Petri nets are becoming one of the most important mathematical tools in Computer Science. In this paper, we study some mathematical properties of concurrent grammars which are controlled by Petri nets under parallel firing strategies, where transitions of Petri nets fire simultaneously in different modes.We propose a notion of concurrent context-fr

The robustness of the three-level transitionless quantum driving proposed by Giannelli and Arimondo [L. Giannelli and E. Arimondo, Phys.Rev.A89,033419(2014)] is investigated. In the case when the excited state is barely populated during the evolution, its decay rate has little effect on the adiabatic population transfer. However, the dephasing whic

Intestinal helminths and intestinal protozoa infections are one of the leading causes of diseases among young people and adults in the world today. Low socio- economic status, overcrowded areas, poor environmental sanitation, inappropriate garbage disposal, lack access to safe water and unhygienic personal habits are among the factors which contrib

The provision of open spaces within a residential development is often seen as unimportant. The Malaysian Government targeted to provide 2 hectares of open space per 1000 population to be achieved as a developed nation status by the year 2020. This vision can be seen as the Government attempt to ensure the sustainability of open spaces in Malaysia.

Currently, most of the demand for energy relies on petroleum products. Nevertheless, the issues of energy security, economics and environment has led to the breakthrough of biofuel cells (BFCs) technology as one of the promising solution to the problems. However, the performance of BFCs need to be improved in order to compete with the existing tech

أصبح إتباع السنة النبوية مفهوماً مقتبساً من القالب الظاهري للنصوص نأياً عن الاستفادة من مدلولاتها والاستنجاد بعللها ومقاصدها، فصار الإتباع منحصراً في ظواهر الأخبار من حيث تأصيله ومقتصراً عل

الشريعة الإسلامية تتمثل في أوصافٍ لأفعال المكلفين من الأحكام، فالأفعال خاضعة للأحكام من حيث الاعتبار، والأحكام تابعة للأفعال من حيث الاعتداد. وإذا تغيرت الأفعال تتغير الأحكام، وإذا تغيرت ال�

Purpose – The purpose of this paper is to analyse the lecturers’ self-perceived competencies and practices in assessing students. Design/methodology/approach – An Assessment Practices Inventory Modified was administered to a sample of 329 randomly selected lecturers from six universities in Uganda. Factor analysis and multivariate analysis of

Introduction. Serum procalcitonin (PCT) diagnosed sepsis in critically ill patients; however, its prediction for survival is not well established. We evaluated the prognostic value of dynamic changes of PCT in sepsis patients. Methods. A prospective observational study was conducted in adult ICU. Patients with systemic inflammatory response syndrom

This study investigated the factors influencing assessment practices among academic staff in universities, in Uganda. Academic levels, type of the university, specialisation, class size, and assessment-based training were hypothesised as factors influencing the university academic staff’s assessment practices. A purely quantitative approach was a