S.O. Ojung’a, JO Nyakinda, E Okuto and JA Mullah Sensitivity analyses of population projection
matrix of Cestrum aurantiacum , International Journal of Statistics and Applied Mathematics 2020;
5(6): 43-47 DOI: https://doi.org/10.22271/maths.2020.v5.i6a.612
Bala, P., Ojung’a, S., Okumu, J., Kisiwa, A., Langat, D. and Nyambati, R. (2020) “Tree-Based
Conflict Management Mechanism among Small Landholders in Agroforestry Systems of Kenya”, East African
Journal of Forestry and Agroforestry, 2(2), pp. 24-39. doi: 10.37284/eajfa.2.2.214
S.O.Ojung’a, J.O Nyakinda, E.Okuto and J.A Mullah (2020) . Extensions of Lefkovitch matrix for
modeling invasive Cestrum aurantiacum population Dynamics. Mathematical Theory and Modeling. ISSN
2224-5804 (Paper) ISSN 2225-0522 (Online).Vol.10, No.7, 2020
Jesse Omondi Owino & Peter Murithi Angaine & Alice Adongo Onyango & Samson Okoth Ojung’a & John
Otuoma, 2020. "Evaluating Variation in Seed Quality Attributes in Pinus Patula Clonal Orchards using
Cone Cluster Analysis," Journal of Forests, Conscientia Beam, vol. 7(1), pages 1-8
S. O. Ojung’a, J. O. Nyakinda, E. Okuto, J. A. Mullah, Invasive Species Population Status Modeling
Using Stage Based Matrix: Mount Elgon Ecosystem. Mathematical Theory and Modeling www.iiste.org ISSN
2224-5804 (Paper) ISSN 2225-0522 (Online) DOI: 10.7176/MTM Vol.9, No.2
Jonah Kiprop, David Langat, Joshua Cheboiwo, Joram Kagombe, Abdala Kisiwa, Stella Gatama, Samson
Okoth. Value of Pollination Services in Farmlands Adjacent to Mau, Cherangany and Mt. Elgon Forests.
Journal of Natural Sciences Research. ISSN 2224-3186 (Paper) ISSN 2225-0921 (Online) DOI: 10.7176/JNSR
Vol.9, No.10, 2019
Thalma Khalwale, David Langat, Paul Abuom and Samson Okoth, Factors Influencing Adoption of on-Farm
Tree Planting in Shinyalu Sub-County, Kakamega, Kenya International Journal of Forestry and
Horticulture 2018, 4(2) : 38-48. doi:
http://dx.doi.org/10.20431/2454-9487.0402006
Ojung’a Okoth Samson, Mose Nyandwaki, Peter Mutwiri, Otulo Wandera, Omollo Oriema and Edgar
Otumba., 2014 . The Application of Logistic Regression in Modeling of Survival Chances of HIV-Positive
Patients under Highly Active Antiretroviral Therapy (HAART): A Case of Nyakach District, Kenya.
Journal of Medicine and Clinical Sciences. Vol. 3, No 3. pp. 14-20
Otwande Andrea, Ojung’a Okoth Samson, Otulo Wandera Cyrilus, Fred Onyango. Analysis of Seasonal
Time Series with Missing Observations of Fish Harvesting in Lake Victoria, Kenya. Mathematical Theory
and Modeling www.iiste.org ISSN 2224-5804 (Paper) ISSN 2225-0522 (Online) Vol.4, No.14, 2014
Cyrilus, Otulo Wandera, Ojung’a Okoth Samson and Otumba Edgar Ouko. “Screening of New strains of
sugarcane using Augmented Block Designs.” Mathematical theory and modeling 4 (2014): 153-161
M’Mukiira Peter Mutwiri, Ojung’a Samson Okoth, Fredrick Onyango, Two-Factor Factorial Design
Application in Analyzing Differential Performance Between Single-Sex Schools and Mixed Schools in
Compulsory Subjects at KCSE:Case study in Homa Bay County, Kenya. Mathematical Theory and Modeling
www.iiste.org ,ISSN 2224-5804 (Paper) ISSN 2225-0522 (Online),Vol.4, No.14, 2014
J. M. Nyandwaki, E. A. Odhiambo, S. O. Ojung’a and F. O. Onyango (2014),” Application of Markov
Chain Model in Studying Progression of Secondary School Stu-dents by Sex During The Free Secondary
Education: A case Study of Kisii Central District” Mathematical Theory and Modeling, The International
Institute for Science, Technology and Education (IISTE), 4, 73-84., 2014.
Technical Notes /Protocols/Guidelines
Jared Amwatta Mullah, Boaz Ngonga and Samson Ojung’a: management of cestrum aurantiacum in Kenya; A
guide for forest managers and stakeholders in rehabilitation of invaded areas in natural forest and
agricultural landscapes-
Langat D., CheboiwoJ ., Okoth S., Kiprop J., Kisiwa A., Guzha A., Smith N., DeMeo T., Kagombe J.,
Gatama S.1, Kerkering J. and Doud : Economic Value of the Water Towers in Kenya,
Experience
Sept 2020 –Date
: Research Scientist I, Biometrician, Kenya Forestry Research Institute (KEFRI), P.O Box 20412 -00200
Nairobi, Kenya.
Sept 2015-Sept 2020
: Research Scientist II, Biometrician, Kenya Forestry Research Institute (KEFRI), P.O Box 20412 -00200
Nairobi, Kenya.
Jan 2010 – Aug 2015
: District Field Officer-Ministry of Devolution and Planning Ministry of Devolution and Planning
Kengya, Kisumu, Kenya
May 2008– Jan 2010
: Credit officer/ Relationship Officer Credit- Equity Bank Ltd, Mbita Branch
Academic Qualification
2018-Date
: PhD. Integrated Soil Fertility Management: Kenyatta University (On-going)
2012-2015
: MSc. Integrated Soil Fertility Management: Kenyatta University, Kenya
2006-2010
: B.Sc. Environmental Studies (Resource Conservation): Kenyatta University, Kenya
2014 – 2021
: on going: Doctor of Philosophy (Ph.D.) -Applied Statistics -Jaramogi Oginga Odinga University of
Science and Technology
2010 – 2012
: MSC Applied Statistics -Maseno University
2010 – 2011
: Post Graduate Certificate in Conflict and Development; The Open University
1999 – 2004
: Bsc Applied Statistics -Maseno University
Skills
Research Have participated in several research surveys in various field (health, education water
and sanitation, economic surveys) and gained a lot of experience in conducting research.
Data Analysis Posses data analysis skills. I have adequate knowledge and experience in using SPSS,
R and Genstat.
Project Management- Have wide field experience in project planning and management
Public Policy Able to analyze and formulate policies.
M&E Have undergone several trainings in M & E by the Monitoring and Evaluation Directorate and well
conversant with NIMES, UNDP M &E Models. I have field experience of four years in Participatory
Monitoring and Evaluation. Experienced in designing M& E plans and log frame matrix
Other Courses
December 2013
: Certificate in Public Policy Management-Kenyatta University, Nairobi
February 2013
: Certificate in Monitoring and Evaluation-Kenyatta University, Nairobi,
November 2013
: Certificate in SPSS, R and Genstat Maseno University, Kisumu City Campus
September 1999
: Computer Skills: Proficient on PCs and Windows (Ms Office suite)
Statistical Packages
: MINITAB and Programming in Pascal, Maseno University, Maseno.
Computers
: Proficiency in Windows operating systems and Ms Office, Excel and Ms Access Data Base.