1025 research outputs found
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Off-Campus Study, Study Abroad, and Study Away in Economics: Leaving the Blackboard Behind
No full textFaculty-authored chapter: International Internships: Their Value and a Guide to Setting Them Up, by Matthew C. Rousu, Scott Manning. Pages 73-81 Chapter abstract: Study abroad is recognized as a high impact practice. There can be some issues with conventional study abroad that reduce a student’s learning, however. Having an internship while abroad can help increase the value of study abroad and provide the student with valuable experience that will help post-graduation. In this article, we discuss the value of international internships, discuss the program at Susquehanna University for providing them, and provide recommendations for those interested in offering these experiences to their students.https://scholarlycommons.susqu.edu/facultybooks/1091/thumbnail.jp
Diverse Experiences Having An Affect On The Way I Teach
Full text linkThe purpose of this study was how my experience, growing up in a diverse setting, helps me become the best teacher I can be. I chose to look at this issue because I grew up in a very diverse town and school district. Although, in my town, there were many different races surrounding one another. The Selinsgrove Area School District is predominantly Caucasian. In this case, I decided to observe different types of teaching/learning styles each student needed to succeed
Atmospheric River Case Studies in the U.S. Mid-Atlantic Region
Full text linkAtmospheric Rivers (ARs) are narrow bands of atmospheric moisture that bring a significant amount of precipitation to the impacted region. While ARs on the West Coast of the United States are more frequently analyzed, evaluation of the East Coast mid-Atlantic region is also important in understanding this phenomenon. East Coast ARs can be studied using the techniques already established to study West Coast ARs. Using 6-hourly MERRA-2 data with integrated water vapor transport (IVT) and integrated water vapor (IWV) thresholds, we developed an extended scale to account for the longer duration ARs that occur, an algorithm to study AR events from 2010-2020, and a case study approach to analyze Category 5 mid-Atlantic (38°N-42°N, 71.5°W-76.5°W) AR events. We developed 3 distinct methods for analyzing ARs over the region. All 3 methods classify AR duration in the same manner, but the differences stem from how IVT thresholds are identified and the inclusion (or not) of IWV as a threshold for AR identification. Method 1 identified 533 AR events from 2010-2020 with an average of 48.45 ARs/year. Method 2 identified 512 AR events with an average of 46.55 ARs/year. Method 3 identified 669 AR events with an average of 60.82 ARs/year. Method 1 was found to be unsatisfactory in its ability to capture ARs across the region. Methods 2 and 3 are used in different applications and are both successful in identifying ARs. We identified 18 Category 5 AR events from 2010-2020 and classified them into 3 types of ARs: “Typical” Events, Tropical Cyclone Events, and Summer Events. Each extreme case type has helped to develop an understanding of East Coast ARs in the mid-Atlantic area
Pollution Gone Viral: The Effects of the COVID-19 Lockdown on Microplastic Pollution in Our Waterways
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The Lethal Effects of Herbicides and Herbicide Residues on the Agriculturally Important Wolf Spider Pardosa milvina
Full text linkHerbicides are applied to commercial crops with increasing frequency and diversity yet are rarely tested for acute or chronic toxicity effects on beneficial non target species such as spiders We measured the lethal effects of chronic exposure to field relevant doses of herbicide treated soil on an agriculturally abundant wolf spider, Pardosa milvina. We tested six herbicides including atrazine, S-metolachlor, mesotrione, glyphosate, 2,4-D, and dicamba. We also tested a mixture of all six herbicides and a distilled water control. Spiders were housed individually in containers with topsoil previously sprayed with a recommended herbicide dosage or water control group To test for herbicide residue effects, we reared spiders under herbicides exposed to three aging treatments freshly applied herbicides, herbicides aged for 69 days under room temperature laboratory conditions (indoor aged) or aged for 69 days in a greenhouse with variable temperature, humidity, light exposure, and evaporative cycling (outdoor aged) (N=960; n= 40 spiders across 24 treatments) Spiders were maintained on these treated substrates for 48 days and fed crickets (Gryllodes sigillatus). We recorded daily mortality across all spider treatments during the testing period Mesotrione and combined herbicide treated spiders showed very high mortality within two weeks of exposure among both freshly applied and indoor aged soil treatments while mortality was modest across outdoor aged herbicide treatments. Our results indicate that some herbicides are arachnicides but require chronic and prolonged exposure to produce lethal effects. Further, soil bacterial communities alone were insufficient to break down herbicides or reduce their toxicity while photodegradation, bacterial action, temperature variation and evaporation cycles were sufficient to dramatically reduce toxicity during chronic exposure
A Study of the Impact of Walker Lake on the North Branch of Middle Creek Using Metrics Generated by Diatom Biofilm Communities
Full text linkMiddle Creek is a tributary of the main stem of the Susquehanna River, and its watershed is confined mostly to Snyder County. The upper reaches of the stream are defined by two major branches, the North Branch and the West Branch, each of which is interrupted by a reservoir, Walker Lake and Faylor Lake, respectively. Walker Lake is an impoundment of a deep V-shaped valley and is 9-10 meters deep at the dam, which allows it to be stratified in the summer and winter. Summer stratification produces an anoxic hypolimnion, which is drawn off by the bottom outflow dam into the North Branch. During September of 2019 and 2020, the hypolimnion of Walker Lake became anoxic and its outflow below the dam had a strong odor of hydrogen sulfide with deposits of iron (III) oxide-hydroxide covering the cobbles and small boulders. The purpose of this preliminary investigation is to explore the impact of the bottom outflow below the dam and at sample sites downstream before and after fall turnover on the diatom biofilm communities and use them as proxies for the state of the stream. We examined five sites on the North Branch: above the lake (1.5 km above the lake), Walker Lake, below the dam at its outflow, a site 1.2 km downstream called Old Bridge, and a site 3 km from below the dam called Swift Run Confluence. Field measurements, using a YSI 556 multimeter, of pH, conductivity, and % oxygen saturation showed clear impacts when the lake was stratified but began to moderate following fall turnover. The loss of alkalinity and conductivity were particularly noticeable. The alkalinity decreased by 35% between the above site (2,350 µeq/L) and below the dam (1,514.4 µeq). Before turnover, at the below site, biofilm diatoms were scarcely found such that the phytoplankter, Asterionella formosa, which had been flushed from the lake, was the most abundant diatom species encountered from the stones collected at the site. Following turnover, however, the biofilm community reestablished itself and was dominated by Achnanthidium minutissumum in November 2019. Metrics based on diatom community analysis before and after turnover suggest the above lake site was impaired by agriculture (indices indicating high levels of sedimentation and nutrient runoff), but the reservoir did not function as a sediment or nutrient trap. Instead, the downstream sites showed higher impairment than the above lake site