Modeling and analysis of power processing systems: Feasibility investigation and formulation of a methodology

A review is given of future power processing systems planned for the next 20 years, and the state-of-the-art of power processing design modeling and analysis techniques used to optimize power processing systems. A methodology of modeling and analysis of power processing equipment and systems has been formulated to fulfill future tradeoff studies and optimization requirements. Computer techniques were applied to simulate power processor performance and to optimize the design of power processing equipment. A program plan to systematically develop and apply the tools for power processing systems modeling and analysis is presented so that meaningful results can be obtained each year to aid the power processing system engineer and power processing equipment circuit designers in their conceptual and detail design and analysis tasks

Optimal VIA Placement in Under Filled Embedded Multimode Waveguides

The self-imaging property of multimode waveguides creates a challenging problem when finding the optimal placement position of an out-of-plane coupler for embedded waveguides. This problem is compounded when the waveguides are coupled using a small input such as a vertical cavity surface emitting laser (VCSEL) or a single mode fiber where only some of the modes are generated. When the waveguide system is under filled, the coupling efficiency for the optical vertical interconnect assembly (VIA) can vary by as much as 6.2 dB depending on the length of the proceeding waveguide due to different output fields from the self-imaging property. This requires sweeping each individual VIA over the entire range of possible coupler positions to find the total maximum coupling efficiency. This process increases in complexity when a VIA supports several parallel channels all having a different optical path length. If a VIA can be placed in a calculated position from the end of a terminated embedded waveguide dependent upon the modal structure then blind pick and place methods may be used. The optimal coupler placement was determined based on smallest average VIA attenuation, smallest attenuation variance, and worse-case alignment scenario

Clinical psychologists’ experience of trauma and trauma-related disclosure: perspectives and experiences from the profession

A high percentage of individuals will experience a trauma in their life time. A clinical psychologist’s work is often to provide intervention for those experiencing high levels of distress following a trauma. However, understanding of psychologists’ own experiences of trauma and trauma disclosure within the profession are unknown. This dissertation focuses on gaining deeper understanding of trauma-related experiences, and how clinical psychologists make sense of trauma within the profession. Semi-structured interviews were conducted and data was analysed using Interpretative Phenomenological Analysis (IPA). This study found that trauma of psychologists was rarely spoken about and complex interactions between anticipated, internalised and perceived stigma were evident. Anticipated stigma presented as the most dominant in influencing disclosure of trauma by clinical psychologists. This research recommends psychologists consider their own levels of openness about their personal trauma and experiences of trauma related disclosure. Psychologists need the understanding and support that psychologists offer to their clients, removing stigma and promoting openness in the profession is a vital step to supporting psychologists who have experienced trauma, with the profession as a whole learning from each others’ experiences