Essays about: "radio frequency"

Showing result 21 - 25 of 461 essays containing the words radio frequency.

1. 21. Deep Learning for the prediction of RASER-MRI profiles

   University essay from Linköpings universitet/Medie- och Informationsteknik

   Author : Filip Arvidsson; Jonas Bertilson; [2023]
   Keywords : MRI; NMR; AI; Deep Learning; RASER-MRI; Media Technology; KIT; LIU; CNN; Autoencoder; Djupinlärning; Medieteknik; Magnetröntgen;

   Abstract : Magnetic resonance imaging (MRI) is a critical diagnostic tool in medical practice, enabling non-invasive visualization of anatomy and physiological processes. Nonetheless, MRI has inherent spatial resolution limitations, which may limit its diagnostic capabilities. READ MORE

3. 22. Phase Unwrapping MRI Flow Measurements

   University essay from Uppsala universitet/Avdelningen Vi3

   Author : Mio Liljeblad; [2023]
   Keywords : phase unwrapping; computer vision; cine MRI; NMR; flow measurements; velocity encoding; venc; energy minimization; magnetic resonance; cardiac MRI; sinotubuar junction; pulmonary artery; ascending descending aorta; laplacian algorithm; iterative graph cuts; IGC; sequential tree-reweighted message passing; TRW-S; velocity to noise ratio; VNR; retrospective wrapping; energy formulation;

   Abstract : Magnetic resonance images (MRI) are acquired by sampling the current of induced electromotiveforce (EMF). EMF is induced due to flux of the net magnetic field from coherent nuclear spins with intrinsic magnetic dipole moments. READ MORE

4. 23. Drone Detection using Deep Learning

   University essay from KTH/Skolan för elektroteknik och datavetenskap (EECS)

   Author : Yating Liu; [2023]
   Keywords : Drone Detection; Real-time Tracking; Deep Learning; Computer Vision; Small Object Detection; YOLO; Drönardetektering; Realtidsspårning; Deep Learning; Computer Vision; Small Object Detection; YOLO;

   Abstract : Drone intrusions have been reported more frequently these years as drones become more accessible in the market. The abuse of drones puts threats to public and individual safety and privacy. Traditional anti-drone systems use radio-frequency sensors widely to get the position of drones. READ MORE

5. 24. Optimizing Load Balancing inRaytracing for Radio Frequency PropagationPredictive models developed for simulation systems

   University essay from Uppsala universitet/Institutionen för informationsteknologi

   Author : Wenhao Zhu; [2023]
   Keywords : ;

   Abstract : This thesis presents two predictive models with the aim of pre-allocating memory efficiently in the Ericsson Radio Frequency Propagation Simulation System through the prediction model, so as to achieve the effect of load balancing. The proposed approaches utilize interpolation and the Gradient Boosting Decision Tree (GBDT) method from machine learning for prediction and  apply both methods in multiple test scenarios. READ MORE

6. 25. Marking tags within the construction industry : A qualitative case study of the Swedish construction industry regarding implementing technical standardizations to promote circularity

   University essay from Uppsala universitet/Institutionen för samhällsbyggnad och industriell teknik

   Author : Markus Eriksson; Casper Norberg; [2023]
   Keywords : Sustainability; Construction industry; Radio frequency identification; Circularity; Attitude; Environment; Socio-technical transition theory; multi-level perspective.;

   Abstract : The construction industry is vital in meeting humanity's infrastructure and essential building needs. However, its current practices contribute significantly to environmental challenges such as global warming, deforestation, and biodiversity loss. The current study points out the need for a more sustainable approach in the construction sector. READ MORE