Traditionally, software design and development has been following the engineering approach as exemplified by the waterfall model, where specifications have to be fully detailed and agreed upon prior to starting the software construction process. Agile software development is a relatively new approach in which specifications are allowed to evolve even after the beginning of the development proce...

Prior to the use of Agile Methodologies in software industry, the software projects were chaotic and unpredictable. As a result the processes which are best suited for well-defined problem domains cannot manage such software projects. It had been seen that with highly detailed user interface designs, specifications and plans, the software developed turned out different from its original intent ...

The Waterfall model has dominated software development for many years, but iteration of processes is catching in. There is now a number of well-established iterative development process models that can be classified according to the levels where iteration is applied. Iteration can improve validation and verification by allowing earlier quality feedback. Moreover, there seems to be a secret marr...

A major drawback when using the watershed transformation as a segmentation tool comes from the over-segmentation of the image. Over-segmentation is produced by the great number of minima embedded in the image or in its gradient. A powerful technique has been designed to suppress over-segmentation by a primary selection of markers pointing out the regions or objects to be segmented in the image....

I n the initial decades of the computer industry, systems were built in isolation. Large problems typically were solved through the development of numerous, stand-alone, vertical solutions. As computer systems started covering progressively larger segments of the problem space, they began to overlap and often failed to integrate. The solution to this problem was part systems engineering, and pa...

If a coronary artery is ligated and the distal end cannulated, blood flows retrograde from the cannula when vented to the atmosphere. By varying the height of the outflow tubing, and thereby changing the outflow pressure, pressure-flow relationships can be constructed. We used this technique in eight dogs to assess the characteristics of blood flow into ischemic myocardium. Above a back pressur...

Controlled laboratory studies of the physical and chemical properties of sea spray aerosol (SSA) must be underpinned by a physically and chemically accurate representation of the bubble-mediated production of nascent SSA particles. Bubble bursting is sensitive to the physicochemical properties of seawater. For a sample of seawater, any important differences in the SSA production mechanism are p...