WAIS Seminar:Secure Multi-Party Computation for the Masses

Speaker(s): Prof. David Evans Organiser: Dr Tim Chown Time: 22/05/2014 10:45-11:45 Location: B53/4025 Abstract Secure multi-party computation enables two (or more) participants to reliably compute a function that depends on both of their inputs, without revealing those inputs to the other party or needing to trust any other party. It could enable two people who meet at a conference to learn who they known in common without revealing any of their other contacts, or allow a pharmaceutical company to determine the correct dosage of a medication based on a patient’s genome without compromising the privacy of the patient. A general solution to this problem has been known since Yao's pioneering work in the 1980s, but only recently has it become conceivable to use this approach in practice. Over the past few years, my research group has worked towards making secure computation practical for real applications. In this talk, I'll provide a brief introduction to secure computation protocols, describe the techniques we have developed to design scalable and efficient protocols, and share some recent results on improving efficiency and how secure computing applications are developed.

"Thematically Analysing Social Network Content During Disasters Through the Lens of the Disaster Management Lifecycle" & "Investigating Similarity Between Privacy Policies of Social Networking Sites as a Precursor for Standardization"

Abstract 1: Social Networks such as Twitter are often used for disseminating and collecting information during natural disasters. The potential for its use in Disaster Management has been acknowledged. However, more nuanced understanding of the communications that take place on social networks are required to more effectively integrate this information into the processes within disaster management. The type and value of information shared should be assessed, determining the benefits and issues, with credibility and reliability as known concerns. Mapping the tweets in relation to the modelled stages of a disaster can be a useful evaluation for determining the benefits/drawbacks of using data from social networks, such as Twitter, in disaster management.A thematic analysis of tweets’ content, language and tone during the UK Storms and Floods 2013/14 was conducted. Manual scripting was used to determine the official sequence of events, and classify the stages of the disaster into the phases of the Disaster Management Lifecycle, to produce a timeline. Twenty- five topics discussed on Twitter emerged, and three key types of tweets, based on the language and tone, were identified. The timeline represents the events of the disaster, according to the Met Office reports, classed into B. Faulkner’s Disaster Management Lifecycle framework. Context is provided when observing the analysed tweets against the timeline. This illustrates a potential basis and benefit for mapping tweets into the Disaster Management Lifecycle phases. Comparing the number of tweets submitted in each month with the timeline, suggests users tweet more as an event heightens and persists. Furthermore, users generally express greater emotion and urgency in their tweets.This paper concludes that the thematic analysis of content on social networks, such as Twitter, can be useful in gaining additional perspectives for disaster management. It demonstrates that mapping tweets into the phases of a Disaster Management Lifecycle model can have benefits in the recovery phase, not just in the response phase, to potentially improve future policies and activities. Abstract2: The current execution of privacy policies, as a mode of communicating information to users, is unsatisfactory. Social networking sites (SNS) exemplify this issue, attracting growing concerns regarding their use of personal data and its effect on user privacy. This demonstrates the need for more informative policies. However, SNS lack the incentives required to improve policies, which is exacerbated by the difficulties of creating a policy that is both concise and compliant. Standardization addresses many of these issues, providing benefits for users and SNS, although it is only possible if policies share attributes which can be standardized. This investigation used thematic analysis and cross- document structure theory, to assess the similarity of attributes between the privacy policies (as available in August 2014), of the six most frequently visited SNS globally. Using the Jaccard similarity coefficient, two types of attribute were measured; the clauses used by SNS and the coverage of forty recommendations made by the UK Information Commissioner’s Office. Analysis showed that whilst similarity in the clauses used was low, similarity in the recommendations covered was high, indicating that SNS use different clauses, but to convey similar information. The analysis also showed that low similarity in the clauses was largely due to differences in semantics, elaboration and functionality between SNS. Therefore, this paper proposes that the policies of SNS already share attributes, indicating the feasibility of standardization and five recommendations are made to begin facilitating this, based on the findings of the investigation.

Psychological intervention in an only multifamily session at an Acute Care Unit of a psychiatric clinic

This article provides an overview of the psychological intervention in a Unit Care of Mental Health. The objectives and therapeutic actions to follow are defined through the participation of an interdisciplinary team and networking; it includes support groups and, especially, the families of patients that suffer a severe mental disorder. The materials and resources used were weekly sessions of one hour and forty minutes, for two years of monitoring (2005-2007). The study population consists of families of patients with different pathologies, which are in the Intensive Care Unit. In terms of design, it is made a qualitativeanalysis of 100 field day formats, and fills a matrix of content analysis. It is reviewed the objectives, the approach Multi-Focus, methodology, used techniques, the procedures developed and the feedback given at each session. The findings from this study show that mental disorders are related to the environment in which the patient is developed and complex social process. They also suggest a greater need for psychiatric patient care and its networks, timely and relevantly. By the other hand, it shows the importance of increasing efforts to make available in the field of mental health brief strategic interventions in interdisciplinary teams, it is appropriate a psycho educational and therapeutic approach in which the actions are coordinated at different levels.

Redes multi-niveles de derechos humanos y defensa de los pueblos indígenas colombianos en escenarios “internacionalizados”

Este artículo busca analizar uno de los múltiples aspectos de la dimensión internacional de las movilizaciones indígenas: la forma como los procesos reivindicativos de las organizaciones indígenas colombianas se insertan en la dinámica global del lobbying internacional de las redes de derechos humanos ante Naciones Unidas. Para ello, nos centraremos en el análisis de la lógica de funcionamiento de los circuitos de derechos humanos en un universo social específico: el medio asociativo francés. Esto nos permitirá llevar a cabo la reconstrucción de algunos perfiles sociales de militantes y juristas que hacen las veces de intermediarios entre organizaciones colombianas y ONG europeas.-----This article seeks to analyze one of the multiple aspects of the international dimension of indigenous congregations: how the claim processes of the Colombian indigenous organizations fit into the global dynamics of international lobbying by human rights networks before the United Nations. For this purpose we shall focus our argument around analyzing the rationale of the way human rights circuits work in a specific social universe: the French associative media. This will allow us to undertake the reconstruction of some of the social profiles of militants and lawyers who act as intermediaries between Colombian organizations and European NGO's.

Sistemas de creencias ambientales : un análisis multi-muestra de estructuras factoriales.

resumen literal de la revista

FACSIMI : Fomento de Aprendizajes Cooperativos con Soporte Informático para la Multi-Interculturalidad.

El objetivo del proyecto es utilizar recursos informáticos para realizar experiencias que complementen, amplíen y enriquezcan las usuales del centro. Está destinado a todos los alumnos, pero se prioriza para los de altas capacidades, alumnos con necesidades educativas especiales asociadas a déficit psíquico y alumnos con necesidad de compensación educativa. Otros objetivos son favorecer la comunicación mediante el uso de elementos verbales, visuales, plásticos sonoros y gestuales; desarrollar la autonomía de los alumnos mediante la iniciación al uso de instrumentos tecnológicos de uso cotidiano; desarrollar la creatividad a partir de las posibilidades estéticas que ofrecen los medios tecnológicos; potenciar la colaboración y la planificación en grupo y el trabajo en equipo; identificar y plantear interrogantes a partir de la experiencia diaria utilizando recursos materiales y colaboraciones de personas del entorno escolar; ampliar la competencia curricular; buscar nuevas soluciones artísticas, científicas y técnicas; y mostrar actitudes de respeto, tolerancia y aceptación positiva de la diversidad. En cuanto a la metodología, las actividades son distintas según el tipo de alumnos a los que se dirigen. Se realiza el Rincón del ordenador en Educación Infantil, Internet para alumnos con altas capacidades, Acercamiento a otras culturas mediante Internet, y Uso de la informática en logopedia. En cuanto a los materiales, se elabora un archivo de las actividades realizadas por el alumnado.

Speaking extra : a resource book of multi-level skills activities.

Este recurso para el profesor se organiza en dieciocho unidades con temas de interés general, cada una de ellas lleva tres actividades para cada uno de los niveles: elemental, intermedio y avanzado. Estas actividades pueden utilizarse como material didáctico adicional y está destinado a jóvenes mayores de dieciséis años y adultos para practicar distintos tipos de conversación: de negociación, persuasión, expresión de la opinión y petición de información.

Film, TV and music : multi-level photocopiable activities for teenagers.

Este recurso para el profesor contiene actividades que abarcan temas de interés para los jóvenes como el cine, la música y la televisión. Proporciona material didáctico adicional, que puede fotocopiarse, para los niveles elemental, intermedio y avanzado.

Reading extra : a resource book of multi-level skills activities.

Este recurso para el profesor se organiza en dieciocho unidades con temas de interés general, cada una de éstas lleva tres actividades para cada uno de los niveles: elemental, intermedio y avanzado. Estas actividades pueden utilizarse como material didáctico adicional al existente y está destinado a estudiantes jóvenes mayores de dieciséis años y adultos.

Pairwork and groupwork : multi-level photocopiable activities for teenagers.

Este recurso se organiza en torno a diecisiete áreas temáticas pertinentes para la vida e intereses de los adolescentes, divididas en más de cincuenta actividades y juegos con distintos niveles, desde el elemental hasta el superior intermedio. Estas actividades adicionales les permitan realizar prácticas de comunicación, en parejas y grupos, e incluyen juegos de mesa, juegos de rol, cuestionarios y resolución de problemas y trabajos.

Teen world : multi-level photocopiable activities for teenagers.

Este recurso se divide en diecisiete temas orientados a adolescentes, con más de cincuenta actividades y juegos de distintos niveles, desde el elemental hasta el intermedio superior. Estas actividades adicionales permiten la lectura, escritura, comprensión y conversación e incluyen juegos de rol, juegos de mesa, concursos y debates.

La Multi Language Learning Awareness y la importancia de su potenciación didáctica en clase de ELE.

Resumen tomado de la publicación

A busca da comunicação na sociedade multi-ecrás : perspectiva ecológica. 'A la búsqueda de la comunicación en una sociedad multipantallas : perspectiva ecológica'.

El artículo forma parte de un monográfico de la revista dedicado a una televisión de calidad.- Resumen tomado parcialmente de la revista

Networking creatiu

Reflexión sobre la creatividad y el Networking como una herramienta para ayudar a las personas y como método de innovación social. Networking creativo nace con el objetivo de ayudar a las personas a difundir su creatividad, y es una organización de eventos estructurado en tres partes para que los participantes sean los protagonistas de su experiencia. Tiene lugar en la ciudad de Barcelona. Estos eventos se realizan para desarrollar una comunidad de personas con mente abierta, para innovar, fomentar la creatividad o dar apoyo a emprendedores. Por tanto, Networking es un concepto basado en las personas, las pasiones y la creatividad. Además, se presenta una reflexión que da respuesta a diferentes cuestiones.

Networking theories by iterative unpacking

Resumen basado en el de la publicaci??n