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 57 for “"DPD"”.
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On the boundary conditions for dissipative particle dynamics (DPD)
… lid driven cavity have been done to show that DPD can be used successfully to validate the results. In order to simulate flows where periodic boundary condition cannot be applied, a source-sink method is employed in which the particles are injected and removed from the system to induce the …
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A SSIMPLE Approach to Surfactant Self-Assembly using DPD Simulations
… such as dissipative particle dynamics (DPD), where molecule fragments are merged into a single entity, are preferred. For CG simulations, finding the correct interaction between beads is a crucial step to obtain the correct behaviour of the simulated system. Herein, a new DPD …
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Papel da cintilografia com DPD-99mTc na discriminação da amiloidose cardíaca
… da cintilografia realizada com dois traçadores: DPD- 99mTc versus MDP- 99mTc para detecção de anormalidades cardíacas em pacientes com amiloidose sistêmica comprovada ou em seus parentes com anormalidade genética confirmada. PACIENTES E MÉTODOS: Foram incluídos 22 pacientes com diagnóstico de …
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Disentangle model differences and fluctuation effects in DPD simulations of diblock copolymers
In the widely used dissipative particle dynamics (DPD) simulations 1, polymers are commonly modeled as discrete Gaussian chains interacting with soft, finite-range repulsions. In the original DPD simulations of microphase separation of diblock copolymer melts by Groot and Madden 2 , the simulation …
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Rheological characterization of polymers via dissipative particle dynamics
Dissipative particle dynamics (DPD) is a mesoscale simulation technique which uses soft potentials between large particles to reproduce liquid behavior. In form, DPD is similar to molecular dynamics, as all matter is represented by point particles which interact with each other via, pairwise …
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Rebuilding Forward: Digital participatory design (DPD) and building information modelling (BIM) in post-conflict urban recovery: the case of Damascus City
… (Coyne, 2023). The digital participatory design (DPD) framework enables the entire affected population, including refugees and externally displaced people (EDPs), to envision the future of their destroyed neighbourhoods. It allows architects, planners, citizens, non-governmental organisations and …
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Compact Digital Predistortion for Multi-band and Wide-band RF Transmitters
… on developing a compact digital predistortion (DPD) system which costs less DPD added power consumptions. It explores a new theory and techniques to relieve the requirement of the number of training samples and the sampling-rate of feedback ADCs in DPD systems. A new theory about the information …
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Digital predistortion of RF amplifiers using baseband injection for mobile broadband communications
… improve signal quality, digital predistortion (DPD) techniques are widely used. This work focuses on improving the performances of DPDs in modern, next-generation wireless transmitters. A new adaptive DPD based on an iterative injection approach is developed and experimentally verified using a …
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The impact of drug-induced dyskinesias on rapid alternating movements in patients with Parkinson's disease
… was investigated in ten dyskinetic patients (DPD). Their motor performance was compared to that of ten age/gendermatched non-dyskinetic patients (NDPD) and ten healthy control subjects. Whole-body magnitude (WBM) and fast pronation-supination at the wrist were recorded using 6- degrees of …
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A Particle-Based Multi-Scale Simulation Procedure within the Material Point Method Framework
… link between the Dissipative Particle Dynamics (DPD) method and the Material Point Method (MPM), and a hierarchical bridge from Molecular Dynamics (MD) to DPD. Particularly, a simple interfacial treatment is also introduced for concurrent DPD/MPM simulations based on the features of the DPD force …
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Comparative Analytical Methods for the Measurment of Chlorine Dioxide
… The different analytical methods included: 1.The DPD (N, N-diethyl-p-phenylenediamine) method 2.Lissamine Green B (LGB) wet-chemical method 3.Palintest® kit LGB 4.Amperometric titration All these tests were performed with standard 1.0 mg/L ClO2 either alone or in the presence of different chlorine …
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Untersuchungen zu Stellenwert und Aussagekraft der 3-D-SPECT-Rekonstruktion und der [18F]-Fluorid-PET-Untersuchung zur Diagnostik in der Mund-, Kiefer- und Gesichtschirurgie
… der 3-D-Rekonstruktionen konventioneller 99mTc-DPD-SPECT-Aufnahmen untersucht. <br>In einer ersten Studie wurde bei 88 an einem Plattenepithelkarzinom der Mundhöhle erkrankten Patienten die Genauigkeit, Spezifität und Sensivität der Untersuchungsmethode bei der Beurteilung einer fraglichen …
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Digital Pre-Distortion: The Implementation, Minimisation, & Estimation
… can be applied to a PA. Digital Pre-Distortion (DPD) has been widely demonstrated in industry and academia to perform linearisation. Some issues concerning DPD are related to implementation efficiency, robust function estimation and the complexity of DPD solutions. This dissertation contributes …
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Designing and Fabricating 3D Nanostructures through Directed Self-Assembly of Block Copolymers
… the first stage, dissipative particle dynamic (DPD) has been reparametrized to give accurate predictions of self-assembled structures of BCP thin films. DPD is a particle-based simulation, which gives intuitive representations of the various experiment conditions compared to field-based …
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Digitally-assisted, efficiency enhanced, linear RF power amplifier architectures
… of degradation in linearity. A new segmented DPD architecture is proposed which subdivides the complete dynamic range of the Doherty PA into two power regions, a lower and a higher power region. As the nature of non-linearities exhibited by the Doherty PA are different in these distinct …
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A Qualitative Analysis of Parent Observations of Children Diagnosed with a Developmental Speech Delay
… (DAS) or developmental phonological disorder (DPD). Using a semi-structured interview, six mothers of children with DAS and five mothers of children with DPD were asked to reflect on specific aspects of the development of their child over time, with emphasis on communication development and …
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Small-molecule activation chemistry catalyzed by proton-coupled electron transfer
… by a rigid xanthene (DPX) or dibenzofuran (DPD) spacer - Pacman porphyrins. A comparative structural study demonstrates that DPD has the unprecedented ability to open and close its binding pocket by a vertical distance of over 4 A upon substrate binding, providing the first direct …
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High performance Deep Learning based Digital Pre-distorters for RF Power Amplifiers
… The simulation results show that BiLSTM based DPDs work the best in terms of improving the linearity performance. We also compare two methodologies of direct learning and indirect learning to develop deep learning-based digital pre-distorters (DL-DPDs) models and evaluate their improvement on …
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