http://repositorio.ufgd.edu.br/jspui/handle/prefix/127 2026-04-15T17:42:17Z http://repositorio.ufgd.edu.br/jspui/handle/prefix/6710 Título: Viabilidade econômica e ambiental para a implantação de uma unidade armazenadora de grãos Autor(es): Rodrigues, Thais Ribeiro Primeiro Orientador: Motomiya, Anamari Viegas de Araujo Abstract: The economic and environmental analysis are essential to ensure soundness in the decision-making process for investment, providing both profitability and sustainability. The integration of these perceptions allows identifying the potential financial return, while considering environmental impacts, promoting more responsible choices aligned with the principles of sustainable development. Given this context, the objective of this study is to analyze the economic, financial, and environmental feasibility of the process of implementing a Grain Storage Unit on a rural property in the region of Nioaque in Mato Grosso do Sul. To this end, some financial indicators were applied to evaluate the investment: Net Present Value (NPV), Minimum Attractiveness Rate (MAR), Internal Rate of Return (IRR), and Payback Time. After the financial analysis, the environmental feasibility of the project was assessed using the impact assessment method in the different phases of the project (planning, implementation and operation), considering the significant impacts generated in the physical, biotic and socioeconomic environments. The results of the indicators showed that, when considering a MARR of 13.75%, an NPV of US$ 7.340.283,45 and an IRR of 58,76% were obtained, for a payback of 2 years and 1 month. For the three proposed revenue variations, only the -20% variation proved to be economically unfeasible. The others (-10% and -15%) indicated economic viability and pointed to the robustness of the project. The analysis of the valuation matrix classified the negative impacts of the project as weak (-11) and the positive ones were evaluated as moderate (16). Overall, the results confirmed the economic-financial and environmental feasibility of the project, indicating that it can be safely implemented. Editor: Universidade Federal da Grande Dourados Tipo: Dissertação 2025-07-04T00:00:00Z http://repositorio.ufgd.edu.br/jspui/handle/prefix/6672 Título: Modelo multicritério utilizando-se Lógica Fuzzy como ferramenta de análise de viabilidade e tomada de decisão em obras rodoviárias Autor(es): Silva, Guth Halley Nogueira Primeiro Orientador: Geisenhoff, Luciano Oliveira Abstract: With the globalization of the economy in recent decades, investment in transportation infrastructure has been the subject of study due to its important role and high added value. In Brazil, the road transport mode stands out among others and its direct influence on the entire cost of the production chain is constantly analyzed in order to achieve higher quality and lower cost. Thus, this study aimed to propose a multicriteria model to assist in decision-making regarding construction processes of infrastructure works, specifically in the road sector. For this, Fuzzy Logic was used, building a simulation model, where the input variables are the quantity of factors that add cost to the road, the complexity caused by the length of the section to be built, and the levels of environmental thermal stress to which the workers are subjected during the execution of the work. The output variable is the economic viability of the project provided by the combination of linguistic terms of input. Through literature review and expert experience, consistent methodologies were employed to support decisions in the model testing stage, in order to have a real system that optimizes available resources and maximizes project value. For the construction of the activated rule base, 45 rules were generated using the propositions AND, IF, and THEN, interacted by the Mandani method. After the construction of the model, information from twenty road projects of the DNIT was used in the test, with the return being verified consistent with the documented real information. The results showed the following: 1) HDI plays a significant role in the viability of the work in different environmental contexts: sections with critical lengths are susceptible to safety problems and increased operational costs, and sections with intermediate length in transition should be analyzed in conjunction with other variables; 2) HDI, alone, does not exert a significant influence on Viability when up to 5.5 criteria are met; however, if around 8 criteria are met in the project, the HDI becomes a high-impact factor on viability, because if it is in the comfort region, the viability is considered ideal, and if it is in the stress regions due to heat or cold, it returns a normal viability of the road project; 3) there are direct relationships between Section-Length and Criteria-Met when they are in the "Poor" range, which means that the Economic Viability of the project is well below ideal, at approximately 9%; 4) when the Section Length is classified as "Ideal" and the Criteria Met are at the "Good" level, Economic Viability reaches the highest level of 92.4%, indicating a very profitable project condition; and 5) Considering fuzzy simulations that encompassed the three input variables in different scenarios, with optimal and extreme values, the results obtained demonstrated coherence with the output variable, Economic Viability. After calibrating the model, a simulator with a high degree of precision was obtained by redoing real situations including their limitations, which can be used as a support tool in management and decision-making, aiming to minimize costs and seek constructive quality of highways. Editor: Universidade Federal da Grande Dourados Tipo: Dissertação 2023-08-03T00:00:00Z http://repositorio.ufgd.edu.br/jspui/handle/prefix/2566 Título: Desenvolvimento de dispositivo para monitoramento e controle de atuadores em ambientes agrícolas Autor(es): Battilani, Mauricio Primeiro Orientador: Santos, Rodrigo Couto Abstract: Environmental factors such as temperature and humidity influence animal production, they should be monitored as accurately as possible to avoid making decisions based on distorted data, so the best way to collect data is locally, but costs collection of environmental control and collection systems can be a deterrent to small producers. The aim of this work was the validation of temperature and relative humidity sensors and low cost light sensor, use of datalogger and drive of actuators as a way to improve environmental conditions. The validation of the Temperature, Relative Humidity and Luminosity sensors was made with calibrated sensors and attested by INMETRO using the student t test for statistical analysis at 5% probability. The experiment was performed in Dourados - MS, at Campus II of the Federal University of Grande Dourados - UFGD in 2018. For quantitative and qualitative analysis of thermal comfort, Entalpia (kJ / kg dry air) was used and based on the qualitative analysis of comfort the actuators were triggered whenever necessary. With this study it was possible to construct a low cost equipment compared to the national commercially available brands. The embedded transducer proved to be effective in collecting and actuating actuators, and the use of datalogger aggregates values ​​when used in searches for its capacity and the reduced interval between data collections.; Fattori ambientali come temperatura e umidità influenza sulla produzione animale, questi devono essere controllati con la massima precisione possibile, in modo da evitare di prendere decisioni sulla base di dati distorti, quindi il modo migliore di raccolta dei dati è in loco, ma i costi la raccolta di sistemi di controllo ambientale e raccolta può essere un deterrente per i piccoli produttori. Questo studio ha lo scopo di validare trasduttori di temperatura e umidità relativa, sensore di luce a basso costo, l'uso di data logger e attuatori di azionamento come un modo per migliorare le condizioni ambientali. La validazione dei sensori di temperatura, umidità e luminosità relativa è stata fatta con sensori calibrati ed eguagliando certificati INMETRO utilizzando il test t di Student per l'analisi statistica a 5% di probabilità. L'esperimento è stato condotto in Dourados - MS Campus II dell'Università Federale di Grande Dourados - UFGD 2018. Per l'analisi quantitativa e qualitativa dei comfort termico è stato utilizzato dell'Entalpia (kJ / kg di aria secca) e sulla base delle analisi qualitativa del benessere gli attuatori sono stati attivati ​​quando necessario. Questo studio è stato possibile costruire un apparecchio a basso costo rispetto alle marche nazionali commercialmente disponibili sul mercato. Il sistema embedded trasduttore è rivelata efficace per la raccolta e l'azionamento degli attuatori, e l'uso di datalogger aggiunge valore quando utilizzato nella ricerca per la loro capacità e l'intervallo ridotto tra raccolte dati. Editor: Universidade Federal da Grande Dourados Tipo: Dissertação 2018-09-17T00:00:00Z http://repositorio.ufgd.edu.br/jspui/handle/prefix/1561 Título: Sistemas de manejo do solo e velocidade de semeadura da soja Autor(es): Chaves, Rodrigo Gonçalves Primeiro Orientador: Cortez, Jorge Wilson Abstract: The increase in soybean yield is related to several operational factors, as soil tillage and sowing speed. Like this, this study aimed to evaluate the soil tillage and sowing rate on soybean, and their effects on the agronomic and physical soil properties and the performance of the whole tractor-seeder. The randomized block design in split plot design with four replications was used. The treatments consisted of six management systems, Applied to the plots: no tillage (PD), subsoiling no tillage (PDs), no tillage subsoiling crusader (PDsc), conventional tillage (PC), reduced tillage (PR) and conservation tillage (PCs). And the forward speed applied to the split plot at the time of soybean seeding, resulting in average speeds 4.6; 5.5; 7.3 and 7.8 km h-1. It was observed in the layers 0.0 – 0.10; 0.10 – 0.20 e 0.20 – 0.30 m significant effect of tillage systems on penetration resistance (RP) soil. The PD system had the highest PR value compared to other tillage systems studied. The speed of 7.3 km h-1 was optimal for the sowing field by having a yield of 94.03%. The speed of 7.8 km h-1 gave the least amount of gaps in the double row sowing. Low speeds favor higher productivity, to improve other agronomic traits, such as pods per plant and plant stand. Editor: Universidade Federal da Grande Dourados Tipo: Dissertação 2015-02-25T00:00:00Z