Items where Author is "Idachaba, F.E."

Article

Idachaba, F.E. and Rabiei, Minou (2021) Current technologies and the applications of data analytics for crude oil leak detection in surface pipelines. Journal of Pipeline Science and Engineering, 1. pp. 436-451.

Oshin, Oluwadamilola and Kireev, Dmitry and Hlukhova, Hanna and Idachaba, F.E. and Akinwande, Deji and Atayero, A. A. (2020) Graphene-Based Biosensor for Early Detection of Iron Deficiency. Sensors, 20.

Idowu-Bismark, Olabode and Oyeleke, Oluseun and Atayero, A. A. and Idachaba, F.E. (2019) 5G Small Cell Backhaul: A Solution Based on GSM-Aided Hybrid Beamforming. I. J. Computer Network and Information Security, 8. pp. 24-31.

Olabode, Idowu-Bismark and Okokpujie, Kennedy O. and Idachaba, F.E. and Atayero, A. A. (2018) A Primer on MIMO Detection Algorithms for 5G Communication Network. International Journal on Communications Antenna and Propagation (I.Re.C.A.P.), 8 (3). ISSN 2039 – 5086

Idachaba, F.E. (2018) LTE DOWNLINK AND UPLINK PHYSICAL LAYER. IAENG Transactions on Engineering Sciences. pp. 387-400.

Ndujiuba, Charles Uzoanya and Ibhaze, Augustus Ehiremen and John, S. N. and Idachaba, F.E. (2017) An Empirical Propagation Model for Path Loss Prediction at 2100MHz in a Dense Urban Environment. Indian Journal of Science and Technology, 10 (5). ISSN ISSN (Print) : 0974-6846, ISSN (Online) : 0974-5645

Idowu-Bismark, Olabode and Idachaba, F.E. and Atayero, A. A. (2017) Massive MIMO Channel Characterization and Modeling: The Present and the Future. International Journal of Applied Engineering Research, 12 (23). pp. 13742-13754. ISSN 0973-4562

Idowu-Bismark, Olabode and Idachaba, F.E. and Atayero, A. A. (2017) A Survey on Traffic Evacuation Techniques in Internet of Things Network Environment. Indian Journal of Science and Technology,, 10 (33). ISSN (Print) : 0974-6846 (Online) : 0974-5645

Idachaba, F.E. and Oni, O.O. (2016) GSM Transceiver Design Optimization. Asian Journal of Applied Sciences, 4 (4). pp. 955-962. ISSN Asian Journal of Applied Sciences

Idachaba, F.E. and Ibhaze, Augustus E. (2016) Development of a Real Time Road Accident Location and Emergency Alert System. International Journal of Applied Engineering Research, 11 (23). pp. 11110-11113. ISSN 0973-4562

Idachaba, F.E. and Ibhaze, Augustus E. (2016) GSM/GPS Assisted Road and Traffic Congestion Detection System. International Journal of Applied Engineering Research, 11 (24). pp. 11610-11613. ISSN 0973-4562

Idachaba, F.E. (2016) Monitoring of Oil and Gas Pipelines by Use of VTOL-Type Unmanned Aerial Vehicles. Oil and Gas Facilities. pp. 47-52.

Idachaba, F.E. and Orovwode, H. E. and Olowoleni, J. O. and Oni, O.O. (2014) Power Supply Options and Suitability Assessment for Remote Oil and Gas Production Installations. International Journal of Emerging Technology and Advanced Engineering, 4 (10). ISSN 2250-2459,

Orovwode, H. E. and Awosope, C. O. A. and Idachaba, F.E. and Adoghe, A. U. and Adelakun, A. (2014) Mitigating Climate Change Through Community-Based Microgrid. International Journal of Emerging Technology and Advanced Engineering, 4 (4). p. 1010. ISSN 2250-2459

Idachaba, F.E. and Ajaja, O. and Oke-Salako, T. and Ibioku, A. and Odejobi, M. and FabiyI, A. and Odigwe, I. A. (2014) Design and Development of Student Data Retrieval System via GSM. IOSR Journal of Electronics and Communication Engineering, 9 (1). pp. 64-69. ISSN 2278-2834,p- ISSN: 2278-8735

Idachaba, F.E. (2014) Remote Operations Implementation: A Tool for Improved HSE Management. PETROLEUM TRAINING JOURNAL An International Journal, 1. pp. 1-6. ISSN 1595-9104

Idachaba, F.E. (2014) Algorithm for source mobile identification and deactivation in SMS triggered improvised explosive devices. ScienceDirect. pp. 96-101.

Odigwe, I. A. and Nnadi, C. I. and Agbetuyi, Ayoade F. and Awelewa, A. A. and Idachaba, F.E. (2013) Development of a software solution for solar-PV power systems sizing and monitoring. INTERNATIONAL JOURNAL of RENEWABLE ENERGY RESEARCH, 3 (3).

Idachaba, F.E. (2013) Optimal Antenna Configurations for Digital Oilfield Implementations. Advanced Materials Research, 824. pp. 187-192.

Idachaba, F.E. and Orovwode, H. E. (2012) Analysis of a Weaver, Hartley and Saw- Filter Based, Image Reject Architectures for Radio Receiver Design. Advanced Materials Research, 367. pp. 199-204.

Idachaba, F.E. (2012) Current Trends and Technologies in the Oil and Gas Industry. International Journal of Emerging Technology and Advanced Engineering, 2 (7). ISSN 2250-2459

Idachaba, F.E. and Edeko, F. O. (2012) Design of a GSM phone booth for low cost rural communication. JOURNAL OF INFORMATION AND COMMUNICATION TECHNOLOGIES,, 2 (4).

Idachaba, F.E. and Ekedo, F. O. (2012) Low Power Transceiver Based Approach to Extending Mobile Communication to the Rural Areas of Nigeria. International Journal of Engineering and Technology, 2 (3). pp. 489-494. ISSN 2049-3444

Idachaba, F.E. and Ogunrinde, Ayobami (2012) Review of Remote Terminal Unit (RTU) and Gateways for Digital Oilfield delpoyments. IJACSA) International Journal of Advanced Computer Science and Applications,, 3 (8). pp. 157-160.

Idachaba, F.E. and Idachaba , Mercy E. (2012) Robust E-Health Communication Architecture for Rural Communities in Developing Countries. ETASR - Engineering, Technology & Applied Science Research, 2 (3). pp. 237-240.

Idachaba, F.E. and Edeko, F. O. (2012) Rural Mobile Telephony: A VSAT (Satellite) based Approach. Advanced Materials Research, 367. pp. 215-222.

Idachaba, F.E. (2011) Design of a GPS/GSM based Tracker for the Location of Stolen Items and Kidnapped or Missing Persons in Nigeria. ARPN Journal of Engineering and Applied Sciences, 6 (10). ISSN 1819-6608

Idachaba, F.E. (2011) Remote Operation of Oil and Gas production installations in the Niger Delta. Asian Transactions on Engineering, 1 (3). p. 55. ISSN 2221-4267

Idachaba, F.E. (2011) Intelligent Traffic Monitoring and Hybrid Energy System for BTS OPEX Reduction. NSE TECHNICAL TRANSACTIONS, 46 (2). pp. 42-48.

Idachaba, F.E. and Edeko, F. O. (2011) Analysis and Development of a Low Cost GSM Telephone System for a Rural Area. Global Jour. of Engg. & Tech., 4 (2). pp. 165-176.

Idachaba, F.E. (2010) Design of Intel 8751 Microcontroller-based System for Monitoring and Control of a Thermal Process. IETE JOURNAL OF RESEARCH, 56 (4). pp. 189-193.

Idachaba, F.E. (2010) Telecommunication Cost Reduction in Nigeria through Infrastructure Sharing between Operators. The Pacific Journal of Science and Technology, 11 (1). pp. 272-276.

Idachaba, F.E. (2009) Strategies for Low Cost Rural Telephony. The Pacific Journal of Science and Technology, 10 (1). pp. 256-261.

Idachaba, F.E. Development of a Solar-ESP Wellhead System For Remote Wellhead Operations in Marginal Oilfields. Society O Petroleum Engineers.

Ndujiuba, Charles Uzoanya and Idachaba, F.E. and Ibhaze, Augustus E. An Empirical Propagation Model for Path Loss Prediction at 2100MHz in a Dense Urban Environment. Indian Journal of Science and Technology, 8 (1).

Idachaba, F.E. and Ekong, V. E. Implementation of a Low Power Sensor Using the IN4148 Signal Diode. 3GSM & Mobile Computing: An Emerging Growth Engine for National Development. pp. 180-190.

Idachaba, F.E. Nigerian Content Development in The Oil and Gas Sector: The Role of The Nigerian Academia. Society of Petroleum Engineers. pp. 1-9.

Book Section

Oni, O.O. and Idachaba, F.E. and Oshin, Oluwadamilola and Nkordeh, Nsikan (2015) A Comparative Review of Improvements in LTE. In: IAENG TRANSACTIONS ON ENGINEERING SCIENCES. World Scientific, pp. 336-347. ISBN 9789813142718

Conference or Workshop Item

Idachaba, F.E. (2020) Design of a Fiber Optic Based Wellhead Perimeter Monitoring System. In: SPE Annual Technical Conference and Exhibition, October 26–29, 2020, Online.

Idachaba, F.E. (2020) Development of a Realtime Gas Monitoring System Architecture for Manned and Unmanned Oil and Gas Processing Facilities. In: SPE Annual Technical Conference and Exhibition, October 26–29, 2020, Online.

Idachaba, F.E. and Odufowokan, Ayodeji and Uyi, Aiyudubie (2020) Development of an IoT Based Smart Campus: Wide Shuttle Tracking System. In: Proceedings of the Future Technologies Conference, 2020.

Idachaba, F.E. and Idachaba, Mercy E. (2020) Framework for an Integrated Ehealth Platform with Smart Diagnostic Engine for Improved Healthcare Access for Rural Dwellers. In: Proceedings of the Future Technologies Conference, 2020, Abuja Nigeria.

Oshin, Oluwadamilola and Kireev, Dmitry and Akinwande, Deji and Adetiba, E. and Idachaba, F.E. and Atayero, A. A. (2019) Advancing PoC Devices for Early Disease Detection using Graphene-based Sensors. In: International Conference on Engineering for Sustainable World, 2019, Online.

Oshin, Oluwadamilola and Hampel, Daniela and Idachaba, F.E. and Atayero, A. A. (2019) The First 1,000 Days: Trends towards Biosensing in Assessing Micronutrient Deficiencies. In: 3rd International Conference on Science and Sustainable Development, 2019, Online.

Idachaba, F.E. (2018) DEVELOPMENT OF A RAPID MENTORING SCHEME FOR MANAGING LARGE CLASSES IN ENGINEERING DEPARTMENTS. In: INTED2018 Conference, 5th-7th March 2018, Valencia, Spain.

Idachaba, F.E. (2018) OUTCOME BASED ENGINEERING CURRICULUM DESIGN: A SYSTEM FOR CURRICULUM STREAMLINING AND GRADUATE QUALITY IMPROVEMENT IN ENGINEERING. In: INTED2018 Conference, 5th-7th March 2018, Valencia, Spain.

Idachaba, F.E. (2017) 3G-5G Spectrum Bundling: Strategies for Rapid Technology Adoption for the 5G Communication Standard. In: World Congress on Engineering and Computer Science, October 25-27, 2017, San Francisco, USA.

Oshin, Oluwadamilola and Okhanigbe, Sebastian and Oni, O.O. and Idachaba, F.E. (2017) Development Of a Wearable for Remote Health Monitoring in Infants. In: World Congress on Engineering and Computer Science, October 25-27, 2017, San Francisco, USA.

Idachaba, F.E. and Olowoleni, J. O. and Ibhaze, Augustus E. and Oni, O.O. (2017) IoT Enabled Real-Time Fishpond Management System. In: World Congress on Engineering and Computer Science, October 25-27, 2017, San Francisco, USA.

Oshin, Oluwadamilola and Owoniyi, Adedoyin and Oni, O.O. and Idachaba, F.E. (2017) Programming Of NFC Chips: A university System Case Study. In: World Congress on Engineering and Computer Science, October 25-27, 2017, San Francisco, USA.

Idachaba, F.E. (2017) RFID Applications for Asset Monitoring and Multi-Level Asset Tracking. In: World Congress on Engineering and Computer Science, October 25-27, 2017, San Francisco, USA.

Oni, O.O. and Idachaba, F.E. (2017) Review of Selected Wireless System Path loss Prediction Models and its Adaptation to Indoor Propagation Environments. In: International MultiConference of Engineers and Computer Scientists, March 15 - 17, 2017, Hong Kong.

Idachaba, F.E. and Olowoleni, J. O. and Ibhaze, Augustus E. (2017) Design of an Automatic Renewable Energy Supply and Switching System. In: World Congress on Engineering and Computer Science, October 25-27, 2017, San Francisco, USA.

Idachaba, F.E. (2017) Spectrum Bundling Architectures for Increased Traffic Capacity in Mobile Telecommunication Networks. In: the International MultiConference of Engineers and Computer Scientists, March 15 - 17, 2017, Hong Kong.

Steve-Essi, Onyinyechi F. and Idachaba, F.E. (2016) Food Security and Technology Development in Africa. In: 3rd International Conference On African Development Issues (CU-ICADI), May 9- May 11 2016, Covenant University, Ota, Nigeria.

Ibhaze, Augustus E. and Ajose, Simeon O. and Atayero, A. A. and Idachaba, F.E. (2016) Propagation Model Optimization Based on Measurement from Macrocell Sites in Ikorodu-Epe, South-Western Nigeria. In: 3rd International Conference On African Development Issues (CU-ICADI), May 9- May 11 2016, Covenant University, Ota, Nigeria.

Idachaba, F.E. (2016) 5G networks: Open network architecture and densification strategies for beyond 1000x network capacity increase. In: 2016 Future Technologies Conference (FTC), 6-7 Dec. 2016, San Francisco, CA, USA.

Nkordeh, Nsikan and Lawson, Iwu C. and Idachaba, F.E. and Bob-Manuel, Ibinabo (2016) Design and Implementation of a Dual Band Mobile Phone Jammer. In: World Congress on Engineering and Computer Science, October 19-21, 2011, San Francisco, USA.

Idachaba, F.E. and Idachaba , Mercy E. (2016) Design of a Real-Time Epidemic Alert System for Cross Border Disease Control and Epidemic Management. In: Qatar Foundation Annual Research Conference Proceedings, March 2016.

Ibhaze, Augustus E. and Ajose, S.O. and Atayero, A. A. and Idachaba, F.E. (2016) Developing smart cities through optimal wireless mobile network. In: International Conference on Emerging Technologies and Innovative Business Practices for the Transformation of Societies (EmergiTech), 3-6 Aug. 2016, Balaclava, Mauritius.

Ibhaze, Augustus E. and Ajose, S.O. and Atayero, A. A. and Idachaba, F.E. (2016) Developing smart cities through optimal wireless mobile network. In: IEEE International Conference on Emerging Technologies and Innovative Business Practices for the Transformation of Societies (EmergiTech), 3-6 Aug. 2016, Balaclava, Mauritius.

Gabriels, Rejoyce and Oni, O.O. and Oshin, Oluwadamilola and Idachaba, F.E. and Nkordeh, Nsikan (2016) Development and Implementation of a Smart Medical Cabinet using RFID Technology in Developing Countries. In: World Congress on Engineering, June 29 - July 1, 2016, London, U.K..

Idachaba, F.E. and Idachaba , Mercy E. (2016) Development of an Automated, Real-Time Health Monitor and Emergency Alert System for the Elderly. In: Qatar Foundation Annual Research Conference Proceedings, March 2016.

Ibhaze, Augustus E. and Eleanor, Ezimah C. and Idachaba, F.E. (2016) E-health monitoring system for the aged. In: International Conference on Emerging Technologies and Innovative Business Practices for the Transformation of Societies (EmergiTech), 3-6 Aug. 2016, Balaclava, Mauritius.

Idachaba, F.E. (2016) Gas-Driven Power Generation System: The Niger Delta Contribution to the Nigerian National Grid. In: Conference Source Offshore Technology Conference, 2-5 May, 2016, Houston, Texas, USA.

Nkordeh, Nsikan and Idachaba, F.E. and Bob-Manuel, Ibinabo and Oni, O.O. (2016) Implementing Orthogonal Frequency Division Multiplexing Using IFFT/FFT. In: World Congress on Engineering, June 29 - July 1, 2016, London, U.K.. (In Press)

Nkordeh, Nsikan and Idachaba, F.E. and Bob-Manuel, Ibinabo and Oni, O.O. (2016) Received Signal Strength Measurement: Suboptimal Handing-over. In: World Congress on Engineering, June 29 - July 1, 2016, London, U.K..

Oshin, Oluwadamilola I and Ndujiuba, Charles Uzoanya and Idachaba, F.E. (2015) 3GPP LTE: The Relevance of Interworking. In: The 2015 World Congress in Computer Science, Computer Engineering, and Applied Computing, July 27-30, 2015, Las Vegas, USA.

Idachaba, F.E. and Oni, O.O. (2015) Low Power VTOL UAV Deployments for Urban Area Monitoring. In: World Congress on Engineering.

Oni, O.O. and Oshin, Oluwadamilola and Oni, Oluyinka and Idachaba, F.E. (2015) Web-based Portal for Vehicle Licensing Management. In: World Congress on Engineering, July 1 - 3, 2015, London, U.K..

Idachaba, F.E. and Mbeh, K.E and Oshin, Oluwadamilola and Oni, O.O. (2015) Webportal Applications: Automated Student Clearance Portal. In: World Congress on Engineering, July 1 - 3, 2015, London, U.K..

Idachaba, F.E. and Oni, O.O. (2015) Development of a Bluetooth-Based Contactless Automated Attendance Capture System for Large Halls and Auditoriums. In: 2nd Covenant University Conference on African Development Issues (CU-ICADI), 11th - 13th May, 2015, Africa Leadership Development Center, Covenant University, Ota, Nigeria..

Oni, O.O. and Idachaba, F.E. and Oshin, Oluwadamilola and Nkordeh, Nsikan (2015) A Comparative Review of Improvements in Long Term Evolution. In: World Congress on Engineering and Computer Science, July 1 - 3, 2015, London, U.K..

Oni, O.O. and Idachaba, F.E. and Oshin, Oluwadamilola and Nkordeh, Nsikan (2015) A Comparative Review of Improvements in Long Term Evolution. In: the World Congress on Engineering, July 1 - 3, 2015, London, U.K..

Oni, O.O. and Idachaba, F.E. and Nkordeh, Nsikan (2015) GSM – LTE Migration: Deployment Issues for Operators in Developing Countries. In: World Congress on Engineering and Computer Science, July 1 - 3, 2015, London, U.K..

Nkordeh, Nsikan and Idachaba, F.E. and Oni, O.O. (2015) Microstrip Patch Antenna: Comparing Performance of a Rectangular and a Circular Patch at LTE Bluetooth and GSM Frequencies. In: World Congress on Engineering, July 1 - 3, 2015, London, U.K..

Ifijeh, H. A. and Idachaba, F.E. and Oluwafemi, I. B. (2015) Performance Evaluation of The Quality of VoIP Over WLAN Codecs. In: The World Congress on Engineering, July 1 - 3, 2015, London, U.K..

Nkordeh, Nsikan and Atayero, A. A. and Idachaba, F.E. and Oni, O.O. (2014) LTE Network Planning using the Hata-Okumura and the COST-231 Hata Pathloss Models. In: World Congress on Engineering 2014, July 2-4, 2014, London, UK.

Takpor, Temitope and Idachaba, F.E. (2014) Analysis and Simulation of LTE Downlink and Uplink Transceiver. In: Proceedings of the World Congress on Engineering, July 2 - 4, 2014, London, U.K..

Orovwode, H. E. and Adegbenro, O. and Awosope, C. O. A. and Idachaba, F.E. and Abdulkareem, Ademola (2014) Capacity Integration into a Microgrid, a Tool for Electrical Energy Supply Cost Reduction in Nigeria- Covenant University as a Case Study. In: Proceedings of the World Congress on Engineering, July 2 - 4, 2014, London, U.K..

Idachaba, F.E. and Tommy, U.S (2014) RFID Laptop Monitoring and Management System. In: Proceedings of the World Congress on Engineering, July 2 - 4, 2014, London, U.K..

Onaolapo, J. O. and Idachaba, F.E. and Badejo, J. A. and Odu, T. and Adu, O. I. (2014) A Simplified Overview of Text-To-Speech Synthesis. In: Proceedings of the World Congress on Engineering, July 2 - 4, 2014, London, U.K..

Idachaba, F.E. (2014) BROADCAST TELEVISION: A TOOL FOR RURAL E­LEARNING DEPLOYMENT. In: 8th International Technology, Education and Development Conference , 10-12 March 2014, Valencia, Spain .

Idachaba, F.E. (2014) Development of a Self Configuring Mesh Network Architecture for Digital Oilfield Implementation. In: Petroleum Engineers Source SPE Nigeria Annual International Conference and Exhibition, 5-7 August 2014, Lagos, Nigeria.

Idachaba, F.E. (2014) Exception Based Monitoring of Oil and Gas Pipelines Using VTOL Type-Unmanned Aerial Vehicles (UAV). In: SPE Nigeria Annual International Conference and Exhibition, 5-7 August 2014, Lagos, Nigeria.

Idachaba, F.E. and Ike, Dike U. and Orovwode, H. (2014) Future Trends in Fiber Optics Communication. In: the World Congress on Engineering 2014, July 2 - 4, 2014, London, U.K..

Idachaba, F.E. (2014) Industry-Academia Collaborations: The Shell Sabbatical Model. In: SPE Nigeria Annual International Conference and Exhibition, 5-7 August 2014, Lagos, Nigeria..

Nkordeh, Nsikan and Atayero, A. A. and Idachaba, F.E. and Oni, O.O. (2014) LTE Network Planning using the Hata-Okumura and the COST-231 Hata Pathloss Models. In: World Congress on Engineering, July 2 - 4, 2014, London, U.K..

Oni, O.O. and Atayero, A. A. and Idachaba, F.E. and Alatishe, A. S. (2014) LTE Networks: Benchmarks, Prospects and Deployment Limitation. In: Proceedings of the World Congress on Engineering, July 2 - 4, 2014, London, U.K..

Alatishe, A. S. and Adu, O. I. and Atayero, A. A. and Idachaba, F.E. (2014) A Performance Review of the Different Path Loss Models for LTE Network Planning. In: Proceedings of the World Congress on Engineering, July 2 - 4, 2014, London, U.K..

Idachaba, F.E. and Wokoma, Esther (2014) Project Management, Local Content and Value Delivery. In: Offshore Technology Conference, 5-6 May 2014, Houston, Texas, USA..

Oshin, Oluwadamilola and Idachaba, F.E. and Alatishe, A. S. (2014) Refarming 1800MHz GSM Spectrum to LTE: The Effects on Coverage Based on Pathloss Estimation. In: the World Congress on Engineering 2014, July 2 - 4, 2014, London, U.K..

Idachaba, F.E. and Okuns, Godwin and Wokoma, Esther and Awobamise, Bola (2014) Remote Pipeline Pressure Monitoring Using Low Power Wireless Transmission. In: SPE Nigeria Annual International Conference and Exhibition, 5-7 August 2014, Lagos, Nigeria..

Idachaba, F.E. (2014) Robotics and the Oil and Gas Production Process: Right Technology, Right Timing. In: International Petroleum Exhibition and Conference, 10-13 November 2014, Abu, Dhabi, UAE.

Idachaba, F.E. (2014) Unmanned Aerial Vehicles and Dynamic Pipeline Pressure Profiles: Tools for Oil-Spill Detection and Localization. In: Petroleum Exhibition and Conference, 10-13 November 2014, Abu Dhabi.

Idachaba, F.E. and Wokoma, Esther and Okuns, Godwin and Brown, Colin and Walker, Lan (2013) Fiber Optic based Pipeline Oil and Gas Leak and Intruder Detection System with Security Intervention Plan. In: SPE Nigeria Annual International Conference and Exhibition, 5-7 August 2013, Lagos, Nigeria..

Idachaba, F.E. (2013) The Flipped Classroom and Open Courseware: Tools for Improving the Quality of the Nigerian Graduate. In: 5th African Regional Conference on Engineering Education ARCEE Nigeria, 2013.

Majekodunmi, T. O. and Idachaba, F.E. (2011) A Review of the Fingerprint, Speaker Recognition, Face Recognition and Iris Recognition Based Biometric Identification Technologies. In: Proceedings of the World Congress on Engineering, July 6-8, 2011, London, U.K..

Idachaba, F.E. and Olowoleni, J. O. and Ibhaze, Augustus E. and Oni, O.O. IoT Enabled Real-Time Fishpond Management System. In: WCECS 2017. (Unpublished)

Other

Idachaba, F.E. (1998) Instability of National Agricultural Research Systems in Sub-Saharan Africa:Research Report Lessons from Nigeria. International Service for National Agricultural Research.