1,724,576 research outputs found
[Letter from Gordon E. Henderson to Parren J. Mitchell - June 3, 1976]
No full textLetter from Gordon E. Henderson to Parren J. Mitchell discussing his dissatisfaction with the effectiveness of the Office of Minority Business Enterprise (OMBE). Included is a report by Men of Tomorrow, Inc. analyzing OMBE
Indoor Spatial Updating with Reduced Visual Information
No full textThe data are contained in a csv spreadsheet. There is an accompanying txt file that explains the columns in the spreadsheet. Please see the referenced article for more information about the methods.Spatial updating refers to the ability to keep track of position and orientation while moving through an environment. People with impaired vision may be less accurate in spatial updating with adverse consequences for indoor navigation. In this study, we asked how artificial restrictions on visual acuity and field size affect spatial updating, and also judgments of the size of rooms. Normally sighted young adults were tested with artificial restriction of acuity in Mild Blur (Snellen 20/135) and Severe Blur (Snellen 20/900 ) conditions, and a Narrow Field (8º) condition. The subjects estimated the dimensions of seven rectangular rooms with and without these visual restrictions. They were also guided along three-segment paths in each of the rooms. At the end of each path, they were asked to estimate the distance and direction to the starting location. In Experiment 1, the subjects walked along the path. In Experiment 2, they were pushed in a wheelchair to determine if reduced proprioceptive input would result in poorer spatial updating. With unrestricted vision, mean Weber fractions for room-size estimates were near 20%. Severe Blur but not Mild Blur yielded larger errors in room-size judgments. The Narrow Field was associated with increased error, but less than with Severe Blur. There was no effect of visual restriction on estimates of distance back to the starting location, and only Severe Blur yielded larger errors in the direction estimates. Contrary to expectation, the wheelchair subjects did not exhibit poorer updating performance than the walking subjects, nor did they show greater dependence on visual condition. If our results generalize to people with low vision, severe deficits in acuity or field will adversely affect the ability to judge the size of indoor spaces, but updating of position and orientation may be less affected by visual impairment.This research was supported by an NIH grant EY017835 to Gordon E. Legge and a University of Minnesota Doctoral Dissertation Fellowship to Tiana M. Bochsler.Legge, Gordon, E; Gage, Rachel, J; Baek, Yihwa; Bochsler, Tiana, M. (2015). Indoor Spatial Updating with Reduced Visual Information. Retrieved from the University Digital Conservancy, http://dx.doi.org/10.13020/D61013
Going Beyond Counting First Authors in Author Co-citation Analysis
Full text linkThe present study examines one of the fundamental aspects of author co-citation analysis (ACA) - the way co-citation
counts are defined. Co-citation counting provides the data on which all subsequent statistical analyses and mappings
are based, and we compare ACA results based on two different types of co-citation counting - the traditional type that
only counts the first one among a cited work's authors on the one hand and a non-traditional type that takes into
account the first 5 authors of a cited work on the other hand. Results indicate that the picture produced through this non-traditional author co-citation counting contains more coherent author groups and is therefore considerably clearer. However, this picture represents fewer specialties in the research field being studied than that produced through the traditional first-author co-citation counting when the same number of top-ranked authors is selected and analyzed. Reasons for these effects are discussed
Indoor Spatial Updating with Impaired Vision-Human Performance Data for 32 Normally Sighted Subjects, 16 Low Vision Subjects and 16 Blind Subjects
No full textData for each participant’s estimation of room dimensions are found in LeggeEtAl_RoomSizeEstimates.csv, the spatial updating data in LeggeEtAl_SpatialUpdatingEstimates.csv, and demographic data for each participant is in LeggeEtAl_SubjectDemographics.csv. Detailed information for each data file can be found in LeggeEtAl_Documention.txt. Please see the referenced article for more information about the methods.Spatial updating is the ability to keep track of position and orientation while moving through an environment. We asked how normally sighted and visually impaired subjects compare in spatial updating and in estimating room dimensions. Groups of 32 normally sighted, 16 low vision and 16 blind subjects estimated the dimensions of six rectangular rooms. Updating was assessed by guiding the subjects along three-segment paths in the rooms. At the end of each path, they estimated the distance and direction to the starting location, and to a designated target (a bean bag dropped at the first segment of their path). Spatial updating was tested in five conditions ranging from free viewing to full auditory and visual deprivation (see documentation for details). The normal and low-vision groups did not differ in their accuracy for judging room dimensions. Correlations between estimated size and physical size were high. Accuracy of low-vision performance was not correlated with acuity, contrast sensitivity or field status. Accuracy was lower for the blind subjects. The three groups were very similar in spatial-updating performance, and exhibited only weak dependence on the nature of the viewing conditions. Conclusions. People with a wide range of low-vision conditions are able to judge room dimensions as accurately as people with normal vision. Blind subjects have difficulty in judging the dimensions of quiet rooms, but some information is available from echolocation. Vision status has little impact on performance in simple spatial updating; Proprioceptive and vestibular cues are sufficient.Grant Support: NIH EY017835Legge, Gordon E; Granquist, Christina; Baek, Yihwa; Gage, Rachel. (2016). Indoor Spatial Updating with Impaired Vision-Human Performance Data for 32 Normally Sighted Subjects, 16 Low Vision Subjects and 16 Blind Subjects. Retrieved from the University Digital Conservancy, http://doi.org/10.13020/D6HP4G
Variations on the Author
Full text link“Variations on the Author” discusses two of Eduardo Coutinho’s recent films (Um Dia na Vida, from 2010, and Últimas Conversas, posthumously released in 2015) and their contribution to the general question of documentary authorship. The director’s filmography is characterized by a consistent yet self-effacing form of authorial self-inscription: Coutinho often features as an interviewer that rather than express opinions propels discourses; an interviewer that is good at listening. This mode of self-inscription characterizes him as an author who is not expressive but who is nonetheless markedly present on the screen. In Um Dia na Vida, however, Coutinho is completely absent form the image, while Últimas Conversas, on the contrary, includes a confessional prologue that moves the director from the margins to the center of his films. This article examines the ways in which these works stand out in the filmography of a director who offers new insights into the notion of cinematic authorship
Gordon, E C, NX92699
No full textThis record was harvested from a previous catalogue system and will be withdrawn in 2025. Information in this record may be superseded or incomplete. Visit this record in UMA's new catalogue at: https://archives.library.unimelb.edu.au/nodes/view/388224Surname: GORDON. Given Name(s) or Initials: E C. Military Service Number or Last Known Location: NX92699. Missing, Wounded and Prisoner of War Enquiry Card Index Number: 58163.210994
Item: [2016.0049.20517] "Gordon, E C, NX92699
Gordon, E C, NX92699
No full textThis record was harvested from a previous catalogue system and will be withdrawn in 2025. Information in this record may be superseded or incomplete. Visit this record in UMA's new catalogue at: https://archives.library.unimelb.edu.au/nodes/view/388223Surname: GORDON. Given Name(s) or Initials: E C. Military Service Number or Last Known Location: NX92699. Missing, Wounded and Prisoner of War Enquiry Card Index Number: 57931.210993
Item: [2016.0049.20516] "Gordon, E C, NX92699
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