Results 141 to 150 of about 80,941 (296)
Effects of winglet on transonic flutter characteristics of a cantilevered twin-engine-transport wing model [PDF]
A transonic model and a low-speed model were flutter tested in the Langley Transonic Dynamics Tunnel at Mach numbers up to 0.90. Transonic flutter boundaries were measured for 10 different model configurations, which included variations in wing fuel ...
Bhatia, K. G. +2 more
core +1 more source
Optimal redesign study of the harm wing [PDF]
, 1984 The purpose of this project was to investigate the use of optimization techniques to improve the flutter margins of the HARM AGM-88A wing. The missile has four cruciform wings, located near mid-fuselage, that are actuated in pairs symmetrically and ...
Mcintosh, S. C., Jr., Weynand, M. E.
core +1 more source
British Educational Research Journal, EarlyView.Abstract Quality in early childhood education and care (ECEC) is a contested concept and has generally been conceptualised by inter‐related indicators such as staff qualifications, educational environment, policy or child‐to‐staff ratios. There has been a more limited emphasis on how young children might perceive and experience quality.
Nikki Fairchild, Éva Mikuska
wiley +1 more source
British Educational Research Journal, EarlyView.Abstract This paper uses empirical data from a longitudinal qualitative study conducted with aspirant teachers in England to propose (re)definitions of the concepts of ‘status’ and ‘safety’ as a framework with which to understand and improve teacher recruitment.
Emily MacLeod
wiley +1 more source
PARS: Programs for Analysis and Resizing of Structures, user manual [PDF]
PARS processors and their use, flutter analysis, sensitivity analysis for stresses, and resizing are presented. Design variable definition and interface with finite element model, static constraints and their derivatives, flutter derivatives, and ...
Haftka, R. T., Prasad, B., Tsach, U.
core +1 more source
British Educational Research Journal, EarlyView.Abstract This study examined teachers' perspectives on how children benefit from time in nature, how disadvantage shapes access and the role of schools in facilitating such access. Drawing on interviews conducted in 2022 with 25 UK primary school teachers who participated in Generation Wild, a nature connection programme for schools in economically ...
Nicola Parkin +6 more
wiley +1 more source
Technique for measuring time-base errors of magnetic instrumentation recorders/reproducers [PDF]
Time-base error analysis of magnetically recorded and played back digital data using tape flutter spectral density and amplitude probability distribution measurements and rms time ...
Chan, R. J.
core +1 more source
Nanomaterial‐based immune therapeutic strategies in neurodegenerative diseases
BMEMat, EarlyView.This review highlights the immunomodulatory potential of nanomaterials (NMs) in treating neurodegenerative diseases (NDs). It focuses on their roles in regulating innate and adaptive immune responses to maintain immune homeostasis. By providing insights into these mechanisms, the review lays the groundwork for innovative NMs therapeutic strategies to ...
Xinru Zhou +6 more
wiley +1 more source
Flutter of panels on discrete flexible supports [PDF]
The supersonic flutter of wide panels on discrete flexible supports is investigated for three different panel-support configurations. The first study examines the effect of support stiffness on the flutter behavior of a specific five-support ...
Stein, M.
core +1 more source
Geological processes shaping freshwater biodiversity: a synthesis of global evidence
Biological Reviews, EarlyView.ABSTRACT Recent genomic data highlight the key roles of geological processes in shaping the diversification and biogeography of freshwater lineages. Specifically, physical processes such as tectonic uplift, erosion, glaciation, lake formation, and sea‐level fluctuation contribute extensively to the evolution of biotic diversity within and among ...
Jonathan M. Waters +3 more
wiley +1 more source