Programa de Doctorat en Arquitectura de Computadors: Recent submissions
Now showing items 141-160 of 272
Reducing redundancy of real time computer graphics in mobile systems
The goal of this thesis is to propose novel and effective techniques to eliminate redundant computations that waste energy and are performed in real-time computer graphics applications, with special focus on mobile GPU ...
Low-power architectures for automatic speech recognition
Automatic Speech Recognition (ASR) is one of the most important applications in the area of cognitive computing. Fast and accurate ASR is emerging as a key application for mobile and wearable devices. These devices, such ...
Analysis and simulation of emergent architectures for internet of things
The Internet of Things (IoT) promises a plethora of new services and applications supported by a wide range of devices that includes sensors and actuators. To reach its potential IoT must break down the silos that limit ...
Cooperation in open, decentralized, and heterogeneous computer networks
Community Networks (CN) are naturally open and decentralized structures, that grow organically with the addition of heterogeneous network devices, contributed and configured as needed by their participants. The continuous ...
Knowledge-defined networking : a machine learning based approach for network and traffic modeling
The research community has considered in the past the application of Machine Learning (ML) techniques to control and operate networks. A notable example is the Knowledge Plane proposed by D.Clark et al. However, such ...
Probabilistically time-analyzable complex processor designs
Industry developing Critical Real-Time Embedded Systems (CRTES), such as Aerospace, Space, Automotive and Railways, faces relentless demands for increased guaranteed processor performance to support new advanced functionalities ...
Hierarchical distributed fog-to-cloud data management in smart cities
There is a vast amount of data being generated every day in the world with different formats, quality levels, etc. This new data, together with the archived historical data, constitute the seed for future knowledge discovery ...
Novel architectures and strategies for security offloading
Internet has become an indispensable and powerful tool in our modern society. Its ubiquitousness, pervasiveness and applicability have fostered paradigm changes around many aspects of our lives. This phenomena has positioned ...
Multicore architecture optimizations for HPC applications
From single-core CPUs to detachable compute accelerators, supercomputers made a tremendous progress by using available transistors on chip and specializing hardware for a given type of computation. Today, compute nodes ...
Identifying and diagnosing video streaming performance issues
On-line video streaming is an ever evolving ecosystem of services and technologies, where content providers are on a constant race to satisfy the users' demand for richer content and higher bitrate streams, updated set of ...
Improving heterogeneous system efficiency : architecture, scheduling, and machine learning
Computer architects are beginning to embrace heterogeneous systems as an effective method to utilize increases in transistor densities for executing a diverse range of workloads under varying performance and energy ...
Mechanisms for service-oriented resource allocation in IoT
Albeit several IoT applications have been recently deployed in several fields, including environment and industry monitoring, Smart Home, Smart Hospital and Smart Agriculture, current deployments are mostly host-oriented, ...
Simulation methodologies for future large-scale parallel systems
Since the early 2000s, computer systems have seen a transition from single-core to multi-core systems. While single-core systems included only one processor core on a chip, current multi-core processors include up to tens ...
Memory hierarchies for future HPC architectures
Efficiently managing the memory subsystem of modern multi/manycore architectures is increasingly becoming a challenge as systems grow in complexity and heterogeneity. In the field of high performance computing (HPC) in ...
Edge-elements formulation of 3D CSEM in geophysics : a parallel approach
Electromagnetic methods (EM) are an invaluable research tool in geophysics whose relevance has increased rapidly in recent years due to its wide industrial adoption. In particular, the forward modelling of three-dimensional ...
Enabling the use of embedded and mobile technologies for high-performance computing
In the late 1990s, powerful economic forces led to the adoption of commodity desktop processors in High-Performance Computing(HPC). This transformation has been so effective that the November 2016 TOP500 list is still ...
Enabling caches in probabilistic timing analysis
Hardware and software complexity of future critical real-time systems challenges the scalability of traditional timing analysis methods. Measurement-Based Probabilistic Timing Analysis (MBPTA) has recently emerged as an ...
Query expansion by relying on the structure of knowledge bases
Query expansion techniques aim at improving the results achieved by a user's query by means of introducing new expansion terms, called expansion features. Expansion features introduce new concepts that are semantically ...
Energy optimising methodologies on heterogeneous data centres
In 2013, U.S. data centres accounted for 2.2% of the country's total electricity consumption, a figure that is projected to increase rapidly over the next decade. A significant proportion of power consumed within a data ...
Forwarding fault detection in wireless community networks
Wireless community networks (WCN) are specially vulnerable to routing forwarding failures because of their intrinsic characteristics: use of inexpensive hardware that can be easily accessed; managed in a decentralized way, ...
