Exploring structure sharing in services and using the principles of product design to conceptualise modular workstations

The object of this thesis is to explore the design requirements of a modular and automated mobile workstation, and conceptualise it by exploring product design principles. During the thesis, a dynamic market survey has been conducted to explore existing competition and understand the user requirements for such a product. A thorough study was conducted to understand the rise and fall of open offices in the professional work environment and its relation to individual productivity. Engineering design principles such as Structure Sharing and Modularisation were effectively explored and utilised during this thesis. Structure sharing as a concept was used to explore sharing that occurs in the organisational structure of an industry providing shared services to the customers. AirBnB, a global shared-hospitality service provider, was used as the primary case-study for this purpose. An approach has been made to understand modularity and inclusive design, and find a common ground to apply the concepts of product development in the field of large-scale distributed construction. The results of this research can now be used for the conceptual design of a workstation for diverse users, by applying structure sharing at an organisational level, as studied for case specific services in this thesis. This design can then be evaluated for resource effectiveness using existing design methodologies or can be used to develop new methodologies

Performance analysis of FSO using relays and spatial diversity under log-normal fading channel

The performance analysis of free space optical communication (FSO) system using relays and spatial diversity at the source is studied in this paper. The effect of atmospheric turbulence and attenuation, caused by different weather conditions and geometric losses, has also been considered for analysis. The exact closed-form expressions are presented for bit error rate (BER) of M-ary quadrature amplitude modulation (M-QAM) technique for multi-hop multiple-input single-output (MISO) FSO system under log-normal fading channel. Furthermore, the link performance of multi-hop MISO and multi-hop single-input and single-output (SISO) FSO systems are compared to the different systems using on-off keying (OOK), repetition codes (RCs) and M-ary pulse amplitude modulation (M-PAM) techniques. A significant performance enhancement in terms of BER analysis and SNR gains is shown for multi-hop MISO and multi-hop SISO FSO systems with M-QAM over other existing systems with different modulation schemes. Moreover, Monte-Carlo simulations are used to validate the accuracy and consistency of the derived analytical results. Numerical results show that M-QAM modulated multi-hop MISO and multi-hop SISO FSO system with relays and spatial diversity outperforms other systems while having the same spectral efficiency of each system.Comment: 4 pages, 4 figures, 4th International Conference on Electrical Energy Systems (ICEES), Feb. 7-9, 2018, SSNCE, Chennai, TN, INDI

Shape Classification Via Contour Matching Using the Perpendicular Distance Functions

We developed a novel shape descriptor for object recognition, matching, registration and analysis of two-dimensional (2-D) binary shape silhouettes. In this method, we compute the perpendicular distance from each point on the object contour to the line passing through the fixed point. The fixed point is the centre of gravity of a shape. As a geometrically invariant feature, we measure the perpendicular distance function for each line that satisfies the centre of gravity of an object and one of the points on the shape contour. In the matching stage, we used principal component analysis concerning the moments of the perpendicular distance function. This method gives an excellent discriminative power, which is demonstrated by excellent retrieval performance that has been experimented on several shape benchmarks, including Kimia silhouettes, MPEG7 data set