Java Applets for teaching quantum mechanics: Particle in a well

These Java Applets help to illustrate some of the difficult to grasp concepts of quantum mechanics. To run this Applet, use the 'Download as zip files' option. Make sure you extract the files first, then double click on the .html file to run the Applet. These are released as open access resources for the purpose of testing, and are to be deployed at the users own risk.

INFO6003 (2013) Data Exfiltration -- Papers

This is a fun paper about data exfiltration. It's suggested reading, I'd like you to try and grasp how difficult the problem is why looking at one 'creative" attack. The second paper is a technical approach, only for the people seriously interested in this topic.

The Role of Kinaesthetic Motor Imagery in Promoting Activation of the Lumbrical Muscles in the Hemiparetic Hand: a Randomised Controlled Study

The objective of the investigation who gave as result this work was to investigate the effectiveness of kinaesthetic motor imagery in the activation of the hemiplegic hand muscles following stroke. The experiment consisted of two random groups. Movements were measured after treatment. The participants were ten patients with hemiplegic hands (men who mean age was 74.4 years; mean time since stroke 3.05 months). All patients received three sessions of physical treatment based on an identical treatment protocol. Five patients were randomly assigned to an experimental group practising kinaesthetic motor imagery of a grasp using the 'lumbrical action' (experimental group). The others five (control group) followed a relaxation script. All the patients were then asked to grasp an object using the 'lumbrical action'. The grasps were recorded using an optoelectronic motion capture system. The magnitude of the extension of the index finger and the correlation of the angular displacement of the proximal phalangeal joints and the metacarpophalangeal joints were calculated. The movement time for the whole grip was calculated. The experimental group demonstrated higher extension in the index finger (p = < 0.01) and they had a higher correlation coefficient (0.99) than the control group (0.77) for the displacement of the proximal interphalangeal joint and the metacarpophalangeal joints. The movement time for the experimental group was faster, although the difference was not significant.

El Course Experience Questionnaire (CEQ): aproximació a un in-dicador de qualitat del sistema universitari australià

The Course Experience Questionnaire is one of the instruments designed to appraise the quality of the university education, which applies in a global way to the Australian universities, public as well as private. It is a indicator of the courses that they are imparted at the university from the point of view of the student. The present article studies the historical evolution, the structure and the functioning of this questionnaire in order to grasp the positive aspects that it brings to the analysis of the quality of the university system

The construction of national identity as a developmental process from childhood to adolescence in Catalonia

La idea que per entendre alguna cosa hem d'entendre el procés pel qual s'ha produït va ser assumida des de l'origen de l'estudi "La construcció de la identitat nacional com a procés de desenvolupament des de la infància a l'adolescència a Catalunya". Per tal d'estudiar el procés de desenvolupament relacionat amb la construcció de la identitat nacional, no és suficient considerar-lo en el seu context social, sinó que és necessari considerar la seva construcció social. Tres objectius principals van orientar el nostre estudi . Primer, indagar si els processos de categorització, identificació, coneixement, imatge, avaluació i afecte són també elements implicats en la construcció de la identitat nacional des de la infància a l'adolescència. Segon investigar el procés de desenvolupament d'aquests elements des dels 6 anys fins als 15 anys per contribuir amb dades a I'explicació sobre com es desenvolupa del coneixement social. Tres són les explicacions principals; la primera que es basa en processos cognitius d'inclusió-decentració; la segona, si aquest desenvolupament es dóna en cercles concèntrics des de I'interior (contextos quotidians) fins a l'exterior (amb intercanvis més amples i una educació formal envers la vida social); i la tercera, si el desenvolupament del coneixement social d'allò més immediat i directe es reorganitzat i adquireix nous significats per la integració dels elements més generals i abstractes. Tercer, donat el fet que el 50% de les famílies tenen el català com a llengua materna, hem estudiat la influència de la llengua o llengües utilitzades en el context familiar en el procés de construcció de la identitat nacional. Es va dissenyar una entrevista individual seguint una estructura amb les parts següents: identificació subjectiva i identificació nacional; coneixement dels països; estereotips, avaluació i sentiments, i entorn social. La mostra del present estudi va estar formada per 495 nens i adolescents de 6, 9, 12 i 15 anys d'edat. Es va utilitzar per cada grup un número similar de nens i nenes. La mostra es va dividir en tres grups segons la o les llengües utilitzades pel nen o nena en el seu context familiar. Tres van ser les categones lingüístiques utilitzades: castellà, nens que només utilitzin el castellà a casa; català, nens que només usen el català en el context familiar; i bilingües, nens que utilitzin tots dos idiomes a casa. Aquestes categories lingüístiques s'han utilitzat com a indicador dels contextos familiars. Dues conclusions principals es poden extreure d'aquest estudi. Primer, I'ús de categories nacionals no és una conseqüència del procés cognitiu d'inclusió-decentració ni en cercles concentrics (concret/abstracte). La idea d'un procés del món en paral·lel, d'un coneixement que integra simultàniament creences i sentiments de l'ambient concret o proper i de l'abstracte o llunyà pot explicar millor els nostres resultats. Els nens aprenen i pensen sobre la vida quotidara, les característiques de l'ambient, la informació circulant en el seu entom social i la importància o els diferents nivells de coneixement depenent del context. Els nens integren la informació que està circulant en el seu ambient i construeixen un món que necessàriament no ha de coincidir amb el món deis adults, però que els ajuda a comunicar-se i a entendre les situacions en les quals estan immersos. Els nens més joves són capaços d'utilitzar categories nacionals de manera similar als adolescents. Segon, la identitat nacional a Catalunya es construeix al voltant del nucli de la llengua parlada a casa. A través de tot I'estudi es pot veure un resultat consistent i reiterat. Els infants d'un entom familiar en què s'usa només el castellà s'identifiquen com a pertanyents a tots dos grups nacionals, Espanyol i Català. Els infants d'un entom familiar que utilitzen només el català s'identifiquen com a pertanyents només al grup Català. Aquestes identificacions guien com aquests nens avaluen i senten envers el propi grup nacional i els altres. A més, sembla que el context sòcio-polític és un vehicle important en la transmissió de les estructures de semblances i que I'estructura d'afecte es transmet principalment a través de I'entom familiar.

ARX, model thinking: taxonomy and operativity of an architectural process

The purpose of this work was to establish a taxonomy of hand made model construction as a platform for an approach to project an operative method in architecture. It was therefore studied and catalogued in a systematic approach a broad model production in the work of ARX. A wide range of families and sub-families of models were found, with different purposes according to each phase of development, from searching steps for a new possible configuration to detailed refined decisions. This working method revealed as most relevant characteristics, the grounds for a potential personal reflection and open discussion on project method, its flexibility on space modeling, an accuracy on the representation of real construction situations and its constant and stimulating opening to new suggestions. This research helped on a meta-reflection about this method, having been useful on creating a consciousness of processes that pretend to become an autonomous language, knowledge that might become useful to those who pretend to implement a haptic modus operandi in the work of an architectural project.

Profiles of digital TV adopters in the switchover context in Portugal

In order to conduct a successful transition from analogue terrestrial television to full digital terrestrial television it is essential to identify what are the most significant drivers and barriers for adoption among the impacted population. Also importantly, it is to segment the population according with their attitudes towards digital TV, their awareness about the switchover process and intention of adopting digital TV, among other relevant topics. The tradition of profiles definition based on the adoption and rejection of innovations can be traced back to Beal & Bohlen, who proposed five categories of innovation adopters based on the time of adoption, with significant differences in selected personal and social characteristics: the innovators, the early adopters, the early majority, the majority and non-adopters. Later, Rogers would propose similar categories of adopters that became the standard for years to come: the innovators, the early adopters, the early majority, the late majority and the laggards. While helpful, these traditional innovation adopters’ profiles do not totally grasp the complexities of the adoption of an innovation such as digital TV, particularly in mandatory settings. In this paper we will propose a classification of adopters of digital TV in Portugal, based on the results of one of the four empirical studies of the research project ADOPT-DTV, namely, the quantitative inquiry administered to a representative sample of the Portuguese population. The paper will be concluded with a brief discussion of results and the enumeration of the next steps of the research project.

Il silenzio e l’umanità autentica : antropologia ed etica fra Montaigne e Heidegger

During the long history of Western thought, silence has always represented the main condition for the development of a deep meditation about the Self. Through this activity, which could seem to be in contrast with social life and philosophical praxis, several thinkers have tried to reach the spiritual nature of human beings. However, when they had to assign a foundation to it, the same meditation, which had started from the same bases, brought them to opposite conclusions. The motive for this divergence is grounded on the fact that materiality is not the only component that constitutes silence, since it has indeed a complex nature and so it consists also of an immaterial part. In addition, this inner and more hidden aspect could only be perceived through a direct contact that is rarely and personally achieved. As a consequence of this complexity, beside an interpretation of silence as a manifestation of God’s voice and a proof of the transcendent peculiarity of human beings, another reading has developed along a parallel path. This interpretation has represented silence as an expression of an utterly immanent spirituality that characterizes humanity. Two authors, in particular, can exhibit this frequently forgotten second stream of Western thought that has unceasingly run from Hellenistic age to contemporary culture: they are Michel de Montaigne and Martin Heidegger. This essay seeks to rebuild this long and complex plot of the history of Western thought through the texts’ recourse. At the same time, it seeks to grasp, in the relationship between men and silence, some fundamental prerequisites that could be considered absolutely necessary in order to design an anthropology and, consequently, an ethics with the characteristics of a recovered authenticity. These two renovated categories, according to the immanent feature of silence, have their own justification exclusively in the voice of human conscience and their purpose lies precisely in the relationship with others.

A farmácia e a cosmética no século XIX em Portugal

Os cosméticos sempre estiveram presentes desde os primórdios da Humanidade, existindo actualmente uma enorme panóplia de produtos ao alcance dos consumidores. Desde sempre o homem se preocupou com a sua aparência e para tal utilizou os cosméticos como forma de realçar a sua beleza. Durante o século XIX a área dos cosméticos e da farmácia sofreu uma grande evolução devido à revolução industrial e ao aparecimento de novas tecnologias. No século XIX surgiram pela primeira vez métodos de eliminação de rugas, de embelezamento do rosto e na higiene deu-se importância aos banhos com a criação dos balneários públicos. A crescente procura de beleza levou à criação de produtos cosméticos diversos, alguns dos quais perigosos para a saúde, sendo este um dos pontos a abordar nesta tese. Os cosméticos serão abordados como um bem de luxo num país que vivia em extrema pobreza. Serão abordados outros pontos como a importância de produtos cosméticos estrangeiros e efectuar-se-á uma comparação entre um cosmético actual e um do século XIX. A Farmácia em Portugal sofreu profundas alterações no século XIX. A botica deu lugar à farmácia e a produção de medicamentos que anteriormente era feita artesanalmente, passou a ser feita industrialmente. A extinção das ordens religiosas em Portugal em 1834 foi crucial para o desenvolvimento das farmácias. O encerramento das farmácias dos mosteiros originou uma maior viabilização e abrangência territorial dos estabelecimentos privados. Este foi o momento na história da farmácia em Portugal que levou à formação do associativismo. O avanço da produção científica e da literatura técnico profissional que se verificava por toda a Europa também se repercutiu em Portugal. Como exemplo da Literatura Farmacêutica Portuguesa neste século temos a publicação do Codigo Pharmaceutico lusitano. Com o surgimento da era industrial e consequente aumento dos bens produzidos, aperfeiçoou-se a técnica publicitária que deixou de ser unicamente informativa para ser mais persuasiva e agressiva levando o consumidor a comprar. Com esta tese de mestrado tenta-se demonstrar o impacto da revolução industrial no Farmacêutico em Portugal e avaliar a sua resposta às necessidades de mercado. O profissional de saúde deverá apreender rapidamente conhecimento de modo a não perder a sua identidade.

El sabor de la condena (Homenaje)

Ponce comenta y reflexiona en torno a la quinta novela del escritor Francisco Proaño Arandi, El sabor de la condena, publicada en Quito en 2009 por Editorial El Conejo. Se establecen algunas de las claves que configuran esta historia en la que Proaño vuelve a poner en escena las obsesiones que cruzan por sus otras experiencias novelescas. Los personajes, Javier y Male, se mueven en un juego de signos y símbolos que le permiten al lector acceder al misterio que constituye sus vidas, que es un tejido de interrogantes y apariencias continuas. Como en gran parte de sus ficciones, en esta el mundo está reducido a una casa y a una ciudad enigmática y hechizante como Quito, que vuelve a convertirse en referente central. Proaño, al decir de Ponce, es fiel a su estilo y a esa concepción de lo narrativo que se bate entre lo denso y lo moroso, que en él ya es clásica.

Tras las ruinas del poema: el agotamiento lírico como clave interpretativa en Mordiendo el frío de Edwin Madrid (Crítica)

El autor interpreta el poemario Mordiendo el frío, del ecuatoriano Edwin Madrid. Lo hace a la luz de una afirmación del filósofo Alain Badiou: que el poema actual tiene solo una responsabilidad estética, ya no filosófica. Barreto afirma que Madrid muestra el deslinde entre filosofía y el poema moderno, para ello, se vale del lenguaje coloquial, el humor y la gozosa levedad sexual de Valerio, el personaje poético del libro. Según Barreto, el lenguaje poético, vacío, ya no cataliza la experiencia del sujeto: deviene en pura información. Añade que tal desconfianza en la poesía y el lenguaje líricos constituye una velada crítica a la institucionalización del género. Así, esta obra mostraría el agotamiento lírico de cierta poesía moderna. Barreto sugiere que dicho agotamiento se inserta en las condiciones globalizadas de las sociedades actuales, y que participa de la muerte de la experiencia en el sujeto moderno. Concluye que Madrid no lamenta la ruptura entre filosofía y poesía, por el contrario, busca trazar nuevas sensibilidades, signadas por la cotidianidad posmoderna.

A pattern language for goals

Previous work has established the value of goal-oriented approaches to requirements engineering. Achieving clarity and agreement about stakeholders’ goals and assumptions is critical for building successful software systems and managing their subsequent evolution. In general, this decision-making process requires stakeholders to understand the implications of decisions outside the domains of their own expertise. Hence it is important to support goal negotiation and decision making with description languages that are both precise and expressive, yet easy to grasp. This paper presents work in progress to develop a pattern language for describing goal refinement graphs. The language has a simple graphical notation, which is supported by a prototype editor tool, and a symbolic notation based on modal logic.

Century-of-Information Research (CIR): a strategy for research and innovation in the century of information

More data will be produced in the next five years than in the entire history of human kind, a digital deluge that marks the beginning of the Century of Information. Through a year-long consultation with UK researchers, a coherent strategy has been developed, which will nurture Century-of-Information Research (CIR); it crystallises the ideas developed by the e-Science Directors' Forum Strategy Working Group. This paper is an abridged version of their latest report which can be found at: http://wikis.nesc.ac.uk/escienvoy/Century_of_Information_Research_Strategy which also records the consultation process and the affiliations of the authors. This document is derived from a paper presented at the Oxford e-Research Conference 2008 and takes into account suggestions made in the ensuing panel discussion. The goals of the CIR Strategy are to facilitate the growth of UK research and innovation that is data and computationally intensive and to develop a new culture of 'digital-systems judgement' that will equip research communities, businesses, government and society as a whole, with the skills essential to compete and prosper in the Century of Information. The CIR Strategy identifies a national requirement for a balanced programme of coordination, research, infrastructure, translational investment and education to empower UK researchers, industry, government and society. The Strategy is designed to deliver an environment which meets the needs of UK researchers so that they can respond agilely to challenges, can create knowledge and skills, and can lead new kinds of research. It is a call to action for those engaged in research, those providing data and computational facilities, those governing research and those shaping education policies. The ultimate aim is to help researchers strengthen the international competitiveness of the UK research base and increase its contribution to the economy. The objectives of the Strategy are to better enable UK researchers across all disciplines to contribute world-leading fundamental research; to accelerate the translation of research into practice; and to develop improved capabilities, facilities and context for research and innovation. It envisages a culture that is better able to grasp the opportunities provided by the growing wealth of digital information. Computing has, of course, already become a fundamental tool in all research disciplines. The UK e-Science programme (2001-06)—since emulated internationally—pioneered the invention and use of new research methods, and a new wave of innovations in digital-information technologies which have enabled them. The Strategy argues that the UK must now harness and leverage its own, plus the now global, investment in digital-information technology in order to spread the benefits as widely as possible in research, education, industry and government. Implementing the Strategy would deliver the computational infrastructure and its benefits as envisaged in the Science & Innovation Investment Framework 2004-2014 (July 2004), and in the reports developing those proposals. To achieve this, the Strategy proposes the following actions: support the continuous innovation of digital-information research methods; provide easily used, pervasive and sustained e-Infrastructure for all research; enlarge the productive research community which exploits the new methods efficiently; generate capacity, propagate knowledge and develop skills via new curricula; and develop coordination mechanisms to improve the opportunities for interdisciplinary research and to make digital-infrastructure provision more cost effective. To gain the best value for money strategic coordination is required across a broad spectrum of stakeholders. A coherent strategy is essential in order to establish and sustain the UK as an international leader of well-curated national data assets and computational infrastructure, which is expertly used to shape policy, support decisions, empower researchers and to roll out the results to the wider benefit of society. The value of data as a foundation for wellbeing and a sustainable society must be appreciated; national resources must be more wisely directed to the collection, curation, discovery, widening access, analysis and exploitation of these data. Every researcher must be able to draw on skills, tools and computational resources to develop insights, test hypotheses and translate inventions into productive use, or to extract knowledge in support of governmental decision making. This foundation plus the skills developed will launch significant advances in research, in business, in professional practice and in government with many consequent benefits for UK citizens. The Strategy presented here addresses these complex and interlocking requirements.

Diagonalization and Jordan Normal Form – motivation through Maple

Following an introduction to the diagonalization of matrices, one of the more difficult topics for students to grasp in linear algebra is the concept of Jordan normal form. In this note, we show how the important notions of diagonalization and Jordan normal form can be introduced and developed through the use of the computer algebra package Maple®.

Perceiving time to collision activates the sensorimotor cortex

The survival of many animals hinges upon their ability to avoid collisions with other animals or objects or to precisely control the timing of collisions. Optical expansion provides a compelling impression of object approach and in principle can provide the basis for judgments of time to collision (TTC) [1]. It has been demonstrated that pigeons [2] and houseflies [3] have neural systems that can initiate rapid coordinated actions on the basis of optical expansion. In the case of humans, the linkage between judgments of TTC and coordinated action has not been established at a cortical level. Using functional magnetic resonance imaging (fMRI), we identified superior-parietal and motor-cortex areas that are selectively active during perceptual TTC judgments, some of which are normally involved in producing reach-to-grasp responses. These activations could not be attributed to actual movement of participants. We demonstrate that networks involved in the computational problem of extracting TTC from expansion information have close correspondence with the sensorimotor systems that would be involved in preparing a timed motor response, such as catching a ball or avoiding collision.