1,031 research outputs found
Changing Practice in a National Legal Deposit Library
This two-part essay considers how digital culture has influenced ideas about permanence and looks at the change in collecting practice in a legal deposit library. The author asks: how is the idea of permanence, understood in cultural heritage terms, influencing digital culture and thus digital technology? The first part of the essay touches upon the concepts associated with permanence, digital culture, digital technology, social change, and cultural institutions, in relation to collecting digital cultural material. The second part of this essay focuses on the change in collecting practice of the Alexander Turnbull Library (Turnbull Library) at the National Library of New Zealand in developing its heritage collection of electronically published material with the benefit of legal deposit, with a particular focus on the change in practice to include the collection of online publications
Two-Step Injection Method for Collecting Digital Evidence in Digital Forensics
In digital forensic investigations, the investigators take digital evidence from computers, laptops or other electronic goods. There are many complications when a suspect or related person does not want to cooperate or has removed digital evidence. A lot of research has been done with the goal of retrieving data from flash memory or other digital storage media from which the content has been deleted. Unfortunately, such methods cannot guarantee that all data will be recovered. Most data can only be recovered partially and sometimes not perfectly, so that some or all files cannot be opened. This paper proposes the development of a new method for the retrieval of digital evidence called the Two-Step Injection method (TSI). It focuses on the prevention of the loss of digital evidence through the deletion of data by suspects or other parties. The advantage of this method is that the system works in secret and can be combined with other digital evidence applications that already exist, so that the accuracy and completeness of the resulting digital evidence can be improved. An experiment to test the effectiveness of the method was set up. The developed TSI system worked properly and had a 100% success rate
Efficient Queue And Gsi Security Management Framework For Mobile Desktop Grid
Kemajuan dan perkembangan yang amat besar dalam teknologi barangan
pegang-tangan telah membuatkan pihak pengkaji berfikir akan cara untuk menggunakan
kuasa alat-alat mobil dalam bidang arkitek yang begitu luas berhubungan dengan
Penggunaan Komputer Bergrid. Peralatan mobil mempunyai sumber komputer dan
kuasa operasi yang terhad, isu-isu lain yang terbatas dalam persumberan komputer
adalah seperti jaringan terselindung, ketidaksinambungan jaringan yang kerap berlaku,
penggunaan tenaga bateri, sekuriti dan kualiti servis dan lain-lain. Salah satu kajian
pendekatan untuk membangkitkan isu ini ialah bidang arkitek proksi grid yang mobil
dimana, alat-alat mobil berkomunikasi dengan alat servis proksi grid yang
menghantarkan permintaan ke grid komputer bagi pihak alat mobil itu, dengan itu ia
memperolehi kebanyakan daripada kegunaan grid komputer.
Tremendous advancement and growth in the hand-held technology make the
researchers think to utilize the power of mobile devices into the vast architecture of the
Grid Computing hence lead to the new paradigm of mobile grid computing. Mobile
devices are resource limited and have many issues such as computational resources
limitations, network latency, frequent network disconnection, battery power
consumption, security etc. To address these issues, researchers proposed mobile proxy
grid architecture in which mobile devices communicated with grid proxy server which
sends the request to the computational grid on behalf of the mobile device hence gets the
most of the functionality of the grid computing
Changing Practice in a National Legal Deposit Library
This two-part essay considers how digital culture has influenced ideas about permanence and looks at the change in collecting practice in a legal deposit library. The author asks: how is the idea of permanence, understood in cultural heritage terms, influencing digital culture and thus digital technology? The first part of the essay touches upon the concepts associated with permanence, digital culture, digital technology, social change, and cultural institutions, in relation to collecting digital cultural material. The second part of this essay focuses on the change in collecting practice of the Alexander Turnbull Library (Turnbull Library) at the National Library of New Zealand in developing its heritage collection of electronically published material with the benefit of legal deposit, with a particular focus on the change in practice to include the collection of online publications
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Transiently Powered Computers
Demand for compact, easily deployable, energy-efficient computers has driven the development of general-purpose transiently powered computers (TPCs) that lack both batteries and wired power, operating exclusively on energy harvested from their surroundings.
TPCs\u27 dependence solely on transient, harvested power offers several important design-time benefits. For example, omitting batteries saves board space and weight while obviating the need to make devices physically accessible for maintenance. However, transient power may provide an unpredictable supply of energy that makes operation difficult. A predictable energy supply is a key abstraction underlying most electronic designs. TPCs discard this abstraction in favor of opportunistic computation that takes advantage of available resources. A crucial question is how should a software-controlled computing device operate if it depends completely on external entities for power and other resources? The question poses challenges for computation, communication, storage, and other aspects of TPC design.
The main idea of this work is that software techniques can make energy harvesting a practicable form of power supply for electronic devices. Its overarching goal is to facilitate the design and operation of usable TPCs.
This thesis poses a set of challenges that are fundamental to TPCs, then pairs these challenges with approaches that use software techniques to address them. To address the challenge of computing steadily on harvested power, it describes Mementos, an energy-aware state-checkpointing system for TPCs. To address the dependence of opportunistic RF-harvesting TPCs on potentially untrustworthy RFID readers, it describes CCCP, a protocol and system for safely outsourcing data storage to RFID readers that may attempt to tamper with data. Additionally, it describes a simulator that facilitates experimentation with the TPC model, and a prototype computational RFID that implements the TPC model.
To show that TPCs can improve existing electronic devices, this thesis describes applications of TPCs to implantable medical devices (IMDs), a challenging design space in which some battery-constrained devices completely lack protection against radio-based attacks. TPCs can provide security and privacy benefits to IMDs by, for instance, cryptographically authenticating other devices that want to communicate with the IMD before allowing the IMD to use any of its battery power. This thesis describes a simplified IMD that lacks its own radio, saving precious battery energy and therefore size. The simplified IMD instead depends on an RFID-scale TPC for all of its communication functions.
TPCs are a natural area of exploration for future electronic design, given the parallel trends of energy harvesting and miniaturization. This work aims to establish and evaluate basic principles by which TPCs can operate
Multisensor wireless
El presente Trabajo Fin de Master versa sobre el estudio de la técnica, diseño e implementación de un nodo sensor inalámbrico capaz de capturar imagen, sonido, temperatura, humedad y presencia, de forma autónoma en cualquier estancia del hogar. La captura de todo el conjunto de datos que el sensor es capaz de capturar, permitirá, mediante un procesamiento individualizado o combinando los datos de varios senosres, definir la actividad que se está llevando a cabo en la estancia del hogar en la que ha sido instalado. Este nodo sensor también es capaz de enviar los datos capturados a través de un canal de comunicación inalámbrico a un concentrador, el cual se ocupe del tratado de datos o simplemente de almacenarlos. Con este envío de datos se consigue poder tener almacenados estos datos para su posterior consulta, así como poder procesar un conjunto de datos capturados por varios nodos sensores. Este dispositivo cuenta también con cierta capacidad de procesamiento, así como una buena eficiencia energética con el fin de alargar al máximo posible la vida útil del nodo sensor determinada por la capacidad de la batería. Podrán emplearse técnicas de “energy harvesting” con el fin de poder recoger energía del entorno, como por ejemplo de luz solar, para recargar las baterías. La finalidad última de este nodo sensor inalámbrico es la monitorización de la actividad en el hogar de personas enfermas con problemas o trastornos de memoria. Con los datos de esta monitorización se pretende ser capaces de detectar que estos enfermos dejan de realizar ciertos hábitos. También servirá para que los enfermos puedan acceder a los datos almacenados de su actividad diaria. Este Trabajo Fin de Master se enmarca dentro del proyecto de investigación titulado MEMORY LANE en el que participa el grupo de investigación HOWLab de la Universidad de Zaragoza. Este proyecto pretende crear un “life-blog” para personas ancianas susceptibles de padecer problemas de memoria, permitiéndoles acceder al contenido del mismo en función de su contexto
Internet of Things Strategic Research Roadmap
Internet of Things (IoT) is an integrated part of Future Internet including existing and evolving Internet and network developments and could be conceptually defined as a dynamic global network infrastructure with self configuring capabilities based on standard and interoperable communication protocols where physical and virtual “things” have identities, physical attributes, and virtual personalities, use intelligent interfaces, and are seamlessly integrated into the information network
Innovative low power multiradio sensing and control device for non-intrusive occupancy monitoring
New tools and methodologies to reduce the gap between predicted and actual energy performances at the level of buildings and blocks of buildings are in continuous development in academic and industry organizations. The development of Wireless Sensor Networking (WSN) technology plays a core role in this field since their development enables the monitoring and control of application within the building environment. In this paper the development of a low power consumption multiradio and multisensing system to monitor building conditions and enable the interaction of occupants with devices through embedded actuators is described. The device (named NOD) incorporates a 32-bit ARM-Cortex microcontroller, a variety of sensors to monitor the ambient conditions – luminance, temperature, humidity, air quality - and multiple radio interfaces - WiFi/Bluetooth LE/868MHz. The NOD is intended to be used as a desktop device with a dedicated user interface. A description of the system and its features and functionalities is provided
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