The depth of working fluid level of an oil well is one of the critical parameters that reveal the condition of down-hole environment. It should be measured periodically and accurately to stabilize the usual operation of pumping units. Acoustic method is currently the most common and most effective measurement method. This paper discuss a kind of working fluid level measuring equipment, which is...

Numerous studies have found that working memory capacity and perceptual speed predict variation in fluid intelligence. Within the cognitive ageing literature, perceptual speed accounts for substantial ageing variance in working memory capacity and fluid intelligence. However, within young adults, the interrelationships among these three abilities are less clear. The current work investigated th...

Article history: Received 12 December 2011 Received in revised form 14 March 2012 Accepted 10 May 2012 Available online 6 June 2012 This study explored the controversy surrounding working memory: whether it is a unitary system providing general purpose resources or a more differentiated system with domainspecific sub-components. A total of 348 participants completed a set of 6workingmemory task...

The paper presents two useful extensions of the incremental SVM in the context of online learning. An online support vector data description algorithm enables application of the online paradigm to unsupervised learning. Furthermore, online learning can be used in the large-scale classification problems to limit the memory requirements for storage of the kernel matrix. The proposed algorithms ar...

OBJECTIVES The purpose of the present study was to evaluate the effect of modified Widman flap (MWF) surgery (as a periodontal treatment procedure) on maximum bite force (MBF; as an indicator of patient function). MATERIALS AND METHODS In this clinical trial, 24 patients were examined for their MBF before and at one, four and eight weeks after their MWF surgery. These recordings along with th...

We report findings regarding otolaryngologist-confirmed rhinitis, current exposure to MWF aerosols, fungi, and endotoxins for workers in a plant manufacturing automobile piston rings. Questionnaire data showed that 61.5% of 187 workers exhibited rhinitis-related symptoms. Rhinitis was confirmed in 99 of 115 workers whom were medically examined. Otolaryngologist-confirmed rhinitis was present in...

The noise reduction performance of the Generalized Sidelobe Canceller (GSC) depends on the validity of a priori assumptions about the signal model, whereas the recently developed Multi-channel Wiener Filter (MWF) techniques do not, hence, their potential benefit. However, both techniques rely on a speech detection algorithm. In this paper, we analyze the average effect of speech detection error...

Metalworking fluid (MWF) aerosols are associated with respiratory disorders including asthma and hypersensitivity pneumonitis. The aims of this study were to describe exposure to inhalable MWF aerosols and volatile compounds in machine shops, to estimate the influence of important determinants of exposure and to compare different sampling techniques for MWF aerosols. Personal full-shift air sam...

BACKGROUND This study used data from a large UK outbreak investigation, to develop and validate a new case definition for hypersensitivity pneumonitis due to metalworking fluid exposure (MWF-HP). METHODS The clinical data from all workers with suspected MWF-HP were reviewed by an experienced panel of clinicians. A new MWF-HP Score was then developed to match the "gold standard" clinical opini...