bluuebunny/crossref_metadata_2025 huggingface dataset:
Rethinking the role of underground political work in the struggle for the liberation of Mozambique, late 1950s- 1970s
Authors: Romão Saúte Saíde Alda
Published: May 2021

Studies on underground (or clandestine forms of political struggle) remain largely unknown with just a few of them published. The study focuses on underground political work in southern Mozambique from the 1950s to the 1970s. The main argument that the study seeks to make is that despite the intensification of colonial exploitation for the benefit of the Portuguese capital, violent repression, imprison and systematic denial of the exercise of political rights for most of the Mozambican people, the people of southern Mozambique had already a period of active underground political growth, inspired by the international political environment (decolonization process after World War II) and after connected to FRELIMO and its platform.  Small cells, mostly connecting educated, assimilated people, civil servants, artists, writers, painters, self-employed and workers developed underground activities ranging from the political task of organization, to political awareness, propaganda and spying, to the military task of recruitment for training abroad and to provide the military. Therefore, they countered Portuguese state propaganda and articulated an alternative political agenda. The underground political work had connections and continuity with other forms of struggle, such as with the colonial resistance of the 1950s and the FRELIMO struggle. The study combines primary and secondary written materials and oral accounts with underground political activists/militants.
Mercantilização do Fruto de Ixcacao
Authors: De Cambraia Martins Diego , Sales Melo André Luiz
Published: May 2021

Neste artigo pretendemos abordar a cadeia mercantil da principal mercadoria exportada do porto de Belém, o cacau. Trataremos de questões tais como a cobrança de tributos sobre a extração, organização dos primeiros cacauais manejados pelos colonos, sua exploração mais sistemática, usos da mão-de-obra, além das flutuações das exportações e seus resultados para a capitania do Grão-Pará. Intentamos também desvelar alguns aspectos de seu consumo na Europa, sua popularização no paladar da aristocracia europeia, bem como da burguesia e como isso impactou na produção do cacau, não só na região da Amazônia lusitana, como também no Estado do Brasil. Nosso recorte vai de meados do século XVII, quando o cacau começa a surgir na documentação portuguesa e finaliza em 1807, pois com a chegada da Corte no Brasil, no ano seguinte, houve uma mudança significativa no status da relação colônia x metrópole.
sequestro dos estádios de futebol
Authors: Lucas Morais Pinheiro Caio
Published: May 2021

O presente artigo examina os valores e os sentidos atribuídos por torcedores aos estádios de futebol diante dos embates em torno das novas arenas multiuso. A partir da experiência da Arena Castelão, localizada na cidade de Fortaleza, investigamos como os estádios de futebol se alicerçam enquanto bens culturais representativos de uma coletividade que ganham valor de patrimônio. À vista disso, o processo de arenização, ao atender as demandas de mercado e da lógica capitalista de produção do lucro no espaço futebolístico, provocou controvérsias e reações de diferentes agrupamentos coletivos de torcedores. Como sintoma e efeito das transformações hipermecantilizadas, este artigo avalia a emergência das torcidas antifascistas no século XXI em um quadro histórico mais amplo dos modelos coletivos do torcer, expressados por meio da metáfora do movimento primeira, segunda, terceira e quarta ondas. Dessa maneira, utilizando narrativas, imagens e periódicos como fontes históricas, sugerimos entender o processo de arenização como uma tentativa de sequestro dos mais genuínos valores, comportamentos, expressões e referência cultural que os estádios de futebol adquiriram, reordenamento imputado, portanto, à revelia dos torcedores.
Para que nos servem os súditos do filho do céu?
Authors: Cezar de Souza Lima Silvio
Published: May 2021

O presente artigo tem como objetivo analisar os discursos promovidos pelas elites imperiais brasileiras contra a imigração chinesa para o Brasil entre 1850 e 1890. Estes discursos eram informados por uma gama de preconceitos, baseados na hierarquização das raças humanas e percepções eurocêntricas de progresso. Em seus escritos sobre a imigração chinesa, intelectuais, políticos, médicos e fazendeiros condenavam a vinda de imigrantes para o Brasil alegando que estes trariam vícios, costumes incivilizados e se miscigenariam, “degenerando ainda mais” o tipo racial nacional. Utilizo, como documentos históricos: livros, artigos em periódicos especializados, artigos de jornais, relatórios e os anais do Congresso Agrícola de 1878, buscando compreender os discursos avessos à imigração chinesa no contexto maior dos debates sobre imigração europeia, crise de mão de obra na agricultura cafeeira e a formação da identidade nacional. Os discursos contrários à imigração chinesa demonstram o quanto as questões de colonização estavam ligadas à construção de uma identidade nacional europeizada. As políticas nacionais de imigração eram percebidas ao mesmo tempo como colonizadoras e civilizatórias, dirigidas por uma elite preocupada em homogeneizar a nação, europeizando e branqueando o Brasil.
Do Reino ao Império da Religião de Salvação Universal
Authors: Lagerwey John
Published: May 2021

Há muito tempo estou intrigado com o fato de que os impérios Romano e Han desmoronaram mais ou menos ao mesmo tempo, e que de seus escombros emergiram duas religiões universais de salvação – Budismo e Cristianismo – que se provaram indispensáveis para a reconstrução social e política. Conhecendo apenas os rudimentos da história ocidental, focalizarei o que considero a ideologia dos acontecimentos na China, deixando de lado os fatores econômicos e tecnológicos que desconheço.
Mānī on the Margins
Authors: Kósa Gábor
Published: May 2021

Mānī (216–ca. 277 AD), the founder of Manichaeism, was brought up in a Jewish-Christian community at the end of the Arsacid dynasty. After several private revelations, he established his own religion, which he and his disciples propagated in the newly established Sasanian Iran. Spreading east along the Silk Road, Manichaeism arrived in China in 694, where it remained basically a religio licita until 843. After the Huichang persecution (843–845), Manichaeans found a relatively safe harbour in the southeastern regions, especially in present-day Zhejiang and Fujian provinces, where they survived for centuries, as reports from the Song, Yuan, and Ming dynasties attest. In this paper, after summarizing the main events before the Huichang persecution, I give an overview of what the historical sources recording various manifestations of southeastern Manichaeism tell us about the latest form of Manichaeism, which uniquely survived in this peripheral region at a time, when it had completely disappeared from other parts of the world. This overview differs from other similar endeavours in that it also incorporates some new developments that were inspired by the discovery of a new corpus of texts from Xiapu and Pingnan counties, where it was the figure of Lin Deng (1003‒1059), who played a pivotal role to preserve the Manichaean heritage of the Tang.
Fontes da História das Ideias Linguísticas na China
Authors: Mahaut de Barros Barreto Cristiano
Published: May 2021

Foi durante o período formativo da cultura chinesa nas dinastias Zhou e Han que também gestaram-se as primeiras reflexões chinesas sobre sua língua e a linguagem de que temos registro. Vislumbrados de maneira mais ou menos explícita, nesta época surgiram os principais temas que nortearam a história das ideias linguísticas (HIL) na China: a relação entre os “nomes” e as “coisas,” o papel central da escrita e sua crucial característica iconográfica atentando para o aspecto semântico da língua escrita e suas profundas consequências para a estória que aqui foi se estruturando. Esta breve introdução discute os temas mais relevantes da HIL chinesa e discorre sobre textos e autores chave durante o período.
Dominante e subversiva
Authors: De Almeida Machado Vitória
Published: May 2021

Resenha do livro: Grecco, Gabriela de Lima. Palavras que resistem: censura e promoção literária na ditatura de Getúlio Vargas.  Rio de Janeiro: 7Letras, 2021.
tragédia esquecida
Authors: Soares Predebon Gabriel
Published: May 2021

Resenha do livro: Schwarcz, Lilia Moritz e Heloisa Murgel Starling. A Bailarina da Morte: a gripe espanhola no Brasil. São Paulo: Companhia das Letras, 2020.
Kristofer Schipper, a Taoist Among Us
Authors: Fava Patrice
Published: May 2021

Homage to Professor Kristofer Schippe
Grammatical Policies in the Texts of Thiru.Vi.Ka.
Authors: T Poongothai Priya
Published: May 2021

Attempts to enrich the language, such as composing new texts in the mother tongue, interpreting old texts, and quoting its glories. In this way, literatures in Tamil language are appearing from time to time.Through those discourses, each reveals his unique talents to this world and becomes the escapee of Tamilnadu. He has volunteered for the development of the Tamil language through speeches, writings, works and magazines. Among them, the grammar of Apper Feet's claim that 'my debt is to be done' is Tamilthenral Thiru.Vi.Ka.Literary and grammatical texts also need to be studied in today's context where research is being performed from many different angles in many fields. Among them in Tamil ‘Thiru.Vi.Ka.‘s prose style’ was created by his prose texts and literary texts are numerous.Through them one can know the textual principles of Thiru.Vi.Ka. The purpose of this study is to examine the grammatical principles found in the literary texts written by him, such as Karaikkalammaiyar Thirumurai - Note, Pattinathar Songs - Viruthiyurai, Thirukkural - Lecture.
Curatorial Processes in the Network Environment: Practice and Contexts from the 1980s
Authors: Arantes Priscila
Published: May 2021

The online environment has become an unprecedented space for the creation and diffusion of art and culture with the COVID-19 pandemic. The spread of the virus was a kind of catalyst that helped artists reach far beyond the specialized settings, proposing a series of creative and curatorial possibilities on the agenda since the emergence of the Internet. Within this context, this article aims at discussing similarities and differences in curatorial practices carried out for physical spaces and for digital environments, considering their conceptual, expographic, technological and accessibility-centered aspects for audiences. In the first part of the article, we will present a brief history of curatorial activity, with an emphasis on productions made in networks and on the network from the 1980s.
Methodology to calculate the density of the magnetic field generated in overhead transmission lines in HVDC applying a two-dimensional analysis of parallel poles above ground level
Authors: AGUILAR-MARIN Jorge Luis , CISNEROS-VILLALOBOS Luis , PADILLA-CANTERO Jorge Gabriel , VERGARA-VÁZQUEZ Julio Cesar
Published: May 2021

The growth in the demand for electricity has led to the development and application of technologies that make its means of transport more efficient. Thus, one of these options is the implementation of transmission lines in HVDC. One of important design parameters of these lines is to know their magnetic field distribution, when it is required to calculate it, there is no methodology that can be applied to HVDC transmission lines. The following article presents a methodology that allows obtaining the density of the magnetic field on the corridor of an overhead transmission line. A case study of a 500 kV bipolar line in HVDC is presented, the results obtained are compared using the commercial software Field and corona Effects (FACE), the results obtained are consistent with those obtained from the presented methodology. An analysis of the impact of the transmission line configuration on the magnetic field density is developed, defining the most efficient configuration.
Financial inequality: the relationship between consumer taxes and social programs in the Argentine Republic in the period 2015-2019
Authors: REZZOAGLI Luciano , GUTIERREZ-ALVARADO Rebeca
Published: May 2021

Despite the implementation of several Conditional Money Transfer Programs (CMT) and the consequent reduction in poverty and indigence rates, without ignoring that said reduction has been controversial due to its low level of evaluation and control; as well as the effective increment in job placement of vulnerable population sectors, Argentina keeps having high levels of inequality. From a financial analysis aspect, this situation is largely due to the consolidation of a highly regressive detractive system, characterized by the imposition of indirect taxes that are levied on productive and intermediate activities and final consumer products without taking into account the effective tax capacity of the actual or incidental recipients of the tax. In a country like Argentina, which belongs to the most unequal continent in the world, it is essential to start being, and not seem; by this, we mean that the fiscal system structure must pursue and encourage the achievement of a structural middle class, starting by having in consideration the severe economic asymmetries, which occur both at a population level as well at a regional geographic context. One of the main situations that countless families suffer is the lack of coordination of fiscal reforms that tend to the development and consolidation of a structural middle class through a progressive, inclusive and liable tax system.
Radiación fotosintéticamente activa evaluada en la ciudad de Zacatecas
Authors: Escobedo-Sánchez Mónica Montserrat , Conejo-Flores Ricardo , Durón-Torres Sergio Miguel , García-González Juan Manuel
Published: May 2021

The present investigation is related to one of the most important processes for the development of life on Earth; photosynthesis, an essential process in the cycle and development of living beings, centered on solar radiation that is useful for plants to carry out this process, Photosynthetically Active Radiation (PAR). The objective of this work is to generate information on the PAR through a database to collaborate in the decision-making of farmers in the area. For this purpose, a quantum sensor installed in building 6 of the UAZ Siglo XXI Campus was used. According to Abal (2013), in agricultural and production planning, it is especially important to have a detailed knowledge of incident solar radiation on the earth's surface (Abal and Durañona, 2013). When collecting, treating and analyzing the data, it was found that the daily average PAR is 819.52 μmol of photons m-2 s-1 (179.47 W m-2), if only the sunny hours are taken into account. It can be concluded that according to the PAR received in the evaluation region and the type of nutrients in the soil, other crop alternatives to those traditionally used can be sought.
Implementación electrónica del oscilador caótico de Rӧssler
Authors: Silva-Juárez Alejandro , Estevez-Carreón Jaime , Ponce-Mellado Juan Jorge , Herrera-Sánchez Gustavo
Published: May 2021

Chaotic systems have attracted the attention of the scientific community due to their potential applications in many branches of science and engineering, chaos theory is used in cryptography, in the creation of population models in biology, studying turbulence in mechanics of fluids, in economics it is used to predict the behavior of the stock market, in astronomy it is used to describe the motion of many planetary bodies, to improve the prediction of trajectories in asteroids and to determine whether or not they come into contact with the earth, in More recent years have been applied in the prediction and / or control of the dynamics of the human brain, a large number of works have been reported in different areas in order to address some interesting problems, such as the determination of structural damage in materials or in secure communication systems. In this work the implementation of chaotic oscillators in analog electronics is addressed, the case study of the autonomous non-linear dynamic system of Rӧssler is presented, the stability analysis of the system is developed, analytical, numerical and experimental results are included, as well as its Electronic implementation measured under laboratory conditions to observe experimental chaotic attractors, which will be used in the implementation of random number generators and secure communication systems for image encryption.
Caracterización en línea de la dinámica temporal de señales para el monitoreo del sistema eléctrico de potencia
Authors: Lezama-Zárraga Francisco Román , Chan-González Jorge de Jesús , Shih Meng Yen , Canto-Canul Roberto Carlos
Published: May 2021

The characterization of dynamic phenomena is essential for monitoring the Electrical Power System subject to disturbances. This article proposes an On-line time systematic approach to analyze and characterize the temporal evolution of transient and nonlinear oscillations in these systems. Two methods are used; the first method is based on a local decomposition of the signal under study into orthogonal basis functions to obtain the dynamics of transient oscillations. Next, a second method is applied to those orthogonal basis functions to obtain analytical signals and characterize the instantaneous amplitude, phase and frequency attributes of the oscillations and determine a physical interpretation of the system’s behavior. The proposed methodology is a time-frequencyenergy analysis which can be applied to the timesynchronized Phasor Measurement Units measurements. The results demonstrate that the proposed methodology provide an accurate characterization of transient phenomena with non-stationary effects.
Análisis térmico de una planta de potencia de ciclo combinado utilizando enfriamiento de aire a la entrada
Authors: Casados-López Edzel Jair , Cruz-Vicencio Raúl , Casados-Sánchez Álvaro , Horst-Sánche Álvaro
Published: May 2021

In this article, a combined cycle power station (gas-steam) is analyzed, considering air cooling before entering the compressor. Currently what is sought are higher thermal efficiencies, which is why the combined cycle power plants have been chosen, since they make better use of the fuel, producing greater net power, all of which have led to innovative modifications in the combined cycle power plants, improving the performance of this. In this research work, a 243 MW combined cycle plant is taken as the base, whose air temperature when entering the compressor is 32 ° C. Knowing in advance that one of the factors that affects the operation of this plant is the condition of the air when entering the compressor, which when it cools will increase its density and with it its mass flow, obtaining an increase in the power of the gas turbine. In view of this, this work proposes that through the use of a mechanical refrigeration system, air cooling to 15 °C is carried out at the compressor inlet and with this achieve an increase in plant performance.
Desarrollo de un algoritmo de programación SIG para estimar la evapotranspiración en los cultivos mediante sensores remotos
Authors: Servín-Prieto Alan Joel , Frías-Ramírez José Ernesto , Sifuentes-Morín Norma Guadalupe , Montemayor-Trejo José Alfredo
Published: May 2021

A study was conducted to evaluate the feasibility of GIS programming as a potential tool in the automation of image processing obtained by the LANDSAT 8 satellite to estimate evapotranspiration (ET) in crops. The objective was to develop an algorithm in python language implementing the SEBAL model. 35 complex equations were developed, which were automated for the processing of 13 scenes, thus covering the entire vegetative cycle of corn cultivation on the "Rancho Las Mercedes" property. For the validation of the results, the data measured by the INIFAP weather station network was consulted on the dates corresponding to the images. The results obtained show an RMSE ranging from 0.001 for the month of June to 0.013 for the month of April. The instantaneous ET values are between the ranges of 0.01 mm / hr and 0.80 mm / hr. Maps of their spatial distribution were generated, where it can be seen that the lowest ET values, those close to zero, correspond to human settlements and bare soils, while the highest values correspond to sites of vigorous vegetation and bodies of water.
Estrategias para incrementar el uso de la banca electrónica entre los usuarios de los servicios financieros
Authors: Gazca-Herrera Luis Alejandro , Garizurieta-Bernabe Jessica , Garizurieta-Bernabe Miguel Hugo , Gómez-Cabañas José Rafael
Published: May 2021

The bodies related to the financial system and banking, have the objective of increasing the number of people who make use of financial services, to have better control over the income received in the country. One of the strategies that financial institutions have implemented has been the use of electronic banking, however, they have not got the desired participation. It seeks to propose strategies that support the increased use of electronic banking. Through the data obtained in the field of investigation, strategic management matrices were designed to know the situation of the use of electronic banking. Besides, some strategies are generated that contribute its use, through the descriptive methodological design. Being a crosssectional study, it is limited in a single moment in time, so it is not possible to differentiate certain factors that could modify the result. Even so, the information obtained and the proposed strategies can be used by the entire financial system, contributing positively to the fulfillment of the objectives of the National Policy for financial inclusion and the National Strategy for Financial Education, joining efforts to the program of "Acceso Financiero Universal para 2020” promoted by the World Bank group.
Análisis de indicadores de ventajas comparativas reveladas: competitividad de las exportaciones de fresa (Fragaria spp.) mexicana
Authors: Quintero-Ramírez Juan Manuel , Omaña-Silvestre José Miguel , Ramírez-Padrón Laura Cecilia
Published: May 2021

China and the main United States of America producing strawberry countries in 2016, contributed as a whole more than forty per cent of the entire volume of strawberry produced in the world. Spain, the United States of America, Mexico and Netherlands are the main exporting countries, while the main importer countries were the United States of America, Germany, Canada, France and the United Kingdom; the same year, Mexico occupied the third place like producing and third place between the exporting countries. In the previous context, this one investigation raises the analysis of the competitiveness of the strawberry produced in Mexico as regards Spain and the United States of America those who are the biggest exporters of the product on a global scale; by means of the calculation of the index of revealed comparative advantage of Vollrath (IVCR) for the period 1994-2016, the analysis of the indicator recounts that the competitiveness was increasing and that Mexico is provided with a comparative advantage revealed in the strawberry exportation
Películas de SRO-HFCVD como dieléctrico en estructuras MIS y sus propiedades
eléctricas
Authors: Martínez-Hernández Haydee Patricia , Luna-López José Alberto , Hernández-De la luz José Álvaro David , Casco-Vásquez José Federico
Published: May 2021

This paper presents the results obtained by the electrooptical characterization of a MIS structure built by depositing a film of an Indium Tin Oxide (ITO) on a Silicon Rich Oxide (SRO) film using the Chemical Vapor Deposition Hot Filament (HFCVD) system. The SROHFCVD films were deposited considering two hydrogen fluxes levels at 25 and 100 sccm, under these conditions we grow single and double films, both being heat treated at 1100 ° C to improve their optical and structural characteristics. Through of the techniques of Null Spectroscopy, XPS and Photoluminescence, it was possible to determine the thickness of the SRO films, quantify the silicon excess present in them and analyze their spectra. These films are used as the active layer in Metal-Insulating-Semiconductor (MIS) structures, such structures were electrically characterized through the I-V curves. From the result of these characterizations a comparison is made between the MIS structures with films virgin (V) and with ones heat-treated (T-T). Characterizations indicate that SRO-HFCVD films with T-T significantly modify the optical and electrical properties of MIS structures, which is promising for the design of integrated optical sensors.
Diseño e implementación de un sistema de control a lazo cerrado PID para
manipular la temperatura en el proceso de termoformado
Authors: Rosales-Davalos Jaime , Gil-Antonio Leopoldo , Mastache-Mastache Jorge Edmundo , López-Ramírez Roberto
Published: May 2021

The purpose of this work lies in the design and implementation of a closed-circuit temperature control system (SCTLC), to control the temperature transfer in the mold of the thermoprepared system, where the blocks are manufactured from multilayer containers. post-consumer. The plant (electrical resistance) was characterized, with the AC voltage levels (30V, 60V, 90V and 120V) in a time of 60 min each of the voltage levels, considering the initial temperature (ambient temperature), in function of the step signal, then, the plant model was determined using Matlab software and the analytical method with the data of the plant characteristic curve at a voltage of 120Vac, obtaining the first-order transfer function, then The PID controller implemented the Ziegler & Nichols method and the Matlab software were tuned and finally the reference input, the control, the power stage, the plant and the feedback were coupled. This project contributes to control and stabilize the resistance temperature, implemented in the thermoforming process, for the production of blocks using multilayer containers.
Creation of environments and scenarios for learning based on internet habits: a theoretical approach for face-to-face, blended and distance education
Authors: SIORDIA-MEDINA Paul Rafael , URIBE-OLIVARES Nadia Sarahi , GONZÁLEZ-BASILIO Sofía de Jesús
Published: May 2021

The creation of virtual learning environments requires extensive pedagogical, methodological and technical knowledge that generates relevant training processes and contributes to the development of student learning. That is why this article presents a proposal for a theoretical framework from which environments and scenarios can be designed and developed based on the Internet habits of students and teachers. Various theoretical and author proposals are integrated that allow understanding the complexity of this great task not only for those who work in the non-school modality, but now for those who have had to make the transition from face-to-face to virtual, which has meant significant changes in their teaching practice, but not only for them, but the students have acquired new habits or reinforced those they already had in order to face the new challenges posed by changes in reality.
Cattle management plan. Experience with communal lands holder
Authors: SOLIS-CAMPOS Alicia
Published: May 2021

A systematization of a workshop course that took place in 2018 in the ejido of Nuevo Ideal, Durango, with the aim of agreeing actions to start a management plan, is presented. The workshop derived from work done to provide producers with tools and techniques that are useful for livestock exploitation, in addition to raising awareness of the need for actions for the protection and conservation of the natural resources offered to them by summer pasture ecosystems. The workshop was designed with five themes: Our Ejido, Livestock Management Plan, Grazing System, Infrastructure and Agreements. It is important to note that the agreement between PRONATURA northwest and the ejido for the implementation of a program that will help in the grazing system was the product of the workshop. The document is divided into three parts: Ejido, Design and implementation of the workshop, and Conclusions.
Photovoltaic solar power for a wastewater electrocoagulation prototype
Authors: Cantera-Cantera Luis Alberto , Calvillo-Téllez Andrés
Published: May 2021

A photovoltaic solar power supply is presented; it supplies energy to the electrodes of a wastewater treatment prototype by electrocoagulation. The source will be able to supply three voltages levels 10, 20, and 30 volts, with a current of 1000 mA. The system consists of an array of solar panels and Nickel Metal batteries. The amount of energy to be supplied by the solar panels is estimated, the level of storage in batteries is calculated and fed to the electrocoagulation system. The results of an experiment that operates independently of the power supply line and that works in rural areas are presented.
Design of a single-acting ammonia-water solar absorption cooling system for food preservation
Authors: Hernández-Gómez Víctor Hugo , Olvera-García Omar , De la Rosa-Flores Yarabi , Sánchez-Barrera Iveth
Published: May 2021

The increase in the use of non-renewable energy sources and the strong dependence of the energy sector on these sources, encourage the study of applications that use renewable energy sources. In this scenario, there has been an increase in the number of jobs related to refrigeration systems that use other sources of energy in addition to electricity, such as absorption cooling systems, which can produce a cooling effect using mainly heat. residual or other sources such as solar thermal energy. This article presents the design of a cooling system that will operate with solar energy, using the principle of absorption with the ammonia-water working torque in continuous function, to contribute to a cold production alternative in food preservation.
Diagnosis of study habits in engineering students in material innovation
Authors: SESENTO Leticia , LUCIO Rodolfo
Published: May 2021

The beginning of a university career is an opportunity that is given to young people when accessing higher education in Mexico, for the student it is hard work and at times it is saturated with difficulties, which manage to resist with motivation, and study habits that help students to finish the university career. The overall objective of this research is to analyze and promote habits to develop the Action Plan Tutorial of the next school year to promote activities that are in line with the interests of students. It is a cross-sectional descriptive investigation through surveys, since variables are not manipulated by naturally targeting phenomena or facts. To carry out this research, a simple sampling was carried out with second and fourth semester students of the Engineering degree in Material Innovation of the UMSNH (Universidad Michoacana de San Nicolás de Hidalgo). Description of the instrument. Study habits test, admits to appreciating and detailing study habits; which can be managed in groups and/or individual, in an average time of 15 minutes, consists of 20 items. With regard to the questioning if, do you study periodically and not just before the exam? 47% of students refer to only studying from time to time, while 32% study almost always. Environmental condition factors, study planning, material utilization, content assimilation, and sincerity of study habit scales generally show a low-to-normal moderate utilization level trend. Study habits in their different factors require improving the degree of use.
La tendencia del desarrollo sustentable en la educación en ingeniería en México
Authors: Marcos-Soriano José Antonio , Cruz-Gómez Marco Antonio , Mejía-Pérez / José Alfredo , Espinosa-Carrasco María del Rosario
Published: May 2021

The article discusses the implementation of constant updates in the management of the National College study programs, with the main goal to advance in a constantly changing Industry sector that requires engineers who could adapt themselves to the tendencies that build solid relations between forming Institutions of engineers (colleges) and the Industry sector, with the purpose of creating sustainable projects obtain the technical and technological development to help our society. The article presents a stage in which the Engineering students and the companies obtain the firmness of an ideology based on the commitment to develop or to adapt projects focused to constructing a sustainable environment that would impulse the technology in the local region, modernizing it. Many studies show the necessity of teaching and transmitting a development capable of guiding the Engineering student’s community to the path of a harmonic evolution with the society and the environment.
Tecnología aplicada a un modelo agroecológico para fomentar la cultura de la sustentabilidad en el TECMM, campus Puerto Vallarta
Authors: Garay-De La O Albino , Cantú-Munguía Irma Adriana , Medina-Lozano Alejandra
Published: May 2021

This is a project that aims to be a collective academic space for learning and research to strengthen processes of social activation linked to the management of the territory, the use of natural resources, the use of renewable energy and automation. It is to make the school a space for collective action in search of sustainability. The objective is to take advantage of the land, not yet built, of the José Mario Molina Pasquel y Henríquez Technological Institute, Campus Puerto Vallarta (TecMM, campus PV,) for organic planting, by integrating technological practices of sustainable management, promoting an experience of productive learning and community participation. The project has two approaches: educational and social. This investigation comprises, so far, two stages. The first stage was the manufacture of an automated hydroponic greenhouse for the ecology department of the Puerto Vallarta City Council. The second stage, currently under development, consists of implementing technology and automated mechanisms for farmland, proposes the total immersion of engineering for the interaction of man with nature. Relentlessly seeking, and accepting as our greatest challenge, the maximum use of resources, without neglecting the correct operation.
MÉTODOS ESTATÍSTICOS NÃO-PARAMÉTRICOS COMO FERRAMENTA NO MONITORAMENTO PLUVIOMÉTRICO
Authors: Gomes Junior Estevão Conceição , Ely Deise Fabiana
Published: May 2021

A precipitação desempenha um papel importante no ciclo global de energia e água. Seu monitoramento é de especial importância para a avaliação e gestão de água doce relacionada com o uso da terra, agricultura e hidrologia. Com isso, o alto interesse em análises da variabilidade da precipitação a longo prazo surge da necessidade de avaliar as mudanças climáticas. Para tanto, métodos estatísticos têm sido utilizados para monitorar o comportamento das variáveis climáticas e acompanhar possíveis tendências. Diante do exposto, o presente estudo tem como objetivo utilizar métodos estatísticos não-paramétricos, como Mann-Kendall e Curvatura de Sen e observar tendências e intensidades das mudanças pluviométricas na Região Geográfica Intermediária de Londrina (RGIL). Foram utilizados os dados diários, mensais e anuais de chuvas em 12 estações meteorológicas localizadas na RGIL e foram aplicados os testes de Mann-Kendall e Curvatura de Sen por meio do software Auto_MK_Sen. Os resultados indicaram tendências de aumento de chuvas em 5 dos 11 municípios da RGIL, todos localizados à norte, além da redução das chuvas no outono sob um nível de confiança estatística de 90%.
Epitaxial growth of BaSi2 thin films by co-sputtering of Ba and Si for solar cell applications
Authors: Du Rui , Li Fei , Yang Kaiwen , Li Qiang , Du Weijie , Zhang Yiwen , Suemasu Takashi
Published: May 2021

A new growth method for BaSi2 thin film has been developed by co-sputtering Ba and Si to solve the problem that it is difficult to sputter BaSi2 epitaxial films by a single BaSi2 target. A template layer was first optimized for the subsequent BaSi2 deposition. X-ray diffraction results revealed that BaSi2 epitaxial films with high crystalline quality have been achieved under different growth temperatures between 500 °C–600 °C and different growth rates from 9.37–16.7 nm min−1. Compared with molecular beam epitaxy, the growth rate of BaSi2 was increased by more than one order of magnitude. The new growth method provides a high-speed, low-cost way for the growth of high-quality BaSi2 thin films. BaSi2-based devices such as an n-BaSi2/p-Si heterojunction diode and a Ag/n-BaSi2 Schottky junction diode were also fabricated. We demonstrated the obvious rectifying properties in these junctions, which will be a guide to design and fabricate BaSi2 thin-film solar cells.
Estudo econômico da produção de milho de silagem no Sudeste de Goiás
Authors: Rocha Leilaine Gomes da , Cósmem da Silva Andrécia , Da Silva Araújo Matheus , Mendes Machado Laís Kelly , Borges Fernandes Fernando , De Oliveira Machado Leonardo
Published: May 2021

O milho é um cereal mundialmente cultivado; por esse motivo, e devido à sazonalidade da produção de forragem, o uso da silagem de milho como volumoso no período seco é de grande valia para os pecuaristas. Objetivou-se analisar os custos de produção e viabilidade econômica do milho silagem para uma área de 4 ha-1, no município de Ipameri, Goiás. Para a avaliação econômica, foram utilizados os indicadores: valor presente líquido (VPL), relação B/C (R B/C), payback descontado e receita bruta, além da aplicação da análise de sensibilidade a fim de verificar o comportamento da cultura diante das situações pessimistas de 10%, 20% e 30% de aumento nos custos. O custo operacional total foi de R$ 15.680,08 para a produção de 197 t, comercializadas a R$ 150,00/t, obtendo-se uma receita bruta de R$ 29.250,00. Os indicadores obtiveram os seguintes resultados: VPL R$ 71.634,32, R B/C 2,09 e payback em 1 ano. A análise de sensibilidade indicou que, mesmo com aumento considerável nos custos, o empreendimento mostrou-se rentável para a área em estudo. Portanto, a produção de milho silagem é economicamente viável para a região de estudo, sob as condições de manejo, clima e solo em que foi cultivado.
A STUDY ON ANTI-CANCEROUS CAPABILITIES OF PTP7 ON DIFFERENT CELL
LINES BY MTT ASSAY
Authors: Trivikram N. , Sreedharbhattar S. P.
Published: May 2021

In the present cancer advancing days, scientic investigation was catch up in studying the protein peptides involving in signalling pathways in
regulating cancer cell lines development and proliferation. In our current we focused on an essential peptide protein tyrosine phosphatase, which
plays an important role in signalling path way. This work evaluated the efciency of PTP7 against 3 cancer cell lines renal, breast and prostate
cancer lines by MTT assay. PTP 7 on Renal cancer cell line (HTB9) shown 73.660%, breast cancer cells (MFC-7) shown 79.313% and Prostate
cancer cells (PC-3) shown 87.559 % of viability by MTTassay. The advancing of protein tyrosine protease is concluded to have good viability over
can cell lines, as it can further investigated in controlling of cancer.
After the Pandemic: Tech, Work, and the Tech Workforce
Authors: Russell Aspen , Frachtenberg Eitan
Published: May 2021

This paper speculates on the technology workforce after the Covid-19 pandemic and its transition to remote work, from a perspective of diversity, equity, and inclusion.
Il significato incarnato dell’architettura
Authors: Johnson Mark L.
Published: May 2021

Reflects on the nature of human meaning making through architecture. Meaning mak-ing is understood to be situated, relational, qualitative, dynamic and enacted. To appre-ciate the significance of architecture we need to understand how meaning is structured through the body. Some image-body schemas include containment, verticality, balance, forces and motion. Architecture’s moral imperative is to creatively transform the condi-tions of human habitation and interaction.
Architettura e neuroscienze: una doppia elica
Authors: Eberhard John Paul
Published: May 2021

The founder of the Academy of Neuroscience for Architecture relates the story of its in-spiration in Jonas Salk’s insistence that his experience at the Abbey at Assissi helped him develop the vaccine for polio. He discusses the Golden Mean, children’s perceptual houses and optogenics, as well as the importance of designing incubators and neonatal intensive care units according to the developmental needs of infants, rather than the convenience of the medical staff, and open awareness as a creative approach to problem solving.
Simulazione incarnata, estetica e architettura: un approccio estetico sperimentale
Authors: Gallese Vittorio , Gattara Alessandro
Published: May 2021

This chapter, written by a cognitive neuroscientist and an architect, endeavors to suggest why and how cognitive neuroscience should investigate our relationship with aesthetics and architecture—framing this empirical approach as experimental aesthetics. The term experimental aesthetics specifically refers to the scientific investigation of the brain-body physiological correlates of the aesthetic experience of particular human symbolic expressions, such as works of art and architecture. The notion “aesthetics” is used here mainly in its bodily connotation, as it refers to the sensorimotor and affective aspects of our experience of these particular perceptual objects.
Does an entrepreneurial spirit animate fresh graduates in their work-seeking during uncertain times?
Authors: Fabbris Luigi , Scioni Manuela
Published: May 2021

The labour market is becoming harder and harder even for graduates. The economic difficulties added by Covid-19 restrictions worsened the graduates’ employability. In our opinion, public authorities should intervene to soften the school-to-work transition and graduates should become more entrepreneurial to overcome own market difficulties. We realised a survey on graduates from Padua University, the largest university in the Veneto region, Italy. In this survey, among other things, the entrepreneurial spirit of graduates was investigated. This spirit is intended as both the propensity to undertake an own business and the skill to find own ways and resources to overcome the possible difficulties while searching for a job either as employee or self-employed. It emerged that the propensity to start an own business concerns only a bunch of fresh graduates and that the capacity to implement personality resources is large among young people but remains unexplored because of cultural and contingent reasons.
Random effects regression trees for the analysis of INVALSI data
Authors: Vannucci Giulia , Gottard Anna , Grilli Leonardo , Rampichini Carla
Published: May 2021

Mixed or multilevel models exploit random effects to deal with hierarchical data, where statistical units are clustered in groups and cannot be assumed as independent. Sometimes, the assumption of linear dependence of a response on a set of explanatory variables is not plausible, and model specification becomes a challenging task. Regression trees can be helpful to capture non-linear effects of the predictors. This method was extended to clustered data by modelling the fixed effects with a decision tree while accounting for the random effects with a linear mixed model in a separate step (Hajjem & Larocque, 2011; Sela & Simonoff, 2012). Random effect regression trees are shown to be less sensitive to parametric assumptions and provide improved predictive power compared to linear models with random effects and regression trees without random effects. We propose a new random effect model, called Tree embedded linear mixed model, where the regression function is piecewise-linear, consisting in the sum of a tree component and a linear component. This model can deal with both non-linear and interaction effects and cluster mean dependencies. The proposal is the mixed effect version of the semi-linear regression trees (Vannucci, 2019; Vannucci & Gottard, 2019). Model fitting is obtained by an iterative two-stage estimation procedure, where both the fixed and the random effects are jointly estimated. The proposed model allows a decomposition of the effect of a given predictor within and between clusters. We will show via a simulation study and an application to INVALSI data that these extensions improve the predictive performance of the model in the presence of quasi-linear relationships, avoiding overfitting, and facilitating interpretability.
Short-term and long-term international scientific mobility of Italian PhDs: An analysis by gender
Authors: Tocchioni Valentina , Petrucci Alessandra , Minello Alessandra
Published: May 2021

In the last years, there has been a large increase in high-educated and high-skilled people’s mobility as a consequence of the internationalization and globalization, the weakening of research and university systems of sending countries (the “brain drain” process), the increase in skilled demand and improvements in higher education of host countries (the “brain gain” process). At the micro-level, academic mobility has positive consequences on occupational prospects and careers of researchers, both in the short- and long- run. Nevertheless, numerous research studies have demonstrated the challenges of engaging in international academic mobility for people with caring responsibilities, particularly women. Using Italian data on occupational conditions of PhDs collected in 2018 by Istat and modelling multinomial logistic regression analyses, we intend to verify if female researchers are associated with a lower international mobility irrespective their field of study, and the extent to which gender interacts differently in the various fields of study in affecting the probability of moving abroad after PhD qualification. Also, the distinction between long-term and short-term mobility, which has been mainly neglected in the literature concentrating on longer stays, has taken into account. In this respect, short-term mobility is a potentially high-value investment that may be pursued also by those researchers and scientists who cannot move for longer periods, such as women with caring responsibilities. In the literature, it is acknowledged that an experience abroad during early career may have positive effects on future occupational prospects. With our work, we intend to shed light on potential disparities on moving abroad that may exist among researchers in their early career by gender, and which could contribute to leave behind women in academia.
Measuring logical competences and soft skills when enrolling in a university degree course
Authors: Bertaccini Bruno , Bruni Riccardo , Crescenzi Federico , Donati Beatrice
Published: May 2021

Logical abilities are a ubiquitous ingredient in all those contexts that take into account soft skills, argumentative skills or critical thinking. However, the relationship between logical models and the enhancement of these abilities is rarely explicitly considered. Two aspects of the issue are particularly critical in our opinion, namely: (i) the lack of statistically relevant data concerning these competences; (ii) the absence of reliable indices that might be used to measure and detect the possession of abilities underlying the above-mentioned soft skills. This paper aims to address both aspects of this topic by presenting the results of a research we conducted in the period October – December 2020 on students enrolled in various degree courses at the University of Florence. To the best of our knowledge, to date this is the largest available database on the subject in the Italian University System. It has been obtained by a three-stage initiative. We started from an “entrance” examination for assessing the students' initial abilities. This test comprised ten questions, each of which was centered on a specific reasoning construct. The results we have collected show that there is a widespread lack of understanding of basic patterns that are common in the everyday way of arguing. Students then underwent a short training course, using formal logic techniques in order to strengthen their abilities, and afterwards took an “exit” examination, replicating the structure and the questions difficulty of the entrance one in order to evaluate the effectiveness of the course. Results show that the training was beneficial.