let $mathcal{a}$ be a banach algebra and $mathcal{m}$ be a banach $mathcal{a}$-bimodule. we say that a linear mapping $delta:mathcal{a} rightarrow mathcal{m}$ is a generalized $sigma$-derivation whenever there exists a $sigma$-derivation $d:mathcal{a} rightarrow mathcal{m}$ such that $delta(ab) = delta(a)sigma(b) + sigma(a)d(b)$, for all $a,b in mathcal{a}$. giving some facts concerning general...

Streams are appearing more and more often on the Web in sites that distribute and present information in real-time streams. We anticipate a rapidly growing need of mashing up this streaming information with more static one. While best practices for linking static data on the Web were published and facilitate the mash up of static information published on the Web, streams were neglected. In this...

In this study the Mantel-Haenszel procedure, widely used in studies for identifying differential item functioning, is proposed as an alternative to the delta-plot method and applied in a test-equating context for flagging common items that behave differentially across cohorts of examinees. The Mantel-Haenszel procedure has the advantage of conditioning on ability when making comparisons of perf...

The following article presents a Mash-up Personal Learning Environment called ReMashed that recommends items from the emerging information of a Learning Network. In ReMashed users can specify certain Web 2.0 services and combine them in a Mash-Up Personal Learning Environment. The users can rate information from an emerging amount of Web 2.0 information of a Learning Network and train a recomme...

This paper describes a fast harmonic estimation, referred to Delta Adjustment (DA), using a low resolution pitch. The presented DA method is based on modification of the Generalized Dual Excitation (GDE) technique [1] which was proposed to improve speech enhancement performance. We introduce the GDE technique and modify it to be suitable for low bit rate harmonic coding that uses only an intege...

The objective of this paper is to demonstrate the use of Six Sigma Methodologies in order to reduce the level of defects at company XYZ. Moreover, the purpose of the study was to review the current film coating operation at XYZ in order to determine the sources of the high number of defects in the final product. Six Sigma DMAIC methodologies were used to find the root cause of the high number o...

One of the factors limiting the performance of continuous-time sigma-delta modulators (CTSDM) is clock jitter. This jitter can be classified as synchronous and accumulated/longterm jitter. A clock that is derived from a phase-lock loop (PLL) contains both types of jitter. In this paper, we present a framework that can be used to obtain the output spectrum in the presence of jitter, either synch...

The Niger Delta region of Nigeria witnessed a remarkable upsurge in environmental resource crisis as a result of the presence of oil multinationals in the region. The mass media flash before the public a vivid and multi varied images of violent behaviour that characterized social interactions in the region. The youths in the Niger Delta whose occupational aspirations are blocked due to persiste...

Online education has provided good opportunities for educationally disadvantaged people. However, some traditional learning management systems (LMSs), the base systems of online education, had the limitations in offering standardized education for diversified learners with different skills, objectives, abilities, preferences, and backgrounds. In addition, the traditional LMSs, which required a ...

The mash-up remix rose to prominence in the early 2000s, spawning fans, amateur participants, and a small social movement. This paper culturally analyzes the influences on and implications of the mash-up phenomenon. By conducting a close reading of press articles and several interviews and textually analyzing some of the most popular and critically acclaimed tracks, I argue that the mash-up is ...