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Journal articles on the topic 'Software R and Gretl'

Author: Grafiati

Published: 7 September 2021

Last updated: 29 July 2025

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1

Niu, Gao, Richard S. Segall, Zichen Zhao, and Zhijian Wu. "A Survey of Open Source Statistical Software (OSSS) and Their Data Processing Functionalities." International Journal of Open Source Software and Processes 12, no. 1 (2021): 1–20. http://dx.doi.org/10.4018/ijossp.2021010101.

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This paper discusses the definitions of open source software, free software and freeware, and the concept of big data. The authors then introduce R and Python as the two most popular open source statistical software (OSSS). Additional OSSS, such as JASP, PSPP, GRETL, SOFA Statistics, Octave, KNIME, and Scilab, are also introduced in this paper with function descriptions and modeling examples. They further discuss OSSS's capability in artificial intelligence application and modeling and Popular OSSS-based machine learning libraries and systems. The paper intends to provide a reference for reade

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Marques, Rodnei Alves. "Ajuste temporal do salário mínimo real com modelos SARIMA." ForScience 10, no. 2 (2023): e01167. http://dx.doi.org/10.29069/forscience.2022v10n2.e1167.

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As discussões sobre o salário mínimo se iniciaram na década de 1930 visando diminuir desigualdades sociais e melhorar a relação entre trabalhadores, empregadores e estado. No ano 2000, o governo federal aprovou uma lei que permite aos estados fixarem pisos salariais acima do mínimo federal. A presente proposta procura ajustar um modelo SARIMA a série dos salários mínimos estaduais com objetivo de fazer previsões futuras. As séries foram ajustadas com a metodologia de Box & Jenkins com utilização dos softwares R e GRETL. Foi observada uma tendência crescente histórica ao longo dos anos para

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O O, Lawal, Nwakuya M T, and Biu O E. "Trend Analysis and GARCH Model for COVID-19 National Weekly Confirmed Cases in Nigeria for Abuja and Lagos State." Quarterly Journal of Econometrics Research 8, no. 1 (2022): 1–10. http://dx.doi.org/10.18488/88.v8i1.2931.

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The trend analysis and GARCH model for COVID-19 pandemic spread between FCT/Lagos and the National Weekly confirmed pandemic cases were carried out using the statistical software Minitab17 and Gretl. Four models trend behavior were considered, which are linear, quadratic, cubic and quartic trends with respect to R-square value, Adjusted R-square value, Analysis of Variance (ANOVA) p-value and the estimated coefficients p-values. In addition, GARCH(0,1),GARCH(1,0) and GARCH(1,1) models were built separately for both FCT/Lagos on the Nigeria National Weekly confirmed pandemic cases; to determine

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Onuorah, A. C., and B. A. Ozurumba. "Firm’s Engagement in Corporate Social Responsibilities in Nigeria." Journal of Management and Strategy 9, no. 4 (2018): 37. http://dx.doi.org/10.5430/jms.v9n4p37.

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This study examined firms engagement in corporate social responsibilities in Nigeria using secondary data derived from the audited annual reports of the five (5) selected listed Oil and Gas Companies in Nigeria from 2008 - 2017. The study proxied firm’s involvement by Firm Age (FMA), Employee Turnover (EPT), Customers Satisfaction (CSF) and Reputation (RPT) as the independent variables, while Responsibility of firms in Nigeria was proxied by CSR as the dependent variable. The study applied GRETL software, and used Ordinary Least Square (OLS) for the estimation of the result. The results reveal

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Hatane, Saarce Elsye, Christina Zanderet’s, and Josua Tarigan. "Intellectual Capital Disclosure in Determining the Economic Value Added Spread of Service Companies in Indonesia." Jurnal ASET (Akuntansi Riset) 11, no. 1 (2019): 55–70. http://dx.doi.org/10.17509/jaset.v11i1.15874.

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Abstract. This study aims to observe the of intellectual capital disclosure on ECONOMIC VALUE ADDED (EVA) Spread. The study is conducted at a service industry sector, listed on the Indonesia Stock Exchange in the 7 years observation period, 2010 to 2016. This study examines 427 firm years from 61 companies. Human Capital Disclosure (HCD), Relational Capital Disclosure (RCD) and Structural Capital Disclosure (SCD) are used to measure intellectual capital disclosure as the independent variables. Another independent variable is Return on Assets (ROA), return on equity (ROE) and Operating Cash Flo

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Biu, Onyinebifun Emmanuel, Maureen Tobechukwu Nwakuya, and Gamage Tubona. "Assessment of Asymptotic and Logistics Growth Models on A Chemist Data." European Journal of Mathematics and Statistics 3, no. 5 (2022): 7–15. http://dx.doi.org/10.24018/ejmath.2022.3.5.132.

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This research considers two growth models; asymptotic growth model and logistic growth model. Both models were compared to establish a better model for modelling and prediction based on a Chemist data on the percentage concentration of isomers versus time for each Isomerization of α-Pinene at 189.50C. Results from the growth curve shows a non-linear relationship between the response (time of isomerization) and the independent variables (percentage of concentration) for all the four isomers considered. Based on the four isomers four different quadratic regressions of second-order were fitted. T

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Marques, Rodnei Alves, and Spencer Barbosa da Silva. "Análise temporal das taxas de suicídios no estado de Minas Gerais com modelos ARIMA." ForScience 8, no. 2 (2020): e00842. http://dx.doi.org/10.29069/forscience.2020v8n2.e842.

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O autoextermínio tem aumentado em Minas Gerais em todas as faixas etárias. Tal fato, além de resultar em perda de vidas humanas, demanda recursos públicos que poderiam ser aplicados em outras áreas da saúde. Isto posto, esse trabalho tem como objetivo modelar e fazer previsões para as taxas específicas de suicídio por sexo no estado de Minas Gerais. Estas análises, juntamente com estudos clínicos, podem compor mais uma alternativa para os órgãos de saúde, auxiliando-os no preparo de ações que possam diminuir de forma efetiva o número de suicídios. As séries foram ajustadas com a metodologia de

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Delfino, Otávio Augusto dos Santos, Pedro Henrique Alves Bittencourt Santos, and Ricardo Vitor Ribeiro dos Santos. "Adjustment of a Time Series model to predict flow in the Funil / MG hydroelectric plant." Sigmae 10, no. 1 (2021): 34–46. https://doi.org/10.29327/2520355.10.1-3.

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A instalação de barragens para a construção de usinas hidrelétricas no Brasil iniciou-se a partir do século XIX. É um modelo de geração de energia limpa e segura. Um dos fatores que mais influenciam a operação das usinas hidrelétricas é a vazão das águas no reservatório. Existe um volume mi´nimo de água que deve estar represada para conseguir acionar a turbina e gerar energia elétrica. Prever os valores dessa vazão é de extrema importância para o planejamento dos sistemas hidrelétricos. Diante do exposto, este trabalho terá como objetivo ajustar um modelo de Séries Temporais à série da vazão m

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Espinas, Elizabelle Alexandra, Mhikyla Isabel Moreno, and Peter Jeff Camaro. "The Impact of Education Expenditure, Gross Enrollment Ratio, Technological Innovation, and Foreign Direct Investment toward Employment and Job Mismatch." International Journal of Economic Policy 4, no. 4 (2024): 25–50. https://doi.org/10.47941/ijecop.2409.

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Purpose: The study aims to analyze education expenditure patterns and the impact of the number of graduates in the employment of the Philippines, and evaluate the integration of technological innovation and foreign direct investment and its relationship with employment. Moreover, future researchers can utilize this paper to understand the factors affecting employment in the Philippines. Methodology: This research utilized a descriptive-quantitative approach to explore and statistically analyze the relationships between the variables. Secondary data was collected mainly from the World Bank Data

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MINNULLIN, MARSEL M., OLEG G. BODROV, ARTUR M. DELYAN, and REZEDA A. BODROVA. "CAUSE ANALYSIS OF THE LABOR OPPORTUNISM OF CLINICAL STAFF." Bulletin of Contemporary Clinical Medicine 17, suppl.1 (2024): 40–47. https://doi.org/10.20969/vskm.2024.17(suppl.1).40-47.

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Abstract. Introduction. The nature of labor opportunism, especially in Russian institutions, is informal, it acts as a “counterbalance” to the existing formal legally accepted rules, supplementing their shortcomings, outdated provisions, and ineffective communication processes created based on the above. The opportunism of personnel and organizational leaders is aimed at restoring the broken balance between their mutual expectations. Labor opportunism is the response to the management opportunism found in most organizations in abundance. The aim of the study is to analyze the methods of detect

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Baiocchi, Giovanni, and Walter Distaso. "GRETL: Econometric software for the GNU generation." Journal of Applied Econometrics 18, no. 1 (2003): 105–10. http://dx.doi.org/10.1002/jae.704.

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Lemenkova, Polina. "Regression Models by Gretl and R Statistical Packages for Data Analysis in Marine Geology." International Journal of Environmental Trends 3, no. 1 (2019): 39–59. https://doi.org/10.5281/zenodo.3253803.

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Gretl and R statistical libraries enables to perform data analysis using various algorithms, modules and functions. In this study, the geospatial analysis of example case study of Mariana Trench, a deep-sea hadal trench located in west Pacific Ocean, was performed using multi-functional combined approach of both Gretl and R libraries. The study aim was to model and visualize trends in variations of the trench’s properties: bathymetry (depths), geomorphology (steepness gradient), geology, volcanism (igneous rocks). The workflow included following statistical methods computed and visualize

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РЕЗНИК, В. Р., В. В. СЁМКА, А. Н. КАЛИНИЧЕНКО, А. П. ГОРБАТКО, and Н. Н. ЯРОМЕНКО. "THE INFLUENCE OF ECONOMIC AND SOCIAL FACTORS ON THE LEVEL OF REGIONAL UNEMPLOYMENT." Экономика и предпринимательство, no. 8(169) (August 30, 2024): 505–9. http://dx.doi.org/10.34925/eip.2024.169.8.098.

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В статье рассмотрены показатели макроэкономического развития страны. На примере ключевого макроэкономического показателя - уровень региональной безработицы, произведена оценка влияния экономических и социальных факторов. Анализ осуществлялся путем составления регрессионной модели по статистическим данным случайной выборки из 20 субъектов Российской Федерации. По итогам исследования, в качестве существенного фактора признан валовый региональный продукт. Анализ и эконометрическое исследование осущствлено с использование программного продукта Gretl. The article examines the indicators of the coun

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Weinert, Adam, and Rafał Czupryn. "The influence of capital markets on Austria's economic growth." Central European Review of Economics & Finance 45, no. 4 (2023): 137–45. https://doi.org/10.24136/ceref.2023.028.

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This research undertook a comprehensive assessment of how capital market have affected Austria's economic development, scrutinizing data spanning from 1975 to 2020. In pursuit of this objective, the study meticulously constructed an econometric model utilizing the GRETL software, a tool known for its robust analytical capabilities in economic modeling. This model was specifically designed to probe the extent to which the capital market have been a driving force behind Austria's economic progress. Once the model was in place, it was applied to the aforementioned dataset using the GRETL program,

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Nasybullin, Ayrat Marsovich. "ASSESSMENT OF THE IMPACT OF FACTORS ON THE ALLOCATION OF POINTS FOR CONTAINER TRAINS OPERATING ACCORDING TO TECHNOLOGY OF FIXED FORMATIONS." World of transport and technological machines 86, no. 3-1 (2024): 23–34. http://dx.doi.org/10.33979/2073-7432-2024-3-1(86)-23-34.

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The article describes the assessment of the operability of the main provisions of the previously developed methodology for assigning stopping points for container trains, which are plying according to the technology of fixed formation. To assess the impact of individual factors, re-gression modeling was performed using the least squares method with the econometric software product Gretl. The results allowed us to confirm the hypothesis about the rationality of assigning stops to container trains operating according to the technology of fixed formation.

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Aliev, Ayaz, Madina Magomadova, Anna Budkina, Mustafa Harputlu, and Alagez Yusifova. "EU: The Effect of Energy Factors on Economic Growth." Energies 16, no. 6 (2023): 2908. http://dx.doi.org/10.3390/en16062908.

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In this article, we investigate the effect of different energy variables on economic growth of several oil-importing EU member states. Three periods from 2000 to 2020 were investigated. Three different types of regression models were constructed via the gretl software. Namely, the OLS, FE, and SE approaches to panel data analysis were investigated. The FE approach was chosen as the final one. The results suggest the importance of the consumption of both oil and renewable energy on economic growth. Crises of certain periods also had a noteworthy effect as well.

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Wójtowicz, Łukasz, and Rafał Czupryn. "The impact of the capital market on economic growth in Luxembourg." Central European Review of Economics & Finance 44, no. 3 (2023): 175–85. http://dx.doi.org/10.24136/ceref.2023.019.

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In this article, a detailed analysis of the impact of capital markets on economic growth in Luxembourg is presented, utilizing annual economic data. The study spanned from 1975 to 2020. As part of the analysis, an econometric model was constructed and estimated using the GRETL software. The results obtained confirm that the capital market has a statistically significant impact on Luxembourg's economic development. This research provides new insights into the role of capital markets in shaping economic growth dynamics, which is crucial for understanding the economic mechanisms in small, open ec

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КАЦКО, И. А., Н. Н. ЯРОМЕНКО, and Д. А. ЗАДОРОЖНЫЙ. "ALGORITHM FOR CONSTRUCTING DIAGNOSTICS OF VECTOR AUTOREGRESSION MODELS OR VAR MODELS IN THE GRETL SOFTWARE PACKAGE." Экономика и предпринимательство, no. 5(154) (July 1, 2023): 1185–91. http://dx.doi.org/10.34925/eip.2023.154.5.237.

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Статья посвящена вопросам реализации моделей векторной авторегрессии (VAR) в кросс-платформенном программном пакете Gretl. Модели векторной авторегрессии являются современным инструментом анализа динамики нескольких связанных друг с другом временных рядов. VAR-модели конструктивно отличаются от систем одновременных уравнений, использующих априорные ограничения на структурные параметры уравнений системы для решения проблем эндогенности регрессоров. В качестве предварительной обработки данных при построении авторегрессионных моделей необходимо проверить временные ряды, включенные в вектор эндоге

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Santana, IF, and CEC Freitas. "A time series analysis of Prochilodus nigricans landings caught by small-scale fisheries in the lower stretch of the Amazon River." Brazilian Journal of Biology 73, no. 1 (2013): 53–59. http://dx.doi.org/10.1590/s1519-69842013000100007.

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We developed a time series analysis using data on curimatã (Prochilodus nigricans), which landed in Santarém, a small city located on the right banks of the Amazon River. A 10-year record of monthly average catches per day of P. nigricans was analyzed using forecasting procedures in the open-source software GRETL 1.7.8. We established two models from the identifications made with the correlograms of hyperparametrization and seasonal differences. The autoregressive terms of the model reach three years, indicating that individuals of the species are being caught around the age of three. This may

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Piedrahita Ramírez, Jessica María, and Laura Tatiana Nieto Quintero. "DETERMINANTES DE LA INVERSIÓN EXTRANJERA DIRECTA PARA COLOMBIA EN EL PERIODO COMPRENDIDO ENTRE 2000-2018." Revista de Investigaciones Universidad del Quindío 31, no. 1 (2019): 73–83. http://dx.doi.org/10.33975/riuq.vol31n1.265.

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Dada la importancia que viene adquiriendo la inversión extranjera directa en los países, esta investigación se planteo como objetivo encontrar los factores determinantes de la Inversión Extranjera Directa que ingresa a Colombia en el periodo comprendido entre el 2000-2018, a través del análisis econométrico de series temporales en el software de libre distribución Gretl, cuyos resultados arrojaron que a pesar de que la tasa de desempleo y la tasa de interés son los factores que más influyen en la atracción de este tipo de inversión al país, son las dinámicas internacionales las que contribuyen

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Zubalova, Lubica, Kristina Drienikova, and Ludmila Smakova. "INTERDEPENDENCY BETWEEN ECONOMIC PERFORMANCE AND HIV PREVALENCE IN COUNTRIES OF SUB-SAHARAN AFRICA." Ekonomicko-manazerske spektrum 14, no. 2 (2020): 52–62. http://dx.doi.org/10.26552/ems.2020.2.52-62.

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The HIV/AIDS threat, as a development obstacle in the underdeveloped world, has persisted for years. Globally, 37.9 million people are HIV positive and the majority, or 70% of them, live in Sub-Saharan Africa, a region with insufficient resources to fight the infection. HIV infection, if it progresses to AIDS, reduces labor force, decreases productivity, increases costs of health services and thus has a negative impact on a country’s economic performance. The research presented in the paper analyzed HIV prevalence and GDP per capita of all SubSaharan countries, disproving the initial hypothesi

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Tadesse, Kassahun Birhanu, and Megersa Olumana Dinka. "Application of SARIMA model to forecasting monthly flows in Waterval River, South Africa." Journal of Water and Land Development 35, no. 1 (2017): 229–36. http://dx.doi.org/10.1515/jwld-2017-0088.

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AbstractKnowledge of future river flow information is fundamental for development and management of a river system. In this study, Waterval River flow was forecasted by SARIMA model using GRETL statistical software. Mean monthly flows from 1960 to 2016 were used for modelling and forecasting. Different unit root and Mann–Kendall trend analysis proved the stationarity of the observed flow time series. Based on seasonally differenced correlogram characteristics, different SARIMA models were evaluated; their parameters were optimized, and diagnostic check up of forecasts was made using white nois

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Maxwell, Obubu, Ikediuwa Udoka Chinedu, Anabike Charles Ifeanyi, and Nwokike Chukwudike C. "On Modeling Murder Crimes in Nigeria." Scientific Review, no. 58 (August 1, 2018): 157–62. http://dx.doi.org/10.32861/sr.58.157.162.

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This paper examines the modelling and forecasting Murder crimes using Auto-Regressive Integrated Moving Average models (ARIMA). Twenty-nine years data obtained from Nigeria Information Resource Center were used to make predictions. Among the most effective approaches for analyzing time series data is the method propounded by Box and Jenkins, the Autoregressive Integrated Moving Average (ARIMA). The augmented Dickey-Fuller test for unit root was applied to the data set to investigate for Stationarity, the data set was found to be non-stationary hence transformed using first-order differencing t

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ABIJAUDE, JESSICA ALMEIDA, ALINE PATRICIA MANO, WESLEY VIEIRA SILVA, and DIEGO DE CASTRO FETTERMANN. "ANÁLISE DOS INDICADORES DE DESEMPENHO DE UM CENTRO DE DISTRIBUIÇÃO DE BEBIDAS." Engevista 18, no. 1 (2016): 125. http://dx.doi.org/10.22409/engevista.v18i1.705.

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As empresas têm utilizado cada vez mais os indicadores de desempenho como meio de monitorar seus resultados. Conhecer o comportamento dos processos é importante para busca dos resultados operacionais almejados. Sendo assim, este trabalho apresenta um estudo sobre o comportamento de três indicadores de desempenho operacionais utilizados em um Centro de Distribuição Direta e sua contribuição para o desempenho operacional. Os indicadores selecionados foram: percentual de vendas efetuadas aos clientes da base, percentual de devolução e percentual de fora de rota. Partindo da hipótese de que esses

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Rosa, Felipe Calas, Thiago Oliveira Mandu, Marta Cristina Pelucio Grecco, Fabiana Lopes Da Silva, and Maria Thereza Pompa Antunes. "Relação entre o valor adicionado distribuído e a satisfação dos funcionários." Revista Eletrônica do Departamento de Ciências Contábeis & Departamento de Atuária e Métodos Quantitativos (REDECA) 6, no. 2 (2019): 1–20. http://dx.doi.org/10.23925/2446-9513.2019v6i2p1-20.

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As empresas têm buscado melhorar o ambiente organizacional visando promover um melhor clima organizacional e até mesmo o sentimento de felicidade no trabalho, diante disso, este estudo tem como objetivo investigar a relação entre o Valor Adicionado Distribuído aos Empregados (VADE), extraído da Demonstração do Valor Adicionado (DVA), e o Índice de Felicidade no trabalho (IFT), publicado pela Revista Você S/A. A amostra foi constituída a partir da população de empresas listadas pela Revista Você S/A, como as melhores empresas para se trabalhar, foram selecionadas aquelas que tem obrigatoriedade

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Asuamah Yeboah, Samuel. "Modelling inflation-interest rate nexus for Ghana." International Journal of Financial, Accounting, and Management 2, no. 3 (2020): 227–41. http://dx.doi.org/10.35912/ijfam.v2i3.257.

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Purpose: The research assesses the interest rates-inflation association in the case of Ghana between 2007 and 2013. Monthly and quarterly data were used. Research Methodology: The model of the vector error correction and Johansen were used to investigate the long-term and short-term association in the model estimated respectively. The vector autoregression (VAR) test was used to model the joint dynamics between the variables. GRETL software was used in these tests. Granger predictive test was done with the EViews software. Results: The findings of the result confirm both long-run and a short-r

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Kolawole, Oyebamiji A., and Semire Banjo. "In Vitro Biological Estimation of 1,2,3-Triazolo[4,5-d]pyrimidine Derivatives as Anti-breast Cancer Agent: DFT, QSAR and Docking Studies." Current Pharmaceutical Biotechnology 21, no. 1 (2020): 70–78. http://dx.doi.org/10.2174/1389201020666190904163003.

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Background & Objective: Series of synthesized molecular compounds were considered as anti-breast cancer. The molecular descriptors which describe the microbial activities of the studied compounds were calculated using theoretical approach. Methods: The calculated parameters obtained EHOMO (eV), ELUMO (eV), dipole moment (Debye), log P, molecular weight (amu), HBA, HBD, Vol and Ovality were screened. The obtained calculated descriptors were used to develop QSAR model for prediction of experimental inhibition concentration (IC50) using SPSS and Gretl software packages for multiple linear reg

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Rivera Vargas, José Sebastián, María Fernanda Vargas Ramos, Joffre Danny Preciado Ramírez, and Omar Damián Cavero Álvarez. "Las salvaguardias, la recaudación fiscal y las importaciones en Ecuador, año 2013 – 2015." Visionario Digital 2, no. 1 (2018): 38–49. http://dx.doi.org/10.33262/visionariodigital.v2i1.35.

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En el presente documento se analizó el impacto de las salvaguardias en la República del Ecuador con respecto a la Recaudación Fiscal y a las Importaciones tomando los datos de las variables mencionadas según los años 2013 al 2015. Para realizar el análisis se contextualizó varios conceptos relativos al tema central, posteriormente se realizaron tablas y gráficos para interpretar el comportamiento de las variables mencionadas y revisar el efecto de las Salvaguardias en el proceder de la recaudación del Estado y sus importaciones. Además, se realizó un modelo econométrico para observ

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Rivera Vargas, José Sebastián, María Fernanda Vargas Ramos, Fausto Alfredo Mayorga Cabrera, and Patricia Lissette Martínez Vaca. "Análisis del tamaño del gobierno en la economía, perspectiva del consumo y el gasto corriente en el Ecuador 2003 -2013." Visionario Digital 3, no. 1 (2019): 52–66. http://dx.doi.org/10.33262/visionariodigital.v3i1.230.

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El presente trabajo, es un estudio realizado a partir de las variables Tamaño del Gobierno en la economía, gasto público corriente y el consumo de las familias en Ecuador, desde el año 2003 hasta el 2013, con el fin de analizar la incidencia del tamaño del gobierno en la economía en función de las variables anteriormente mencionadas se procedrá a realizar un modelo econométrico usando el software GRETL. Con el fin de conocer si el Estado cumple con ciertos parámetros de descentralización estatal se basará el estudio en normativas vigentes, en especial la ratificación de que la descentral

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Matušíková, Daniela, Tünde Dzurov Vargová, Michal Lukáč, Milena Švedová, and Ján Ganobčík. "Natural heritage analytical study of old beech forests and primeval beech forests as a potential for nature tourism sustainable development." Heritage and Sustainable Development 6, no. 2 (2024): 721–34. https://doi.org/10.37868/hsd.v6i2.767.

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Natural and cultural wealth in the tourism market plays a significant role in tourism development ideally in a sustainable way. The papers´ research evaluates the potential of old beech forests and primeval beech forests in Europe as targets for possible future nature tourism, emphasizing their ecological, aesthetic, and cultural significance. The analysis, which utilizes a combination of qualitative and quantitative methods including the Shapiro-Wilk normality test, Mann-Whitney test, Kruskal-Wallis test, and Spearman correlation coefficient processed through Gretl software, highlights the si

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Silva, Caroline Sueza Cabelo, and Igor Gimenes Cesca. "Estudo da relação da nota de satisfação geral e resultados financeiros em empresas de telecomunicações." Brazilian Journal of Business 5, no. 3 (2023): 1635–48. http://dx.doi.org/10.34140/bjbv5n3-013.

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A contabilidade é uma ciência aplicada, que interpreta a realidade e a registra de modo a fornecer informações úteis em tempo hábil. Para tanto, é necessário considerar os aspectos quantitativos e qualitativos que influenciam um negócio. Considerando isso, foi analisada a relação entre a percepção de valor dos clientes e os resultados financeiros das três empresas mais representativas do setor de Telecomunicações no Brasil, valendo-se de seus resultados financeiros publicados, bem como do registro de Reclamações e da Pesquisa de Satisfação e Qualidade Percebida realizada pela ANATEL - Agência

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Toshalieva, Saodat. "Forecasting the prospects for the development of regional small business." E3S Web of Conferences 449 (2023): 03003. http://dx.doi.org/10.1051/e3sconf/202344903003.

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Small business is an integral part of the region’s economy, and without its participation it is impossible to imagine the development of the region’s economy. Small business, with its mobility and wide coverage, contributes to the sustainable and sustainable development of the region’s economy. The relevance of the topic under study is due to the need to assess the impact of small business activities on regional socio-economic development. The purpose of the study is to analyze on the basis of ionometric modeling the state of future phenomena and processes in the activities of small businesses

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Niraula, Damodar, and Sujita Maharjan. "Impact of Credit Risk and Macroeconomic Variables on the Profitability of Commercial Banks in Nepal." Batuk 10, no. 1 (2024): 16–28. http://dx.doi.org/10.3126/batuk.v10i1.62295.

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This study was conducted to examine the impact of credit risk and macroeconomic variables on the profitability of commercial banks in Nepal. Return on assets and earnings per share of the banks were taken as regrassands. Whereas, as regressors, non-performing loan, capital adequacy ratio and credit to deposit ratio were taken as the proxies of credit risk, and GDP growth rate, consumer price index and base rate were studied as indicators of macroeconomic variables. Following simple random sampling techniques, 14 commercial banks were selected as sample for the study. The required quantitative

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Flores Bañuelos, Miriam Del Consuelo, Sergio Hernández Mejía, and Arturo García Santillán. "Relación entre el marketing digital, las habilidades en internet y las características del negocio: un estudio en mujeres emprendedoras." Contaduría y Administración 69, no. 2 (2023): 448. http://dx.doi.org/10.22201/fca.24488410e.2024.5081.

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<p>El marketing digital y las habilidades en internet son temas de la actualidad digital, por ello, el propósito del estudio se centra en determinar si existe una relación significativa entre el marketing digital y las habilidades de internet en mujeres emprendedoras, además, determinar si correlacionan significativamente con las características del negocio. Participaron mujeres, que residen en Puerto Rico, Venezuela, Argentina y Colombia. Para analizar los datos se utiliza un modelo econométrico para la prueba de hipótesis con el uso del software Gretl. Se comprobó una relación estadíst

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Suraj Bhujel. "Gender Diversity and Firm Performance: Evidence from Co-operative of Chitwan." Nepalese Journal of Management Research 5, no. 1 (2025): 73–77. https://doi.org/10.3126/njmgtres.v5i1.75874.

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This paper examined the relationship between gender diversity and firm performance by taking the evidences from Co-operatives of Chitwan, Nepal. The study adopted descriptive and casual comaparative research design. Secondary data from annual report of the sampled co-operative were used for the analysis. SPSS and Gretl software were used for data analysis. The data of 90 co-operatives were collected from the annual report of the co-operative and Nepal Federation of Savings and Credit Cooperative Unions (NEFSCUN) and saving and Credit Cooperative Society (SACCOS). Based on the resource dependen

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Limones, Salazar A. J., Cornejo M. Gino, Regalado J. O. García, and Zambrano D. Medina. "Subsidio de combustible en la estructura de costos del sector de transportación pública masiva en Ecuador." Revista de Ciencias Sociales (RCS). Facultad de Ciencias Económicas y Sociales. Universidad del Zulia. 29, Número Especial 7 (2023): 405–19. https://doi.org/10.31876/rcs.v29i.40474.

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Los subsidios de combustible se convierten en elemento clave de la economía. El presente trabajo de investigación tuvo como objetivo analizar la incidencia del subsidio al combustible en la estructuración de costos del sector de transporte masivo en Ecuador, el mismo que ha demostrado ser uno de los sectores con mayor dinamismo para la economía del país. La reducción del subsidio al combustible ha provocado en la actualidad, graves problemas para una parte de la sociedad. La metodología que se utilizó fue no experimental con un enfoque cu

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Jędrzejczak, Alina, and Jan Kubacki. "Impact of expenditure on social assistance on household income at the regional level in Poland." Wiadomości Statystyczne. The Polish Statistician 66, no. 1 (2021): 9–31. http://dx.doi.org/10.5604/01.3001.0014.6745.

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The main aim of the paper is a statistical analysis of changes in household income distribution at the regional level in Poland taking into account the impact of government spending on social assistance. Various linear models (incorporating relations for spline functions) and the vector autoregression models (VAR) were used in the research. The linear models formulated for voivodships (NUTS 2) contained a dichotomous variable with values dependent on the existence of social programmes introduced by the Polish government in 2016. An independent variable representing expenditure per capita on so

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Littlefield, Stanley. "Software Reviews : R & R Report Writer." Social Science Microcomputer Review 5, no. 3 (1987): 414–15. http://dx.doi.org/10.1177/089443938700500329.

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Impellizzeri, Alessandra, Maddalena Dilucca, Francesca Squillace, Rosanna Guarnieri, Antonella Polimeni, and Gabriella Galluccio. "Psychological and Physical Distress in Italian People during COVID-19 Pandemic: One Year Later." International Journal of Environmental Research and Public Health 18, no. 23 (2021): 12525. http://dx.doi.org/10.3390/ijerph182312525.

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The aim of this study was to evaluate the major life changes that Italian people experienced after one year of the COVID-19 pandemic. We assessed the psychological and physical impact of COVID-19 within one year of the pandemic situation, and its possible correlation with the positive COVID-19 trend in the Italian region. We invited Italian people to complete a cross-sectional, online survey within a three-week period from 14 March to 4 April 2021. The survey collected data on the participants’ stress and physical levels, attitude, perceived control, norms, personal and professional background

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López Rivero, Alfonso José, Carlos Andrés Martínez Alayón, Roberto Ferro, Daniel Hernández de la Iglesia, and Vidal Alonso Secades. "Network Traffic Modeling in a Wi-Fi System with Intelligent Soil Moisture Sensors (WSN) Using IoT Applications for Potato Crops and ARIMA and SARIMA Time Series." Applied Sciences 10, no. 21 (2020): 7702. http://dx.doi.org/10.3390/app10217702.

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This article presents the results obtained by analyzing the data traffic that originated in a system with intelligent soil moisture sensors (Wireless Sensor Network—WSN) that transmit through a wireless network. This study sought to integrate smart agriculture and IoT (Internet of Things) applications in potato crops in various rural settings. Using these measurements, the data analysis was performed through the ARIMA (autoregressive integrated moving average model) and SARIMA (seasonal autoregressive integrated moving average model) time series following the Box–Jenkins methodology. GRETL (Gn

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Rodriguez Sena Diego, Eduardo Rafael. "Marginal propensity to save from workers of a commercialization and distribution business of mass products in Ciudad Del Este, Paraguay." Sociology International Journal 7, no. 6 (2023): 315–19. http://dx.doi.org/10.15406/sij.2023.07.00365.

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Background: Keynes was the first economist to state that consumption depends fundamentally on income. Savings is equal to income minus consumption. Objective: To determine the behavior of the savings function of the workers of a company that distributes mass consumption products in Ciudad Del Este. Method: The sample (191) was calculated according to the population. The approach is a mixed, descriptive study, using surveys, based on a non- experimental and correlational design. For the analysis, the Dispersion Diagram, Pearson's Coefficient and Simple Linear Regression by the Ordinary Least Sq

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Iovu, Cristina. "The Financial Impact and Techno-economic Assessment of Bioplastics Based on Their Properties." Materiale Plastice 60, no. 3 (2023): 73–83. http://dx.doi.org/10.37358/mp.23.3.5677.

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This study has proved the value of the bioplastics in replacing the classical polymers used for various applications by employing a new and original econometric model which underlines the interdependence between the bioplastics price and the following mechanical properties: Young modulus, Tensile strength and Elongation at break. The model was applied for 5 different bioplastics: polylactic acid (PLA), cellulose acetate (CA), poly (butylene succinate) (PBS), Bio-polyethylene (Bio-PE) and Bio-polyethylene terephthalate (Bio-PET). The biopolymers cover a large range of bioplastics both biodegrad

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TASHNICHENKO, V. O., and I. V. TREGUB. "ECONOMETRIC ANALYSIS OF THE DEVELOPMENT OF SMALL AND MEDIUM-SIZED ENTERPRISES IN THE FIELD OF INNOVATION AND INNOVATIVE TECHNOLOGIES OF THE RUSSIAN FEDERATION." Economic Problems and Legal Practice 20, no. 2 (2024): 211–15. http://dx.doi.org/10.33693/2541-8025-2024-20-2-211-215.

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This article represents a study of the dynamics of the development of the number of small and medium-sized enterprises (SMEs) actively involved in the sphere of innovations and innovative technologies in the Russian Federation over the past decade from 2013 to 2023. Using comprehensive analysis of available data, through econometric modeling in the Gretl software environment, including governmental statistical reports, industry reviews, and scientific research, this study focuses on the evolution and dynamics of SMEs' development in this key sector, as well as on the factors influencing change

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Talakh, Nataliia Dmitrievna. "SIMULATION MODEL OF DEVELOPMENT OF INVESTMENT AND INNOVATION ACTIVITY OF ORGANIZATIONS IN CROP AND LIVESTOCK FARMING." Экономика сельского хозяйства России, no. 4 (April 1, 2025): 130–37. https://doi.org/10.32651/254-130.

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Agriculture is one of the key sectors of the economy, ensuring food security, job creation, and sustainable regional development. In the face of globalization, climate change and growing demand for food, organizations in crop and livestock production are faced with the need to adopt innovative technologies and increase investment attractiveness. The design of simulation models facilitates accelerated adaptation to the constantly changing conditions of the country's economic system. This study highlights the significance and advantages of simulation modeling as a tool for agriculture. An adapte

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López, Rivero Alfonso José, Alayón Carlos Andrés Martínez, Roberto Ferro, de la Iglesia Daniel Hernández, and Secades Vidal Alonso. "Network Traffic Modeling in a Wi-Fi System with Intelligent Soil Moisture Sensors (WSN) Using IoT Applications for Potato Crops and ARIMA and SARIMA Time Series." Applied Sciences 10, no. 21 (2020): 7702. https://doi.org/10.3390/app10217702.

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This article presents the results obtained by analyzing the data traffic that originated in a system with intelligent soil moisture sensors (Wireless Sensor Network—WSN) that transmit through a wireless network. This study sought to integrate smart agriculture and IoT (Internet of Things) applications in potato crops in various rural settings. Using these measurements, the data analysis was performed through the ARIMA (autoregressive integrated moving average model) and SARIMA (seasonal autoregressive integrated moving average model) time series following the Box–Jenkins methodolog

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Irie, Go, and Takashi Satou. "R; a statistical analysis software." Journal of The Institute of Image Information and Television Engineers 63, no. 11 (2010): 1540–43. http://dx.doi.org/10.3169/itej.63.1540.

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Kroeker, K. L. "Software [R]evolution: A Roundtable." Computer 32, no. 5 (1999): 48–49. http://dx.doi.org/10.1109/mc.1999.762792.

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SUNGATULLINA, Liliya B., and Il'mira R. BADGUTDINOVA. "A prospective analysis of the financial responsibility of debtors in the information environment." International Accounting 22, no. 1 (2021): 72–93. http://dx.doi.org/10.24891/ia.24.1.72.

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Subject. This article deals with the issues of receivables management on the basis of a prospective assessment of the financial solvency of potential counterparties. Objectives. The article aims to develop methodological approaches to the management of receivables when checking the counterparty for reliability by identifying the existence of a statistically significant relationship between the quick liquidity ratio and impact factors. Methods. For the study, we used the methods of analysis and synthesis, generalization and comparison, logical and systemic reasoning, and stochastic analysis. Re

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Franklin Sam, Oslund Rains. "Un análisis de la producción y el desempleo en Nicaragua 1980-2014." Ciencia e Interculturalidad 22, no. 1 (2018): 137–45. http://dx.doi.org/10.5377/rci.v22i1.6562.

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En este artículo, se han expuesto las tres especificaciones empíricas desarrollados por Arthur Okun (Okun, 1962), economista norteamericano, quien estableció la relación entre crecimiento productivo y desempleo de Estados Unidos a partir de los datos recogidos durante los años 50. La metodología es cuantitativa al partir de la ecuación primeras diferencias, para estimar la relación empírica entre producción y empleo, utilizando datos desde la década de los 80 hasta el 2014 con frecuencia anual publicados por el Banco Central de Nicaragua, pero teniendo en cuenta que hubo cambios en

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Izquierdo García, Daniel, Marcelo Enrique Reina Tello, Ernesto Gutierrez Vallejo, and Gustavo Dario Robles Quiñonez. "La inversión extranjera directa y su incidencia en el crecimiento económico de los países latinoamericanos 2015 - 2016." Ciencia Digital 2, no. 1 (2018): 319–30. http://dx.doi.org/10.33262/cienciadigital.v2i1.23.

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Actualmente uno de los factores más importantes en una economía globalizada de libre entrada y salida de capitales es la inversión extranjera. Por otra parte, la búsqueda de un crecimiento sostenido de las economías Latinoamericanas se ha convertido en un reto para los gobiernos. Razón por la cual el presente trabajo de investigación analiza “La inversión extranjera directa y su incidencia en el crecimiento económico de los países Latinoamericanos 2015 -2016”. Se detallan además los aspectos positivos y retos que se deben afrontar en la búsqueda de la inversión extranjera. El aporte principal

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