Control of Variable Watermilfoil in Bashan Lake, CT with 2,4-D: Monitoring of Lake and Well Water.

Variable watermilfoil (Myriophyllum heterophyllum Michx.) has recently become a problem in Bashan Lake, East Haddam, CT, USA. By 1998, approximately 4 ha of the 110 ha lake was covered with variable watermilfoil. In 1999, the milfoil was spot treated with Aquacide®, an 18% active ingredient of the sodium salt of 2,4-D [(2,4-dichlorophenoxy) acetic acid], applied at a rate of 114 kg/ha. Aquacide® was used because labeling regarding domestic water intakes and irrigation limitations prevented the use of Navigate® or AquaKleen®, a 19% active ingredient of the butoxyethyl ester of 2,4-D. Variable watermilfoil was partially controlled in shallow protected coves but little control occurred in deeper more exposed locations. 2,4-D levels in the treatment sites were lower than desired and offsite dilution was rapid. In 2000, the United States Environmental Protection Agency (USEPA) issued a special local need (SLN) registration to allow the use of Navigate ® or AquaKleen® in lakes with potable and irrigation water intakes. Navigate® was applied at a rate of 227 kg/ha to the same areas as treated in 1999. An additional 2 ha of variable watermilfoil was treated with Navigate® in 2001, and 0.4 ha was treated in mid-September. Dilution of the 2,4-D ester formulation to untreated areas was slower than with the salt formulation. Concentrations of 2,4-D exceeded 1000 μg/ L in several lake water samples in 2000 but not 2001. Nearly all of the treated variable watermilfoil was controlled in both years. The mid-September treatment appeared as effective as the spring and early summer treatments. Testing of homeowner wells in all 3 years found no detectable levels of 2,4-D.(PDF contains 8 pages.

Web development with MongoDB and Node.js

This book is designed for developers of any skill level that want to get up and running using Node.js and MongoDB to build full featured web applications. A basic understanding of JavaScript and HTML is the only requirement for this book

Web Accessibility for Visually Impaired Users: Extending the Technology Acceptance Model (TAM)

The Technology Acceptance Model (TAM) is one of the most widely used models in the MIS literature. Verified by many studies, TAM asserts that the perceived ease of use and perceived usefulness of an information technology is instrumental in its adoption. While previous research has been valuable in explaining how and why the perception of ease of use and usefulness develops, this research does not include a growing number of users, namely the disabled. The large number of disabled technology users calls for scientific examination of ways to improve technology acceptance and usage in this population. Our study will address this need by extending TAM to include visually disabled users. Moreover, our study will expand TAM by examining information accessibility as a potential key determinant of ease of use and usefulness of web usage for people with and without visual disability

Web development with MongoDB and Node: build fast web applications for handling any kind of data

vii, 312 p. ; 25 cm

E-buildings -- An information management system for facilities management on the WPI campus.

The purpose of this project was to develop an information system which would help the Plant - Services Department at WPI to efficiently manage campus safety. By collecting data on fire equipment and hazardous waste sites, we were able to create a centralized database that would facilitate code compliance and - inspection fulfillment. This database, linked with 3D models of eight of the campus's main academic buildings creates an essential tool for locating and maintaining specific safety items. The end product of our - project is a three-dimensional map of the WPI campus, interactively linked through GIS and data basing - applications, which allows for the quick and efficient consultation of safety information. This system demonstrates the benefits of using state-of-the-art technology for streamlining the processes used to maintain safety within a college environment

Fidelity Investments website accessibility analysis

This Project was sponsored by Fidelity Investments Human Interface Design Group to address the issue of website accessibility for blind and low-vision users. We conducted a pre-study to identify accessibility problems on the career website: jobs.fidelity.com. We developed and implemented solutions to increase accessibility for both user groups. Our solutions were tested in a laboratory experiment conducted in the Fidelity usability lab that gathered performance metrics such as task time and completion, and through an online study survey

Managing Aged Animals in Zoos to Promote Positive Welfare: A Review and Future Directions

Improvements in veterinary care, nutrition, and husbandry of animals living in zoos have led to an increase in the longevity of these animals over the past 30 years. In this same time period, the focus of animal welfare science has shifted from concerns over mitigating negative welfare impacts to promoting positive welfare experiences for animals. For instance, providing opportunities for animals to exert agency, solve problems, or acquire rewards are all associated with positive welfare outcomes. Many common age-related changes result in limitations to opportunities for positive welfare experiences, either due to pain or other physical, cognitive, or behavioral limitations. This review aggregates information regarding common age-related physical and behavioral changes across species, discusses how age-related changes may limit positive welfare opportunities of aged animals in human care, and suggests potential management methods to help promote positive welfare for animals at all life stages in zoos and aquariums