............................................................................... . VII Acknowledgement .......................................................................... IX Publications ............................................................................ X List of Figures ........................................................................... XII Chapter 1 Background and Intr...

noise is one of the main parameters to be considered to achieve a healthy indoor ambience in ferries. therefore, the noise standards need to be more specialized and specifically based on real sampled data and case studies. in the present research, the noise levels in a ship, under different working conditions, were sampled and compared with those specified in the new and old standards. an initi...

materials and methods this cross-sectional study was conducted on 200 nurses during 2012. the data-gathering instrument consisted of two parts. the first part consisted of questions on demographic information and the second part was the walton’s quality of work life questionnaire. data were analyzed using the spss software. for statistical analysis t test and one way anova were used. results th...

Accurate and effective voice activity detection (VAD) is a fundamental step for robust speech or speaker recognition. In this study, we proposed a hierarchical framework approach for VAD and speech enhancement. The modified Wiener filter (MWF) approach is utilized for noise reduction in the speech enhancement block. For the feature selection and voting block, several discriminating features wer...

This paper introduces the topic of " Collaborative Distance " within Distributed Collaboration as being an introduction to this Special Issue on Collaborative Working Environments 1 (CWE). It starts in discussing various related concepts, identified during an extensive literature review, on both proximity and distance in distributed collaboration. Then, a Collaborative Distance Framework (CDF) ...

We propose a new approach to commutative watermarkingencryption (CWE). A permutation cipher is used to encrypt the multimedia data, which leaves the global statistics of the multimedia data intact. Therefore, any non-localized watermarking scheme that depends only on global statistics of the multimedia data can be combined with the permutation cipher to form a CWE scheme. We demonstrate this ap...