Results 201 to 210 of about 793,401 (263)

Invaders taking over-Mollusc faunal change in volcanic barrier lakes of the Albertine Rift biodiversity hotspot. [PDF]

PLoS One
Ssenkuba F, Rwibutso M, Dusabe MC, Tumusiime J, Albrecht C.   +4 more
europepmc   +1 more source

Fecal Microbiome Alterations in Colorectal Cancer: A Systematic Review of Compositional Changes and Microbial Biomarkers. [PDF]

Microbiologyopen
Askari P, Dashtbin S, Navidifar T, Dadgar-Zankbar L, Asadi A, Ghamari M, Najafi P, Alamdary SZ, Afifirad R, Ghanavati R, Darbandi A.   +10 more
europepmc   +1 more source

Enhancement of hidden Markov model analyses for improved inference of archaic introgression in modern humans. [PDF]

Mol Biol Evol
Coll Macià M, Skov L, Bæk ZED, Hobolth A.   +3 more
europepmc   +1 more source

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Sampled-Data Systems

2014
For digital devices to interact with the physical world, an interface is needed that transforms the signals from analog to digital and vice versa. Ideal samplers and zero-order hold devices are incorporated to derive discrete-time models of continuous-time systems. State variable descriptions and transfer functions are used.
Antsaklis, P., Trentelman, H. L.
openaire   +3 more sources

Invariance of sampled-data and adaptive sampled-data systems

IFAC Proceedings Volumes, 1963
Summary In the report it is shown that the invariance conditions can be used successfully in usual continuous control systems and also in sampled- data control systems. This is especially important in adaptive impulse systems. In the first section of the report fundamentals of invariance theory of combined sampled-data systems are considered.
V.M. Kuntsevich, Yu. V. Krementulo
openaire   +1 more source

Sampling and sampled-data models

Proceedings of the 2010 American Control Conference, 2010
Physical systems typically evolve continuously whereas modern controllers and signal processing devices invariably operate in discrete time. Hence sampling arises as a cornerstone problem in essentially all aspects of modern systems science. This paper reviews various aspects of sampling of signals and systems.
Graham C. Goodwin, Juan I. Yuz, Juan C. Agüero, Mauricio Esteban Cea Garrido   +3 more
openaire   +1 more source

The analysis of contact sampling data

Oecologia, 1980
Use of the chi-square statistic for investigating interspecific association has been incorrectly applied to the contact sampling method because of an invalid probability argument. The usual method of calculating expected frequencies leads to a large overestimation and hence bias towards negative association.
Piet, de Jong, Lonnie W, Aarssen, Roy, Turkington   +2 more
openaire   +2 more sources

Techniques for Warehousing of Sample Data

22nd International Conference on Data Engineering (ICDE'06), 2006
We consider the problem of maintaining a warehouse of sampled data that "shadows" a full-scale data warehouse, in order to support quick approximate analytics and metadata discovery. The full-scale warehouse comprises many "data sets," where a data set is a bag of values; the data sets can vary enormously in size. The values constituting a data set can
Paul G. Brown, Peter J. Haas
openaire   +1 more source

Over-sampled data converters

2009 IEEE Custom Integrated Circuits Conference, 2009
The papers in this session highlight both emerging applications of over-sampling techniques and newer methods of their implementation in traditional analog-to-digital converters architectures. Performance enhancement techniques for both discrete- and continuous-time oversampled analog-to-digital converters are presented.
Pavan Kumar Hanumolu, Alessandro Piovaccari   +1 more
openaire   +1 more source