2,101 research outputs found
English in South Asia and Pedagogical Implications
English at present maintains a significant role as a second or foreign language in the region of South Asia as well as globally. In a discussion of this topic, it is important to explore a brief history of the expansion of English and its origins in South Asia. It is also essential to provide a background of South Asian English and its unique linguistic characteristics as well as its use in different contexts of South Asia. The perspectives of linguists and educators who are native to the region of South Asia should be included as much as possible in this research. The most crucial element in this discussion is the various implications of the role of English in South Asia on English language pedagogical practices. The numerous options for how to teach the language and the diverse contexts in which the language may be used have a profound effect on the English language educational approach. These implications lead to examining and suggesting the seemingly most relevant and effective approaches to English language instruction in South Asia. The main question in response to these considerations is what variety of English or instructional model should be taught or used in a South Asian classroom. Based on the diverse cultural context of South Asia and the global state of our world, this research endorses a polymodel of English pedagogy that incorporates the use of an established variety of English primarily for instruction while also exposing students to many more existing varieties that they may encounter as well as the cultures that use them
Pictorial display of materials and processes aids in fabricating complex assemblies
Method uses assembly consisting of single pictorial display showing cutaway view of assembly, subassemblies identified by name and materials, and processes identified by both specification and commercial design. Display is used in engineering, manufacturing, and personnel training
Development of design allowable data for Celion 6000/LARC-160, graphite/polyimide composite laminates
A design allowables test program was conducted on Celion 6000/LARC-160 graphite polyimide composite to establish material performance over a 116 K (-250 F) to 589 K (600 F) temperature range. Tension, compression, in-plane shear and short beam shear properties were determined for uniaxial, quasi-isotropic and + or - 45 deg laminates. Effects of thermal aging and moisture saturation on mechanical properties were also evaluated. Celion 6000/LARC-160 graphite/polyimide can be considered an acceptable material system for structural applications to 589 K (600 F)
Fracture control methods for space vehicles. Volume 2: Assessment of fracture mechanics technology for space shuttle applications
The concepts explored in a state of the art review of those engineering fracture mechanics considered most applicable to the space shuttle vehicle include fracture toughness, precritical flaw growth, failure mechanisms, inspection methods (including proof test logic), and crack growth predictive analysis techniques
Solid biofuel and biogas production from grassland-willow alley cropping systems
PosterWorldwide the demand for renewable energy is rising and biogenic energy carriers play an important role in bioenergy provision. However, increase and intensification of biomass production for energetic use has already shown adverse impacts on agro-ecosystems (e.g., biodiversity losses, nitrate leaching, and erosion). Energy cropping and related conversion systems should be improved in terms of their efficiency and environmental impact in future. Modern agroforestry systems offer an alternative agro-ecological approach to a sustainable intensification of energy crop production.
The present study was part of the joint research project “BEST – Strengthening Bioenergy Regions“ (2010?2014) and analyzed the energetic potential of a young alley cropping system of grassland and fast-growing willows grown on a 3 to 6 year rotation. The study was conducted on an experimental area in Central Germany from 2011–2013. Two different grassland mixtures were established in a split-plot randomized block design with three replications, and intercropped with rows of willows. The woody biomass was converted to wood chips for thermal combustion. For the grassland biomass, three types of energetic conversion were evaluated: integrated generation of solid fuel and biogas from biomass (IFBB), anaerobic digestion and hay combustion. Overall, the three year old agroforestry system achieved a total gross energy yield of 96 MWh ha-1 by applying the IFBB procedure to the understory biomass. Grassland as pure stand achieved 133 MWh ha-1 and a single willow stand achieved 51 MWh ha-1 in 3 years after establishment. In addition, this study investigated the yield development in the alley cropping system and in the pure stands as control during the establishment phase
Renormalisation of the energy-momentum tensor in scalar field theory using the Wilson flow
Talk presented at the 33rd International Symposium on Lattice Field Theory (Lattice 2015) by Susanne EhretA non-perturbative renormalisation prescription for the energy-momentum tensor, based on space-time symmetries along the Wilson flow, has been proposed recently in the context of 4-dimensional gauge theories. We extend this construction to the case of a scalar field theory, and investigate its numerical feasibility by studying Ward identities in 3-dimensional scalar field theory. After introducing the Wilson flow for the scalar field theory we discuss its renormalisation properties and the determination of the renormalisation constants for the energy-momentum tensor
Renormalisation of the scalar energy-momentum tensor with the Wilson flow
Talk presented at the 34th International Symposium on Lattice Field Theory (Lattice 2016) by Susanne EhretThe non-perturbative computation of the energy-momentum tensor can be used to study the scaling behaviour of strongly coupled quantum field theories. The Wilson flow is an essential tool to find a meaningful formulation of the energy-momentum tensor on the lattice. We extend recent studies of the renormalisation of the energy-momentum tensor in four-dimensional gauge theory to the case of a three-dimensional scalar theory to investigate its intrinsic structure and numerical feasibility on a more basic level. In this paper, we discuss translation Ward identities, introduce the Wilson flow for scalar theory, and present our results for the renormalisation constants of the scalar energy-momentum tensor
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