GPU-based commonsense reasoning for real-time query answering and multimodal analysis by Tran, Ha Nguyen

“…Secondly, in order to reason and retrieve information on rule-based knowledge bases, the thesis introduces gSparql, a fast and scalable inference and querying method on mass-storage RDF data with rule-based entailment regimes. Our approach accepts different rulesets and executes the reasoning process at query time when the inferred triples are determined by the set of triple patterns defined in the query. …”
Get full text

Towards electrically injected colloidal semiconductor lasers by Thung, Yi Tian

“…The NPL-VCSEL demonstrated a low lasing threshold of 21.6 W cm-2 with a single-mode Q-factor of 11800 under continuous-wave (cw) excitation, with good agreement between the cw-pumped lasing spectra and the ps pulse-pumped lasing spectra. to highlighting the NPL-VCSEL’s robustness under different optical pumping regimes, I demonstrated the NPL-VCSEL’s performance under continuous wave optical pump, affirming the suitability of the colloidal NPLs as the preferred gain medium to realize the desired electrically injected colloidal semiconductor lasers. …”
Get full text

Studies on plasma assisted molecular beam epitaxial growth of GaN-based multilayer heterostructures on Si for photodetector application by Zheng, Yi

“…Tunability of band gap and the possibility of formation of heterostructures with group III-nitride materials allow the design of complex structures to detect both UV and infra-red (IR) spectral regimes (multi band) on a single chip. By growing AlGaN/GaN multiple quantum well layers, IR detector can also be obtained, which means IR and UV detector can be achieved using the same material. …”
Get full text
Get full text