The international liner shipping industry has been undergoing major structural changes caused by a number of factors. Liner companies have responded to these challenges by engaging in mergers and acquisitions and by forming global strategic alliances. Many of these organizational changes have reportedly been undertaken to achieve, among other things, economies of scale. This paper systematically addresses two questions — whether there are economies of scale in international liner shipping, and if so, what are the implications of those economies for industry structure. To determine whether scale advantages exist, George Stigler's "Survivorship Principle" is used with current data in three phases. All three phases of the study show that increasing returns to scale are present. In each application of the survivorship test, small and medium sized firms experienced significant decline in their share of the industry's capacity, while the largest firms continued to gain market share over the 20-year test period. The existence of economies of scale at both the firm and plant level is most pronounced during the shorter 1987-1997 period, subsequent to significant regulatory changes. The study empirically verifies that economies of scale in liner shipping have been increasing in response to technology-driven productivity growth, regulatory changes, and higher world-wide trade flows. The pursuit of economies of scale also appears to be contributing to the consolidation occurring in the industry today via both mergers and acquisitions, and the formation of global strategic alliances. Lastly, the study discusses the implications of economies of scale on firm structure within the context of current industry economics, and evaluates business strategies presently being pursued. / Master of Arts

Smith Mountain Lake, Virginia supports a successful put-grow-take striped bass fishery. Empiric analysis of striped bass stocking has shown an inverse relationship between number of fingerling striped bass stocked and survival to age 1. Potential causes for this inverse relationship include largemouth bass predation on fingerling striped bass and mortality resulting from stocking stress. Cage studies performed in 1994 and 1995 quantified percentage of fingerlings lost due to hauling/handling stress. Mean mortalities ranged from 1.78% for Phase I fingerlings in 1994 to 99.5% for Phase II fingerlings (reared in a recirculating aquaculture system for increased size at stocking) in 1994. Mortality rates varied greatly and were probably directly related to length of transport and inadequate thermal tempering prior to stocking. Highest mortality occurred at transport times in excess of six hours and when receiving water was 5° C warmer than transport water. A trial in which Phase I fingerlings were caged without transport or temperature change resulted in no mortality. Predation mortality by largemouth bass was also considered as a source of poor first-year survival of striped bass in Penhook and Waterwheel stocking coves at Smith Mountain Lake. It was necessary to estimate largemouth bass population size, diet composition, and daily consumption (bioenergetic modeling) to determine the total number of striped bass lost to predation. Diet analysis revealed that age-0 striped bass made up a maximum of 2.5% of largemouth bass diets in the month following stocking; adult alewives constituted more than 60% by weight. The estimated number of striped bass lost was only 360 (0.1%) in 1994 and 3062 (1.2%) in 1995. Bioenergetic simulations demonstrated that predation could become significant in the unlikely event that the contribution of striped bass to largemouth diets increased to 10% or more. Based on results from diet analysis and a prey preference laboratory study, alewives appear to buffer predation of age-0 striped bass during the month after stocking. In 1994 and 1995, neither stocking stress associated with the typical Phase I fingerling stocking procedure nor largemouth bass predation resulted in substantial mortality of stocked fingerling striped bass. / Master of Science

No description available.

After cancer patients have completed active cancer treatment, they have specific follow-up care needs. These needs include ongoing surveillance for new and recurring cancers, managing the side effects of cancer treatment, and psychosocial concerns (Rushton et al., 2015). In the past, cancer centres and oncology specialists provided follow-up care; however, new models of care are needed because cancer centres can no longer provide treatment and follow-up care to all cancer survivors (Jefford et al., 2022). To allocate health care resources, low risk cancer survivors (i.e., breast and colorectal cancer survivors) are being discharged from cancer centres after primary treatment back to their primary care provider (PCP) for follow-up care. Survivorship care plans (SCPs) have been identified as a tool to help survivors and their PCPs with this transition (Rushton et al., 2015). SCPs generally consist of a treatment summary, a schedule for follow-up and surveillance tests, and general health recommendations (i.e., diet and exercise; Howell et al., 2011; Ruston et al., 2015). While SCPs are widely accepted, research on their effectiveness as transition tools has been inconclusive (Hill et al., 2019; Jacobsen et al., 2018). Some studies show positive, neutral, and negative impacts of SCP use, and there are three potential reasons for these mixed findings: 1) there is wide variety in the content, format, delivery, and timing of SCPs which adds considerable variance when studying the impact of SCPs; 2) the use of outcomes to measure the usefulness of SCPs as transition tools that are beyond the scope that information about treatment history and follow-up guidelines could impact and; 3) that SCPs are not effective as transition tools (Hill et al., 2019; Jacobsen et al., 2018). An important first step in clarifying whether SCPs are effective transition tools is to understand how SCPs are being used in real world practice (Hill et al., 2019; Jacobsen et al., 2018). The overall purpose of this study was to develop best practice recommendations for implementing SCPs. This was achieved through three study objectives: 1) to comprehensively identify barriers and facilitators perceived to influence SCP use among cancer survivors and primary care providers (PCPs); 2) to identify evidence-based approaches to address barriers and enhance facilitators of SCP use; and 3) to develop best practice recommendations that can be used by implementors of SCPs that are adaptable across different contexts. Article 1 presents the results of semi-structured interviews with breast and colorectal cancer survivors who had received a SCP at least 12 months prior to the interview. The interviews were based on the Theoretical Domains Framework, version two (TDF-2; Cane et al., 2012) and comprehensively identified barriers and facilitators of SCP use amongst breast and colorectal cancer survivors. Thirty cancer survivors (17 female, 13 male) participated in the 30–45-minute interviews, which were then analyzed using content and thematic analysis. Survivors who had received education about the purpose of SCPs and how to use them reported finding their SCP helpful and that they used it to schedule appointments and communicate with their healthcare providers. Barriers to SCP use that were reported by cancer survivors included having lost or not remembering receiving a SCP, not understanding the importance of their SCP, and wanting information about additional supports to be able to follow the SCP (e.g., regular contact from the cancer centre, avenues for peer support). Overall, study 1 found that in order to SCPs to be used as intended transition tools, survivors benefit from receiving education about how to use them and be informed of the expectation that they be actively involved in their follow-up care. Article 2 presents the TDF-based semi-structured interviews with primary care providers (PCPs). Thirteen PCPs completed 15-20 minute interviews, and content and thematic analysis was conducted. PCPs reported finding SCPs helpful and that they contained relevant information to provide follow-up care. A key facilitator of using the SCP was the table of follow-up tasks (e.g., mammography, colonoscopy) and their frequencies included in the SCP. Two significant barriers for PCPs using SCPs were: a) logistical issues with ordering follow-up tests and receiving results; and b) a lack of clear avenues to consult with oncology specialists (e.g., managing side effects of medications, actions that need to be taken when follow-up tests are abnormal). Overall, article 2 showed that PCPs appreciate and readily use SCPs, and contextual changes to facilitate clear avenues of communication between primary and tertiary care may be beneficial when implementing SCPs. Article 3 is a methodology article that presents a detailed explanation and rationale for the implementation science frameworks used and the data analysis chosen. The TDF-2 and Behaviour Change Techniques Taxonomy (BCTTv1; Michie, et al., 2008; Michie et al., 2013). The Human Behaviour Change Project researchers have empirically linked the 14 TDF domains to behaviour change techniques (BCTs), which allowed for multiple options to be developed to address barriers (and promote facilitators) of SCP use among breast and colorectal cancer survivors and PCPs (https://theoryandtechniquetool.humanbehaviourchange.org/tool; Michie et al., 2021). Using the TDF and BCTTv1 showed a dynamic between oncology specialists (e.g., oncologists, oncology nurses), cancer survivors, and PCPs that is involved in ensuring SCPs are implemented in an optimal way. A logic model was used to organize the barriers and enablers into different phases of SCP development, content, delivery, and use by PCPs and cancer survivors in their follow-up care (Mills et al., 2019). A flowchart organizing the recommendations of implementing SCPs was developed, and comprised 10 steps representing interrelationships between cancer centers, PCPs, and cancer survivors. The detailed methodology article also includes lessons learned and suggestions for implementation science researchers using the TDF and BCTTv1. Finally, article 4 is written for anyone looking for guidance implementing SCPs or improving upon how SCPs have been implemented already. It differs from article 3 in that it provides practical solutions for implementers. Because this work generated many recommendations, article 4 provides a worked example of how to use the results of this study. It is written in a way that outlines who would benefit from using the recommendations, and how to use the flow chart to narrow down the recommendation to those most relevant to implementors. The recommendations are organized into one of the 10 relationships in the flow chart, along with the purpose of the recommendations, how to implement it, to whom the recommendation targets, and those responsible for enacting the recommendations. The core factors associated with facilitating SCP use by PCPs and cancer survivors were: a) a treatment summary and follow-up guidelines included in the SCP; b) SCP provided to both cancer survivors and their PCP; and c) educating cancer survivors about their role as self-managers of their own care and the expectation that they participate in their follow-up cancer care. Future research on the usefulness of SCPs in follow-up care should include detailed information about the content, format, and receivers of SCPs and the outcomes most realistically influenced by the information included in SCPs. Before throwing the proverbial baby out with the bathwater, the implementation of SCPs requires additional standardization before meaningful investigation of their effectiveness as transition tools can be conducted.

No description available.

In this dissertation I engage in life writing and literary métissage (Chambers, Hasebe-Ludt, Leggo, & Sinner, 2012; Hasebe-Ludt, Chambers, & Leggo, 2009) to explore and exemplify mindful, aesthetic, and compassionate practices for working through moments of crisis (Kumashiro, 2010) in teaching and learning. The dissertation is designed as a four-strand braid and organized around the active verb “practising” to dig deep into the dynamic, and often difficult, processes of teaching and learning: (1) Practising Vulnerability; (2) Practising Discomfort; (3) Practising Mindfulness; and (4) Practising Compassion. Each strand is composed of different genres of life writing: theoretical and analytical introductions, letter writing, journal pieces, comics, photos, poetry, creative non-fiction, collages, scenes from a play, and an alphabet book. The multimodal life writing pieces are worked examples (Gee, 2010) of contemplative practices and pedagogical praxis. Life writing offers concrete ways to practise mindfulness, reflection, and reflexivity, which, in turn, invite a more awakened, critical, and compassionate stance as an educator. If teachers want to move beyond simply promoting the importance of reflective practice, wellbeing, self-actualization, and compassion to their students then we need to show more teachers (and teacher educators) the messy process of doing so themselves. Reading life writing is a starting point for teachers at all stages in their careers to imagine how they could, or already do, engage in similar processes and invite them to cultivate compassion and self-compassion as a grounding stance for their life projects as teachers, learners, and human beings. My autoethnographic teacher inquiry (Cochran-Smith & Lytle, 2009) was prompted when I encountered “troubling” (Kumashiro, 2009) tensions when first teaching about homophobia and transphobia to teacher education students at a faculty of education on the Canadian prairies. I began to explore the vulnerability and discomfort of this teaching moment from an experimental (Davies, 2011), multimodal (Kress & Street, 2006; Pahl & Roswell, 2006), critical literacy stance (Janks, 2010; Vasquez, Tate, & Harste, 2013). My inquiry shifted after a diagnosis of breast cancer, which became an opportunity for me to awaken to more mindful, empathetic, and compassionate ways of being, living, teaching, and researching. / February 2017

Radiotherapy has been shown to increase the subsequent risk of heart disease among survivors of breast cancer, but little is known about factors, other than the dose of radiation delivered to the heart, which determine the magnitude of the risk. In addition, survivors of teenage and young adult cancer are internationally acknowledged as an understudied population, and limited information is available on their late health risks. This thesis sought to utilise the largest observational datasets available to date for these populations: the Collaborative Group on Observational Studies of Breast Cancer Survivors and the Teenage and Young Adult Cancer Survivor Study. These were used to firstly characterise the radiation-related risks of heart disease and lung cancer, and secondly to provide an overview of the long-term risk of heart disease for the entire spectrum of cancers diagnosed in teenagers and young adults aged 15 to 39. Initially, a methodology study and systematic review demonstrated that selection effects and other biases can be very problematic during analyses of observational cohorts, particularly when using a radiotherapy comparison. However, in the case of heart disease and lung cancer, one can take advantage of the breast being a paired organ and use a laterality comparison, particularly when laterality played little effect in treatment selection. This comparison was used throughout the analyses of breast cancer patients. This thesis demonstrated that adjuvant radiotherapy for breast cancer significantly increased the risk of heart disease among women with left-sided breast cancer and those patients with ipsilateral lung cancer. Interestingly, younger women were at the highest risk of heart disease, and a progressive proportional decrease in risk with increasing age at diagnosis was found, which has not been shown before. It also suggested that radiotherapy and chemotherapy combined may further increase the risk of heart disease among breast cancer patients. Survivors of teenage and young adult cancer, particularly Hodgkin lymphoma, were at a significantly raised cardiac mortality risk compared to the matched general population. The findings of this thesis provide evidence to support continued follow-up for cancer patients, as survivors were found to be at a substantial risk into the second or third decade after treatment. It has permitted the detection of groups of individuals at particularly increased risks, for example younger patients and survivors of Hodgkin lymphoma diagnosed in teenagers and young adults, for whom closer monitoring for late effects or measures to reduce the risk, such as adaptations to treatment, may be appropriate. Finally, evidence was also presented to support the development of clinical follow-up guidelines specifically for survivors of teenage and young adult cancer.

Background: Behavioral interventions and evidence based guidelines along the cancer control continuum can reduce the burden of cancer. Objectives: This dissertation aims to increase our understanding of colorectal cancer screening (CRCS) decisional conflict and breast cancer survivorship care. This project: 1) assesses CRCS decisional conflict in a general population, 2) uses the Theory of Triadic Influence to model and evaluate direct and indirect associations between CRCS decisional conflict and colonoscopy adherence, 3) assesses post-treatment breast cancer care. Methods: Data from a questionnaire administered to randomly selected adults, 50-75 years, living in six MN communities (N=1,268) and the 2010 Behavioral Risk Factor Surveillance System (BRFSS) (N=1,024, women ages 27-99) were used. Multivariable logistic regression was used to identify characteristics associated with high CRCS decisional conflict; then structural equation modelling (SEM) was performed to assess direct and indirect associations of CRCS decisional conflict and colonoscopy adherence. Using BRFSS data, multivariable logistic regression was performed to assess the association between years since diagnosis and the type of clinician providing the majority of care for breast cancer survivors after treatment completion. Results: Greater colonoscopy barriers (OR=1.04; 95% CI: 1.02-1.05) and CRCS-specific confusion (OR=1.12; 95% CI: 1.10-1.15) as well as a healthcare provider not discussing CRCS options (OR=1.67; 95% CI: 1.18-2.37) were associated with increased odds of high CRCS decisional conflict. A similar relationship was found in the SEM analyses: both greater levels of perceived colonoscopy barriers and CRCS confusion were associated with higher decisional conflict (standardized total effects=0.42 and 0.39, respectively, p-values < 0.01). CRCS decisional conflict was associated with increased non-adherence to colonoscopy. This relationship was mediated by CRCS-specific self-efficacy and intention (standardized total effect=0.14, p-value <0.01). Among breast cancer survivors, women 0–1 and 2–3 years since diagnosis were 2.1-2.6 times more likely to have a cancer-related clinician providing the majority of care compared to women 6+ years since diagnosis (95% CIs: 1.0-4.3; 1.4-4.6). Conclusions: Decreasing colonoscopy barriers and CRCS-specific confusion could decrease CRCS decisional conflict and ultimately increase CRCS uptake. National policies to move breast cancer follow-up care to a primary care provider might be well-received by cancer survivors.

Thesis advisor: Jane Flanagan / BACKGROUND: Breast cancer survivors experience a range of needs in the post-treatment phase as they transition into survivorship and beyond. The transition to survivorship requires breast cancer survivors to actively engage in self-managing their care, but little is known about patient engagement into survivorship care and what factors may contribute to this. Information is needed to further explore patient engagement into survivorship care, what factors may contribute to it and which patients are more likely to engage in their care and thus be better equipped to self-manage during survivorship. PURPOSE: The purpose of this study was to explore how demographic/personal factors and survivorship outcomes are related to and may contribute to patient engagement in early stage breast cancer survivors. METHODS: A cross-sectional, web-based self-report national survey was conducted using measures assessing personal/demographic factors, survivorship outcomes: health-related quality of life (HRQOL), fear of cancer recurrence (FCR), cancer health literacy (CHL) and two measures of patient engagement (patient activation (PA) and knowing participation in change (KPC). There was one open-ended question regarding additional survivorship concerns, not addressed in the previous survey items. Participants were recruited using Dr. Susan Love’s Army of Women Research Foundation and Craigslist. Data were analyzed via bivariate associations and backwards linear regression modeling in SPSS. RESULTS: The final sample included 303 participants (301 females and 2 males) with a mean age of 50.70 years. The sample was predominantly White, non-Hispanic and equally dispersed across the United States. Patient engagement, as represented by PA and KPC, was significantly correlated with 13 predictor variables and there were 10 predictor variables that resulted in significant ANOVA relationships with PA and KPC. In both the KPC and PA regression models, HRQOL significantly predicted for patient engagement. In the KPC regression model, social support and level of education also significantly predicted for patient engagement and receipt of a survivorship care plan contributed unique variance to the model. The open-ended question response categories included: physical concerns, mental health concerns, financial toxicity, social support, body image concerns, other concerns or no concerns/none. CONCLUSIONS: This study provides preliminary evidence that personal/demographic factors and survivorship outcomes may contribute to patient engagement in breast cancer survivors. Using assessment tools that measure factors such as HRQOL, social support, education level and patient engagement may give providers some insight as to which survivors may be ready to engage in survivorship care and those that may need more resources and/or support. Additional studies are needed to replicate and validate these results. More research is needed aimed at maximizing patient-centered care, patient engagement and ultimately improving SC. Keywords: breast cancer survivor, survivorship, patient engagement, health-related quality of life, social support. / Thesis (PhD) — Boston College, 2019. / Submitted to: Boston College. Connell School of Nursing. / Discipline: Nursing.

A hipertensão arterial pulmonar é caracterizada pela elevação anormal dos níveis pressóricos do território arterial pulmonar com conseqüente falência da função ventricular direita. A doença é altamente incapacitante, conforme demonstrado pela limitação nos testes de avaliação funcional, como o teste de caminhada de seis minutos. Entretanto, o impacto da doença na qualidade de vida dos pacientes não é totalmente conhecido. O objetivo desse estudo foi avaliar a qualidade de vida de pacientes com HAP através do questionário genérico SF-36, correlacionando os achados com os demais marcadores de gravidade da doença, assim como com a sobrevida. Os resultados mostraram que a QV apresenta forte correlação com TC6M e Classe Funcional e tem melhora significativa após tratamento específico. O Componente Físico do SF-36 teve significante associação com a sobrevida, permitindo concluir que a avaliação de qualidade de vida deve fazer parte da avaliação rotineira de pacientes com HAP / Pulmonary arterial hypertension (PAH) is a rare but insidious disease characterized by progressive pulmonary vascular remodelling with increased pulmonary vascular resistance ultimately leading to right ventricular failure e progressive dyspnea, leading to profound functional limitations, how is demonstrated by the six minute walk test. However, there is limited information about quality of life (QoL) in patients with PAH. The aim of this study was to evaluate the quality of life of PAH patients with the SF-36 generic questionnaire and compare the scores with the surrogate markers and identify the prognostic implication of this assessment. The results showed there was a good correlation with six minute walk test and functional class and there was a significant improvement in QoL after specific treatment. The physical component summary (PCS) of the SF36 QoLQ was significantly related to survival. Conclusion is that QoL is a useful tool for routine evaluation of PAH patients once it correlates with other surrogate markers, reflects treatment effect and predicts survival