Results 41 to 50 of about 664,250 (197)

Formation of compressed flat electron beams with high transverse-emittance ratios [PDF]

open access: yesPhysical Review Special Topics - Accelerators and Beams, 2014
17 ...
J. Zhu   +3 more
openaire   +3 more sources

Taylor Series Interpolation-Based Direct Digital Frequency Synthesizer with High Memory Compression Ratio

open access: yesSensors
A common challenge in direct digital frequency synthesizers (DDFSs) is obtaining high memory compression while maintaining good output signal purity.
Kalle I. Palomäki, Jari Nurmi
doaj   +1 more source

Optimizing a spark-ignition engine fuelled with methane using a two-zone combustion model

open access: yesEnergy Storage and Saving, 2022
Methane which can be produced from biogas has a great potential to be used as an alternative renewable fuel for spark-ignition engines. However, engines need to be optimized for methane use.
Amr Ibrahim
doaj   +1 more source

Data Compression in the Petascale Astronomy Era: a GERLUMPH case study

open access: yes, 2015
As the volume of data grows, astronomers are increasingly faced with choices on what data to keep -- and what to throw away. Recent work evaluating the JPEG2000 (ISO/IEC 15444) standards as a future data format standard in astronomy has shown promising ...
Fluke, Christopher J.   +2 more
core   +1 more source

Converging shocks in elastic-plastic solids [PDF]

open access: yes, 2011
We present an approximate description of the behavior of an elastic-plastic material processed by a cylindrically or spherically symmetric converging shock, following Whitham's shock dynamics theory.
Hill, D. J.   +2 more
core   +1 more source

Lossless Data Compression for Time-Series Sensor Data Based on Dynamic Bit Packing

open access: yesSensors, 2023
In this paper, we propose a bit depth compression (BDC) technique, which performs bit packing by dynamically determining the pack size based on the pattern of the bit depth level of the sensor data, thereby maximally reducing the space wastage that may ...
Sang-Ho Hwang   +3 more
doaj   +1 more source

Compressibilty characteristics of fibrous peat soil [PDF]

open access: yes, 2006
Peat has been identified as one of major groups of soils found in Malaysia. Peat deposit covers large area of West Johore especially Pontian, Batu Pahat, and Muar.
Yulindasari, Yulindasari
core  

Experimental investigation of the impact of optical injection on vital parameters of a gain-switched pulse source [PDF]

open access: yes, 2007
An analysis of optical injection on a gain-switched distributed feedback (DFB) laser and its impact on pulse parameters that influence the performance of the pulse source in high-speed optical communication systems is presented in this paper.
A. Clarke   +36 more
core   +3 more sources

A test pattern generation method with high compression ratio

open access: yesIEICE Electronics Express, 2011
This paper proposes a test pattern generation and compression method to reduce test volume for VLSI testing. Unlike traditional approaches, the proposed scheme predefines linear relationships between vectors or within a vector of a test sequence firstly. Then, it determines test patterns by fault simulation.
Feng Liang, Luwen Zhang, Shaochong Lei
openaire   +2 more sources

Irreversible Performance of a Quantum Harmonic Heat Engine

open access: yes, 2006
The unavoidable irreversible losses of power in a heat engine are found to be of quantum origin. Following thermodynamic tradition a model quantum heat engine operating by the Otto cycle is analyzed.
Bender C M   +12 more
core   +1 more source

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