Sökning: "dropouts"

Visar resultat 1 - 5 av 30 avhandlingar innehållade ordet dropouts.

1. 1. Input-Output Stability Analysis of Networked Control Systems

   Författare :Johannes Nygren; Kristiaan Pelckmans; Torkel Glad; Uppsala universitet; []
   Nyckelord :TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; Networked control systems; L2-stability; quantization; delay; packet dropouts; switching systems; Elektroteknik med inriktning mot reglerteknik; Electrical Engineering with specialization in Automatic Control;

   Sammanfattning : The main focus of the thesis is to derive stability criteria for networked control system (NCS) models featuring imperfections such as time-varying and constant delays, quantization, packet dropouts, and non-uniform sampling intervals. The main method of proof is based on matrix algebra, as opposed to methods using Lyapunov functions or integral quadratic constraints (IQC). LÄS MER

3. 2. Studieavbrott i svensk skola : en uppföljningsstudie av en årskull elever från 10-26 års ålder = [Dropouts in the Swedish school] : [a follow-up study of an age group of students from 10-26 years of age]

   Författare :Rolf Beckne; Stockholms universitet; []
   Nyckelord :SAMHÄLLSVETENSKAP; SOCIAL SCIENCES; Studieavbrott; Skoltrötthet; Sverige;

   Sammanfattning : By questionnaires and interviews the reasons or causes of the dropping out have been investigated. The causes of dropout consists of a variety or a pattern of factors. Many reasons should be considered symptoms rather than real causes. The reasons are different in different grades. LÄS MER

4. 3. Young adults in urban Pakistan : barriers and challenges for improving health behaviors in the wake of the HIV/AIDS epidemic

   Författare :Syed Farid-ul Hasnain; Karolinska Institutet; Karolinska Institutet; []
   Nyckelord :Young adults; dropouts; knowledge and awareness; HIV AIDS; STDs; family planning; gender roles; life prospects; Karachi;

   Sammanfattning : Background: HIV/AIDS is spreading globally more specifically among the younger generation. The impact of HIV/AIDS on the youth cannot be underestimated. According to the UNAIDS report 2008; an estimated number of 33 million people around the globe were living with HIV in 2007, and overall, 2. LÄS MER

5. 4. Measuring eating disorder outcome : definitions, dropout and patients' perspectives

   Författare :Tabita Björk; Claes Norring; David Clinton; Gerd Ahlström; Bruno Hägglöf; Örebro universitet; []
   Nyckelord :MEDICINE; MEDICIN; Medicine; Medicin;

   Sammanfattning : Background: Despite a plethora of research, there are serious limitations in our knowledge of outcome in eating disorders. Almost all studies have been compromised by the problem of treatment dropout or non-participation in follow-ups. LÄS MER

7. 5. Harvesting Based Communications for Wireless Control Systems : Event-Trigger and Reinforcement Learning Based Transmission Policies

   Författare :Ruslan Seifullaev; Steffi Knorn; Anders Ahlén; Fredrik Gustafsson; Uppsala universitet; []
   Nyckelord :TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; wireless control systems; energy harvesting; event-triggered control; Lyapunov stability analysis; fading channel; quantized data; Markov models; Bayesian estimation; reinforcement learning; dynamic programming; Electrical Engineering with specialization in Signal Processing; Elektroteknik med inriktning mot signalbehandling;

   Sammanfattning : Wireless control systems have gained considerable attention in recent years due to their numerous advantages, including increased flexibility and scalability, reduced wiring complexity, and cost-efficiency. Despite these benefits, the use of communication networks in control loops poses various challenges, such as sampled data, latency, packet dropouts, etc. LÄS MER