351,296 research outputs found
A wireless multimedia system
No full textThe complexity, robustness, image and speech quality as well as packet multiplexing issues of a reconfigurable multi-media mobile communicator are addressed. The proposed moderate complexity motion-compensated Discrete Cosine Transform (DCT) based image communicator provides an image peak signal-to-noise ratio (PSNR) of 38 dB at an average bit rate of about 25 kbits/s. The speech codec used is a low-complexity 32 kbit/s CCITT G721 standard scheme. Bandwidth efficient 16 or 64level quadrature amplitude modulation (QAM) combined with embedded low-complexity binary Bose-Chaudhuri-Hocquenghem (BCH) forward error correction coding is deployed. The 20-slot packet reservation multiple access (PRMA) scheme used supports an extra 2.4 kbit/s low-rate data channel for each speech user, in addition to providing 5-6 video-phone channels. The ADPCM/DCT/BCH/16-QAM as well as 64QAM schemes provide nearly unimpaired speech and image quality for channel SNRs in excess of 30 dB and 38 dB, respectively
THE MICROWAVE SPECTRUM OF 2-CARBAHEXABORANE(9)
No full textPresent address of C. S. Cheung; Jet Propulsion Laboratory, California Institute of Technology, Paskdena, California 91103.""Author Institution: University of Southern CaliforniaThe microwave spectrum of 2-Carbahexaborane(9) has been studied in the range 8--38 gHz. Transitions of eight isotopic species were assigned. Dipole moment and the boron framework structure were determined
Cheung, S.-C, Kwan, P.-S., Kong Y.-C. Bencao yanjiu rumen (An Introduction to Pen-ts'ao Study)
No full textMétailié Georges. Cheung, S.-C, Kwan, P.-S., Kong Y.-C. Bencao yanjiu rumen (An Introduction to Pen-ts'ao Study). In: Journal d'agriculture traditionnelle et de botanique appliquée, 31ᵉ année, bulletin n°3-4, Juillet-décembre 1984. pp. 266-267
Cheung Kwan-hin and Bauer Robert S. : The representation of Cantonese with Chinese characters
No full textYau Shun-chiu. Cheung Kwan-hin and Bauer Robert S. : The representation of Cantonese with Chinese characters. In: Cahiers de linguistique - Asie orientale, vol. 33 2, 2004. pp. 251-268
Cheng Ting Au. (1993) : NG Ting Au. (1993) ; Cheung Yat-shing, Gan Yu'en : A Bibliography of Yue Dialect Studies I Cheung Yat-shing
No full textBauer Robert S. Cheng Ting Au. (1993) : NG Ting Au. (1993) ; Cheung Yat-shing, Gan Yu'en : A Bibliography of Yue Dialect Studies I Cheung Yat-shing. In: Cahiers de linguistique - Asie orientale, vol. 24 1, 1995. pp. 183-188
Cheng Ting Au. (1993) : NG Ting Au. (1993) ; Cheung Yat-shing, Gan Yu'en : A Bibliography of Yue Dialect Studies I Cheung Yat-shing
No full textBauer Robert S. Cheng Ting Au. (1993) : NG Ting Au. (1993) ; Cheung Yat-shing, Gan Yu'en : A Bibliography of Yue Dialect Studies I Cheung Yat-shing. In: Cahiers de linguistique - Asie orientale, vol. 24 1, 1995. pp. 183-188
manymome: An R package for Computing the Indirect Effects, Conditional Effects, and Conditional Indirect Effects, Standardized or Unstandardized, and Their Bootstrap Confidence Intervals, in Many (Though Not All) Models
No full textCheung, S. F., & Cheung, S.-H. (2024). manymome: An R package for computing the indirect effects, conditional effects, and conditional indirect effects, standardized or unstandardized, and their bootstrap confidence intervals, in many (though not all) models. Behavior Research Methods, 56(5), 4862–4882. https://doi.org/10.3758/s13428-023-02224-
Cheung Hung-nin Samuel et al.: A practical Chinese grammar
No full textBauer Robert S. Cheung Hung-nin Samuel et al.: A practical Chinese grammar. In: Cahiers de linguistique - Asie orientale, vol. 27 1, 1998. pp. 119-124
manymome: An R package for Computing the Indirect Effects, Conditional Effects, and Conditional Indirect Effects, Standardized or Unstandardized, and Their Bootstrap Confidence Intervals, in Many (Though Not All) Models
No full textCheung, S. F., & Cheung, S.-H. (2024). manymome: An R package for computing the indirect effects, conditional effects, and conditional indirect effects, standardized or unstandardized, and their bootstrap confidence intervals, in many (though not all) models. Behavior Research Methods, 56(5), 4862–4882. https://doi.org/10.3758/s13428-023-02224-
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