No description available.

No description available.

The aim of this document is to investigate through industrial design the potential of a high efficiency photovoltaic concentrator theory. The investigation directs a proposed layout for the design of a device, which specifically addresses the incorporation of the concentrator theory into the design of a photovoltaic ????????roof tile????????. The focus of the investigation has been the integration of theoretical constructs and physical realities. The objective is to facilitate this transition from theory to reality: to contribute to the quest of creating viable manufacturable designs for the generation of clean low cost electrical power. The use of a roof tile as the focus of the incorporating device served two purposes. Number one: it provided a sensible, existing platform, which is under utilised, presented potential and fitted within established building practices. It was not the objective of this thesis to argue that tile integration is the best, only or even the most financially viable direction to pursue; it was one option among many. This brings us to the second purpose; the consideration of existing roofing tiles forced the theory to be applied within set limitations, in particular existing size restrictions. The imposition of a framework to work within highlighted the design issues, which would have to be addressed in the actualisation of the theory. The theory????????s broad strategy for economic viability has been to reduce the actual silicone cell content of panel designs by approximately one third. This is achieved by the use of numerically fewer cells in combination with a concentration method, which does not cost more than the savings gained by the use of fewer cells. This document records the design process undertaken and presents the findings so that further development can be undertaken.

Steel plate shear walls have typically been analyzed using quasi static and monotonic pushover analysis; however, dynamic excitations during an earthquake elicit different behaviour from the structure due to the nature of the loading. This report outlines the design and analysis of a steel plate shear wall according to NBCC and S16-09 requirements. For lateral loading, wind and seismic forces are considered. The NBCC recognizes two procedures for determining seismic loading, the equivalent static force procedure and dynamic analysis. An analytical model was created in SAP2000® using capacity design principals and the strip model. The dynamic analysis uses bi-directional tension strips to resist load reversals and was validated against a finite element analysis using ABAQUS®. The dynamic analysis provided an effective means of designing the steel plate shear wall. The equivalent static force procedure resulted in a similar design; however, the structure required stiffening to meet the deflection requirements.

Air is removed from residential buildings for different reasons such as heat, odor, or moisture removal. The air is usually removed with exhaust fans connected to duct work that lead outside the building. At the interface between the ducting and the ambient, there are vent caps that are used to allow air to flow out the building but not into it. These vent caps can significantly contribute to the pressure that the exhaust fan must overcome to remove air from the building, which means the exhaust fan must consume more energy to run. Unfortunately, vent cap performances are not currently evaluated because there is no establish method to test them. For this reason the objective of this research was to develop a vent cap performance evaluation method that may be used for a variety of vent cap types, designs, and sizes. The evaluation method was then implemented to determine the variance among vent cap designs, determine the evaluation method's repeatability, and to create a method to estimate the vent cap's performance at a specific air flow rate. An air flow chamber with an extension arm was used to test the vent caps. The extension arm is U-shaped to allow the adjustment to the three different orientations that are needed by the three vent cap types. The extension arm also has static pressure taps to measure the pressure drop across the vent cap. The pressure drop was also used to calculate a nondimensional parameter known as a loss coefficient to facilitate performance comparison. From this research it was concluded that the evaluation method can be implemented on the three vent cap types and a variety of designs and sizes. The repeatability of the evaluation method was confirmed by comparing two trials for two different products. The evaluation method was used to confirm that the variation in the products is significantly larger than the uncertainty in the measurements, which were 0.0077 in. w.c. for the pressure loss and 0.06 in the loss coefficient. It was also shown that the loss coefficients can be used to estimate the vent caps' pressure drop at high air flow rates.

none

No description available.

The aim of this document is to investigate through industrial design the potential of a high efficiency photovoltaic concentrator theory. The investigation directs a proposed layout for the design of a device, which specifically addresses the incorporation of the concentrator theory into the design of a photovoltaic ????????roof tile????????. The focus of the investigation has been the integration of theoretical constructs and physical realities. The objective is to facilitate this transition from theory to reality: to contribute to the quest of creating viable manufacturable designs for the generation of clean low cost electrical power. The use of a roof tile as the focus of the incorporating device served two purposes. Number one: it provided a sensible, existing platform, which is under utilised, presented potential and fitted within established building practices. It was not the objective of this thesis to argue that tile integration is the best, only or even the most financially viable direction to pursue; it was one option among many. This brings us to the second purpose; the consideration of existing roofing tiles forced the theory to be applied within set limitations, in particular existing size restrictions. The imposition of a framework to work within highlighted the design issues, which would have to be addressed in the actualisation of the theory. The theory????????s broad strategy for economic viability has been to reduce the actual silicone cell content of panel designs by approximately one third. This is achieved by the use of numerically fewer cells in combination with a concentration method, which does not cost more than the savings gained by the use of fewer cells. This document records the design process undertaken and presents the findings so that further development can be undertaken.

abstract: Web applications are ubiquitous. Accessible from almost anywhere, web applications support multiple platforms and can be easily customized. Most people interact with web applications daily for social media, communication, research, purchases, etc. Node.js has gained popularity as a programming language for web applications. A server-side JavaScript implementation, Node.js, allows both the front-end and back-end to be coded in JavaScript. Node.js contains many features such as dynamic inclusion of other modules using a built-in function named require which dynamically locates and loads code. To be effective, web applications must perform actions quickly while avoiding unexpected interruptions. However, dynamically linked libraries can cause delays and thus downtime, because dynamically linked code must load multiple files, often from disk. As loading is one of the slowest operations a computer performs, seeking from disk can have a negative impact on performance which causes the server to feel less responsive for users. Dynamically linked code can also break when the underlying library is updated. Normally, when trying to update a server, developers will use test servers. However, if the developer accidentally updates a library in a dynamically linked system, it may be incompatible with another portion of the program. Statically linking code makes it more reliable and faster (to load) than dynamically linking code. The static linking process varies by programming language. Therefore, different static linkers need to be developed for different languages. This thesis describes the creation of a static linker, called FrozenNode, for the popular back-end web application language, Node.js. FrozenNode resolves Node.js applications into a single file that does not rely on dynamic libraries. FrozenNode was built on top of Closure Compiler to accurately process JavaScript. We found that the resolved application was faster and self-contained yielding significant advantages over the dynamically loaded application. Furthermore, both had the same output. Vulnerabilities in web applications can be found using static analysis tools, however static analysis tools must reason about dynamically linked application. FrozenNode can be used to statically link a Node.js application before being used by a JavaScript static analysis tool. / Dissertation/Thesis / Masters Thesis Computer Science 2018

No description available.