Connecting to the Next Generation Mobile Desktop

Mobile phones have evolved over the years from a plain device that allowed voice communication to the present day smart phones that are capable of variety of tasks. Much touted smart phone lacks some of the rudimentary business as well as other functions that are available in a traditional laptop/desktop. This article proposes a new system called Next Generation Mobile Desktop (NGMD) that provides desktop equivalent functions on a functional mobile phone. Proposed NGMD leverage some of the emerging technologies to offer enhanced services to the user. This article discusses some of the existing as well as new mobile technologies and then proposes the architecture for the NGMD. This article also discusses some of the services offered by NGMD and provides illustrative examples of them. We believe NGMD capable phones would dominate the corporate market and free up the user from carrying multiple devices while on the road

Two Energy Efficient Algorithms for Tracking Objects in a Sensor Network

We propose two energy efficient algorithms for locating a target object moving in an area covered by a wireless ad hoc network. The first algorithm developed conserve energy by efficiently identifying sensor nodes, as Home Nodes, and use only local messages between neighboring nodes to follow the trail of the object. Since we avoid the long-range transmission and maximize the localization, the algorithms reduce the communication cost. The dynamic nature of the second algorithm exploits the predefined parameters such as the object velocity. Our algorithm represents query shipping against the conventional data shipping as a means to reduce the amount of data being shipped across the network. Hence, it locates the objects over the network with minimal energy conservation using short-range message transmissions. The performance analysis (both experimental and theoretical) shows the effectiveness of the two algorithms in comparison to another tracking algorithm

Density-aware hop-count localization (DHL) algorithm in unevenly distributed wireless sensor networks

Master'sMASTER OF ENGINEERIN

Manet's (Mobile AD HOC Networks) : redes móviles inalámbricas AD HOC

El objetivo de las redes móviles Ad hoc (MANET), es soportar de manera eficiente y robusta la operación de las redes móviles inalámbricas incorporando la funcionalidad de enrutamiento en nodos móviles. Estas redes están diseñadas para ser dinámicas y aleatorias, con topologías cambiantes que están compuestas normalmente por conexiones inalámbricas de un ancho de banda relativamente restringido. Una MANET (Mobile Ad hoc Network) es una colección de nodos móviles inalámbricos que forman una estructura temporal sin la necesidad de una infraestructura. Debido a la naturaleza dinámica de la topología de este tipo de redes, el establecimiento de rutas en una MANET puede ser suspendido debido a la movilidad de los nodos. Las frecuentes caídas y recuperaciones de los enlaces, dificultan el comportamiento de protocolos de enrutamiento que soporten este tipo de redes. En este trabajo se realiza una descripción general acerca de las redes Ad hoc, se entrega una visión general de los protocolos MANET existentes en la actualidad clasificados según distintos criterios y su implementación en distintas aplicaciones

Mapeamento de fluxo de valor apoiado por sistemas de rastreio

Tese (doutorado) - Universidade Federal de Santa Catarina, Centro Tecnológico. Programa de Pós-Graduação em Engenharia de ProduçãoA Manufatura Enxuta (ME), também conhecida como Sistema Toyota de Produção (STP), vem sendo utilizada por empresas do mundo inteiro, interessadas em buscar excelência em flexibilidade, qualidade, custos e desempenho na entrega. A ME apoia-se na utilização de um conjunto de práticas que visam alcançar estes objetivos, e o Mapa de Fluxo de Valor (MFV) tem-se mostrado como uma das suas práticas mais importantes. O MFV tem o objetivo de auxiliar as empresas no reconhecimento dos seus desperdícios, auxiliando na redução de custos e no aumento da produtividade e qualidade. Em estudos realizados sobre aplicações de MFV, identificaram-se alguns problemas que dificultam sua execução. Sua principal causa é a dificuldade na coleta de dados do processo produtivo, utilizados para construção de MFVs. De outra forma, a aplicação de tecnologias para rastreio vem crescendo de maneira expressiva, com a adoção de normas e padrões para o setor. Este trabalho tem o objetivo de desenvolver um método alternativo para coleta de dados utilizando equipamentos para georreferenciamento (GNSS), testá-lo na prática, e verificar se realmente pode servir como alternativa à coleta de dados para construção de MFVs. Este novo método, que pretende utilizar tecnologias de rastreio para construir MFVs, tem o objetivo de facilitar a coleta de dados em processos produtivos e tornar a execução dos mapas uma prática constante nas empresas.Lean Manufacturing (LM), also known as Toyota Production System (TPS) has been used by companies around the world, interested in pursuing excellence in flexibility, quality, cost and delivery performance. LM relies on the use of a set of practices aimed at achieving these goals, and Value Stream Map (VSM) has been shown as one of its most important practices. The VSM help companies in recognition of their waste, helping to reduce costs and increase productivity and quality. In studies about VSM applications, we identified some problems that hinder its implementation. Its main cause is the difficulty in collecting data from the production process, used for construction of FSMs. Otherwise, the application of technologies for screening is clearly growing, with the adoption of standards and industry standards. This work aims to develop an alternative method for data collection using equipment for georeferencing (GNSS), test it in practice, and make sure that it can serve as an alternative to data collection for construction of VSMs. This new method, you want to use tracking technologies to build VSMs, aims to facilitate the data collection processes and the implementation of the maps become a constant practice in companies

Parallel robot design incorporating a direct end effector sensing system.

Thesis (M.Sc.Eng.)-University of KwaZulu-Natal, 2007.This dissertation details the development of a parallel robot with an integrated direct end effector sensing system, from concept to prototype model and includes details of research, design, simulation, construction, assembly and testing. Current research in parallel robots is insufficient as compared to serial type machines, even though their existence has been known for some time. The reasons are the difficulty in conceptualising unique parallel mechanisms, achieving machines that are capable of high accuracy, solving their complex kinematics, dynamics and control problems. There are many advantages of parallel machines that rival the serial type, and these warrant further studies. The second aspect of this project was the design of a direct end effector sensor system. Many existing automated multi-axis machines operate under overall 'open loop' control. The exact position in space of the end effector or tool head, for those machines, is not sensed directly but is calculated by software monitoring sensors on actuator axes. This sensor system and robot structure was designed specifically for use in the agricultural and general food processing/packaging industries. The accuracy and repeatability of such a machine and its sensor system are in the millimetre range

Privacy considerations in the adoption of L-Commerce

Ph.DDOCTOR OF PHILOSOPH