This paper is concerned with the interactions of δ-shock waves for the Aw-Rascle traffic model with split delta functions. The solutions are obtained constructively when the initial data are three piecewise constant states. The global structure and large time-asymptotic behaviors of the solutions are analyzed case by case. Moreover, it can be found that the Riemann solutions are stable for such...

A fast and accurate technique for modelling and simulation of clock jitter in continuous-time sigma-delta (SD) modulators is introduced. In addition to its high speed compared to the traditional jitter simulation method, the proposed technique is still continuous-time based, which is more convenient than discrete-time based jitter modelling suggested in other publications. The mathematical prin...

This document discusses the characteristics of electrocardiogram (ECG) signals and different front-end approaches for ECG signal acquisition. The tradeoffs between different approaches and the effects on overall system design are discussed. The report also includes descriptions of potential implementations of the front-end architecture using the ADS1258 and ADS1278 and respective noise measurem...

Deltas – landforms created where sediment is deposited at the mouth of a river – bury vast amounts of organic carbon, thereby playing a central role in the biogeochemical carbon and sulphur cycles (Fig. 1). Delta sediments are highly heterogeneous, varying over space and time, with important consequences for the interaction of sediments with biogeochemical processes. Understanding this complexi...

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...