Trip chaining and mode choice are two important travel behavior decisions in activity-based travel demand modeling system. The hierarchy of these two decisions influences models predictive capability and policy sensitivity. This thesis is aimed at investigating the hierarchical relationship between these decisions and also the effects of socio-demographic characteristics on them. Structural Equation Modeling (SEM) technique is used for this investigation. A six week travel diary data collected in Thurgau, Switzerland in 2003 is used for model estimation. Model estimation results show that for work-tour, trip chain and mode choice decisions are simultaneous and it remains consistent across the six weeks. For weekdays non-work tour, mode choice precedes trip chain whereas for weekends non-work tour trip chain precedes mode choice. The investigation of the effect of a number of socio-demographic characteristics on trip chaining and mode choice behaviors is also found useful for better understanding of these behaviors. / Transportation Engineering

Thesis (MEng)--University of South Australia, 1995

This thesis covers the construction and characterisation of microlasers based on whispering gallery modes in ytterbium-doped microsphere resonators. The microlasers were made by drawing and fusing Yb-doped silica optical fibre into microspheres of approximately 100 μmin diameter using CO2 laser-induced melting. Access to whispering gallery modes was accomplished using a prism coupled to the evanescent field of the internal cavity modes. Microspheres with Q-factors of up to 10^7 were made using this technique. CW multimode lasing was observed at 1050 nm, with a pump threshold required for lasing estimated to be of the order of 100 μW for a 900 nm pump. Both TE and TM modes were identified in the laser emission and the ability to selectively excite each mode family (TE or TM) is shown to be directly controlled by the pump. Pulsed lasing was also observed at 975 nm and 1050 nm.

Thesis (Ph. D.)--Ohio State University, 2007. / Title from first page of PDF file. Includes bibliographical references (p. 131-136).

Thesis (M.S.)--Oregon Graduate Center, 1988.

Thesis (M. Sc.)--University of Adelaide, Dept. of Applied Mathematics, 1992. / Includes bibliographical references (leaves 136-142).

Pädag. Hochsch., Diss.--Heidelberg, 2007.

Thesis (Ph. D.)--Carleton University, 2005. / Includes bibliographical references (p. 159-166). Also available in electronic format on the Internet.

Zugl.: Frankfurt (Main), Univ., Diss., 2005/2006

Zugl.: Bochum, Universiẗat, Diss., 2006 u.d.T.: Pelka, Anna: Jugend, Mode, Politik.