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1

Impact of different rhizobial strains and reduced nitrogen supply on growth, yield and nutrient uptake in cowpea grown hydroponically

Savvas, D., Ntatsi, G., Vlachou, M., Vrontani, C., Rizopoulou, E., Fotiadis, C., Ropokis, A., Tampakaki, A.

Journal:

Acta Horticulturae

Year:

2018

Language:

english

File:

PDF, 449 KB

english, 2018

2

A Comparative Performance Analysis of Interweave and Underlay Multi-Antenna Cognitive Radio Networks

Filippou, Miltiades C., Gesbert, David, Ropokis, George A.

Journal:

IEEE Transactions on Wireless Communications

Year:

2015

Language:

english

File:

PDF, 325 KB

english, 2015

3

[ICST 9th International Conference on Cognitive Radio Oriented Wireless Networks - Oulu, Finland (2014.06.02-2014.06.04)] Proceedings of the 9th International Conference on Cognitive Radio Oriented Wireless Networks - Underlay versus Interweaved Cognitive Radio Networks: a Performance Comparison Study

FILIPPOU, MILTIADES, GESBERT, DAVID, ROPOKIS, GEORGE

Year:

2014

Language:

english

File:

PDF, 291 KB

english, 2014

4

Effects of three commercial rootstocks on mineral nutrition, fruit yield, and quality of salinized tomato

Savvas, Dimitrios, Savva, Andreas, Ntatsi, Georgia, Ropokis, Andreas, Karapanos, Ioannis, Krumbein, Angelika, Olympios, Christos

Journal:

Journal of Plant Nutrition and Soil Science

Year:

2011

Language:

english

File:

PDF, 189 KB

english, 2011

5

Impact of Cultivar and Grafting on Nutrient and Water Uptake by Sweet Pepper (Capsicum annuum L.) Grown Hydroponically Under Mediterranean Climatic Conditions

Ropokis, Andreas, Ntatsi, Georgia, Kittas, Constantinos, Katsoulas, Nikolaos, Savvas, Dimitrios

Journal:

Frontiers in Plant Science

Year:

2018

Language:

english

File:

PDF, 2.48 MB

english, 2018

6

Can grafting onto suitable rootstocks contribute to less discharge of drainage water in semi-closed soilless cultivations of tomato?

Savvas, D., Tsopelopoulos, K., Vourdas, C., Chatzigiakoumis, E., Ropokis, A., Ntatsi, G.

Journal:

Acta Horticulturae

Year:

2020

File:

PDF, 296 KB

2020

7

Quadratic forms in normal RVs: theory and applications to OSTBC over hoyt fading channels

Ropokis, George, Rontogiannis, Athanasios, Mathiopoulos, P.

Journal:

IEEE Transactions on Wireless Communications

Year:

2008

Language:

english

File:

PDF, 386 KB

english, 2008

8

An Exact Performance Analysis of MRC / OSTBC over Generalized Fading Channels

Ropokis, G.A., Rontogiannis, A.A., Mathiopoulos, P.T., Berberidis, K.

Journal:

IEEE Transactions on Communications

Year:

2010

Language:

english

File:

PDF, 265 KB

english, 2010

9

BER Performance Analysis of Cooperative DaF Relay Networks and a New Optimal DaF Strategy

G. A. Ropokis, A. A. Rontogiannis, K. Berberidis

Journal:

IEEE Transactions on Wireless Communications

Year:

2011

Language:

english

File:

PDF, 297 KB

english, 2011

10

[IEEE 2009 International Workshop on Satellite and Space Communications (IWSSC) - Siena, Italy (2009.09.9-2009.09.11)] 2009 International Workshop on Satellite and Space Communications - Performance analysis of maximal ratio combining over shadowed-Rice fading channels

Ropokis, George A., Rontogiannis, Athanasios A., Berberidis, Kostas, Mathiopoulos, P. Takis

Year:

2009

Language:

english

File:

PDF, 127 KB

english, 2009

11

[IEEE 2014 6th International Symposium on Communications, Control and Signal Processing (ISCCSP) - Athens, Greece (2014.5.21-2014.5.23)] 2014 6th International Symposium on Communications, Control and Signal Processing (ISCCSP) - Optimal power control in cognitive MIMO systems with limited feedback

Ropokis, George A., Gesbert, David, Berberidis, Kostas

Year:

2014

Language:

english

File:

PDF, 136 KB

english, 2014

12

Universal Probability Distribution Function for Bursty Transport in Plasma Turbulence

Sandberg, I., Benkadda, S., Garbet, X., Ropokis, G., Hizanidis, K., del-Castillo-Negrete, D.

Journal:

Physical Review Letters

Year:

2009

Language:

english

File:

PDF, 296 KB

english, 2009

13

[IEEE 2013 IEEE 24th Annual International Symposium on Personal, Indoor, and Mobile Radio Communications (PIMRC) - London, United Kingdom (2013.09.8-2013.09.11)] 2013 IEEE 24th Annual International Symposium on Personal, Indoor, and Mobile Radio Communications (PIMRC) - Rate optimal power policies in underlay cognitive radios with limited channel feedback

Ropokis, George A., Gesbert, David, Berberidis, Kostas

Year:

2013

File:

PDF, 232 KB

2013

14

[IEEE 2006 International Workshop on Satellite and Space Communications - Madrid (2006.9.14-2006.9.14)] 2006 International Workshop on Satellite and Space Communications - Information Outage Probability of Orthogonal Space-Time Block Codes over Hoyt Distributed Fading Channels

Ropokis, George, Rontogiannis, Athanasios, Mathiopoulos, P.

Year:

2006

Language:

english

File:

PDF, 4.95 MB

english, 2006

15

[IEEE 2013 IEEE 24th Annual International Symposium on Personal, Indoor, and Mobile Radio Communications (PIMRC) - London, United Kingdom (2013.09.8-2013.09.11)] 2013 IEEE 24th Annual International Symposium on Personal, Indoor, and Mobile Radio Communications (PIMRC) - A team decisional beamforming approach for underlay cognitive radio networks

Filippou, Miltiades C., Ropokis, George A., Gesbert, David

Year:

2013

Language:

english

File:

PDF, 155 KB

english, 2013

16

[IEEE IEEE GLOBECOM 2007-2007 IEEE Global Telecommunications Conference - Washington, DC, USA (2007.11.26-2007.11.30)] IEEE GLOBECOM 2007-2007 IEEE Global Telecommunications Conference - Performance Analysis of Orthogonal Space Time Block Coding over Hoyt Fading Channels

Ropokis, George A., Rontogiannis, Athanasios A., Mathiopoulos, P. Takis

Year:

2007

Language:

english

File:

PDF, 150 KB

english, 2007

17

[IEEE 2013 IEEE 77th Vehicular Technology Conference (VTC Spring) - Dresden, Germany (2013.06.2-2013.06.5)] 2013 IEEE 77th Vehicular Technology Conference (VTC Spring) - Optimal Combining of Instantaneous and Statistical CSI in the SIMO Interference Channel

Filippou, Miltiades C., Gesbert, David, Ropokis, George A.

Year:

2013

Language:

english

File:

PDF, 174 KB

english, 2013

18

[IEEE 2015 ICC - 2015 IEEE International Conference on Communications Workshops (ICC) - London, United Kingdom (2015.6.8-2015.6.12)] 2015 IEEE International Conference on Communication Workshop (ICCW) - Performance analysis and optimization of hybrid MIMO Cognitive Radio systems

Filippou, Miltiades C., Ropokis, George A., Gesbert, David, Ratnarajah, Tharmalingam

Year:

2015

Language:

english

File:

PDF, 236 KB

english, 2015

19

Coordinated Shared Spectrum Precoding with Distributed CSIT

Filippou, Miltiades C., de Kerret, Paul, Gesbert, David, Ratnarajah, Tharmalingam, Pastore, Adriano, Ropokis, George A.

Journal:

IEEE Transactions on Wireless Communications

Year:

2016

Language:

english

File:

PDF, 290 KB

english, 2016

20

Joint Sensing and Reception Design of SIMO Hybrid Cognitive Radio Systems

Filippou, Miltiades, Ropokis, George A., Gesbert, David, Ratnarajah, Tharmalingam

Journal:

IEEE Transactions on Wireless Communications

Year:

2016

Language:

english

File:

PDF, 330 KB

english, 2016

21

[IEEE 2016 IEEE Wireless Communications and Networking Conference (WCNC) - Doha, Qatar (2016.4.3-2016.4.6)] 2016 IEEE Wireless Communications and Networking Conference - Energy efficient power allocation for carrier aggregation enabled communications systems

Ropokis, George A., Foukalas, Fotis

Year:

2016

Language:

english

File:

PDF, 336 KB

english, 2016

22

Current situation of greenhouse vegetable production in Greece

Savvas, D., Ropokis, A., Ntatsi, G., Kittas, C.

Journal:

Acta Horticulturae

Year:

2016

Language:

english

File:

PDF, 798 KB

english, 2016

23

Impact of grafting and rootstock on nutrient-to-water uptake ratios during the first month after planting of hydroponically grown tomato

Savvas, Dimitrios, Öztekin, Golgen Bahar, Tepecik, Mahmut, Ropokis, Andreas, Tüzel, Yuksel, Ntatsi, Georgia, Schwarz, Dietmar

Journal:

The Journal of Horticultural Science and Biotechnology

Year:

2017

Language:

english

File:

PDF, 1.22 MB

english, 2017

24

[IEEE 2016 IEEE 17th International Workshop on Signal Processing Advances in Wireless Communications (SPAWC) - Edinburgh, United Kingdom (2016.7.3-2016.7.6)] 2016 IEEE 17th International Workshop on Signal Processing Advances in Wireless Communications (SPAWC) - Optimal sensing and power allocation in pilot-aided shared access systems: A BER minimization approach

Ropokis, George A., Filippou, Miltiades C., Rontogiannis, Athanasios A., DaSilva, Luiz A., Marchetti, Nicola, Frascolla, Valerio, Mathiopoulos, P. Takis

Year:

2016

Language:

english

File:

PDF, 757 KB

english, 2016

25

[IEEE 2017 IEEE Wireless Communications and Networking Conference Workshops (WCNCW) - San Francisco, CA, USA (2017.3.19-2017.3.22)] 2017 IEEE Wireless Communications and Networking Conference Workshops (WCNCW) - Optimal Power Allocation for Energy Recycling Assisted Cooperative Communications

Ropokis, George A., Butt, M. Majid, Marchetti, Nicola, DaSilva, Luiz A.

Year:

2017

Language:

english

File:

PDF, 195 KB

english, 2017

26

IMPACT OF GRAFTING AND ROOTSTOCK ON THE RESPONSES OF CUCUMBER TO HEAVY METAL STRESS

Savvas, D., Ntatsi, G., Moiras, N., Tsakalidis, A., Ropokis, A., Liopa-Tsakalidi, A.

Journal:

Acta Horticulturae

Year:

2012

Language:

english

File:

PDF, 361 KB

english, 2012

27

Cognitive Beamforming in Radar Bands

Paisana, Francisco, Ropokis, George A., Marchetti, Nicola, DaSilva, Luiz A.

Journal:

IEEE Transactions on Communications

Year:

2018

Language:

english

File:

PDF, 3.11 MB

english, 2018

28

Nutrient uptake concentrations of a pepper crop under Mediterranean climate conditions

Ropokis, A., Savvas, D., Giagtzoglou, P., Ginosatis, S., Ntatsi, G., Kittas, C., Katsoulas, N.

Journal:

Acta Horticulturae

Year:

2017

Language:

english

File:

PDF, 579 KB

english, 2017

29

[IEEE 2018 25th International Conference on Telecommunications (ICT) - Saint Malo, France (2018.6.26-2018.6.28)] 2018 25th International Conference on Telecommunications (ICT) - Cooperative Beamforming Exploiting Energy Recycling

Ropokis, George A., Marchetti, Nicola, DaSilva, Luiz A.

Year:

2018

Language:

english

File:

PDF, 706 KB

english, 2018

30

[IEEE 2019 International Conference on Wireless and Mobile Computing, Networking and Communications (WiMob) - Barcelona, Spain (2019.10.21-2019.10.23)] 2019 International Conference on Wireless and Mobile Computing, Networking and Communications (WiMob) - Multi-relay cooperation with self-energy recycling and power consumption considerations

Ropokis, George A.

Year:

2019

File:

PDF, 390 KB

2019

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