Heat Capacity Mapping Mission (HCMM)

There are no author-identified significant results in this report

Doctor of Philosophy

dissertationThis work seeks to improve upon existing methods for device-free localization (DFL) using radio frequency (RF) sensor networks. Device-free localization is the process of determining the location of a target object, typically a person, without the need for a device to be with the object to aid in localization. An RF sensor network measures changes to radio propagation caused by the presence of a person to locate that person. We show how existing methods which use either wideband or narrowband RF channels can be improved in ways including localization accuracy, energy efficiency, and system cost. We also show how wideband and narrowband systems can combine their information to improve localization. A common assumption in ultra-wideband research is that to estimate the bistatic delay or range, "background subtraction" is effective at removing clutter and must first be performed. Another assumption commonly made is that after background subtraction, each individual multipath component caused by a person's presence can be distinguished perfectly. We show that these assumptions are often not true and that ranging can still be performed even when these assumptions are not true. We propose modeling the difference between a current set of channel impulse responses (CIR) and a set of calibration CIRs as a hidden Markov model (HMM) and show the effectiveness of this model over background subtraction. The methods for performing device-free localization by using ultra-wideband (UWB) measurements and by using received signal strength (RSS) measurements are often considered separate topic of research and viewed only in isolation by two different communities of researchers. We consider both of these methods together and propose methods for combining the information obtained from UWB and RSS measurements. We show that using both methods in conjunction is more effective than either method on its own, especially in a setting where radio placement is constrained. It has been shown that for RSS-based DFL, measuring on multiple channels improves localization accuracy. We consider the trade-o s of measuring all radio links on all channels and the energy and latency expense of making the additional measurements required when sampling multiple channels. We also show the benefits of allowing multiple radios to transmit simultaneously, or in parallel, to better measure the available radio links

The psychological functioning in the COVID-19 pandemic and its association with psychological flexibility and broader functioning in people with chronic pain

Aims: People with chronic pain may be particularly vulnerable to the impact of the pandemic COVID-19, and psychological flexibility may protect them. This study investigates psychological functioning in the context of COVID-19, including fear and avoidance in the context of COVID-19, specifically its association with daily functioning, and the role of psychological flexibility, among people with chronic pain. Methods: Responses from 555 adults with chronic pain were collected through a cross-sectional online survey and analysed. Results: Eight out of ten participants reported significant depression and nearly nine out of ten reported significant functional impairment. COVID-19-related fear and avoidance significantly correlated with pain, pain-related disability, depression, and work and social adjustment (r=18-.32), as well as psychological flexibility processes, including pain acceptance, self-as-context, and committed action, |r|=.13-.30. COVID-19-related fear and avoidance and COVID-19-related interference were significant predictors of some measures of daily functioning beyond demographics and pain, β=.09-.14. However, these associations weakened when psychological flexibility processes were factored into the models, with fear of COVID-19 no longer being a significant predictor of pain-related disability or depression, and COVID-19 avoidance no longer a significant predictor of depression. Conclusions: The psychological functioning in the context of COVID-19 appears to be negatively associated with daily functioning in people with chronic pain, and is statistically significant in this regard. Psychological flexibility may have a role in these associations for people with chronic pain in the pandemic

Bostonia

Founded in 1900, Bostonia magazine is Boston University's main alumni publication, which covers alumni and student life, as well as university activities, events, and programs

Introduction to Trans and Gender Diverse Voices in Libraries

In the library profession, and in the world as a whole, the experiences of trans and gender diverse people often go unnoticed, hidden, and ignored. But we are here. Trans and Gender Diverse Voices in Libraries is entirely written and edited by trans and gender diverse people involved in the field: its fifty-seven authors include workers from academic and public libraries, special collections and archives, and more; LIS students; and a few people who have left the library profession completely. This book is not intended to be the definitive guide to trans and gender diverse experiences in libraries, but instead to start the conversation. It is our hope that this book will help trans and gender diverse people in libraries realize that they are not alone, and that their experiences are worth sharing. This book also demonstrates some of the reality in a field that loves to think of itself as inclusive. From physical spaces to policies to interpersonal ignorance and bigotry, the experiences recounted in this book demonstrate that the library profession continues to fail its trans and gender diverse members over and over again. You cannot read these chapters and claim that Safe Zone stickers and “libraries are for everyone” signs have done the job. You cannot assume that everything is fine in your workplace because nobody has spoken out. You can no longer pretend that we don’t exist

Impact of social defeat on NF-KB p-65 activation in liver: A study in C57BL/6J male mice

An increase in mood and anxiety disorders causes a demand to invent new medications and treatment strategies to reduce neuroinflammation in the brain and liver. The drug of interest, B-funaltrexamine (B-FNA) has shown to reduce jauntiness behavior in mice from a previous experiment. We currently are determining if Social Stress increases when a different strain or the same strain of mouse is introduced into the community of mice. This project, Repeated Social Defeat (RSD) has 2 test groups, Single Bout of Social Defeat and RSD to analyze different stress levels through NF-kB p65 Activation levels. This activation level was determined by using Western Blot Analysis. The Results of this experiment showed that the community of mice had increased stress levels regardless of the strain of mice. This experiment will be a footstep for the upcoming implementation of B-FNA as a therapeutic drug

Cosmic ray energy changes at the termination shock and in the heliosheath

Voyager 1 crossed the termination shock of the solar wind in December 2004 at 94 AU and currently measures the cosmic ray intensity in the heliosheath. To better understand this modulation region beyond the shock, where adiabatic energy changes should be small, we review the net effect of energy changes during the modulation process, including adiabatic deceleration in the solar wind, acceleration at the termination shock, and the possibility that stochastic acceleration in the heliosheath may also make a contribution

Bostonia

Founded in 1900, Bostonia magazine is Boston University's main alumni publication, which covers alumni and student life, as well as university activities, events, and programs