Subharmonic Frequencies In Guitar Spectra

Throughout this thesis, evidence is shown that suggests the existence of subharmonic frequencies in the Classical Spanish Acoustic Guitar and Fender Squier Electric Guitar spectra. The classic subharmonic undertone series mimics that of the harmonic overtone series, except that the fundamental frequency is divided by integer values instead of multiplied by integer values. Subharmonics that do not fit the classic subharmonic undertone series criteria are still classified as subharmonics, although subharmonics that do fit the criteria are emphasized. Throughout this manuscript, the author’s original experimental procedures and results are presented. Individual tones were recorded on both guitars on every string from frets zero to twelve and were analyzed for subharmonics via Audacity software. The fundamental and subharmonic frequencies were recorded on Excel and the fundamental frequencies were divided by the subharmonic frequencies, thus yielding ratios. These ratios were used in two different charts that were color-coded based on value and if the ratios were within ten percent of an integer value. These charts suggest the frequent presence of the first and second subharmonics in both guitars, which is especially observed in the higher strings (G, B and high E strings)

Multimedia Techniques for Construction Education and Training

The current profession of civil engineering often focuses education and training on code compliance rather than constructability and construction techniques. Also, it is well accepted that it takes a decade or more for engineers to develop a high-level project construction understanding, that and many state departments of transportation rely on in-field training for entry-level inspectors, with little or no education provisions for contractors. This research investigated the use of time-lapse photography to develop training and education material that will improve the understanding of project construction and crucial quality control specifications of an entry-level engineer, contractor, or inspector. Overall, the project team has deployed more than 160 time-lapse cameras to capture and document various construction activities since the project inception in May 2015 on over 25 construction sites throughout the state of Indiana. This document uses time-lapse photography and other media forms to monitor construction projects such as roadway construction on US 31 in Carmel and Westfield, construction of mechanically stabilized earth walls, roundabout construction, and bridge demolition in West Lafayette and Cedar Grove in order to develop educational and training materials for engineering students, construction inspectors, and contractors. This is accomplished in this document through construction case studies, time-lapse images, YouTube videos, and references to relevant INDOT Standard Specifications. Additionally, the project team has acquired quantitative data on the effectiveness of utilizing time-lapse photography to better educate in a classroom setting. The project team discovered that time-lapse photography did indeed enhance the lecture and following its use, students showed improvement

Keeping a Spacecraft on the Sun-Earth Line

Measurements of Earth's atmosphere as it occults sunlight can be obtained advantageously from a spacecraft placed in the proximity of the Sun-Earth Lagrange point L2. Maintaining the condition of continuous solar occultation by all parts of the atmospheric disk requires that the displacement of the spacecraft perpendicular to the Sun-Earth line remains less than 200 km. However, the gravitational force exerted by the Earth s moon must be negated by propulsion in order to meet this rather tight constraint. We provide an estimate of propulsive force needed to keep the spacecraft coincident with L2, as well as estimates of velocity increments needed to maintain various trajectories in the close vicinity of L2

Clinical and preclinical translation of cell-based therapies using adipose tissue-derived cells

Adipose tissue is now recognized as an accessible, abundant, and reliable site for the isolation of adult stem cells suitable for tissue engineering and regenerative medicine applications. The past decade has witnessed an explosion of preclinical data relating to the isolation, characterization, cryopreservation, differentiation, and transplantation of freshly isolated stromal vascular fraction cells and adherent, culture-expanded, adipose-derived stromal/stem cells in vitro and in animal models. This body of work has provided evidence supporting clinical translational applications of adipose-derived cells in safety and efficacy trials. The present article reviews the case reports and phase I-III clinical evidence using autologous adipose-derived cells that have been published, to date, in the fields of gastroenterology, neurology, orthopedics, reconstructive surgery, and related clinical disciplines. Future directions and challenges facing the field are discussed and evaluated

MRI and Neuropsychological Correlates of Carbon Monoxide Exposure: A Case Report

A 45-year-old woman experienced long-term, chronic exposure to carbon monoxide in the restaurant kitchen where she was employed as a cook. After returning to the restaurant after 5 days off work, she noticed that her symptoms returned immediately; she then aired out the room and called the gas company. Approximately 6 hr after a leak was detected, the patient went to the hospital, where her carboxyhemoglobin was found to be within normal limits and results of a neurologic examination were described as normal. Based on her symptoms, the patient believed she had been exposed to CO for at least 1 year before the leak was discovered. Initially, she experienced flu-like symptoms, which eventually resolved. At the time of her first neuropsychological evaluation (17 months after the exposure was identified), her persisting complaints included difficulties in reading, writing, speaking and word retrieval. The test results were consistent with secondary frontal lobe dysfunction associated with subcortical disorders such as those seen after CO exposure. Results of a subsequent neuropsychological examination (29 months postexposure) showed slight improvement in performance, but her performance was still consistent with mild frontal/subcortical dysfunction. Although the initial screening of a brain magnetic resonance image (MRI) performed 15 months after the exposure was interpreted as being within normal limits, two subsequent blind reviews of the same scans identified multiple bilateral lesions in the basal ganglia, which were consistent with chronic CO exposure. We present this case as an example of the utility of MRI and neuropsychological examinations in detecting central nervous system dysfunction secondary to CO exposure

Letters between A. H. Yoder and W. J. Kerr, as well as letters of recommendation from Horace M. Campbell and E. G. Bunnell

Letters concerning a position at Utah Agricultural College, includes recommendations

Concise Review: Using Fat to Fight Disease: A Systematic Review of Nonhomologous Adipose‐Derived Stromal/Stem Cell Therapies

The objective of this Review is to describe the safety and efficacy of adipose stem/stromal cells (ASC) and stromal vascular fraction (SVF) in treating common diseases and the next steps in research that must occur prior to clinical use. Pubmed, Ovid Medline, Embase, Web of Science, and the Cochrane Library were searched for articles about use of SVF or ASC for disease therapy published between 2012 and 2017. One meta‐analysis, 2 randomized controlled trials, and 16 case series were included, representing 844 human patients. Sixty‐nine studies were performed in preclinical models of disease. ASCs improved symptoms, fistula healing, remission, and recurrence rates in severe cases of inflammatory bowel disease. In osteoarthritis, ASC and SVF improved symptom‐related, functional, radiographic, and histological scores. ASC and SVF were also shown to improve clinical outcomes in ischemic stroke, multiple sclerosis, myocardial ischemia, chronic obstructive pulmonary disease, idiopathic pulmonary fibrosis, chronic liver failure, glioblastoma, acute kidney injury, and chronic skin wounds. These effects were primarily paracrine in nature and mediated through reduction of inflammation and promotion of tissue repair. In the majority of human studies, autologous ASC and SVF from liposuction procedures were used, minimizing the risk to recipients. Very few serious, treatment‐related adverse events were reported. The main adverse event was postprocedural pain. SVF and ASC are promising therapies for a variety of human diseases, particularly for patients with severe cases refractory to current medical treatments. Further randomized controlled trials must be performed to elaborate potential safety and efficacy prior to clinical use. Stem Cells 2018;36:1311–1328Mesenchymal stem cells maintain homeostasis and may treat common diseases through homing, differentiation, and paracrine effects.Peer Reviewedhttps://deepblue.lib.umich.edu/bitstream/2027.42/146316/1/stem2847_am.pdfhttps://deepblue.lib.umich.edu/bitstream/2027.42/146316/2/stem2847.pd

Variable Speed Limit Study Upstream of an Indiana Work Zone with Vehicle-Matching

Managing traffic in workzones presents significant mobility and safety challenges for agencies. The goals of a workzone traffic management plan are to safely slow vehicles ahead of the workzone, maintain speeds that provide for the safety of motorists and construction workers, and manage the growth of queues. Variable speed limits have historically been presented as a technology that can dynamically regulate speed in response to prevailing traffic conditions. However, techniques used to evaluate the impact of variable speed limits typically use aggregated statistics such as mean and standard deviation to determine the “typical” speed reduction. This paper presents a new methodology to evaluate the impact of variable speed limit signage based on individual vehicle-matching. The speeds and speed changes of these matched vehicles were used to analyze individual driver response to the variable speed limits. This allows agencies to understand the impact variable speed limit signage has on the distribution of vehicle speeds. It was concluded that vehicles need to observe multiple signs prior to any tangible reduction in speed limit. Placing signs on both shoulders and in multiple longitudinal locations have a greater impact on speeds than a single sign