Sökning: "Kevin Liu"

Visar resultat 11 - 15 av 29 uppsatser innehållade orden Kevin Liu.

1. 11. Automatic Speech Quality Assessment in Unified Communication : A Case Study

   Master-uppsats, Linköpings universitet/Programvara och system

   Författare :Kevin Larsson Alm; [2019]
   Nyckelord :speech; voice; communication; qoe; quality of experience; unified communication; uc; speech quality assessment; speech quality; voice calls; gaussian mixture model; gmm; gaussian mixture regression; gmr; mel frequency cepstrum coefficients; mfcc; human feature cepstrum coefficients; hfcc; gammatone frequency cepstral coefficients; gfcc;

   Sammanfattning : Speech as a medium for communication has always been important in its ability to convey our ideas, personality and emotions. It is therefore not strange that Quality of Experience (QoE) becomes central to any business relying on voice communication. LÄS MER

3. 12. Efficient Energy Use of FPGA for Underwater Sensor Network

   Master-uppsats, Linköpings universitet/Elektroniska Kretsar och System

   Författare :Erik Amgård; Kevin Bergman; [2019]
   Nyckelord :Underwater Sensor Network; FPGA; FFT; VHDL;

   Sammanfattning : Operational time is becoming an increasingly important aspect in electronic devices and is also highly relevant in Underwater Acoustic Sensor Networks (UWSN). This thesis contains a study which explores what can be done to de-crease power consumption while maintaining the same functionality of an FPGA inside an underwater sensor-node network. LÄS MER

4. 13. Optimization of gas flow uniformity in enhancement of Metal Organic Chemical Vapor Deposition growth for III-nitrides

   Master-uppsats, Linköpings universitet/Halvledarmaterial

   Författare :Kevin Olsson; [2019]
   Nyckelord :material science; mocvd; gan; semiconductors; gallium; nitride; fluid dynamics; termoelements; thermocouple; injector; heat transfer; thermal distribution; graphite; HEMT; III-nitrides; hot-wall MOCVD system; GaN-on-SiC; gas flow profile; laminar flow;

   Sammanfattning : The thesis focuses on the gas flow profile optimization of a non-conventional injector in a hot-wall MOCVD system. The injector’s gas flow profile is simulated with CFD and demonstrates awell-behaved laminar flow with a parabolic profile. LÄS MER

5. 14. Point Cloud Registration in Augmented Reality using the Microsoft HoloLens

   Master-uppsats, Linköpings universitet/Datorseende

   Författare :Kevin Kjellén; [2018]
   Nyckelord :point cloud; registration; point cloud registration; hololens; time-of-flight; ToF; mesh; evaluation; algorithms; joint registration multiple point clouds; JR-MPC; JRMPC; Fast Global Registration; FGR; Prerejective RANSAC; RANSAC;

   Sammanfattning : When a Time-of-Flight (ToF) depth camera is used to monitor a region of interest, it has to be mounted correctly and have information regarding its position. Manual configuration currently require managing captured 3D ToF data in a 2D environment, which limits the user and might give rise to errors due to misinterpretation of the data. LÄS MER

7. 15. Predicting Customer Lifetime Value : Understanding its accuracy and drivers from a frequent flyer program perspective

   Uppsats för yrkesexamina på avancerad nivå, Linköpings universitet/Institutionen för ekonomisk och industriell utveckling

   Författare :Kevin Do Ruibin; Tobias Vintilescu Borglöv; [2018]
   Nyckelord :;

   Sammanfattning : Each individual customer relationship represents a valuable asset to the firm. Loyalty programs serve as one of the key activities in managing these relationships and the well-developed frequent flyer programs in the airline industry is a prime example of this. LÄS MER