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 46 for “"tdd"”.
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Diffusivity of drug actives in transdermal drug delivery (TDD)
Transdermal Drug Delivery (TDD) through skin patches has many advantages including the following: slow and continuous administration of the therapeutic over long periods of time, timely dosage, accessibility, kinetic maneuverability, elimination of the "First Pass Effect" and negative side effects …
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Channel Estimation in TDD and FDD-Based Massive MIMO Systems
There are three parts to this thesis. In the first part, we study the channel estimation problem in frequency-selective multi-user (MU) multi-cell massive multiple-input multiple-output (MIMO) systems, where, a time-domain semi-blind channel estimation technique is proposed. Compared to …
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Adaptive Asymmetric Slot Allocation for Heterogeneous Traffic in WCDMA/TDD Systems
… Multiple Access/Time Division Duplexing (WCDMA/TDD) systems since they are known to be efficient for bursty traffic. Most existing MAC protocols developed for WCDMA/TDD systems are interested in the performance of a unidirectional link, in particular in the uplink, assuming that the number of …
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Spectrum sharing for multi-user massive MIMO networks
… for both conventional time-division duplexing (C-TDD) and reverse time-division duplexing (R-TDD) protocols. In the C-TDD approach, both the PN and SN operate concurrently in either the uplink (UL) or downlink (DL) modes. In the R-TDD protocol, the PN and SN do not simultaneously operate in the UL …
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Why do software developers practice test-driven development?
… intention to perform test driven development (TDD). Unit tests are a form of testing, where tests are written for small units of software being developed. TDD is a practice where these tests are written before the functionality is written, so as to guide the design of the code for the …
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ADMM Based Methods for Time-Domain Decomposition Formulations of Optimal Control Problems
… methods for time-domain decomposition (TDD) formulations of linear-quadratic partial differential equation (PDE)-constrained optimization problems. The solution of such optimization problems is computing time and memory intensive. TDD formulations split the time-dependent PDE into …
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Best Practices for Test Driven Development
… works...is the goal of Test-driven Development (TDD)." TDD is a style of software development that first begins with the creation of tests and then makes use short, iterative development cycles until all test requirements are fulfilled. In order to provide the reader with sufficient background to …
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Adding Personalized Wavefront Correction to a Scleral Lens After Lens Manufacture
… Zernike polynomial. Total dioptric difference (TDD) and change in higher order RMS wavefront error (HO-RMS WFE) were calculated between each wavefront-guided lens and its design, its within-method of manufacture duplicate, and across methods of manufacture. TDD was compared to the clinical step …
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MATLAB implementation of an operational modal analysis technique for vibration-based structural health monitoring
… technique called time domain decomposition (TDD) based on [15] was implemented. The MATLAB TDD implementation was applied to the dynamic responses from two finite element models of simply-supported beams and their modal frequencies and shapes were extracted. The first three modal frequencies …
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Germanium on silicon heteroepitaxy for high efficiency photovoltaic devices
… sufficiently low threading dislocation density (TDD) that does not adversely effect carrier lifetimes in epitaxially deposited III-V layers that inherit the Ge film's TDD. Assuming recombination at dislocations is carrier diffusion limited, an acceptable limit for most applications is below 10⁶ …
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Substrate and channel engineering for improving performance of strained-SiGe MOSFETs
… providing low threading dislocation densities (TDD) on the order of 105 cm-2. For many III-V devices on Si, such as high-efficiency multi-junction solar cells, the SiGe graded buffer approach is hindered somewhat by the fact that relatively thick buffers must be grown to relieve the strain …
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TASK- AND DOMAIN-DEPENDENT NATURAL LANGUAGE PROCESSING FOR SUPPORTING SPOKEN DOCUMENT USE
… the design process—task- and domain-dependent (TDD) development—leads to effective Spoken Document Support System (SDSS) prototypes. The presented field studies identify Automatic Speech Recognition (ASR) and Sentiment Analysis (SA) as two requisite NLP technologies for supporting information …
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Simulation Study of Local Multipoint Distribution Service
… schemes under study are Time Division Duplexing (TDD), and Frequency Division Duplexing (FDD). For the system under study, it was observed that TDMA results in lower end-to-end (ETE) delay per packet, but higher jitter, than FDMA. In addition, TDD results in lower ETE delay per packet than FDD. …
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Test-driven development of embedded control systems: application in an automotive collision prevention system
With test-driven development (TDD) new code is not written until an automated test has failed, and duplications of functions, tests, or simply code fragments are always removed. TDD can lead to a better design and a higher quality of the developed system, but to date it has mainly been applied to …
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Targeted Drug Delivery with Cyclodextrin-based Nanocarriers and Focused Ultrasound Triggering
… current challenges of targeted drug delivery (TDD) to tumours using magnetic resonance imaging guided focused ultrasound (MRgFUS) to cavitate microbubbles (MBs) for increasing cell permeability and to open ‘drug nano-capsules’ to release proven active anticancer drugs directly to the tumour …
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Capsule-based Ultrasound-mediated Targeted Drug Delivery
… therapeutic CE (TCE). Targeted drug delivery (TDD) is a therapeutic modality that could be combined with CE. It allows drugs to be delivered to the diseased tissue, enhancing effectiveness and reducing side effects. Several proof of concept TCEs for TDD exist (Parr et al., 1999; Wilding, Hirst …
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Relative Bio-Equivalence of Salbutamol MDIs Without and With the Attached Spacers. Development and validation of novel HPLC methods for the determination of salbutamol (and terbutaline) in urine excreted post-inhalation for bioequivalence and pharmacokinetic studies of Salbutamol MDIs
… particle dose (FPD) and total delivered dose (TDD). Bioequivalence studies were conducted in humans using the urinary pharmacokinetic method. Post-inhalation urinary excretion of salbutamol in the first 0.5 hour (lung deposition, USAL0.5) and over 24 hours (total systemic bioavailability, …
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Substrate Impurity Incorporation Mitigation for Improved AlGaN/GaN-ON-Si RF Performance
… to a very large threading dislocation density (TDD) within the AlN layer thereby creating a leakage path, significant electron scattering, and charge carrier trap centers. The parasitic conduction path dissipates the radio-frequency (RF) signal, which increases with operation frequency, in …
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Mechanisms and impact of alternative transposition-induced segmental duplications
… that can generate tandem direct duplications (TDD) and novel structures termed Composite Insertions. Genomic study revealed that these mechanisms have played an important role in generating TDD in 8 of 22 examined plant genomes. We also found a significant dosage-dependent effect of a 14.6 Mb …
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Materials science and design for germanium monolithic light source on silicon
… to examine the threading dislocation density (TDD) in n-Ge for both blanket films and trench grown waveguides. We found a high TDD of ~ 1×10⁸cm-² in 1 [mu]m thick blanket Ge with doping of 3×10¹⁸ cm-³ after high temperature annealing at 850 °C for 40 min. The TDD is 1×10⁹ cm-² in the 300 nm …
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