Performance and power analysis of globally asynchronous locally synchronous multiprocessor systems

2006 ◽  
Author(s):  
Zhiyi Yu ◽  
B.M. Baas
Keyword(s):  
Power Analysis ◽  
Multiprocessor Systems ◽  
Globally Asynchronous Locally Synchronous

scholarly journals A GALS Pipeline DES Architecture to Increase Robustness against CPA and CEMA Attacks

2011 ◽  
Vol 6 (1) ◽  
pp. 25-34
Author(s):  
Rafael I. Soares ◽  
Ney L. V. Calazans ◽  
Victor Lomné ◽  
Amine Dehbaoui ◽  
Philippe Maurine ◽  
...  
Keyword(s):  
Power Analysis ◽  
Low Cost ◽  
Data Encryption ◽  
Design Flow ◽  
Specific Power ◽  
Pipeline Architecture ◽  
Globally Asynchronous Locally Synchronous ◽  
Side Channels ◽  
Cryptographic Keys ◽  
Significant Area

Side channels attacks (SCAs) are very effective and low cost methods to extract secret information from supposedly secure cryptosystems.The traditional synchronous design flow used to create such systems favors the leakage of information, which enables attackers to draw correlations between data processes and circuit power consumption, electromagnetic radiation or other sources of leakage. By using well known analysis techniques, these correlations may allow that an attacker retrieves secret cryptographic keys. Differential Power Analysis (DPA) and Differential Electromagnetic Analysis (DEMA) are among the most cited attack types. More accurate types of attacks have been proposed, including Correlation Power Analysis (CPA) that associates power quantities with a specific power model. In recent years, several countermeasures against SCAs have been proposed. Fully asynchronous and globally asynchronous locally synchronous (GALS) design methods appear as alternatives to design tamper resistant cryptosystems. However, according to previous works they use to achieve this with significant area, throughput, latency and power penalties and are not absolutely secure. This paper proposes a new GALS pipeline architecture for the Data Encryption Standard (DES) that explores the trade-off between circuit area and robustness to SCAs. Robustness is enhanced by replicating the DES hardware structure in asynchronously communicating module instances, coupled with self-varying operating frequencies. Designs prototyped on FPGAs with the proposed technique presented promising robustness against attacks, after submitted to differential and correlation analyses. This is true for both power and electromagnetic channels. Additionally the proposed architecture displays throughput superior to previously reported results.

Evaluation von Gesundheitsförderungsprogrammen - Methodische Stolpersteine und pragmatische Empfehlungen

2000 ◽  
Vol 8 (1) ◽  
pp. 18-24 ◽  
Author(s):  
Gert Kaluza ◽  
Hans-Henning Schulze
Keyword(s):  
Effect Size ◽  
Power Analysis ◽  
Prävention Und Gesundheitsförderung ◽  
Size Display ◽  
Methodische Probleme

Zusammenfassung. Die Evaluation von Interventionen zur Prävention und Gesundheitsförderung stellt ein zentrales Aufgabenfeld der gesundheitspsychologischen Forschung dar. Häufige methodische Probleme entsprechender Evaluationsstudien betreffen 1. Ausgangswert-Unterschiede bei nicht randomisierten Studiendesigns, 2. Abhängigkeit von Beobachtungen bei Gruppeninterventionsstudien, 3. Kapitalisierung von Irrtumswahrscheinlichkeiten aufgrund einer Vielzahl von abhängigen Variablen und 4. Beurteilung der praktischen Relevanz statistisch signifikanter Interventionseffekte. Zu deren pragmatischer Lösung werden u.a. 1. die Anwendung kovarianzanalytischer Auswertungsstrategien, 2. die Berechnung von Intraclass-Korrelationen und ggf. eine Datenauswertung auf der Ebene der Gruppenmittelwerte, 3. eine Reduktion der Anzahl der abhängigen Variablen mittels Hauptkomponentenanalyse sowie eine Alpha-Adjustierung unter Berücksichtigung der Teststärke (“compromise power analysis”) und 4. die Umrechnung gängiger Effektstärken in prozentuale Erfolgsraten (“binomial effect size display”) empfohlen.

Power Analysis with a Lesbian Client

2006 ◽  
Author(s):  
Pam Remer ◽  
Danielle Oakley
Keyword(s):  
Power Analysis

Kinematic and Power Analysis of a Key Straw Walker of a Grain Harvester

2019 ◽  
pp. 92-104
Author(s):  
Dmitri Doubovik ◽  
◽  
Volha Baran ◽  
Siarhei Chapialevich ◽  
Aliaksandr Shantyka ◽  
...  
Keyword(s):  
Power Analysis

Campaign spaces for sustainable development: a power analysis of the Fairtrade Town Campaign in the UK

Food Chain ◽  
2020 ◽  
Vol 9 (1) ◽  
pp. 8-28
Author(s):  
Roberta Discetti ◽  
Matthew Anderson ◽  
Adam Gardner
Keyword(s):  
Sustainable Development ◽  
Power Analysis ◽  
The Uk

Effects of a single oral dose of phenobarbital on prolactin, growth hormone and luteinizing hormone in normal women

1983 ◽  
Vol 103 (3) ◽  
pp. 309-314 ◽  
Author(s):  
G. Rosadini ◽  
P. Masturzo ◽  
G. Rodriguez ◽  
G. Murialdo ◽  
V. Montano ◽  
...  
Keyword(s):  
Growth Hormone ◽  
Luteinizing Hormone ◽  
Oral Dose ◽  
Single Oral Dose ◽  
Power Analysis ◽  
Sleep Pattern ◽  
Absolute Power ◽  
Normal Women

Abstract. The effects of a single oral dose of phenobarbital (PB) on the 24 h secretion of prolactin, growth hormone and luteinizing hormone have been evaluated in normal women. An EEG record was taken and barbiturate levels assayed in serum. A statistically significant decrease of growth hormone 24 h mean levels was observed and growth hormone and prolactin values during sleep were diminished. No changes in luteinizing hormone concentrations were observed. After PB the EEG showed no important alterations in sleep pattern, but on the power analysis an increase above 16 Hz absolute power was detected during the waking period.

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