bluuebunny/crossref_metadata_2025 huggingface dataset:
Evaluación de la mezcla de mercadeo digital en las plataformas de venta virtual de autoservicios en Colombia
Authors: Mejia Henao Paula Andrea , Marín Chaves Yeimi Viviana
Published: September 2020

Esta investigación aborda la evaluación y análisis de los componentes de la mezcla de mercadeo digital (producto, precio, plaza, promoción y plataforma -5 P-) plasmada en las plataformas de venta virtual de autoservicios en Colombia. En Colombia es evidente la falta de dinamismo para aprovechar todas las bondades que el comercio electrónico y el mercadeo digital pueden ofrecer a las empresas, que pueden aportar a su desarrollo y crecimiento. Esta investigación pretende identificar, clasificar, evaluar y analizar la mezcla de mercadeo digital de las plataformas de venta virtual de los autoservicios existentes en Colombia. La metodología de investigación desarrollada es de enfoque cuantitativo, el alcance es descriptivo, el diseño es de carácter no experimental transversal, la técnica utilizada es la de análisis de contenido y el instrumento para la recolección de información es el cuestionario. Esta investigación encontró que la gran mayoría de las plataformas de venta virtual utilizan variadas herramientas del mercadeo digital que crean una experiencia única y agradable para el cliente, en consonancia con lo expresado por la teoría de esta rama de la disciplina, en cuanto a su estructuración (5 P) y los modelos para la evaluación de sitios web. La gran mayoría de plataformas de venta virtual de autoservicios en Colombia analizadas presentan una estructuración muy pertinente en cuanto a la mezcla de marketing digital y, dan cuenta de la solución a las problemáticas existentes hace algunos años, haciendo que esta herramienta se constituya impulso comercial para estas empresas.

Códigos JEL: M Administración de Empresas y Economía de la Empresa; Marketing; Contabilidad; Economía del personal. M3 Marketing y Publicidad. M31 Marketing.
Wyzwania dla rolnictwa związane ze strategią Europejski Zielony Ład w okresie pandemii
Authors: Parlińska Maria , Jaśkiewicz Jacek , Rackiewicz Iwona
Published: September 2020

Celem artykułu jest przybliżenie wyzwań związanych z realizacją strategii Europejski zielony ład w zakresie rolnictwa. Wyzwania te wpisują się w realizację koncepcji zrównoważonego rozwoju i związanego z tym zatrzymania zmian klimatu oraz transformacji w kierunku gospodarki obiegu zamkniętego. Warto już obecnie, w dobie pandemii, przygotować strategię jak wykorzystać szanse rozwoju rolnictwa, aby po jej zakończeniu maksymalnie wykorzystać sytuację opierając się na zasadach określonych w EZŁ. W artykule przedstawiono szereg możliwości w tym zakresie.
Consequences of Executive Focus on Support Activities: Evidence from Executive Influence on Firm Tax Strategy
Authors: Olson Adam
Published: September 2020

Should executives solely focus on core activities of the firm? Or is it beneficial to focus on both core and support activities? If core and support activities are substitutes, focusing on both activities will take energy and attention away from core activities. If core and support activities are complements, focusing on both activities may lead to synergies and knowledge spillover. Further, it could be the case that individual executive characteristics impact these relations. Using executive influence on firm tax strategy as a proxy for executive focus on support activities, I find that executive focus on support activities is associated with poorer firm performance and negative executive labor market consequences. These results are partially moderated by executive ability and background. Overall, the results suggest top executives perform best when focused solely on core activities, consistent with core and support activities being substitutes.

Data Availability: All data are publicly available as noted in the text.
Dual-Hormone Closed-Loop System Using a Liquid Stable Glucagon Formulation Versus Insulin-Only Closed-Loop System Compared With a Predictive Low Glucose Suspend System: An Open-Label, Outpatient, Single-Center, Crossover, Randomized Controlled Trial
Authors: Wilson Leah M. , Jacobs Peter G. , Ramsey Katrina L. , Resalat Navid , Reddy Ravi , Branigan Deborah , Leitschuh Joseph , Gabo Virginia , Guillot Florian , Senf Brian , El Youssef Joseph , Steineck Isabelle Isa Kristin , Tyler Nichole S. , Castle Jessica R.
Published: September 2020

OBJECTIVE

To assess the efficacy and feasibility of a dual-hormone (DH) closed-loop system with insulin and a novel liquid stable glucagon formulation compared with an insulin-only closed-loop system and a predictive low glucose suspend (PLGS) system.

RESEARCH DESIGN AND METHODS

In a 76-h, randomized, crossover, outpatient study, 23 participants with type 1 diabetes used three modes of the Oregon Artificial Pancreas system: 1) dual-hormone (DH) closed-loop control, 2) insulin-only single-hormone (SH) closed-loop control, and 3) PLGS system. The primary end point was percentage time in hypoglycemia (<70 mg/dL) from the start of in-clinic aerobic exercise (45 min at 60% VO2max) to 4 h after.

RESULTS

DH reduced hypoglycemia compared with SH during and after exercise (DH 0.0% [interquartile range 0.0–4.2], SH 8.3% [0.0–12.5], P = 0.025). There was an increased time in hyperglycemia (>180 mg/dL) during and after exercise for DH versus SH (20.8% DH vs. 6.3% SH, P = 0.038). Mean glucose during the entire study duration was DH, 159.2; SH, 151.6; and PLGS, 163.6 mg/dL. Across the entire study duration, DH resulted in 7.5% more time in target range (70–180 mg/dL) compared with the PLGS system (71.0% vs. 63.4%, P = 0.044). For the entire study duration, DH had 28.2% time in hyperglycemia vs. 25.1% for SH (P = 0.044) and 34.7% for PLGS (P = 0.140). Four participants experienced nausea related to glucagon, leading three to withdraw from the study.

CONCLUSIONS

The glucagon formulation demonstrated feasibility in a closed-loop system. The DH system reduced hypoglycemia during and after exercise, with some increase in hyperglycemia.
CALCULATION OF EXCHANGE INTEGRALS OF VOLUME MAGNETIC CRYSTAL STRUCTURES Fe, Co, Ni AND CrNb3S6
Authors: Mamonova Marina , Prudnikov Vladimir , Prudnikov Pavel , Kalinin Dmitriy , Evsin Dmitriy
Published: September 2020

The results of calculations of magnetic moments and exchange integrals of bulk magneto-crystalline structures Fe, Co, Ni, and CrNb3S6 using the SPR-KKR package are presented. The influence of various crystal structures and approximations of the exchange-correlation potential is investigated.
SELECTION OF ION-EXCHANGE RESIN FOR EXTRACTION
OF REE FROM COMPLEX SOLUTIONS DURING PROCESSING OF OIL CRACKING CATALYST
Authors: Pogodaeva Mariya , Bogdanova Alexandra , Adeeva Lyudmila
Published: September 2020

It was found that the ion exchange resins Purolite C100 H and Purolite S-957 can be used to extract lanthanum (III) ions from solutions. The values of the resin capacities for lan-thanum (III), iron (III) and aluminum and the ion distribution coefficients for both resins were determined. It is shown that according to the values of the separation coefficients, Purolite C100 H resin can be used for ion exchange separation of lanthanum ions from complex solutions
ABOUT THE WEIGHT CLASSES OF ENTIRE FUNCTIONS OF VALIRON'S TYPE
Authors: Okhlupina O. V.
Published: September 2020

A representation of classes of entire functions of the Valiron type with weight from Lp-spaces is constructed. The proof of all statements is constructed using the methods of complex and functional analysis.
CATEGORIAL SCHEMES IN INTERDISCIPLINARY RESEARCH
Authors: Razumov Vladimir
Published: September 2020

The unacceptably slow development of the theory and the practice of interdisciplinary re-search is closely related to the insufficient attention of intellectual culture in general to categorical schemes (CS). The properties distinguishing CS from conceptual constructions are picked out. The theoretical and practicable CS, which are created on the basis of the categorical-system methodology (CSM), the theory of dynamic informational systems (TDIS) are discussed. CS based on TDIS have found application in the development of an organizational and business game - insafing, in writing computer programs for solving problems of the automation of reasoning processes. Comparison of CSs formed on the ba-sis of CSM, TDIS with famous cognitive constructions, raises the question of the possibility of the development of original CSs for new intelligent technologies.
MODERNISM AND THE PROBLEM OF CROSS-CULTURAL COMMUNICATION
Authors: Stanislavova Irina , Solovyova Galina
Published: September 2020

The article is devoted to the study of issues related to the problem of “intercultural com-munication”.The complexity and relevance of this problem for the modern stage of cultur-al development is shown. Modernism is seen as an element of erosion of the functional integrity and balance of the dominant cultural system. Based on this research, a number of conclusions are made.
Prediction of Stresses Around Tunnel in Rock during Advancing TBM
Authors: Dhuha H. Ali
Published: September 2020

Drilling machines (TBM) used for civil engineering work in large towns to significantly reduce the harmful effects of expenditure on the earth's surface. The tunneling process complicated due to the dependence of this relationship on construction technology that lead to undesirable consequences such as damage to adjacent structures, so the use of the finite element method has become common to simulate construction stages model using the Hoek-Brown ,the methodology includes using the finite element method by constructing the model to predict the behavior of stresses during the tunnel construction stages and to collect the required data so that it is appropriate to the requirements of the region and to analyze the parameters of the numerical model entry and comparing the natural condition of the rocks during the various tunnel construction stages. During tunneling development, vertical stresses at the top and bottom of the tunnel are reduced while horizontal stresses are increased. Three vertical sections are selected to test the TBM tunnel 's impact on nearby rocks. The first section (x = 0) passes through the center of the tunnel. The second section is near the side edge of the tunnel whereas the third section is more or less selected than the edge of the tunnel. Progression of TBM is reflected through one to five phases. By conducting an axial symmetric FE analysis, the results of math measurement showed major changes in stress that occur in rock regions near the tunnel boundary mostly affects closeness to rocks. This increasing pressure decreases as you step horizontally away from the tunnel and the seams achieve exceedingly small values for lengths greater than 12 m from the edge of the tunnel.
Replacing Traditional Stirrups by Shear Steel Plate in High Performance Concrete Beams under Monotonic and Repeated Loads
Authors: Hadeer A. Khudhair
Published: September 2020

High performance concrete beam subjected to repeated loads is different from than the one subjected to static loads. Due to loading and unloading process crushing was caused by repeated loads in some part of concrete. Behavior of concrete under static loads was influenced by adding steel fibers, which amended many properties especially concrete tensile strength. These improvements are studied in this research under them effect of repeated loads, by testing simply supported high performance concrete fibrous reinforced beams with dimensions (1400x150 x 300) mm and percentages of steel fibers (0.5%) its design according to ACI544.4R-8[1]. The references is reinforced with normal stirrups while the other reinforced with different longitudinal shear steel plate. Repeated and static loads were applied to the beams through two points and for many cycles up to failure. All the results show low in ultimate strength under repeated load and increase in number and width of cracks. The results present that ductility under repeated load was less than under static load and the deflection under repeated load was higher than deflection under static load.
Influence Of Human Resources, Information Technology, Internal Control System And Regional Financial Supervision On Value Of Financial Reporting Information
Authors: Imran Muhammad
Published: September 2020

Penulisan ini bertujuan untuk: (1)  menguji dan menganalisis signifikansi pengaruh sumber daya manusia terhadap nilai informasi pelaporan keuangan; (2) Untuk menguji dan menganalisis signifikansi pengaruh teknologi informasi terhadap nilai informasi pelaporan keuangan; (3) Untuk menguji dan menganalisis signifikansi pengaruh sistem pengendalian intern terhadap nilai informasi pelaporan keuangan; (4) Untuk menguji dan menganalisis signifikansi pengaruh pengawasan keuangan daerah terhadap nilai informasi pelaporan keuangan; (5) Untuk menguji dan menganalisis variabel yang lebih dominan berpengaruh terhadap nilai informasi pelaporan keuangan.Jenis penelitian ini adalah penelitian kuantitatif. Populasi penelitian ini adalah Satuan Kerja Perangkat Daerah di Pemeritah Kota Makassar yang terdiri dari 53 SKPD. Teknik pengambilan sampel menggunakan teknik sampling terhadap kepala bagian keuangan dan bendahara. Metode pengumpulan data dilakukan dengan kuesioner dan diolah dengan menggunakan aplikasi SPSS. Hasil penelitian menunjukkan bahwa (1) sumber daya manusia berpengaruh positif dan signifikan terhadap nilai informasi pelaporan keuangan; (2) teknologi informasi berpengaruh positif dan signifikan terhadap nilai informasi pelaporan keuangan; (3) sistem pengendalian intern berpengaruh positif dan signifikan terhadap nilai informasi pelaporan keuangan; (4) pengawasan keuangan daerah berpengaruh positif dan signifikan terhadap nilai informasi pelaporan keuangan; (5) teknologi informasi merupakan variabel yang lebih dominan berpengaruh terhadap nilai informasi pelaporan keuangan.
On the current situation with the russian language in the cis and foreign countries
Authors: Afanasieva N. D.
Published: September 2020

In recent years, the situation with the Russian language presence in the CIS and foreign countries has changed. Statesmen of range of former Soviet republics in their plans to involve schoolchildren and students in further development of relations with Russia and encourage the use, the Russian language in their work, consider the possibility of the labor market expansion, closer cooperation in the sphere of education in Russian largest universities, and of science partnership with Russian scientific institutions. Europe, Asia and Africa face an increase in interest in the studying of the Russian language. Homever, its position declines in some countries, for example in Germany. Russian was a compulsory course in public schools of former socialist countries till 1990, but after the collapse of the socialist system, their governments abandoned this practice. But in recent years Russian language is gaining popularity among students, for example, in Poland and the Czech Republic. The Chinese, South Koreans and the Indian people also show interest in studying Russian language, literature and culture. En Africa Russian is spoken by the graduates of Russian universities and people who worked with Russian partners. Due to positive changes in the Russian economy, its business relations with foreign partners, and the need to communicate in Russian when working together, there is some increase in the number of foreigners who choose to study the Russian language. En addition, this is often associated with the desire to learn Russian language in order to embrace national Russian values.
Eighteenth inter-university seminar Linguistic and Cultural Studies: Analysis Methods, Learning Technology
Authors: Glazunova S. E.
Published: September 2020

On June 19-20th, 2020, MGIMO hosted a traditional, already eighteenth inter-university seminar “Linguistic and Cultural Studies: Analysis Methods, Learning Technology”. More than sixty participants took part in the event: guests from the Russian regions (Bashkiria, Novosibirsk, Krasnodar, Smolensk, Ufa, Kaliningrad, Ryazan, Tver, Kurgan), as well as from Moldova joined MGIMO professors. The seminar turned eighteenth anniversary in a new online format. Among the topics covered at the conference are the problems of linguodidactics and translation studies, as well as the questions related to intercultural communication and the scientific research on it.
From appeal to transgression: problems of modern discourse of religious Transitions
Authors: Khlyshcheva E. V. , Dryagalov V. S.
Published: September 2020

Globalization processes, which are aimed at forming a single language of different cultures, raise problems of modern identity and its transformation. The process of self-identification is complex and depends on the existing worldview, so the transformation of identity entails a change in the worldview, and vice versa. In other words, such transformation can be seen as transgressive processes, which is clearly demonstrated in the example of religious practice.

The religious worldview is rather stable, but significant changes are observed today. Influenced by syncretism fashion, new religious practices start blurring the boundaries of the world confessions that have been formed over the centuries, replacing the sacrament of conversion with an act of uncontrolled religious transgression, which is especially characteristic of believers who do not feel a special craving for integral system of dogmas.

The authors used the term transgression to fix the phenomenon of crossing the impassable border between the possible and the impossible, leading in some cases to a breakthrough beyond the boundaries of everyday commonness and generally accepted norms. This process is both constructive and destructive, but it is destructive to social norms. Therefore, special attention is paid to the act of religious transgression related to the transition to another faith, which makes it necessary to study in the framework of the article bans and recommendations designed to create a limit of impassability on the borders of world confessions. Based on the comparative analysis of various rules and regulations adopted in Judaism, Islam and Christianity in order to regulate believers’ behavior, the social effect on the formation of the individual religious worldview is analyzed.
Математическая модель оптимизации проектных характеристик скоростных пассажирских катамаранов
Authors:   Ha Van Duy, Kitaev M.
Published: September 2020

Увеличение объемов морских пассажирских перевозок в Социалистической Республике
Вьетнам обусловливает необходимость разработки новых методов и моделей для проектирования
конкурентоспособных судов. Этот поиск рациональных проектных решений отвечает современным
требованиям экономической и функциональной эффективности, учитывает специфику и региональные особенности страны. Скоростные пассажирские катамараны хорошо зарекомендовали себя в
сегменте пассажирских перевозок, так как конструктивные особенности выделяют их на фоне судов
других типов. В статье рассмотрена математическая модель оптимизации проектных характеристик
скоростных пассажирских катамаранов. Приведены основные аналитические зависимости, составляющие основу математической модели. На примере линии г. Ратьзя–о. Фукуок показаны результаты оптимизации основных проектных характеристик скоростных пассажирских катамаранов, в качестве которых рассматривались скорость хода и пассажировместимость.
Ключевые слова: Социалистическая Республика Вьетнам, скоростные пассажирские катамараны, математическая модель проектирования катамаранов, оптимизация проектных характеристик.

Continuous growth of marine passenger traffic in Socialist Republic of Vietnam is the key factor for the necessity to develop new methods and models to ensure rational design solutions in line with up-to-date requirements to economic and operational efficiency. As a rule, these models should take regional specifics of Vietnam into account. The high-speed catamarans fully satisfy these requirements as passenger vessels. In this paper the mathematical model for optimization of design characteristics of high-speed passenger catamarans is considered. The block-diagram and analytical dependencies which are the core of the mathematical model are given herein. As an example, results of optimization of design characteristics (speed and passenger capacity) of high-speed passenger catamarans for Rach Giato Phu – Quoc are shown.
Keywords: Socialist Republic of Vietnam, high-speed passenger catamarans, mathematical model of catamaran vessel, optimization of design characteristics.
Анализ методов расчёта крутильных колебаний судовых валопроводов
Authors:   Lapin Yu., German A., Burlakova N.
Published: September 2020

Рассмотрены невыясненные вопросы крутильных колебаний судовых валопроводов с целью повышения точности расчета собственных частот крутильных колебаний путем определения
наиболее точного метода приведения системы к дискретному виду. Исследуются две крутильноколеблющиеся системы: экспериментальная установка простой конструкции (двухопорный вал с массами, имеющий привод от электродвигателя) и более сложная – главный пропульсивный комплекс портового буксира РБТ проекта 378. Для этого решается ряд задач: расчет установок двумя методами (с помощью классических уравнений определения инерционных и упругих характеристик
системы и программ, использующих методы конечных элементов); торсиографирование названных
систем для определения значений экспериментальных значений частот собственных колебаний;
сравнительный анализ полученных расчетным и экспериментальным путем значений частот собственных колебаний: на его основе определяются наиболее точные методы расчета.
Установлено, что оба рассматриваемых расчетных метода дают результаты приблизительно одной
точности. Отмечено, что исследованные модели относительно просты с точки зрения их анализа и
определения характеристик. Картина может измениться в случае более сложных систем: тогда один
из рассмотренных методов может показать явное преимущество.
Ключевые слова: крутильные колебания, метод конечных элементов, судовая энергетическая установка.

The outstanding issues of torsion vibrations of vessels' shaft lines in order to improve the accuracy of calculating the natural frequencies of torsion vibrations by determining the most accurate method of reducing the system to the discrete form. Two torsion-oscillating systems are studied: an experimental installation of a simple design (a two – support shaft with weights, driven by an electric motor) and a more complex
one – the main propulsive unit of RBT project 378 port tug. With this purpose a number of problems have to be solved: calculation of installations with two methods (using classical equations for determining the inertial and elastic characteristics of the system and programs using finite element methods); torsiography of these systems to determine the values of experimental values of natural oscillation frequencies; comparative analysis of calculated and experimental values of natural oscillation frequencies and determination of the most accurate calculation methods on its basis.
It has been found that both calculation methods being considered lead to results of approximately similar accuracy. It is noted that the studied models are relatively simple in terms of their analysis and characterization. The picture may change in the case of more complex systems: then one of the methods considered may
show a clear advantage.
Keywords: torsion vibrations, finite element method, ship power plant.
Bitcoin Management in the Digital World Era of Vietnam
Authors: Uyen Tran Tu
Published: September 2020

Launched in 2009, Bitcoin is increasingly accepted and used more widely. With many advantages, Bitcoin has brought opportunities and challenges to the financial and noney market. Bitcoin has been accepted by many countries as a valid payment method such as Japan, South Korea, Singapore, Australia and so on. In Vietnam, Bitcoin has been introduced and has formed a community of users as well as developed the support platforms. However, Vietnam has not had the specific research and legal framework for this kind of currency to control it effectively. The paper analyzes the benefits as well as the risk of using Bitcoin. Furthermore, the paper emphasizes on effecting of Bitcoin on the financial and monetary market, socio economic and proposes some solutions to increase efficiency in Bitcoin management in Vietnam.
Microagulhamento associado ao drug delivery no tratamento do melasma feminino
Authors: Coelho Joseni da Visitação , Geitenes Ana Paula Mendes
Published: September 2020

O melasma é hiperpigmentação crônica adquirida, acometem áreas fotoexpostas da pele como face e eventualmente colo e braços. Sendo sua etiologia multifatorial, a patogenia ainda permanece desconhecida, sabendo-se que a radiação ultravioleta é o fator preponderante. O microagulhamento ou Indução Percutânea de Colágeno por Agulhas (IPCA) foi recentemente incluído como abordagem desta patologia. Assim, buscou-se reunir e discutir dados científicos que comprovem a eficácia do microagulhamento associado ao Drug delivery no tratamento do melasma feminino. Foi realizada uma revisão da literatura, nas principais bases de dados virtuais, Pubmed, Lilacs, Medline, Scielo e Bireme, de artigos publicados entre 2009 e 2019, que abordassem o tema. Demonstrou-se a eficácia da combinação das técnicas descritas no clareamento da pele, na hidratação e auxiliando no rejuvenescimento, porém devido a pequena quantidade de estudos, se faz necessário mais publicações para melhor elucidação dos dados.
Análise da mortalidade hospitalar por insuficiência cardíaca no estado de Minas Gerais, Brasil
Authors: Vasconcelos Henrique Guimarães , Vaz Sílvio Henrique da Silva , Prado Luciana Ferreira Rodrigues , Rezende Larissa Caroline , Machado Anna Paula Braz , Pereira Davi Fernando Gomes , Maciel João José Rios , Pereira Jovelina de Oliveira , Abreu Pedro Henrique de Freitas , Andrade Vanessa Fernandes
Published: September 2020

Este trabalho buscou descrever a taxa de mortalidade hospitalar por insuficiência cardíaca (IC) no estado de Minas Gerais, de 2010 a 2019. Trata-se de estudo descritivo de cunho epidemiológico com base em informações coletadas no DATASUS. A mortalidade hospitalar por IC foi avaliada quanto à faixa etária, sexo e raça. O número de internações e de óbitos diminuiu, porém em proporções diferentes, de modo que a taxa de mortalidade anual foi maior ao fim do período. Os índices por faixa etária diminuíram em indivíduos de até 39 anos, com exceção do grupo entre 5-9 anos, no qual houve aumento significativo (22,07%). A partir de 40 anos, os índices apresentaram elevação, mais importante acima dos 70 anos. Os números são discretamente maiores na população feminina quando comparada à masculina (0,19%). As populações branca, amarela e indígena possuem maiores índices quando comparadas à parda e à preta. Observou-se, portanto, uma tendência de aumento da mortalidade hospitalar por IC em Minas Gerais a partir da quarta década de vida, além de disparidade entre as raças, sendo necessários estudos mais aprofundados para julgar fatores possivelmente associados. Conclui-se que a IC ainda é uma patologia complexa, de alta letalidade, sendo fundamental seu diagnóstico e manejo precoces.
Rapidly Reversible Organic Crystalline Switch for Conversion of Heat into Mechanical Energy
Authors: Dharmarwardana Madushani , Pakhira Srimanta , Welch Raymond P. , Caicedo Narvaez Carlos , Luzuriaga Michael A. , Arimilli Bhargav S. , McCandless Gregory T. , Fahimi Babak , Mendoza-Cortes Jose , Gassensmith Jeremiah J.
Published: September 2020

Solid state thermosalience—a sudden exertion of an expansive or contractive physical force following a temperature change in a solid state compound—is rare, few are reversible systems, and most of these are limited to a dozen or so cycles before the crystal degrades or they reverse slowly over the course of many minutes or even hours. In this work, we show a fully reversible actuator that is stable at room temperature for multiple years and is capable of actuation for more than two hundred cycles at near ambient temperature. Specifically, the crystals shrink to 90% of its original length instantaneously upon heating beyond 45 °C and expands back to its original length upon cooling below 35 °C. This temperature regime is important because it occurs around physiologically important temperatures. Furthermore, the phase transition occurs instantaneously, with little obvious hysteresis, allowing us to create real-time actuating thermal fuses that cycle between on and off rapidly.
Using Purely Sinusoidal Voltammetry for Rapid Parameterization of Surface-Confined Electrochemistry
Authors: Lloyd-Laney Henry , Robinson Martin , Hewson Alice R. , Firth Jack , Zhang Jie , Bond Alan , Parkin Alison , Gavaghan David , Yates Nick , Elton Darell
Published: September 2020

The paper includes a thorough charac-terisation of a technique called Purely Sinusoidal Voltammetry (PSV). This technique is usedto infer reaction parameters about a surface-linked redox process, and the characterisationeffort involves both computational and experimental methods.
MicroED Elucidation of Diverse Solid-State Packing in a Family of Electron-Deficient Expanded Helicenes
Authors: Samkian Adrian , Kiel Gavin R. , G. Jones Christopher , Bergman Harrison , Oktawiec Julia , Nelson Hosea , Tilley T. Don
Published: September 2020

Solid-state packing plays a defining role in the properties of a molecular organic material, but it is difficult to elucidate in the absence of single crystals that are suitable for X-ray diffraction. Here, we demonstrate the coupling of divergent synthesis with microcrystal electron diffraction (MicroED) for rapid assessment of solid-state packing motifs, using a class of chiral nanocarbons – expanded helicenes – as a proof of concept. Two highly selective oxidative dearomatizations of a readily-accessible helicene provided a divergent route to four electron-deficient analogues containing quinone or quinoxaline units. Crystallization efforts consistently yielded microcrystals that were unsuitable for single crystal X-ray diffraction, but ideal for MicroED. This technique facilitated the elucidation of solid-state structures of all five compounds with <1.1 Å resolution. The otherwise-inaccessible data revealed a range of notable packing behavior, including four different space groups, homochirality in a crystal for a helicene with an extremely low enantiomerization barrier, and nanometer scale cavities. The results of this study suggest that MicroED will soon become an indispensable tool for high-throughput investigations in pursuit of next-generation organic materials.
In Crystallo Snapshots of Rh2-Catalyzed C–H Amination
Authors: Das Anuvab , Wang Chen-Hao , Van Trieste Gerard , Sun Cheng-Jun , Chen Yu-Sheng , Reibenspies Joseph , Powers David
Published: September 2020

Correlation of catalyst structure with activity is foundational to the rational design of transition metal catalysts. While X-ray crystallography routinely provides structural characterization of kinetically stable pre-catalysts and intermediates, experimental elucidation of the structures of reactive intermediates, which are the species intimately engaged in bond-breaking and -making in catalysis, is generally not possible due to the transient nature of these species. Here, we demonstrate in crystallo synthesis of Rh2 nitrenes that participate in catalytic C–H amination, and characterization of these transient intermediates as triplet adducts of Rh2. Further, we observe the impact of coordinating substrate, which is present in excess during catalysis, on the structure of transient Rh2 nitrenes involved in C–H amination. By providing structural characterization of authentic C–H functionalization intermediates, and not kinetically stabilized model complexes, these experiments provide the opportunity to define critical structure-activity relationships.
Explore the Chemical Space of Linear Alkanes Pyrolysis via Deep Potential Generator
Authors: Zeng Jinzhe , Zhang Linfeng , Wang Han , Zhu Tong
Published: September 2020

Reactive molecular dynamics (MD) simulation is a powerful tool to study the reaction mechanism of complex chemical systems. Central to the method is the potential energy surface (PES) that can describe the breaking and formation of chemical bonds. The development of PES of both accurate and efficent has attracted significant effort in the past two decades. Recently developed Deep Potential (DP) model has the promise to bring ab initio accuracy to large-scale reactive MD simulations. However, for complex chemical reaction processes like pyrolysis, it remains challenging to generate reliable DP models with an optimal training dataset. In this work, a dataset construction scheme for such a purpose was established. The employment of a concurrent learning algorithm allows us to maximize the exploration of the chemical space while minimize the redundancy of the dataset. This greatly reduces the cost of computational resources required by ab initio calculations. Based on this method, we constructed a dataset for the pyrolysis of n-dodecane, which contains 35,496 structures. The reactive MD simulation with the DP model trained based on this dataset revealed the pyrolysis mechanism of n-dodecane in detail, and the simulation results are in good agreement with the experimental measurements. In addition, this dataset shows excellent transferability to different long-chain alkanes. These results demonstrate the advantages of the proposed method for constructing training datasets for similar systems.
The Effect of N-Heterocyclic Carbene Units on the Absorption Spectra of Fe(II) Complexes: A Challenge for Theory
Authors: Bokareva Olga S. , Baig Omar , Al-Marri Mohamed , Kühn Oliver , Gonzalez Leticia
Published: September 2020

The absorption spectra of five Fe(II) homoleptic and heteroleptic complexes containing strong sigma-donating N-heterocyclic carbene (NHC) and polypyridyl ligands have been theoretically characterized using a tuned range-separation functional.From a benchmark comparison of the obtained results against other functionals and a multiconfigurational reference, it is concluded that none of the methods is completely satisfactory to describe the absorption spectra.Using a compromised choice of 20\% exact exchange, the electronic excited states underlying the absorption spectra are analyzed.The low-lying energy band of all the compounds shows predominant metal-to-ligand charge transfer (MLCT) character while the triplet excited states have metal-centered (MC) nature, which becomes more pronounced with increasing the number of NHC-donor groups. Excited MC states with partial charge transfer to the NHC-donor groups are higher in energy than comparable states without these contributions. The presence of the low-lying MC states prevents the formation of long-lived MLCT states.
Design and Synthesis of Novel Peptidomimetics for Cancer Immunotherapy
Authors: Köse Ceyda , Uysal Esra , Yazıcı Büşra , Tuğay Zeynep , Dingiş Birgül Serap İpek , Yanık Hamdullah , Tavukcuoglu Ece , Gulyuz Sevgi , Akdemir Atilla , Esendağlı Güneş , Yılmaz Özgür , Alptürk Onur
Published: September 2020

Tumor cells benefit from some certain signals, which are referred to as “immune checkpoints”, to escape immune-mediated destruction. With that in mind, it is believed that the blockade of these points, such as programmed cell death Ligand-1 (PD-L1) and programmed cell death 1 (PD-1), can restore an adaptative immune response against tumoral cells. In this study, we have designed and synthesized some novel peptidomimetics with a 2-aminobenzathiazole scaffold, which targets the PD-1/PDL-1 pathway. In the viability assay, it was found that these compounds decreased the proliferation of peripheral blood mononuclear cells in the concentration of 10 uM. Overall, our results indicate that these novel compounds are potential checkpoint inhibitors for cancer immunotherapy.
A NORMATIVIDADE DO DIREITO REAL DE LAJE NO BRASIL ENTRE OS PARADIGMAS DE DIREITO CIVIL CONSTITUCIONAL E DE SOCIEDADE DE DIREITO PRIVADO
Authors: Oliveira Francisco Cardozo , Ribeiro Guilherme Carta
Published: September 2020

O artigo trata da normatividade do direito real de laje no direito brasileiro, em face dos paradigmas de direito civil constitucional e de sociedade de direito privado. A premissa de que o direito real de laje está comprometido com a inclusão social, mediante a titularização proprietária de modos informais de autoconstrução, em áreas ocupadas pela população carente, é confrontada com os processos de financeirização implicados no mercado imobiliário. O objetivo é analisar o quanto a introdução do direito real de laje no Código Civil  pode constituir evidência de uma transição de fundamentos no direito civil.
Türkiye’de Tortula vlassovii (Laz.) Ros & Herrnst’nin Yeniden Keşfi Üzerine Notlar
Authors: KARA Recep , SERİN Seda , TAŞPINAR Hatice
Published: September 2020

Tortula vlassovii Dünya biyoçeşitliği açısından korunması gereken önemli karayosunu türlerinden biridir. Bu tür Türkiye Florası’nda şimdiye kadar yalnızca bir lokaliteden bilinmektedir. Bu karayosunu Türkiye briyoflorasında yaklaşık yarım asırdır kayıptı. Bu çalışmada bu tür Türkiye’den ikinci kez toplanmış, mikro dijital fotoğrafları çekilmiş ve tanıtımı yapılmıştır. Bu makalenin amacı, dünyada nesli tehlike altında olan ve taksonomik durumu hala tartışılan Tortula vlassovii’nin Türkiye’deki durumunu ortaya çıkarmaktır.
Debate, Research and Critique in Contemporary Youth Studies
Authors: Cuervo Hernan , Wood Bronwyn , White Rob
Published: September 2020

No description supplied
Concerning the place and meaning of psychomotor function in the formation of writing skills in children with general underdevelopment of speech
Authors: Tkachenko D. A. , Rodin Yu. I.
Published: September 2020

Introduction. The article theoretically and experimentally substantiates the importance of timely psychomotor development of children at the initial stage of learning to write. The influence of impaired functioning of subcortical and cortical neurological levels of building movements on the implementation of the phonetic principle of writing in primary school students with general speech underdevelopment in the form of the presence of hyper- and hypotonus, micro- and macrography, motor, visual-motor mistakes is analyzed.

Materials and Methods. When writing the article, a theoretical analysis of domestic defectological research was used as well as psychological and pedagogical experiment.

Results. It has been established that psychomotorism acts as a structural component of writing, the formation of which is caused by the combination of visual and auditory-speech motor representations with a kinesthetic image of letters, as well as violations of psychomotor development negatively affect the formation of the writing skills of seven year old with general speech underdevelopment of level III at the initial stage of training. Psychomotor disturbances are associated with insufficient implementation of the phonetic principle of writing, and is also characterized by a number of features that determine their writing skills at the beginning of school.

Discussion and Conclusions. The results of the research are the basis for the development of correctional and developmental programs of the psychological and pedagogical impact on objectification in the child’s mind of the complex of sensory and proprioceptive sensations in the writing learning process as well as the elimination of the difficulties of phonetic-phonemic perception, morphological analysis of the word, lexical and grammatical and spelling mistakes.
Ego States in the therapeutic relationship and pre- to post-treatment change in Self Ego states
Authors: Ceridono Davide , Viale Daniela
Published: September 2020

This study investigates process and outcome of psychotherapy conducted according to Social-Cognitive Transactional Analysis (SCTA); the perception of Self Ego states, pre- and post- treatment, and of Relational Ego states activated in the therapeutic relationship is studied. Subjects (N=288) were adult clinical outpatients who received 21 sessions of psychotherapy in Prevention and Intervention Clinics connected to four training schools in psychotherapy.  Therapists were 3rd and 4th year trainees.  Perception of Ego states was studied with self-report questionnaires based on SASB (Benjamin, 1974, 2000; Scilligo & Benjamin, 1993, Scilligo 2005) by which prototypical Ego states are operationally defined according the SCTA (Scilligo, 2009; De Luca e Tosi, 2011).  The results of the preliminary studies show that clients perceive that Free and Protective Ego states in the relationships with therapist are highly activated, and Critical and Rebellious Ego states are very low.  Pre- to post-treatment changes of Self Ego states in clients are observed: a growth of Free and Protective Ego states and a reduction of Critical and Rebellious Ego states.  This outcome appears to be related to the therapeutic relationship that stimulates Free and Protective Ego states through complementarity during the sessions, and that promotes the development of Free and Protective Ego states by internalization.
ASSESSMENT OF WATER AND ENVIRONMENTAL SANITATION SERVICES OF PRIMARY EDUCATION (KHALWA) AT EAST NILE LOCALITY, SUDAN, 2017
Authors: Mohamed Hadeel , Ali Fatima Fadul , Elamin Mohamed Osman , Faraj Elmubasher Abd
Published: September 2020

The descriptive study was conducted in East Nile locality in the period of September to December 2017 to assess the water and environmental sanitation services of primary education instituations (Khalwa). Unsafe water, inadequate sanitation, and insufficient hygiene practices account for an estimated 9.1 percent of the global burden of disease and 6.3 percent of all deaths.

The study aimed to assess the healthy environment, the availability of water supply and water services in khalwas, the ways of collection and disposal of solid waste and health awareness among students towards personal hygiene.

The students (384students) selected randomly from (5135students) and the data was collected by questionnaire and checklist from 4khalwas.

The study results revealed that (96.4%) of students their education level is just khalwa, (32.8%) of students don’t know the important of personal hygiene, (50%) of khalwas the source of water is wells, (50%) of khalwas don’t have containers for solid waste and it’s burning solid waste and (75%) of khalwas have just two meals per day.

The study was recommended that to increase the awareness of students towards personal hygiene, provision of containers and cars for solid waste in each khalwas, providing network for drinking water and for wastewater and increase the number of rooms according to the number of students.
IMPACT OF AGRICULTURAL LOAN ON DRY SEASON FARMING IN MUBI METROPOLIS ADAMAWA STATE
Authors: Yahaya Adamu
Published: September 2020

Until recently, farming was predominantly a seasonal business in Nigeria where most cropping are observed during the raining season. Increase in demand for food couple with the recent government policy of diversification motivate people into dry season farming. Therefore, this paper investigates the impact of agricultural loan on dry season farming in Mubi metropolis. The methodology adopted was purely descriptive and data used were primarily sourced via questionnaire and interviews. Two sets of the dry season farmers were identified as: grain and vegetable farmers in the study area. A total of fifty (150) farmers were randomly selected within the metropolitan space of Mubi north and south local government areas. The Data collected was analyzed using descriptive statistics through frequency tables and percentages. It is evident from the analysis that 83% of the respondents were male and most of them were in their active ages: 18 to 59 years (93%). The study further revealed that 97% of the farmers’ farm sizes were below 0.76ha and 57% of which are inherited by the farmers while only 10% of the farmers enjoy government loan as 90% finance their farming by personal savings and other sources. Moreover, 40% of the farmers get assistance from politicians in form of farming tools.   It is therefore concluded that most dry season farmers in Mubi metropolis do not enjoy agricultural loan from government even though the few that benefited from it testified for remarkable yield increase. The study recommends that government should come to the aid of dry season farmers by providing drainage generators, canals (tube), fertilizers, chemicals, loan and other assistance for more yield from the dry season farming in Mubi metropolis.
PHYSICO-CHEMICAL MONITORING OF LAKE WATER DURING IDOL IMMERSION
Authors: Dwivedi Bharti , Banerjee Suchitra
Published: September 2020

The present study concerns on physicochemical monitoring of the water quality nature and the extent of pollution in lake due to idol immersion. Pre-immersion and post immersion samples were collected from lake and analyzed for various water quality parameters such as pH, turbidity, total dissolve solid (TDS), total solid (TS) total suspended solid (TSS), conductivity phosphate, dissolved oxygen (DO), BOD, COD and oil & grease.

The results were compared with standards prescribed by WHO and ISI. From the study, it has been found that the values of these parameters significantly increased during the immersion period and the declined in post immersion period. However the general trend observed was: immersion> Post immersion> pre immersion.The article focused on the main pollution which is caused by plaster of Paris idols and chemical paints by idol immersion during Ganesh festival.
SOCIO-ECONOMIC IMPACT OF THE INTERNATIONAL CATTLE MARKET IN MUBI SOUTH LOCAL GOVERNMENT, ADAMAWA STATE NIGERIA
Authors: Yahaya Adamu
Published: September 2020

The study examined the social and economic contribution of Mubi Cattle Market to the economy of Mubi South Local Government Area. The study data were primarily sourced from the market through structured questionnaire and interviews. The Result obtained revealed on average, 5000 – 7000 cattle are sold in the market on weekly basis where N250 is paid per cattle as revenue to the state and local government (N150 and N100 respectively). It further revealed that about 40% of the revenue collections within the local government emanates from the market, making the market the biggest source of revenue for the local government. Youths are gainfully employed by running various businesses apart from the livestock business in the market. Most of the respondents fall within the age bracket of 20 – 45 years. The result also shows that although the market contributes about 40% of revenue generated within the local government, more revenue could still be generated if sellers of other products such as shoes, clothes, food, and robes etc. were to be taxed. Major challenges of the market included insecurity, language barrier and the non-willingness of some of the marketers to pay tax. It is therefore recommended among other thinks that government should provide a strong communication system, rehabilitate bad roads, and enhance security measures and consciousness for the sustenance of this informal sector employment and revenue generating business.