ESTUDO COMPARATIVO ENTRE METODOLOGIAS DE ESTIMATIVA DA EVAPOTRANSPIRAÇÃO DE REFERÊNCIA PARA LOCALIDADES DO NORTE DE MINAS GERAIS

ESTUDO COMPARATIVO ENTRE METODOLOGIAS DE ESTIMATIVA DA EVAPOTRANSPIRAÇÃO DE REFERÊNCIA PARA LOCALIDADES DO NORTE DE MINAS GERAIS LUCAS DA COSTA SANTOS1; LUCAS SANTOS DO PATROCÍNIO FIGUEIRÓ1; ALEX XAVIER RIBEIRO DE ANDRADE1; ANTÔNIO COSTA FERREIRA NETO1 E CAROLINE SALEZZI BONFÁ1 1 Departamento de Agronomia, Universidade Federal dos Vales do Jequitinhonha e Mucuri – UFVJM, Campus JK, Rodovia MGT 367-KM 583, nº 5000, Alto da Jacuba. CEP: 39.100-000, Diamantina, Minas Gerais, Brasil. E-mail: [email protected];[email protected];[email protected]; [email protected]; [email protected]. 1 RESUMO A determinação da evapotranspiração é imprescindível para a prática racional da irrigação, o que tem conduzido à formulação de diversas equações para estimativa desta importante variável meteorológica. Nesse sentido, faz-se necessário estudos comparativos com estas equações de modo a avaliar, localmente, sua aplicabilidade. Em linha com o exposto, objetivou-se comparar, para as condições climáticas de Salinas e Januária (ambos situados no Norte de Minas Gerais, Brasil), métodos empíricos de estimativa da evapotranspiração com o método padrão de Penman-Monteith (FAO56). Para tanto, utilizou-se dados meteorológicos de cinco anos (2016 a 2020) obtidos do Instituto Nacional de Meteorologia (INMET). Para a análise comparativa foram utilizados os seguintes indicadores estatísticos: coeficientes de determinação (R²) e correlação (r), erro absoluto médio (EAM), raiz do erro quadrado médio (REQM), índice de concordância (d) e índice de desempenho (c). Os resultados obtidos demonstram que, para as duas localidades avaliadas, o método de Blaney-Criddle apresenta o melhor desempenho para a estimativa da evapotranspiração, por outro lado, as equações de Hargreaves-Samani e Priestley-Taylor exibiram performance insatisfatória. Palavras-chave: métodos empíricos, demanda hídrica de cultivos, manejo da irrigação. SANTOS, L. C.; FIGUEIRÓ, L. S. P.; ANDRADE, A. X. R.; FERREIRA NETO, A. C.; BONFÁ, C. B. COMPARATIVE STUDY BETWEEN REFERENCE EVAPOTRANSPIRATION ESTIMATION METHODOLOGIES FOR NORTHERN MINAS GERAIS LOCATIONS 2 ABSTRACT The determination of evapotranspiration is essential for the rational practice of irrigation, which has led to the formulation of several equations to estimate this important meteorological variable. In line with the above objective was to compare, for the climatic conditions of Salinas and Januária (both located in the North of Minas Gerais, Brazil), empirical methods for estimating evapotranspiration with the standard method of Penman-Monteith (FAO56). For this purpose, meteorological data for five years (2016 to 2020) obtained from the National Institute of Meteorology (INMET) were used. For the comparative analysis, the following statistical indicators were used: coefficients of determination (R²) and correlation (r), mean absolute error (EAM), root mean square error (REQM), agreement index (d) and performance index (c). The results obtained demonstrate that, for the two locations evaluated, the Blaney-Criddle method presents the best performance for estimating evapotranspiration, on the other hand, the Hargreaves-Samani and Priestley-Taylor equations showed unsatisfactory performance. Keywords: crop water demand, empirical methods, irrigation management.

Comparison and Transition of Research Focus on Application of IT in Education

The application of Information Technology (IT) in education has opened new scenarios for this ancient process. With rapidly changing field of IT, the adoption of IT in education has been changed drastically. It is quite difficult for researchers to keep pace with changing research trends. An analysis based on the keywords could provide a synopsis on the use of IT in education. The keywords can be extracted and clustered to draw a sketch of trend changes over time. In this paper, we propose two empirical methods based on classic TF/IDF, i.e., overall rating (OR) and dynamic character (DC) of a keyword for in-depth keyword analysis to examine changing trends in research. The method help in disclosing time based changes in research focuses by comparing TF/IDF weights of keywords in different years. A total of 8131 scholarly articles from 12 well recognized journals were used in this analysis. The analysis shows that proposed methods provide sufficient insight into the research trends of application of IT in education in 11 years, i.e., 2007-2017.

Mixing Methodologies

Should research in a particular field follow the traditional or favoured methodologies associated with that field, or, if it is desirable for the empirical methods of research to be mixed, can the same not be said for the theoretical standpoint of the research design? Does mixing methodologies imply that methodologies can be placed on a sliding scale to create a new methodology from combining elements of the old; or does it imply an iterative or cyclical process, using a suitable methodology for the stage in the research? This chapter explores what combining qualitative and quantitative methods actually means in terms of social and educational research and how this can assist in developing a mixed methodological approach suitable for addressing wicked problems faced in education in the rapidly evolving Anthropocene epoch. To address these issues, the chapter proposes a new term for combining methodologies: ‘omniduction,' which encompasses induction, deduction and abduction and utilises each as the research, rather than the researcher, dictates.

A Systematic Literature Review of Empirical Methods and Risk Representation in Usable Privacy and Security Research

Usable privacy and security researchers have developed a variety of approaches to represent risk to research participants. To understand how these approaches are used and when each might be most appropriate, we conducted a systematic literature review of methods used in security and privacy studies with human participants. From a sample of 633 papers published at five top conferences between 2014 and 2018 that included keywords related to both security/privacy and usability, we systematically selected and analyzed 284 full-length papers that included human subjects studies. Our analysis focused on study methods; risk representation; the use of prototypes, scenarios, and educational intervention; the use of deception to simulate risk; and types of participants. We discuss benefits and shortcomings of the methods, and identify key methodological, ethical, and research challenges when representing and assessing security and privacy risk. We also provide guidelines for the reporting of user studies in security and privacy.

Industry Survey on the Current State of Stope Design Methods in the Underground Mining Sector

Stope design is a core discipline within mining engineering. This study analyzes the current state-of-the-art of stope design through a survey addressed to mining industry professionals. In stope design research the dominance of empirical methods has slowly shifted towards numerical methods. Recent advancements have mostly focused on the development of stope optimization algorithms. The survey consisted of 19 questions and was distributed to stope design experts via email, LinkedIn messages, and the Mining Industry Professionals network forum. In total, 36 responses of satisfying quality from 20 countries were received and analyzed. No dominance of a single stope design method was recognized. Empirical methods and personal expertise are still used widely. However, a readiness for change in stope design practice was indicated in 87% of responses. The current needs of the stoping-based underground mining sector are to increase the amount of geotechnical data, automate stope design and implement related software, and integrate these into general mine planning. According to 70% of the participants, acquired geotechnical data should be available within three days to be employed in design practice. The industry is ready to implement more efficient stope design methods if they offer results proven in case studies.

A Fractal Description of Fluvial Networks in Chile: a Geography not as Crazy as Thought

Chilean geography is highly variable, not only from a climatic and hydrological point of view, but also a morphological one, showing unpredictable natural patterns with marked contrasts throughout the country, for which sometimes it is considered as a "crazy" geography. In this paper we have investigated this apparent disorganized character by exploring the fractal properties of fluvial networks extracted from basins distributed across the continental territory. Analytical and semi-empirical methods were applied, finding striking patterns of organization in the distributions of Horton parameters and the fractal dimension of the drainage networks. Fractal dimension reveals to be quite dependent on the drainage area of each unit, showing clear groupings by tectonic and climatological factors. Such dimension reveals to be an important geomorphic parameter, if not the only one able to capture the real morphology of a fluvial network. From our results and despite the diversity of landforms, hydrological, climatic and tectonic conditions, Chilean’s geography is perhaps not as crazy and disorganized as believed.

Anti-corruption mechanism in Ukraine: content actualization under the conditions of normative innovations

The aim of the investigation was to determine the most appropriate avenues for further implementation of the European concept of anti-corruption. To carry out this article, general and special research methods have been applied, such as systems analysis, dialectical, formal logical and structural functional methods, as well as a series of empirical methods. Statistical analysis has been used to demonstrate anti-corruption measures, undertaken in 2016 - 2020. The anti-corruption mechanism has been analyzed through the prism of combined institutional and instrumental systems, with the aim of preventing corruption. The priorities for transforming the anti-corruption mechanism have been defined as follows: (a) increased accountability for corruption offences; (b) introduction and appropriate application of corruption detection tools. It is concluded that the current trend demonstrates a decline in the implementation of anti-corruption preventive tools in Ukraine due to the following factors: change of the vector of public interest towards compliance with anti-Covid-19 measures, destabilization of authority and lack of collaboration between authorized subjects in solving corruption problems.

Human Identity as Freedom Statement in the Philosophy of Child Education

The purpose of this article is to reveal the specific features of personality-oriented education and to consider how a person, being in dialogue with another person, can declare freedom only by an act of own free will. To achieve the goal set, the authors have used a set of theoretical and empirical methods of analysis, description, comparison, extrapolation, synthesis, hermeneutic methodology, and a method of implication. Cross-sectional studies and case studies have also been used at the intersection of philosophy and psychology. It is emphasized that in the Ukrainian framework of the representation, this problem demonstrates the following – the “old” system of education, formed on the principle of necessity, has demonstrated its inef- fective mechanism of action through a system of prohibitions and oppression. The “new” system of educa- tion, built on the principle of freedom, relies on its effectiveness, rejecting necessity and eliminating com- pulsion. However, the methodological error of creating something new by destroying the old and ineffi- cient is becoming more and more evident.

Testing as an Effective Method for Assessing the Quality of Students' Training Achievements

Electronic educational resources including testing, which simplify the process of searching and structuring educational information have been used more often in educational organizations recently. They have made learning more accessible and interesting for students of higher and vocational education institutions, especially in the context of a pandemic. The article provides a brief theoretical justification of the advantages of testing students' academic achievements. The emphasis is placed on the importance of testing as a tool for remote control of students' knowledge, the advantages and disadvantages of using tests both in the educational process of higher and secondary vocational education and in order to control the acquired knowledge are revealed. The study was carried out by the authors on the basis of a comprehensive use of theoretical and empirical methods. The leading theoretical methods were: analysis, generalization, concretization, forecasting, modeling. The work used such empirical methods as conversations, pedagogical observation, questionnaires, expert evaluation, testing, analysis of performance, generalization of pedagogical experience, methods of statistical processing of experimental data. The results presented in the article of the study of testing of students of MPSU at the initial (entrance test), current and final stage of measuring the level of educational achievements of students demonstrated an increase in the values of the effectiveness of testing at all stages of its implementation, an increase in the effectiveness of test control at the intermediate and final stages of the study. The results of the study made it possible to formulate promising directions for the development of problems of testing the quality of education of students of higher and professional education organizations: improving the forms and methods of analysis and interpretation of test results based on the invariant application of test models: improving the psychological and pedagogical orientation of the use of the testing algorithm for personalized learning trajectories in the practice of mass education, etc.