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 372 for “"superimposed"”.
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Parametric estimation of superimposed signals
… bound (CRB) for parametric estimation of superimposed signals in white Gaussian noise were derived. The effect of the amplitude correlation structure of superimposed signals on the CRB of parametric estimation of superimposed signals in white Gaussian noise was considered. Two criteria for …
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Superimposed Coding Versus Sequential and Inverted Files
Made available in DSpace on 2014-12-13T17:49:13Z (GMT). No. of bitstreams: 1 7714960.pdf: 4356377 bytes, checksum: 69e9bb55ba56ec96ac2fcf91e7a1f3cf (MD5) Previous issue date: 1977
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Cenozoic extension superimposed on a Mesozoic thrust belt, central Nevada
The central Nevada thrust belt (CNTB) is a north-south trending belt of contractile structures in the hinterland of the Sevier orogenic belt. This study tests the hypothesis that analysis and regional correlation of CNTB structures is possible after retrodeformation of younger extensional faults; …
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Digital Libraries with Superimposed Information: Supporting Scholarly Tasks that Involve Fine Grain Information
… services to support working with subdocuments. Superimposed information (SI) refers to new information that is created to reference subdocuments in existing information resources. We combine this idea of SI with traditional DL services, to define and develop a DL with SI (an SI-DL). Our research …
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The electrolytic production of peroxydisulfuric acid using periodically reversed direct current and alternating current superimposed on direct current
… 0.2 to 4.5 amperes per square centimeter, superimposed on direct current on the electrolytic production of peroxydisulfuric acid. Electrolyses of 200 milliliters of sulfuric acid of specific gravity 1.4, at a temperature of 5 to 10 °C were performed with direct current. The anode current …
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The electrolytic production of lead chromate using periodically reversed direct current and superimposed alternating current on direct current
… to 0.01546 amperes per square centimeter of peak superimposed alternating current on direct current on the yield of lead chromate prepared by the electrolysis of a bath containing potassium chromate and sodium nitrate between lead electrodes. Electrolysis of a bath containing 3.60 grams of …
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The Effect of Superimposed Stress on High Temperature Degradation of Single Crystal Superalloys during Exposure to Various Sulphur and Sea Salt Environments
Alternative fuels and novel cycles are increasingly used to supply the world growing demand in energy whilst reducing the carbon emission. Such cycles include the integrated gasification combined cycle (IGCC) with carbon capture, which uses coal as fuel. In such situations however, sulphur and …
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Measurements and dynamics of multiple scale bedforms in tidally energetic environments
The presence of superimposed bedforms, where smaller bedforms exist on larger bedforms, is ubiquitous to energetic tidal environments. Due to their wide range in scale, it is difficult to simultaneously observe these features over tidal timescales. This thesis examines the morphological response of …
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Measurements and dynamics of multiple scale bedforms in tidally energetic environments
The presence of superimposed bedforms, where smaller bedforms exist on larger bedforms, is ubiquitous to energetic tidal environments. Due to their wide range in scale, it is difficult to simultaneously observe these features over tidal timescales. This thesis examines the morphological response of …
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Partial discharge ageing of polymer insulation under combined AC and DC stress at elevated temperatures
… transmission but there may also be AC harmonics superimposed. The frequency of the AC harmonics could be in kHz range. The superimposed harmonics on the HVDC may have synergistic effects on cable insulation and may lead to further degradation in the cable insulation.;In addition, for the sake of …
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Challenges to Implementing Community Based Ecotourism (CBET) as a Bottom up Development Approach in the Sinharaja Rain Forest (Sri Lanka)
… at a community level, the wider context includes superimposed capitalism, which dominates and counteracts the ideologies of CBET. Superimposed capitalism results in individualistic and competitive behaviours that undermine the collaborative community approach. It encourages poaching and the …
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Proximity effect in superconductors: Experimental and theoretical determination of the transition temperature
… and prediction of the transition temperature of superimposed films. The theoretical work consists of two parts: (1) an extension of the diffusion approximation theory due to de Gennes, Guyon and Werthamer; this theory is valid only when the mean free paths in the two metals are small compared to …
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The Relationship of the Mississippian Charles formation to the Structure of the Nesson Anticline of North Dakota
<p>An isopach map superimposed upon a structure contour map of the Charles formation shows a definite thinning of the Charles over the structurally high areas of the Nesson Anticline of North Dakota. It is here suggested that this fact be used to help exploration for oil in the area. </p>
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Using remote sensing to track complex sinuous ripple migration on a barchan dune in Herschel Crater, Mars
… actively migrating and presented some unique superimposed ripples. With this, we set out to measure the migration of both the superimposed ripples and the dune itself. The results indicate a ripple migration of between 0.12 m/Earth year and 0.61 m/Earth year, and a dune migration rate of …
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Breast Tomosynthesis: Aspects on detection and perception of simulated lesions
… masses were relatively unaffected. The effect of superimposed tissue in DM is the major limitation hampering the detection of masses. BT is a three-dimensional technique that reduces the effect of superimposed tissue. In the following two studies visibility was quantified for both imaging …
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Computer Techniques in Analysing Human Adventitious Lung Sounds
… lung sounds, which are distinct sound patterns superimposed onto the normal breath sound and are indicative of certain lung diseases. A software program is written which, upon analysing the acoustic data by several signal processing methods, will classify the lung sounds into one of the three …
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Indoor plants, identification and culture
… temperature, and light requirements were superimposed on each slide. Each plant's unique characteristics and uses were described by the script of the tape which averaged approximately thirty seconds per plant.
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