This qualitative research case study examines leadership strategies as a contributing factor in the "band B" rating given to a privately operated Abu Dhabi school and emphasizes three key areas: teacher empowerment, teacher motivation and teacher team-building. The school leadership was interviewed and observed in order to provide material for analysis. What did you find? Subsequently, recommendations were made in each of the three key areas that should contribute to further growth aligned to the Irtiqaa evaluation system. It is hoped that this paper will aid other researchers investigating topics related to the creation of high performing schools in Abu Dhabi.
This paper examines Al Adab Al Sahafi: (Arabic literary journalism) as a possible branch of Anglo- American literary journalism, analyzing extracts from works of Al Jahith, Abu: Hayan Al Tawhedi:, Yacaqub Sanu and Ghassan Kanafany according to the criteria set out by a number of Anglo-American literary journalism scholars such as Thomas Connery, Kevin Kerrane, Ben Yagoda, and Norman Sims. This paper also briefly surveys humor in Al Adab Al Sahafi: to the end of understanding its role at overcoming challenges of limited freedom of expression in the Arab world.
Huthis is an armed group in Yemen which was one of the main actors that participate in the uprisings in 2011. Nowadays, Huthis broken into the presidential palace and threatening the political stability in Yemen by forming and applying their own government for the whole county. If Huthis succeed to gain power in Yemen, this will affect the security status in the region. There are some indications that may increase the chance of Huthis to gain power which will affect the security stability among the Arabian Gulf countries.
Several research studies have been made in order to investigate the effect of replacing a conventional turbine with a turbine-burner which has combustion between its stages. This study aims to investigate the performance and exergetic values of the proposed gas turbine modifications, turbine-burner, afterburner and a combination of both. Using a turbine-burner, there will be an increase in the thrust at a relatively lower fuel consumption rate than afterburners. In order to do the analysis, a selected range of compression ratios as well as flight Mach numbers were tested, i.e. the gas turbine is not a ground based turbojet. Our results are comparable to those obtained in literature.
Triply periodic minimal sheets were created, used as a reinforcement in materials, and modeled using finite element analysis. Hence, the effective Young's and bulk modulus are evaluated and compared with fibers and particulate composites.
A cohesive zone damage-healing model for self-healing materials is presented. The damaged and healing configurations of classical continuum mechanics are extended to self-healing materials. A new physically-based internal crack healing state variable is proposed for describing the healing evolution within the crack cohesive zone. A numerical example is presented to discuss the influence of temperature on healing.
In this paper, new interpenetrating phase composites (IPCs) based on the mathematically-known triply periodic minimal surfaces (TPMS) are proposed. In these IPCs, different TPMS architectures are used as reinforcing solid shells to increase the effective multifunctional properties of IPCs. Several threedimensional representative volume elements (RVEs) are generated and studied using the finite element method in order to predict the effective properties for various TPMS-based IPC architectures. The calculated properties are compared with some analytical bounds and conventional composites. The proposed IPCs have superiority against the conventional composites, and they possess effective properties close to the upper Hashin-Shtrikman bounds.
Unmanned aerial vehicles (UAVs) are experiencing a tremendous development as they are being utilized in a wide range of reconnaissance and surveillance missions. This paper presents the ongoing research project at Khalifa University on the design and development of a fully-autonomous robotic aircraft that aims for combining the advantages of fixed-wing conventional aircrafts and vertical takeoff and landing (VTOL) aircrafts. These, which are known as Hybrid UAVs or fixed-wing VTOL UAVs can perform wider range of missions or same missions with higher performance which further enhances their utilization in military and civil applications. The research project includes designing a novel Hybrid UAV, developing a high-precision nonlinear flight dynamics model, achieving full autonomy and realizing intelligent navigation.
One of the technologies underpinning the future vision of a web as huge database is Linked Data (LD). LD provides structured data over the web that is understandable by machines and connecting resources between different datasets over the web forming a big data graph. Effective Visual Analytics techniques become necessary to efficiently analyze and visualize the desired information from this big graph. In this paper, we are investigating the impact of using semantic web technologies in developing automation visualization process of Visual Analytics techniques. We introduce a promising approach for automatic visualization of queries over LD sets, paving the road for next generation of visual analytics tools for the semantic web.
This paper presents a formal method for verifying several features in Wireless Body Sensor Network (WBSN) at different levels of abstraction. We use the Event-B method to formalize the complex features of WBSN at different levels of abstraction, and then to specify properties about their operation. WBSN are considered complex and sensitive designs as they are used with patients where safety and privacy are major concerns. This makes verifying WBSN using traditional simulation methods insufficient since it is necessary to have great confident in the design before we can have it implemented and used in this critical context. In this paper we introduce a formal model for a biosensor that is used in WBSN, and we identified and proved several safety-critical requirements about its operation.
