bluuebunny/crossref_metadata_2025 huggingface dataset:
COUNTRY-RISK PREMIUM IN THE PERIPHERY AND THE INTERNATIONAL FINANCIAL CYCLE 1999-2019
Authors: Aidar Gabriel , Braga Julia
Published: June 2020

In the context of the pull-push debate on the weight that external or internal factors have on the behavior of capital flows, this article aims to empirically assess the extent to which the push factors linked to global liquidity determine the changes in the risk premium of a set of countries of the periphery in the period 1999-2019. We also test for a structural change in the premium risk series in 2003. We find that push factors play a predominant role (compared to pull factors) in explaining country-risk spreads changes in our selected set of peripheral countries and that there was indeed a substantial general reduction in country-risk premia after 2003. The results are in agreement both with the view that cycles in peripheral economies are subordinated to global financial cycles and also that such global conditions substantially improved compared to the 1990s. 

 

PRIMA DE RIESGO PAÍS EN LA PERIFERIA Y EL CICLO FINANCIERO INTERNACIONAL 1999-2019

RESUMEN

Considerando el debate pull-push sobre la influencia de los factores externos o internos en el comportamiento de los flujos de capital, el objetivo de este artículo es analizar empíricamente el grado en que los factores externos vinculados a la liquidez global afectan los cambios en la prima de riesgo de un conjunto de países de la periferia durante el periodo 1999-2019. También examinamos un cambio estructural en la serie de riesgo de primas en 2003. Así, encontramos que los factores externos desempeñan un papel predominante (en comparación con los factores específicos de cada país) en la explicación de los cambios de riesgo país en los países periféricos seleccionados y que, efectivamente, existió una reducción general sustancial en las primas de riesgo país después de 2003. Los resultados están en línea con la visión de que los ciclos en las economías periféricas están subordinados a los ciclos financieros mundiales y, además, que las condiciones externas han mejorado sustancialmente en comparación con la década de 1990.
Development of Methodology for Evaluating the Brake Disc Cooling System
Authors: Litvinov A. E. , Polyakov P. A. , Polyakova E. A. , Tagiev R. S. , Fedotov E. S. , Golikov A. A.
Published: June 2020

При эксплуатации фрикционного узла в процессе замедления вращения привода на фрикционных парах выделяется большое количество энергии, которая рассеивается в окружающую среду. Через вентиляционный канал благодаря разнице давлений между внутренними и внешними отверстиями проходят потоки охлаждающего воздуха. Габаритные параметры тормозного диска являются определяющими критериями при проектировании, тогда как эксплуатационные показатели вентиляционного аппарата тормозного диска отходят на второй план.Исследования, посвященные определению параметров работы вентиляционного аппарата и разработки критериев его оценки эффективности, практически отсутствуют. На основании обзора литературы по данному вопросу была теоретически обоснована зависимость критерия системы охлаждения, а именно расхода воздуха от конструктивных параметров вентиляционных каналов и эксплуатационных факторов омываемой среды.Одной из разновидностей математического моделирования является метод численного моделирования. С помощью метода конечных элементов в программном продукте ANSYS представлено моделирование работы вентиляционного аппарата с прямыми вентилируемыми каналами и дана оценка эффективности работы вентиляционного аппарата тормозного диска.При изменении геометрических параметров вентилируемых каналов тормозного диска (углы входа и выхода воздушного потока, количество ребер, радиус скругления ребер) оценивались изменения эксплуатационных показателей работы вентиляционного аппарата. В процессе исследований было установлено, что с увеличением угла выхода воздушного потока скорость воздушного потока возрастает и, соответственно, возрастает расход воздуха, проходящего через вентиляционный аппарат. Помимо этого моделировались траектории движения воздушного потока в вентиляционном аппарате тормозного диска. Недостатком данного исследования является отсутствие учета вихреобразования.На основании теоретических исследований и численного моделирования работы вентиляционного аппарата можно сделать вывод, что вынужденного охлаждения недостаточно для эффективного функционирования фрикционного узла в устойчивом тепловом диапазоне. Для этого необходимо определить критерии оценки работы вентиляционного аппарата тормозного диска, выяснить степень влияния конструктивных и эксплуатационных факторов на критерии оценки. В качестве критериев оценки исследователями приводятся такие факторы, как скорость на входе и выходе из вентилируемого канал и расход воздуха, проходящего через вентиляционный аппарат.
Estaria a literatura em perigo?
Authors: Alós Anselmo Peres , Oliveira Juliana Prestes de , Oliveira Amanda Jacobsen de
Published: June 2020

Dividida em 7 capítulos, além da apresentação, prólogo e notas, a obra A literatura em perigo (2009), de Tzvetan Todorov, evoca uma pertinente reflexão sobre o modo como a literatura é trabalhada nas salas de aulas (em especial no contexto universitário). Essa abordagem, para ele, é, muitas vezes, apenas uma discussão sobre textos teóricos que abordam determinado texto literário, sem contato efetivo com as obras literárias, ou como pretexto para estudar outro assunto, ou outra disciplina. Algo que acontece no Ensino Básico, no Brasil, uma vez que a disciplina de literatura possui amarras que a condicionam a relatos dos períodos literários e suas características.
A arte do sensível na docência universitária: narrativas poéticas acerca do brincar de estudantes de pedagogia
Authors: Cardoso Marilete Calegari
Published: June 2020

O estudo aponta as narrativas experipoiéticas como um caminho alternativo para a uma didática lúdica docente e como uma forma de aprendizagens das dimensões sensíveis no ensino superior. Analisa as experiências de estudantes do curso Licenciatura em Pedagogia de uma universidade pública da Bahia, acerca do brincar de crianças. Trata-se de uma pesquisa qualitativa, uma experiência de formação sensível, embasada numa concepção orgânica e estética, mediada por narrativas em forma de poesias e relatos escritos. As análises descritivas foram ancoradas na fenomenologia compreensiva de Michel Maffesoli. Os principais resultados demonstram que: a) os sentidos produzidos pelas graduandas, mediado pelas narrativas experipoiéticas, podem ser reconhecidos como uma formação sensível e de aprendizagem significativa; b) as narrativas das estudantes, em forma de poemas, alteram os experiências/sentidos produzidos acerca do brincar, desse modo, destacamos o papel da arte na docência universitária aguçando a sensibilidade na formação humana.
A láthatatlan (?) kés – Hatalmi viszonyok nyomában az információs korban
Authors: Csótó Mihály
Published: June 2020

Recenzió Carl Miller The Death of the Gods - The New Global Power Grab (William Heinemann, London, 2018, 374 oldal, ISBN 9781785151330) című művéről
Comunicação breve: Elevada frequência de erros na técnica inalatória entre pacientes com DPOC grave: um estudo de vida real
Authors: Souza Guedes Franciane , Hamdan Melo Coelho Margareth , Caldas Embiruçu Lilia Maria , De Miranda Pereira Manoel Henrique , De Queiroz Andrade Graciele , De Farias Rodrigues Fernanda , Santiago Cedraz da Silva Diego , Nunes Vitor Daniela
Published: June 2020

A terapia inalatória tem papel central no tratamento da doença pulmonar obstrutiva crônica (DPOC). O manejo correto dos dispositivos inalatórios é fundamental para deposição pulmonar eficiente dos agentes farmacológicos, e consequentemente, para a efetividade do tratamento da doença.1,2 Entretanto, muitos pacientes podem não utilizar corretamente os inaladores. A técnica inalatória incorreta é associada a desfechos negativos, pior qualidade de vida e maior utilização dos recursos de saúde em pacientes com DPOC.1-4 Dados sobre o manuseio dos dispositivos inalatórios entre indivíduos com DPOC são escassos em nosso meio, sobretudo, no contexto da prática clínica. O objetivo do estudo foi avaliar o domínio da técnica entre pacientes com DPOC grave em uso de dois diferentes dispositivos inalatórios (Respimat® e Diskus®).
Blockchain and Accounting Governance: Emerging Issues and Considerations for Accounting and Assurance Professionals
Authors: Smith Sean Stein , Castonguay John “Jack”
Published: June 2020

Blockchain technology has been a disruptive force in currency, supply chain, and information sharing practices across a variety of industries. Its usage has only recently expanded into assurance and financial reporting. This paper explores blockchain's impact in these areas and provides guidance for organizations and auditors utilizing blockchain by addressing financial data integrity issues, financial reporting risks, and implications for external auditors and firms' corporate governance practices. Organizations utilizing blockchain must adapt their policies and procedures over internal controls and counterparty risk assessment to address increasing regulation over the distribution of financial data, while their audit committees must be prepared to address these challenges leading up to financial statement preparation. External auditors need to assess blockchain implementation as a financial reporting risk and balance the potentially more reliable and timelier audit evidence obtained from blockchain-based reporting systems against the related increase in internal control testing.
VERBAL AND NON-VERBAL CREATIVITY AND TOLERANCE
FOR UNCERTAINTY OF PSYCHOLOGICAL STUDENTS
Authors: Kondrashikhina Oksana Alexandrovna , Tikhomirova Irina Aleksandrovna
Published: June 2020

The article contains results of diagnostics of creativity and tolerance to the uncertainty of psycholo-gy students. An analysis of statistically significant differences in creativity (originality and uniqueness) in students with different levels of uncertainty tolerance showed that students with an average level of to-lerance for uncertainty have higher creativity rates than students with a high level of tolerance for uncer-tainty. On the one hand, these students are characterized by a certain ability to perceive new, ambi-guous, unstructured situations, not as a threatening factor, but as a challenge-containing situation, with-out experiencing pronounced negative emotions. On the other hand, these students are characterized by optimal emotional inclusion, increased activation, a desire to overcome uncertainty, as well as a certain, constructive “intolerance” to uncertainty. This contributes to the production of attempts to solve the situ-ation, find a solution to the problem, activates the creative potential of the person.
Privatization in State-Owned Enterprises: A Systematic Literature Review
Authors: Rosyda Salma Shofia , Raharja Sam'un Jaja
Published: June 2020

One of the effective ways to improve the governance of State-Owned Enterprises (SOEs) is through privatization. A common problem that occurs at present in SOEs is that state-owned companies are inefficient in the use of resources, especially labor. The purpose of this research is to comprehend what is important in privatization, using the Systematic Literature Review (SLR) method. Some things that are important in the privatization of State-Owned Enterprises include privatization performance based on privatization activities, success factors, CSR in privatized SOEs, and performance after reducing government ownership. An improvement of performance both in terms of attainment and income along with a decrease in CSR were likely experienced by SOEs when privatizing. In addition, this research was also conducted to find out whether there were parts that had become worse after privatization. The privatization of SOEs was carried out by modernizing the economy. The decrease in performance of CSR could be minimized by social activities carried out by the company. The role of the government was very important in the supervision of SOEs so no one was able to gain personal benefit. The involvement of stakeholders was very important in this process because it could increase the trust of shareholders. During privatization, cooperating partners had to guarantee that there would be no termination of workers. In fact, it was hoped that more workers were to be added.
Asuntos de vecinos: langosta, defensa agrícola y la construcción de la sanidad vegetal en México y Centroamérica, siglo XX
Authors: Ortiz Yam Inés , Zuleta María Cecilia
Published: June 2020

El presente artículo estudia el combate de las plagas de langosta en México y Centroamérica en la primera mitad del siglo XX. De entre otras, la más importante plaga de langosta ha sido la de Schistocerca piceifrons Walker, plaga transfronteriza, compartida entre estos países vecinos desde tiempos prehispánicos. El artículo estudia la lucha contra este acridio en dos momentos: primero, uno nacional, en México, en la década de 1920, que se enfoca principalmente en las campañas contra la langosta en Yucatán y Veracruz; y después, un segundo momento, mexicanocentroamericano, entre 1940-1950, con la formación del Comité Técnico Internacional de lucha contra la langosta en México y América Central. El análisis de la primera etapa local y nacional de las campañas contra la langosta reconstruye cómo y con qué instrumentos normativos y dispositivos científicos e institucionales se buscó combatir y controlar la plaga en el Golfo y la península de Yucatán, explicando el surgimiento de una política pública estatal y federal destinada a la defensa agrícola. El segundo momento, la campaña mexicanocentroamericana contra el acridio entre las décadas de 1940-1950, se estudia como una experiencia que desbordó los principios y métodos de la defensa agrícola nacional, conduciendo a la creación de organismos de control y supervisión de sanidad animal y vegetal a escala transnacional, a acuerdos intergubernamentales y a la creación de dispositivos e instrumentos de cooperación científica, técnica y sanitaria para toda el área mesoamericana, impulsados por la FAO. El artículo argumenta que la langosta transnacional interconectó diversas biorregiones a su paso, impulsando tanto medidas locales de control como también la normalización nacional y supranacional de políticas de protección y sanidad vegetal y de investigación entomológica aplicada, contribuyendo así al nacimiento de una biogeopolítica agropecuaria en México y América Central.
Sandra Casanova-Vizcaíno e Inés Ordiz (eds.), Latin American gothic in literature and culture. Routledge, New York-London, 2018; 270 pp.
Authors: García Mariano
Published: June 2020

El volumen editado por Sandra Casanova-Vizcaíno e Inés Ordiz se ocupa principalmente del gótico como género literario y cinematográfico en América latina, y, como tal, no puede ser menos que bienvenido. El concepto no es nuevo, pero sí resulta original su estudio en una publicación que busca difundirlo en el mundo anglosajón; hecho que indica cómo se ha ido imponiendo lentamente en la región (según palabras de las editoras) por encima de rótulos casi indelebles durante décadas como el de literatura fantástica o realismo mágico.
Rosales que florecen en el jardín en que se recrea el Divino Esposo: alegoría de una Religiosa
Authors: Marín Berttolini Claudia Cristell
Published: June 2020

La pieza en que se centra este análisis representa a una pequeña oveja que encarna en sí misma la identificación de las religiosas como parte del rebaño sagrado, guiado y protegido por el buen pastor, que habita en el jardín místico del espacio conventual en la promesa de la unión espiritual con Jesucristo. El detalle de la toca blanca y el velo negro remite a la oveja como una religiosa profesa; denotando un carácter de pertenencia a una comunidad conventual, cuya función transita entre lo alegórico, lo identitario y lo ceremonial. La presencia de esta alegoría en el espacio conventual se convierte en una oración mnemotécnica y artesanal llevada a cabo por la religiosa que al elaborar este tipo de piezas se afirmaba como parte del rebaño espiritual de Cristo.
Assessment of Informal Learning Program on Weather Phenomena: Its Perception and Necessity in Greece
Authors: Makri Kyriaki , Galanaki Elissavet , Koletsis Ioannis , Kotroni Vassiliki , Lagouvardos Konstantinos
Published: June 2020

The inadequate approach of the weather phenomena, the associated atmospheric processes as well as their impacts at the Greek education led to the creation of the learning program "Peri Anemon & Ydaton", by the meteorological unit of the National Observatory of Athens. The program, which is presented to Junior High School and High School students, is structured into five thematic sessions and covers eight learning goals, the implementation of which was assessed using a multiple-response questionnaire. In general, the program "Peri Anemon & Ydaton" is a vivid example for the efficiency of informal learning programs. Furthermore, it is the first attempt for the recording of the results as an assessment of an informal learning program on weather and climate in Greece. The learning program "Peri Anemon & Ydaton" is implemented with the approval of the Educational Policy Institute of Greece, thus indicating its pedagogical adequacy
INOVAÇÃO SOCIAL E DESENVOLVIMENTO LOCAL: UMA ANÁLISE DE META-SÍNTESE
Authors: Justen Gelciomar Simão , Morais-da-Silva Rodrigo Luiz , Takahashi Adriana Roseli Wunsch , Segatto Andréa Paula
Published: June 2020

A inovação está constantemente relacionada ao desenvolvimento de novos produtos, serviços e processos capazes de destacar as organizações no cenário competitivo. No entanto, a inovação tradicional nem sempre é capaz de direcionar os olhares para os problemas da sociedade. A partir disso, a inovação social surge como uma nova forma de abordar os problemas sociais por meio da articulação de diversos atores em prol do desenvolvimento local. Considerando esses dois construtos, da inovação social e do desenvolvimento local, que este artigo busca, como objetivo geral, analisar como a inovação social está inserida no contexto do desenvolvimento local. Para este propósito, uma análise de meta-síntese foi realizada com estudos de caso que abordam esses temas e suas interfaces. Os resultados apontam para uma relação entre inovação social e desenvolvimento local, sendo o primeiro elemento necessário para alcançar o segundo. O estudo desenvolvido permitiu o entendimento de que os temas pesquisados se relacionam com base em três pontos principais: (1) A partir de um contexto em que se inserem os atores sociais, cria-se (2) Um cenário propício às ações socialmente inovadoras que são capazes de (3) induzir o desenvolvimento local.
The development and testing of theoretical and methodological approaches to evaluating the impact of informatization in the catch-up economy
Authors: Akhmetov T.R.
Published: June 2020

Subject. The article discusses the specifics of innovative subsystems within national catch-up economic systems, while AI technologies gain momentum.
Objectives. The study evaluates mechanisms the State uses to provide aid to innovative subsystems in national catch-up systems. I determine characteristics of the general mechanism for supporting the transformation of intellectual property into intangible assets in national catch-up economic systems, and unveil distinctions of such systems.
Methods. The study relies upon methods of logic, statistical analysis.
Results. What distinguishes the development of innovative subsystems in national catch-up economic systems and local catch-up socio-economic systems is the focus of the national policy on high-tech export and generation of their own intellectual property to covert it into intangible assets that are usually concentrated by multinational companies of the country.
Conclusions and Relevance. Being the main exporters of high-tech products, multinational companies with national economic subsystems and local catch-up socio-economic subsystems deal with the patent protection of their intellectual property worldwide. The open innovation method is a distinctive characteristic of such subsystems. It proves to be very effective in China, South Korea, Japan as large business and multinational companies rapidly evolve, using their own intellectual property and converting them into intangible assets through the AI technologies.
Penyelenggaraan Sistem Elektronik Pelaku Usaha Digital dari Perspektif Hukum Perizinan dan Aspek Pertanggungjawabannya
Authors: Niffari Hanifan
Published: June 2020

Penyelenggaraan sistem elektronik bagi pelaku usaha digital, pemerintah perlu bertindak untuk pengawasan, pengendalian, dan pengaturan segala aktivitas terkait penyelenggaraan sistem elektronik bagi pelaku usaha digital. Implementasinya, pengawasan dan pengendalian oleh pemerintah dirasa kurang efektif karena penyelenggara sistem elektronik pelaku usaha digital hanya melakukan pendaftaran kepada pemerintah dan sanksi administratif yang diberikan hanya berupa dikeluarkan dari daftar penyelenggara sistem elektronik. Permasalahan muncul karena kurangnya efektifitas pengendalian dan pengawasan bagi penyelenggaraan sistem elektronik pelaku usaha digital. Kerugian yang diakibatkan kesalahan dan kelalaian dalam penyelenggaraan sistem elektronik menimbulkan tanggung jawab hukum bagi penyelenggara sistem elektronik khususnya pelaku usaha digital. Penulisan membahas penyelenggaraan sistem elektronik dari perspektif hukum perizinan dan pertanggungjawaban hukum dalam penyelenggaraan sistem elektronik. Tujuan penulisan ini adalah membahas pengawasan dan pengendalian penyelenggaraan sistem elektronik saat ini dari perspektif perizinan dan mengkaji pertanggungjawaban hukum dalam penyelenggaraan sistem elektronik. Fokus Metode penelitian yang digunakan adalah yuridis normatif. Jenis penelitian menggunakan library research. Pendekatan penelitian menggunakan pendekatan normatif.  Data yang digunakan data sekunder berupa peraturan perundang-undangan dan  teori-teori ahli hukum. Anlisa data menggunakan deskriptif analitis. Penyelenggaraan sistem elektronik perlu dilakukan kajian terhadap perubahan paradigma ke arah instrumen yuridis berupa perizinan melalui keputusan tata usaha negara demi kepastian dan penegakan hukum yang lebih efektif. Hal ini penting karena selain belum diatur, pemerintah harus mencegah dan menetralisir kemungkinan-kemungkinan buruk berupa kerugian dan kejahatan yang ditimbulkan penyalahgunaan kesalahan dalam penyelenggaraan sistem elektronik. Selain perizinan, pertanggungjawaban penyelenggaraan sistem elektronik sangat penting dibahas untuk melihat sejauh mana tanggung jawab hukum penyelenggara sistem elektronik terhadap penyelenggaraan sistem elektroniknya menimbulkan kerugian pengguna dari perspektif perbuatan melawan hukum dan potensi lahirnya strict liability.
Penegakan Supremasi Hukum Melalui Implementasi Nilai Demokrasi
Authors: Idayanti Soesi , Haryadi Toni , Widyastuti Tiyas Vika
Published: June 2020

Tujuan penelitian untuk mengetahui Penegakan hukum pasca reformasi dalam membangun kehidupan yang harmonis, berkeadilan dan berkepastian dalam masyarakat yang tertib ternyata tidak sesuai dengan kenyataan bahwa amanat reformasi dalam penegakan hukum ternyata menjadi sangat memilukan. Penegakan hukum yang bersifat “ tebang pilih “ tak terhindarkan , meski penyebabnya bukanlah faktor politis seperti pada era sebelumnya. Permasalahan yang diangkat dalam penelitian ini adalah bagaimana arah pembangunan hukum dan bagaimana menegakan supremasi hukum berdasarkan nilai – nilai demokrasi. Hasil penelitian menunjukan bahwasanya Supremasi hukum sebagai upaya penegakan hukum dan penempatan hukum pada posisi tertinggi dari segalanya, serta menjadikan hukum sebagai panglima ataupun komandan dalam upaya untuk menjaga dan melindungi tingkat stabilitas dalam kehidupan suatu bangsa dan negara memberikan jaminan terciptanya keadilan bagi masyarakat. Keadilan harus diposisikan secara netral, artinya setiap orang memiliki kedudukan dan perlakuan yang sama tanpa terkecuali. Supremasi hukum merupakan prasyarat mutlak bagi penyelenggaraan kehidupan bernegara berdasarkan kedaulatan rakyat. Tujuan utama adanya supremasi hukum adalah menjadikan hukum sebagai pimpinan dalam menjalankan kehidupan berbangsa dan bernegara, yang mana apabila tujuan tersebut tercapai dapat menghasilkan beberapa hal seperti meningkatkan integritas sumber daya manusia, memberikan keadilan sosial, menjaga nilai moral bangsa, menciptakan masyarakat yang demokratis, serta memberi jaminan perlindungan hak individu dalam bernegara dan bermasyarakat
A choice of surgical approach for osteosynthesis in fractures of the lateral tibial condyle
Authors: Belenky I. G. , Kochish A. Yu. , Kislitsyn M. A. , Mayorov B. A.
Published: June 2020

Intention. To conduct a comparative analysis of the dynamics of the consolidation of intraarticular fractures of the posterolateral parts of the lateral tibial condyle, the anatomical and functional outcomes of surgical treatment of these patients after plate osteosynthesis with traditional anterolateral and posterolateral transfibular surgical approaches as well.

Methodology. A comparative prospective study of the effectiveness of osteosynthesis in patients with fractures of the posterolateral part of lateral tibial condyle in two compatible clinical groups was performed in dynamics for periods of 7–10 days, 1, 3, 6 and 9 months after surgery. In the first group (25 patients), bone osteosynthesis was performed from traditional anterolateral approach (TALA), and in the second group (20 patients), from the posterolateral transfibular approach (PLTFA). The average duration of osteosynthesis operations was compared. The displacements of fragments of the articular surface of the lateral tibial condyle, the indices of the KSS and Lysholm scales, the results of measurements of the angle of flexion and valgus stress test of the knee joint were evaluated. Data processing was performed using the Data Analysis and Chart Master modules (Excel), the Basic Statistics / Tables module (Statistic for Windows) as well.

Results and Discussion. In the PLTFA group, the average operation time was (81.0 ± 8.5) minutes (from 67 to 96 minutes), in the TALA group, the duration of operations was 35.8 % longer and averaged (110 ± 5.2) minutes (from 82 to 125 minutes) (p < 0.05). The values of the KSS and Lysholm scales in dynamics showed a steady and statistically significant (p < 0.01) increase with increasing time after surgery without significant differences between the groups. The angle of flexion of the knee joint increased more rapidly during the first three months, then the rate decreased from 6 to 9 months (p < 0.05) without significant differences between the groups. The frequency of displacements of fragments of the articular surface in the first group was statistically significantly (p < 0.05) higher than in the second group. Differences in the valgus-stress test indices in both groups reached a maximum after 9 months – 52 and 30 %, respectively.

Conclusion. With PLTFA, surgery duration decreases, articular surface fragments are better reduced, and their subsequent displacement at the stages of treatment is less likely; therefore, this approach is preferable for osteosynthesis of fractures of the posterolateral parts of the lateral tibial condyle.
Hydrothermal Synthesis and Solid-State Laser Refrigeration of Ytterbium-Doped Potassium Lutetium Fluoride (KLF) Microcrystals
Authors: Xia Xiaojing , Pant Anupum , Zhou Xuezhe , Dobretsova Elena , Bard Alex , Lim Matthew , Roh Joo Yeon , Gamelin Daniel R. , Pauzauskie Peter
Published: June 2020

Fluoride crystals, due to their low phonon energies, are attractive hosts of trivalent lanthanide ions for applications in upconverting phosphors, quantum information science, and solid-state laser refrigeration. In this article, we report the rapid, low-cost hydrothermal synthesis of potassium lutetium fluoride (KLF) microcrystals for applications in solid-state laser refrigeration. Four crystalline phases were synthesized, namely orthorhombic K2LuF5 (Pnma), trigonal KLuF4 (P3121), orthorhombic KLu2F7 (Pna21), and cubic KLu3F10 (Fm3m), with each phase exhibiting unique microcrystalline morphologies. Luminescence spectra and emission lifetimes of the four crystalline phases were characterized based on the point-group symmetry of trivalent cations. Laser refrigeration was measured by observing both the optomechanical eigenfrequencies of microcrystals on cantilevers in vacuum, and also the Brownian dynamics of optically trapped microcrystals in water. Among all four crystalline phases, the most significant cooling was observed for 10%Yb:KLuF4 with cooling of 8.6 $\pm$ 2.1 K below room temperature. Reduced heating was observed with 10%Yb:K2LuF5
Drug Repurposing and New Therapeutic Strategies for SARS-CoV-2 Disease Using a Novel Molecular Modeling-AI Hybrid Workflow
Authors: Bembenek Scott
Published: June 2020

The recent outbreak of the novel coronavirus (SARS-CoV-2) poses a significant challenge to the scientific and medical communities to find immediate treatments. The usual process of identifying viable molecules and transforming them into a safe and effective drug takes 10-15 years, with around 5 years of that time spent in preclinical research and development alone. The fastest strategy is to identify existing drugs or late-stage clinical molecules (originally intended for other therapeutic targets) that already have some level of efficacy. To this end, we tasked our novel molecular modeling-AI hybrid computational platform with finding potential inhibitors of the SARS-CoV-2 main protease (Mpro, 3CLpro). Over 13,000 FDA-approved drugs and clinical candidates (represented by just under 30,000 protomers) were examined. This effort resulted in the identification of several promising molecules. Moreover, it provided insight into key chemical motifs surely to be beneficial in the design of future inhibitors. Finally, it facilitated a unique perspective into other potentially therapeutic targets and pathways for SARS-CoV-2.
Accelerating Battery Manufacturing Optimization by Combining Experiments, In Silico Electrodes Generation and Machine Learning
Authors: Duquesnoy Marc , Lombardo Teo , Chouchane Mehdi , Primo Emiliano , Franco Alejandro A.
Published: June 2020

Both the society and the market calls for safer, high-performing and cheap Li-ion batteries (LIBs) in order to speed up the transition from oil-based to electric-based economy. One critical aspect to be taken into account in this modern challenge is LIBs manufacturing process, whose optimization is time and resources consuming due to the several interdependent physicochemical mechanisms involved. In order to tackle rapidly this challenge, digital tools able to accelerate LIBs manufacturing optimization are crucially needed for both well assessed and recently discovered chemistries. The methodology presented here encompasses experimental characterizations, in silico generation of electrode mesostructures and machine learning algorithms to track the effect of manufacturing over a wide array of mesoscale electrode properties critically linked to the electrochemical performance. Particularly, features as the interconnectivity of the particles network, the electrolyte tortuosity and effective ionic conductivity, the percentage of current collector surface covered by either active material or carbon-binder domain particles and the active material surface in contact with electrolyte were analysed and discussed in detail. This approach was tested and validated for the case of LiNi1/3Mn1/3Co1/3O2-based cathodes calendering, proving its capability to ease the process parameters-electrode properties interdependencies analysis, paving the way to deeper understanding and then faster optimization of LIBs manufacturing.
Bioinspired Divergent Oxidative Cyclization of Strictosidine and Vincoside Derivatives: Second Generation Enantioselective Total Synthesis of (–)-Cymoside
Authors: Dou Yingchao , Kouklovsky Cyrille , Vincent Guillaume
Published: June 2020

We report our second generation synthesis of (–)-cymoside as well as the formation of a new hexacyclic-fused furo[3,2-b]indoline framework. After a Pictet-Spengler condensation between secologanin tetraacetate and tryptamine, the course of the cyclization of the 7-hydroxyindolenine intermediate generated by oxidation with an oxaziridine, depends on the stereochemistry of the 3-position. The 3-(S)-strictosidine stereochemistry delivered efficiently the scaffold of cymoside via intramolecular coupling with the C16-C17 enol ether, while the 3-(R)-vincoside stereochemistry directed towards the reaction with the C18-C19 terminal alkene and the formation of the unexpected caged compound.
Improved Oxidative C-C Bond Formation Reactivity of High-Valent Pd Complexes Supported by a Pseudo-Tridentate Ligand
Authors: Schultz Jason W. , Rath Nigam P. , Mirica Liviu M.
Published: June 2020

There is a large interest in developing oxidative transformations catalyzed by palladium complexes that employ environmentally friendly and economical oxidizing reagents such as dioxygen. Recently, we have reported the isolation and characterization of various mononuclear PdIII and PdIV complexes supported by the tetradentate ligands N,N’-di-alkyl-butyl-2,11-diaza[3.3](2,6)pyridinophane (RN4, R = tBu, iPr, Me), and the aerobically-induced C-C and C-heteroatom bond formation reactivity was investigated in detail. Given that the steric and electronic properties of the multidentate ligands were shown to tune the stability and reactivity of the corresponding high-valent Pd complexes, herein we report the use of an asymmetric N4 ligand, N-mehtyl-N’-tosyl-2,11-diaza[3.3](2,6)pyridinophane (TsMeN4), in which one amine N atom contains a tosyl group. The N-Ts donor atom exhibits a markedly reduced donating ability, which led to the formation of transiently stable PdIII and PdIV complexes, and consequently the corresponding O2 oxidation reactivity and the subsequent C-C bond formation was improved significantly.
Numerical Simulation of Conservation Laws with Moving Grid Nodes: Application to Tsunami Wave Modelling
Authors: Khakimzyanov Gayaz , Dutykh Denys , Mitsotakis Dimitrios , Shokina Nina Yu
Published: June 2020

In the present article, we describe a few simple and efficient finite volume type schemes on moving grids in one spatial dimension combined with an appropriate predictor–corrector method to achieve higher resolutions. The underlying finite volume scheme is conservative, and it is accurate up to the second order in space. The main novelty consists in the motion of the grid. This new dynamic aspect can be used to resolve better the areas with large solution gradients or any other special features. No interpolation procedure is employed; thus, unnecessary solution smearing is avoided, and therefore, our method enjoys excellent conservation properties. The resulting grid is completely redistributed according to the choice of the so-called monitor function. Several more or less universal choices of the monitor function are provided. Finally, the performance of the proposed algorithm is illustrated on several examples stemming from the simple linear advection to the simulation of complex shallow water waves. The exact well-balanced property is proven. We believe that the techniques described in our paper can be beneficially used to model tsunami wave propagation and run-up.
Концепт війни та миру у промовах Дональда Трампа та Володимира Зеленського
Authors: Shevchuk Oleksandr , Kravchenko Olena
Published: June 2020

У статті здійснюється спроба виокремити концепт війни та миру у президентських промовах Володимира Зеленського та Дональда Трампа та зробити порівняння цих позицій. Для аналізу використовуються інавгураційні промови та промови на Генеральній Асамблеї ООН у вересні 2019 року.

Загальний висновок в результаті роботи полягає в тому, що за наповненістю промови двох президентів є досить схожими за стилістикою та трансльованими меседжами, хоча, звичайно, і мають відмінності.
Росія в контексті зовнішньополітичної стратегії США: політико-дескриптивний аналіз постбіполярних часів
Authors: Dudko Iryna
Published: June 2020

Стаття орієнтована на політико-дескриптивний аналіз зовнішньополітичного курсу США періоду постбіполярних часів. Серед проблем в колі дискусії – фактори, що зумовлювали особливу увагу американського керівництва до Росії від початку постбіполярного світу, а також еволюцію стратегічних підходів США щодо Росії впродовж 1990-2010-х рр., включаючи військову агресію РФ проти Грузії (2008) і України (2014-2020) як етапів формування сучасного стану відносин по лінії США – РФ.
PERSEPSI GURU SEKOLAH DASAR TERHADAP PENGEMBANGAN KARAKTER DALAM PEMBELAJARAN BAHASA INDONESIA
Authors: Rosmalah Rosmalah
Published: June 2020

The purpose of this study was to determine Teacher Perceptions of Character Development in Thematic-Based Indonesian Language Learning in SD Mitra PGSD Watampone. The approach used in this study is a quantitative approach that is descriptive. The results showed the teacher's perception of student character development will have an impact on the ability of teachers to manage a learning that is directed not only to the development of aspects of student knowledge and skills but also facilitate students to have strong character. Character development of students tends to have a high level of difficulty because this aspect is very abstract and requires deep observation. The characters studied include responsibility, honesty, discipline, love and affection, and caring.
The Role of Accounting Policy in the Enterprise Management System
Authors: Myronova Yuliia , Siroshtan Ilona
Published: June 2020

The article describes the essence, purpose of accounting policy and its management orientation. The aspects of accounting process that influence the order of accounting policy formation are investigated: methodical, technical and organizational. The stages of accounting policy formation that are advisable to follow at the enterprise are presented. Investigating the existing problems in the formation of accounting policies of the company, the following ways are proposed to solve them: to improve the regulatory framework, since inconsistencies between the acts prevent the enterprise in the formation of effective accounting policies; bring national standards closer to international standards; consider in detail in the normative documents the nature, advantages and disadvantages of various elements of accounting policies. The importance of subordination of accounting policy elements to the objectives of the management process is proved.
What Factors Can Increase the Supply of Missing Middle Housing Types in Walkable Urban Core Neighborhoods? A Qualitative Study
Authors: H Ojah Maharaj Shrimatee
Published: June 2020

There is a need for a variety of low-rise housing types in walkable urban core neighborhoods. These housing types once existed in the urban core but are now missing. Daniel Parolek (CNU, 2018) proposed bringing back the Missing Middle Housing (MMH) types as one way to increase the supply. However, the risks of regulations, neighborhood opposition to increased densities, and apparent under-capitalization due to financing restrictions deter suppliers (developers) from helping to increase the supply. This qualitative study utilizing a grounded theory approach examines experts and industry leaders in the field supporting the claim that MMH types are “missing.” A risk, risk reduction and capital flow mapping that influence supply emerged at the thematic portion of the research. This research suggests there is a willingness to solve the MMH types issues by mitigating the risks of all three factors of neighborhood opposition to density, lack of developer, and lender interests due to regulation and costs which inhibit supply. Further research is necessary for mitigating the risks and infusing capital with the power brokers, the capital investors, and the suppliers.
Factors Affecting the Supply of “Missing Middle” Housing Types in Walkable Urban Core Neighborhoods
Authors: H Ojah Maharaj Shrimatee
Published: June 2020

Housing preferences are changing. According to (Koebel, Lang, & Danielsen, 2004; Kolson, 2016; Myers & Ryu, 2008; Shaver, 2017; Woo, 2016), the largest demographic, the millennials, prefer low- to mid-rise housing units that are in the walkable urban core areas. These areas have access to cultural activities, entertainment, restaurants, shopping and other amenities such as parks. The retiring baby boomers who are downsizing from their single-family suburban homes are also seeking the same. As suggested by Parolek (CNU. 2015).), the Missing Middle Housing types (MMH) are one possible solution to help meet the demand. However, the demand is greater than the supply (Koebel et al., 2004; Kolson, 2016; Myers & Ryu, 2008; Shaver, 2017). This review discusses the factors that affect the supply of the MMH types. It reveals that although these housing types once existed in the urban core, attempts to reintroduce them in the area meet with opposition from several stakeholders. Additional factors which hurt the supply of MMH types include land use and zoning regulations, a lack of developer interest to develop these units, and a lack of developer financing (Glaeser et al, 2009, Doherty, 2017).
MEASURING CO-MOVEMENT OF REAL INTEREST RATE AND INFLATION RATE: USING VEC APPROACH
Authors: Hossain Md. Rasel , Haque Ahsanul , Hamja Md. Abdullah Amir , Rana M. Shohel
Published: June 2020

It is important to know the future movement of economic variables for the planning and development of a country, Vector Error Correction (VEC) Model has been applied to disclose hidden long run as well as short-run patterns of the selected variables. ADF unit root testing procedure was applied to satisfy the conditions of applying the VEC Model. Using Johansen cointegration test long-run cointegration has been justified. But the VEC model reveals that long run significant causal relationship between the variables whereas there is no short-run causal relationship. The parameter was estimated using the OLS estimation technique. The validity of the model was confirmed by applying different quantitative approaches such as normality test, autocorrelation test, Portmanteau test, Unit root test, and various graphical approaches which suggested model selection and estimation were correct. The result of this present study may help Govt. agencies as well as planners to take an idea.
ANALYSIS OF THE EFFECTS OF SUPERPLASTICIZER ADDITION AND WATER REDUCTION IN CONCRETE MIXTURE ON CONCRETE COMPRESSIVE STRENGTH
Authors: Wiyanti Dwi Sri , Laksono Taufik Dwi
Published: June 2020

Nowadays, concrete is still one of the most used building materials, it had been improved whether in it’s quality or it’s mixture materials. There were a lot of studies that had been conducted to improve concrete that related to the produced compressive strength, stiffening speed, flexibility, etc. There are so many materials that can be used in concrete mixture to improve compressive strength. This study was conducted by using superplasticizer and reducing water amount in concrete mixture and aimed to find out how big it’s effects on the produced concrete compressive strength. Superplasticizer was used as admixture material wtih 1 percentage calculated by cement weight. Whereas water amount in concrete mixture was reduced by 0%, 15%, and 17,5%. The result obtained was that using 1% superplasticizer and reducing 15% water amount in concrete mixture produced optimum compressive strength of 22,98 Mpa.
Meat Product Innovative Formula of the Functional Use
Authors: Gorlov Ivan , Slozhenkina Marina , Fedotova Gilyan , Natyrov Arkadiy , Slozhenkin Aleksei , Erendzhenova Mariya
Published: June 2020

Modern trends in functional and dietary nutrition define the need to search for and develop innovative recipes and technologies for manufacturing meat products. Existing technologies for the meat products production ensure compliance with the consumption standards ratios in accordance with the World Health Organization recommendations. The research object was the technology of manufacturing a meat product - rillette “Honey Nut” with the addition of amino acetic acid. The proposed innovative technology ensures the enrichment of traditional meat rillette with useful ingredients contained in honey extract of walnuts. The amount of nut-honey extract and amino acetic acid (glycine) introduced into the recipe is 0.2–0.3 and 0.03–0.04 kg per 100 kg of raw materials, respectively. The recipe for walnuts honey extract is as follows: walnuts in the stage of milky-waxy ripeness (5–7 mm) – 1 kg; mixed honey – 4 l. To prepare honey-nut extract, a man infused crushed walnuts in the stage of milky-waxy ripeness in liquid honey for 42 days. Visual evaluation of the honey nut rillette structure showed that it is a fairly viscous, homogeneous mass in the product. In the mass there are small particles (200–300 microns) of connective and muscle tissue; the boundaries between them are blurred and are not identified. A significant proportion of particles is less than the value of a single cell; they form fine-grained protein masses that give the rillette greater compactness and uniformity, which improves the organoleptic characteristics of the finished product. Generally, the amount of identifiable animal particles in the product is quite high. There are no nuclear cell formations. Comparison of rillettes main indicators proved that the “Honey nut” rillette has a higher carbohydrate content than its counterpart. The fat content indicators also exceed the TU analog due to the significant amount of polyunsaturated fatty acids (linoleic, linolenic, arachidonic).
La educación en salud como una importante estrategia de promoción y prevención
Authors: Martínez Sánchez Lina Maria , Hernández-Sarmiento José Mauricio , Jaramillo-Jaramillo Laura Isabel , Villegas-Alzate Juan Diego , Álvarez-Hernández Luis Felipe , Roldan-Tabares Mabel Dahiana , Ruiz-Mejía Camilo , Calle-Estrada María Camila , Ospina-Jiménez María Camila
Published: June 2020

La educación para la salud se define como la disciplina encargada de orientar y organizar procesos educativos con el propósito de influir positivamente en conocimientos, prácticas y costumbre de individuos y comunidades en relación con su salud. A través de la construcción de este manuscrito se buscó desarrollar una revisión actual y concreta sobre la educación en salud, con un enfoque en la promoción y prevención, abordando igualmente la importancia y el impacto de estas acciones en la población. Se realizó una búsqueda en las bases de datos PubMed, ScienceDirect, Scielo y Lilacs empleando las palabras clave en español e inglés y se seleccionaron los artículos para la construcción del manuscrito. La medicina preventiva es un concepto que ha sido muy olvidado, sin embargo, es muy importante comprender la gran relevancia que tiene la promoción y prevención en la salud del paciente y la carga de enfermedad; parte importante de esto, radica en la educación en salud que se brinda, que debería convertirse en un eje fundamental en la práctica médica.