C. Okujeni : rechercher sur Z-Library

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1

Controls of element dispersion in aeolian sand and calcrete-dominated regolith associated with gold mineralization in the Kraaipan greenstone belt, South Africa

Okujeni, C.D., Ackon, P., Baugaard, W., Langa, N.

Journal:

Geochemistry Exploration Environment Analysis

Année:

2005

Langue:

english

Fichier:

PDF, 549 KB

english, 2005

2

Utilization of fly ash for treatment of coal mines wastewater: Solubility controls on major inorganic contaminants

W.M. Gitari, L.F. Petrik, O. Etchebers, D.L. Key, C. Okujeni

Journal:

Année:

2008

Langue:

english

Fichier:

PDF, 633 KB

english, 2008

3

Brightness gradient-corrected hyperspectral image mosaics for fractional vegetation cover mapping in northern California

Jänicke, Clemens, Okujeni, Akpona, Cooper, Sam, Clark, Matthew, Hostert, Patrick, van der Linden, Sebastian

Journal:

Remote Sensing Letters

Année:

2020

Langue:

english

Fichier:

PDF, 1.77 MB

english, 2020

4

National-scale mapping of building height using Sentinel-1 and Sentinel-2 time series

Frantz, David, Schug, Franz, Okujeni, Akpona, Navacchi, Claudio, Wagner, Wolfgang, van der Linden, Sebastian, Hostert, Patrick

Journal:

Remote Sensing of Environment

Année:

2021

Fichier:

PDF, 47 KB

2021

5

Passive neutralisation of acid mine drainage by fly ash and its derivatives: A column leaching study

W.M. Gitari, L.F. Petrik, O. Etchebers, D.L. Key, E. Iwuoha, C. Okujeni

Journal:

Année:

2008

Langue:

english

Fichier:

PDF, 885 KB

english, 2008

6

Geological and ore microscopic evidence on the epigenetic origin of the manganese occurrences in northern Nigeria

A. Mücke, C. Okujeni

Journal:

Journal of African Earth Sciences (1983)

Année:

1983

Langue:

english

Fichier:

PDF, 11.30 MB

english, 1983

7

Support vector regression and synthetically mixed training data for quantifying urban land cover

Okujeni, Akpona, van der Linden, Sebastian, Tits, Laurent, Somers, Ben, Hostert, Patrick

Journal:

Remote Sensing of Environment

Année:

2013

Langue:

english

Fichier:

PDF, 3.85 MB

english, 2013

8

Treatment of Acid Mine Drainage with Fly Ash: Removal of Major Contaminants and Trace Elements

Gitari, M. W., Petrik, L. F., Etchebers, O., Key, D. L., Iwuoha, E., Okujeni, C.

Journal:

Journal of Environmental Science and Health Part A

Année:

2006

Langue:

english

Fichier:

PDF, 422 KB

english, 2006

9

Extending the vegetation–impervious–soil model using simulated EnMAP data and machine learning

Okujeni, Akpona, van der Linden, Sebastian, Hostert, Patrick

Journal:

Remote Sensing of Environment

Année:

2015

Langue:

english

Fichier:

PDF, 7.27 MB

english, 2015

10

Self-Organized Criticality in Developing Neuronal Networks

Tetzlaff, Christian, Okujeni, Samora, Egert, Ulrich, Wörgötter, Florentin, Butz, Markus, Friston, Karl J.

Journal:

PLoS Computational Biology

Année:

2010

Langue:

english

Fichier:

PDF, 2.65 MB

english, 2010

11

Distribution patterns of contaminants in the Mogale Gold tailing dam: a case study from South Africa

Abegunde, O. A., Okujeni, C. D., Wu, C., Siad, A.

Journal:

Environmental Earth Sciences

Année:

2016

Langue:

english

Fichier:

PDF, 4.26 MB

english, 2016

12

Subpixel Mapping of Urban Areas Using EnMAP Data and Multioutput Support Vector Regression

Rosentreter, Johannes, Hagensieker, Ron, Okujeni, Akpona, Roscher, Ribana, Wagner, Paul D., Waske, Bjorn

Journal:

IEEE Journal of Selected Topics in Applied Earth Observations and Remote Sensing

Année:

2017

Langue:

english

Fichier:

PDF, 1.28 MB

english, 2017

13

A generalized regression-based unmixing model for mapping forest cover fractions throughout three decades of Landsat data

Senf, Cornelius, LaÅ¡toviÄka, Josef, Okujeni, Akpona, Heurich, Marco, van der Linden, Sebastian

Journal:

Remote Sensing of Environment

Année:

2020

Fichier:

PDF, 2.65 MB

2020

14

State-dependent modulation of stimulus-response relations in cortical networks in vitro

Oliver Weihberger, Ayal Lavi, Samora Okujeni, Uri Ashery, Ulrich Egert

Journal:

BMC Neuroscience

Année:

2011

Langue:

english

Fichier:

PDF, 141 KB

english, 2011

15

Network inhomogeneity supports burst initiation in vitro

Samora Okujeni, Nila Moenig, Steffen Kandler, Oliver Weihberger, Ulrich Egert

Journal:

BMC Neuroscience

Année:

2011

Langue:

english

Fichier:

PDF, 852 KB

english, 2011

16

Distribution pattern of REE and other elements in the host rocks of the Gubrunde uranium occurrence, NE Nigeria

T. A. Ige, C. D. Okujeni, S. B. Elegba

Journal:

Journal of Radioanalytical and Nuclear Chemistry

Année:

1994

Langue:

english

Fichier:

PDF, 428 KB

english, 1994

17

Geochemical and gamma spectrometric analysis of ores and hostrocks of the Kanawa uranium occurrence in NE Nigeria

C. D. Okujeni, I. I. Funtua

Journal:

Journal of Radioanalytical and Nuclear Chemistry

Année:

1994

Langue:

english

Fichier:

PDF, 434 KB

english, 1994

18

Instrumental neutron activation analysis of some rock samples from Akwana and Arufu areas, Middle Benue Trough, Nigeria

L. A. Dim, J. Adetunji, C. D. Okujeni

Journal:

Journal of Radioanalytical and Nuclear Chemistry

Année:

1993

Langue:

english

Fichier:

PDF, 236 KB

english, 1993

19

Instrumental neutron activation analysis of limestone and associated calcite samples from Abakaliki, lower Benue Trough, Nigeria

L. A. Dim, J. Adetunji, C. D. Okujeni, S. B. Elegba, S. A. Agaja

Journal:

Journal of Radioanalytical and Nuclear Chemistry

Année:

1991

Langue:

english

Fichier:

PDF, 430 KB

english, 1991

20

Self-organized criticality of developing artificial neuronal networks and dissociated cell cultures

Christian Tetzlaff, Samora Okujeni, Ulrich Egert, Florentin Wörgötter, Markus Butz

Journal:

BMC Neuroscience

Année:

2009

Langue:

english

Fichier:

PDF, 139 KB

english, 2009

21

Impaired structural plasticity increases connectivity in developing cortical networks

Samora Okujeni, Steffen Kandler, Oliver Weihberger, Ulrich Egert

Journal:

BMC Neuroscience

Année:

2009

Langue:

english

Fichier:

PDF, 169 KB

english, 2009

22

Modeling persistent temporal patterns in dissociated cortical cultures using reservoir computing

Tayfun Gürel, Samora Okujeni, Oliver Weihberger, Stefan Rotter, Ulrich Egert

Journal:

BMC Neuroscience

Année:

2010

Langue:

english

Fichier:

PDF, 290 KB

english, 2010

23

Axonal anisotropy and connectivity inhomogeneities in 2D networks

Sarah Jarvs,Samora Okujeni,Steffen Kandler,Stefan Rotter…

Journal:

BMC Neuroscience

Année:

2012

Langue:

english

Fichier:

PDF, 130 KB

english, 2012

24

Import Vector Machines for Quantitative Analysis of Hyperspectral Data

Suess, Stefan, van der Linden, Sebastian, Leitao, Pedro J., Okujeni, Akpona, Waske, Bjorn, Hostert, Patrick

Journal:

IEEE Geoscience and Remote Sensing Letters

Année:

2014

Langue:

english

Fichier:

PDF, 459 KB

english, 2014

25

Partitioning of major and trace inorganic contaminants in fly ash acid mine drainage derived solid residues

Gitari, W. M., Petrik, L. F., Key, D. L., Okujeni, C.

Journal:

International Journal of Environmental Science and Technology

Année:

2010

Langue:

english

Fichier:

PDF, 661 KB

english, 2010

26

Interaction of acid mine drainage with Ordinary Portland Cement blended solid residues generated from active treatment of acid mine drainage with coal fly ash

Gitari, Wilson M., Petrik, Leslie F., Key, David L., Okujeni, Charles

Journal:

Journal of Environmental Science and Health Part A

Année:

2011

Langue:

english

Fichier:

PDF, 1.39 MB

english, 2011

27

[IEEE 2015 7th International IEEE/EMBS Conference on Neural Engineering (NER) - Montpellier, France (2015.4.22-2015.4.24)] 2015 7th International IEEE/EMBS Conference on Neural Engineering (NER) - Accurate neuronal tracing of microelectrodes based on PEDOT-dye coatings

Heizmann, Stefanie, Kilias, Antje, Okujeni, Samora, Boehler, Christian, Ruther, Patrick, Egert, Ulrich, Asplund, Maria

Année:

2015

Langue:

english

Fichier:

PDF, 1.02 MB

english, 2015

28

Inorganic contaminants attenuation in acid mine drainage by fly ash and its derivatives: column experiments

Gitari, Wilson M., Petrik, L.F., Key, David L., Okujeni, Charles

Journal:

International Journal of Environment and Pollution

Année:

2013

Langue:

english

Fichier:

PDF, 640 KB

english, 2013

29

SPIE Proceedings [SPIE SPIE Remote Sensing - Edinburgh, United Kingdom (Monday 26 September 2016)] Remote Sensing Technologies and Applications in Urban Environments - Use of multispectral satellite imagery and hyperspectral endmember libraries for urban land cover mapping at the metropolitan scale

Erbertseder, Thilo, Esch, Thomas, Chrysoulakis, Nektarios, Priem, Frederik, Okujeni, Akpona, van der Linden, Sebastian, Canters, Frank

Année:

2016

Langue:

english

Fichier:

PDF, 1.71 MB

english, 2016

30

SPIE Proceedings [SPIE SPIE Remote Sensing - Edinburgh, United Kingdom (Monday 26 September 2016)] Remote Sensing Technologies and Applications in Urban Environments - Spectral unmixing of urban land cover using a generic library approach

Erbertseder, Thilo, Esch, Thomas, Chrysoulakis, Nektarios, Degerickx, Jeroen, Iordache, Marian-Daniel, Okujeni, Akpona, Hermy, Martin, van der Linden, Sebastian, Somers, Ben

Année:

2016

Langue:

english

Fichier:

PDF, 695 KB

english, 2016

31

Ensemble Learning From Synthetically Mixed Training Data for Quantifying Urban Land Cover With Support Vector Regression

Okujeni, Akpona, van der Linden, Sebastian, Suess, Stefan, Hostert, Patrick

Journal:

IEEE Journal of Selected Topics in Applied Earth Observations and Remote Sensing

Année:

2017

Langue:

english

Fichier:

PDF, 1.91 MB

english, 2017

32

Mesoscale Architecture Shapes Initiation and Richness of Spontaneous Network Activity

Okujeni, Samora, Kandler, Steffen, Egert, Ulrich

Journal:

Journal of Neuroscience

Année:

2017

Langue:

english

Fichier:

PDF, 7.12 MB

english, 2017

33

[IEEE 2017 Joint Urban Remote Sensing Event (JURSE) - Dubai, United Arab Emirates (2017.3.6-2017.3.8)] 2017 Joint Urban Remote Sensing Event (JURSE) - Optimizing mixed spectra generation for regression-based unmixing of land cover in urban areas

Priem, Frederik, Canters, Frank, Okujeni, Akpona, van der Linden, Sebastian

Année:

2017

Langue:

english

Fichier:

PDF, 990 KB

english, 2017

34

Influence of neighbourhood information on ‘Local Climate Zone’ mapping in heterogeneous cities

Verdonck, Marie-Leen, Okujeni, Akpona, van der Linden, Sebastian, Demuzere, Matthias, De Wulf, Robert, Van Coillie, Frieke

Journal:

International Journal of Applied Earth Observation and Geoinformation

Année:

2017

Langue:

english

Fichier:

PDF, 1.74 MB

english, 2017

35

[IEEE 2017 Joint Urban Remote Sensing Event (JURSE) - Dubai, United Arab Emirates (2017.3.6-2017.3.8)] 2017 Joint Urban Remote Sensing Event (JURSE) - Thermal evaluation of the local climate zone scheme in Belgium

Verdonck, M.L., Van Coillie, F., De Wulf, R., Okujeni, A., van der Linden, S., Demuzere, M, Hooyberghs, H.

Année:

2017

Langue:

english

Fichier:

PDF, 401 KB

english, 2017

36

Mapping patterns of urban development in Ouagadougou, Burkina Faso, using machine learning regression modeling with bi-seasonal Landsat time series

Schug, Franz, Okujeni, Akpona, Hauer, Janine, Hostert, Patrick, Nielsen, Jonas Ø., van der Linden, Sebastian

Journal:

Remote Sensing of Environment

Année:

2018

Langue:

english

Fichier:

PDF, 6.36 MB

english, 2018

37

[IEEE 2014 6th Workshop on Hyperspectral Image and Signal Processing: Evolution in Remote Sensing (WHISPERS) - Lausanne, Switzerland (2014.6.24-2014.6.27)] 2014 6th Workshop on Hyperspectral Image and Signal Processing: Evolution in Remote Sensing (WHISPERS) - On the use of collaborative sparse regression in hyperspectral unmixing chains

Iordache, Marian-Daniel, Okujeni, Akpona, van der Linden, Sebastian, Bioucas-Dias, Jose M., Plaza, Antonio, Somers, Ben

Année:

2014

Langue:

english

Fichier:

PDF, 578 KB

english, 2014

38

A Comparison of Advanced Regression Algorithms for Quantifying Urban Land Cover

Okujeni, Akpona, van der Linden, Sebastian, Jakimow, Benjamin, Rabe, Andreas, Verrelst, Jochem, Hostert, Patrick

Journal:

Année:

2014

Langue:

english

Fichier:

PDF, 2.36 MB

english, 2014

39

Using Class Probabilities to Map Gradual Transitions in Shrub Vegetation from Simulated EnMAP Data

Suess, Stefan, van der Linden, Sebastian, Okujeni, Akpona, Leitão, Pedro, Schwieder, Marcel, Hostert, Patrick

Journal:

Année:

2015

Langue:

english

Fichier:

PDF, 1.25 MB

english, 2015

40

The EnMAP-Box—A Toolbox and Application Programming Interface for EnMAP Data Processing

van der Linden, Sebastian, Rabe, Andreas, Held, Matthias, Jakimow, Benjamin, Leitão, Pedro, Okujeni, Akpona, Schwieder, Marcel, Suess, Stefan, Hostert, Patrick

Journal:

Année:

2015

Langue:

english

Fichier:

PDF, 14.96 MB

english, 2015

41

Monitoring Natural Ecosystem and Ecological Gradients: Perspectives with EnMAP

Leitão, Pedro, Schwieder, Marcel, Suess, Stefan, Okujeni, Akpona, Galvão, Lênio, Linden, Sebastian, Hostert, Patrick

Journal:

Année:

2015

Langue:

english

Fichier:

PDF, 5.39 MB

english, 2015

42

Imaging Spectroscopy of Urban Environments

van der Linden, S., Okujeni, A., Canters, F., Degerickx, J., Heiden, U., Hostert, P., Priem, F., Somers, B., Thiel, F.

Journal:

Surveys in Geophysics

Année:

2018

Langue:

english

Fichier:

PDF, 2.51 MB

english, 2018

43

Generalizing machine learning regression models using multi-site spectral libraries for mapping vegetation-impervious-soil fractions across multiple cities

Okujeni, Akpona, Canters, Frank, Cooper, Sam D., Degerickx, Jeroen, Heiden, Uta, Hostert, Patrick, Priem, Frederik, Roberts, Dar A., Somers, Ben, van der Linden, Sebastian

Journal:

Remote Sensing of Environment

Année:

2018

Langue:

english

Fichier:

PDF, 6.44 MB

english, 2018

44

Characterizing 32 years of shrub cover dynamics in southern Portugal using annual Landsat composites and machine learning regression modeling

Suess, Stefan, van der Linden, Sebastian, Okujeni, Akpona, Griffiths, Patrick, Leitão, Pedro J., Schwieder, Marcel, Hostert, Patrick

Journal:

Remote Sensing of Environment

Année:

2018

Langue:

english

Fichier:

PDF, 12.52 MB

english, 2018

45

Comparing map-based and library-based training approaches for urban land-cover fraction mapping from Sentinel-2 imagery

Priem, Frederik, Okujeni, Akpona, van der Linden, Sebastian, Canters, Frank

Journal:

International Journal of Applied Earth Observation and Geoinformation

Année:

2019

Langue:

english

Fichier:

PDF, 3.52 MB

english, 2019

46

A Novel Spectral Library Pruning Technique for Spectral Unmixing of Urban Land Cover

Degerickx, Jeroen, Okujeni, Akpona, Iordache, Marian-Daniel, Hermy, Martin, van der Linden, Sebastian, Somers, Ben

Journal:

Année:

2017

Langue:

english

Fichier:

PDF, 8.48 MB

english, 2017

47

Inhomogeneities in Network Structure and Excitability Govern Initiation and Propagation of Spontaneous Burst Activity

Okujeni, Samora, Egert, Ulrich

Journal:

Frontiers in Neuroscience

Année:

2019

Langue:

english

Fichier:

PDF, 6.79 MB

english, 2019

48

Geochemical controls on the distribution of PGE mineralisation in skarns formed during emplacement of the Platreef in the Northern limb of the Bushveld Complex, South Africa

Mwenze, Tshipeng, Okujeni, Charles, Frei, Dirk, Siad, Abdi, Bailie, Russel

Journal:

Journal of Geochemical Exploration

Année:

2019

Langue:

english

Fichier:

PDF, 26.28 MB

english, 2019

49

Brightness gradient-corrected hyperspectral image mosaics for fractional vegetation cover mapping in northern California

Jänicke, Clemens, Okujeni, Akpona, Cooper, Sam, Clark, Matthew, Hostert, Patrick, van der Linden, Sebastian

Journal:

Remote Sensing Letters

Année:

2020

Fichier:

PDF, 1.77 MB

2020

50

The use of factor analysis and acid base accounting to probe the speciation of toxic metals in gold mine waste

Abegunde, O. A., Okujeni, C., Petrik, L., Siad, A. M., Madzivire, G., Wu, C.

Journal:

Environmental Earth Sciences

Année:

2020

Fichier:

PDF, 1.35 MB

2020