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Institution

Helsinki University of Technology

About: Helsinki University of Technology is a based out in . It is known for research contribution in the topics: Thin film & Vortex. The organization has 8962 authors who have published 20136 publications receiving 723787 citations. The organization is also known as: TKK & Teknillinen korkeakoulu.


Papers
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01 Jan 2000
TL;DR: It is suggested that NIST, in standardizing AES modes of operation, should include CTR-mode encryption as one possibility for the next reasons, because it has significant efficiency advantages over the standard encryption modes without weakening the security.
Abstract: Counter-mode encryption (“CTR mode”) was introduced by Diffie and Hellman already in 1979 [5] and is already standardized by, for example, [1, Section 6.4]. It is indeed one of the best known modes that are not standardized in [10]. We suggest that NIST, in standardizing AES modes of operation, should include CTR-mode encryption as one possibility for the next reasons. First, CTR mode has significant efficiency advantages over the standard encryption modes without weakening the security. In particular its tight security has been proven. Second, most of the perceived disadvantages of CTR mode are not valid criticisms, but rather caused by the lack of knowledge.

157 citations

Journal ArticleDOI
TL;DR: In this article, three pyridylimine based complexes of NiII and CoII were tested as catalysts in ethylene polymerization and two nickel catalysts produced mainly methyl branched polymers with good to moderate activity, while the cobalt compound showed only marginal activity.
Abstract: Three pyridylimine based complexes of NiII and CoII were reacted with methylaluminoxane (MAO) and tested as catalysts in ethylene polymerization. The two nickel catalysts produced mainly methyl branched polymers with good to moderate activity, while the cobalt compound showed only marginal activity. Reaction conditions strongly affect the polymer properties, such as molecular weight, melting temperature, degree of branching, and chain end unsaturation type.

157 citations

Journal ArticleDOI
TL;DR: The contra- vs. ipsilateral MEF amplitude ratio C/I decreased from 4.0 during index finger movements to 0.6 during rapid finger flexions, reflecting the enhanced activation of the ipsilaterally primary somatomotor cortex with increasing complexity of movement.

157 citations

Journal ArticleDOI
TL;DR: In this article, an electrochemical model for a microbial fuel cell process was proposed, which was set up on the basis of the experimental results and analysis of biochemical and electrochemical processes.
Abstract: An electrochemical model for a microbial fuel cell process is proposed here. The model was set up on the basis of the experimental results and analysis of biochemical and electrochemical processes. Simulation of the process shows that the model describes the process reasonably well. The analysis of model simulation illustrates how the current output depends on the substrate concentration, mediator concentration and other main variables. The relationship between the current output and over-voltage is revealed from the modelling study.

157 citations

Journal ArticleDOI
TL;DR: This paper considers three different concepts of multivariate sign and rank and their ability to carry information about the geometry of the underlying distribution (or data cloud) to find highly efficient, robust, computable and affine equivariant location and covariance matrix estimates.

157 citations


Authors

Showing all 8962 results

NameH-indexPapersCitations
Ashok Kumar1515654164086
Hannu Kurki-Suonio13843399607
Nicolas Gisin12582764298
Anne Lähteenmäki11648581977
Riitta Hari11149143873
Andreas Richter11076948262
Mika Sillanpää96101944260
Markku Leskelä9487636881
Ullrich Scherf9273536972
Mikko Ritala9158429934
Axel H. E. Müller8956430283
Karl Henrik Johansson88108933751
T. Poutanen8612033158
Elina Lindfors8642023846
Günter Breithardt8555433165
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Performance
Metrics
No. of papers from the Institution in previous years
YearPapers
2021154
2020153
2019155
201851
201714
201630