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 47 for “"current measurement"”.
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Study of current measurement in magnetic force microscopy
Thesis (M.Eng.)--Massachusetts Institute of Technology, Dept. of Electrical Engineering and Computer Science, 2002.
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A contactless and non-intrusive current measurement technique for low and medium voltage AC power systems
The real-time state of current is essential to precisely monitor and control the AC power systems. It is also crucial for detecting various types of faults that may lead to long duration and wide area outages and affect the reliability and dependability. Traditional core wound window type current …
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Unlocking SiC MOSFET Switching Performance Through Packaging and Instrumentation
… frequencies. In contrast, packaging and measurement technologies have not significantly evolved to support these emerging high-speed devices. Traditional wire-bonding packaging technologies that were originally developed in the 1950's are still being used today, with the majority of power …
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Detection and localization of events in computer networks using end-to-end measurements time series
… ISP’s network’s characteristics, and the current measurement process, this dissertation aims to check the viability of only using end-to-end QoS measures, and traceroutes, to identify and localize network events. An event can be interpreted as a behavioral change in a network equipment, …
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Switched aperture surface current measurements
The measurement of induced surface currents on antennas, scatterers, and other structures is important for a variety of reasons, including in-situ measurements and validation of simulated results. Techniques for measuring the complete vector nature of surface currents (magnitude, direction, and …
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A low-cost pulsed Fourier transform network analyzer.
… applications are being developed based on the measurement of the electrical response in the RF and microwave frequency region of various materials ranging from blood glucose to concrete mixtures. Current measurement instrumentation carries a minimum cost in the tens of thousands of dollars …
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Electrodeposition of cermets
… was that of streaming potential and streaming current measurement
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Determining phosphate levels in natural water using a novel electrochemical measurement device
Current measurement of the phosphorus level in natural water are based on the phosphomolybdenum blue (PMB) method. In this method, the phosphate and molybdate ion form 12-molybdophosphoric acid (12-MPA) which is reduced to yield intensely coloured PMB, and its intensity is correlated with the …
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Face distance : unpacking the role of ethnic ties in venture capital investment
… is defined both theoretically and empirically. Current measurement of ethnic ties is problematic due to mis-classifications, mixed heritage individuals, and variation in accuracy by ethnicity. This paper overcomes these limitations by taking advantage of a novel source of data -- face …
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Sensorless Control of a Bidirectional Boost Converter for a Fuel Cell Energy Management System
… cost through topology changes and elimination of current sensors. A dual 2.5kW non-isolated bidirectional boost converter is designed and analyzed. The various bidirectional boost topologies are compared on cost and ability to meet the specifications. A sensorless average current mode is designed, …
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Quantifying dermatology : method and device for user-independent ultrasound measurement of skin thickness
… of the hand and arm. The Repeated Skin Thickness Measurement (RSTM) Device moves a high frequency ultrasound probe linearly in 3 axes in a water tank and images a submerged arm. These images are combined into an ultrasound volume, the skin layer segmented, and the thickness extracted. One …
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Development of a contextualised understanding of the diffusion of innovation among quantity surveyors in the UK construction industry
… particular type of innovation, the New Rules of Measurement, as a vehicle for the analysis. A qualitative research approach that gathers the rich explanatory data is utilised, using semi structured interviews, which is lacking in the diffusion research field. This approach supports a …
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Studies on the interaction of surfactants and neutral cyclodextrins by capillary electrophoresis. Application to chiral analysis
… Furthermore, a new CE approach based on electric current measurement was developed for the estimation of the stoichiometry as well as of the binding constants of SDS-CDs complexes. The results of these investigations were compared to those obtained with a different technique, electronic …
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Privacy implications of information leakage from IP addresses - a web fingerprinting approach
… user’s privacy on the web. We perform a measurement study on datasets representative of the state of the Internet fetched via HTTP Archive or those collected with configurations like Adblock enabled vs. disabled over extended periods of time by crawling Alexa’s top websites to gauge the …
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Mobile phone-based evaluation of talent tuberculosis infection
… reconstruct the induration in 3D, followed by 3D measurement of the induration with the aid of Python functions. The screening accuracy of the developed process was tested using a 3D printed induration and an HTC One smartphone to capture images. In this accuracy test, the developed screening tool …
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An investigation of the measurement, fixturing, and trimming of large sheet metal parts
… these issues. This thesis investigates the measurement, fixturing, and trimming of large sheet metal parts. The objective of the thesis is to first present the current and alternative methods of three-dimensional measurement, fixturing, and trimming, especially for the RTFF project. Then, …
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Novel System Identification Techniques For Battery Management System
… depends only on measured voltage across and current through the battery; (ii) We theoretically derive the estimation error in terms of the voltage and current measurement errors; (iii) The proposed approach is unaffected by the effect of hysteresis in batteries; (iv) The proposed approach is …
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Directed assembly of functional patterns
… low-level electrical testing (nA and pA level current measurement) have been developed and used to demonstrate anisotropic conductivity and reconfigurability in networks of organic and hybrid nanomaterials, laying the basis for further development of the system. A versatile experimental …
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High-Precision Half-Life Measurement of Oxygen-14
Precision measurements of the ft values for Superallowed Fermi beta decays between nuclear isobaric analogue states of spin-parity Jπ= 0+, T = 1 provide fundamental tests of the electroweak interaction. These transitions are used to constrain the conserved vector current (CVC) hypothesis and …
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A spectral approach for noninvasive estimation of intracranial pressure
… monitoring of several neurological pathologies. Current measurement modalities of ICP are highly invasive, largely limiting the measurement to critically ill patients. An accurate noninvasive method to estimate ICP would dramatically expand the patient pool for which this important cranial vital …
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