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Biomedical subjects

B Dodd

Publications and source records attributed to B Dodd.

36 records · Page 2Linked to original sources
PubMed1988

Protective action guide for radioactive material transportation accidents.

This paper briefly describes a report which has been developed to enable protective action guidance to be determined for transportation accidents involving radioactive material. The protective action guide uses data from on-scene observations as input to a series of simple flow charts leading to protective action recommendations. Where the necessary data is unavailable or unknown, the guide uses the assumptions and results found in the authors' worst case hazards analysis report.

Accidents↗
PubMed1988

Hazards assessment of worst case transportation accidents involving typical radioactive material shipments.

This paper reports the results of a study performed for the Oregon Department of Energy. The objectives of the study were to characterize the range of radioactive material shipments through the state and to determine the worst radiological hazards which might arise if these shipments were involved in transportation accidents. The direct and indirect radiological hazards were analyzed for worst case accidents involving a total of 10 typical shipments. The direct hazard primarily involved the gamma radiation from the material, while the indirect hazard considered the airborne release hazards of inhalation/ingestion, cloudshine and groundshine. The general and specific assumptions used in the study are given, and the results are tabulated, giving doses and dose rates as a function of distance. The data from the study are being incorporated into a protective action guide for use by state and local emergency responders. This guide bases the protective actions on the available, observable data and on flow charts which use the worst-case assumptions for unknown data.

Accidents↗
PubMed1980

Hearing by eye.

Explore the source record for details and available documents.

Female↗
PubMed1980

Interaction of auditory and visual information in speech perception.

Two experiments investigated the role of stored auditory and visual information for unimodal speech perception tasks. The first experiment showed that hearing subjects performed better than deaf subjects on a lip-reading task, possibly because they could supplement lip-read stimuli with stored information derived from the auditory modality. The second experiment demonstrated that sighted subjects did not use stored visual information to supplement an auditory input when deleting mispronunciations, since their performance did not differ from that of congenitally blind subjects. The processing of visual (lip-read) information in speech perception is discussed.

Adolescent↗
PubMed1977

The role of vision in the perception of speech.

The ability of hearing adolescents to use speech-read information in order to report lists of CVC words presented in white noise was investigated. The conditions of stimulus presentation included were auditory and visual information in synchrony, out of synchrony, auditory input alone, visual input alone, and a condition where the information presented in the auditory input conflicted with the visual input. The results indicated that the amount and type of type of information reported varied according to the condition of presentation, and that vision provided a complementary source of information for the perception of speech.

Auditory Perception↗
PubMed1976

The phonological systems of deaf children.

Samples of a group of deaf children's spontaneous speech were used to derive phonological rules. The predictive value of some of the rules was assessed by asking another group of deaf children to lip-read and read nonsense words. The results indicated that the phonological systems of profoundly deaf children are partially rule-governed. There was also some evidence which suggested that lipreading was a major input to the deaf children's phonological systems.

Child↗
PubMed1975

Recognition and reproduction of words by Down's syndrome and non-Down's syndrome retarded children.

Children with Down's syndrome were compared with other severely retarded children on tests of recognition and reproduction of real and nonsense words after 0-, 15-, and 30-seconds delay. The results indicated that Down's syndrome children performed better on the recognition task, but worse on the reproduction task after delay, as compared with the other retarded children. It was hypothesized that the articulatory deficit in the Down's syndrome group is part of a general motor disability due to a difficulty in preprogramming sequences of movements.

Auditory Perception↗
PubMedDate not supplied

Auditory processing and phonologic disorder.

In a previous experiment, 30 children with speech disorder were categorized into three groups depending upon their surface phonologic error patterns: those whose errors reflected delayed development, those who consistently made nondevelopmental errors, and those whose realization of the same words was variable. The study reported here compared the three sub-groups' auditory processing skills with those of a group of control nonspeech-disordered children to test whether any particular group displayed evidence of auditory processing deficit. None of the speech-disordered groups performed any differently from the controls. The result is discussed in terms of the debate concerned with auditory processing as a cause of speech and language deficit.

Child↗