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Autonomous Surface Vehicles (ASVs) rely on two layers of guidance for effective path planning: global and local methods. Global methods require a macroscopic view of the mission's goals in order to efficiently navigate an environment. For this research, different global path planner algorithms are explored both in simulation and in field tests to observe path planner qualities for modularity, practicality,...
The decisional capability of robotic systems has expended significantly in recent years. Their validation typically implies expensive and laborious test campaigns in the field. Part of the validation could use simulation means, but there is currently no systematic method to test robots in virtual worlds. This work aims to provide such a method. We discuss the challenges regarding the definition of...
Code changes are often reviewed before they are deployed. Popular source control systems aid code review by presenting textual differences between old and new versions of the code, leaving developers with the difficult task of determining whether the differences actually produced the desired behavior. Fortunately, we can mine such information from code repositories. We propose aiding code review with...
In this paper the authors present the results of research to develop the visual system for autonomous flying agent. The core elements of the vision system which were designed and implemented in the earlier stage of the project are brought together. The second aim is to show capabilities of a simulation environment designed and developed by the authors in order to enable testing of the vision systems...
The objective of this work is to introduce an autonomous Hovercraft with minimum Energy consumption. To achieve this goal, a computer simulation in addition to practical testing of a simple hovercraft model have been carried out. A mathematical model for the hovercraft is considered and simulated in the MATLAB/SIMULINK environment. A navigation system with Global Positioning System (GPS) integrated...
The ability to navigate in diverse and previously unknown environments is a critical service of autonomous robots. The validation of the navigation software typically involves test campaigns in the field, which are costly and potentially risky for the robot itself or its environment. An alternative approach is to perform simulation-based testing, by immersing the software in virtual worlds. A question...
This paper addresses the overall problem of estimating the quality of a test suite when testing is performed at a platform-independent level, using executable UML models. The problem is that the test suite is often required to fulfill structural code coverage criteria. In the avionics domain it is usually required that the tests achieve 100% coverage according to logic-based coverage criteria. Such...
Ever-evolving technologies allow modern libraries to introduce multiple digital devices to enable readers to more easily find their desired books. However, the cognitive abilities of children might bring about incorrect use of these devices. Therefore, it is imperative that libraries pursue innovative service such as smart book-finding specifically designed for children to accommodate their needs...
Langkawi is one of the most popular tourist destinations in Malaysia, with over 2.5 million tourists visit the island per year. To explore the entire treasure and uniqueness of the island through the easiest way and shortest time, an android-based application is specially built based on the tourism information about Langkawi. Smart Langkawi Tourism is a free download application available in PlayStore...
In this work, we present a tool that systematically discovers and tests the user-observable states of an Android application. We define an appropriate notion of test coverage, and we show the tool's potential by applying it to several publicly available applications.
Discover how the University of Florida's team prepared for the most difficult collegiate-level robotic competition. The Web extra at https://youtu.be/ODmYL8SQcN8 showcases the development of the NaviGator Autonomous Maritime System for participation in the 2016 Maritime RobotX Challenge in Hawaii.
Developers spend a significant amount of their time exploring source code. Yet, little is known about the way developers break down their code exploration or the fine-grained navigation for change tasks within methods. The objective of our research is to address this gap and learn more about developers' code navigation for change tasks to devise better tool support. For our research, we perform exploratory...
Software tend to evolve over time and so does the test-suite. Regression testing is aimed at assessing that the software evolution did not compromise the working of the existing software components. However, as the software and consequently the test-suite grow in size, the execution of the entire test-suite for each new build becomes infeasible. Techniques like test-suite selection, test-suite minimisation...
Automated display testing for visual unpleasant and erroneous navigation sequences is an important step to preserve a high quality standard for premium vehicle manufacturers. This paper presents a novel error detection algorithm for navigation sequences based on novelty detection on motion parameters obtained from real world navigation sequences. Motion parameters are accumulated through key point...
The takeover phase from highly automated systems, when the transition phase is short (here 10s), is critical for the driver when he has been out of the driving loop. We conducted a simulator study on 26 drivers to compare three conditions: manual mode (MD), transition from automated driving (AD) to MD with a classical head up display (HUD), transition from (AD) to MD with an augmented reality (AR)...
The objective of the study is to design an alternative mouse for persons with hand disability. It is composed of microcontroller and sensor pad. Sensor pad consist of commonly used shortcut keys and four arrow keys. Sensor pad will determine which of the shortcut and arrow keys where pressed. The microcontroller processes the input coming from the sensor pad and it outputs the cursor's navigation...
A citation network visualizer tool has been developed in an earlier research. The tool is able to visualize multiple data at the same coordinates. However, all of the citation network data are displayed in a full view that is limited to the cartesian coordinates system. This will make citation network be more complex when the number of citation network data to be visualized increases. A complex citation...
This paper describes field testing of state estimation and navigation for autonomous underwater vehicle (AUV) operation in the presence of water currents. In the presented approach, an extended Kalman filter (EKF) is used to estimate the water currents in the north and east directions in real-time during AUV missions. These water current estimates are then used to compensate the desired AUV heading...
Military combat divers conduct underwater navigation missions in conditions with extremely poor visibility. Critical to the success of these missions is accurate underwater navigation, as well as staying within closed circuit oxygen rebreather depth limits. Unfortunately, handheld or tactical board mounted compasses, depth gauges, and chronometers can become virtually useless in the zero visibility...
Underwater communication and robot technologies have grown rapidly in the last decade. Systems made of underwater unmanned vehicles have moved from single vehicle deployments to systems comprising teams of assets. As of today the possibility to support cooperation and interoperability of heterogeneous platforms is a key issue. The objective of this paper is to present the SUNRISE [1] approach to overcome...
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