Relecture de l'anarchisme classique à partir du concept d'éducationnisme-réalisateur

L’anarchisme vit un renouveau un peu partout sur le globe depuis les années 1990 et la montée du mouvement contre la mondialisation. Cependant pour les chercheurs contemporains, le lien est bien mince entre l’anarchisme du 21e siècle et le mouvement anarchiste du début du 20e siècle. Selon ces chercheurs, l’anarchisme contemporain serait davantage caractérisé par la nature expérimentale de ses stratégies et par son focus sur le moment présent. L’objectif de ce mémoire est de démontrer qu’il est possible de tracer des liens clairs entre les auteurs anarchistes classiques et l’anarchisme contemporain. En effet, certains auteurs classiques de ce courant vivent leur anarchisme dans le moment présent contrairement à ce que laissent entendre implicitement les chercheurs qui se sont penchés sur l’anarchisme contemporain. Nous analysons les cas d’auteurs anarchistes de la première moitié du 20e siècle comme Alexander Berkman, Emma Goldman, Joseph J. Cohen, Albert Libertad, Émile Armand et Rirette Maîtrejean. Une analyse de la colonie libertaire d’Aiglemont complète le tableau. Notre approche centrée sur l’étude des pratiques militantes repose sur trois conceptions idéal-typiques. Nous considérons trois types de pratiques anarchistes : l’action anarchiste de type insurrectionnel, de type syndicaliste et de type éducationnisteréalisateur. Nous concluons que les pratiques du mouvement anarchiste contemporain s’apparentent aux pratiques de certains anarchistes classiques, c’est-à-dire les pratiques de type éducationniste-réalisateur.

O ensino libertário e a relação entre trabalho e educação: algumas reflexões

Um dos principais desafios nos estudos a respeito da pedagogia escolar anarquista consiste, precisamente, em apreender os conteúdos de ensino. Com essa preocupação, este texto tem triplo objetivo: analisar a proposta educativa da instituição a cargo do professor libertário João Penteado, em São Paulo, nas primeiras décadas do século XX; indicar aspectos considerados relevantes relacionados à concepção de educação integral e à forma como o trabalho está presente na organização do ensino; e, por fim, apresentar alguns apontamentos de pesquisa que possam contribuir para sua continuidade e seu aprofundamento. Optou-se por abarcar período relativo a dois momentos de existência da escola dirigida por João Penteado - a Escola Moderna Nº 1 (1912-1919) e a Escola Nova (1920-1923). Entende-se que a cronologia definida consegue abranger a pluralidade de práticas escolares necessárias aos propósitos da análise. A documentação utilizada limita-se basicamente a jornais e demais fontes produzidas e/ou acumuladas nos diferentes períodos de existência da(s) escola(s), em particular, os jornais Boletim da Escola Moderna, Boletim da Escola Nova, Boletim da Academia Saldanha Marinho, O Início, O Iris. No estudo do primeiro período, que coincide com o da Escola Moderna, são também utilizadas notícias publicadas por alguns jornais da imprensa operária e anarquista, como A Lanterna, A Vida e O Amigo do Povo, entre outros.

Catholic worker movement: un análisis desde la acción política no violenta y la lógica transnacional de los movimientos sociales

El Catholic Worker Movement se ha caracterizado por enmarcarse en las dinámicas de movilización social y acción política no violenta, que respondían, desde su creación en 1933, a un conjunto de problemáticas sociales y económicas sobre las cuales la sociedad civil se interesó y dio inicio a su actividad en escenarios de la política doméstica de Estados Unidos. Pese a ser un movimiento que surgió en un contexto nacional con fundamentación religiosa, el CWM alcanzó el desarrollo de lógicas transnacionales que contribuyeron a la defensa de su causa y a la reivindicación de valores y principios que motivarían posteriormente a la búsqueda de recursos para reforzar su lucha. Así, el proceso de evolución del movimiento tomó dirección en torno a fenómenos como la difusión, la adquisición de repertorios de acción colectiva correspondientes a la no violencia, y al aprovechamiento de factores exógenos y endógenos representados en distintas formas de oportunidad política y capacidad organizativa.

Meaning in movement : a gestural design game

This paper describes a design game that we called 'Meaning in Movement'. The purpose was to explore notions of professional dental practice with dental practioners in terms of gestures, actions and movements. The game represents a first step towards involving gestures, actions and movements in a design dialog with practioners for the purpose of designing future interactive systems which are more appropriate to the type of skilful actions and richly structured environments of dentists and dental assistants.

Effect of Pedestrian Movement on MIMO-OFDM Channel Capacity in an Indoor Environment

Effects of pedestrian movement on multiple-input multiple-output orthogonal frequency division multiplexing (MIMO-OFDM) channel capacity have been investigated using experiment and simulation. The experiment was conducted at 5.2 GHz by a MIMO-OFDM packet transmission demonstrator using four transmitters and four receivers built in-house. Geometric optics based ray tracing technique was used to simulate the experimental scenarios. Changes in the channel capacity dynamic range have been analysed for different number of pedestrian (0-3) and antennas (2-4). Measurement and simulation results show that the dynamic range increases with the number of pedestrian and the number of antennas on the transmitter and receiver array.

Variations in MIMO-OFDM channel capacity due to random human movement in an indoor environment

Channel measurements and simulations have been carried out to observe the effects of pedestrian movement on multiple-input multiple-output orthogonal frequency division multiplexing (MIMO-OFDM) channel capacity. An in-house built MIMO-OFDM packet transmission demonstrator equipped with four transmitters and four receivers has been utilized to perform channel measurements at 5.2 GHz. Variations in the channel capacity dynamic range have been analysed for 1 to 10 pedestrians and different antenna arrays (2 × 2, 3 × 3 and 4 × 4). Results show a predicted 5.5 bits/s/Hz and a measured 1.5 bits/s/Hz increment in the capacity dynamic range with the number of pedestrian and the number of antennas in the transmitter and receiver array.

The problem of measurement indeterminacy in complex neurobiological movement systems

In the study of complex neurobiological movement systems, measurement indeterminacy has typically been overcome by imposing artificial modelling constraints to reduce the number of unknowns (e.g., reducing all muscle, bone and ligament forces crossing a joint to a single vector). However, this approach prevents human movement scientists from investigating more fully the role, functionality and ubiquity of coordinative structures or functional motor synergies. Advancements in measurement methods and analysis techniques are required if the contribution of individual component parts or degrees of freedom of these task-specific structural units is to be established, thereby effectively solving the indeterminacy problem by reducing the number of unknowns. A further benefit of establishing more of the unknowns is that human movement scientists will be able to gain greater insight into ubiquitous processes of physical self-organising that underpin the formation of coordinative structures and the confluence of organismic, environmental and task constraints that determine the exact morphology of these special-purpose devices.

Effect of amblyopia on the developmental eye movement test in children

Purpose. To investigate the functional impact of amblyopia in children, the performance of amblyopic and age-matched control children on a clinical test of eye movements was compared. The influence of visual factors on test outcome measures was explored. Methods. Eye movements were assessed with the Developmental Eye Movement (DEM) test, in a group of children with amblyopia (n = 39; age, 9.1 ± 0.9 years) of different causes (infantile esotropia, n = 7; acquired strabismus, n = 10; anisometropia, n = 8; mixed, n = 8; deprivation, n = 6) and in an age-matched control group (n = 42; age, 9.3 ± 0.4 years). LogMAR visual acuity (VA), stereoacuity, and refractive error were also recorded in both groups. Results. No significant difference was found between the amblyopic and age-matched control group for any of the outcome measures of the DEM (vertical time, horizontal time, number of errors and ratio(horizontal time/vertical time)). The DEM measures were not significantly related to VA in either eye, level of binocular function (stereoacuity), history of strabismus, or refractive error. Conclusions. The performance of amblyopic children on the DEM, a commonly used clinical measure of eye movements, has not previously been reported. Under habitual binocular viewing conditions, amblyopia has no effect on DEM outcome scores despite significant impairment of binocular vision and decreased VA in both the better and worse eye.

Modelling water droplet movement on a leaf surface

The central aim for the research undertaken in this PhD thesis is the development of a model for simulating water droplet movement on a leaf surface and to compare the model behavior with experimental observations. A series of five papers has been presented to explain systematically the way in which this droplet modelling work has been realised. Knowing the path of the droplet on the leaf surface is important for understanding how a droplet of water, pesticide, or nutrient will be absorbed through the leaf surface. An important aspect of the research is the generation of a leaf surface representation that acts as the foundation of the droplet model. Initially a laser scanner is used to capture the surface characteristics for two types of leaves in the form of a large scattered data set. After the identification of the leaf surface boundary, a set of internal points is chosen over which a triangulation of the surface is constructed. We present a novel hybrid approach for leaf surface fitting on this triangulation that combines Clough-Tocher (CT) and radial basis function (RBF) methods to achieve a surface with a continuously turning normal. The accuracy of the hybrid technique is assessed using numerical experimentation. The hybrid CT-RBF method is shown to give good representations of Frangipani and Anthurium leaves. Such leaf models facilitate an understanding of plant development and permit the modelling of the interaction of plants with their environment. The motion of a droplet traversing this virtual leaf surface is affected by various forces including gravity, friction and resistance between the surface and the droplet. The innovation of our model is the use of thin-film theory in the context of droplet movement to determine the thickness of the droplet as it moves on the surface. Experimental verification shows that the droplet model captures reality quite well and produces realistic droplet motion on the leaf surface. Most importantly, we observed that the simulated droplet motion follows the contours of the surface and spreads as a thin film. In the future, the model may be applied to determine the path of a droplet of pesticide along a leaf surface before it falls from or comes to a standstill on the surface. It will also be used to study the paths of many droplets of water or pesticide moving and colliding on the surface.

On the use of different spatial reference frames for movement control

Previous work has shown that amplitude and direction are two independently controlled parameters of aimed arm movements, and performance, therefore, suffers when they must be decomposed into Cartesian coordinates. We now compare decomposition into different coordinate systems. Subjects pointed at visual targets in 2-D with a cursor, using a two-axis joystick or two single-axis joysticks. In the latter case, joystick axes were aligned with the subjects’ body axes, were rotated by –45°, or were oblique (i.e., one axis was in an egocentric frame and the other was rotated by –45°). Cursor direction always corresponded to joystick direction. We found that compared with the two-axis joystick, responses with single-axis joysticks were slower and less accurate when the axes were oriented egocentrically; the deficit was even more pronounced when the axes were rotated and was most pronounced when they were oblique. This confirms that decomposition of motor commands is computationally demanding and documents that this demand is lowest for egocentric, higher for rotated, and highest for oblique coordinates. We conclude that most current vehicles use computationally demanding man–machine interfaces.