Physical Sciences and Mathematics Commons^™

Human Impacts On Water Quality In Coldwater Spring, Minneapolis, Minnesota, Sophie M. Kasahara, E. Calvin Alexander Jr., Scott C. Alexander

Sinkhole Conference 2015

Coldwater Spring in Minneapolis, Minnesota was the water supply for Fort Snelling from the 1840s to 1920. The spring site has been declared a sacred site by some federally recognized Native American tribes. The site is managed by the National Park Service. This project has monitored the water chemistry of Coldwater Spring to document human impacts on the spring’s water quality. Temperature, dissolved oxygen, conductivity, pH and anions were monitored weekly and cations and alkalinity monitored monthly at Coldwater Spring and the adjacent Wetland A from 15 February 2013 through 18 January 2015. Coldwater Spring’s water flows through fractures in …

Karst Hydrogeologic Investigation Of Trout Brook, Joel T. Groten, E. Calvin Alexander Jr.

Sinkhole Conference 2015

Trout Brook in the Miesville Ravine County Park of Dakota County Minnesota is the trout stream with the highest nitrate concentration in the karst region of southeastern Minnesota. Water quality data from 1985 and 1995 (Spong, 1995) and from 2001, 2002, 2006, 2010, and 2014, collected by the Dakota County Soil and Water Conservation District (Dakota SWCD, 2014) document an increasing level of nitrate in Trout Brook. A karst hydrogeologic investigation was designed to measure nitrate levels at sampling points along the stream and to increase our understanding of the source and movement of nitrates throughout the length of Trout …

Tracer Studies Conducted Nearly Two Decades Apart Elucidate Groundwater Movement Through A Karst Aquifer In The Frederick Valley Of Maryland, Keith A. White, Michael K. Cobb, Thomas Aley, Ethan Weikel

Sinkhole Conference 2015

A pair of groundwater tracer studies at a single karst test site were completed 18 years apart. The results of these studies have provided evidence of both relatively rapid advective transport via conduits and an extreme capacity for dye storage and retardation. The tracer results, coupled with other subsurface investigation data, are used to develop a conceptual model for groundwater movement through this karst aquifer in the Frederick Valley of Maryland, as well as identify implications for remediation. Three fluorescent tracer dyes used in the initial study were detected in several background monitoring locations established for the second study conducted …

Hydrological And Hydrogeological Characteristics Of The Platform Karst (Zemo Imereti Plateau, Georgia), Zaza Lezhava, Nana Bolashvili, Kukuri Tsikarishvili, Lasha Asanidze, Nino Chikhradze

Sinkhole Conference 2015

The article discusses the hydrological and hydrogeological characteristics of the platform karst of Zemo Imereti plateau. The structural plateau of Zemo Imereti is the part of the intermountain plain karst zone of Georgia and one of the interesting parts of the karst relief development. The above mentioned karst region includes the easternmost part of western Georgia, which is characterized by peculiar natural conditions (relief, tectonics, climate, surface and underground streams) and represents one of the significant platform karst regions in the Caucasus. On the basis of the cartographic materials (GIS) analysis and borehole data the general scheme of hydrogeological setting …

Recharge Area Of Selected Large Springs In The Ozarks, Bill Duley, Cecil Boswell, Jerry Prewett

Sinkhole Conference 2015

Ongoing work by the Missouri Geological Survey (MGS) is refining the known recharge areas of a number of major springs in the Ozarks. Among the springs being investigated are: Mammoth Spring (Fulton County, Arkansas), and the following Missouri springs: Greer Spring (Oregon County), Blue Spring (Ozark County), Blue/Morgan Spring Complex (Oregon County), Boze Mill Spring (Oregon County), two different Big Springs (Carter and Douglas County) and Rainbow/North Fork/Hodgson Mill Spring Complex (Ozark County). Previously unpublished findings of the MGS and United States Geological Survey (USGS) are also being used to better define recharge areas of Greer Spring, Big Spring (Carter …

Hydrogeological Dynamic Variability In The Lomme Karst System (Belgium) As Evidenced By Tracer Tests Results (Karag Project), Amaël Poulain, Gaëtan Rochez, Vincent Hallet

Sinkhole Conference 2015

Paleozoic carbonate aquifers represent major groundwater resources in Belgium. Karstification processes affect most of them and Belgium counts many hydrologically active karst networks. Given the intrinsic vulnerability of such geological objects, comprehensive studies are required in order to improve their protection and management. The KARAG project (Karst Aquifer ReseArch by Geophysic, 2013-2017) aims to identify the specific dynamic of karst aquifers by using geophysical and hydrogeological tools. This research is funded by the Belgium National Fund for Scientific Research (FNRS) and conducted by the University of Namur, University of Mons and the Royal Observatory of Belgium. The LKS – Lomme …

Learning From Lionfish: Modeling Marine Invaded Systems, Matthew Johnston

Mathematics Colloquium Series

Simulating marine invaded systems requires broad consideration of physical oceanographic processes, such as ocean circulation patterns and temperature, and biological traits of the invader, such as their reproductive strategy and tolerances to their environment. Through this understanding of baseline biological and oceanographic function, models can be developed in order to forecast the incursion patterns of marine invasive species - helpful both to predict their spread as well as forewarn of impacts. To facilitate this understanding, computer simulation is useful in order to quickly and efficiently assimilate large biological and oceanographic datasets into digestible products. Data derived from such simulations are …

Life As An Nfl Statistician, Dennis Lock

Mathematics Colloquium Series

Over the last few years, the fields of statistics and mathematics have become more prevalent and popular in professional sports (with the help of mainstream books and movies like Moneyball). The use of advanced (and non-advanced) statistical methods is growing across the sporting landscape from the front office to the media, and even into business and ticket sales. This talk will discuss Lock’s experiences building an analytics department with the Miami Dolphins as well as the general role of statistics in sports today. It will also including the recent analytics boom in the front office framework, the coinciding need for …

A Nonlinear Filter For Markov Chains And Its Effect On Diffusion Maps, Stefan Steinerberger

Yale Day of Data

Diffusion maps are a modern mathematical tool that helps to find structure in large data sets - we present a new filtering technique that is based on the assumption that errors in the data are intrinsically random to isolate and filter errors and thus boost the efficiency of diffusion maps. Applications include data sets from medicine (the Cleveland Heart Disease Data set and the Wisconsin Breast Cancer Data set) and engineering (the Ionosphere data set).

Crowdsourcing Global Wastewater Data, Don Mosteller, Sam Cohen, Cory Nestor, Angel Hsu, Omar Malik

Yale Day of Data

No time to waste: Crowdsourcing global wastewater treatment data

Worldwide, over 80 percent of wastewater is discharged into water bodies without undergoing treatment, severely impairing human well-being and ecosystem vitality along the way. National performance on wastewater treatment is difficult to quantify and is poorly understood due to a lack of common definitions, poor data collection standards, and limited historical data. To address this, the Yale Environmental Performance Index (EPI), a research group that produces a biennial ranking of country-level environmental performance, developed a first-of-its kind national wastewater treatment indicator.[1]

The indicator assesses wastewater treatment performance for 183 countries, …

A Machine Learning Approach To Post-Market Surveillance Of Medical Devices, Jonathan Bates, Shu-Xia Li, Craig Parzynski, Ronald Coifman, Harlan Krumholz, Joseph Ross

Yale Day of Data

Post-market surveillance is a collection of processes and activities used by product manufacturers and regulators, such as the U.S. Food and Drug Administration (FDA) to monitor the safety and effectiveness of medical devices once they are available for use “on the market”. These activities are designed to generate information to identify poorly performing devices and other safety problems, accurately characterize real-world device performance and clinical outcomes, and facilitate the development of new devices, or new uses for existing devices. Typically, a device is monitored by comparing adverse events in the exposed population to a matched unexposed population. This research considers …

K-Mer Analysis On Developmental And Housekeeping Enhancer Peaks, Yunsi Yang, Anurag Sethi, Mark Gerstein

Yale Day of Data

The regulation of gene expression involves interaction between transcriptional enhancers and core promoters. However, the separation between developmental and housekeeping gene regulation remains unknown. Here, we present a method to detect if different core promoters exhibit specificity to certain enhancers within massively parallel assays for enhancer detection. We use k-mers of various length (3-8bp) as sequence features and compare k-mer frequencies between developmental and housekeeping enhancers. This method shows promoter specificity of enhancers in D. melanogaster.

Computing Invariant Dynamics For Differential Equations: Spectral Methods, Errors, And Computer Assisted Proof, J. D. Mireles James

Mathematics Colloquium Series

The qualitative theory of dynamical systems is concerned with studying the long time behavior discrete and continuous time models such as nonlinear differential equations. The long time behavior of such models is organized by landmarks called invariant sets. For complicated nonlinear equations these invariant sets are difficult to study via pen and paper analysis, and we typically employ numerical simulations to gain insights into the dynamics. If we now think of these computer assisted insights as mathematical conjectures, then it is natural to ask how we might obtain proofs. Since the conjectures themselves originate with the computer it is not …

Application Of An Education Research Lab (Erl) Model To A Community Sailing Program, Lauren Shure, Emilie Ney, Precious Broffee, Gerene K. Starratt, Andy Roberts

South Florida Education Research Conference

This presentation showcases the application of a university-based education research lab (ERL) model to the evaluation of a community sailing program for individuals with disabilities. Presenters conceptualize the ERL model as a mutually beneficial relationship between universities and community education agencies.

Session Report - Theme 5: Protection Of Arctic Marine Environment, Clive Cole

ShipArc 2015 Conference

No abstract provided.

Session Report - Theme 1: Polar Code, Jack Westwood-Booth

ShipArc 2015 Conference

No abstract provided.

The Place Of Joint Development In The Sustainable Governance Of The Arctic, Buba Bojang

ShipArc 2015 Conference

No abstract provided.

Beyond The Polar Code: Imo Measures For Assuring Safe & Environmentally Sound Arctic Navigation, J. Ashley Roach

ShipArc 2015 Conference

No abstract provided.

Forecasting The Big Picture: Arctic Ecosystems, Climate Change, Shipping & Fisheries, Mary S. Wisz

ShipArc 2015 Conference

No abstract provided.

Ship Generated Waste In The Arctic : Marine Debris, Marpol & The Polar Code, David Condino

ShipArc 2015 Conference

No abstract provided.

Arctic Maritime Activities In Changing Climatic & Market Conditions: Impacts On Local Community Security & Adaptation, Julia Olsen, Grete K. Hovelsrud

ShipArc 2015 Conference

No abstract provided.

Medium-Range Forecast Of The Arctic Sea-Ice Cover Using The Satellite Observation Data, Kimura Noriaki

ShipArc 2015 Conference

No abstract provided.

Arctic Preservation: Exploring The Effects Of Alternative Fuel Use, Jarrod Dewitz, Dimitrios Dalaklis, Aykut Ölçer, Fabio Ballini

ShipArc 2015 Conference

No abstract provided.

From Sensors To Sense Making: Leveraging Open-Access Scientific Data To Assess Arctic Maritime Risks, Mark A. Stoddard, Melanie Fournier Ph.D, Laurent Etienne Ph.D, Leah Beveridge Ph.D

ShipArc 2015 Conference

No abstract provided.

Offshore Oil And Gas Operations In Ice Infested Water-Service Vessel Configuration, Ice Management And Managerial Roles - A Comparative Study Of Operations In The West Greenland And The Kara Sea, Odd Jarl Borch, Norvald Kjerstad

ShipArc 2015 Conference

No abstract provided.

The Role Of Sustainability In Strategic Thinking In Norwegian Shipbuilding Industry, Faheem Ali, Annik Magerholm Fet, Dina Aspen

ShipArc 2015 Conference

No abstract provided.

Use Of Satellite Sar Observations Integrated In Arctic Maritime Situational Awareness, Hans Eilif Larsen

ShipArc 2015 Conference

No abstract provided.

Knowledge Discovery Of Human Activities At Sea In The Arctic Using Remote Sensing And Vessel Tracking Systems, Michele Vespe, Harm Greidanus, Carlos Santamaria, Thomas Barbas

ShipArc 2015 Conference

No abstract provided.

Satakunta University Of Applied Sciences As A Basis For Ensuring Safe & Sustainable Shipping In Changing Arctic Environment, Heikki Koivisto,

ShipArc 2015 Conference

No abstract provided.

Drivers Of Arctic Shipping & Marine Operation, Lawson W. Brigham Ph.D

ShipArc 2015 Conference

No abstract provided.