Workloads and injury risk in Premier League football

The English Premier League is faster and more intensive than ever, requiring an enhanced physical capacity from the players. In addition, the financial rewards for success have never been greater. This has increased the pressure on clubs to produce and develop talented players who can consistently perform under physical stress, whilst remaining injury free. To augment the chance of success, practitioners must prescribe workloads which stimulate positive adaptations, without unduly increasing injury risk. Therefore, the primary aim of this thesis was to understand the relationships between workload and injury in both youth and senior professional football. Chapter 2 investigated the validity, reliability and interchangeability of the systems used to measure workload in this thesis. Chapter 3 determined that the youth and senior squads have different training demands, and were therefore studied separately when identifying the workload-injury relationships. Chapters 4 (youth) & 5 (senior) explored the relative risks associated with given workloads. Both studies found that acute spikes in workload increased the risk of injury; however, this increase could be reduced with progressive increases in the chronic workload. The secondary aim of this thesis was then to determine the effectiveness of informed workload prescription as an injury prevention strategy. By applying the findings from the previous chapters into elite football practice, Chapter 6 found that appropriate workload prescription appears to increase workload tolerance, although it is not sensitive enough to be used as an isolated injury prevention tool

Mothers, Daughters and Cryptophores

This paper explores our particular relation to the maternal figure in terms of cryptonymy (examining words that hide) and cryptophores (bearers of secrets), as defined by Nicholas Abraham and Maria Torok. Secrets play a significant part in consolidating mother-daughter relationships, especially when mediated by some kind of death or disappearance. The secrets these women carry have to be dealt with privately from within the mother-daughter relationship; public confession is not possible. In order to articulate the unspoken, we will perform a dialogic text-with-image work, Repli (fold or small circuit), that which repeatedly provokes a reply. As a methodological tool, our Repli seeks to engage with mothers, and the mothers of mothers. Embraced by this piece, the figure of three grand[m]others makes an indexical link with the lived body through its trace - silhouette, shadow, graph. Writing back and forth, creating a folded structure that recalls the drawing-folding game exquisite corpse, our dialogue, as daughters with mothers, initiates a search for whatever is secreted within these folds. The gap left is an outline of the figure sought. Apprehended by being traced, through drawing and by photographic means, the figure is re-positioned between an originating present and the moment of marking. The m[other] here is performed, not represented, in an act of retrieval. Referencing Anne Brody’s exhibition Lost Mother, which documents the effects of maternal loss on teenage daughters, we acknowledge the possibility also of inherited loss, the gap inherited through one’s mother. In seeking the lost mother an other is evoked, a sort of blueprint that prefigures the mother sought. In this context we explore Pedro Almodóvar’s film Volver, a title that can be translated as to return, like the repressed, and in which the mother is a ghost. Our work will provide a voice for the intensity borne by carrying secrets, the anxiety they create but also the hope, comfort and agency they convey. It will operate as a confession, an acknowledgement that can be maintained, suspended, taken back and forth, folding time and bringing the past and potential futures into a present performance

Reading Hysteria, Between Laughter and Crying

Bowen & Gonzalez present a collaborative performed text, accompanied by projected images and film. The piece explores the relationship between writing and reading, and the role of the image and performativity in relation to the condition known as hysteria

Analysis of a Waveguide-Fed Metasurface Antenna

The metasurface concept has emerged as an advantageous reconfigurable antenna architecture for beam forming and wavefront shaping, with applications that include satellite and terrestrial communications, radar, imaging, and wireless power transfer. The metasurface antenna consists of an array of metamaterial elements distributed over an electrically large structure, each subwavelength in dimension and with subwavelength separation between elements. In the antenna configuration we consider here, the metasurface is excited by the fields from an attached waveguide. Each metamaterial element can be modeled as a polarizable dipole that couples the waveguide mode to radiation modes. Distinct from the phased array and electronically scanned antenna (ESA) architectures, a dynamic metasurface antenna does not require active phase shifters and amplifiers, but rather achieves reconfigurability by shifting the resonance frequency of each individual metamaterial element. Here we derive the basic properties of a one-dimensional waveguide-fed metasurface antenna in the approximation that the metamaterial elements do not perturb the waveguide mode and are non-interacting. We derive analytical approximations for the array factors of the 1D antenna, including the effective polarizabilities needed for amplitude-only, phase-only, and binary constraints. Using full-wave numerical simulations, we confirm the analysis, modeling waveguides with slots or complementary metamaterial elements patterned into one of the surfaces.Comment: Original manuscript as submitted to Physical Review Applied (2017). 14 pages, 14 figure

Antecedentes y avances en aspectos de epidemiologia, diagnóstico y control de la estomatitis vesicular

Microbiólogo (a) Agrícola y Veterinario (a)Pregrad

Y el espacio

Inmersos en una sociedad saturada de información visual, víctimas y participantes de la sobre importancia de la estética, hemos perdido habilidades perceptuales y reducido los esfuerzos para crear espacios que nos permitan una experiencia sensorial completa. Como ocurre en otros campos, el diseño de espacios ha sido, entonces, malentendido y juzgado; reducido a aspectos, que, aun acompañando al propósito del diseño en cuestión, no deben ser considerados como objetivos principales (ej.: decoración). El cumplimiento de los objetivos fundamentales del diseño de espacios se ha visto comprometido. No, este diseño no debe pretender crear una imagen llamativa o atractiva al ojo, debe ser responsable. Por un lado, el concepto “espacio”. A pesar de ser un tema muy discutido a lo largo de la historia en muchos campos, y sin la intención de encontrar una definición universal (consciente de la ardua tarea que ello conllevaría) se entenderá aquí como la realidad física sensible en la que convivimos y con la que nos relacionamos constantemente. Un concepto que carece de significado si no involucra al ser humano. Por otro lado, el diseño. Siendo igualmente difícil de definir, puede, significar una gran variedad de aportaciones: Puede responder a necesidades, cuestionar situaciones, reivindicar valores, explicar, enseñar y mostrar. Teniendo en cuenta, una vez más, que, sin un usuario, no existe. Es por ello necesaria una reflexión que guíe hacia una revalorización de la sensorialidad perteneciente, de forma intrínseca, al diseño de un espacio.Immersed in a society saturated with visual information, victims and participants of the overarching importance of aesthetics, we have lost perceptual abilities and reduced efforts to create spaces that allow us a complete sensory experience. As it happens in other fields, the design of spaces has been, then, misunderstood and judged; reduced to aspects that, even accompanying the purposes of the design in question, should not be considered as main objectives (e.g.: decoration). The fulfilment of the fundamental objectives of the design of spaces has been compromised. No, this design should not intend to create a striking or attractive image to the eye, it must be responsible. On one hand, the concept “space”, in spite of being a very discussed topic throughout history in many fields, and with no intention of finding a universal definition (aware of the arduous task that this entails), it will be understood here as the physical sensitive reality in which we live and with which we constantly interact. A concept that lacks significance if it does not involve the human being. On the other hand, design, being equally difficult to define, can mean a variety of contributions: can respond to needs, question situations, claim values, explain, teach and demonstrate, taking in to account, once again, that without a user, it does not exist. It is then necessary, a reflexion that will guide us towards a revaluation of the sensorial qualities that belong, intrinsically, to the design of space

The Object as Witness

The work we propose to perform focuses on the cellar workspace left by Eleanor Bowen’s father, a landscape archaeologist. Now collapsing, the archive space is both a repository of archaeological material intended for posterity, and also the intimate trace of a life. Victor Burgin cites Bergson’s description of duration as ‘an indeterminate period of lived existence that may expand or contract according to the attention brought to it’. We bring attention to a period of lived existence through the reading of the objects in the cellar. Vladimir Nabokov warns us that there is no possible reading, only re-reading. Psychoanalysis, on the other hand, places emphasis on misreading and takes as its text those things that others discard: dreams, slips of the tongue, forgetting, unintended acts, symptoms. So how is one to read? Reading, whether re-reading or misreading, is an interpretative act. It creates a product that draws on the read, whether aiming to replicate the reading, deduce from it, or improvise around it. It is an act of the mind and the senses. JD Prown asserts that ‘objects created in the past are the only historical occurrences that continue to exist in the present’. This he attributes to the indexical linking of an object with its history. As inheritors, we propose to tell the object’s story, its role (however you read it) as witness

The Comparison Of Dome And HMD Delivery Systems: A Case Study

For effective astronaut training applications, choosing the right display devices to present images is crucial. In order to assess what devices are appropriate, it is important to design a successful virtual environment for a comparison study of the display devices. We present a comprehensive system, a Virtual environment testbed (VET), for the comparison of Dome and Head Mounted Display (HMD) systems on an SGI Onyx workstation. By writing codelets, we allow a variety of virtual scenarios and subjects' information to be loaded without programming or changing the code. This is part of an ongoing research project conducted by the NASA / JSC