Authors: Gayathri K  , Murugavel K  , Karpagavel L  , Manikandan N
Published: March 2021

An advanced mode of drug delivery system will overcome the major drawbacks associated with conventional drug delivery systems. Nanoemulsions are clear, thermodynamically stable mixtures of oil, water, surfactant and co-surfactant. These are the oil-in-water type of emulsions with the average droplet size ranging from 5 nm to 100 nm. Nanoemulsions are thermodynamically stable transparent or translucent dispersions of oil and water stabilized by an interfacial film of surfactant and co-surfactant molecules having a droplet size of less than 100 nm. Parameter that are to be used for its characterization include droplet size analysis, viscosity determination, pH, zeta potential, Morphology by Scanning electron microscopy and thermal stability. Fruits extract of Coccinia grandis, Punica granatum and Phyllanthus emblica Nano emulsion were prepared in the ratio of VCO oil:water:surfactant- 32:36:32 (%w/w). The analyzed particle size of the diluted Nano emulsion droplet was 32.67 nm  and the poly dispersity index of the droplet size was 1.000.  The zeta potential was -15.5mV. The pH value of the freshly formulated Nano emulsion was 6.1  at 250C. All the characterization parameters of mixed fruit juice nanoemulsion were found to be within the standard limits.
A study of In vitro antioxidant and apoptotic effect of citrus medica Linn. leaves (Naarthai) against human gastric adenocarcinoma cell line (ags)
Authors: Suchitra M R  , Danalakshmi G K  , Sampathkumar P  , Sumathi S  , Poornima A  , Parthasarathy S
Published: March 2021

Carcinoma or cancer of the stomach is one of the common malignancies of older men. Numerous methods of treatment options, including herbal and plant products, have been described for its management. The leaves of citrus medica or the naarthai leaves as it has been named traditionally do possess activities in the gastric mucosa. Hence, we decided to extract the phytochemicals from the leaves and find out the antioxidant, cytotoxic potential of the same. After confirmation of the leaves from appropriate authorities, petroleum ether, ethanolic and aqueous extracts of the leaves were made. The IC 50 was found to 200 micrograms and tested for cytotoxicity and apoptotic abilities in the AGS human gastric cell lines. The ethanolic extract showed maximal phytoconstituents. The aqueous extract showed 76.15% of scavenging effect, whereas the ethanolic extract showed 85.33% scavenging activity. Regarding the cytotoxicity effect of C. medica extract on the AGS cell line, it was observed that the percentage of cells was reduced to 50% in the treatment group when compared to the control group. The cells treated with ethanolic leaf extract of C. medica were arrested in G0-G1.  Late apoptosis was significantly increased in the treated group when compared to the control group. The ethanolic leaf extracts of citrus medica possessed antioxidant and anti-cancer properties in gastric mucosal lines. This option can be considered for further production of drugs from such plants.
EPIDEMIOLOGY OF DENGUE HEMORRHAGIC FEVER (DHF) IN SEMANU II PRIMARY HEALTH CENTRE, GUNUNGKIDUL FROM JANUARY-JUNE 2019
Authors: Anggraini Vidya Aries , Sulistyawati Sulistyawati , Purnamawati Desita , Wijayanti Siwi Mars Pramatama
Published: March 2021

Background: Dengue Hemorrhagic Fever (DHF) is a public health problem in Indonesia. The dengue virus causes the disease through mosquito Aedes aegypti bite. This study aims to describe Dengue Hemorrhagic Fever (DHF) in Semanu II Primary Health Centre, GunungKidul, Yogyakarta.Methods: This is a quantitative study with a descriptive approach, describing DHF based variable person, place, and time, using secondary data. Data collection was carried out in August 2019 from secondary data reports SP2TP UPT PuskesmasSemanu II period January-June 2019.Results: Dengue Hemorrhagic Fever (DHF), which occurred in the region of Primary Health Center Semanu II in 2019, was a total of 18 cases with Incidence Rate 72/100,000 population. The majority of cases were found in the age group 6-11 years. 67% of the cases occurred in males. 72% of the cases happened in Pacarejo village. Most of the DHF incidence occurred in March (39%). Conclusions: The incidence of Dengue Hemorrhagic Fever in Primary Health Care Semanu II, most occurred in Pacarejo village, the majority in the age group 6-11 years. Male were the most infected group. And the highest DHF incidence occurred in March 2019
DIFFERENCES OF TODDLER OBESITY BASED ON EXCLUSIVE BREASTFEEDING HISTORY IN TEGALREJO HEALTH CENTER, YOGYAKARTA
Authors: Ayu Suci Musvita , Fa'uni Arini Mayang
Published: March 2021

Background: Obesity is a global problem and continues to affect low and middle-income countries, mainly urban areas. In Indonesia, the obesity rate of children was 11.5% and was ranked 21st in the world by 2016. Even according to WHO, the number of obese children will continue to increase every year. Several studies have shown that a history of exclusive breastfeeding can reduce the risk of obesity in toddlers. This study aimed to determine the differences in the obesity status of children under five based on a history of exclusive breastfeeding in the Tegalrejo Health Center, Yogyakarta City.Methods: This research employed an analytical observational study with a case-control design. The research sample consisted of 34 toddlers aged 6-24 months, calculated using the difference of two proportions: 17 cases of obese children under five and 17 controls under five who were not obese. A questionnaire was used to collect the data. A Chi-square test was used to analyse the data.Results: There were children under five without exclusive breastfeeding in the group of as many as 41.7% and 29.4% in the control group. 52,9% of children in the case group had exclusive breastfeeding, and 70% in the control group. The bivariate analysis showed no difference in the obesity status of children under five based on a history of exclusive breastfeeding with a value of p = 0.480 and OR = 2.133 (95% CI = 0.519-8.751).Conclusions: There was no difference in the obesity status of children under five based on a history of exclusive breastfeeding, but children without a history of exclusive breastfeeding were 2.133 times more likely to have obesity than children with exclusive breastfeeding.
The Application of Case Method in the Teaching of Investment Project Evaluation
Authors: He Yixin
Published: March 2021

Case Method originated in the 1920s and was initiated by Harvard Business School in the United States. At that time, it adopted a unique style of case study, which was based on real situations or events in business management, in this way, it is helpful to cultivate and develop students’ active participation in class discussion. For investment students, specialized courses such as Investment Project Evaluation and corporate finance are concentrated in the upper grades, and in the freshman, sophomore phase has completed the Finance, finance, macroeconomics and other basic courses. On the basis of students’ existing knowledge structure, the course “Investment Project Evaluation” needs to fully tap students’ potential in learning and train students’ practical problem-solving ability, to cultivate students’ thinking ability of combining theoretical knowledge with practical cases, to avoid the teaching mode of “I tell you to listen”, and to guide students to think, analyze and solve problems actively.
Thoughts on the Digital Reading Service of University Libraries in the “Internet+” Era
Authors: Hou Aihua
Published: March 2021

Reading is the main route to impart scientific and cultural knowledge. It is not only related to personal growth, but also closely related to the construction of our society and the prosperity of the nation. University libraries must take on this important responsibility and strengthen the promotion of reading. In the "Internet+" era, university libraries need to focus on how to keep up with the development of the times and provide better digital reading services for teachers and students. The author studies and analyzes the main characteristics of digital reading in university libraries, and proposes the service strategy of digital reading for university libraries in the "Internet+" era, hoping to help with the university libraries playing their roles.
Research on Piano Education in Contemporary China
Authors: Liu Lingran
Published: March 2021

Parents in the education of their children, also pay more attention to piano education, which set off a wave of learning piano upsurge. This paper will analyze the reasons why piano education can present such a strong popularity through the personal practice and preliminary exploration of the current piano education, and make a series of reflections on some problems existing in the current piano education, and then reflect on the current situation of domestic art education.
Analysis of the Female Characters in On the Road
Authors: Liang Yuting
Published: March 2021

On the Road is the masterpiece of Kerouac who is one of the most important writers of “Beat Generation” in America in the mid-20th century. It is acclaimed to be the Bible of “Beat Generation”. The novel narrates the stories of how Dean and his friends——some representative characters of the Beats travelled across continental U.S. several times and searched for new lifestyles and new faith on the road. In this novel, male characters are the main characters and the descriptions of all the female characters account for just one sixth of the whole book. Although the portrayal of the female characters is not profound like that of the male characters, the different personalities Kerouac endued the female characters are also the highlights of the novel. As a novel with strong nature of autobiography, Kerouac put his attitude and emotion into his portrayal. So it also can be a reflection of Kerouac’s female concepts. This paper aims at analyzing the female characters in On the Road by studying the types of the female characters in the novel and summarizing Kerouac’s female concepts reflected from the novel.
Exploring the 21st Century Skills and Science Teaching Pedagogy: Profiles, Readiness, and Barriers
Authors: Djudin Tomo
Published: March 2021

The main objective of this study is to explore the extent of teachers’ readiness in anticipating the demands of 21st century skills and science teaching pedagogy practice. A quantitative survey-descriptive method employed in this study. The sample consists of 120 public primary school teachers in Pontianak. A five responses Likert scale questionnaire comprises 37 items was administered. Data were analysed by using descriptive statistical analysis, the independent t-test, and the extent of readiness was interpreted according to the interval of the overall average score. Based on data analysis, it is found that the total profile of “never and seldom” teachers’ responses is 9.2%, the “often and always” is 20.0%, and “sometimes” is 70.8%. There is no total means score difference between experienced and novice teachers’ performance (t = 0.887, p > 0.05). Moreover, the barrier factors the teachers faced in schools could be categorized as professional development,  personal, institutional, and technological factor. This study concluded that the readiness of public primary school teachers in Pontianak in implementing the 21st century skills and science teaching pedagogy is an insufficient category. In-service teacher training for ICT integration should be directed toward building teachers’ skills and competencies in science pedagogical practices.
The Efforts of the International Financial Institutions in Fighting the COVID‑19
Authors: Zharikov M.
Published: March 2021

The article analyses the periods of socio-economic and socio-cultural cycles. it reveals the factors of interrelating conditions of an economy and a nation’s health. it reconsiders the issues of organizing international assistance programs in various countries. it introduces proposals as to the directions of international aid programs in poor countries of Africa, Asia and Latin America. A major deliverable of the article is the significance of the necessity to break away from the isolation in international relations and deeper cooperation between the nation-states based on the international financial and economic organisations such as the iMF and the World Bank.
“After the Discussion, I am Even More Confident in My Point of View”: An Overview of Studies of Group Polarization
Authors: Nevryuev A. , Gagarina M.
Published: March 2021

The polarization of the population in Russia is reflected in the psychological state of society. The article deals with the phenomenon of “group polarization”. First, we define the phenomenon formulated in the framework of social psychology. Next, we presented the main theories that explain the mechanism of action of this phenomenon. Further, we considered in more detail psychological experiments aimed to study group polarization empirically. Separately, we considered studies that also established the features of group polarization, but were carried out in related social sciences. The examples of recent events that took place in Russia illustrate the process of group polarization in modern society in the period from 2014 to 2020. Based on the described studies, we formulated the need for a more detailed empirical analysis of this phenomenon in the current conditions of society in Russia. Finally, we outlined the main ways related to the study of the connection between group polarization and the psychological state of society and people’s behaviour.
At the Origins of Neo-institutionalism: Ronald Coase
Authors: Nureev R.
Published: March 2021

The article contains the analysis of the views of the Nobel laureate in economics Ronald Coase (1910–2013) as the founder of neo-institutionalism. it provides a comparative description of the “old” and “new” institutionalism and shows the relationship and difference between neoclassicism and neo‑institutionalism. I analysed in detail the most famous articles of Coase and, first of all, “The Nature of the Firm” and “The Problem of Social Costs”. in these works, Coase showed that in the absence of transaction costs there is no economic novelty for the existence of a firm, in the second — that in the lack of transaction costs the legal system does not matter. With an exact specification of property rights, the market economy itself is able to cope with environmental pollution without resorting to government intervention, adjusting taxes and subsidies. The article shows the history of lighthouses in economic theory. Usually, the lighthouse is listed as a purely public good. Ronald Coase shows that even a public good — like lighthouses —was paid for by shipowners. The last part is devoted to essays on economics and economists.
Attitudes Towards Advertising of Banking Loans Among Russians
Authors: Gagarina M. , Vlasenkovab E.
Published: March 2021

The article presents the results of an empirical study of the features of evaluating advertising of banking products. 99 respondents with a different experience of borrowing behaviour, aged 18 to 66, 37 per cent males, were assessed. The respondents were asked to rate, using the semantic differential methodology, two pictures depicting mortgage advertisements from VTB and Otkritie banks. By comparing the average values of the ratings, we found that advertising for banking products is evaluated more negatively, even if the ideal option is presented. Actual advertising images are rated significantly lower than ideal images — people with real experience of taking loans rate advertising for banking products as more benevolent.