For video broadcasting applications in a wireless environment, layered transmission is an effective approach to support heterogeneous receivers with varying bandwidth requirements. There are several important issues that need to be addressed for such layered video broadcasting systems. At the session level, it is not clear how to allocate bandwidth resources among competing video sessions. For ...

Superposition is a powerful program modularization and structuring method for developing parallel and distributed systems by adding new functionality to an algorithm while preserving the original computation The superposition method will thus structure the distributed algorithm in a number of mechanisms on top of the original computation In this paper the derivation using the super position met...

Digital provenance describes the ancestry or history of a digital object. Most existing provenance systems, however, operate at only one level of abstraction: the system call layer, a workflow specification, or the high-level constructs of a particular application. The provenance collectable in each of these layers is different, and all of it can be important. Single-layer systems fail to accou...

Abstract Environmental risks are one of the greatest threats in twenty-first century. Especially last years, cascading impacts and associated with such events have received great attention as economic losses consequences mounted their wake. As concerns about these ripple effects rising, strategies to prevent manage indirect urgent demand. However, currently barely considered most countries can ...

Thickness mode piezoelectric micro-electromechanical system (MEMS) ultrasound transducers, operating in the 50-75 MHz range, have been fabricated using a composite sol gel technique in combination with wet etching. The composite sol gel technique involves producing a PZT powder/sol composite slurry, which when spun down yields films a few micrometers thick. Repeated layering, and infiltration, ...

Vibracoring is a subsurface sediment acquisition (sediment coring) technique (Pierce and Howard, 1969; Howard and Frey, 1975; dreher et al., 2008) that returns sediment preserved within its stratigraphic and sedimentologic context. This process (see appendix 1) generates a continuous, contiguous sediment sample at a point by vibrating an aluminum core barrel vertically into the sediment (fig. 1...

In this paper, we introduce a novel high bit rate LSB Picture information concealing system. The fundamental thought of the proposed LSB computation is information installing that causes negligible implanting contortion of the host picture. Utilizing the proposed two-stage result, information concealing bits are inserted into higher LSB layers, resulting in expanded vigor against clamor expansi...

Three-dimensional welding is investigated as a rapid prototyping technique for the production of real Inetallic parts using gas metal arc welding principles. A high speed machine vision system is used to study the correlation between droplet transfer parameters and resultant weld penetration characteristics. Experimental work is conducted to determine how droplet transfer frequency, droplet siz...

Cross layering, the disregard of the well established layered architecture, attract current investigations in protocol design. This report gives a short overview about recent trends. We will examine possible concepts of cross layering, their problems in general as well as their chances based on an example.