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Fish-as-a-Service (FaaS) is a business-to-business model offering monitoring services performed by a biomimetic fishlike drone. FaaS considers environmental, scientific, and business concerns when addressing marine monitoring, providing alternative methodology while preserving ocean resources. The key to FaaS is the ability to provide a low-cost, low-maintenance, high-endurance, agile sensor platform...
Industrial ecology seeks options to lessen the environmental impact of industrial systems, through reducing natural resource use and waste generation, and by emulating the cycles that are utilized in ecosystems and nature. Design facets of energy selection and energy efficiency, which are key parts of Design for Environment and thus important considerations in industrial ecology, are described. The...
This paper presents the design and testing of a low cost ($30 unisolated, $75 isolated) electromyogram (EMG) circuit. The circuit is designed to utilise a Right Leg Driver (RLD) circuit: the RLD removes coupled electromagnetic interference from the subject. The benefit inherent with the use of the RLD is that it removes interference in real time, without attenuating the bio-potential signal. The circuit...
Enabled by modern languages and retargetable compilers, software development is in a virtual “Cambrian explosion” driven by a critical mass of powerfully parameterized libraries; but hardware development practices lag far behind. We hypothesize that existing hardware construction languages (HCLs) and novel hardware compiler frameworks (HCFs) can put hardware development on a similar evolutionary path...
In this paper, a stable operating Voltage-Doubler (VD) PFC converter is designed and verified in real-time environment. The performance of the converter for transient condition is examined. The proposed converter-control system maintains sinusoidal current at input and regulated voltage at output end. A complete set of small-signal transfer functions are derived for all common operating modes of the...
The end of Dennard scaling has led to an increase in demand for energy-efficient custom hardware accelerators, but current hardware design is slow and laborious, partly because each iteration of the compile-run-debug cycle can take hours or even days with existing simulation and emulation platforms. Cyclist is a new emulation platform designed specifically to shorten the total compile-run-debug cycle...
We present the use of a new IDE plugin for introducing students to the analysis of software design. Without a concrete method to evaluate their ideas, designing for modifiability was a challenging topic for our students. Prior work showed that students can quickly learn about dependency graphs and use them to make design decisions. However, students frequently made mistakes creating the graphs and...
A∗STAR Data Analytics Exchange (”A∗DAX”) is a scalable platform built upon open architecture and it is designed to facilitate the secure management and analytics of urban data. In this paper, we introduced A∗DAX-DAT, which is the latest development of A∗DAX. A∗DAX-DAT (or DAT for short) is the analytics component of the A∗DAX Platform. DAT aims to provide advance analytics functionalities to A∗DAX...
In the IP-over-WDM networks, there are the mainly following four reasons for high energy consumption. Firstly, and most importantly, cooling of the IT equipment takes huge chunk from overall energy consumption. Secondly, over provisioning leads to redundant devices at all time. Thirdly, deployed networks are designed without consideration of energy. Lastly, data packet are routed without taking care...
Prof. Edward Crawley has stated what an architecture is through the so-called FCF paradigm: "Architecture [..] consists of: Function, related by Concept, to Form". This definition has the merit to be simple, operative and applicable to all kind of engineered systems. However, by reviewing it thoroughly, we may expose some limitation, especially when trying to set-up a framework for architecture...
During preliminary design sketch phases, the power electronics designer has to propose optimal solutions complying with system level requirements, which are continuously evolving since the global system is not finalized. It is particularly complicated in the cases of wide operating ranges where the optimal design for the most constrained operating point does not necessarily provides the optimal design...
Systems of Systems (SoS) are defined - amongst other distinguishing features - as a collection of component systems that produce results not achievable by the individual systems alone. But SoS is more than just a higher level focus on factors that are primarily concerned with the mechanics of data handling. SoS deals with the process of work-in-progress and how the design drives the implementation...
Security protocols are critical components for the construction of secure and dependable distributed applications, but their implementation is challenging and error prone. Therefore, tools for formal modelling and analysis of security protocols can be potentially very useful to support software engineers. However, despite such tools have been available for a long time, their adoption outside the research...
We present a set of tools for digital design, integration and verification of mixed-signal Application Specific Integrated Circuits (ASIC) developed within our design team. We have chosen Python for the development of the tools. By drawing on Python's features we have developed tools targeting many steps required across a design flow: a) Complex digital blocks are auto-generated, where Python generates,...
In order to achieve high efficiency, IPT systems must work under resonance conditions. Since, the coupling coefficient is low (k<0.5) compared to a transformer, the compensation is done separately in the primary and the secondary sides. However, depending on the system, both systems can alter each other, creating pole-splitting or bifurcations. This paper presents a design criterion to ensure that...
This paper presents the design of an interior permanent magnet synchronous motor (IPMSM) with fractional-slot concentrated winding (FSCW). The study determines the number of poles and slots considering the winding factor and unbalanced magnetic force. Conventional calculation method is used to obtain the initial dimensions and finite element analysis (FEA) is adopted to acquire the performance of...
This paper combines two bodies of engineering education work aimed at improving the undergraduate engineering classroom experience for industrial and mechanical engineering students. The integration of these two bodies of work has led researchers to propose a framework for maximizing undergraduate engineering student motivation, satisfaction, and performance. The “Interact, Cultivate, Deliver” or...
Most senior project based design courses focus on demonstrating that students have shown an ability to design a system, component, or process that meets desired needs within realistic constraints as described in ABET Criterion 3(c). This paper describes an approach that has been used for the past four years in a senior project based design course which embeds these criteria within an entrepreneurial...
Progresses obtained in command and power electronics have increased the technical and economic performances of brushless direct current motors. Consequently, the problem of optimum design and operation of these motors, frequently used for driving small vehicles, is a very present one. Studies presented in literature show that high oscillations of torque occur in these motors in a complete rotation...
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