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A thin broadband multilayer absorber loaded with fractal frequency selective surface (FSS) by employing micron (80–90 μm) and nano (20–30 nm) sized Ti based Fe3O4 nanoparticles have been presented. The experimentally measured complex permittivity and permeability values have been used for implementation of a two layer absorber in the range of 8.2 to 12.4 GHz. A double layer absorber loaded with Sierpinski...
Easy to fabricate planar micro-wire array printed on multilayer dielectric substrates arranged with the required lattice constant is shown to exhibit microwave plasma frequency. The presented micro-wire array acts as high pass spatial filter having plasma frequency as the cut off frequency with low loss over wide band. The characteristics of near zero ε above the plasma frequency is used to enhance...
Electromagnetic radiations are inevitable part of twenty first century. The major sources of electromagnetic radiations are mobile phones and mobile towers. Enormous increase of mobile phone users cause high intensity electromagnetic radiation. This paper analyzes the effect of electromagnetic radiation on the growth of different seeds and also checks effect of different natural shielding materials...
Blade servers are constantly moving towards higher data rates and smaller form factor resulting in complex routing choices to accommodate various chassis configurations. Flexible printed circuit (FPC) cables or flex cables serve as a good choice for interconnect medium in such densely configured server systems. In this paper, various challenges involved in designing a high speed serial link using...
The development of macroporous PEG-based hydrogel scaffolds for soft tissue implantation was investigated. It is aimed that the incorporation of several types of biofactors, particularly extracellular matrices (e.g., Matrigel and Myogel) into the hydrogel scaffolds will induce the formation of adipoctyes and therefore will have potential in breast reconstruction application. This is due to the promising...
We report on the investigation on mid-infrared AlInSb LEDs with an n-i-p structure. Compared to the conventional AlInSb LEDs with a p-i-n structure, a better current spreading corresponding to a uniform current distribution in the active region is expected in the n-i-p structure because of a high electron mobility in the n-type AlInSb material. The output optical power of laterally injected LEDs were...
In this paper, In this paper, the construction of phantom mimics vessel is presented to diagnose the Deep Vein Thrombosis (DVT). The diagnosis of DVT is commonly used by monitoring the blood velocity and present of thrombus in a vessel from B-mode ultrasound image associated with the application of Doppler ultrasound. Since it is difficult to recognize the vessel condition at the earliest stage of...
Effective robotic grasping and manipulation requires knowledge about the surface properties of an object and the environment in which it is located. Physical contact with materials using tactile sensors can enable the retrieval of detailed information about the material, i.e. compressibility, surface texture and thermal properties. This paper describes a system used to classify a wide range of materials...
Constructive alignment combines constructive learning theories with aligned curriculum to promote deep learning. Using an action research methodology, this work reflects upon twelve iterations, over 6-years, of a project that aimed to implement constructive alignment using portfolio assessment for teaching introductory programming. Student results and staff reflections are used to highlight factors...
Nowadays, Web-based learning become one of the most important components in educational technologies and has been widely employed in both educational and non-educational institutions. However, many of the Web-based learning systems are closed system and use private internal format. The learning materials may be dispersed and stored in database or on the server's file system, therefore the learning...
Many learning analytics techniques to capture the learner's real-time responses are computationally intensive for running on mobile devices. In this paper, we propose a personalized learning platform named the PETAL facilitated by an efficient learning analytics application to detect learners' level of attentiveness and the proximity of their eyes to mobile devices and then alert learners to be more...
Although flipping classroom is not a new idea in education, implementing flipped class is somewhat a new trend. Flipping classrooms involve students in using their textbooks, online materials, and other useful resources before coming to class. Consequently, students can spend valuable class meetings on problem-solving activities instead of lectures. Positive feedback from utilizing the flipped classroom...
There is a high demand from academic centers, business firms and marketplaces for highly qualified expertise in database areas. As a result, it is undoubtedly fundamental for academic researchers in the field of databases and education to conduct more research works so that to enhance teaching, learning, and assessing methods of database courses. This paper describes the salient features of these...
This paper aims to explore the impact of lecture capture technology on lecturers and teaching at an Australian university. The data was collected from lecturers in engineering, management, and nursing disciplines. Results of the survey and interviews indicated conformity with previous studies on the importance of teachers' value beliefs in their effort to integrate educational technology in teaching...
This paper focuses on facility layout design problem in microfluidic device manufacturing. Microfluidics device manufacturing requires exquisite work of operators and relatively much higher material cost than other types of manufacturing. Facility layout problem can directly affect the overall cost of manufacturing, particularly in handling and transport cost. Therefore, the objective of this study...
In this paper, a force/vision control strategy is proposed for the robotic cutting of soft materials. The separation is performed by repeating a series of cuts, called passages, along a deformable three dimensional curve. An image based visual servoing system is proposed to control all six degrees of freedom of the cutting tool. This allows the system to change the cutting depth and angle in response...
Site dependent parameters such as soil resistivity, maximum grid current, fault duration, shock duration, surface layer material resistivity, and grid geometry have substantial impact on the design and performance of an earth grid. The grid geometry, i.e. the area occupied by the grid system, conductor spacing and the depth of burial of earth grid specifically have much impact on the mesh, step, touch...
Rapid advances in technology, economic globalization require engineering education to design itself towards an outcome based education module. This article reviews the current structure of teaching quality evaluation practices conducted in engineering institutes of Pakistan and focuses on the development of a meaningful Systematic Evaluation of Teaching that would generate meaningful feedback for...
This work examined the use of self-made YouTube videos by lecturers in teaching Mathematics. A few studies have emphasized the importance of bringing YouTube in the classroom. A lecturer may use YouTube videos available on Internet or create his own videos as teaching materials. The purpose of this work is to study students' perceptions and preferences between these two options. A sample of 213 first...
Recent research on the impact of educational technology such as lecture capture has paid much attention to the possible effects of using technology in improving student performance. Using a combination of an online questionnaire and focus group interviews involving three different disciplinary areas, this study showed that a majority of respondents agreed that Echo360 generated materials had positive...
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