This paper compares established Systems Dynamics (SD) models of software projects with models of agile development. A new minimal SIMULINKTM agile project model was created and compared to a Waterfall model of a NASA project. Results are presented to enable project managers to predict the performance of future agile project processes. The model includes the time to generate the requirements and...

A finite length analysis is introduced for irregular repetition slotted ALOHA (IRSA) that enables to accurately estimate its performance in the moderate-to-high packet loss probability regime, i.e., in the so-called waterfall region. The analysis is tailored to the collision channel model, which enables mapping the description of the successive interference cancellation process onto the iterati...

Abstrak Kemajuan Ilmu Pengetahuan dan Teknologi (IPTEK) hendaklah diikuti dengan Iman dan Takwa (IMTAK), sangat disayangkan, jika masih banyak masyarakat yang belum bisa membaca huruf hijaiyah yang merupakan dasar dari Al-Qur’an. Masyarakat sekarang telah disibukkan dengan berbagai aktipitas sehingga mereka sulit untuk belajar dengan Ustad atau Ustadza mengenai huruf hijaiyah. Untuk mengatasi m...

The waterfall transform is a hierarchical segmentation technique based on the watershed transform from the field of mathematical morphology. Watershedbased techniques are useful in numerous fields ranging from image segmentation to cell-and-portal generation for games. The waterfall helps mitigate the problem of over-segmentation that commonly occurs when applying the basic watershed transform....

Since the Agile Manifesto, many organizations have explored agile development methods to replace traditional waterfall development. Interestingly, waterfall remains the most widely used practice, suggesting that there is something missing from the many “flavors” of agile methodologies. We explore seven of the most common practices to explore this, and evaluate each against a series of criteria ...

In this paper, we describe our experiences with student team projects in objectoriented software development. Object-oriented development processes are not as straightforward as, for example, traditional waterfall-like models. In objectoriented development, there is no clear border between analysis, design, and implementation. Students therefore have difficulties deciding on what to do next, ho...

With continuous changes in technology and the project management practices used to deliver successful software projects to the business and users, Information Technology leaders need to optimize and adapt to find more effective management approaches. Understanding the strengths and weaknesses of both the waterfall and agile methodologies in order to choose and blend the characteristics that ali...

Uncoded bit error probability with maximum-likelihood detection and channel capacity is derived for binary signaling on the dual antenna array channel with constrained scattering in the large system limit making use of the replica method. Examples are discussed in case of equal power for all propagation paths. In case of poor scattering (or high load), a waterfall behavior of the uncoded bit er...

BACKGROUND "Waterfall plots" are used to describe changes in tumor size observed in clinical studies. Here we assess criteria for generation of waterfall plots and the impact of measurement error in generating them. METHODS We reviewed published waterfall plots to investigate variability in criteria used to define them. We then compared waterfall plots generated by different observers for 24 ...