111,588 research outputs found
Doherty, H, VX34041
No full textThis record was harvested from a previous catalogue system and will be withdrawn in 2025. Information in this record may be superseded or incomplete.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/382088Surname: DOHERTY. Given Name(s) or Initials: H. Military Service Number or Last Known Location: VX34041. Missing, Wounded and Prisoner of War Enquiry Card Index Number: 37384.212583
Item: [2016.0049.14381] "Doherty, H, VX34041
Helping children think: Gaze aversion and teaching
No full textLooking away from an interlocutor's face during demanding cognitive activity can help adults answer challenging arithmetic and verbal-reasoning questions (Glenberg, Schroeder, & Robertson, 1998). However, such `gaze aversion' (GA) is poorly applied by 5-year-old school children (Doherty-Sneddon, Bruce, Bonner, Longbotham, & Doyle, 2002). In Experiment 1 we trained ten 5-year-old children to use GA while thinking about answers to questions. This trained group performed significantly better on challenging questions compared with 10 controls given no GA training. In Experiment 2 we found significant and monotonic age-related increments in spontaneous use of GA across three cohorts of ten 5-year-old school children (mean ages: 5;02, 5;06 and 5;08). Teaching and encouraging GA during challenging cognitive activity promises to be invaluable in promoting learning, particularly during early primary years
Doherty, F H (Francis Hugh), NX59762
No full textThis record was harvested from a previous catalogue system and will be withdrawn in 2025. Information in this record may be superseded or incomplete.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/382082Surname: DOHERTY. Given Name(s) or Initials: F H (FRANCIS HUGH). Military Service Number or Last Known Location: NX59762. Missing, Wounded and Prisoner of War Enquiry Card Index Number: 33434.212565
Item: [2016.0049.14375] "Doherty, F H (Francis Hugh), NX59762
Doherty, H F, [No Service Number]
No full textThis record was harvested from a previous catalogue system and will be withdrawn in 2025. Information in this record may be superseded or incomplete.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/382080Surname: DOHERTY. Given Name(s) or Initials: H F. Military Service Number or Last Known Location: [No Registration Number]. Missing, Wounded and Prisoner of War Enquiry Card Index Number: 12797.212559
Item: [2016.0049.14373] "Doherty, H F, [No Service Number]
A Wideband Four-Way Doherty Bits-In RF-Out CMOS Transmitter
No full textWe present a wideband, 12-bit four-way Doherty Cartesian digital transmitter (DTX) featuring an innovative 50%-LO signed I/Q interleaved up-conversion technique that enables close to perfect orthogonal I/Q summation. The DTX incorporates a compact four-way lumped-element Doherty power combining network to enhance its average efficiency at deep power back-off (DPBO). It comprises a signed second-order hold (SOH) interpolation filter to suppress the sampling spectral replicas significantly. The proposed DTX is realized in a 40-nm bulk CMOS and delivers a peak output power of 27.54 dBm with drain and system efficiencies of 46.35% and 30.77%, respectively, at 5.3 GHz. At 12 dB DPBO, the realized DTX demonstrates a drain efficiency (DE) of 41.74%-39.27% in a 5.2-5.5 GHz band, respectively. Its intrinsic I/Q image, LO leakage, and C-IMD3/H 3BB for a 200 MHz tone spacing over a 4.8-6.2 GHz band are-64,-65, and-69 dBc, respectively, without calibration. Applying a simple memoryless 2× 1-D digital pre-distortion, its error vector magnitude and adjacent channel leakage ratio are lower than-31 dB and-39 dBc, respectively, for a six-carrier '40 MHz 256-QAM OFDM' signal with 18 dBm average output power and a 41% average DE. The signed SOH functionality is verified employing a four-carrier '80 MHz 512-QAM OFDM' signal with spectral purity of better than-35 dBc, while its baseband sampling frequency is 675 MHz.Accepted author manuscriptElectronic
Doherty\u27s Legacy
No full textWilliam H. Doherty was an American electrical engineer, best known for his invention of the Doherty amplifier. Born in Cambridge, Massachusetts, in 1907, Doherty attended Harvard University, where he received his bachelor\u27s degree in communication engineering (1927) and his master\u27s degree in engineering (1928). He then joined the American Telegraph and Telephone Company Long Lines Department in Boston. He remained there for a few months before joining the National Bureau of Standards, where he researched radio phenomena. Doherty joined Bell Telephone Laboratories (now Bell Labs) in 1929 and, while there, worked on the development of high power radio transmitters that were used for transoceanic radio telephones and broadcasting
Visual signals and children's communication: negative effects on task outcome
No full textPrevious research has found that young children fail to adapt to audio-only interaction (e.g. Doherty-Sneddon & Kent, 1996), and perform difficult communication tasks better face-to-face. In this new study, children aged 6- and 10 year-olds were compared in face-to-face and audio-only interaction. A problem-solving communication task involving description of abstract stimuli was employed. When describing the abstract stimuli both groups of children showed evidence of face-to-face interference rather than facilitation. It is concluded that, contrary to previous research, for some communication tasks access to visual signals (such as facial expression and eye gaze) may hinder rather than help children’s communication
Cognitive demands of face monitoring: Evidence for visuospatial overload
No full textYoung children perform difficult communication tasks better face to face than when they cannot see one another (e.g., Doherty-Sneddon & Kent, 1996). However, in recent studies, it was found that children aged 6 and 10 years, describing abstract shapes, showed evidence of face-to-face interference rather than facilitation. For some communication tasks, access to visual signals (such as facial expression and eye gaze) may hinder rather than help children’s communication. In new research we have pursued this interference effect. Five studies are described with adults and 10- and 6-year-old participants. It was found that looking at a face interfered with children’s abilities to listen to descriptions of abstract shapes. Children also performed visuospatial memory tasks worse when they looked at someone’s face prior to responding than when they looked at a visuospatial pattern or at the floor. It was concluded that performance on certain tasks was hindered by monitoring another person’s face. It is suggested that processing of visual communication signals shares certain processing resources with the processing of other visuospatial information
Letter from H. R. Raymond, Marion, Alabama, to George D. Johnston, Shelbyville, Tennessee, March 10, 1863
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