scholarly journals Clock Speed

2020 ◽  
Author(s):  
Keyword(s):  
Clock Speed

Special-purpose computing for dense stellar systems

2006 ◽  
Vol 2 (14) ◽  
pp. 424-425 ◽  
Author(s):  
Junichiro Makino
Keyword(s):  
Current Status ◽  
Stellar Systems ◽  
Double Precision ◽  
Next Generation ◽  
Single Chip ◽  
Clock Speed ◽  
Peak Speed

AbstractI'll describe the current status of the GRAPE-DR project. The GRAPE-DR is the next-generation hardware for N-body simulation. Unlike the previous GRAPE hardwares, it is programmable SIMD machine with a large number of simple processors integrated into a single chip. The GRAPE-DR chip consists of 512 simple processors and operates at the clock speed of 500 MHz, delivering the theoretical peak speed of 512/226 Gflops (single/double precision). As of August 2006, the first prototype board with the sample chip successfully passed the test we prepared. The full GRAPE-DR system will consist of 4096 chips, reaching the theoretical peak speed of 2 Pflops.

scholarly journals Integrated DVB-X2 Receiver Architecture with Common Acceleration Engine

2019 ◽  
Vol 9 (19) ◽  
pp. 3983
Author(s):  
Youn-Sung Lee ◽  
Joongjin Kook
Keyword(s):  
Entire System ◽  
Laboratory Setting ◽  
Channel Decoding ◽  
Operating Modes ◽  
Clock Speed ◽  
Receiver Architecture ◽  
Technical Issues ◽  
Integrated Architecture ◽  
Multi Mode ◽  
Test Scenarios

This paper proposes an integrated DVB-X2 receiver architecture to support multi-mode broadcasting standards such as DVB-T2, DVB-C2, and DVB-S2 in a single platform. The entire system consists of a tuner block, a H/W-based receiver engine, a frame processor, and an A/V decoder. Specifically, an integrated architecture to solve key design and technical issues such as reducing the complexity of the receiver, efficiently accessing the H/W-based receiver engine, and simplifying an OFDM demodulator is proposed. The H/W-based receiver engine for DVB-X2 demodulation and channel decoding functions is implemented in two FPGA devices. The frame processor is implemented with 256 MB memory and a DSP operating at a clock speed of 1.0 GHz. To verify functionalities of the proposed DVB-X2 receiver, various test scenarios were considered in the laboratory setting. In particular, the proposed system was tested under various operating modes, as specified in standards such as DVB-T2, DVB-C2, and DVB-S2, and demonstrated successful operations in all test scenarios.

Study and Optimization of T-Tree Index in Main Memory Database

2013 ◽  
Vol 427-429 ◽  
pp. 2531-2535 ◽  
Author(s):  
Feng Dong Sun ◽  
Quan Guo ◽  
Lan Wang
Keyword(s):  
High Performance ◽  
Main Memory ◽  
Memory Access ◽  
Index Structure ◽  
Index Structures ◽  
Clock Speed ◽  
Main Memory Database ◽  
Tree Index ◽  
Overall Performance

The bottleneck is not the disk I/O but CUP clock speed faster than the memory speed in main memory database .In order to achieve high performance in main memory database ,it is a good approach to design new index structures to improve the memory access speed .This chapter presents a T-tree index structure and its algorithms in main memory database firstly .Then presents two results on Optimization of T-tree index ,including T-tail tree and TTB-tree. Our results indicate that the T-Tree provides good overall performance in main memory.

scholarly journals A role for O-GlcNAcylation in setting circadian clock speed

2012 ◽  
Vol 26 (5) ◽  
pp. 490-502 ◽  
Author(s):  
E. Y. Kim ◽  
E. H. Jeong ◽  
S. Park ◽  
H.-J. Jeong ◽  
I. Edery ◽  
...  
Keyword(s):  
Circadian Clock ◽  
Clock Speed

A TIMING TRAP FOR SEGREGATING CATCHES OF INSECTS BY DISCRETE INTERVALS

1981 ◽  
Vol 113 (8) ◽  
pp. 765-768 ◽  
Author(s):  
Helmut Riedl ◽  
B. A. Croft
Keyword(s):  
Flight Activity ◽  
Weather Factors ◽  
Clock Speed ◽  
Olfactory Stimuli ◽  
Female Attraction ◽  
Metal Disk ◽  
Physical And Chemical

Timing traps are widely used to study the diurnal flight activity of insects, their response rhythms to physical and chemical (olfactory) stimuli, and the effect of weather factors on these behaviors. Goetz (1941) used an adhesive-coated horizontal metal disk driven by a mechanical clock to determine the periodicity of male-female attraction in two lepidopterous species on grapes. The area of the disk exposed at any time corresponded to a 1-h sector of the clock dial. The disk completed a full revolution every 12 h and therefore the trap had to be checked twice a day. Also, since the clock speed was not variable, the trapping interval could only be adjusted by decreasing or increasing the opening to the sticky disk.

scholarly journals Setting Clock Speed in Mammals: The CK1ɛ tau Mutation in Mice Accelerates Circadian Pacemakers by Selectively Destabilizing PERIOD Proteins

Neuron ◽  
2008 ◽  
Vol 58 (1) ◽  
pp. 78-88 ◽  
Author(s):  
Qing-Jun Meng ◽  
Larisa Logunova ◽  
Elizabeth S. Maywood ◽  
Monica Gallego ◽  
Jake Lebiecki ◽  
...  
Keyword(s):  
Clock Speed ◽  
Tau Mutation ◽  
Circadian Pacemakers

scholarly journals ’CLOCK SPEED’ THEORY OF STRATEGY MAKING ALONG THE LIFE CYCLE

2016 ◽  
Vol 13 (1) ◽  
pp. 101-110
Author(s):  
Tomas Koplyay ◽  
◽  
Hilda Hurta ◽  
Keyword(s):  
Life Cycle ◽  
Clock Speed ◽  
Strategy Making
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