4,359 research outputs found
Japanese manufacturing: strategy and practice
A striking characteristic of Japanese factories is the extent of process control: from both the technical and the social viewpoint the labour and production system is controlled down to the very last detail. The characteristics of management and organization which underlie this are closely interwoven with Japanese culture. This explains why the work content, working conditions and working relationships in the factories look so different from those in western cultures. The paper shows why factories in the West cannot and should not copy Japanese factories
Parametric analysis of microwave and laser systems for communication and tracking. Volume 2 - System selection
System selection criteria of microwave and laser systems for communication and tracking - Vol.
Study and development of a mathematical analysis for the performance assessment of space communication system parameters
Electronic computer program user manual for optimum design of space communication syste
COPTRAN - A method of optimum communication systems design
Single set of mathematical expressions describes system cost and probability of error of data transmission in terms of four basic parameters in the link equation. A Lagrange multiplier sets up equations whose solutions yield the optimum values for system design considerations and weight and cost values
User's manual for COPTRAN, a method of optimum communication system design
User manual for COPTRAN /communication system optimization program translator
Central mode and soft mode behavior in PbMg1/Nb2/3O3 relaxor ferroelectric
The relaxor ferroelectric PbMg1/Nb2/3O3 was investigated by means of
broad-band dielectric and Fourier Transform Infrared (FTIR) transmission
spectroscopy in the frequency range from 1 MHz to 15 THz at temperatures
between 20 and 900 K using PMN films on infrared transparent sapphire
substrates. While thin film relaxors display reduced dielectric permittivity at
low frequencies, their high frequency intrinsic or lattice response is shown to
be the same as single crystal/ceramic specemins. It was observed that in
contrast to the results of inelastic neutron scattering, the optic soft mode
was underdamped at all temperatures. On heating, the TO1 soft phonon followed
the Cochran law with an extrapolated critical temperature equal to the Burns
temperature of 670 K and softened down to 50 cm-1. Above 450 K the soft mode
frequency leveled off and slightly increased above the Burns temperature. A
central mode, describing the dynamics of polar nanoclusters appeared below the
Burns temperature at frequencies near the optic soft mode and dramatically
slowed down below 1 MHz on cooling below room temperature. It broadened on
cooling, giving rise to frequency independent losses in microwave and lower
frequency range below the freezing temperature of 200 K. In addition, a new
heavily damped mode appeared in the FTIR spectra below the soft mode frequency
at room temperature and below. The origin of this mode as well as the
discrepancy between the soft mode damping in neutron and infrared spectra is
discussed.Comment: 7 pages with 7 figures, submitted to Phys. Rev.
The Kyoto Article 3.3 and 3.4 toolbox (KAT); January 2000
The KAT model provides a spreadsheet-based framework to calculate carbon sequestration in the commitment period (2008-2012) under Article 3.3 and 3.4 activities of the Kyoto protocol for the EU15 countries and selected Annex 1 countries. Any combination of 3.3 scenarios, 3.4 activities and sub-rules on Articles 3.3 and 3.4 based on policy proposals can be chosen. The carbon sequestration is calculated and presented in graphs and tables both in absolute values and in percentages of the1990 emissions. The user can interactively choose between a literature database and a database that consists of data submitted by countries under the UNFCC regulations
Transport and thermoelectric properties of the LaAlO/SrTiO interface
The transport and thermoelectric properties of the interface between
SrTiO and a 26-monolayer thick LaAlO-layer grown at high
oxygen-pressure have been investigated at temperatures from 4.2 K to 100 K and
in magnetic fields up to 18 T. For 4.2 K, two different electron-like
charge carriers originating from two electron channels which contribute to
transport are observed. We probe the contributions of a degenerate and a
non-degenerate band to the thermoelectric power and develop a consistent model
to describe the temperature dependence of the thermoelectric tensor. Anomalies
in the data point to an additional magnetic field dependent scattering.Comment: 7 pages, 4 figure
- …