BENCHMARKING METODE RANCANG BANGUN WATERFALL DAN PEMODELAN BERBASIS OBJEK

This research is a research Benchmarking Waterfall Design Method and Object-Based Modeling. Software development has many models, software methodologies have evolved from time to time, including the Waterfall approach and the UML (Unified Modeling Language) approach. Waterfall is a software development model that is carried out sequentially and very systematically. Meanwhile, UML is a visual modeling method that serves as a means of designing object-oriented systems. The difference between the two models is that Waterfall is a structured method, while UML is a system analysis method, a representation of the programming method. This study aims to perform a comparison or benchmarking of each of these software models, which can assist in determining the most suitable model for the current software development process. The method used in this research is descriptive quantitative method, which analyzes data by describing or describing the data that has been collected as it is. From the results of this study, it can be concluded that the UML method is most suitable for software development, because UML in terms of development, is a method that has undergone evolution from previous methods, so this method can follow the use of users in designing projects on a medium to large scale. That are relevant to the current development

A Waterfall Model for Providing Professional Development for Elementary School Teachers: A Pilot Project to Implement a Competency-Based Approach

Supporting the professional development of teachers to enhance mathematics learning is an important consideration of global education initiatives. However, designing and implementing professional development depends on the structures in place in different contexts. For instance, some structures involve different roles played by the different actors in the schooling system. Thus, school board consultants, principals, inspectors and teachers might be in charge of providing information, coaching, training or educating teachers. Those policies and practices are key components when designing and implementing professional development for teachers at a large scale. This article presents an initiative supported by UNICEF in Democratic Republic of the Congo (DRC). In 2015, the DRC undertook a transitional approach to school reform by adopting a situation-based approach “Approche par les Situations (APS)” in the elementary school curriculum. An experimental pilot project to improve teaching and learning Mathematics and Language Arts in elementary school was set up. To this end, learning situations were created and 80 teachers were trained in the use of these situations in class using a waterfall model of professional development. The results indicated positive contributions resulting from the teacher-enacted situation-based approach, but also exposed functional problems of implementing a waterfall model to support teachers at a large scale. Our results highlight the challenge of supporting all teachers in a global context

Large Software Implementation Project: A study of software development and project management literature

This study focuses on large scale software delivery, where development is done on top of an existing system or parallel to it. This thesis aims to answer to the question: How to implement a large scale custom solution? Large scale projects take longer than smaller projects to implement and usually they are done in more than in one release. The application’s life-cycle is also planned to last up to decades. Large projects also need special project management skills, executive support, internal investments, strategical vision as well as alignment between IT and business. Large projects are usually complex and have several dependencies. This study also explains what issues projects usually have and what are the constrains of legacy systems and data migration. Different eras of IT systems are also presented as well as reasons why companies should invest to IT solutions. Waterfall model and Agile methodology fundamentals and background are presented shortly. From Agile methodology Scrum and SAFe frameworks are presented as examples. Keywords: Legacy system, Data Migration, Software implementation, project management, COTS, Agile development, Waterfal

Catching up with Method and Process Practice: An Industry-Informed Baseline for Researchers

Software development methods are usually not applied by the book.companies are under pressure to continuously deploy software products that meet market needs and stakeholders\u27 requests. To implement efficient and effective development processes, companies utilize multiple frameworks, methods and practices, and combine these into hybrid methods. A common combination contains a rich management framework to organize and steer projects complemented with a number of smaller practices providing the development teams with tools to complete their tasks. In this paper, based on 732 data points collected through an international survey, we study the software development process use in practice. Our results show that 76.8% of the companies implement hybrid methods.company size as well as the strategy in devising and evolving hybrid methods affect the suitability of the chosen process to reach company or project goals. Our findings show that companies that combine planned improvement programs with process evolution can increase their process\u27 suitability by up to 5%

A Density Spike on Astrophysical Scales from an N-Field Waterfall Transition

Hybrid inflation models are especially interesting as they lead to a spike in the density power spectrum on small scales, compared to the CMB, while also satisfying current bounds on tensor modes. Here we study hybrid inflation with $N$ waterfall fields sharing a global $SO(N)$ symmetry. The inclusion of many waterfall fields has the obvious advantage of avoiding topologically stable defects for $N>3$. We find that it also has another advantage: it is easier to engineer models that can simultaneously (i) be compatible with constraints on the primordial spectral index, which tends to otherwise disfavor hybrid models, and (ii) produce a spike on astrophysically large length scales. The latter may have significant consequences, possibly seeding the formation of astrophysically large black holes. We calculate correlation functions of the time-delay, a measure of density perturbations, produced by the waterfall fields, as a convergent power series in both $1/N$ and the field's correlation function $\Delta(x)$. We show that for large $N$, the two-point function is $\,\propto\Delta^2(|{\bf x}|)/N$ and the three-point function is $<\delta t({\bf x})\,\delta t({\bf y})\,\delta t({\bf 0})>\,\propto\Delta(|{\bf x}-{\bf y}|)\Delta(|{\bf x}|)\Delta(|{\bf y}|)/N^2$. In accordance with the central limit theorem, the density perturbations on the scale of the spike are Gaussian for large $N$ and non-Gaussian for small $N$.Comment: 15 pages in double column format, 6 figures. V2: Further clarifications, updated to coincide with version published in Physics Letters

Is a Rigorous Agile Methodology the Best Development Strategy for Small Scale Tech Startups?

Recently, Agile development processes have become popular in the software development community, and have been shown to be effective in large organizations. However, given that the communication and cooperation dynamics in startup companies are very different from that of larger, more established companies, and the fact that the initial focus of a startup might be significantly different from its ultimate goal, it is questionable whether a rigid process model that works for larger companies is appropriate in tackling the problems faced by a startup. When we scale down even further and observe the small scale startup with only a few members, many of the same problems that Agile methodology sets out to solve do not even exist. Then, for a small scale startup, is it still worth putting the resources into establishing a process model? Do the benefits of adopting an Agile methodology outweigh the opportunity cost of spending the resources elsewhere? This paper examines the advantages and disadvantages of adopting an Agile methodology in a small scale tech startup and compares it to other process models, such as the Waterfall model and Lean Startup. In determining whether a rigorous agile methodology is the best development strategy for small scale tech startups, we consider the metrics of cost, time, quality, and scope in light of the particular needs of small startup organizations, and present a case study of a company that has needed to answer this very question

The Application of Blind Source Separation to Feature Decorrelation and Normalizations

We apply a Blind Source Separation BSS algorithm to the decorrelation of Mel-warped cepstra. The observed cepstra are modeled as a convolutive mixture of independent source cepstra. The algorithm aims to minimize a cross-spectral correlation at different lags to reconstruct the source cepstra. Results show that using "independent" cepstra as features leads to a reduction in the WER.Finally, we present three different enhancements to the BSS algorithm. We also present some results of these deviations of the original algorithm