Browsing by Issue Date
Now showing items 4160 of 2208

Realtime computeraided multiplexed optical intensity correlator using Fresnel holographic filters and a liquid crystal television
(Elsevier, 1991)A realtime computeraided optical intensity correlator using multiplexed Fresnel holographic filters (FHFs) and a liquid crystal television (LCTV) is described. This technique is characterized by the following. The spatially ... 
Model reduction by generalised leastsquares method
(Institution of Engineering and Technology, 199107)The method of model reduction by leastsquares moment matching is generalised to include Markov parameters in the process. This is seen to enhance the flexibility of the method with very little extra computational requirement. ... 
Tracking novelty filter using transient enhancement of gratings in photorefractive BSO
(Elsevier, 199111)The operation of novelty filtering is demonstrated using a hybrid optical and digital system. Dynamic gratings are written in photorefractive Bi12SiO20 at 514 nm and read out at 633 nm. The transient properties of the ... 
Methods of estimating the discharge of gross solids from combined sewer systems
(IWA Publishing, 1992)Visible pollution discharged from two combined sewer overflows were studied using passive Trash Trap devices and the UK Water Research Centre Gross Solids Sampler. Relationships are presented for the number of visible ... 
Realtime optical intensity correlator using photorefractive BSO and a liquid crystal television
(Taylor & Francis, 1992)We demonstrate the implementation of an optical intensity correlator using Bi12SiO20 (BSO) as a dynamic holographic medium. The advantages of this correlator are large tolerance in the placement of input objects and BSO ... 
Binarization effects in a correlator with an amplitudecompensated matched filter
(Elsevier, 1992)The effects of binarization of the input and the reference data in a correlator with the amplitudecompensated matched filter have been investigated. Computer simulations show that with binarization the noise tolerance of ... 
The effect of optical bias on grating formation dynamics in photorefractive BSO
(Elsevier, 1992)We present experimental results describing the influence of optical bias on the transient characteristics of gratings formed in photorefractive BSO. A transient peak is evident, and the properties of this peak can be ... 
A tabular approach to the stability equation method
(Elsevier, 199201)A tabular method for reducing polynomial degrees by the stability equation criterion is given. It is the consequence of an interesting multipoint Taylor polynomial approximation property which is shown to hold for the ... 
Denitrification in anaerobic digesters: possibilities and influence of wastewater COD/NNOX ratio
(Taylor & Francis, 199209)Laboratoryscale completelystirred anaerobic digesters were fed with synthetic wastewaters containing nitrate and nitrite and with glucose as the only source of organic carbon in order to investigate and compare the ... 
Some further observations on the differentiation method of modal reduction
(Institute of Electrical and Electronics Engineers, 199209)The differentiation method of model reduction is shown to be equivalent to forming successive ratios of multipoint Taylor polynomial approximation of the numerator and denominator of the transfer function, respectively. ... 
Extracellular enzyme localization during interspecific fungal interactions
(Oxford University Press, 19921101)Confronted colonies of Phlebia radiata, P. rufa, Coriolus versicolor, Stereum hirsutum, Phanerochaete velutina and Hypholoma fasciculare showed spatially and temporally heterogeneous patterns of loccaseαnaphthol and ... 
Differential extracellular enzyme production in colonies of Coriolus versicolor, Phlebia radiata and Phlebia rufa: effect of gaseous regime
(Society for General Microbiology, 199212)The effects of different gaseous regimes on the growth rate and extracellular enzyme location in vitro of colonies of Phlebia radiata, Phlebia rufa and Coriolus versicolor are reported. The two Phlebia species showed similar ... 
Realtime edgeenhanced object correlation using incoherent readout of photorefractive BSO
(Elsevier, 1993)Realtime edgeenhanced image correlation using the incoherent readout of a dynamic hologram recorded in BSO crystal is reported for the first time. A system is described which records the Fresnel transform of the input ... 
Realtime color image correlation with a color liquidcrystal television and a Fresnel holographic filter
(Optical Society of America, 1993)Incoherent color image correlation with a multiwavelength Fresnel holographic filter and a color liquidcrystal television as a realtime input device is demonstrated. 
An optical matched filter using a quantized amplitude compensation technique
(Elsevier, 1993)Starting from the amplitudeencoded binary phaseonly filter, a 4grey level quantized amplitude compensated matched filter is proposed. Computer simulations show that amplitude quantization has little effect on the filter ... 
Optical pattern recognition using a synthetic discriminant amplitudecompensated matched filter
(Optical Society of America, 1993)A technique for optical pattern recognition using an amplitudecompensated matched filter is presented. With the synthetic discriminant function in a matched spatial filtering application an iterative technique is employed ... 
New matrix method for multipoint Pade approximation of transfer functions
(Taylor & Francis, 1993)A new way of formulating a multipoint Pad approximant of a linear system transfer function is given. It is seen to be very flexible and computationally efficient. The expansion points can be a mixture of real, complex, ... 
Optimal model reduction by multipoint Padé approximation
(Elsevier, 199301)A novel method of obtaining optimal reducedorder models of linear system transfer functions is presented. It uses the popular multipoint Padé approximation technique in an iterative way to generate efficiently the optimal ... 
Nitrate and nitrite reductions with anaerobic sludge using various carbon sources: glucose, glycerol, acetic acid, lactic acid and methanol
(Elsevier, 199308)Batchtests were used to determine the potentials of digested sludge to reduce nitrate and nitrite in the presence of five different carbon sources: glucose, glycerol, acetic acid, lactic acid and methanol. Ammonium ... 
Extension of matrix method for complete multipoint Pade approximation
(Institution of Engineering and Technology, 199309)A recent multipoint Pade approximation technique for linear system reduction is extended to include expansion points at infinity. The method is then seen to be completely general, covering the cases of real, complex, ...