User profiles for Y. Ogata

Yosihiko Ogata

The Institute of Statistical Mathematics
Verified email at ism.ac.jp
Cited by 17795

Transport and release of chemicals from plastics to the environment and to wildlife

…, MP Zakaria, K Akkhavong, Y Ogata… - … transactions of the …, 2009 - royalsocietypublishing.org
Plastics debris in the marine environment, including resin pellets, fragments and microscopic
plastic fragments, contain organic contaminants, including polychlorinated biphenyls (PCBs…

Seismicity analysis through point-process modeling: A review

Y Ogata - Seismicity patterns, their statistical significance and …, 1999 - Springer
… Applying this model to shallow seismicity in the inner zone of southwest Japan, OGATA (1983b)
showed the existence and the shape of a seasonal component which is quite similar to …

Approaches for extracting practical information from gene co-expression networks in plant biology

K Aoki, Y Ogata, D Shibata - Plant and cell physiology, 2007 - academic.oup.com
Gene co-expression, in many cases, implies the presence of a functional linkage between
genes. Co-expression analysis has uncovered gene regulatory mechanisms in model …

The centenary of the Omori formula for a decay law of aftershock activity

T Utsu, Y Ogata - Journal of Physics of the Earth, 1995 - jstage.jst.go.jp
Ogata, Y., Estimation of the parameters in the modified Omori … Ogata, Y., Statistical models
for earthquake occurrences and … Ogata, Y., Statistical models for earthquake occurrences and …

Statistical models for earthquake occurrences and residual analysis for point processes

Y Ogata - Journal of the American Statistical association, 1988 - Taylor & Francis
This article discusses several classes of stochastic models for the origin times and magnitudes
of earthquakes. The models are compared for a Japanese data set for the years 1885–…

Space-time point-process models for earthquake occurrences

Y Ogata - Annals of the Institute of Statistical Mathematics, 1998 - Springer
Several space-time statistical models are constructed based on both classical empirical
studies of clustering and some more speculative hypotheses. Then we discuss the …

Determination of parameters of electron transport in dye-sensitized solar cells using electrochemical impedance spectroscopy

M Adachi, M Sakamoto, J Jiu, Y Ogata… - The Journal of Physical …, 2006 - ACS Publications
The same equation was derived from two different impedance models based on the quite
different physical descriptions proposed by Kern et al. and by Bisquert. Reliable values of the …

International Pellet Watch: Global monitoring of persistent organic pollutants (POPs) in coastal waters. 1. Initial phase data on PCBs, DDTs, and HCHs

Y Ogata, H Takada, K Mizukawa, H Hirai, S Iwasa… - Marine pollution …, 2009 - Elsevier
Samples of polyethylene pellets were collected at 30 beaches from 17 countries and analyzed
for organochlorine compounds. PCB concentrations in the pellets were highest on US …

On Lewis' simulation method for point processes

Y Ogata - IEEE transactions on information theory, 1981 - ieeexplore.ieee.org
… Thus we have a function Y**(S) which is always decreasing and Y(S) QV**(S) for s > 0, say
v**(s… Y. Ogata, “The asymptotic behavior of maximum likelihood estimators for stationary point …

Organic micropollutants in marine plastics debris from the open ocean and remote and urban beaches

H Hirai, H Takada, Y Ogata, R Yamashita… - Marine pollution …, 2011 - Elsevier
To understand the spatial variation in concentrations and compositions of organic
micropollutants in marine plastic debris and their sources, we analyzed plastic fragments (∼10mm) …