bluuebunny/crossref_metadata_2025 huggingface dataset:
Development of a Low-Cost System for the Accurate Measurement of Structural Vibrations
Authors: Komarizadehasl Seyedmilad , Mobaraki Behnam , Ma Haiying , Lozano-Galant Jose-Antonio , Turmo Jose
Published: September 2021

Nowadays, engineers are widely using accelerometers to record the vibration of structures for structural verification purposes. The main obstacle for using these data acquisition systems is their high cost, which limits its use to unique structures with a relatively high structural health monitoring budget. In this paper, a Cost Hyper-Efficient Arduino Product (CHEAP) has been developed to accurately measure structural accelerations. CHEAP is a system that is composed of five low-cost accelerometers that are connected to an Arduino microcontroller as their data acquisition system. Test results show that CHEAP not only has a significantly lower price (14 times cheaper in the worst-case scenario) compared with other systems used for comparison but also shows better accuracy on low frequencies for low acceleration amplitudes. Moreover, the final output results of Fast Fourier Transformation (FFT) assessments showed a better observable resolution for CHEAP than the studied control systems.
Robust Control of a New Asymmetric Teleoperation Robot Based on a State Observer
Authors: Shi Baoyu , Wu Hongtao , Zhu Yongfei , Shang Mingming
Published: September 2021

This study is mainly about the designation of a new type of haptic device and an asymmetric teleoperation robot system. Aiming at the problems of tracking and transparency of an asymmetric teleoperation system, a robust control algorithm based on a state observer was proposed. The Haptic Device was designed and was chosen as the master-robot of the system. The Baxter dual-arm robot was chosen as the slave-robot of the system. The simulation experiment of robust control based on a state observer of the asymmetric teleoperation robot was carried out. The experiment results showed that the maximum values of displacement tracking errors in three directions x, y, and z are 0.02 m, 0.01 m, and 0.015 m, respectively. Compared with single- joint PID control, the performance of the new control algorithm is improved. The force feedback experiment on the real asymmetric teleoperation robot system was carried out. The results showed that the force feedback wave is consistent with the actual situation and showed that the robust control algorithm proposed is superior to PID. Therefore, the algorithm perfectly satisfied the system. The experiment parameters also demonstrate that the haptic device satisfies the design requirements of the asymmetric teleoperation robots system and the industry standards.
Superconformal Line Defects in 3D
Authors: Penati Silvia
Published: September 2021

We review the recent progress in the study of line defects in three-dimensional Chern–Simons-matter superconformal field theories, notably the ABJM theory. The first part is focused on kinematical defects, supporting a topological sector of the theory. After reviewing the construction of this sector, we concentrate on the evaluation of topological correlators from the partition function of the mass-deformed ABJM theory and provide evidence on the existence of topological quantum mechanics living on the line. In the second part, we consider the dynamical defects realized as latitude BPS Wilson loops for which an exact evaluation is available in terms of a latitude Matrix Model. We discuss the fundamental relation between these operators, the defect superconformal field theory and bulk physical quantities, such as the Bremsstrahlung function. This relation assigns a privileged role to BPS Wilson operators, which become the meeting point for three exact approaches: localization, integrability and conformal bootstrap.
State of Health Estimation of Lithium-Ion Batteries Based on Electrochemical Impedance Spectroscopy and Backpropagation Neural Network
Authors: Zhang Sihan , Hosen Md Sazzad , Kalogiannis Theodoros , Mierlo Joeri Van , Berecibar Maitane
Published: September 2021

The global electric vehicle (EV) is expanding enormously, foreseeing a 17.4% increase in compound annual growth rate (CAGR) by the end of 2027. The lithium-ion battery is considered as the most widely used battery technology in EV. The accurate and reliable diagnostic and prognostic of battery state guarantees the safe operation of EV and is crucial for durable electric vehicles. Research focusing on lithium-ion battery life degradation has grown more important in recent years. In this study, a model built for state of health (SoH) estimation for the LTO anode-based lithium-ion battery is presented. First, electrochemical impedance spectroscopy (EIS) is used to study the deterioration in battery performance, measurements such as charge transfer resistance and ohmic resistance are analyzed for different operational conditions and selected as key characteristic parameters for the model. Then, the model based on a backpropagation neural network (BPNN) along with the characteristic parameters is trained and validated with a real-life driving profile. The model shows a relatively accurate estimation of SoH with a mean-squared-error (MSE) of 0.002.
Web-Based Micro Small and Medium Enterprises Product Brand Development
Authors: Handayani Trustorini , Widianingsih I , Julianti S , N Pebriani D
Published: September 2021

This research aims to determine the development of Industrial Revolution 4.0 technology in the Micro, Small, and Medium Enterprises (MSMEs) sector, to improve the standard of quality business product brands by creating a web-based information system. To support this research, we used qualitative descriptive research methods to describe existing phenomena, both natural and human engineering, that pay more attention to the characteristics, quality, and interrelationships between activities. The results show that product brand development for web-based small and medium enterprises is compelling so that it will be able to compete with other business product brands globally. This is due to a web-based information system created to introduce various products, the owners of MSMEs products. The information system was designed to input the MSME owners' data, starting from product brands, catalogs, and services. Therefore, the information system can help marketing and improve the owners' ability in the product brand development that can be used to compete in the global market. That way, the society can access various information about superior products from the MSME owners who have a product quality is no less good than other excellent products.
Morte e vida severina na perspectiva do trabalho
Authors: Costa Mélody Hármony Bezerra da , Ribeiro Giann Mendes
Published: September 2021

Este artigo faz parte dos resultados da dissertação de mestrado de título “O estudo do poema Morte e Vida Severina a partir da perspectiva do trabalho” e tem como objetivo apresentar a aplicação de uma sequência didática elaborada a partir do estudo do poema Morte e Vida Severina de João Cabral de Melo Neto. Como objetivos buscou-se apresentar uma proposta que integre questões relacionadas aos desafios no mundo do trabalho à Literatura. Como metodologia foi utilizada a pesquisa de intervenção realizada de forma remota com 21 alunos do IFRN. Foram enviadas videoaulas e realizadas discussões através de aplicativo de Smartphone. Observou-se que a maioria dos alunos ainda não conheciam o poema e abordá-lo proporcionou aos mesmos obterem uma percepção dialógica entre as condições do passado e do presente. Conclui-se que a aplicação do produto foi uma contribuição para as aulas de Literatura e proporcionou um ensino mais integrado.
A Computable Phenotype for Autosomal Dominant Polycystic Kidney Disease
Authors: Kalot Mohamad A. , El Alayli Abdallah , Al Khatib Mohammad , Husainat Nedaa , McGreal Kerri , Jalal Diana I. , Yu Alan S.L. , Mustafa Reem A.
Published: September 2021

Key Points

The ADPKD computable phenotype on the basis of ICD-9/10 is an excellent screening tool to identify patients with ADPKD.

Patients who were followed in nephrology clinics had a higher sensitivity, specificity, and positive and negative predictive values.

Specificity of the ADPKD computable phenotype is comparable with other medical conditions.

Background

A computable phenotype is an algorithm used to identify a group of patients within an electronic medical record system. Developing a computable phenotype that can accurately identify patients with autosomal dominant polycystic kidney disease (ADPKD) will assist researchers in defining patients eligible to participate in clinical trials and other studies. Our objective was to assess the accuracy of a computable phenotype using International Classification of Diseases 9th and 10th revision (ICD-9/10) codes to identify patients with ADPKD.

Methods

We reviewed four random samples of approximately 250 patients on the basis of ICD-9/10 codes from the EHR from the Kansas University Medical Center database: patients followed in nephrology clinics who had ICD-9/10 codes for ADPKD (Neph+), patients seen in nephrology clinics without ICD codes for ADPKD (Neph−), patients who were not followed in nephrology clinics with ICD codes for ADPKD (No Neph+), and patients not seen in nephrology clinics without ICD codes for ADPKD (No Neph−). We reviewed the charts and determined ADPKD status on the basis of internationally accepted diagnostic criteria for ADPKD.

Results

The computable phenotype to identify patients with ADPKD who attended nephrology clinics has a sensitivity of 99% (95% confidence interval [95% CI], 96.4 to 99.7) and a specificity of 84% (95% CI, 79.5 to 88.1). For those who did not attend nephrology clinics, the sensitivity was 97% (95% CI, 93.3 to 99.0), and a specificity was 82% (95% CI, 77.4 to 86.1).

Conclusion

A computable phenotype using the ICD-9/10 codes can correctly identify most patients with ADPKD, and can be utilized by researchers to screen health care records for cohorts of patients with ADPKD with acceptable accuracy.
USO DA MANIPUEIRA NA PRODUÇÃO SUSTENTÁVEL DE TOMATEIROS
Authors: Elias Nathércia Castro , Mendonça Valdenia Cristina Mendes , Alves Raimundo José Ferreira , Guterres Geibson Ribeiro , Bernardes Regina Helena , Bianchi Vanildo Luiz Del
Published: September 2021

O presente estudo teve como objetivo avaliar o crescimento vegetativo da planta de tomate sob três concentrações (5.000, 10.000 e 15.000 mg.L-1) do efluente da produção de farinha de mandioca, manipueira e suas influências no solo, com o uso na fertirrigação subsuperficial. O ensaio foi realizado no período de agosto a outubro em uma casa de vegetação no setor de olericultura no Instituto Federal de Educação Ciências e Tecnologia do Maranhão, no município de São Luís. O delineamento experimental adotado foi o inteiramente casualizado, com nove tratamentos, três repetições, sendo que em cada tratamento haviam três tomateiros totalizando 27 plantas, havendo um controle que foi adicionado somente água. O solo utilizado foi previamente autoclavado (120ºC/2 horas) e, logo após o resfriamento, colocado nas floreiras. Os sistemas foram implantados em floreiras com dimensão 80cm x 24cm x 21cm, onde foi utilizada uma manta de bidim para que o solo não se misturasse diretamente com a pedra brita e a manipueira. O perfil do solo foi de 13 cm, em todos os tratamentos. Os resultados obtidos demonstram que o solo apresentou valores mais significativos para o fósforo, em comparação com a amostra inicial retirada antes da fertirrigação subsuperficial. Não houve alteração significativa no pH do solo de todas as amostras dos tratamentos em comparação a amostra inicial do solo, mesmo havendo redução nos valores de Ca2+. Com relação ao crescimento vegetativo houve uma reposta significativa nos tratamentos com a concentração de 10.000 mg/L, apresentando melhores resposta no acompanhamento semanal da altura dos tomateiros, acompanhamento semanal da área foliar dos tomateiros, peso fresco da parte aérea, do sistema radicular e total dos tomateiros.
Identification and Characterization of Potential Biocide-Resistant Fungal Strains from Infested Leathers
Authors: Sundar Kavitha , Khambhaty Yasmin , Narasimhan Kannan Chandra Babu
Published: September 2021

This study is aimed at identification of biocide tolerant/resistant fungal strains afflicting the leather industry. Fungal infestation occurs sometimes despite biocide treatment during leather processing. This persistent growth can be due to the development of biocide resistance which can lead to health hazards and economic loss. As no study has so far been reported to either confirm this or to identify such fungal strains, a systematic approach has been made in this study to address these aspects. Fungal strains were collected from infested leathers from tanneries to identify biocide resistant fungal strains afflicting leather industry. Phenotypic characterization revealed Aspergillus as the most dominant with 58% occurrence. Ten isolates were subjected to 18s rRNA sequencing and four strains were identified as Aspergillus niger. An in-vitro susceptibility to four leather fungicides was assessed to identify the biocide tolerant strains. S-6 A. niger strain was found to be the most tolerant as evidenced by high MIC (7.81µg ml-1) against the most effective biocide, 2-(thiocyanomethylthio) benzothiazole. In-vivo studies on chrome-tanned leathers also confirmed this finding. SEM studies revealed considerable morphological changes in S-6 compared to wild strain providing further evidence that it may have developed biocide resistance.
Influence of Benzenecarboperoxoic Acid on Chamois Leather Process
Authors: Sahu Bindia , Alla Jaya Prakash , Jayakumar Gladstone Christopher , Raj Ashok
Published: September 2021

Stabilization of collagen against heat and enzyme is a key objective in the tanning process. In oil tanning, fatty acid present in the oil is oxidised mainly into aldehydes which interects with ? amino groups of collagen to form stable covalent cross links. Conventionally, oil tanning consumes time from two to three weeks which primarily depends on the type of oil and oxidation method for completion of tanning. In the present research, the duration of oil oxidation is reduced using benzenecarboperoxoic acid (PBA). It has been observed that PBA significantly reduces oil tanning duration from two weeks to 4 days. Moreover, the water absorption capacity of experimental leather has also increased by approximately 48% (1% PBA) compared to control leather. Physical strength properties such as tensile and percentage elongation values have also found to meet the standard norms. In addition to this organoleptic properties are also on par with control leather. The present study focus on the accelaration of chamois process for making leather, using PBA as an oxidising agent.
Limiting Microbial Activity as an Alternative Approach of Bovine Hide Preservation Part II
Authors: Sarker Majher I. , Yosief Hailemichael O. , Liu Cheng-Kung , Latona Nicholas P.
Published: September 2021

Wet salting of bovine hide commonly utilizes 95% saturated salt solution or 40-50% salt (w/w) on raw hide weight for preservation. The salt used for the hide preservation ends up being in wastewater and generates enormous environmental pollution. To minimize the environmental pollution problem associated with the traditional method of hide preservation, alternative formulations containing antimicrobial agents and less amount of common salt (35% saturated brine) have been developed. The alternative formulations were found to be more effective in deterring microbial growth than the traditional formulation as demonstrated by the total aerobic bacterial count of the preserved hide soaking liquor. The effect of the newly developed formulations on leather quality was assessed by analyzing the mechanical properties, scanning electron microscopic images, grain pattern and organoleptic properties of the finished leather. The quality analysis of the crust leather revealed that, the leather panels produced from the traditionally and alternatively preserved hides were comparable. The environmental impact of the newly developed formulations was also evaluated by monitoring the leather processing effluents for the pollution indicators such as total solids (TS), total dissolved solids (TDS), chloride content, Chemical oxygen demand (COD) and Bio-Chemical oxygen demand (BOD). Overall, the environmental impact of the newly developed hide preserving formulation was less severe than the traditionally used formulation. Since the newly developed formulations did not affect the quality of the leather produced and their impact on the environments is minimum, they could be considered as viable options for combatting pollution problems associated with the traditional salt curing method.
FREQUENCY MANIPULATOR WITH MINIMUM SHIFT AND COHERENT DETECTOR
Authors: ВОЛКОВ А.А. , АНТОНОВ А.А. , КУЗЮКОВ В.А. , МОРОЗОВ М.С.
Published: September 2021

Предложены новые варианты частотного манипулятора и когерентного детектора с минимальным сдвигом. Упрощена схема манипулятора, выполненного на автогенераторе, к колебательному контуру которого параллельно подключается индуктивность или емкость (в зависимости от знака манипулирующего сигнала). Получена новая формула для оценки выигрыша в помехоустойчивости когерентного детектора перед некогерентным.

In this article, new versions of a frequency manipulator and a coherent detector with a minimum shift are proposed. The manipulator is based on a self-oscillator, to the oscillatory circuit of which inductance or capacitance is connected in parallel (depending on the sign of the manipulating signal). A new formula is obtained for estimation of gain in noise immunity of coherent detector before non-coherent one.
Towards Food Security: the Prediction of Climatic Factors in Nigeria using Random Forest Approach
Authors: Egbunu Charity Ojochogwu , Ogedengbe Matthew Tunde , Yange Terungwa Simon , Rufai Malik Adeiza , Muhammed Habibat Iye
Published: September 2021

With the explosive growth in the world’s population which has little or no corresponding rise in the food production, food insecurity has become eminent, and hence, the need to seek for opportunities to increase food production in order to cater for this population is paramount. The second goal of the Sustainable Development Goals (SDGs) (i.e., ending hunger, achieving food security and improved nutrition, and promoting sustainable agriculture) set by the United Nations (UN) for the year 2030 clearly acknowledged this fact. Improving food production cannot be achieved using the obsolete conventional methods of agriculture by our farmers; hence, this study focuses on developing a model for predicting climatic conditions with a view to reducing their negative impact, and boosting the yield of crop. Temperature, wind, humidity and rainfall were considered as the effect of these factors is more devastating in Nigeria as compared to sun light which is always in abundance. We implemented random forest algorithm using Python programming language to predict the aforementioned climate parameters. The data used was gotten from the Nigerian Meteorological (NiMet) Agency, Lokoja, Kogi State between 1988 and 2018. The result shows that random forest algorithm is effective in climate prediction as the accuracy from the model based on the climatic factors considered was 94.64%. With this, farmers would be able to plan ahead to prevent the impact of the fluctuations in these climatic factors; thus, the yield of crops would be increased. This would dwarf the negative impact of food insecurity to the populace.
A INTERPRETAÇÃO DE UMA ESTROFE DA CANÇÃO “BREATHE”, DO U2, COMO UMA EXPERIÊNCIA RELIGIOSA E EM BREVE DIREÇÃO À DOUTRINA ESPÍRITA
Authors: Duarte Fernandes dos Passos Rogério
Published: September 2021

The study aims to consider one of the stanzas of the song “Breathe”, from the Irish rock group U2, and, overcoming the simple delight and the commonly visible in the music pop scene, make out an analysis and interpretation according to the Spiritist doctrine, especially in one of its fundamentals: the reincarnation.
O DESAFIO DO ENSINO SUPERIOR A DISTÂNCIA E SUA IMPORTÂNCIA NO CRESCIMENTO EDUCACIONA
Authors: Vieira da Silva Bernardo Alzeni , Ribeiro da Silva Carlos
Published: September 2021

Distance Education in Brazil is a reality present in several dimensions of youth and adult education, so this article, as a general objective, seeks to prove or not, whether distance education has the necessary support to offer quality education to the students. A bibliographic research was used, which indicated that Remotely University Education, despite still facing technological obstacles and need to improve it’s development, has been reaching expressive levels of growth and showing itself as an important public policy instrument. In comparison to classroom teaching, distance education has been increasing it’s scope, improving the quality of the content and didatics, and effectively opening doors to the job market, which also contributes to the growth of education in the country.
GESTÃO DE QUALIDADE - INTRODUÇÃO DA FERRAMENTA PDCA NAS ACADEMIAS DE GINÁSTICA
Authors: DE OLIVEIRA DA SILVA ALINE
Published: September 2021

This article aims to work with a quality management tool called P (plan / plan), D (do / execute), C (check / verify) and A (act / act) - PDCA, which aims to maintain a standard of excellence within the academies, always in constant evolution, improving all services and necessary aspects until reaching its goal, which is customer satisfaction with the services offered, carrying out preventive and corrective actions and the commitment of employees to their good result requiring compliance with a sequence of steps that must be developed and constantly reassessed. Thus, it is a tool for continuous improvement, in which the desired end result needs to be aligned with employees, and it can be said that, nowadays, quality is much more associated with the perception of service excellence.
UMA PERSPECTIVA LOGÍSTICA SOBRE A AMAZÔNIA AZUL E A IMPORTÂNCIA DA CABOTAGEM PARA UM DESENVOLVIMENTO SUSTENTÁVEL
Authors: SILVA PINTO RODRIGUES PAES AMANDA
Published: September 2021

In a world increasingly concerned with global issues involving sustainable development, the importance of balancing the transport pattern and its environmental impacts is evident. Brazil is a country of continental dimensions that has a population which the majority lives within 200 km of the coast. The maritime area called “Blue Amazon” due its size and richness found in it makes the use of maritime transport cannot be neglected. It is no coincidence that the cabotage sector has been growing consecutively even without the necessary investments in this area. The present work aims to understand the complexities of the transport sector that has the meaning of transport as logistical modes: road, air, rail, pipeline and water. For this reason, the goal is to correlate the meaning of transport and how Brazil can become competitive and adapt the UN guidelines in relation to sustainable development. Therefore, themes such as the decade of the oceans, the 2030 agenda, and the blue economy corroborate to understand the importance of sustainability in the development of green maritime transport. It is also necessary to understand how cabotage needs other transportations as a use of multimodality to have more sustainable logistics.
A IMPORTÂNCIA DA INFORMAÇÃO CONTÁBIL NAS PEQUENAS EMPRESAS
Authors: Regina Costa Gonçalves Kelly
Published: September 2021

Financial management is a topic studied by several authors, due to its paramount importance. However, small businesses, despite occupying a large space in the economic sector, find it difficult to remain in the market. Therefore, this article seeks to demonstrate the importance of accounting information for small business management. Through the qualitative methodology carried out at Miami Rio, it will be possible to identify and evaluate the difficulties that small companies face in managing the financial area. Finally, the work concludes that only through effective financial control is it possible to maintain a growth perspective for small companies.
COMPETÊNCIAS RELEVANTES PARA O PROFISSIONAL DO FUTURO - COMPETÊNCIAS LISTADAS PELO RELATÓRIO DO FÓRUM ECONÔMICO MUNDIAL E A PREVISÃO DE FUTURO DE YUVAL HARARI
Authors: Rodrigues Alves da Silva Daniele
Published: September 2021

We are living in a liquid world, we are inundated daily by hundreds of information, new technologies are made available to the great mass at a frequency never seen before, we are watched by algorithms that learn more and more with us. Much is discussed about the extinction of professions, considered essential, such as doctors, lawyers and teachers, which are already being replaced by artificial intelligence efficiently. In this scenario, what will be the skills of the professional who will stand out in the job market? How can this professional remain necessary in the face of more effective and efficient substitution by automation and algorithms? Essentially human skills, that are the most difficult to be replicated by machines, which involve empathy, ethics, collaboration are among the most valued,according to a report by the World Economic Forum about the future of jobs. Knowing these skills and their relevance to the current and future job market contributes to training of professionals able to survive a technological tsunami, in which the development of technical skills alone is no sufficient.
ANALISA KAPASITAS SAMBUNGAN KOLOM-BALOK BAJA MENGGUNAKAN STIFFENER PADA BALOK DENGAN CBFEM METHOD
Authors: Sapta Sapta , Farlianti Sari
Published: September 2021

CBFEM method adalah metode analisa finite element untuk menganalisa sambungan kolom-balok dengan memodelkan elemen sambungan secara detail dan presisi, dimana setiap elemen (plates and bolts) pada sambungan dihasilkan analisa tersendiri dengan FEA. Pada artikel ini disajikan hasil analisa kapasitas sambungan kolom-balok (sambungan baut) berdasarkan AISC 360-16 (ANSI/AISC 360, 2016) menggunakan CBFEM method dengan program bantu yaitu software IDEA Statica 2.1. Penentuan elemen-elemen sambungan (dimensi dan ukuran) menggunakan ketentuan dalam ANSI/AISC 358 “prequalified connections for special and intermediate frame for seismic applications”. Dari hasil analisa yang dilakukan dengan software IDEA Statica 2.1, didapatkan bahwa dengan menggunakan stiffener dapat mengurangi tegangan-regangan yang terjadi pada web balok, akan tetapi meningkatkan tegangan dan regangan yang terjadi pada top flange dan bottom flange. Untuk kapasitas sambungan tidak menimbulkan peningkatan yang signifikan.

 

Kata kunci : CBFEM method, stiffener, web, flange, vertical bracket
Aporte de las tecnologías del aprendizaje y conocimiento en las competencias digitales de los estudiantes de educación básica superior
Authors: Yoza Aracely , Vélez Villavicencio Carlina Edith
Published: September 2021

This research covers the results of the use of learning and knowledge technologies (LKT). Its objective was to recognize the effects of the application of ICTs in the digital competencies of students in higher basic education at the José María Santana Salazar educational unit in Ecuador from December 2020 to July 2021. The methodology used was a mixed qualitative-quantitative approach, the research was descriptive, the population consisted of teachers and students of the higher sub-level, the sample was selective. Surveys and an interview with an expert provided specific information. The results highlight those teachers believe that they have knowledge on this subject in 38% and consider that students do not have digital competencies in terms of information management and security in 75% and 85% respectively, at the same time they value its importance within learning as an innovative aspect for their task; although their activities are developed without the effective application of these. It is concluded that the effects of the application of ICTs are positive in motivating classes, facilitating the subjects, promoting the attention and commitment of the students; however, the application of these tools is deficient due to the digital gap and the lack of training of teachers.
Enseñanza creativa en entornos virtuales para el desarrollo de competencias emocionales
Authors: Aragundi Ketty , Game-Varas Cinthya
Published: September 2021

Esta investigación realizada en el nivel básico superior de la Unidad Educativa “José María Santana Salazar” del cantón Manta, tuvo como objetivo analizar la influencia de la enseñanza creativa en los entornos virtuales, para desarrollar competencias emocionales en los estudiantes.  Se empleó un enfoque cualitativo, de tipo exploratorio que recolectó puntos de vista de docentes y expertos en el tema mediante el instrumento de la entrevista, aplicada a una muestra intencional.  Entre los resultados se evidenció que los docentes incluyen estrategias creativas mediante mensajes motivadores, actitudes positivas, empatía, datos curiosos, dinámicas visuales, entre otros, con la finalidad de crear ambientes favorables para la enseñanza aprendizaje. Se concluye que los entornos virtuales no han permitido desarrollar satisfactoriamente las competencias emocionales en los estudiantes, presentando inconvenientes en la adaptación de la modalidad actual de estudio. Por tal motivo, los docentes han tenido que capacitarse de forma acelerada para afrontar con las exigencias que demanda la educación virtual, aplicando estrategias creativas e innovadoras.
A Study of the Covid-19 Impact on Financial Services, Healthcare and Education Sector
Authors: Karmakar Dr. Anupam
Published: September 2021

Organizations have already gone through a major digital transformation with the advent of the internet before. For many years they are incorporating technology in almost every aspect. The outbreak of global pandemic COVID-19 in the year 2020, which again disturbed the equilibrium, and forced the semi-automated and semi-digital legacy system-oriented organizations to shift radically towards digital transformation. In this paper, three major sectors have been covered– healthcare, financial services, and education which have undergone digital revolution effectively due to this pandemic. Digital Revolution has replaced or removed old ways of operations in those sectors and helped to reduce redundancies and waste of resources of any kind. Companies also face tremendous challenges regarding the adaptation of everything digital. The objectives of this paper are – to examine the impact of Digital shift in those sectors due to the COVID-19 pandemic and to predict the future prospect of the business with the current rate of incorporation with digital technology in these sectors, how managerial approaches when it comes to management functions like cost-effectiveness, leadership style, learning experiences have evolved to facilitate and incorporate this technology shift effectively. This research paper also studies the roadblocks faced by the organization on the way of digital transformation.
Open-Source Low-Cost Antenna Measurement Setup for Rapid Echoic Measurements
Authors: Wagih Mahmoud , Moody Thomas
Published: September 2021

With the massive growth in wireless systems and the internet of things vision, low-cost and rapid antenna measurements in echoic lab environments have attracted significant research, commercial, and educational interest in the last decade. In this paper, we present a low-cost antenna positioning system based on open-source positioning hardware, for in-situ 3-dimensional radiation pattern measurements. The positioner is an off-the-shelf Arduino robotic arm and can perform azimuth and elevation measurements over a hemisphere using different rotation mechanisms. The positioning system is used in conjunction with a commercial Vector Network Analyzer (VNA) and wire λ/2 antennas for the second VNA port. The measured radiation patterns of a flexible microstrip patch antenna using the proposed setup are compared to 3D full-wave simulations as well as anechoic chamber measurements. The measurement setup, excluding the VNA, costs less than $300, and does not require calibrated reference antennas, rotary connectors, or specific PC peripherals. The open-source design library is publicly available at git.soton.ac.uk/mahm1m19/antennameasurement_system/.
“Most of Them are Honourable”. Luigi Villari and the Armenians during the 1905-1906 Armenian-Tatar War
Authors: Ferrari Aldo
Published: September 2021

Luigi Villari’s book Fire and Sword in the Caucasus, published in London in 1906, is widely quoted by scholars working on the history of Transcaucasia, in particular in respect to the Armenian-Tatar war. Yet neither this text nor its author have been so far studied in detail. The Italian Luigi Villari (1876-1959) is a figure of considerable interest; he was a diplomat, traveler, and journalist. His father, Pasquale Villari (1827-1917), was an accomplished historian and politician who played an important role in nineteenth-century Italy; Villari’s mother was the British writer Linda White (1836-1915). It is remarkable that the author wrote a book an English at a time when this was not a popular language in Italy. He wrote extensively both in English and Italian about different topics, mainly related to history and international politics. It has been shown that, after the First World War, Villari joined Fascism and contributed actively to the regime’s propaganda in Great Britain. The present paper examines Luigi Villari’s book on the Caucasus, especially the author’s attitude towards the Armenians. I shall demonstrate that in his work, he handles negative stereotypes of the Armenians (“one of the most unpopular races of the East”), which were common in the Russian empire at the beginning of the twentieth century, in a rather interesting way.
J. Kochanowski, Treny. Treni. Lamenti, trad. di U. Norsa ed E. Damiani, a cura di G.O. Fasoli, introduz. di L. Marinelli, Agorà & Co., Lugano 2020, pp. 186.
Authors: Cabras Francesco
Published: September 2021

Book review
T. Tasso, Osvoboždennyj Ierusalim: poėma, perevod s ital. i primeč. R. Dubrovkina, Izdatel’stvo Ivana Limbacha, Sankt-Peterburg 2020, pp. 607.
Authors: Fumagalli Stefano
Published: September 2021

Book Review
I.N. Petrov, The Development of the Bulgarian Literary Language. From Incunabula to First Grammars. Late Fifteenth-Early Seventeenth Century, Lexington Books, Lanham 2021, pp. 190.
Authors: Garzaniti Marcello
Published: September 2021

Book Review
S. Šeatović, U zaleđu Sredozemlja. Mediteran u modernoj srpskoj književnosti, Institut za književnost i umetnost, Beograd 2019, pp. 352.
Authors: Banjanin Ljiljana
Published: September 2021

Book Review
Kazimierz Przerwa-Tetmajer’s Danae Tycjana Within the Framework of Schopenhauer’s Philosophy: Reading Ekphrasis Through the Prism of Aesthetic Experience
Authors: Swoboda Bartosz
Published: September 2021

This article aims to discuss the relationship between word and image in literary works devoted to the so-called ekphrasis. The present research is organised as follows: I first discuss the concept of contemplative aesthetic experience as elucidated in Schopenhauer’s philosophy, and then provide some theoretical reflections on its current interpretations; in the second part, I try to examine the poem Danae Tycjana from III Seria Poezji (1898), by the Polish modernist poet Kazimierz  Przerwa-Tetmajer, through the lens of the concept of contemplative aesthetic experience. The analysis here carried out within the theoretical framework presented contends that the rhetorical device of ekphrasis should be understood as verbalisation of aesthetic aspects and experience. The last part of this paper investigates Titian’s painting Danaë (1545-1546, Museo di Capodimonte, Naples), one of several examples of the genre of erotic mythologies in Western art popularized by Titian, as the foundation for Tetmajer’s aesthetic experience and source of ekphrasis.
Translations of Roscoe's Chemistry Books into Japanese and Hebrew - Historical, Cultural and Linguistic Aspects
Authors: Siderer Yona
Published: September 2021

This research studies two translations of Henry Enfield Roscoe's chemistry book of 1872 into Japanese (1873) and Hebrew (1929).  Roscoe's original chapter on candle burning is presented, in which he manifested his attitude to chemical experiments. The Japanese and Hebrew historical backgrounds of the translations, as well as their cultural and linguistic aspects are discussed. Roscoe's relations with Japanese scholars are presented.  The study moves between events in three countries, England, Japan and Israel. The importance and complexity of translation of science and its later results are discussed.
Spin Temperature and Dynamic Nuclear Polarization. From the History of Researches (1953 – 1983)
Authors: Kessenikh Aleksander
Published: September 2021

An attempt is proposed in the most concise form to provide the reader with a history of research and applications of dynamic nuclear polarization (DNP). The main attention is paid to the first three decades of DNP research, and the history of the discovery and development of multiparticle DNP and its relationship with the spin temperature approximation are outlined in some detail. The article emphasizes the role of such researchers as Anatol Abraham, Maurice Goldman, Michel Borghini, Thomas Wenckebach, Vadim Atsarkin, Boris Provotorov, Maya Rodak, Mortko Kozhushner, Levan Buishvili, Givi Khutsishvili. As far as possible, the contributions of many other scientists are considered. The establishment of a uniform temperature for nuclear spins due to the effect of spin diffusion was first proposed by Nicholas Blombergen in 1949. The content of the article is based on the bibliography available in the public domains, in particular on the memoirs of the research participants, and first of all on the materials of Atsarkin's 1978 review in Sov. Phys. Uspekhi and on the oral history of the development of the multiparticle concept of DNP effects, recorded from the speeches of the participants of the Moscow seminar "Problems of Magnetic Resonance" in 2001. A simplified description of the effects of DNP and a summary of the history of their discovery is given in section “Introduction”.
The shortest biographical data and portraits of participants in the DNP study are given in Appendix 1, and a selected bibliography on the problems of DNP and spin temperatures is given in Appendix 2. The bibliography divided into four sections according to the time and type of publication (I - historical research, memoirs; II – monographs, reviews; III - original publications 1953 - 1983; IV – some original publications of a later time, mainly during the transformation of DNP into an method for the implementation of nuclear magnetic spectroscopy and tomography in the interests of chemistry, biochemistry and medicine). The widespread use of DNP methods is evidenced, for example, by the fact, that by now company Bruker BioSpin has installed about 50 gyrotron based spectrometers for DNP operating upto 593 GHz worldwide to date.
The Revolution in Science in America, 1900-1950
Authors: Cohen Jack
Published: September 2021

The US lagged behind the European powers, Germany, Britain and France, in scientific research and development at the beginning of the 20th century. Why this occurred and how Germany and Britain supported their flourishing scientific research cultures are discussed. The first serious expansion in basic scientific research in the US occurred with the influx of European Jewish scientists fleeing Nazism in the 1930’s. They specifically brought with them knowledge of atomic physics. The influence of Vannevar Bush, who was Director of the Office of Scientific Research and Development during World War Two proved crucial for the expansion of civilian research and development after the War, supported by the Federal Government. Also after the War, Operation Paperclip brought German scientists to the US and they had significant influence on developments in aeronautics, rocketry and space exploration.
Dante Alighieri Science Communicator
Authors: Bischi Gian Italo
Published: September 2021

This paper deals with the issue of communication and dissemination of scientific knowledge outside the circle of specialists. In particular, in the occasion of the 700th anniversary of the death of Dante Alighieri, we will focus on the program for the popularization of knowledge outlined by Dante in the Convivio and De Vulgari Eloquentia, as well as several examples taken from his Divine Comedy concerning mathematical and natural sciences. Some solutions for communicating science proposed by Dante, such as the explanations of principles and scientific methods within a narrative framework (now often called the storytelling method), in addition to dialogues between characters, anticipate methods for science communication used by several authors after him. Examples are provided to show the depth of Dante’s knowledge concerning the basic concepts and methods of mathematics, physics and natural sciences (such as chemistry, meteorology, astronomy etc.). In addition, the examples demonstrate how effectively Dante used analogies and metaphors taken from sciences within his poetry.
Consumer preferences for Certified Wines in France: A Comparison of Sustainable Labels
Authors: Alonso Ugaglia Adeline , Niklas Britta , Rinke Wolfram , Gow Jeff , Moscovici Daniel
Published: September 2021

The wine industry has faced various environmental and social challenges. On the demand side, consumer demand for sustainable wines has been increasing but, to date, it is unknown whether consumers perceive wine companies’ efforts to obtain sustainable development (SD) certifications and labels as being valuable or how they differentiate them. On the supply side, sustainable wine production is increasing but producers report a lack of information to engage and select their SD strategy. This article uses a logistic regression and an artificial neural network model to show how French consumers differentiate and value different SD labels (Organic, Biodynamic, Sustainable, Fairtrade, Natural). Results show that consumers’ willingness to buy and willingness to pay are influenced by the importance each consumer gives to the certification. For all other drivers, consumers differentiate between labels, highlighting the importance of comparison between and knowledge about each of them, thereby aiding producers in choosing an appropriate marketing strategy.
Organic and Conventional Grape Growing in Italy: a Technical Efficiency Comparison Using a Parametric Approach
Authors: Cisilino Federica , Madau Fabio A. , Furesi Roberto , Pulina Pietro , Arru Brunella
Published: September 2021

Several studies have focused attention on the differences between organic and conventional farms in terms of efficiency, and controversial findings have resulted from these applications. One source of controversy concerns the assumption about the frontier(s) adopted for the comparison: a common frontier or two separate frontiers for organic and conventional methods? This paper aims to estimate technical efficiency in Italian grape farming. A stochastic frontier analysis (SFA) was applied to a sample of 531 farms (440 conventional and 91 organic farms) collected from the Farm Accountancy Network Database. Among others, a test for evaluating whether a unique or separate frontier was performed. The findings suggest that organic and conventional farms would lie on a common frontier and that organic farms have greater capacity than conventional farms in using their own technical inputs (efficiency amounts to 83.6% and 77.8%, respectively). A number of implications derive from these findings.
Wine Ratings and Advertising Strategies: Is There a Link?
Authors: Sellers Ricardo
Published: September 2021

Advertising is one of the most widely used marketing resources in the beverage industry, yet the wine industry has not made an intense use of this resource over time. The small average size of wineries together with rising concerns about the effectiveness of advertising has led many wineries to use alternative strategies to market their products: collective brands, the display of prizes and medals on their labels, or positive ratings in expert guides. In this sense, the objective of the present study was to analyse the behaviour of wineries regarding their use of advertising as a marketing resource. Specifically, we analysed the advertising strategy of wineries with respect to the existence of publicly available wine ratings. The method was based on the estimation of a Heckit model that simultaneously identifies the variables underlying the decision to invest in advertising and the determinants of the amount of money invested. The results revealed a nonlinear relationship between wine ratings and advertising investment.
The Impact of Virtual Technology on Teachers Candidates’ Self-efficacy: A Literature Revie
Authors: Sadia Bibi  , Abid Shahzad  , Malik Adeel
Published: September 2021

This study evaluated the impact of virtual technology on teacher candidates’ self-efficacy. Teacher self-efficacy based on empirical validity in face-to-face environments remains continuously, while it is a new concept in an online education environment. The following literature review conducted among different academic electronic databases and examined the 15 years passed published work. The literature review explores three major areas of research in online education about technology on teacher candidates’ self-efficacy. (1) self-efficacy of pre-service teachers by adopting virtual technology (2) association between teaching self-efficacy and virtual technology (3) changes in self-efficacy of a teacher before and after a professional development with the help of virtual technology. The study described that different researchers continuously examine the balance between pedagogical and technological knowledge that supports the professional development of pre-service teacher self- efficacy with the help of virtual technology, whether teacher self-efficacy differs in online education as compared to face-to-face education.