01. Universidade Federal Rural de Pernambuco - UFRPE (Sede)
URI permanente desta comunidadehttps://arandu.ufrpe.br/handle/123456789/1
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Item Redes ópticas de acesso: uma análise comparativa entre EPON e SuperPON(2024-12-12) Silva, Marcos Antonio da; Araújo, Danilo Ricardo Barbosa de; http://lattes.cnpq.br/2708354422178489The demand for high transmission rates for Internet services has been increasing over time, resulting in a large flow of data. This project focuses on access networks, which provide quality intemet services to homes and small business. Optical fiber offers high transmission rates, both for upstream and downstream, capable of transporting several Gbps, depending on the network architecture and equipment used, such as the OLT (Optical Line Terminal). Passive optical networks are access networks that use interconnected optical fibers in a star topology and point-to-multipoint configuration, consisting only of passive optical components between the Optical Line Terminal (OLT) and the Optical Network Unit (ONU). As a technological evolution strategy, they can be used to leverage the installed base of copper cables and coaxial cables in the access network, serving as feeder cables for technologies such as Digital Subscriber Line (DSL), cable modem, and Local Multipoint Distribution System (LMDS), and, in the future, to provide optical fiber to user premises. This project aims to show the difference between EPON and SuperPON technologies, both of which are passive network technologies, and to verify the cost-effectiveness of both. In this work, we explore the particularities of both technologies, considering the size of the network. We observe that EPON (Ethernet Passive Optical Network) stands out for its significantly lower cost compared to SuperPON when expanding the network to smaller areas. This is due to the lower need for expenses with CO (Central Office) and equipment. On the other hand, SuperPON presents a cost advantage when expanding to larger areas, as it requires less CO. Therefore, it becomes a more advantageous option compared to EPON in such network expansion scenarios. Another comparison we will address is the number of ONUs (Optical Network Unit) that we can obtain compared to EPON and SuperPON. In EPON, one fiber can support up to 64 ONUs in a network with a 1:8 splitter, resulting in 8 CTOs (Optical Termination Boxes). In a network with a 1:16 splitter, we can have 4 CTOs. On the other hand, in the SuperPON network, we can accommodate up to 1024 ONUS on a single fiber with a 1:8 splitter, resulting in 128 CTOs. With a 1:16 splitter, we can have 64 CTOs.Item Análise dos acidentes de trabalho no setor da construção no Brasil - 2010 a 2019(2024-02-27) Lima, Victor Hugo Silva de; Abreu, Eliane Aparecida Pereira de; http://lattes.cnpq.br/3101422198167935; http://lattes.cnpq.br/2650245925207872The construction sector is one of the segments that records the highest number of work accidents in Brazil. Accidents in this industry are characterized by being more serious and fatal, leading to permanent disabilities and worker fatalities. These events have a high cost for both the companies involved and for society. Therefore, the purpose of this work is to carry out an analysis of the costs of work accidents and their economic implications in the construction sector, emphasizing the relevance of implementing preventive measures of occupational safety in the sector. For this, information provided by the Ministry of Labor and Employment (MTE), Ministry of Social Security (MPS) and the Brazilian Chamber of the Construction Industry (CBIC) was collected, considering the period from 2010 to 2019, carrying out a descriptive analysis of these data and estimating the costs of accidents for the construction sector. In the examined period, there were 382,685 work accidents in the Construction sector, involving workers insured by Social Security. From the analysis of the data, it was observed that these accidents are of typical nature, presenting a drastic decline in the indicator of total work incidence in 2013 to 2015, however with the proportional accident rate in the age group of 16 to 34 unstable, sometimes increasing, sometimes decreasing. Regarding the lethality of accidents, growths were verified throughout the series and above the national rate, but the mortality indicator declining over time. Considering the expenses with accidents, the accident benefits granted by INSS totaled approximately 4.2 billion reais, with an annual average of 423 million reais. Already in the private sector, the private costs of work accidents were estimated at 2.1 billion reais, equivalent to an annual average of 212 million reais. The charges from work accidents to companies represent only a fraction of the total costs imposed on society. In this context, there is room for more comprehensive interventions by public authorities such as inspections, implementation of legislation, informative safety campaigns, among other actions, aiming to reduce the occurrence of work accidents and their repercussions. It is worth noting that these data only include work accidents involving formal workers with registration in INSS, disregarding the informal side and possible underreporting, which leads to the belief that the number of accidents may be greater than those disclosed by Social Security.Item Gestão de estoque e custo de mercadoria vendida em bar de restaurante pernambucano(2023-09-22) Santos, Júlia Cassiane Albuquerque; Arruda, Luciana Leite de Andrade Lima; http://lattes.cnpq.br/6140791519234633; http://lattes.cnpq.br/1912578257410635Item Levantamento técnico econômico de uma treliça de madeira na Região Metropolitana do Recife - PE(2020-11-04) Santos, Layanne da Silva; Braz, Rafael Leite; http://lattes.cnpq.br/7332493832361305; http://lattes.cnpq.br/4994766050280974Wood is a material suitable for use in structures due to its properties and reduced energy needed to prepare them. The truss system is the most used for roofs and bridges, presenting lower cost and agility in execution without impairing efficiency structure. The use of prefabricated wood pieces is a resolutive option in civil construction, is essential for sustainable development, and is a more economical system. Therefore, this study aims to carry out a technical and economic survey of a company having as its main product the truss according to the norms NBR 7190 (1997), providing the optimization of the use of maçaranduba wood and mixed wood from the timber market in the metropolitan region of Recife - PE. Samples of maçaranduba wood and those called as mixed were collected at the local market in the city of Recife-PE. Each wood had its moisture content and apparent density calculated to classify its resistance, according to NBR 7190 (1997). The gable Howe trusses' design was taken into account, using the local market as a basis for determining the sections of the parts and subsequent budget, including labor per production step. After calculations, the amount of wood volume required for the roof structure was obtained, and due to their lower resistance, mixed wood structures require a larger volume of wood. Regarding the economic survey, based on the local market, the mixed wood structure obtained a production cost of 5,5% more than that of maçaranduba, despite the lower cost of the sawn wood unit, due to the higher volume of wood needed and connecting elements. Finally, due to the lack of a significant number of companies operating in the sector, the scenario for the prefabricated market in the region is favorable for entrepreneurs looking for a market with good development chances.Item Precificação de serviços educacionais: diretrizes gerais adotadas e oportunidades de aperfeiçoamento na precificação em uma instituição de ensino profissional e tecnológico(2021-12-17) Moreira, Camilla Gonzaga; Maia Filho, Luiz Flávio Arreguy; http://lattes.cnpq.br/2508376486299377This study has as its main focus the pricing methods of educational services in the pricing of technical courses. The general objective is to identify which are the main methods adopted in the pricing of educational services, more specifically technical courses, in a technical education institution in the state of Pernambuco, as well as to consider possible opportunities for improvement. To this end, the following specific objectives were defined: to rescue authors and theories relevant to the context of pricing of educational services, gather data and information considered in the analysis of the cost structure for price formation of a line of services (technical courses) offered by the studied institution, understand, in general, how the institution converts the relevant information into prices effectively practiced and perform a sustainability analysis of the method used by the institution. Addressing the pricing methods of educational services in the pricing of technical courses is justified by its relevance in the face of an increase in the search for financial sustainability of educational organizations in the post-pandemic recovery economy. The methodology used has a bibliographic character, with the study and comparison of the works of different authors for further deepening on the theme, besides the documental analysis of exploratory nature. With results treated qualitatively, from the collection of information in secondary and primary sources, with data provided by a private educational institution - with due research authorization, the simulation was performed, increasing the number of participants per class and keeping the fixed costs, it was identified in the results that increasing the standard amount of participants from 25 to 28 would bring more efficient results and growth in the operating result, around 5 percentage points. With the gathering of information throughout the research and data analysis, it was possible to conclude that the theoretical pricing methods are positive in the formation of prices for educational services, helping the institution, in obtaining well-defined costs and in the view of the previous result.