Visual cryptography encodes a secret binary image (SI) into shares of random binary patterns. If the shares are xeroxed onto transparencies, the secret image can be visually decoded by superimposing a qualified subset of transparencies, but no secret information can be obtained from the superposition of a forbidden subset. The binary patterns of the shares, however, have no visual meaning and h...

In digital watermarking, a watermark is embedded into a cover image in such a way that the resulting watermarked signal is robust to certain distortion caused by either standard data processing in a friendly environment or malicious attacks in an unfriendly environment. This work provides Digital image watermarking based on Fractional Fourier transform and two dimensional fast Fourier transform...

We thank Messrs G C Fox, M Hardingham, and J M Robinson for allowing us to study their patients. 1 Maw AR. Otitis media with effusion (glue ear). In: Kerr AG, Groves J, Evans NG, eds. Scott-Brown's otolaryngology. 5th ed. Vol 6. London: Butterworth, 1987:159-76. 2 Hinton AE. Surgery for otitis media with effusion in children and its relationship to parental smoking. J Laryngol Otol 1989;103:559...

For a simple Lie algebra g we define a system of linear ODEs with polynomial coefficients, which we call the topological equation of g-type. The dimension of the space of solutions regular at infinity is equal to the rank of the Lie algebra. For the simplest example g = sl2(C) the regular solution can be expressed via products of Airy functions and their derivatives; this matrix valued function...

MICHELLE SCOLLO VicHealth Tobacco Control Centre, 100 Drummond Street, Carlton, Vic 3053, Australia [email protected] 1 Silagy CPB, Gduo G, Scollo M, Borland R. Modelling the eVects of adopting a harm minimisation approach to smoking cessation. First International Meeting, Society forResearch into Nicotine and Tobacco, 22–23 August 1998. Copenhagen, Denmark. 2 Kawachi ICG, Stampfer MJ, Wil...

We present simple formulae for calculating the skewness and kurtosis of the aperture mass statistic for weak lensing surveys which is insensitive to masking effects of survey geometry or variable survey depth. The calculation is the higher order analog of the formula given by Schneider et al. (2002) which has been used to compute the variance of the aperture mass from several lensing surveys. A...

An important objective of health monitoring systems for tall buildings is to diagnose the state of the building and to evaluate its possible damage. In this paper, we use our prototype to evaluate our data-mining approach for the fault monitoring. The offset cancellation and high-pass filtering techniques are combined effectively to solve common problems in numerical integration of acceleration...

Program Committee K. Al-Begain, Univ. of Glamorgan (UK) A. Al-Dubai, Univ. of Glasgow (UK) H.R. Arabnia, Univ. of Georgia (USA) I. Awan, Univ. of Bradford (UK) J. Bahi, IUT de Belfort-Montbeiard (France) A. Boukerche, University of Ottawa (Canada) K. Djemame, Univ. of Leeds (UK) S. Jarvis, Univ. of Warwick (UK) H. Karatza, Univ. of Thessaloniki (Greece) P. King, Heriot-Watt Univ. (UK) H. Larija...

T he field of psychiatric epidemiology has a long, albeit often neglected, history—one that antedates the beginning of psychoanalysis. Klerman (1) and Weissman (2) have outlined 5 “generations” of epidemiologic research. The first dates back to 1885, when Jarvis (3) used hospital records and key informants in a Massachusetts town to determine the prevalence of treated and untreated mental disor...

Host nutritional variables were evaluated for their effects on the severity of crown and root rot of tomato caused by Fusarium oxysporum f.sp. radicis-lycopersici. Tomato (Lycopersicon esculentum Mill.) seedlings (cv. Bonnie Best) were grown in a pathogeninfested, soilless rockwool system in the greenhouse and were fertilized with a nutrient solution that was amended with macroand microelements...