976 research outputs found
Ab initio : a new concept in engineering education, a history of the design, creation and implementation of a new School of Engineering in Richmond, Virginia (1990-2000)
Dr. Henry A. McGee, Jr., Founding Dean Emeritus of the School of Engineering at Virginia Commonwealth University, chronicles the history of the School of Engineering through his term as Founding Dean, 1994â1999. McGee details the process of creating a program aimed to balance innovation and entrepreneurship.https://scholarscompass.vcu.edu/vcu_books/1017/thumbnail.jp
A literature analysis examining the potential suitability of terahertz imaging to detect friction ridge detail preserved in the imprimatura layer of oil-based, painted artwork
This literature analysis examines terahertz (THz) imaging as a non-invasive tool for the imaging of friction ridge detail from the first painted layer (imprimatura) in multilayered painted works of art. The paintings of interest are those created utilizing techniques developed during the Renaissance and still in use today. The goal of analysis serves to answer two questions. First, can THz radiation penetrate paint layers covering the imprimatura to reveal friction ridge information? Secondly, can the this technology
recover friction ridge detail such that the fine details are sufficiently resolved to provide
images suitable for comparison and identification purposes.
If a comparison standard exists, recovered friction ridge detail from this layer can be used to establish linkages to an artist or between works of art. Further, it can be added to other scientific methods currently employed to assist with the authentication efforts of unattributed paintings.
Flanked by the microwave and far-infrared edges, THz straddles the electronic and optic perspectives of the electromagnetic spectrum. As a consequence, this range is imparted with unique and useful properties. Able to penetrate and image through many opaque materials, its non-ionizing radiation is an ideal non-destructive technique that provides visual information from a paintingâs sub-strata. Imaging is possible where refractive index differences exist between different paint layers.
Though it is impossible, at present, to determine when a fingerprint was deposited, one can infer approximately when a print was created if it is recovered from the imprimatura layer of a painting, and can be subsequently attributed to a known source. Fingerprints are unique, a person is only able to deposit prints while their physical body is intact and thus, in some cases, the multiple layer process some artists use in their work may be used to the examinerâs advantage.
Impressions of friction ridge detail have been recorded on receiving surfaces from human hands throughout time (and have also been discovered in works of art). Yet, the potential to associate those recorded impressions to a specific individual was only realized just over one hundred years ago. Much like the use of friction ridge skin, the relatively recently discovered THz range is now better understood; its tremendous potential unlocked by growing research and technology designed to exploit its unique properties
The case of Ferbritas Cadastre Information System
The processes of mobilization of land for infrastructures of public and private domain are
developed according to proper legal frameworks and systematically confronted with the
impoverished national situation as regards the cadastral identification and regularization,
which leads to big inefficiencies, sometimes with very negative impact to the overall
effectiveness.
This project report describes Ferbritas Cadastre Information System (FBSIC) project and
tools, which in conjunction with other applications, allow managing the entire life-cycle of
Land Acquisition and Cadastre, including support to field activities with the integration of
information collected in the field, the development of multi-criteria analysis information,
monitoring all information in the exploration stage, and the automated generation of outputs.
The benefits are evident at the level of operational efficiency, including tools that enable
process integration and standardization of procedures, facilitate analysis and quality control
and maximize performance in the acquisition, maintenance and management of registration
information and expropriation (expropriation projects). Therefore, the implemented system
achieves levels of robustness, comprehensiveness, openness, scalability and reliability
suitable for a structural platform.
The resultant solution, FBSIC, is a fit-for-purpose cadastre information system rooted in the
field of railway infrastructures.
FBSIC integrating nature of allows: to accomplish present needs and scale to meet future
services; to collect, maintain, manage and share all information in one common platform,
and transform it into knowledge; to relate with other platforms; to increase accuracy and
productivity of business processes related with land property management
In the Vernacular: Photography of the Everyday
This is the catalogue of the exhibition "In the Vernacular" at Boston University Art Gallery
Central monitoring system for ambient assisted living
Smart homes for aged care enable the elderly to stay in their own homes longer. By means of various types of ambient and wearable sensors information is gathered on people living in smart homes for aged care. This information is then processed to determine the activities of daily living (ADL) and provide vital information to carers. Many examples of smart homes for aged care can be found in literature, however, little or no evidence can be found with respect to interoperability of various sensors and devices along with associated functions. One key element with respect to interoperability is the central monitoring system in a smart home. This thesis analyses and presents key functions and requirements of a central monitoring system. The outcomes of this thesis may benefit developers of smart homes for aged care
Spatial representation of public displays networks
Dissertação de mestrado integrado em Engenharia de ComunicaçÔesEste trabalho faz parte do projeto Europeu Pd-Net e tem como objectivo
identificar e abordar os desafios tecnológicos e de investigação relacionados com a
criação de redes, em larga escala, de ecrĂŁs pĂșblicos e sensores associados.
O aparecimento das redes de larga escala de ecrĂŁs pĂșblicos irĂĄ representar uma
mudança significativa no modo como pensamos sobre a disseminação de informação
em espaços pĂșblicos e criarĂĄ uma nova ĂĄrea de investigação, as bases para um novo
meio de comunicação e novas oportunidades de negócio. De igual modo, é esperada
uma mudança nos espaços pĂșblicos para espaços inteligentes que podem ser ajustados
para refletir as esperanças, aspiraçÔes e interesses dos ocupantes que utilizam o
conteĂșdo e as aplicaçÔes criadas em qualquer parte da rede.
Um dos pontos-chave da rede de ecrĂŁs pĂșblicos Ă© a possibilidade de endereçar a
rede como um todo e focar nas relaçÔes espaciais entre os ecrãs.This work is part of Pd-Net, a European project that aims to explore the
scientific challenges and new technologies required to enable the emergence of large
scale networks of pervasive public displays and associated sensors that are open to
applications and content from many sources. The emergence of such pervasive display
networks would represent a radical transformation in the way we think about
information dissemination in public spaces and will create a new research area, provide
the foundations for a new communication medium and new business opportunities. In
the same way, it is expected a change from public spaces â from todayâs environments
in which information is pushed to passers-by in the form of adverts â to spaces that can
utilise ambient intelligence to be tailored to reflect the hopes, aspirations and interests
of its occupants using content and applications created anywhere in a global network.
One of the interesting features of pervasive displays networks is the possibility
to address the network as a whole and to focus on the spatial relations between displays
The sacrament of friendship: disrupting lonely landscapes in American higher education
Loneliness is on the rise. Students in higher education report increased feelings of isolation, anxiety, and depression and the non-stop transactional culture rarely leaves time for quiet self-reflection or the cultivation of deep ties. Drawing connections between this spiritual impoverishment and the infantilization of Roman Catholic laity, this project engages a theopoetic of the Holy Trinity and feminist ecclesiology to argue for an expansion of sacramental consciousness. My strategic proposal for transformation rests in the design of a sacramental friendship program that nourishes a posture towards receptivity, innovation, just discipleship, and gratitude. This spacious scaffolding invites students to dig deep into their already holy lives, developing the skills of active listening and mindful presence to prioritize relationships over tasks
Building the OD professional of the future: creating a blueprint for new models of organisational development practice in the NHS
The National Health Service (NHS) in England provides vital care to the population, free at the point of delivery. Demographic changes in society and advances in treatment of illness have resulted in a population that is living longer with complex long-term conditions. For the NHS this means a shift from episodic reactive care to predictive, preventative and ongoing care with patients at the heart of the approach. The 2014 Five Year Forward View set out a direction of travel for services to be integrated in order to break down barriers between organisations, moving from old to new models of care.
Organisational Development (OD) practitioners tasked with supporting the change efforts required to move to new models of care were struggling to get the traction needed. Inquiries led by the NHS OD community revealed a transactional bias to their activities, using traditional models of âdiagnosticâ OD. The new models of care prompted me in my national role supporting the development of OD practitioners to explore if the present practice of OD was fit for the future.
Over a two-year period, fourteen OD practitioners from across the NHS worked in an Action Research group using co-operative inquiry methods to answer the question how do we build the OD professional of the future? We explored four areas in depth: locating ourselves in practice; new models of OD; phenomenal practice in the dynamic now; and building the OD professional the future.
Our work resulted in a deeper understanding of the landscape and climate of OD in the NHS. We created a blueprint for OD practice which incorporates Diagnostic, Dialogic and an emergent category of Dynamic OD into a new architecture of OD for the NHS. We revealed that strength is the core of phenomenal OD practice in the dynamic space and developed a route for the OD professionals of the future to find their way to a new way of working that will meet the ongoing changing needs of the NHS.
The research programme concluded that working in multiple interdependent complex adaptive systems will be the new normal for OD practitioners in the future NHS. To succeed they will need to stretch into unexplored areas of practice and find or create micro-communities of learning to shape and strengthen their presence. The process of co-operative inquiry itself created collaborative behaviours and as such there should be support for OD practitioners across the NHS to come together and carry out inquiries into their own practice and continually build and rebuild themselves
On the security of mobile sensors
PhD ThesisThe age of sensor technology is upon us. Sensor-rich mobile devices
are ubiquitous. Smart-phones, tablets, and wearables are increasingly
equipped with sensors such as GPS, accelerometer, Near Field Communication
(NFC), and ambient sensors. Data provided by such sensors, combined
with the fast-growing computational capabilities on mobile platforms,
offer richer and more personalised apps. However, these sensors
introduce new security challenges to the users, and make sensor management
more complicated.
In this PhD thesis, we contribute to the field of mobile sensor security by
investigating a wide spectrum of open problems in this field covering attacks
and defences, standardisation and industrial approaches, and human
dimensions. We study the problems in detail and propose solutions.
First, we propose âTap-Tap and Payâ (TTP), a sensor-based protocol to
prevent the Mafia attack in NFC payment. The Mafia attack is a special
type of Man-In-The-Middle attack which charges the user for something
more expensive than what she intends to pay by relaying transactions
to a remote payment terminal. In TTP, a user initiates the payment by
physically tapping her mobile phone against the reader. We observe that
this tapping causes transient vibrations at both devices which are measurable
by the embedded accelerometers. Our observations indicate that
these sensor measurements are closely correlated within the same tapping,
and different if obtained from different tapping events. By comparing the
similarity between the two measurements, the bank can distinguish the
Mafia fraud apart from a legitimate NFC transaction. The experimental
results and the user feedback suggest the practical feasibility of TTP. As
compared with previous sensor-based solutions, ours is the only one that
works even when the attacker and the user are in nearby locations or share
similar ambient environments. Second, we demonstrate an in-app attack based on a real world problem
in contactless payment known as the card collision or card clash. A card
collision happens when more than one card (or NFC-enabled device) are
presented to the payment terminalâs field, and the terminal does not know
which card to choose. By performing experiments, we observe that the
implementation of contactless terminals in practice matches neither EMV
nor ISO standards (the two primary standards for smart card payment)
on card collision. Based on this inconsistency, we propose âNFC Payment
Spyâ, a malicious app that tracks the userâs contactless payment transactions.
This app, running on a smart phone, simulates a card which
requests the payment information (amount, time, etc.) from the terminal.
When the phone and the card are both presented to a contactless
terminal (given that many people use mobile case wallets to travel light
and keep wallet essentials close to hand), our app can effectively win the
race condition over the card. This attack is the first privacy attack on
contactless payments based on the problem of card collision. By showing
the feasibility of this attack, we raise awareness of privacy and security
issues in contactless payment protocols and implementation, specifically
in the presence of new technologies for payment such as mobile platforms.
Third, we show that, apart from attacking mobile devices by having access
to the sensors through native apps, we can also perform sensor-based
attacks via mobile browsers. We examine multiple browsers on Android
and iOS platforms and study their policies in granting permissions to
JavaScript code with respect to access to motion and orientation sensor
data. Based on our observations, we identify multiple vulnerabilities,
and propose âTouchSignaturesâ and âPINLogger.jsâ, two novel attacks in
which malicious JavaScript code listens to such sensor data measurements.
We demonstrate that, despite the much lower sampling rate (comparing to
a native app), a remote attacker is able to learn sensitive user information
such as physical activities, phone call timing, touch actions (tap, scroll,
hold, zoom), and PINs based on these sensor data. This is the first report
of such a JavaScript-based attack. We disclosed the above vulnerability to
the community and major mobile browser vendors classified the problem
as high-risk and fixed it accordingly.
Finally, we investigate human dimensions in the problem of sensor management.
Although different types of attacks via sensors have been known for many years, the problem of data leakage caused by sensors has remained
unsolved. While working with W3C and browser vendors to fix
the identified problem, we came to appreciate the complexity of this problem
in practice and the challenge of balancing security, usability, and functionality.
We believe a major reason for this is that users are not fully
aware of these sensors and the associated risks to their privacy and security.
Therefore, we study user understanding of mobile sensors, specifically
their risk perceptions. This is the only research to date that studies risk
perceptions for a comprehensive list of mobile sensors (25 in total). We
interview multiple participants from a range of backgrounds by providing
them with multiple self-declared questionnaires. The results indicate that
people in general do not have a good understanding of the complexities
of these sensors; hence making security judgements about these sensors
is not easy for them. We discuss how this observation, along with other
factors, renders many academic and industry solutions ineffective. This
makes the security and privacy issues of mobile sensors and other sensorenabled
technologies an important topic to be investigated further
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