BACKGROUND Beef cows herd accounts for 70% of the total energy used in the beef production system. However, there are still limited studies regarding improvement of production efficiency in this category, mainly in developing countries and in tropical areas. One of the limiting factors is the difficulty to obtain reliable estimates of weight variation in mature cows. This occurs due to the inte...

Since the beginning of the discipline, eLearning has been about innovation. New software, systems, contents and tools are being created and experimented with and in constant evolution. But when systems, contents and tools become successful and part of the regular infrastructure of educational institutions, interoperability becomes an issue. Systems that are consolidated and regularly used need ...

The present work is aimed at studying the adsorption capacity of powdered Fuller’s earth for the removal of ferri/ferrous impurities found in commercial grade sodium sulphide. The latter is not suitable for the manufacture of pharmaceutical grade chemicals and dye chemicals. The author has carried out experiments taking different dosage of powdered Fuller’s earth as an adsorbent in the aqueous ...

Recent years have witnessed the explosion of online social networks (OSNs). They provide powerful IT-innovations for online social activities such as organizing contacts, publishing contents, and sharing interests between friends who may never meet before. As more and more people become the active users of online social networks, one may ponder questions such as: (1) Do OSNs indeed improve our ...

Cultivation of the postgraduate creativity is the core content of postgraduate education. The reformation of postgraduate curriculums should lay stress on cultivating of innovation ability as the main purpose, update the educational concepts, reinforce teaching reforms, optimize the contents of curriculum structure, and carry out a great diversity of teaching organizational modes. Studies on co...

We illustrate the use of functional system speci cations and their re nement in the development of system components by a simple case study The development includes the modular speci cation re nement and veri cation of system components We start the development with an informal description of the tasks of the case study and then step by step carry out the tasks formally The informal requirement...

The paper draws on the i-Treasures EU project which adopts cutting-edge sensors and ICT technologies to sustain Intangible Cultural Heritage (ICH) learning and transmission. It highlights how some of the main educational challenges that are characteristic of this peculiar field have been addressed in the project by relying on consolidated Technology Enhanced Learning (TEL) practices and related...

The aim of this paper is presenting the modules of the Adaptive Educational Hypermedia System PCMAT, responsible for the recommendation of learning objects. PCMAT is an online collaborative learning platform with a constructivist approach, which assesses the user’s knowledge and presents contents and activities adapted to the characteristics and learning style of students of mathematics in basi...

In the context of exploring educational hypermedia on the World Wide Web, this paper presents a history visualization that helps learners reorganize explored contents to find what Web sites they should visit next. Learning-by-exploration is discussed as it relates to educational hypermedia, including the "Get Lost in Hyperspace" problem, learning support approaches, and current work on hypermed...