Physical Sciences and Engineering

Recent climatic changes are posing great threat to natural resources and biodiversity worldwide and the threat is particularly eminent in Sub-Saharan Africa, urging for better adaptation interventions. In turn, in this study, we explored the drought pattern in Sudan and South Sudan for the period between 1961 and 2013. Consistent with several recent studies those characterized drought patterns; we used the Standardized Precipitation-Evapotranspiration Index (SPEI) of drought to explore possible drought events in two countries Sudan and South Sudan over the last 53 years.

The performance of the Dibrugarh University low latitude 3D theoretical model at different geomagnetic activity levels and for intense geomagnetic storms has been investigated. In this model the continuity, momentum and energy balance equations of ion and electron flux along geomagnetic field lines from the Northern to the Southern hemisphere are solved simultaneously. The model is used to simulate electron density at different geomagnetic activity conditions Ap=5, 10, 20.

Remote user authentication is of concern in wireless communication networks. This paper proposes a novel remote user authentication scheme based on Euclidean geometry in conjunction with smart card. The proposed scheme preserves user's anonymity while withstanding the following security breaches: resistance to forgery attacks, resistance to replay attacks, resistance to password guessing attacks. In addition, a user can choose and change his password freely.

Num mundo altamente globalizado, com cenário de rápidas mudanças, cheias de tomadas de decisões num ambiente nebuloso, a função do líder é singular. Um líder que queira ter uma equipe comprometida, com os objetivos e metas da organização, terá que utilizar de ferramentas práticas do coaching para engajar todos da equipe, com isso, estarão motivados para alavancar as ações da organização, podendo aumentar os lucros e perpetuar-se neste cenário altamente competitivo.

O presente trabalho tem como objetivo avaliar responsabilidade na aplicação dos requisitos de segurança do trabalho em altura em instalações elétricas de média tensão, conforme a Norma Regulamentadora nº 35 (NR-35) – Trabalho em altura. Os trabalhos realizados nas instalações elétricas, seja na baixa, média, alta ou extra-alta tensão, tem havido uma evolução com relação à execução das tarefas, para torna-lo mais seguro, não só para o trabalhador, mas também para todos os envolvidos, sendo que nos primórdios quase não existia essa preocupação, o que gerava muitos acidentes de trabalho.

This paper discusses the current process of eviction and resettlement of Khulna railway station remodeling project, and proposes proper compensation guidelines to ensure appellativewellbeing of the evicted slum dwellers and shopkeepers.Both legal and illegal land dwellers get resettled when a project requires land but there is no provision for compensation for illegal land dwellers in resettlement policies of Bangladesh.

An electronic circuit might consist of a CPU, ROM, RAM and other glue logic. VLSI lets IC makers at all of this into one chip. A contrast of Network On Chip’s (NoC’s) structure makes a fitting replacement for System On Chip (SoC) design in designs incorporating large number of processing cores. In NoC the overall power dissipation is due to the interconnection system. The interconnects have become main element in dynamic power dissipation in a NoC design. NoC improves the scalability of SoC and the power efficient of complex SoC compared to other designs.

Virtual Learning Environments (VLEs) Provide online interaction of various kinds which can take place between learners and tutor, including online learning when the student and lecturers are in different places but in the same time. However, the effectiveness of the approach still debated among scholars from different discipline on how this method could improve the Domain of Learning development among student especially in Higher Learning Institution (HLI).

In today’s World, Disciplines that are dealing with Project Management, can plan projects by using planning software based on Critical Path Method with an advanced scheduling & tracking engine. Day by day increase in R&D Projects and their complexity creates a need of single management software in our country. By using Planning Software, commencement & completion dates, resources to be used and their costs can be easily defined and tracked.

We show results from b-learning strategy used to teach volume concept in high school for several geometric figure. We applied a conceptual volume test (pretest) and we found that high percentage of students had several misconception and low knowledge about prism and pyramids. We work with a control group (traditional) and, experimental group (b-learning); this methodology includes conceptual activities and use of Khan academy tool. Population was 50 students divided in two similar groups; distinction gender was no made.