Global ETD Search
Search theses and dissertations gathered from participating repositories worldwide. Every result links back to the library that holds it. No account is needed.
Results
Showing 1 to 20 of 42 for “"Minimum power"”.
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User-adaptable and minimum-power thermal comfort control
Thesis (Ph. D.)--Massachusetts Institute of Technology, Dept. of Mechanical Engineering, 1992.
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The Design of Ad Hoc Networks with Minimum Power and Maximum Battery Life
… the terminals in these networks are battery powered and so, to maximise the lifetime of, the network, the power consumption of each node needs to be managed. This thesis studies the optimum design of a multi-hop ad hoc network. Each layer is analysed and cross layering is considered where it …
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Optimal sizing and placement of independent power producers on MV, HV and EHV networks for minimum power line losses using neural networks
… 100 MW. This increased the number of Independent Power Producers (IPPs) seeking connection to the South African electricity transmission system (TS) or distribution system (DS) – which, as a mandatory requirement, are to comply with the minimum technical and design grid connection regulations …
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Optimal sizing and placement of independent power producers on MV, HV and EHV networks for minimum power line losses using neural networks
… 100 MW. This increased the number of Independent Power Producers (IPPs) seeking connection to the South African electricity transmission system (TS) or distribution system (DS) – which, as a mandatory requirement, are to comply with the minimum technical and design grid connection regulations …
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Internal divisions and security cultures: the impact of Turkish membership on the European Union's foreign and security policies
… to those supporting the project of a Global Power Europe, Humanitarian Power Europe and Minimum Power Europe. For its part, Turkey has two security cultures, which I have called “Republican” and “neo- Ottomanist”. This thesis argues that an assessment of Turkey’s impact on the role of the EU …
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Prototype Design for Thermoacoustic Flashover Detector
… from the 3000 Hz tone of smoke detectors. The minimum power input to the device for sound onset is 44 Watts, corresponding to a temperature difference of 150 degrees Celsius at a mean temperature of 225 degrees Celsius across a 2 cm long porous steel wool stack. The temperatures at the hot and …
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Modeling and Control of Multi-Rotor UAVS: Design for Safety and Performance
… i) optimality of the hover solutions in terms of power consumption; ii) stability of the vehicle in different configurations; and iii) controller performance in trajectory tracking. First, this section leads to introducing six different configurations for quadcopters ranking from the most stable …
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A series-stacked architecture with isolated server-to-bus converters for high-efficiency data center power delivery
Series-stacked server power delivery architectures have been proposed recently that can achieve much higher energy efficiency than conventional power delivery architectures. When servers are connected in series, differential power processing (DPP) converters can be used to regulate the server …
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QoS constrained cellular ad hoc augmented networks
… proposed architecture is the QoS constrained minimum-power cellular ad hoc augmented network architecture (QCMP CAHAN). The QCMP CAHAN can find the optimal minimum-power routes under the QoS constraints (bandwidth, packet-delay, or packet-error-rate constraint). The total energy consumed by …
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Design of a Readout Integrated Circuit (ROIC) for Infrared Imaging Applications
… that meets several design objectives, including minimum power, minimum cost, and maximum dynamic range. We start with analog design of different parts of the circuit based upon a bottom-up design discipline. We then validate our design using TSpice simulation and analyzing the time/frequency …
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Energy-efficient analog-to-digital conversion for ultra-wideband radio
… digital circuits in isolation cannot achieve the minimum power consumption. Furthermore, in advanced technologies with significant variation, yield is traditionally achieved only through conservative design and a sacrifice of energy efficiency. In this thesis, these limitations are addressed with …
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Distributed Contention-Free Access for Multi-hop IEEE 802.15.4 Wireless Sensor Networks
The IEEE 802.15.4 standard is a low-power, low-rate MAC/PHY standard that meets most of the stringent requirements of single-hop wireless sensor networks. Sensor networks with nodal populations comprised of thousands of devices have been envisioned in conjunction with environmental, vehicular, and …
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A low power and fast CMOS arithmetic logic unit
This thesis presents the design of a low power and fast Complimentary Metal-Oxide- Semiconductor (CMOS) Arithmetic Logic Unit (ALU). ALU is one of the most important parts of a digital computer which is designed to do the arithmetic and logic operations, including bit shifting operation that need …
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ENERGY-AWARE JOB SCHEDULING AND CONSOLIDATION APPROACHES FOR WORKFLOWS IN CLOUD
… reduce the skyrocketing cost of electricity for powering the data centers, cloud service providers are highly motivated to implement performance guaranteed and cost-effective job schedulers. Many researchers have been focusing on scheduling jobs with high performance, and their primary concern …
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Conceptual Design for a Laminar-Flying-Wing Aircraft
… affecting practical laminar-flow-control suction power requirements; identify a viable basic design specification; and, on the basis of this, an assessment of the fuel efficiency through a detailed conceptual design study. It is shown that there is a minimum power requirement independent of the …
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Model parameter uncertainty and climate change effects in hydropower vulnerability projections
Hydropower is a major source of renewable energy in the Western United States and could be a particularly important source of both firm power and ancillary services in a decarbonizing grid. However, hydropower availability is vulnerable to drought conditions exacerbated by climate change, with …
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Fundamental design principles of novel MEMS based "Landau" switches, sensors, and actuators : Role of electrode geometry and operation regime
… hysteresis of SG-FETs puts a lower bound on the minimum power dissipation. ^ In this thesis, we provide solutions to the application specific problems of MEMS and utilize operation in or close to unstable regime for performance enhancement in several novel applications. Specifically, we propose …
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Physically constrained maximum likelihood (PCML) mode filtering and its application as a pre-processing method for underwater acoustic communication
… rank pseudoinverse, sampled mode shape, PCML minimum power distortionless response (MPDR), PCML-MAP, and MAP mode filters. The PCML-MAP filter performs as well as the MAP filter without the need for a priori data statistics. The PCML-MPDR filter performs nearly as well as the MAP filter as …
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Modeling and Analysis of the Effects of Impairments in Fiber Optic Links
… performance; for example, high bit-error-rate or power penalty. For optical communication systems, in this thesis, these impairments are categorized into four types; that is, thermal noise, shot noise, signal-dependent noise, and intersymbol interference (ISI). By using a Gaussian approximation, …
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Noise And Propulsive Efficiency Interactions For Rotors And Propellers At Constant Thrust
… show that, for a rotor at constant thrust, the minimum noise (from loading and thickness contributions) and minimum power operating points in terms of rotor RPM and collective blade pitch, are not the same thus leading to the fact that it takes increased energy to decrease noise. A MATLAB code …
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