Papers by Mauricio Ferreira
Scholars in a wide variety of academic disciplines recognize the need and importance of reflectin... more Scholars in a wide variety of academic disciplines recognize the need and importance of reflecting upon, critiquing, and empirically examining the idea space (i.e., content and knowledge circulating) of fields; including scholars in the field of sport management. For example, Pitts and Pedersen (2001) and Pitts and Pedersen (2005) conducted content analyses examining the body of literature published in the Journal of Sport Management and Sport Marketing Quarterly. Among the assertions from these authors (as well as a number of others who have conducted critiques and similar studies in the field), is the notion that such analyses can reveal weaknesses and voids in a field's body of knowledge. In particular, scholars have noted the salient need for the greater development in sport management's content area of sport marketing (e.g., Mahony & Pitts, 1998; Pitts, 2002).
Engineering Structures, 2021
The use of steel connectors is common in construction, which are widely used in links elements in... more The use of steel connectors is common in construction, which are widely used in links elements in composite structures of steel and concrete, precast concrete and structural strengthened. In these examples the pullout strength can be a critical design, limiting the strength of bond or of structural element. Brazilian codes present few recommendations to estimate the force that can be applied to a connector depending on the reinforcement ratio of bending and international codes also have a few recommendations. Trying to evaluate the resistance of single connectors was performed a series of pullout tests in the laboratory of Civil Engineering of Universidade Federal do Pará. Were cast concrete specimens with dimensions of 350 mm base, 900 mm length and 200 mm thick , and these embedment 110 mm, overlay reinforcement of 20 mm were cast with concrete and compressive strength of 30 MPa. These specimens were fixed stud type connectors made with steel rebar of 16 mm diameter, and the tests...
13th International Conference on Space Operations 2014, 2014
The routine operation phase of a satellite occurs after its launch and initializing settings of t... more The routine operation phase of a satellite occurs after its launch and initializing settings of the satellite in orbit. The basic operational functions are routine operations that include telemetry monitoring, sending remote command and the implementation of tracking measurements, such as range and range rate, and execution of procedures, which consists of actions that are taken when the execution of a task. Currently, in the area of satellite control, there is a general interest in automating as a way of reducing in-orbit satellite maintenance costs, specially the high cost with teams operations. Besides the cost reduction, the automation can minimize errors that may be introduced by repetitive tasks. The growing number and diversity of satellites launched often leads to the increasing and complexity of the operations. This has a negative impact on safety, efficiency and operations costs. With automation, the same operators' team can control more satellites and they can use their time on other activities; human errors can be reduced by repetitive and fast execution of planned operations; a large number of verifications can be made in a short time. With the prospective of launching new satellites and reducing of financial resources, the National Institute for Space Research (INPE) has concerns about solutions that enable the operations of multiple missions keeping the same operation team. In this sense, INPE has developed automated solutions for the routine operations involving the control and tracking of satellites. The automation is evolving toward to controlling both the current missions as well the future missions. Thus, it is necessary to build a flexible architecture that easily adapt to new missions with minimal changes in the programming code. In this context, this work describes the architecture and its requirements for automating the routine tasks for different missions. The requirements were defined based on two main purposes: a) automation of routine tasks: antenna calibration, range and range rate measurements, send command, telemetry monitoring, backup, file transfer and creation of unforeseen activities; b) procedures execution: procedures can be defined as a set of activities (or actions) that are executed in sequence or a set of actions which are taken (based in conditions) when a fault occurs during the activity execution. The major prospects with automation in development at INPE are: to enable the efficient handling of a series of similar satellites; to facilitate the coding and maintenance of procedures; to favor the experience and knowledge in the field of automation technology; to ensure safe operations by reducing the human risk factor and to reduce costs with operators.
SpaceOps 2010 Conference, 2010
The prospect of multiple launches by INPE's satellite program, in the near future, has motivated ... more The prospect of multiple launches by INPE's satellite program, in the near future, has motivated the development of an application using temporal planning techniques based on Artificial Intelligence (AI) concepts. This will be used for automatic generation of flight operation plans to control satellite activities. However, making a critical analysis of these plans before real world implementation is not possible. We propose a different approach as part of a strategy to validate these plans. This will use a decision support tool AI-based data mining technique for data prediction, to assist experts in evaluating the performance of the plan, with the aim of maintaining satellite integrity.
SpaceOps 2008 Conference, 2008
SpaceOps 2008 Conference, 2008
A very important issue in distributed systems is the management of load among system nodes. Load ... more A very important issue in distributed systems is the management of load among system nodes. Load balancing enables a better use of the system resource capabilities and a better performance by allocating nodes that are more suitable for the execution of some tasks. This work proposes a multi-agent load balancing architecture for distributed object applications called MALBA which uses artificial neural networks and a set of policies to support the process of migrating and replicating the application objects. MALBA architecture outlines a decentralized and run-time balancing process that balances the load among nodes which execute a distributed object application.
Sport Management Review, 2002
The purpose of this study was to examine the links between: (a) parents' causal attributions ... more The purpose of this study was to examine the links between: (a) parents' causal attributions for youth soccer dropout, (b) parents' feelings of the degree of importance their children ascribed to soccer, (c) parents' attitudes towards the respective soccer organisation, (d) the length of time parents or children had spent in the soccer organisation, and (e) post-soccer dropout behaviour (i.e.,
Sport Management Review, 2013
The sports industry is considered an ideal field in which to deploy corporate social responsibili... more The sports industry is considered an ideal field in which to deploy corporate social responsibility initiatives due to its many distinct features, including mass media distribution, youth appeal, and positive health impacts (Smith & Westerbeek, 2007). Many professional sports leagues, each franchise team, a host of individual athletes, and many mega sporting events are actively implementing socially responsible events, promotions, and sponsorship programs (Babiak & Wolfe, 2006). For example, the National Basketball Association (NBA) named its social responsibility efforts the NBA Cares, and has employed such public campaigns as Read to Achieve, Nothing but Nets, and Basketball without Borders (NBA, 2009). By conducting these initiatives, the NBA aims to give back to the communities that support them and addresses important issues in the United States and around the world. Now social responsibility initiatives called corporate social responsibility (CSR) or community relations became pervasive and popular strategies of many sport organizations. With increased interest in social responsibility initiatives in the sports industry, academic scholars have begun looking at this trend (e.g.
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Papers by Mauricio Ferreira