Taxonomic and Seasonal Variation Among Extant Hyracoids Based on Dental Microwear Texture Analysis

A number of works have been published on habitats and diets of living hyraxes but much remains to be learned about the paleoenvironment contexts of the much larger, more dominant but now extinct forms of the order. Here, I analyze the dental microwear of modern hyraxes to assess dietary and ecological relationships among the four extant species of Procaviidae: Heterohyrax brucei, Procavia capensis, Dendrohyrax arboreus, and Dendrohyrax dorsalis. The purpose of this study was to establish an extant baseline series for the interpretation of microwear texture patterns, and inference of diets, of extinct members of the order. This was done by obtaining molds of cheek teeth from museum specimens and gathering point cloud data with a Sensofar white-light scanning confocal microscope to compare area-scale fractal complexity (Asfc) where Asfc is defined as change in surface roughness with scale of observation (Ungar et al., 2008, p. 402). According to Ungar et al. (2008), high Asfc values typically mean more heavily pitted surfaces than do lower values. The results from the global model where all four species, wet and dry seasons, and an interaction between species and seasons are considered reveal no significant distinctions among these factors. However, quantifying the Asfc levels for Procavia and Heterohyrax supports the original claim made by Walker et al. (1978) that seasonality differentiates the dietary patterns for Procavia but not italic\u3eHeterohyrax, which suggests species and season may in fact be signals for dietary variation. A larger sample number for species by season and a better control in samples is needed to determine whether or not the global model may be used for hyracoids

Letter to Merriss Cornell from Roscoe Walcutt, March 2, 1934

Letter from Roscoe Walcutt regarding the appraisal of O. B. Cornell\u27s estate.https://digitalcommons.otterbein.edu/cornell_ephemera/1136/thumbnail.jp

Letter to Geneva Cornell from Roscoe Walcutt, September 19, 1932

Printed letter to Geneva Cornell from Roscoe Walcutt about the enrollment of her nephew at Otterbein and tuition payment.https://digitalcommons.otterbein.edu/cornell_ephemera/1137/thumbnail.jp

Bill from Roscoe Walcutt to Geneva Cornell, April 5, 1935

Printed bill for $30 for fees regarding the estate of Otto B. Cornell.https://digitalcommons.otterbein.edu/cornell_ephemera/1138/thumbnail.jp

Drone Augmentation of Open Water Code-X Submerged Drowning Victim Recovery

A major gap exists in ocean rescue operations for drowning victim location and recovery when a bather fully submerges below the waterline. Among open water life-guarding this is known as a Code-X scenario. The current response procedure is a series of diving searches done by the initial responding lifeguard and later by a lifeguard search team, and if available, helicopter. By the time a team is dispatched and searching the operation is likely a body recovery and not a victim recovery. This is due to the critical time window for removing the victim from the water. Currently Volusia County Beach Safety utilizes EMT certified professionals to respond as backup in vehicles that patrol the beach to all ocean rescue emergencies. If these were outfitted with live video capable drones to aid in the search of a Code-X emergency the likelihood of victim location and survivability could be dramatically increased. This research project aims to address the potential lifesaving advantage of using drones to locate submerged drowning victims in the initial critical minutes of the emergency. The experiment design consists of using a lifelike water dummy which, when submerged 200 yards from waters edge in front of a lifeguard tower, will be responded on to simulate the Code-X. Once the responding lifeguard initiates the Code-X signal a drone will be deployed to aid in the search of the dummy, or in the control group, the drone will simply record the run. Future resulting research will aid in justifying use of drones in this specific ocean rescue operational procedure

Letter to Geneva Cornell from Roscoe Walcutt, October 24, 1933

Printed letter to Geneva Cornell from Roscoe Walcutt, with two additional letters that explain the settlement of Otto B. Cornell\u27s estate.https://digitalcommons.otterbein.edu/cornell_ephemera/1146/thumbnail.jp

Pepero Day: Creation and Evolution of a "Holiday"

This teaching case provides an overview of a reportedly manufacturer-created "holiday" celebrated by South Koreans every year. Based on the case, students will discuss the benefits and liabilities of the manufacturer's activities as well as identify any ethical breaches that may also have occurred. The case is oriented towards low to mid-level undergraduate students and can be taught within a one hour class with little required outside student preparation

Pepero Day: Creation and Evolution of a "Holiday"

This teaching case provides an overview of a reportedly manufacturer-created "holiday" celebrated by South Koreans every year. Based on the case, students will discuss the benefits and liabilities of the manufacturer's activities as well as identify any ethical breaches that may also have occurred. The case is oriented towards low to mid-level undergraduate students and can be taught within a one hour class with little required outside student preparation