The Effect of Broadleaf Canopies on Survey-grade Horizontal GPS/GLONASS Measurements

A study was conducted to empirically determine the degradation of survey-grade GPS horizontal position measurements due to the effects of broadleaf forest canopies. The measurements were taken using GPS/GLONASS-capable receivers measuring C/A and P-codes, and carrier phase. Fourteen survey markers were chosen in central Connecticut to serve as reference markers for the study. These markers had varying degrees of sky obstruction due to overhanging tree canopies. Sky obstruction was measured by photographing the sky with a 35mm reflex camera fitted with a hemispherical lens. The negative was scanned and the image mapped using an equal- area projection to remove the distortion caused by the lens. The resulting digital image was thresholded to produce a black-and-white image in which a count of the black pixels is a measure of sky-area obstruction. The locations of the markers were determined independently before the study. During the study, each marker was occupied for four 20-minute sessions over the period of one week in mid-July, 1999. The location of the study markers produced relatively long baselines, as compared with similar studies. We compared the accuracy of GPS-only vs. GPS&GLONASS as a function of sky obstruction. Based on our results, GLONASS observations did not improve or degrade the accuracy of the position measurements. There is a loss of 2mm of accuracy per percent of sky obstruction for both GPS only and GPS&GLONASS.

Volume 10, Number 3: September/October 2004

Page 2 - Users tell us what they think about library service, and library director Brinley Franklin explains why he thinks the library is a good investment. Page 3 - Pulitzer Prize-winning music critic Tim Page, once the beneficiary of the library’s music collections, is now a patron of the Music & Dramatic Arts Library. Page 4 - Donors to the Libraries during FY 2004 Page 5 - Remembering Theora Whetten, long-time Friend of the Libraries; welcoming new Friends, the Class of ‘55. Page 6 - Beach Society members include the Libraries in their estate plans. Stamford honors Estelle Feinstein. Page 7 - Jack & Virginia Stephens donate a collection of Connecticut town histories.

Morphological Considerations in Lingual Appliance Design: A Descriptive Study

Submitted in partial fulfillment of the requirements for a Certificate in Orthodontics, Dept. of Orthodontics, University of Connecticut Health Center, 1986

Volume 11, Number 3: September/October 2005

Page 2 – The University and its Libraries celebrate 125 years of growth and service to the citizens of Connecticut. • UConn joins the Center for Research Libraries, the nation’s oldest and most significant library consortium. Page 3 - A profile of Stanley Israelite recounts his civic contributions and his role as a creator of the Dodd Research Center. Page 4 - The Thomas J. Dodd Research Center celebrates its 10th anniversary with a series of special events. • The Pharmacy Library occupies new quarters in UConn’s new Pharmacy/Biology Building. Page 5 - The 2005 Connecticut Children’s Book Fair features a great lineup of authors and illustrators. Page 6 - Staff News • The Wharton Data Research Service is now available for financial research. Page 7 - Donors to the University Libraries, January 1 – June 30, 2005

Volume 11, Number 4: November/December 2005

Page 2 - The vice provost for University Libraries writes about the many efforts underway to archive electronic resources for future use. • The director of the Tri-Campus Libraries comments on freedom of speech & the academic library. Page 3 - Manuscripts from Archives & Special Collections record the recollections of a Civil War nurse, a Connecticut naturalist, and a prosecutor at the Nuremberg Trials. Page 4 - A WPA mural by James Daugherty is rescued and installed in the Jeremy Richard Library. • Access Services finds new ways to improve services for library users. Page 5 - A renovated UConn Health Center Library is transformed from a warehouse for print into an information commons. Page 6 - Staff news

Fort Richardson Ordnance Detonations and the Harbor Porpoise: A Case Study in Marine Mammal Bioacoustics

Hearing is extremely important for cetaceans because it is their “principal sense” (Weilgart, 2007) thus the harbor porpoise and other marine animals are highly dependent on sound for survival. This is why we should care about the impact of noise on animals like the harbor porpoise. Since sound travels so well in water, an explosion, sonar, boat noise, etc. can affect a very large area and thus many different species of marine mammals. Although military actions such as low frequency sonar have made recent news, noise has been affecting cetaceans, especially beaked whales, since at least 1991 (Weilgart, 2007). This study is an investigation of the possible impacts of artillery detonated on land on harbor porpoise hearing and covers some of the history of Fort Richardson, the legal and historical aspects and history of this type of concern, the science and physics of sound, marine mammal hearing and general biology of the harbor porpoise. Data were collected at the Fort Richardson Army base during June of 2007 by researchers from the University of Connecticut and the University of Rhode Island and will be used to determine the possible impacts that these detonations could have on the harbor porpoise.

This Was Not on the Syllabus!: An Examination of First-Year Urban Teachers' Self-Efficacy

Many first-year teachers find it difficult to reach the needs of all their students in part, because they feel their college coursework left them ill-prepared for the complexity they face in the classroom. This is particularly true among urban teachers who often face crowded classrooms of diverse students with a wide range of instructional needs. This study is a comparative case study of two University of Connecticut graduates during their first year teaching in urban schools. Using mixed-methods, the study draws on interviews, questionnaires, and videotape data shared as a part of a monthly teacher study group of similar graduates. I also draw on group conversations in which teachers discussed their ability to reach the needs of all of their students as this was related to their preservice coursework. My findings suggest that many first-year teachers feel university coursework failed to help them. One teacher felt it did not help her at all, while the other felt it helped her but she still could not meet all of her students' needs. Many first-year, urban teachers do not feel confident in the classroom as a result of their preparation from coursework. With this lack in confidence, the teachers may be more likely to leave their urban position, and this may contribute to the high turnover of teachers in urban placements.

Evaluation of Root Resorption Incident to Orthodontic Intrusion

Submitted in partial fulfillment of the requirements for a Certificate in Orthodontics, Dept. of Orthodontics, University of Connecticut Health Center, 1993

The Associations Between Social, Behavioral, and Health Risk Factors on a High School Student’s Decision to Pursue Post High School Plans

Background: Due to the relationship between SES and health, pursuing post high-school plans can lead to better future health outcomes for the student. The current paper assesses how behavioral and health risk factors, and family and social support, effect a student’s decision to pursue post high school plans. Methods: Data from the Youth Behavioral Component of the 2007 Connecticut School Health Survey were analyzed. Composite measures of exposure to/participation in violent behavior, mental and physical health, family/social support and substance abuse were created. The effects of these domains on the decision to pursue post high-school plans were assessed using logistic regression. Data were stratified by socioeconomic status. Results: Low SES students were more likely than high SES students to be doubtful for post high-school plans. Cocaine abuse emerged as the risk factor that put low SES students at the highest odds of not pursuing post high-school plans, followed by involvement in violent/aggressive behavior, and receiving less family/social support than their peers. Similar findings regarding violence and family/social support were found in the high SES group. Findings regarding substance abuse in the high SES group were not statistically significant. Discussion: Prevention programs regarding violence and substance abuse may have the added benefit of increasing the likelihood that high school students will make post high school plans. Preventing cocaine use among low SES students may be of particular importance. Violence prevention measures should be tailored to the target group. Adequate family/social support emerged as an encouraging factor for post high school plans.

Antimicrobial effect of our Glass Ionomer Cements

Submitted in partial fulfillment of the requirements for a Certificate in Orthodontics, Dept. of Orthodontics, University of Connecticut Health Center, 1993

Stability of Rapid Maxillary Expansion

Submitted in partial fulfillment of the requirements for a Certificate in Orthodontics, Dept. of Orthodontics, University of Connecticut Health Center, 1993

Evaluation of a 3-Dimensional Measurement System: A Method for Assessing Facial Asymmetry

Submitted in partial fulfillment of the requirements for a Certificate in Orthodontics, Dept. of Orthodontics, University of Connecticut Health Center, 1992

Assessment of Resting Force and Stiffness of Bucco-Facial Tissue in Adolescents

Submitted in partial fulfillment of the requirements for a Certificate in Orthodontics, Dept. of Orthodontics, University of Connecticut Health Center, 1978

A Study of the Teratogenic Potential of Oral Hormonal Pregnancy Tests in the White Rat

Submitted in partial fulfillment of the requirements for a Certificate in Orthodontics, Dept. of Orthodontics, University of Connecticut Health Center, 1976