Perceptions and Expectations of College Students Choosing to Become Peer Mentors

Peer mentoring programs are a popular means of supporting students in transition in higher education. The success of these programs is based on the students who decide to become peer mentors. Further, institutions often have a variety of peer mentoring programs on their campuses that create varying experiences. The intent on this study was to identify best practices for recruiting peer mentors. The study utilized a quantitative instrument designed to reflect what previous literature suggested had been the positive outcomes of peer mentoring. A total of 110 student leaders at the University of Tennessee, Knoxville participated in the study, representing 11 peer mentoring roles. Levels of influence were measured for 13 different factors hypothesized to affect a student’s decision to become a peer mentor. The results of the study suggested that the factors: helping fellow students, enhance leadership skills, and improve communication skills were most influential to college students choosing to become peer mentors. Additionally, it was found that different peer mentoring roles are influenced by factors at varying levels. Recommendations are provided to improve the efficiency and effectiveness of peer mentor recruitment campaigns. Recommendations include: creating a common marketing strategy for recruiting peer mentors at individual institutions, adjusting marketing strategies to recruit diverse peer mentors, intentionally recruiting to students who are mentees within a peer mentoring program, and developing a common recruitment timeline amongst peer mentoring roles at individual institutions

Quantitative estimates of fish abundance from boat electrofishing

Multiple removals by boat electro-fishing were used to estimate fish populations in non-wadeable habitats in New Zealand lakes and rivers. Mean capture probability was 0.47±h0.10 (± 95% CI) from 35 population estimates made with 2-7 successive removals. The relationship between the population estimate from the Zippin method (Y)and the number of fish caught in the first removal (X) was significant (adjusted r2=0.84, P<0.001; Figure 2). The least-squares regression was Y = 1.55X 1.23. Mean density ± 95% confidence interval for 13 fishing occasions was 30±27 fish 100 m- 2. Mean biomass of fish for sites was 78±39 g m-2 (range 29 to 245 g m-2). Koi carp comprised the largest proportion of the fish biomass wherever they were present. The high biomasses of koi carp estimated in these results (mean 56±33 g m-2) suggest that they can reach problematic abundances in New Zealand. Bioniass of spawning koi carp can exceed 400 g m-2

APPLICATIONS OF ACOUSTO-OPTIC DEMODULATION AND DECODING TECHNIQUES

This thesis describes the operation and performance of an acousto-optic demodulator system consisting of a laser source, an acousto-optic cell and a bi-cell detector. The bi-cell detector is made up of two photodiodes positioned side by side, separated by a small gap. Theory is developed to predict the following; the linear operating range for different gap sizes, absolute frequency sensitivity, system output in response to discrete phase changes, optimum gap size for phase demodulation, absolute descrete phase change sensitivity, the performance of the system in the presence of carrier noise and the effect of clipping the carrier signal on both frequency and phase modulated signals. A detailed model of the system has been written, using the software package Mathcad, which incorporates all the parameters that affect the performance of the physical system. The model has been used to study how the performance of the system changes as these parameters are varied. It is shown that the AO demodulator can be used in a number of ways; as a frequency demodulator, a phase demodulator and to demodulate digitally modulated signals, and that the optimum values of some parameters are different for each application. The model is also used to investigate the response of the system to a number of the most common forms of digital modulation. It is shown that it is possible, without any a priori knowledge of the signal, to identify each of these forms of modulation, and ultimately decode messages contained on the signals. The system can also be used to measure the frequency shift on pulse doppler radar. It is shown that the rms frequency error on a pulse using the AO demodulator is 150% better than that of existing systems. Experimental results are presented that are in good agreement with the results gained from both the theoretical and modelled analysis of the system. Finally suggestions are made for areas of further work on the signal processing of the output signals and possible uses of the demodulator in the future.DRA (Funtington

An Exploratory Study of Followership in New Hampshire High Schools

This study explores followership theory and practical application in schools, extending Robert Kelley’s previous research from business to education. The study investigates three questions: 1) What is the distribution of Kelley’s five followership types in schools? 2) What is the relationship between teachers’ followership types and their demographic characteristics? 3) What leadership functions support teacher followership? These questions were explored using a modified 20-item version of Kelley’s The Followership Questionnaire and open-ended responses from teachers. A total of 559 New Hampshire public high school teachers completed the survey. Results were analyzed for associations between teacher demographic characteristics and followership types. Teachers were selected for their expertise as educators, their existing leadership roles in classrooms, and their potential for positive impact on school-wide leadership from a follower position. This study provides research to support strengthening teacher followership as a means to improving school effectiveness and student achievement. The study found most teachers to be exemplary followers and recommends developing a new school-specific followership model and instrument to clarify teacher followership types compared to those in other industries

The Design and Development of a Capture Efficiency Test Facility By Using Tracer Gas Monitoring For Performance Testing of Kitchen Ventilation Systems

Effective kitchen ventilation systems are critical for removing hazardous pollutants generated during cooking to maintain acceptable levels of indoor air quality. Current indoor air quality standards specify air flow and sound ratings as the only metrics to analyze the performance of kitchen ventilation. Lawrence Berkeley National Laboratory has been working alongside ASTM to develop a test standard for analyzing the fraction of cooking pollutants removed by kitchen range hoods. RELLIS Energy Efficiency Laboratory (REEL) was given the opportunity to design, develop, and construct a capture efficiency test facility using tracer gas monitoring to analyze the performance of kitchen ventilation systems. REEL established seven sub-components of the testing facility based on the requirements outlined in the test standard developed by LBNL. The 4.34 m x 3.93 m x 3.05 m testing chamber was sized to best represent a residential kitchen, which can accommodate range hood flow rates up to 200 L/s. All components and necessary equipment and instrumentation were designed and selected to conform to the dimensional, measurement, and accuracy requirements outlined in the test standard. Testing procedures were developed and preliminary data for 5 kitchen range hoods were taken to qualify the room and to analyze the effects of range hood air flow, mounting height, and cooking surface temperature on capture efficiency. Air flow rates 150 cfm yielded capture efficiencies between 86-92%. Average capture efficiencies were 67.7% and 77.8% for mounting heights of 30” and 21” for flow rates < 150 cfm, respectively, while at air flow rates > 190 cfm, capture efficiencies were measured to be 88.2% (30”) and 90.3% (21”). At air flow rates < 130 cfm capture efficiencies were 66.4% and 55.6% for surface temperatures of 150 0C and 200 0C, respectively. At air flow rates > 160 cfm, capture efficiencies were measured to be 79.9% and 74.3%. It was found that capture efficiency increased with increasing air flow rates, and decreasing mounting heights (closer to cooking surface) and surface temperatures. Large differences in measured capture efficiencies at flow rates < 150 cfm suggests that cooking and ventilation parameters are more impactful at lower operating speeds

Adjunct extraposition: base-generation or movement?

It has been argued that extraposition from DP is derived differently according to whether a complement or an adjunct is extraposed, with complement extraposition being derived by movement and adjunct extraposition being derived via covert QR of the host DP plus Late Merge of the adjunct (Fox &amp; Nissenbaum 1999). We argue that adjunct extraposition is itself derivationally ambiguous, and may be derived either by movement of the adjunct or by base-generation of the adjunct in extraposed position. Accordingly, we argue for a relaxation of the strictly compositional view that nominal modification is always mediated by syntactic sisterhood. We argue that while base-generated extraposition is possible with quantificational host DPs, adjunct extraposition from definites must be derived by movement. This accounts for a number of asymmetries between extraposition from definites and from other types of DP, concerning reconstruction for Condition C, scope reconstruction, and information-structural restrictions on extraposition

RIPencapsulation: Defeating IP Encapsulation on TI MSP Devices

Internet of Things (IoT) devices sit at the intersection of unwieldy software complexity and unprecedented attacker access. This unique position comes with a daunting security challenge: how can I protect both proprietary code and confidential data on a device that the attacker has unfettered access to? Trusted Execution Environments (TEEs) promise to solve this challenge through hardware-based separation of trusted and untrusted computation and data. While TEEs do an adequate job of protecting secrets on desktop-class devices, we reveal that trade-offs made in one of the most widely-used commercial IoT devices undermine their TEE's security. This paper uncovers two fundamental weaknesses in IP Encapsulation (IPE), the TEE deployed by Texas Instruments for MSP430 and MSP432 devices. We observe that lack of call site enforcement and residual state after unexpected TEE exits enable an attacker to reveal all proprietary code and secret data within the IPE. We design and implement an attack called RIPencapsulation, which systematically executes portions of code within the IPE and uses the partial state revealed through the register file to exfiltrate secret data and to identify gadget instructions. The attack then uses gadget instructions to reveal all proprietary code within the IPE. Our evaluation with commodity devices and a production compiler and settings shows that -- even after following all manufacturer-recommended secure coding practices -- RIPencapsultaion reveals, within minutes, both the code and keys from third-party cryptographic implementations protected by the IPE.Comment: 13 pages, 3 figures, 6 table

Mineralization and Hydrothermal Alteration of the Korvilansuo Prospect, Hattu Schist Belt, Ilomantsi, Eastern Finland

The late Archean Hattu schist belt, located within the Ilomantsi greenstone belt, formed at approximately 2750 Ma and is composed of felsic volcanic and epiclastic deposits and hosts multiple diverse orogenic-style gold deposits. The Korvilansuo prospect is located within the southern portion of the schist belt and is situated between the Kuittila tonalite and the Silvevaara granodiorite intrusions. The deposit hosts hydrothermally-altered gold-bearing quartz-tourmaline veins located near the Korvilansuo shear zone. Korvilansuo is enriched in important ore minerals and metals such as gold, sulfides, and tellurides. A combination of structural, metamorphic and hydrothermal events occurring within the region contributed to mineralization of the deposit. The metamorphic grade of the deposit reached the upper greenschist to lower amphibolite facies based garnet-biotite geothermometry indicating peak temperatures of 570 ± 30 °C. Pressures of 2.9 – 4.2 kbar occurred at Korvilansuo at peak conditions. Hydrothermal alteration is highly prevalent within tonalite and mica schists. Extensive structural deformation is visible as the deposit lies within the brittle-ductile transition zone. Gold appears throughout the deposit, occurring in fractures of tourmaline-quartz veins, as well as disseminated throughout the mica schist samples alongside sulfides and as telluride compounds. Sulfides encountered in the Korvilansuo area include: pyrite, pyrrhotite, chalcopyrite, gersdorffite, arsenopyrite, and other minor phases. Tellurides occur primarily as tsumoite and other telluride minerals occur as residual disseminated phases within pore spaces. Three main fluid types are found within the deposit consisting of high-vapor, high salinity (approximately 27.7 wt. % NaCl), and low-salinity, aqueous-carbonic fluids. Vapor-rich fluids are the oldest, while the NaCl-rich inclusions were determined to be older than aqueous-carbonic fluids and may be responsible for transporting ore. Homogenization temperatures of the late low-salinity, aqueous-carbonic fluids are approximately 323 °C, with hydrothermal chlorites recording mineralization temperatures of up to 450 °C. Temperatures therefore suggest that mineralization occurred after peak metamorphic conditions