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.
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Showing 1 to 20 of 99 for “"Figures of Merit"”.
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Investigation of the Effects of Various Energy and Exergy-Based Objectives/Figures of Merit on the Optimal Design of High Performance Aircraft System
This thesis work shows the advantages of applying exergy-based analysis and optimization methods to the synthesis/design and operation an Advanced Aircraft Fighter (AAF) with three subsystems: a Propulsion Subsystem (PS), an Environmental Control Subsystem (ECS), and an Airframe Subsys-tem - …
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Solution Synthesized Nanostructured Thermoelectric Materials
… if thermoelectric materials with improved figures of merit could be made. Over the past twenty years, many nanostructured materials have been shown to possess improved figures of merit compared to their bulk counterparts mostly due to the reduction in thermal conductivity associated with …
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METHOD DEVELOPMENT OF STANDARD DILUTION ANALYSIS ON MOLECULES AND DISSOLUTION STUDIES OF IBUPROFEN TABLETS ALONG WITH COMMON BEVERAGE CONSTITUENTS
… for the manufacturing, storage, and analysis of medicinal formulations. One analysis, dissolution testing evaluates the rate at which the medicinal formulation forms a solution to predict <em>in vivo</em> drug release. Dissolution testing on ibuprofen tablets alone and in the presence of …
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New to ols For Monitoring Gamma Camera Uniformity
… is a fundamental performance characteristic of all modern gamma camera systems, and ensuring a stable, uniform detector response is critical for maintaining clinical images that are free of artifact. For these reasons, the assessment of detector uniformity is one of the most common activities …
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RFIDIoT: RFID as the data link layer for the internet of things
In this thesis, the suitability of RFID as a platform for real time applications in the Internet of Things is investigated. Two sample applications of RFID technology identify throughput and latency as key figures of merit. An experiment to measure these parameters in an existing implementation is …
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Modular modeling and control of a hybrid unmanned aerial vehicle’s powertrain
The emerging trend of vehicle electrification is revolutionizing the transportation industry by replacing traditional mechanical and hydraulic components with higher performing, more reliable, and more efficient electrical components. However, the introduction of a complex electrical network …
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Spatial Nyquist fidelity method for structural models of opto-mechanical systems
… during the initial design phases. The method of building these simulation models is often based on engineering experience with older, potentially dissimilar systems. A method is needed to measure the fidelity of simulation models so early design decisions are made based on appropriate modeling …
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Availability of continuously-operated, coherent, multifunctional systems
… are designed to accomplish not one but a series of missions, each one requiring the performance of certain functions. Each of those functions requires the support of some system elements. The fact that an element is not available at certain point in time by no means implies that the entire system …
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Optimal Measurements Tasks and Their Physical Realizations
… materials hitherto unpublished on the subject of quantum information theory. Particularly, results in optimal discrimination, cloning, and separation of quantum states, and their relationships, are discussed.</p> <p>Our interest lies in the scenario where we are given one of two quantum states …
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The Effect Of Hot Carrier Stress On Low Noise Amplifier Radio Frequency Performance Under Weak And Strong Inversion
… focused on studying RF performance degradation of a low noise amplifier (LNA) circuit due to hot carrier effect (HCE) in both the weak and strong inversion regions. Since the figures of merit for the RF circuit characterization are gain, noise figure, input, and output matching, the LNA RF …
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First-principles study of phonon drag effect in SiGe alloys
Thermoelectric materials with large figures of merit zT ([mathematical equation], where S, T, [sigma], K are the Seebeck coefficient, absolute temperature, electrical conductivity and thermal conductivity) are promising candidate materials for efficient solid-state devices for electricity …
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Uv-Visible Microscope Spectrophotometric Polarization And Dichroism With Increased Discrimination Power In Forensic Analysis
<p>Microanalysis of transfer (Trace) evidence is the application of a microscope and microscopical techniques for the collection, observation, documentation, examination, identification, and discrimination of micrometer sized particles or domains. Microscope spectrophotometry is the union of …
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Wafer Level Characterization of Infrared Detectors
… will require wafer level characterization of photonic detectors with rapid throughput of figures of merit. This thesis compares the performance of mid-wave infrared (MWIR) photonic detectors using a conventional cryostat and a micro-manipulator probe station to extract specific figures of …
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Development and Application of Hydride Generation Laser Induced Fluorescence Method for Quantitative Analysis of Bismuth and Germanium
… has been investigated for the measurements of Bi (III) and Ge (IV) in aqueous samples. The developed HG-LIF method has been evaluated in terms of analytical figures of merit. The limits of detection calculated are 0.03 ng/mL and 0.1 ng/mL for Bi and Ge, respectively. The accuracy of this …
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Comparative System Analysis of Reusable Rocket and Air-Breathing Launch Vehicles
… performed to assess and compare the parameters of single- and two-stage reusable air-breathing and rocket launch vehicles to identify configurations which improve space access and merit further developmental emphasis. Investigated air-breathing configurations included both two-dimensional and …
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Propulsion considerations for supersonic oblique flying wings
… via the development and interrogation of aerodynamic and propulsive synthesis models. These models were an amalgamation of computational tools (MSES), linearized theory, parametric estimation, and quasi D thermodynamic cycle analysis. Lift-to-drag ratio, thrust specific fuel …
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Methods and tools for the formulation, evaluation and optimization of rover mission concepts
… a limited architectural trade space. The design of future missions must resolve a conflict between increasingly ambitious scientific objectives and strict technical and programmatic constraints. Therefore, there is a need for advanced mission study engineers to consider a wider range of surface …
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Extraction of Basic Noun Phrases from Natural Language Using Statistical Context-Free Grammar
The objective of this research was to extract simple noun phrases from natural language texts using two different grammars: stochastic context-free grammar (SCFG) and non-statistical context free grammar (CFG). Precision and recall were calculated to determine how many precise and correct noun …
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A Nanoengineering Approach to Oxide Thermoelectrics For Energy Harvesting Applications
The ability of uniquely functional thermoelectric materials to convert waste heat directly into electricity is critical considering the global energy economy. Profitable, energy-efficient thermoelectrics possess thermoelectric figures of merit ZT ≥ 1. We examined the effect of metal nanoparticle – …
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Energy-Efficient Collaborative Communications for Wireless Sensor Networks
… in order to reduce the energy consumption of wireless sensor networks in the presence of AWGN and Rayleigh fading without decreasing the quality of service of data transmission. Due to the reduction of energy consumption of wireless sensor networks, the life time of sensor networks is …
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