A timing-driven synthesis of arithmetic circuits using carry-save-adders (short paper)

2000 ◽  
Author(s):  
Taewhan Kim ◽  
Junhyung Um
Keyword(s):  
Arithmetic Circuits ◽  
Short Paper ◽  
Carry Save Adders

AN ACCURATE EXPLORATION OF TIMING AND AREA TRADE-OFFS IN ARITHMETIC OPTIMIZATION USING CARRY-SAVE-ADDERS

2000 ◽  
Vol 10 (05n06) ◽  
pp. 279-292
Author(s):  
YOUNG-TAE KIM ◽  
TAEWHAN KIM
Keyword(s):  
Digital Filter ◽  
Optimization Techniques ◽  
Arithmetic Circuits ◽  
Inherent Limitation ◽  
Trade Offs ◽  
Circuit Timing ◽  
Area Increase ◽  
Boundary Optimization ◽  
Multiple Operation ◽  
Carry Save Adders

Carry-save adder (CSA) is one of the most widely used implementation units for arithmetic circuits. However, the existing approaches to the CSA transformation have an inherent limitation in the scope of CSA application, i.e., transforming each of operation trees separately without any interaction among them, which results in a locally optimized CSA circuit. To overcome the limitation, we introduce a new concept called tree-boundary optimization techniques, based on which we propose a practically efficient algorithm for exploring timing and area trade-offs in optimizing arithmetic circuits using CSAs. The proposed algorithm is applicable to any arithmetic circuits with multiple operation trees, which appear in most filter designs. From experimentations on a number of digital filter designs, we confirm that the proposed algorithm reduces the circuit timing by 4%–40% without any area increase compared to those produced by the conventional CSA transformations.

The promises and perfidy of cryomicroscopy and analysis

1994 ◽  
Vol 52 ◽  
pp. 382-383
Author(s):  
Patrick Echlin
Keyword(s):  
Low Temperature ◽  
High Energy ◽  
Short Paper ◽  
List Type ◽  
Time Resolved ◽  
Energy Beam ◽  
Cellular Analysis ◽  
Dissolved Ions ◽  
Embedding Medium ◽  
Low Temperature Microscopy

The unusual title of this short paper and its accompanying tutorial is deliberate, because the intent is to investigate the effectiveness of low temperature microscopy and analysis as one of the more significant elements of the less interventionist procedures we can use to prepare, examine and analyse hydrated and organic materials in high energy beam instruments. The promises offered by all these procedures are well rehearsed and the litany of petitions and responses may be enunciated in the following mantra.Vitrified water can form the perfect embedding medium for bio-organic samples.Frozen samples provide an important, but not exclusive, milieu for the in situ sub-cellular analysis of the dissolved ions and electrolytes whose activities are central to living processes.The rapid conversion of liquids to solids provides a means of arresting dynamic processes and permits resolution of the time resolved interactions between water and suspended and dissolved materials.The low temperature environment necessary for cryomicroscopy and analysis, diminish, but alas do not prevent, the deleterious side effects of ionizing radiation.Sample contamination is virtually eliminated.

Frontiers in Complex Dynamics

2014 ◽  
Author(s):  
Araceli Bonifant ◽  
Misha Lyubich ◽  
Scott Sutherland
Keyword(s):  
Historical Perspective ◽  
Complex Dynamics ◽  
Short Paper ◽  
Combinatorial Group Theory ◽  
Entropy Theory ◽  
Holomorphic Dynamics ◽  
Eightieth Birthday ◽  
Several Variables ◽  
Fields Medal ◽  
Combinatorial Group

John Milnor, best known for his work in differential topology, K-theory, and dynamical systems, is one of only three mathematicians to have won the Fields medal, the Abel prize, and the Wolf prize, and is the only one to have received all three of the Leroy P. Steele prizes. In honor of his eightieth birthday, this book gathers together surveys and papers inspired by Milnor's work, from distinguished experts examining not only holomorphic dynamics in one and several variables, but also differential geometry, entropy theory, and combinatorial group theory. The book contains the last paper written by William Thurston, as well as a short paper by John Milnor himself. Introductory sections put the papers in mathematical and historical perspective, color figures are included, and an index facilitates browsing.

Social Attitudes and Empathy in the Weather Enterprise

2018 ◽  
Author(s):  
Matthew J. Bolton
Keyword(s):  
Social Attitudes ◽  
Short Paper

A short paper on social attitudes in the American weather enterprise, accepted for publication in the July 2018 newsletter of the National Weather Association.

An Expert Ranked List of Pro-nature Conservation Behaviours for Public Use

2019 ◽  
Author(s):  
Lea Barbett ◽  
Edward Stupple ◽  
Michael Sweet ◽  
Miles Richardson
Keyword(s):  
Nature Conservation ◽  
General Population ◽  
Mass Extinction ◽  
Negative Impact ◽  
Ecological Impact ◽  
Human Action ◽  
Short Paper ◽  
The Public ◽  
The Uk ◽  
Ranked List

The planet is facing an anthropogenic mass extinction of wildlife, which will have a grave impact on the environment and humans. Widespread human action is needed to minimize the negative impact of humans on biodiversity and support the restoration of wildlife. In order to find effective ways to promote pro-nature conservation behaviours to the general population, there is a need to provide a list of behaviours which will have worthwhile ecological impact and are worth encouraging. In a novel collaboration between psychologists and ecologists, 70 experts from practical and academic conservation backgrounds were asked to review and rate 48 conservation related behaviours. According to their judgement, this short paper presents a ranked list of pro-nature conservation behaviours for the public in the UK and similar landscapes. This includes behaviours people can engage in in their homes, their gardens, on their land, and in their roles as citizens.

On Using Approximate Computing to Build an Error Detection Scheme for Arithmetic Circuits

2020 ◽  
Vol 36 (1) ◽  
pp. 33-46
Author(s):  
B. Deveautour ◽  
A. Virazel ◽  
P. Girard ◽  
V. Gherman
Keyword(s):  
Error Detection ◽  
Arithmetic Circuits ◽  
Approximate Computing ◽  
Detection Scheme
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