Examining the Interplay Between Spousal and Non-Spousal Social Support and Strain on Trajectories of Functional Limitations among Married Older Adults

Marriage is a key social status related to the distribution of later life disablement. One factor within the marital relationship thought to be consequential for disablement is social support from the spouse. Nonetheless, marriage is not inherently supportive and may also be a source of chronic strain. According to the social support/stress model spousal social support is expected to result in better functional health outcomes while spousal strain is hypothesized to produce poorer functional health in later life. Beyond spousal support and strain, marriage is also embedded in a broader web of emotionally close non-spousal ties that are also likely to serve as contexts for meaningful exchanges of support and strain. However, less is known about the importance of the contingencies between spousal and non-spousal support and strain for the disablement process. Using nationally representative data from a sample of older adults from the 2006-2012 waves of the Health and Retirement Study this dissertation examines the importance of spousal and non-spousal social support and strain for trajectories of functional limitations among older married men and women. Specifically, I analyzed the independent effects of social support and strain across spousal and non-spousal social domains, the interactive effects of domain-specific social support and strain, and the effects of cross-domain interactions between spousal support/strain and non-spousal support and strain. This research further considered whether the independent and interactive effects of social support and strain vary by gender. The results highlight that spousal and non-spousal support/strain are likely to have consequences for the disablement process, though the effects of social support and strain on functional limitations depend on the relationship domain in question and, in some instances, gender. Moreover, in some cases the effects of social support and strain were counterintuitive given the expectations of the social support/stress model. Advisor: David F. Warne

Examining the Interplay Between Spousal and Non-Spousal Social Support and Strain on Trajectories of Functional Limitations among Married Older Adults

Marriage is a key social status related to the distribution of later life disablement. One factor within the marital relationship thought to be consequential for disablement is social support from the spouse. Nonetheless, marriage is not inherently supportive and may also be a source of chronic strain. According to the social support/stress model spousal social support is expected to result in better functional health outcomes while spousal strain is hypothesized to produce poorer functional health in later life. Beyond spousal support and strain, marriage is also embedded in a broader web of emotionally close non-spousal ties that are also likely to serve as contexts for meaningful exchanges of support and strain. However, less is known about the importance of the contingencies between spousal and non-spousal support and strain for the disablement process. Using nationally representative data from a sample of older adults from the 2006-2012 waves of the Health and Retirement Study this dissertation examines the importance of spousal and non-spousal social support and strain for trajectories of functional limitations among older married men and women. Specifically, I analyzed the independent effects of social support and strain across spousal and non-spousal social domains, the interactive effects of domain-specific social support and strain, and the effects of cross-domain interactions between spousal support/strain and non-spousal support and strain. This research further considered whether the independent and interactive effects of social support and strain vary by gender. The results highlight that spousal and non-spousal support/strain are likely to have consequences for the disablement process, though the effects of social support and strain on functional limitations depend on the relationship domain in question and, in some instances, gender. Moreover, in some cases the effects of social support and strain were counterintuitive given the expectations of the social support/stress model. Advisor: David F. Warne

Searches for Long-lived Particles at the Tevatron Collider

Several searches for long-lived particles have been performed using data from p-pbar collisions from Run II at the Tevatron. In most cases, new analysis techniques have been developed to carry out each search and/or estimate the backgrounds. These searches expand the discovery potential of the CDF and D0 experiments to new physics that may have been missed by traditional search techniques. This review discusses searches for (1) neutral, long-lived particles decaying to muons, (2) massive, neutral, long-lived particles decaying to a photon and missing energy, (3) stopped gluinos, and (4) charged massive stable particles. It summarizes some of the theoretical and experimental motivations for such searches.Comment: submitted to Mod. Phys. Lett.

Physical Disability and Increased Loneliness among Married Older Adults: The Role of Changing Social Relations

Examining the social context of disablement, we investigated how changes in social relations affect loneliness among married older men and women. With longitudinal data on 914 married persons from the National Social Life, Health, and Aging Project (NSHAP), we found that changes in the quality of marital and nonmarital relations moderate the effect of disability on loneliness in unexpected ways. Increases in negative marital quality buffer the effect of physical disability, while increases in nonmarital support exacerbate it. Although not predicted by existing theory, these findings are consistent with some prior work suggesting that health-related stressors, like physical disability, condition the meaning of changes in social relations. We find, however, that negative social relations ameliorate loneliness only among disabled married men; disabled married women experience increased loneliness under similar circumstances. These differences have not been previously identified. We conclude by discussing the gendered nature of the social context of disablement

John Wesley and the Goal of Maximizing Shareholder Wealth

This paper explores the use of John Wesley sermon number 50, “The Use of Money,” in corporate finance class when discussing shareholder wealth maximization. Wesley provides a framework to help keep the focus on good stewardship and away from greed. The paper will first provide the background as to why Wesley’s teaching is appropriate for wealth maximization. The paper will then demonstrate the use of this sermon in class

Cadmium exposure and cancer mortality in the Third National Health and Nutrition Examination Survey cohort.

Objective This study examined prospective data from the Third National Health and Nutrition Examination Survey (NHANES III) cohort to investigate the relationship between cadmium exposure and cancer mortality, and the specific cancers associated with cadmium exposure, in the general population. Methods Vital status and cause of death through 31 December 2006 were obtained by the National Center for Health Statistics for NHANES III participants. The cadmium concentration of spot urine samples was measured and corrected for urine creatinine (uCd). Weighted Cox proportional hazards regression with age as the time metric was applied to estimate sex-specific adjusted HRs (aHRs) of mortality associated with uCd for all cancers and the cancers responsible for the most deaths in the USA. Estimates were stratified by smoking history and adjusted for education, body mass index and race. Results uCd was associated with cancer mortality (aHR per twofold higher uCd (95% CI), men: 1.26 (1.07 to 1.48); women: 1.21 (1.04 to 1.42)). In men, mortality from lung cancer, pancreatic cancer and non-Hodgkin lymphoma was associated with uCd; an association with leukaemia mortality was suggested. In women, associations were suggested with mortality due to lung cancer, leukaemia, ovarian and uterine cancer, but evidence was weaker than in men. Conclusions Cadmium appears to be associated with overall cancer mortality in men and women, but the specific cancers associated differ between men and women, suggesting avenues for future research. Limitations of the study include the possibility of uncontrolled confounding by cigarette smoking or other factors, and the limited number of deaths due to some cancers

QSO 0130-4021: A third QSO showing a low Deuterium to Hydrogen Abundance Ratio

We have discovered a third quasar absorption system which is consistent with a low deuterium to hydrogen abundance ratio, D/H = 3.4 times 10^-5. The z ~ 2.8 partial Lyman limit system towards QSO 0130-4021 provides the strongest evidence to date against large D/H ratios because the H I absorption, which consists of a single high column density component with unsaturated high order Lyman series lines, is readily modeled -- a task which is more complex in other D/H systems. We have obtained twenty-two hours of spectra from the HIRES spectrograph on the W.M. Keck telescope, which allow a detailed description of the Hydrogen. We see excess absorption on the blue wing of the H I Lyman alpha line, near the expected position of Deuterium. However, we find that Deuterium cannot explain all of the excess absorption, and hence there must be contamination by additional absorption, probably H I. This extra H I can account for most or all of the absorption at the D position, and hence D/H = 0 is allowed. We find an upper limit of D/H < 6.7 times 10^-5 in this system, consistent with the value of D/H ~ 3.4 times 10^-5 deduced towards QSO 1009+2956 and QSO 1937-1009 by Burles and Tytler (1998a, 1998b). This absorption system shows only weak metal line absorption, and we estimate [Si/H] < -2.6 -- indicating that the D/H ratio of the system is likely primordial. All four of the known high redshift absorption line systems simple enough to provide useful limits on D are consistent with D/H = 3.4 +/- 0.25 times 10^-5. Conversely, this QSO provides the third case which is inconsistent with much larger values.Comment: 18 pages, 5 figures, submitted to Ap

Unmanned Multiple Exploratory Probe System (MEPS) for Mars observation. Volume 2: Calculations and derivations

This volume of the final report on the unmanned Multiple Exploratory Probe System (MEPS) details all calculations, derivations, and computer programs that support the information presented in the first volume

Unmanned Multiple Exploratory Probe System (MEPS) for Mars observation. Volume 1: Trade analysis and design

This report presents the unmanned Multiple Exploratory Probe Systems (MEPS), a space vehicle designed to observe the planet Mars in preparation for manned missions. The options considered for each major element are presented as a trade analysis, and the final vehicle design is defined