J. Barker

Publication List Details

Period

1951 - 2009

Number

45

Co-Authors

The CAVA Corpus: Synchronised Stereoscopic and Binaural Datasets with Head Movements (2009)

E. Arnaud, H. Christensen, Y. C. Lu, J. Barker, V. Khalidov, M. Hansard, ...

This paper describes the acquisition and content of a new multi-modal database. Some tools for making use of the data streams are also presented. The Computational Audio-Visual Analysis (CAVA)...

Communication in Computer Science Classrooms: Understanding Defensive Climates as a Means of Creating Supportive Behaviors (2008)

Kathy Garvin-doxas, J. Barker

All learning environments are characterized by numerous communication and interaction practices, which lend themselves to an overall characterization of the climate as defensive or supportive. A case...

Trust and Deception in Multi-agent Trading Systems: A Logical Viewpoint (2005)

Finnie, G., Sun, Z., Barker, J.

Trust and deception have been of concern to researchers since the earliest research into multi-agent trading systems (MATS). In an open trading environment, trust can be established by external...

The measurement of alpha(8) from event shapes with the DELPHI detector at the highest LEP energies (2004)

Abdallah, J., Abreu, P., Adam, W., Adzic, P., Albrecht, T., Alderweireld, T., ...

Hadronic event shape distributions are determined from data in e(+)e(-) collisions between 183 and 207 GeV. From these the strong coupling alpha(s) is extracted in O(alpha(s)(2)), NLLA and matched...

Precise measurement of the tau lifetime (2004)

Abdallah, J., Abreu, P., Adam, W., Adzic, P., Albrecht, T., Alderweireld, T., ...

The tau lepton lifetime has been measured with the e(+) e(-) → tau(+) tau(-) events collected by the DELPHI detector at LEP in the years 1991 - 1995. Three different methods have been exploited,...

Search for supersymmetric particles assuming R-parity non- conservation in e(+)e(-) collisions at root s=192 to 208 GeV (2004)

Abdallah, J., Abreu, P., Adam, W., Adzic, P., Albrecht, T., Alderweireld, T., ...

Searches for pair-production of supersymmetric particles under the assumption of non-conservation of R-parity with a dominant LL (E) over bar or (U) over bar(D) over bar(D) over bar term have been...

Acoustic confidence measures for segmenting broadcast news (1998)

J. Barker, G. Williams, S. Renals

In this paper we define an acoustic confidence measure based on the estimates of local posterior probabilities produced by a HMM/ANN large vocabulary continuous speech recognition system. We use this...

Acoustic confidence measures for segmenting broadcast news (1998)

J. Barker, G. Williams, S. Renals

In this paper we define an acoustic confidence measure based on the estimates of local posterior probabilities produced by a HMM/ANN large vocabulary continuous speech recognition system. We use this...

Bunched release of gases from oxide targets (1997)

Ravn, H L, Catherall, R, Evensen, A H M, Jonsson, O C, Kugler, E, Lettry, Jacques, ...

Targets made out of oxides of the alkaline earth metals have been shown at ISOLDE to be among the fastest targets for production of radioactive beams of the rare gas elements. In addition oxide...

Speculations on the influence of infecting phenotype on virulence and antibiotic susceptibility of Legionella pneumophila (1995)

Barker, J., Brown, M. R. W.

It is not clear how Legionella pneumophila, which is a ubiquitous aquatic organism not possessing a mammalian reservoir, evolved the ability to cause human disease. The unusual ecology of the...

Absolute calibration of small angle neutron scattering data using strong coherent scattering (1993)

Lee, D., Barker, J., Chen, S.

Typically, small angle neutron scattering (SANS) data is normalized to an absolute scale using secondary standards such as water, polymers, silica gels, or irradiated aluminum. Errors for this method...

Share prices and divestiture (1988)

Barker, J.

Divestiture activities arise when a firm sells part of its assets. Economic theory dictates that in a rational market such activity is wealth maximizing. This study considers the impact of...

The activity of imipenem on Legionella pneumophila, with a note on the treatment of two cases (1985)

Farrell, I. D., Barker, J., Chiodini, P. L., Hutchison, J. G. P., Geddes, A. M.

An in-vitro assessment of the activity of imipenem, a new carbapenem β-lactam antibiotic, was undertaken on isolates of Legionella pneumophila. The minimum inhibitory concentrations of imipenem were...

QUANTUM PHYSICS OF RETARDED TRANSPORT (1981)

Barker, J.

Many problems in hot electron physics, in particular the transport properties of sub micron devices, in volve space and time scales such that the semi-classical Boltzmann transport theory is invalid....

QUANTUM THEORY OF HOT ELECTRON-PHONON TRANSPORT IN INHOMOGENEOUS SEMICONDUCTORS (1981)

Barker, J., Lowe, D.

Functional derivative techniques are used to devise systems of coupled transport equations for the electron and phonon Wigner distributions evolving in the presence of inhomogeneous time-dependent...

THE SPIN SPECTROMETER AT THE HOLIFIELD HEAVY-ION RESEARCH FACILITY AND SOME PLANNED EXPERIMENTS (1980)

Sarantites, D., Jääskeläinen, M., Hood, J., Woodward, R., Barker, J., Hensley, D., ...

The 4π multidetector γ-ray spectrometer at the Holifield Heavy-ion Research Facility (HH IRF) is described in some detail. The following important features of this spectrometer are...

MICROCLUSTER IITHE GEOMETRIES OF SOFT-SPHERE PACKINGS (1977)

Barker, J.

Described here are the results of our attempts to design densely-packed, non-crystalline clusters of up to several hundred soft spheres. It is shown that units of dodecahedral symmetry can be built...

THE EFFECT OF PENTAZOCINE ON PUPILLARY SIZE AND INTRACRANIAL PRESSURE (1972)

BARKER, J., MILLER, J. D., JOHNSTON, I. H.

The effect of pentazocine 40 mg on pupillary size and reaction was investigated and compared with morphine 15 mg in 20 conscious patients. Pentazocine produced less pupilary constriction and the...

ERRATUM (1972)

BARKER, J., MILLER, J. D., JOHNSTON, I. H.

Sir,—In our paper “The effect of pentazocine on pupillary size and intracranial pressure” (Brit. J. Anaesth. (1972), 44, 197) there is an error on page 199, col. 1. This should read “pupil...

THE INFLUENCE OF NEUROLEPTANALGESIC DRUGS ON CEREBROSPINAL FLUID PRESSURE (1969)

FITCH, W., BARKER, J., JENNETT, W. B., MCDOWALL, D. G.

The effects of the neuroleptanalgesic drug combinations, droperidol 5 mg+phnoperidine 1.5 mg, and droperidol 5 mg+fentanyl 0.1 mg, on the cerebrospinal fluid (c.s.f.) pressure, have been...

THE EFFECT OF METHOXYFLURANE ON CEREBROSPINAL FLUID PRESSURE IN PATIENTS WITH AND WITHOUT INTRACRANIAL SPACE-OCCUPYING LESIONS (1969)

FITCH, W., BARKER, J., MCDOWALL, D. G., JENNETT, W. B.

The effect of methoxyflurane 0.5 per cent and 1.5 per cent on cerebrospinal fluid (c.s.f.) pressure has been studied in patients with normal c.s.f. pathways and in patients with in intracranial...

RESPIRATORY STIMULANT ACTION OF MORPHINE IN MAN (1968)

JENNETT, SHEILA, BARKER, J., FORREST, J. B.

An intravenous dose of 10 mg morphine sulphate per 70 kg was found to cause immediate respiratory stimulation in two of eight normal men. In one of the two, respiratory depression followed within 15...

Studies in the Respiratory and Carbohydrate Metabolism of Plant Tissues1 (1966)

BARKER, J., YOUNIS, M.E.

Oxygen at pressures of 2 and 3½ atmospheres caused an initial increase in CO2 output of strawberry leaves followed by a decrease. In oxygen at 2 atmospheres, but not in oxygen at 3½ atmospheres,...

Studies in the Respiratory and Carbohydrate Metabolism of Plant Tissues1: XVI. FURTHER STUDIES OF THE INFLUENCE OF IODOACETATE AS A STIMULANT OF RESPIRATION IN STRAWBERRY LEAVES (1965)

BARKER, J., YOUNIS, M. E.

Low concentrations of iodoacetate produced large increases in CO2 output of strawberry leaves which were not completely accounted for by the observed losses of sugars and starch. No significant...

Studies in the Respiratory and Carbohydrate Metabolism of Plant Tissues1: XVII. THE EFFECT OF IODOACETATE ON THE CO2 OUTPUT, PATHWAYS OF GLUCOSE RESPIRATION AND CONTENTS OF PHOSPHATE ESTERS IN STRAWBERRY LEAVES (1965)

BARKER, J., YOUNIS, M. E.

When specifically labelled glucose was fed to strawberry leaves, the C6/C1, quotient (rate of release of 14CO2 from glucose-6-14C/rate of release of 14CO2 from glucose-114C ranged from 0.27...

Studies in the Respiratory and Carbohydrate Metabolism of Plant Tissues2 (1964)

BARKER, J., MAPSON, L. W.

Feeding strawberry and poplar leaves with iodoacetate, arsenite, or fluoride decreased the contents of sucrose and ascorbate. The content of hexose increased in high concentrations of iodoacetate...

Studies in the Respiratory and Carbohydrate Metabolism of Plant Tissues2 (1964)

BARKER, J., JAKES, R., SOLOMOS, T., YOUNIS, M. E., ISHERWOOD, F. A.

Using the enzymatic technique (Slater, 1953; Bergmeyer, 1963) the contents of glucose-6-phosphate, fructose-6-phosphate, glucose-1-phosphate, fructose-1, 6-diphosphate, dihydroxyacetonephosphate, 2-...

High Pressures of Oxygen and Respiration; an Improved Technique and a Demonstration that High Pressures as such may affect the Rate of CO2 Output from plant Tissues1 (1960)

BARKER, J.

A technique is described which allows the metabolic rate of CO2 output to be determined during the first 24 hours of treatment with oxygen at high pressures. With potatoes, and to a lesser extent...

A Note on the Determination of Alcohol in Potato Tubers (1951)

BARKER, J.

Certain samples of potato tubers have been found to contain an interfering substance which is estimated as alcohol by the micro-method of Friedemann and Klass (1936) as modified by Saifi(1940). This...

Acoustic Confidence Measures For Segmenting Broadcast News

Barker Williams, J. Barker, G. Williams, S. Renals

In this paper we define an acoustic confidence measure based on the estimates of local posterior probabilities produced by a HMM/ANN large vocabulary continuous speech recognition system. We use this...