926 research outputs found
A sociological history of Christian worship
No full textIn this book the 2000-year history of Christian worship is viewed from a sociological perspective. Martin Stringer develops the idea of discourse as a way of understanding the place of Christian worship within its many and diverse social contexts. Beginning with the Biblical material the author provides a broad survey of changes over 2000 years of the Christian church, together with a series of case studies that highlight particular elements of the worship, or specific theoretical applications. Stringer does not simply examine the mainstream traditions of Christian worship in Europe and Byzantium, but also gives space to lesser-known traditions in Armenia, India, Ethiopia and elsewhere. Offering a contribution to the ongoing debate that breaks away from a purely textual or theological study of Christian worship, this book provides a greater understanding of the place of worship in its social and cultural context.--From publisher description
A sociological history of Christian worship
No full textIn this book the 2000 year history of Christian worship is viewed from a sociological perspective. Martin Stringer develops the idea of discourse as a way of understanding the place of Christian worship within its many and diverse social contexts. Beginning with the Biblical material the author provides a broad survey of changes over 2000 years of the Christian church, together with a series of case studies that highlight particular elements of the worship, or specific theoretical applications. Stringer does not simply examine the mainstream traditions of Christian worship in Europe and Byzantium, but also gives space to lesser-known traditions in Armenia, India, Ethiopia and elsewhere. Offering a contribution to the ongoing debate that breaks away from a purely textual or theological study of Christian worship, this book provides a greater understanding of the place of worship in its social and cultural context
A Sociological History of Christian Worship
No full textIn this book the 2000 year history of Christian worship is viewed from a sociological perspective. Martin Stringer develops the idea of discourse as a way of understanding the place of Christian worship within its many and diverse social contexts. Beginning with the Biblical material the author provides a broad survey of changes over 2000 years of the Christian church, together with a series of case studies that highlight particular elements of the worship, or specific theoretical applications. Stringer does not simply examine the mainstream traditions of Christian worship in Europe and Byzantium, but also gives space to lesser-known traditions in Armenia, India, Ethiopia and elsewhere. Offering a contribution to the ongoing debate that breaks away from a purely textual or theological study of Christian worship, this book provides a greater understanding of the place of worship in its social and cultural context.</jats:p
A Strain-Based Health Indicator for the SHM of Skin-to-Stringer Disbond Growth of Composite Stiffened Panels in Fatigue
No full textReal-time Structural Health Monitoring (SHM) of aeronautical structural components is a technology persistently investigated the last years by researchers and engineers to potentially reduce the cost and/or implementation of scheduled maintenance tasks. To this end, various types of sensors have been proposed to serve this role, e.g. piezoelectric, acoustic emission, and strain sensors. In the present paper, a strain-based SHM methodology is proposed for skin/stringer disbond propagation health monitoring. Fiber-optic strain sensors with engraved Bragg gratings are utilized in order to evaluate the propagation of artificially-induced disbonds at single-stringered composite panels. The specimens are subjected to a block loading compression-compression fatigue spectrum. Longitudinal static strains are periodically acquired during quasi-static loadings every 500 cycles. A Health Indicator (HI), based on strains received from the stringer’s feet, is proposed and utilized to monitor the disbond growth. The evolution of this indicator is experimentally monitored throughout the lifespan of the specimens. The present paper verifies and consolidates via actual fatigue experiments the potential of the proposed static-strain based HI developed from numerical data in our previous work.Green Open Access added to TU Delft Institutional Repository ‘You share, we take care!’ – Taverne project https://www.openaccess.nl/en/you-share-we-take-care Otherwise as indicated in the copyright section: the publisher is the copyright holder of this work and the author uses the Dutch legislation to make this work public.Structural Integrity & Composite
A study of Neanderthal physiology, engetics and behaviour
Get PDFThe general context of Neanderthal existence in Europe and Southwest Asia is assessed from a physiological perspective, based on studies of living populations experiencing certain roughly analogous circumstances. Various aspects of the fossil, archaeological, and paleoenvironmental records relevant to the discussion of energy balance among the Neanderthals were investigated. Within living populations exposed to cold climate, subsisting on energy deficient diets, or participating in strenuous exercise regimes, various metabolic and physiological responses are evident. These relate to an attempt to maintain energy balance under such stresses, and are mediated by the action of thyroid hormones. It is proposed that the Neanderthals, who endured similar conditions, must have adapted to a low level of circulating active thyroid hormones in the face of an energy imbalance (negative) and sacrificed linear growth (of the legs/limbs primarily) as an energy sparing mechanism, so that other more essential body functions could be maintained to enable survival. Given that the Neanderthal physique was skeletally robust and highly muscled (and that a significant degree and frequency of trauma is evident) it logical that they were engaging in very specific and stressful activity patterns. The Neanderthal physique would have prohibited certain activities but facilitated others. It is clear that modem athletes who share these attributes take part in power and speed events, involving intermittent bursts of high intensity exercise, rather than more stamina orientated ones. This information is used, in conjunction with archaeological and paleoenvironmental evidence, to develop a theory of the daily subsistence practices of the Neanderthals, involving the ambushing of game in a closed environment. Such start-stop activities in a cold environment would have had a bearing on metabolism and energy balance, but also exerted pressure on thermoregulatory mechanisms. In light of this a new theory is developed to explain the evolution of the Neanderthals' exceptional cranial capacity and morphology. The elongated and unflexed basicranium is proposed to have arisen in order to accommodate an expanded cavernous sinus at the base of the brain. This would have provided a mechanism for regulating brain temperature under oscillating periods of heavy physical exertion and rest in a cold environment. The points outlined here are made with reference to previously suggested notions of ecogeographic patterning of body morphology and differential mobility at the time of the 'transition'. Finally, the aspects of Neanderthal existence discussed are placed in a broad ecological and evolutionary context alongside the contemporaneous Early Anatomically Modem Humans (EAMH)
Damage Diagnostics on Post-buckled Stiffened Panels Utilizing the Digital-Twin Concept
No full textA digital twin representative of a typical composite stiffened panel is utilized to monitor skin-to-stringer disbonds. A validated finite element model of the composite panel estimates the longitudinal strains of the pristine state, at the exact location where integrated fiber Bragg grating sensors are permanently installed. Experimental strains are acquired and compared to those provided by the digital twin in order to reveal the presence of disbonds. The integrated sensor grid is used in a manner that some sensors identify the load acting on the panel, leveraging on the digital twin baseline, whilst the remaining ones are dedicated for diagnostic purposes. Two damaged single-stringer panels are tested under compression-compression fatigue conditions. Static strains are received during quasi-static test intervals among the fatigue cycles. The historical strain data are analyzed in a near real-time manner to detect and localize the induced damage throughout the test span.Green Open Access added to TU Delft Institutional Repository 'You share, we take care!' - Taverne project https://www.openaccess.nl/en/you-share-we-take-care Otherwise as indicated in the copyright section: the publisher is the copyright holder of this work and the author uses the Dutch legislation to make this work public.Structural Integrity & Composite
Correctiemogelijkheden ter bestrijding van nadelige invloeden van propagatie-effecten in een stedelijke omgeving bij satelliet navigatie
No full textIn dit verslag wordt allereerst een schets gegeven van de problemen die naar voren komen bij het gebruik van satellietnavigatiesystemen in een stedelijke omgeving. Naar aanleiding van deze probleembeschrijving wordt een methode behandeld, waarmee volgfouten in de code-synchronisatie als gevolg van signaalreflecties gecorrigeerd kunnen worden. Met behulp van deze correcties kan een code-trackinglus gerealiseerd worden. Deze code-trackinglus is de basis voor een ontvangeropzet die bestand is tegen de nadelige effecten van een stedelijke omgeving op satelliet plaatsbepalingssystemen.Electrical Engineering, Mathematics and Computer ScienceTelecommunicatie- en Verkeersbegeleidingssysteme
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