Influence of experience and training on dental students’ examination performance regarding panoramic images.

Physician training has greatly benefitted from insights gained in understanding the manner in which experts search medical images for abnormalities. The aims of this study were to compare the search patterns of 30 fourth-year dental students and 15 certified oral and maxillofacial radiologists (OMRs) over panoramic images and to determine the most robust variables for future studies involving image visualization. Eye tracking was used to capture the eye movement patterns of both subject groups when examining 20 panoramic images classified as normal or abnormal. Abnormal images were further subclassified as having an obvious, intermediate, or subtle abnormality. The images were presented in random order to each participant, and data were collected on duration of the participants’ observations and total distance tracked, time to first eye fixation, and total duration and numbers of fixations on and off the area of interest (AOI). The results showed that the OMRs covered greater distances than the dental students (p<0.001) for normal images. For images of pathosis, the OMRs required less total time (p<0.001), made fewer eye fixations (p<0.01) with fewer saccades (p<0.001) than the students, and required less time before making the first fixation on the AOI (p<0.01). Furthermore, the OMRs covered less distance (p<0.001) than the dental students for obvious pathoses. For investigations of images of pathosis, time to first fixation is a robust parameter in predicting ability. For images with different levels of subtlety of pathoses, the number of fixations, total time spent, and numbers of revisits are important parameters to analyze when comparing observer groups with different levels of experience.

Three Essays on the Economics of International Migration [electronic resource].

requirements for Filipino performing artists, effectively closing this migration channel. I employ a difference-in-differences estimation strategy using the share of performing artists at baseline in each Philippine province as a continuous policy variable. International migration falls in response to the policy change by 1.2%. The effect on international migration is larger than the policy change itself would suggest, indicating the importance of spillovers across migrant occupations. Domestically, more children are employed, and adults are more likely to be unemployed or engaged in short-term work.

Human rights in El Salvador [microform] : hearings before the Subcommittees on Human Rights and International Organizations and on Western Hemisphere Affairs of the Committee on Foreign Affairs, House of Representatives, Ninety-eighth Congress, first session, July 26, 1983.

CIS Microfiche Accession Numbers: CIS 83 H381-89

The politicks on both sides, with regard to foreign affairs, stated from their own writings, and examined by the course of events. : With some observations on the present state of affairs in Great Britain, and the effects of our negotiations, for several years past.

Head-piece; initial.

Employment and inflation goals of the Humphrey-Hawkins act and the conduct of monetary policy [microform] : hearings before the Subcommittee on Domestic Monetary Policy of the Committee on Banking, Finance, and Urban Affairs, House of Representatives, Ninety-sixth Congress, first session, March 13 and 14, 1979.

Reuse of record except for individual research requires license from Congressional Information Service, Inc.

Proposed small saver deposit instruments [microform] : hearing before the Subcommittee on Financial Institutions Supervision, Regulation and Insurance of the Committee on Banking, Finance and Urban Affairs, House of Representatives, Ninety-sixth Congress, first session, May 7, 1979.

Reuse of record except for individual research requires license from Congressional Information Service, Inc.

Investigation of the flow over simple bodies at Mach numbers of the order of 20 /

"It is shown that adequate means are available for calculating inviscid direct and induced pressures on simple axisymmetric bodies at zero angle of attack. The extent to which viscous effects can alter these predictions is indicated. It is also shown that inviscid induced pressures can significantly affect the stability of blunt, two-dimensional flat wings at low angles of attack. However, at high angles of attack, the inviscid induced pressure effects are negligible."

Estuary numbers /

"September 1989."

Meat, Poultry, and Egg Products Inspection Act of 1982 [microform] : hearing before the Subcommittee on Livestock, Dairy, and Poultry of the Committee on Agriculture, House of Representatives, Ninety-seventh Congress, on H.R. 6062, August 17, 1982.

"Serial no. 97-AAAA."

Indian water rights [microform] : hearings before the Subcommittee on Administrative Practice and Procedure of the Committee on the Judiciary, United States Senate, Ninety-fourth Congress, second session ... June 22 and 23, 1976.

Reuse of record except for individual research requires license from Congressional Information Service, Inc.

Indian child welfare act of 1977 [microform] : hearing before the United States Senate, Select Committee on Indian Affairs, Ninety-fifth Congress, first session, on S. 1214 ... August 4, 1977.

Reuse of record except for individual research requires license from Congressional Information Service, Inc.

Amend the Indian self-determination and education assistance act [microform] : hearings before the United States Senate Select Committee on Indian Affairs, Ninety-fifth Congress, second session, on S. 2460 ... March 14 and 22, 1978.

Reuse of record except for individual research requires license from Congressional Information Service, Inc.

Hearing on child care [microform] : hearing before the Subcommittee on Human Resources of the Committee on Education and Labor, House of Representatives, One hundredth Congress, first session, hearing held in Washington, DC, on July 8, 1987.

"Serial no. 100-26."

U.S. food aid programs and world hunger [microform] : hearings before the Subcommittee on Foreign Agricultural Policy of the Committee on Agriculture, Nutrition, and Forestry, United States Senate, Ninety-ninth Congress, second session, July 15, August 14, and September 16, 1986.

CIS Microfiche Accession Numbers: CIS 87 S161-6