Julio Cezar Mairesse Siluk's research while affiliated with Universidade Federal de Santa Maria and other places
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Publications (61)
This article maps and verifies the dependence relation between risks faced by startup investors. Thus, a systematic review of 33 articles and a meta-analysis using the Apriori algorithm were used. We mapped 14 investment risks faced by startup investors, classifying them into four dimensions: external, internal, human, and capital. Furthermore, by...
Companies that develop and provide electricity services play a crucial role in society’s economic growth and quality of life. As such, value creation has shifted from tangible to intangible resources, which serve as a source of competitive advantage and value for organizations. However, energy companies typically focus more on their physical and te...
In its nature, a startup is dependent on an innovation ecosystem. The innovation ecosystem, as well as the interactions that a startup maintains, aims to create new products, gain access to specific resources, and promote partnerships with other startups and organizations. The innovation ecosystem’s importance for a startup’s success is recognized...
Civil construction projects must be evaluated to guarantee maximum
assertiveness. The objective of the study was to determine the best company for
the execution of a condominium expansion project, using multicriteria methods
to assist in the decision-making of a condominium administrator. The analytical
hierarchy process (AHP) was used to define th...
This article diagnoses the competitiveness of the Brazilian value chain of photovoltaic (PV) distributed generation and identifies challenges and strategies to overcome them and strengthen the market. Literature analysis and interviews were conducted with 87 professionals from all value chain links. Results show that the competitiveness of the Braz...
Battery Electric Vehicles (BEVs), Hybrid Electric Vehicles (HEVs) and Fuel Cell Vehicles (FCEVs) are potential alternatives to replacing the Internal Combustion Engine Vehicles (ICEVs). However, these new possibilities, that aim to make mobility more sustainable, still lack greater research and development to boost their competitiveness and achieve...
Understanding the stages of the life cycle of companies is fundamental to their management and performance, since the characteristics of companies vary according to the moment they are going through. With this focus, the purpose of this article is to identify and analyze the models of the different company cycles found in the literature presenting...
In Brazil, the accelerated growth of solar photovoltaic energy through Distributed Generation (DG) conducts National Electric Energy Agency (ANEEL) to revise the Electric Energy Compensation System to balance the electricity grid costs DG participants and non-participants. For this, ANEEL proposed five Alternatives with the entry of grid electricit...
The electricity sector is undergoing an epochal transformation from the bulk grid to the distributed generation and storage model, and photovoltaics is one of the leading technologies used in this transformation worldwide. In several countries, laws that permit electricity consumers to connect generation systems to the distribution grid were publis...
Defining the algorithm capable of best fit the characteristics observed for a problem is a complex task in the context of combinatorial optimization problems. As a decision-making process, one of the most practical and useful ways to treat and solve algorithm selection problems is using supervised machine learning techniques to search for patterns...
Nos últimos anos, a geração de energia fotovoltaica (FV) foi consolidada no mundo como uma das formas mais promissoras de geração de energia elétrica renovável, contribuindo para a preservação do meio ambiente, já que diminui a utilização das usinas termelétricas, emissoras de gases causadores do efeito estufa. Devido à sua vasta área terrestre e l...
This research presents a systematized literature review to identify the main critical
success factors (CSFs) that influence startups’ competitiveness. Considering that aspects related to competitiveness should be the target of organizations, especially early-stage companies, this paper identifies a broad of factors regarding startups’ competitivene...
This paper aims to present the evolution of the start-up investment modalities through the most covered topics in the scientific literature. A bibliometric review is developed based on 1,984 articles published in the Scopus database. VOSviewer and SciMAT science mapping tools were utilised for this purpose. The analysis identified that in periods f...
Electricity trading occurs under different mechanisms in each country, with auctions being one of these mechanisms. Auctions are widely used to determine their remuneration in the scope of clean energy technologies, such as photovoltaics. Added to the auction process’s bureaucracies and uncertainties, the competing photovoltaic project must keep it...
High level of efficiency is pursued whenever an energy convertion system is operated, such as steam generators, but emission contents must be kept within legal and reasonable values at the same time. The interdependence of these two factors often limit the system performance, and optimization procedures allow for finding combinations of parameters...
Purpose: The purpose of this paper is to evaluate the entrepreneurial behavior of managers of technology-based companies in specific stages of the business life cycle. Design/methodology: Structured questionnaire based on the entrepreneurial behavior characteristics was applied to the thirty-one managers of the technology-based companies mapped for...
Resumo As empresas de base tecnológica do setor de energia se destacam pelas suas características inovadoras e pela produção de um bem de extrema importância para a sociedade, a energia. Dentro dessas companhias existem os ativos intangíveis, que são cada vez mais reconhecidos por exercerem grande influência na organização de qualquer tipo de indús...
Purpose: The purpose of this paper is to evaluate the entrepreneurial behavior of managers of technology-based companies in specific stages of the business life cycle.
Design/methodology/approach: Structured questionnaire based on the entrepreneurial behavior characteristics was applied to the thirty-one managers of the technology-based companies...
The Energy Cloud (EC) is an emerging theme that has emerged as an option to the issues of managing energy supply and demand, since it makes use of tools that streamline this process, such as cloud computing, data processing, and smart devices. Efforts need to be focused on the regulation of this energy management model and understanding what affect...
Electricity consumption in Brazil increases significantly, making feasibility studies to diversify the Brazilian electricity mix with other renewable sources become essential. However, the electricity market continues to be primarily driven by government or regulatory incentives and economic status. With the coronavirus pandemic since the beginning...
Energy Cloud (EC) is the future proposal for energy management but the point is that there is no regulatory framework for EC. Therefore, knowing how the energy regulatory environment works and the relationship between actors and processes in this environment will contribute to the proposition of a new, well-structured regulatory system. The objecti...
The number of large photovoltaic (PV) power plants is increasing around the world. Energy sale usually follows demand contracts with clearly defined obligations, subject to nonsupply penalties. Not supplying the amount of contracted energy is a critical issue to PV plant performance, which can be mitigated with operation and maintenance (O&M) good...
The systems for recovering energy from biogas in landfills represent a solution for solid waste treatment and the growing demand for renewable energy. However, landfill biogas recovery in Brazil is not efficient considering that the impact of the operational factors is unknown. To cope with this problem, this study presents a model to measure the i...
Electricity generation through photovoltaic technology is the fastest growing in the world. Due to its linear power growth characteristic, small-scale generation on grid is common in several countries. In Brazil, in the context of this study, the small-scale solar PV exponentially grows since the implementation of the Distributed Generation market...
The performance measurement models help in decision making,
reflecting the organisation’s strategy in a set of measures capable of measuring its performance. In this scenario, the present work aims to propose a case study for a critical assessment of current indicators and improvements by incorporating literature concepts on the customers’ satisfac...
The purpose of this paper is to measure the impact of market development indicators on company performance, according to the perception of decision-making agents in two non-alcoholic beverages companies. The paper was developed according to the application of two research instruments aimed at experts and decision-making agents in the market develop...
Considering that planet earth's resources are limited, especially when considering its multiple demands of use, it becomes important to identify the most suitable locations for the installation of wind turbines. In this article, the wind resource is analyzed from the perspective of restrictive, economic, environmental, and social aspects that must...
The wide insertion of renewable energies from distributed sources, electric vehicles, energy storage systems, and the massive use of technologies such as Cloud Computing (CC), Big Data, and the Internet of Things, contributed to the development of energy management in CC environments. This way concerns are raised regarding performance objectives, w...
Paper aims: This article aims to diagnose the penetration level of Industry 4.0 technologies in cloud-based energy management systems, the Energy Cloud.
Originality: The energy sector is undergoing a technological evolution driven by the integration of Industry 4.0 technologies with energy management systems, making relevant the study of the permea...
Over the years, methods and algorithms have been extensively studied to solve variations of the rectangular two-dimensional strip packing problem (2D-SPP), in which small rectangles must be packed inside a larger object denominated as a strip, while minimizing the space necessary to pack all rectangles. In the rectangular 2D-SPP, constraints are us...
Energy efficiency has received attention in recent years due to increased demand for electricity. Thus, consuming less energy to manufacture the same amount of products is essential for maintaining the productive activities of society. This research aimed to identify the factors that influence energy efficiency in factories. For this, a systematic...
A energia solar fotovoltaica desempenha um papel importante na evolução da participação de fontes alternativas na matriz energética mundial. Embora a energia fotovoltaica apresente diversas vantagens, considerando a oportunidade de agregar mais escala aos empreendimentos, a viabilização e atratividade do projeto dependem diretamente do local defini...
Abstract Paper aims To identify factors to measure the cooperation between an agro-industrial pork slaughterhouse cooperative and input suppliers. Originality A performance measurement tool applicable in real-life industry practices related to input suppliers, based on critical success factors. Research method The performance measurement tool was c...
O Brasil possui um dos maiores sistemas de transmissão do mundo. Dentro deste sistema, os transformadores de potência correspondem a cerca de 60% do custo total das subestações de alta tensão. Neste contexto, este artigo tem como objetivo propor uma metodologia para analisar os custos da indisponibilidade desses transformadores de potência devido a...
O setor de energia solar fotovoltaica no Brasil está em uma trajetória de busca por informações técnicas e comerciais para fornecer dados aos envolvidos, a fim de orientar uma tomada de decisão mais assertiva. Diante disso, este artigo tem como objetivo fomentar o cenário da energia solar fotovoltaica no Brasil através da metodologia de uma platafo...
A geração de energia elétrica de maneira centralizada, até hoje ainda majoritária em alguns países, enfrenta uma concorrente a altura: a geração descentralizada, ou geração distribuída, que preza pelas energias renováveis alternativas e redes inteligentes (smart grids). O objetivo deste artigo é apresentar um recorte temporal das atividades científ...
Esse estudo exploratório e descritivo objetivou mensurar o comportamento empreendedor de gestores na fase inicial do ciclo organizacional em startups incubadas, enfatizando que o resultado pode ser norteador de competitividade. Com base em uma pesquisa teórica-empírica fundamentada no indivíduo empreendedor, os dados de abordagem quantitativa foram...
The 100-years-old model of centralized generation and one-way power flow is being disrupted by alternative energy technologies that enable customers to generate their own electricity. The massification of distributed generation (DG) started lately in Brazil, but it growth fast in capacity since then. The electric utilities have presented technical...
La economía popular y solidaria en Ecuador se compone tanto por las instituciones financieras cooperativistas, quienes arriesgan sus capitales, así como por los sujetos de crédito, que en su mayoría no poseen una cultura financiera que les permita mantener una capacidad de pago adecuado; esto deviene en la necesidad que presentan las IFs en lo refe...
Startups are innovative companies that live in uncertain environments. This research aims to characterize the conditions and variables that influence the development of startups in the context of the Brazilian economy, so that understanding is reached about the characteristics of their businesses and how the environment acts on them. An evaluation...
p>Os resíduos gerados pela construção civil podem ser reutilizados na forma de agregado reciclado, sendo empregados em diversas situações. Dessa forma, existem diferentes opções de agregado reciclado que podem ser produzidas. Assim, o presente estudo objetivou utilizar a método Fuzzy TOPSIS para determinar a melhor alternativa para a reciclagem dos...
Citations
... Trade agreements often facilitate the access of conventional agricultural products to foreign markets by removing barriers such as tariffs and quotas (Cardwell and Biden, 2023). For largescale agricultural producers in countries such as the United States, Brazil, or Australia, this can mean expanded sales opportunities in places where there is high demand but insufficient local supply (Garlet et al., 2023). ...
... Furthermore, the problem is considered an open-dimensional problem in which a Cartesian coordinate system is used as a reference for the cutting plane of rectangular items, also called the rectangular twodimensional strip packing problem (2D-SPP). The main objective is to minimize the height (or length) or maximize the area used to pack all small items (rectangles) in the strip (sheet metal), without overlapping [3][4][5][6]. A packing layout can be found manually, using algorithms based on heuristics [7][8][9][10][11] to obtain good quality alternative solutions or exact methods [12][13][14] to find the optimal solution with optimality proved. ...
... Additionally, solar energy is utilized using two important technologies: photovoltaic and thermal solar [6]. Photovoltaic technology directly converts solar radiation into electricity through semiconductor cells [7]. For solar thermal technology, solar energy is collected by a solar concentrator and transformed into useful energy that allows vapor generation [8]. ...
... Patents can not only provide a competitive advantage; they are also a measure of technological progress. The collection of patents in a particular field of technology is part of the accumulated knowledge of that discipline of science and technology [58]. As a tool for the assessment of innovation potential in the shipping industry, patent analysis has been discussed in the literature, although its use for this purpose is rare, perhaps due to the prevailing view of the shipping industry as technically conservative [59]. ...
... A total of 23 articles (69.7%) were published from 2000 onwards as a consequence of the internet bubble burst, which caused an increase in investor concerns about the risks involved in financing startups (Ljungqvist and Wilhelm 2003;Min et al. 2008;Bouwman et al. 2012;Silva Júnior et al. 2022b). ...
... It happens that the characterizations of population nature manages to obtain as results information on the structure and large number of identity attributes of various groups of people with evolutionary continuity in time, which according to their differences configure particular ways of being and being in a territory, in this research was taken to the department of La Guajira in the country of Colombia, Because this area is a territory very rich in natural resources, which makes it a potential in the implementation of renewable energy sources, however despite this natural disposition, this area of that country is one where its inhabitants suffer from a poor quality of life (Moreno Rocha et al., 2022). These studies characterizing a population vs. its energy potentials also make it possible to focus attention on guaranteeing or re-establishing the effective enjoyment of rights of population groups, the recognition of their diversity and multiculturalism as a social wealth, the particularities and inequalities that hinder or enable their access to the dynamics and benefits of social and territorial development (Thomasi et al., 2022). The importance of correctly directing the appropriate forms of population characterization exercises lies in the fact that they allow to base the design, adjustment and implementation of public policies with a view to transforming situations considered as problematic, and offering goods and services that respond satisfactorily to the needs and interests of population groups (Zhu et al., 2022). ...
... However, during periods of economic contraction, when business is more challenging, top management is likely to be less focused on strategic planning, as they look to conserve resources and weather the downturn. This cyclical nature of the banking sector means that strategic planning is likely to be more important in some years than in others (Michelin et al., 2022).). ...
... The power category involves EB characteristics related to the influence the entrepreneur has on others, such as: (a) networking and persuasion (the entrepreneur uses strategies to influence or persuade others and has key collaborators to assist him in achieving his goals; and (b) independence and self-confidence (he seeks autonomy from the norms and controls of others, and has confidence in his own ability to perform complex activities and tasks or overcome challenges (Cooley, 1990;McClelland, 1987;Michelin et al., 2022;Mourão & Locatelli, 2020). ...
... In this analysis, a useful life of 25 years, an annual degradation rate of 0.8%, and a maintenance cost of 10% of the initial investment considering the replacement of the inverter occurring every ten years were considered. In addition, the study considered the difference between the average energy tariff adjustments of the local energy concessionaire during the last ten years and the expected values of the Special System for Settlement and Custody (Selic) rate as a discount rate Duaik et al., 2022;Rediske et al., 2022). ...
... As well as [16] who mention Energy Cloud as an energy platform, other authors also state that the energy platform can offer a solution for integrating distributed renewable energy systems with new technologies because it includes all the technical, commercial, environmental, and regulatory changes required to transition from a conventional electricity market to a clean energy distribution grid [22,23,26]. Thus, in this cloud-based power management environment, the consumer has increased autonomy to manage their power through cloud solutions, which provide less environmental impact, stability of power lines, transmission, and gathering of different forms of renewable energy [25]. ...