Published near-field analyses of full-scale jet noise are limited, and the application of observed laboratory scale phenomena to full-scale jets is not well understood. To obtain a greater understanding of the connection between radiated noise and source characteristics in full-scale, heated, supersonic jets produced by military aircraft, acoustical measurements were made in the geometric near ...

Students often possess multiple, conflicting misconceptions which may be activated and expressed in different contexts. In this paper, we use a mixed membership model to explore the patterns of misconceptions in introductory physics. Mixed membership models have been widely used for modeling observations that have partial membership in several latent groups. The latent groups in the current stu...

Results The pilot study was successful, with 70% of patients approached across 9 centres agreeing to take part in the RCT, and the full-scale trial has achieved 75% recruitment in 19 centres. A simple six-step model providing a framework for good recruitment practice was developed at the pilot phase and then validated, and tested in the main trial. . The model enabled recruiters to explain the ...

A design procedure for subscale airfoils with full-scale leading edges that exhibit full-scale water droplet impingement characteristics in an incompressible, inviscid  ow is presented. The design procedure uses validated airfoil design,  ow analysis, and water droplet impingement simulation codes to accomplish the task. To identify and isolate important design variables in the design, numero...

Full-path indexing can improve I/O efficiency for workloads that operate on data organized using traditional, hierarchical directories, because data is placed on persistent storage in scan order. Prior results indicate, however, that renames in a local file system with fullpath indexing are prohibitively expensive. This paper shows how to use full-path indexing in a file system to realize fast ...

A project was initiated to investigate concerns regarding the application of duct smoke detectors (ASHRAE RP-1079). The objective of the research was to investigate the effects of driving forces, dilution, aging, smoke stratification, filters, and sample tube efficacy on smoke detector response. As one part of this project, a series of full-scale fire tests were conducted in a ten-story facilit...

Achievements of the East European Socialist countries in computing -although considerableremained little known in the West until recently. Retarded by devastations of war, economic weakness and very different levels of national science, computing ranged „from little to nothing‟ in the 1950-s. However, full-scale collective cooperation with the USSR based on principles of equal rights and mutual...

Since the opening-up of China’s economy, its capital markets have grown fairly rapidly, albeit from a small base. These markets provide a growing source of funds to support China’s economic growth; at the same time, they have become one of the driving forces for a series of important economic and social reforms. These markets have undergone three periods of development over the past three decad...

Learning progressions (LPs) are a recent educational theory pertaining to student modeling. LPs argue that students with equal test scores may nonetheless have different conceptualizations of the material, with varying degrees of maturity. However, there is little empirical validation for LPs. To this end, we mapped two physics LPs (one predefined, one described in the paper) onto the answer ch...

A programme for developing and testing mobile systems for tourists is underway in the Åland Islands. The aim of the programme is to develop, launch in full scale, and test some innovative services. In this paper two of the services are presented and possible testing methods are discussed.