The Land of the English Kin

Twenty-nine studies, covering a wide range of themes, present the most up-to-date thinking on the history, archaeology and toponymy of Anglo-Saxon England, with particular attention to Wessex, in honour of Professor Barbara Yorke. ; Readership: This book will appeal to historians, archaeologists and place-name scholars of the early medieval period and those interested in more specifically in the Anglo-Saxon world and the kingdom of Wessex

Campagnes et stratégies des armées anglo-saxonnes pendant l’époque viking

L’article évalue le fonctionnement des campagnes militaires dans l’Angleterre anglo-saxonne entre le ixe et le xie siècle. Un modèle théorique est d’abord élaboré, qui permet de rendre compte de l’organisation des forces employées lors des campagnes ; puis l’accent est mis sur la portée du commandement et de la répartition des troupes au cours de campagnes dont les stratégies pouvaient être offensives ou défensives, principalement sous les règnes d’Alfred le Grand (871-899) et d’Æthelstan (924-939). Enfin, en se penchant sur la logistique concrète de la guerre à l’époque anglo-saxonne, l’article montre combien les campagnes pouvaient, y compris à ces dates précoces, faire l’objet d’une organisation minutieuse.This article assesses the practice of campaigning in Anglo-Saxon England during the ninth to eleventh centuries. Proposing a theoretical model for the organisation of forces on campaign, the paper attempts to address the significance of leadership and group composition in campaigns using defensive and offensive strategies, specifically during the reign of Alfred the Great (871-899) and Æthelstan (924-939). Also addressing the practical logistics of Anglo-Saxon warfare, the paper shows the attention given to the organisation of campaigning in early England

The Land of the English Kin

Twenty-nine studies, covering a wide range of themes, present the most up-to-date thinking on the history, archaeology and toponymy of Anglo-Saxon England, with particular attention to Wessex, in honour of Professor Barbara Yorke. ; Readership: This book will appeal to historians, archaeologists and place-name scholars of the early medieval period and those interested in more specifically in the Anglo-Saxon world and the kingdom of Wessex

Commercial Modular Aero-Propulsion System Simulation 40k

The Commercial Modular Aero-Propulsion System Simulation 40k (CMAPSS40k) software package is a nonlinear dynamic simulation of a 40,000-pound (approximately equals 178-kN) thrust class commercial turbofan engine, written in the MATLAB/Simulink environment. The model has been tuned to capture the behavior of flight test data, and is capable of running at any point in the flight envelope [up to 40,000 ft (approximately equals 12,200 m) and Mach 0.8]. In addition to the open-loop engine, the simulation includes a controller whose architecture is representative of that found in industry. C-MAPSS40k fills the need for an easy-to-use, realistic, transient simulation of a medium-size commercial turbofan engine with a representative controller. It is a detailed component level model (CLM) written in the industry-standard graphical MATLAB/Simulink environment to allow for easy modification and portability. At the time of this reporting, no other such model exists in the public domain

Adaptive Robotic Chassis (ARC)

The ARC is a width adjusting agricultural robot and accommodates auxiliary functions for supporting crop production and maintenance. Easily interchangeable payloads and components provide a modular solution to perform focused crop surveying functions with the potential for herbicide distribution, weeding, and harvesting while driving through varying crop rows. The potential auxiliary functions will be implemented by future teams with this year\u27s effort being put toward finishing the physical chassis. The final product was successfully designed to weigh approximately 600 pounds targeting rolling speeds of0.90 fps to 2.30 fps with proof of concept shown in testing consisting of chain drive attached to wheels to show speeds are attainable as well as bench tests to show differential control capabilities

A High-Fidelity Simulation of a Generic Commercial Aircraft Engine and Controller

A new high-fidelity simulation of a generic 40,000 lb thrust class commercial turbofan engine with a representative controller, known as CMAPSS40k, has been developed. Based on dynamic flight test data of a highly instrumented engine and previous engine simulations developed at NASA Glenn Research Center, this non-proprietary simulation was created especially for use in the development of new engine control strategies. C-MAPSS40k is a highly detailed, component-level engine model written in MATLAB/Simulink (The MathWorks, Inc.). Because the model is built in Simulink, users have the ability to use any of the MATLAB tools for analysis and control system design. The engine components are modeled in C-code, which is then compiled to allow faster-than-real-time execution. The engine controller is based on common industry architecture and techniques to produce realistic closed-loop transient responses while ensuring that no safety or operability limits are violated. A significant feature not found in other non-proprietary models is the inclusion of transient stall margin debits. These debits provide an accurate accounting of the compressor surge margin, which is critical in the design of an engine controller. This paper discusses the development, characteristics, and capabilities of the C-MAPSS40k simulatio

Toolbox for the Modeling and Analysis of Thermodynamic Systems (T-MATS) User's Guide

The Toolbox for the Modeling and Analysis of Thermodynamic Systems (T-MATS) software package is an open source, MATLABSimulink toolbox (plug in) that can be used by industry professionals and academics for the development of thermodynamic and controls simulations

Propulsion System Simulation Using the Toolbox for the Modeling and Analysis of Thermodynamic System T-MATS

A simulation toolbox has been developed for the creation of both steady-state and dynamic thermodynamic software models. This paper describes the Toolbox for the Modeling and Analysis of Thermodynamic Systems (T-MATS), which combines generic thermodynamic and controls modeling libraries with a numerical iterative solver to create a framework for the development of thermodynamic system simulations, such as gas turbine engines. The objective of this paper is to present an overview of T-MATS, the theory used in the creation of the module sets, and a possible propulsion simulation architecture. A model comparison was conducted by matching steady-state performance results from a T-MATS developed gas turbine simulation to a well-documented steady-state simulation. Transient modeling capabilities are then demonstrated when the steady-state T-MATS model is updated to run dynamically

Patterns of health service use among young people with cerebral palsy in England

© 2021 The Author(s). Background: Although the provision of healthcare for people with cerebral palsy (CP) is typically focussed on childhood, many people with CP require access to services periodically throughout their life. Few studies have examined patterns of health service use among young people with CP in England. Understanding patterns of use may inform future service development. Objective: To describe patterns of visits to rehabilitation and medical professionals among ambulatory young people with CP living in England, and identify factors associated with service use. Methods: Sixty-two young people with CP aged 10–19 years [mean (SD) age 13.7 (2.5) years] in Gross Motor Function Classification System (GMFCS) levels I-III reported visits to a range of health professionals, hospital admissions and visits to the emergency department over a median duration of 34 weeks (min–max: 12–34 weeks). Negative binomial models were used to examine factors associated with number of visits. Results: Physiotherapists were the most commonly used professional, with 67.7% of participants visiting a physiotherapist at least once, followed by dentists (66.1%), general practitioners (48.4%), occupational therapists (40.3%) and orthopaedic surgeons (40.3%). Physiotherapists were also the most frequently visited professional with a total of 473 visits (13.3 visits per person-year). Speech and language therapists (5.0 visits per person-year), occupational therapists (4.5 visits per person-year) and nurses (4.3 per person-year) were the next most frequently visited professionals. Age, GMFCS level, and speech impairment were associated with rate of visits to a physiotherapist. Conclusions: The proportion of young people who visited medical and rehabilitation professionals during the study period varied considerably depending on the profession. Generally, the proportion of young people using services was low. In the context of limited resources, data on service use in combination with data on unmet need, may support the reorganisation of services to maximise benefits to young people with CP.Action Medical Research; Chartered Society of Physiotherapy Charitable Trust; The Henry Smith Charity (GN2340)