A Personal Learning Environment (PLE) is a mash-up of learning services. It enables students and teachers to assemble a work environment that is adapted to a domain and specific individual needs. In this article, we report on our experiences on using a PLE for Language Learning in five French lectures at the Shanghai Jiao Tong University Continuing Education School. We found that while a PLE ha...

The hue and cry about the stark despoliation of the Niger Delta has been ongoing; and the issues at stake have centered mostly on the gross and glaring underdevelopment in the area despite the vast resources that have accrued to the Nigerian state from the region. Perhaps the most disturbing, is that oil exploration and exploitation in the Niger Delta is carried out without regard to internatio...

The quality standards of the output, the features of delivery and the introduction of new services are becoming the most important factors to success in business performance. In this context, the application of new methodologies is essential to increase the business performance. Six Sigma can give an important solution for those companies that intend to highlight the customer satisfaction focus...

We compute the Bieri-Neumann-Strebel-Renz geometric invariants, Σn, of the lamplighter groups Lm by using the Diestel-Leader graph DL(m,m) to represent the Cayley graph of Lm.

A new methodology for clock-jitter simulation in continuous-time sigma-delta (Σ∆) converters is proposed. This analysis method, based on a previously published method uses a discrete time simulator, more efficient than an analog simulator. Only one sample per output sample is required, which reduces simulation times to a few seconds, even for large simulations. Results will be compared to those...

The importance of Linked Open Data (LOD) has not yet been recognized by ordinary people. As the effort to involve them into LOD activity, we have developed Yokohama Art Spot, a mash-up application on local museum information to demonstrate the value of information sharing and reuse where data from different communities are used together. Thanks to the flexibility of LOD, it provides useful view...

The aim of this article is to present “a closer look” at the management theory of “Six Sigma Quality” and to contrast it with the management theory of Dr. W. Edwards Deming. This paper will offer a perspective that the critical differences between “Six Sigma Quality” and the teachings of Dr. Deming are not technical, but rather philosophical in nature. This explanation briefly compares the tech...

This paper presents a tutorial on delta-sigma fractional-N PLLs for frequency synthesis. The presentation assumes the reader has a working knowledge of integer-N PLLs. It builds on this knowledge by introducing the additional concepts required to understand ΔΣ fractional-N PLLs. After explaining the limitations of integerN PLLs with respect to tuning resolution, the paper introduces the delta-s...

Qingyu Jia 1,2 ID , Wenying Yu 2, Li Zhou 3 and Chenghua Liang 1,* 1 College of Land and Environment, Shenyang Agricultural University, Shenyang 110866, China; [email protected] 2 Institute of Atmospheric Environment, China Meteorological Administration, Shenyang 110166, China; [email protected] 3 Chinese Academy of Meteorological Sciences, China Meteorological Administration, 46 Zhongguancun...