Abstract-Recommendersystems have been used tremendously academically and commercially, recommendations generated by these systems aim to offer relevant interesting items to users. Several approaches have been suggested for providing users with recommendations using their rating history, most of these approaches suffer from new user problem (cold-start) which is the initial lack of items ratings. In this paper we suggest utilizing new user demographic data to provide recommendations instead of using rating history to avoid cold-start problem. We present a framework for evaluating the usage of different demographic attributes, such as age, gender, and occupation, for recommendation generation. Experiments are executed using MovieLens dataset to evaluate the performance of the proposed framework.
New back-coating formulations containing new flame-retardant systems were prepared and applied on cotton textile samples. The flammability properties of cotton samples were improved sharply by applying the new back-coating formulations. The mechanical properties of cotton samples was totally destroyed when using the flame retardant A6 (chloro dimalonylurea phosphine oxide). By using the new back coatings B11 ((A6) chloro dimalonylurea phosphine oxide 30% with sodium carbonate 20%) and B12 ((A 6) chloro dimalonylurea phosphine oxide 20% with sodium carbonate 30%) the mechanical properties and also the flammability properties of cotton samples have been improved. The thermal analysis techniques give a fast and good indication about the expected flammability properties of back-coated cotton samples.
Project management is vital for software project success. Project Management Body of Knowledge (PMBOK), CMMI for Development (CMMI-DEV), and other software project management models and practices established to assist software organizations, each of these models offers diverse focal points. Combined effective software project management practices remain a challenge to software organizations. In striving to raise the likelihood of software project success, this paper introduces a framework for software project management effectiveness which integrated a set of software project management practices based on the PMBOK guide processes, CMMI-DEV processes, and management areas that influence a software project. The proposed framework called 4PTRB which includes people, process, product, project, technology, risk, and business management areas. The 4PTRB software project management framework provides a whole comprehensive view to help software project managers to improve their project management effectiveness. The framework is validated by conducting a web-based survey of software professional practitioners around the world. A statistical analysis of twenty software projects has been conducted as a case study thereafter, spanning small to large development projects. The consistency of the case study and survey results shows the power of the 4PTRB framework as an inclusive software project management framework.
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