- R Marques d'Avila e Bolama, Dep. Informatica.
- +351-275319700
- Ambient Assisted Living, Computer Networks, Complex Networks, Next Generation Internet Research, Human Computer Interaction, Bioinformatics, and 20 moreComputer Ethics, Bioengineering, Software Engineering, Biocomputing, Computer Networks and Communications, Computer Science, Network Security, Algorithms, Database Systems, Operating Systems, Biomedical Engineering, Data Structures, PhD Thesis on Optical Burst Switching Networks Architectures and Algorithms, Surface Electromyography, Complexity, Complexity Science and Design, Computer Network architecture, Shortest path with Ant Routing Algorithm in wireless traffic network, Engineering, and Information Technologyedit
- Nuno M. Garcia is Assistant Professor and Computer Science Engineering BSc Course Director at the University of Beira... moreNuno M. Garcia is Assistant Professor and Computer Science Engineering BSc Course Director at the University of Beira Interior (Covilhã, Portugal). He is also Invited Associate Professor at the Universidade Lusófona de Humanidades e Tecnologias (Lisbon, Portugal).edit
Research Interests:
ABSTRACT This research aims to discover methods for the detection of the area of a wound using mobile devices. These devices have low memory and low processing capacity and they need the use of low complexity operations to identify a... more
ABSTRACT This research aims to discover methods for the detection of the area of a wound using mobile devices. These devices have low memory and low processing capacity and they need the use of low complexity operations to identify a wound. The calculation of the wounded area consists of three phases, there are: image acquisition, image processing, surface reconstruction and calculations. This research is related to the use a mobile device to identify wound contours and area in a captured image. This image can be captured with a camera in a smartphone and the wound area is calculated based on the distance of the surface area and the resolution of the image captured. The main study in this research is the image processing in a mobile device, due to the limitations of these devices. However, the application developed during this research was developed for desktop, using the OpenCV library that is compatible with the Android platform and Java desktop technologies. During this research, the developed code written in Java will be easily adapted to the Android platform. The desktop application developed is available in a free repository for testing.
ABSTRACT This paper describes the research and implementation and validation method of a smartphone application that calculates a vertical jump flight time, using the data collected from the accelerometry sensors in a smartphone. To... more
ABSTRACT This paper describes the research and implementation and validation method of a smartphone application that calculates a vertical jump flight time, using the data collected from the accelerometry sensors in a smartphone. To validate the algorithm results, a statistical number of experiments were performed. While recording the experimental data with a commodity smartphone, a bioPlux Research device equipped with a pressure sensor and with a tri-axial accelerometer was also used to estimate the time the user was airborne while jumping, as a golden standard. The pressure sensor was placed in a jump platform built in the laboratory, and a tri-axial accelerometer was placed on the user’s waist. The data collected by this device were compared with data obtained by smartphone in order to validate the algorithm and make the necessary corrections. The research data and the developed application are available for download and further research in a free and public repository.
In this study, the effects of time slot parameters on the performance of time domain switching optical burst switched networks (OBS) are studied. We investigate OBS networks where all core nodes are able to receive and send data. Network... more
In this study, the effects of time slot parameters on
the performance of time domain switching optical burst switched
networks (OBS) are studied. We investigate OBS networks where
all core nodes are able to receive and send data. Network throughput
is reduced when bursts are not able to secure necessary time
slots for their transmission due to heavy contention at the core
networks and lack of proper selection of time slot parameters.
In this paper, we investigate the performance of slotted OBS
when time slot parameters are varied. Time slot parameters
investigated are: frame size, time slot size. Additionally, we
analyse the effect of network size when time slot and other
parameters are kept constant. Metrics used for evaluation are
delay and throughput. Simulation results prove that given the
same route, wavelength and time slot assignment algorithm, time
slot parameters influence the overall network performance
the performance of time domain switching optical burst switched
networks (OBS) are studied. We investigate OBS networks where
all core nodes are able to receive and send data. Network throughput
is reduced when bursts are not able to secure necessary time
slots for their transmission due to heavy contention at the core
networks and lack of proper selection of time slot parameters.
In this paper, we investigate the performance of slotted OBS
when time slot parameters are varied. Time slot parameters
investigated are: frame size, time slot size. Additionally, we
analyse the effect of network size when time slot and other
parameters are kept constant. Metrics used for evaluation are
delay and throughput. Simulation results prove that given the
same route, wavelength and time slot assignment algorithm, time
slot parameters influence the overall network performance
Research Interests:
Research Interests:
In this study, the effects of time slot parameters on the performance of time domain switching optical burst switched networks (OBS) are studied. We investigate OBS networks where all core nodes are able to receive and send data. Network... more
In this study, the effects of time slot parameters on the performance of time domain switching optical burst switched networks (OBS) are studied. We investigate OBS networks where all core nodes are able to receive and send data. Network throughput is reduced when bursts are not able to secure necessary time slots for their transmission due to heavy contention at the core networks and lack of proper selection of time slot parameters. In this paper, we investigate the performance of slotted OBS when time slot parameters are varied. Time slot parameters investigated are: frame size, time slot size. Additionally, we analyse the effect of network size when time slot and other parameters are kept constant. Metrics used for evaluation are delay and throughput. Simulation results prove that given the same route, wavelength and time slot assignment algorithm, time slot parameters influence the overall network performance.
Research Interests:
Research Interests: Information Technology, Literature Review, Mobility Management, Power Consumption, Mobile Device, and 14 moreUser preferences, Performance Monitoring, HUMAN ERROR, Health monitoring, Learning from experience, Context Aware Recommender Systems, User Behavior, Wireless access, Context Aware, Radio Access Technology, Assisted Living, Background Knowledge, Process Capability, and Data Transmission
Research Interests:
Abstract—Optical networks are in continuous demand for their large bandwidth availability. Many optical switching paradigms have been proposed. Among these paradigms, three of them have received more attention from scientists and... more
Abstract—Optical networks are in continuous demand for their large bandwidth availability. Many optical switching paradigms have been proposed. Among these paradigms, three of them have received more attention from scientists and researchers in this field. These three paradigms are: Optical Circuit Switching (OCS), Optical Packet Switching (OPS) and Optical Burst Switching (OBS). The last paradigm is seen as the most viable solution to support the growth of Internet users and bandwidth-greedy applications.
Surgical theatres are environments where special conditions such as the need to maintain sterile the surgical equipments and tools are of extreme importance. The increased need to use computer equipments in the surgical theatre, along... more
Surgical theatres are environments where special conditions such as the need to maintain sterile the surgical equipments and tools are of extreme importance. The increased need to use computer equipments in the surgical theatre, along with the need to bring these equipments closer to the surgeons, poses additional sterilization problems. Although some computer parts may be kept outside the sterile room, as for example, the processing and storage units, some parts need to be close to the surgeon, such as the screen and the devices than control the interfaces. This paper describes how some interface control devices may be replaced by a device that does not need to be sterile, as it can be placed underneath the surgeon sterile clothes.
This thesis focus on Optical Burst Switching Algorithms and Architectures. It covers the research work developed over 3 years at the research group in Siemens and in Nokia Siemens Networks in Lisbon.