Search for dissertations about: "A Rojas"

Showing result 1 - 5 of 45 swedish dissertations containing the words A Rojas.

2. 1. Childhood Social Exclusion and Suicidal Behavior in Adolescence and Young Adulthood

   Author : Yerko Rojas; Sten-Åke Stenberg; Ilkka Henrik Mäkinen; Bernice A Pescosolido; Stockholms universitet; []
   Keywords : SAMHÄLLSVETENSKAP; SOCIAL SCIENCES; Suicide; Attempted Suicide; Social Isolation; Loneliness; Social Capital; Social Integration; Social Recognition; Poverty; Gender-role Constraints; Life-course; Inequality; Power; Injustice; Durkheim; Bourdieu; Sociology; sociologi;

   Abstract : In this thesis I analyze, with the help of social epidemiological theories, childhood risk factors behind suicidal behavior in adolescence and young adulthood. The data comes mainly from the Swedish “Stockholm Birth Cohort Study” (SBC) consisting of 15,117 participants. A total of four separate studies are included. READ MORE

4. 2. Continuous-time System Identification : Refined Instrumental Variables and Sampling Assumptions

   Author : Rodrigo A. González; Cristian R. Rojas; Marion Gilson-Bagrel; KTH; []
   Keywords : TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; System identification; Continuous-time systems; Refined instrumental variables; band-limited signals; Electrical Engineering; Elektro- och systemteknik;

   Abstract : Continuous-time system identification deals with the problem of building continuous-time models of dynamical systems from sampled input and output data. There are two main approaches in this field: indirect and direct. In the indirect approach, a suitable discrete-time model is first determined, and then it is transformed into continuous-time. READ MORE

5. 3. Consistency and efficiency in continuous-time system identification

   Author : Rodrigo A. González; Cristian R. Rojas; Bo Wahlberg; Hugues Garnier; KTH; []
   Keywords : TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; System identification; Continuous-time systems; Consistency; Asymptotic efficiency; Electrical Engineering; Elektro- och systemteknik;

   Abstract : Continuous-time system identification deals with the problem of building continuous-time models of dynamical systems from sampled input and output data. In this field, there are two main approaches: indirect and direct. In the indirect approach, a suitable discrete-time model is first determined, and then it is transformed into continuous-time. READ MORE

6. 4. Optimal input design for nonlinear dynamical systems : a graph-theory approach

   Author : Patricio E. Valenzuela Pacheco; Cristian R. Rojas; Roland Hildebrand; KTH; []
   Keywords : TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; Input design; Markov chains; system identification; Electrical Engineering; Elektro- och systemteknik;

   Abstract : Optimal input design concerns the design of an input sequence to maximize the information retrieved from an experiment. The design of the input sequence is performed by optimizing a cost function related to the intended model application. Several approaches to input design have been proposed, with results mainly on linear models. READ MORE

7. 5. Optimization of the Sensor-Chip Surface in a Capacitive Biosensor for use in Aflatoxin Assays

   Author : Alvaro Gutierrez Rojas; Bioteknik; []
   Keywords : NATURVETENSKAP; NATURAL SCIENCES; TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; aflatoxin; biosensor; antibody; bioimprinting; gold nanoparticles; capacitance;

   Abstract : The capacitive biosensor technology can be utilized for the analytical detection of a variety of different compounds. By employing the electrical double-layer principle, it is possible to detect very low concentrations of the target analyte due the methods inherent high sensitivity. READ MORE