Sample records for HOCHFREQUENZ (very high frequency)
from WorldWideScience.org

Sample records 1 - 20 shown. Select sample records:



3

Use of the CO2-laser micropoint micromanipulator for the treatment of laryngomalacia.

Remacle, Marc; Bodart, Etienne; Lawson, Georges; Minet, Michèle; Mayné, Alain

Between September 1989 and June 1994, 21 children (17 boys, 4 girls) with moderate to severe symptoms due to laryngomalacia underwent endoscopic surgery using the CO2-laser micropoint manipulator (shot-by-shot, 0.1 s, super-pulse, 2-3 W power; 280 microns beam; 400 mm working distance). Mean age of ...

DRIVER (German)

8

Thermal Effects in High Performance Frequency Synthesizers

Barillet, R.; IEEE; Ultrasonics, Ferroelectrics, and Frequency Control Society
1997-01-01

German National Library of Science and Technology (GetInfo) (German)

9

The limiting extremal behaviour of speculative returns : an analysis of intra-daily data from the Frankfurt Stock Exchange

Lux, Thomas

This paper provides a statistical analysis of high-frequency recordings of the German share price index DAX. The data set extends from November 1988 to the end of the year 1995 and includes all minute-to-minute changes during trading hours at the Frankfurt Stock Exchange. The focus of this study is ...

DRIVER (German)

12

Tail Wags Dog? Time-Varying Information Shares in the Bund Market

Upper, Christian; Werner, Thomas

The flow of information between futures and spot prices may vary over time, in particular during periods of stress. This article analyses the information content of the Bund Future and German government bonds during 1998 and test whether it is constant over time. The use of high-frequency data permi...

DRIVER (German)

15

Staggering and Synchronisation of Prices in a Low Inflation Environment: Evidence from German Food Stores

Loy, Jens-Peter; Weiss, Christoph R.

Only a few studies have analysed staggering and synchronisation in pricing behaviour of multi-product firms. These studies used low-frequency data in an environment of high rates of inflation. This paper investigates staggering and synchronisation of weekly prices for ten food products in 131 grocer...

DRIVER (German)

17

Real-time price discovery in Stock, bond and foreign exchange markets

Andersen, Torben G.; Bollerslev, Tim; Diebold, Francis X.; Vega, Clara

We characterize the response of U.S., German and British stock, bond and foreign exchange markets to real-time U.S. macroeconomic news. Our analysis is based on a unique data set of high-frequency futures returns for each of the markets. We find that news surprises produce conditional mean jumps; he...

DRIVER (German)

28

On the De-embedding of Small Value Millimeter-wave CMOS Inductor Measurements

Kraemer, Michael; Dragomirescu, Daniela; Rumeau, Alexandre; Plana, Robert

In radio frequency integrated circuits using a low resistivity silicon substrate, spiral inductors show advantages in performance and size with respect to transmission lines, even at frequencies as high as 60 GHz. In order to verify simulation results and build accurate models, test inductors need t...

DRIVER (German)

34

Molekulare Analyse von Tumorsuppressorgen-Kandidaten auf Chromosom 10 in Tumoren des Nervensystems

Köhler, Benjamin

Deletionen des Chromosoms 10 stellen eine häufige Veränderung in unterschiedlichen Tumoren des Nervensystems dar. Sie finden sich u.a. in der Mehrzahl der Glioblastome, aber auch in Subgruppen von atypischen und anaplastischen Meningeomen sowie Medulloblastomen. Der häufige Verlust von genetischem M...

DRIVER (German)

41

Long memory and fractional integration in high frequency financial time series

Caporale, Guglielmo Maria; Gil-Alana, Luis A.

This paper analyses the long-memory properties of high frequency financial time series. It focuses on temporal aggregation and the influence that this might have on the degree of dependence of the series. Fractional integration or I(d) models are estimated with a variety of specifications for the er...

DRIVER (German)

53

High-Frequency Oscillators Using Phase-Locked Arrays of Josephson Junctions

Benz, S. P.; Booi, P. A. A.; Institute of Electrical and Electronics Engineers; Ultrasonics, Ferroelectrics, and Frequency Control Society
1994-01-01

German National Library of Science and Technology (GetInfo) (German)

73

High Accuracy Time and Frequency From Space

Vessot, R. F. C.; Mattison, E.; IEEE; Ultrasonics, Ferroelectrics, and Frequency Control Society
1998-01-01

German National Library of Science and Technology (GetInfo) (German)

77

Frequency Control of Hydrogen Masers Using High Accuracy Calibrations

Boulanger, J.-S.; Douglas, R. J.; Institute of Electrical and Electronics Engineers; Ultrasonics, Ferroelectrics, and Frequency Control Society
1994-01-01

German National Library of Science and Technology (GetInfo) (German)

82

Ensemble perturbation smoother for optimizing tidal boundary conditions by assimilation of High-Frequency radar surface currents - application to the German Bight

Barth, Alexander; Alvera, Aida; Gurgel, Klaus-Werner; Staneva, Joanna; Port, Alex; Beckers, Jean-Marie; Stanev, Emil V

High-Frequency (HF) radars measure the ocean surface currents at various spatial and temporal scales. These include tidal currents, wind-driven circulation, density-driven circulation and Stokes drift. Sequential assimilation methods updating the model state have been proven successful to correct th...

DRIVER (German)

94

Cycle-To-Cycle Variations in S.I. Engines--The Effects of Fluid Flow and Gas Composition in the Vicinity of the Spark Plug on Early Combustion

Johansson, Bengt

Simultaneous measurements of early flame speed and local measurements of the major parameters controlling the process are presented. The early flame growth rate was captured with heat release analysis of the cylinder pressure. The local concentration of fuel or residual gas were measured with laser ...

DRIVER (German)

95

Correcting surface winds by assimilating High-Frequency Radar surface currents in the German Bight

Barth, Alexander; Alvera, Aida; Beckers, Jean-Marie; Staneva, Joanna; Emil V., Stanev; Johannes, Schulz-Stellenfleth

Surface winds are crucial for accurately modeling the surface circulation in the coastal ocean. In the present work, high-frequency (HF) radar surface currents are assimilated using an ensemble scheme which aims to obtain improved surface winds taking into account ECMWF (European Centre for Medium-R...

DRIVER (German)

96

Computer Analysis of the Characteristics of High-Frequency Quartz Resonators

Postnikov, I. I.; Institute of Electrical and Electronics Engineers; Ultrasonics, Ferroelectrics, and Frequency Control Society
1994-01-01

German National Library of Science and Technology (GetInfo) (German)

97

Computer Analysis of the Characteristics of High-Frequency Quartz Resonators

Postnikov, I. I.; IEEE; Ultrasonics, Ferroelectrics and Frequency Control Society
1994-01-01

German National Library of Science and Technology (GetInfo) (German)

99

Cloning, Nucleotide Sequencing, and Analysis of the AcrAB-TolC Efflux Pump of Enterobacter cloacae and Determination of Its Involvement in Antibiotic Resistance in a Clinical Isolate▿

Pérez, Sonia; Villanueva, Rosa; Bou, Germán; Beceiro, Alejandro; del Mar Tomás, María; Poza, Margarita; Pérez, Astrid

Enterobacter cloacae is an emerging clinical pathogen that may be responsible for nosocomial infections. Management of these infections is often difficult, owing to the high frequency of strains that are resistant to disinfectants and antimicrobial agents in the clinical setting. Multidrug efflux pu...

DRIVER (German)

101

Biases in the measurement of labour market dynamics

Bachmann, Ronald; Schaffner, Sandra

This paper analyses worker transitions on the German labour market derived from different data sources. These include the two German micro data sets which provide high-frequency observations on workers' employment and unemployment histories: the German Socioeconomic Panel (SOEP) and the IAB Employme...

DRIVER (German)

106

Alignment perception of high intonational plateaux in Italian and German

D'Imperio, Mariapaola; Gili Fivela, Barbara; Niebuhr, Oliver

This paper addresses the issue of tonal perception as it relates to special configurations, i.e. fundamental frequency (F0) plateaux. We here review a series of perceptual experiments in two different languages, Italian (Naples and Pisa variety) and German. A subset of the auditory stimuli employed ...

DRIVER (German)

107

Alcohol Use in Swedish Halls of Residence

Ståhlbrandt, Henrietta

In the year 2000, the alcohol habits of 1460 Swedish university students living in residence halls were assessed. The students had a mean age of 23.8 years, and 64% were male. The results from this baseline assessment show that the mean AUDIT score (± sd) was 10.3 ± 5.2 for males and 8.1 ± 4.7 for f...

DRIVER (German)

111

A New Design Philosphy for High Phase Stability Odd Order Frequency Multipliers

Siccardi, M.; DeMarchi, A.; IEEE; Ultrasonics, Ferroelectrics, and Frequency Control Society
1996-01-01

German National Library of Science and Technology (GetInfo) (German)

115

A High Resolution Phase and Frequency Offset Generator

Ascarrunz, F. G.; IEEE; Ultrasonics, Ferroelectrics, and Frequency Control Society
1998-01-01

German National Library of Science and Technology (GetInfo) (German)