Thesis (Ph. D.)--University of Wisconsin--Madison, 1970. / Typescript. Vita. eContent provider-neutral record in process. Description based on print version record. Includes bibliography.

Thesis (Ph. D.)--University of Texas at Austin, 2005. / Vita. Includes bibliographical references.

Thesis (Ph. D.)--University of Texas at Austin, 2007. / Vita. Includes bibliographical references.

abstract: For some children, peer victimization stops rather quickly, whereas for others it marks the beginning of a long trajectory of peer abuse (Kochenderfer-Ladd & Wardrop, 2001). Unfortunately, we know little about these trajectories and what factors may influence membership in increasing or decreasing victimization over time. To address this question, I identified children's developmental patterns of victimization in early elementary school and examined which child-level factors influenced children's membership in victimization trajectories using latent growth mixture modeling. Results showed that boys and girls demonstrated differential victimization patterns over time that also varied by victimization type. For example, boys experienced more physical victimization than girls and increased victimization over time was predicted by boys who display high levels of negative emotion (e.g., anger) towards peers and low levels of effortful control (e.g., gets frustrated easily). Conversely, girls exhibited multiple trajectories of increasing relational victimization (i.e., talking about others behind their back) over time, whereas most boys experienced low levels or only slightly increasing relational victimization over time. For girls, withdrawn behavior lack of positive emotion, and displaying of negative emotions was predictive of experiencing high levels of victimization over time. / Dissertation/Thesis / Doctoral Dissertation Family and Human Development 2015

The main objectives of this research, that took place in Lima between 2012 and 2013, were to analyze: a) the consequences of teenage motherhood in education, labor and family and b) the factors that influence the reconfiguration of the life trajectories of the teenage mothers after the pregnancy period. After interviewing thirteen teenage mothers that come from different socioeconomic backgrounds and whose children age range between 2-5 years old, we find two types of trajectories: a) the teenage mother trajectory and b) the teenage as mother trajectory. The results of this research suggest that the socioeconomic background, gender, teenage culture and motherhood, as well as the experiences, characteristics and aspirations of each woman are key factors that shape the life trajectories of teenage mothers. / Analizar las consecuencias de la maternidad adolescente en los ámbitos educativo, laboral y familiar, así como los factores que influyen en la reconfiguración de la trayectoria de vida de la madre adoles- cente tras el embarazo, son los principales objetivos de esta investigación realizada entre los años 2012 y 2013. A partir de trece entrevistas en profundidad a madres adolescentes con hijos entre 2 y 5 años de edad y provenientes de distintos estatus socioeconómicos de Lima, encontramos dos trayectorias tipo: la trayectoria madre adolescente y adolescente-madre. Los hallazgos de este estudio sugieren la importancia del estatus socioeconómico, los roles de género, las concepciones en torno a la adolescencia y al ejercicio de la maternidad, así como las vivencias, características y aspiraciones propias de cada mujer como factores que intervienen en la configuración de la trayectoria de vida de las madres adolescentes.

no abstract provided by author / M. Eng.

The heart failure illness trajectory is both complex and unpredictable, which makes providing palliative care services to patients with heart failure a challenge. As a result, although services are needed, few tend to be offered beyond basic medical management. The traditional model of palliative care is typically based on palliative care being considered a system of care delivery most appropriate for patients with a predictable illness/death trajectory, such as terminal cancer. This type of model, which is based on the ability to predict the course of a terminal disease, does not fit the heart failure trajectory. In this article, we propose a new model of palliative care that conceptualizes palliative care as a philosophy of care that encompasses the unpredictable nature of heart failure.

No description available.

No description available.

A logarithmic spiral trajectory is not the optimum trajectory for a solar sailing space vehicle. Investigation of the governing equations showed that the performance of the solar sail depends on one parameter "a". This parameter "a", defined simply as the ratio of radial to tangential forces, was seen to be significant for two reasons: first, the logarithmic spiral is restricted to values of a = 2 √ 2 ; secondly, decreased values of "a" indicate better performance characteristics. For values of a < 2 √ 2 a new trajectory was generated and found to be more efficient than any logarithmic spiral trajectory. / Master of Science