VCare: A Personal Emergency Response System to Promote Safe and Independent Living Among Elders Staying by Themselves in Community or Residential Settings

‘Population aging’ is a growing concern for most of us living in the twenty first century, primarily because many of us in the next few years will have a senior person to care for - spending money towards their healthcare expenditures AND/OR having to balance a full-time job with the responsibility of care-giving, travelling from another city to be with this elderly citizen who might be our parent, grand-parent or even community elders. As informal care-givers, if somehow we were able to monitor the day-to-day activities of our elderly dependents, and be alerted when wrong happens to them that would be of great help and lower the care-giving burden considerably. Information and Communication Technology (ICT) can certainly help in such a scenario, with tools and techniques that ensure safe living for the individual we are caring for, and save us from a lot of worry by providing us with anytime access into their lives or activities, and as a result check their functional state. However, we should be mindful of the tactics that could be adopted by harm causers to steal data stored in these products and try to curb the associated service costs. In short, we are in need of robust, cost-effective, useful, and secure solutions to help elders in our society to ‘age gracefully’. This work is a little step taken towards that direction. ‘Population aging’ is a growing concern for most of us living in the twenty first century, primarily because many of us in the next few years will have a senior person to care for - spending money towards their healthcare expenditures AND/OR having to balance a full-time job with the responsibility of care-giving, travelling from another city to be with this elderly citizen who might be our parent, grand-parent or even community elders. As informal care-givers, if somehow we were able to monitor the day-to-day activities of our elderly dependents, and be alerted when wrong happens to them that would be of great help and lower the care-giving burden considerably. Information and Communication Technology (ICT) can certainly help in such a scenario, with tools and techniques that ensure safe living for the individual we are caring for, and save us from a lot of worry by providing us with anytime access into their lives or activities, and as a result check their functional state. However, we should be mindful of the tactics that could be adopted by harm causers to steal data stored in these products and try to curb the associated service costs. In short, we are in need of robust, cost-effective, useful, and secure solutions to help elders in our society to ‘age gracefully’. This work is a little step taken towards that direction. Advisor: Tadeusz Wysock

Policy-based power consumption management in smart energy community using single agent and multi agent Q learning algorithms

Power consumption in residential sector has increased due to growing population, economic growth, invention of many electrical appliances and therefore is becoming a growing concern in the power industry. Managing power consumption in residential sector without sacrificing user comfort has become one of the main research areas recently. The complexity of the power system keeps growing due to the penetration of alternative sources of electric energy such as solar plant, Hydro, Biomass, Geothermal and wind farm to meet the growing demand for electricity. To overcome the challenges due to complexity, the power grid needs to be intelligent in all aspects. As the grid gets smarter and smarter, considerable efforts are being undertaken to make the houses and businesses smarter in consuming the electrical energy to minimize and level the electricity demand which is also known as Demand Side Management (DSM). It also necessitates that the conventional way of modelling, control and energy management in all sectors needs to be enhanced or replaced by intelligent information processing techniques. In our research work, it has been done in several stages. (Purpose of Study and Results) We proposed a policy-based framework which allows intelligent and flexible energy management of home appliances in a smart home which is complex and dynamic in ways that saves energy automatically. We considered the challenges in formalizing the behaviour of the appliances using their states and managing the energy consumption using policies. Policies are rules which are created and edited by a house agent to deal with situations or power problems that are likely to occur. Each time the power problem arises the house agent will refer to policy and one or a set of rules will be executed to overcome that situation. Our policy-based smart home can manage energy efficiently and can significantly participate in reducing peak energy demand (thereby may reduce carbon emission). Our proposed policy-based framework achieves peak shaving so that power consumption adapts to available power, while ensuring the comfort level of the inhabitants and taking device characteristics in to account. Our simulation results on MATLAB indicate that the proposed Policy driven homes can effectively contribute to Demand side power management by decreasing the peak hour usage of the appliances and can efficiently manage energy in a smart home in a user-friendly way. We propounded and developed peak demand management algorithms for a Smart Energy Community using different types of coordination mechanisms for coordination of multiple house agents working in the same environment. These algorithms use centralized model, decentralized model, hybrid model and Pareto resource allocation model for resource allocation. We modelled user comfort for the appliance based on user preference, the power reduction capability and the important activities that run around the house associated with that appliance. Moreover, we compared these algorithms with respect to their peak reduction capability, overall comfort of the community, simplicity of the algorithm and community involvement and finally able to find the best performing algorithm among them. Our simulation results show that the proposed coordination algorithms can effectively reduce peak demand while maintaining user comfort. With the help of our proposed algorithms, the demand for electricity of a smart community can be managed intelligently and sustainably. This work is not only aiming for peak reduction management it aims for achieving it while keeping the comfort level of the inhabitants is minimum. It can learn user’s behaviour and establish the set of optimal rules dynamically. If the available power to a house is kept at a certain level the house agent will learn to use this notional power to operate all the appliances according to the requirements and comfort level of the household. This way the consumers are forced to use the power below the set level which can result in the over-all power consumption be maintained at a certain rate or level which means sustainability is possible or depletion of natural resources for electricity can be reduced. Temporal interactions of Energy Demand by local users and renewable energy sources can also be done more efficiently by having a set of new policy rules to switch between the utility and the renewable source of energy but it is beyond the scope of this thesis. We applied Q learning techniques to a home energy management agent where the agent learns to find the optimal sequence of turning off appliances so that the appliances with higher priority will not be switched off during peak demand period or power consumption management. The policy-based home energy management determines the optimal policy at every instant dynamically by learning through the interaction with the environment using one of the reinforcement learning approaches called Q-learning. The Q-learning home power consumption problem formulation consisting of state space, actions and reward function is presented. The implications of these simulation results are that the proposed Q- learning based power consumption management is very effective and enables the users to have minimum discomfort during participation in peak demand management or at the time when power consumption management is essential when the available power is rationale. This work is extended to a group of 10 houses and three multi agent Q- learning algorithms are proposed and developed for improving the individual and community comfort while at the same time keeping the power consumption below the available power level or electricity price below the set price. The proposed algorithms are weighted strategy sharing algorithm, concurrent Q learning algorithm and cooperative distributive learning algorithm. These proposed algorithms are coded and tested for managing power consumption of a group of 10 houses and the performance of all three algorithms with respect to power management and community comfort is studied and compared. Actual power consumption of a community and modified power consumption curves using Weighted Strategy Sharing algorithm, Concurrent learning and Distributive Q Learning and user comfort results are presented, and the results are analysed in this thesis

Language engineering - a champion for European culture

Language is key to culture. It is a direct cultural medium as well as a means of recording and providing access to non-lingual elements of culture. Language is also fundamental to a sense of cultural identity. For this reason, it is vital, in a changing Europe, that we preserve the multi-lingual character of our society in order to move successfully towards closer co-operation at a political, economic, and social level. Language engineering is the application of knowledge of language to the development of computer software which can recognise, understand, interpret, and generate human language in all its forms. The paper provides a high level view of the ‘state of the art’ in language engineering and indicates ways in which it will have a profound impact on our culture in the future. It shows how advances in language engineering are an important aid in maintaining cultural diversity in a multi-lingual European society, while enabling the development of social cohesion across cultural and national divides. It addresses issues raised by the prospect of the Multi-lingual Information Society, including education, human communication with technology and information management, as well as aspects of digital cities such as tele-presence in digital libraries, virtual art galleries and electronic museums. The paper raises the issue of language as a factor in cultural domination, showing the contribution that language engineering can make towards countering it. The paper also raises a number of controversial issues concerning the likely benefits arising from the ways in which language is likely to influence the culture of Europe

Security challenges with virtualization

Tese de mestrado, Segurança Informática, Universidade de Lisboa, Faculdade de Ciências, 2009Virtualização é uma palavra em voga no mundo das tecnologias de informação. Com a promessa de reduzir o constante crescimento das infra-estruturas informáticas dentro de um centro de processamento de dados, aliado a outros aspectos importantes como disponibilidade e escalabilidade, as tecnologias de virtualização têm vindo a ganhar popularidade, não só entre os profissionais de tecnologias de informação mas também administradores e directores. No entanto, o aumento da adopção do uso desta tecnologia expõe o sistema a novas preocupações de segurança que normalmente são negligenciadas. Esta tese apresenta o estado da arte das soluções actualmente mais usadas de virtualização de servidores e também um estudo literário dos vários problemas de segurança das tecnologias de virtualização. Estes problemas não são específicos em termos de produto, e são abordados no âmbito de tecnologias de virtualização. No entanto, nesta tese é feita uma análise de vulnerabilidades de duas das mais conhecidas soluções de virtualização: Vmware EXS e Xen. No final, são descritas algumas soluções para melhorar a segurança de acesso a banco online e de comercio electrónico, usando virtualização.Virtualization is a hype word in the IT world. With the promise to reduce the ever-growing infrastructure inside data centers allied to other important concerns such as availability and scalability, virtualization technology has been gaining popularity not only with IT professionals but also among administrators and directors as well. The increasingly rising rate of the adoption of this technology has exposed these systems to new security concerns which in recent history have been ignored or simply overlooked. This thesis presents an in depth state of art look at the currently most used server virtualization solutions, as well as a literature study on various security issues found within this virtualization technology. These issues can be applied to all the current virtualization technologies available without focusing on a specific solution. However, we do a vulnerability analysis of two of the most known virtualization solutions: VMware ESX and Xen. Finally, we describe some solutions on how to improve the security of online banking and e-commerce, using virtualization

Where Women Stand in Rural Electrification Efforts: An Exploratory Study within Gujarat

Since its 2003 village electrification scheme, the state of Gujarat has been acclaimed for providing rural households with 24-hour access and farmers with uninterrupted 8-hour power supply. The Government of India has emphasized goals of providing electricity for all of its citizens yet has been unable to address glaring discrepancies across the country. For those in rural areas, which is approximately 60-70 percent of India’s population, a varying degree of connection exists plagued by frequent outages, transmission losses, unreliable billing practices, and poor infrastructure maintenance. Gujarat has been reported to have overcome these obstacles with its bifurcation of electricity feeders, providing quality electricity access to 100 percent of its villages in just a few years. With the focus of these rural electrification efforts to increase the number of people with access, this paper looks to understand what it means for the women of these households to gain access. Amongst recipients, women are expected to benefit greatly as the primary bearers of household drudgery and work. Through the Gujarat-based rural women’s empowerment organization ANANDI, this study utilized both qualitative and quantitative interviews and surveys to understand how rural women from the Sihor and Umrala blocks of Gujarat engage with electrification and to what extent they perceive its impacts. In doing so, this study is not representative of all rural women yet it provides initial insight into how electricity represents a critical element of their day-to-day lives while traditional power hierarchies remain prevalent even in electricity usage

Energy Profiling for Off-Grid Energization Solutions in Namibia

In Namibia, over 3800 unelectrified settlements will not receive grid power for 20 years. The Namibian government has proposed the implementation of privately-owned, institutionally-regulated renewable energy businesses to help provide energy services to these areas. The EPOGES toolkit, prepared for the Desert Research Foundation of Namibia, allows an entrepreneur to assess the market in an unelectrified area for the introduction of a renewable energy business. These businesses will provide income generation and accessible energy services to unelectrified communities

Discourse Analysis and Terminology in Languages for Specific Purposes

Aquest importantíssim recull conté estudis i reflexions sobre temes rellevants en la recerca sobre LSP: anglès mèdic, el llenguatge de la publicitat i periodístic, telecomunicacions i terminologia informàtica, llenguatge comercial i jurídic... Malgrat que gran part dels treballs aplegats es refereixen a l'anglès, també hi ha que tracten l'alemany, francès i altres llengües. Conté textos en anglès, francés, portuguès i castellà

Easy management and user interconnection across Grid sites

Dissertação de mestrado em Engenharia de InformáticaDistributed computing systems are undoubtedly a powerful resource,providing functions that no other system can do. However, their inherent complexity can lead many users and institutions not to consider these systems when faced by challenges posed by the deployment and administration tasks. The first solution for this problem is the European Grid Initiative (EGI) roll, a tool that simplifies and streamlines those tasks, by extending the tools that are currently available for cluster administration to the grid. It allows the infrastructure to be easily scaled and adopted by the institutions that are involved in grid projects such as EGI. The second part of this work consists of a platform that enables the interconnection of computing assets from multiple sources to create a unified pool of resources. It addresses the challenge of building a global computing infrastructure by providing a communication overlay able to deal with the existence of computing facilities located behind NAT devices. The integration of these two tools results in a solution that not only scales the infrastructure by simplifying the deployment and administration, but also enables the interconnection of those resources

Annotating and abstracting the english text

Даний посібник призначений для аспірантів, магістрів і студентів, що бажають навчитися складати англійською мовою анотації і реферати до статей за своєю спеціальністю. Мета посібника – навчити студентів і аспірантів розуміти зміст науково-популярних і технічних текстів і викладати зміст прочитаного у вигляді реферату або анотації. А також навчити їх користуватися лексико-синтаксичними кліше, найбільш характерними для мови певної галузі