Josephine Nneamaka Onyeka-Ubaka

University of Lagos

Publishing since 2013, latest 2026

Economics and Econometrics
Finance
Management Science and Operations Research
Electrical and Electronic Engineering
Artificial Intelligence
General Energy

Their record on OpenAlex

Publications: 112013–2026
Citations: 6to those papers
h-index: 1i10-index 0
Field-weighted impact: 0.071.00 is the world average
World top 10%: 0%0 of 11 scored papers
Open access: 91%10 papers free to read

By year

Papers, and the citations to them

Publications, left axisCitations to that year’s papers, right axis2026 still in progress

Publications

11 in all

Application of Asymmetric GARCH Mixture Models to Export Price of Natural Gas in Nigeria
2026Journal of Statistical Modelling and AnalyticsJournalOpen access0 citations10.22452/josma.vol8no1.4
Evaluation of Heavy Metals in Gadus morhua and the Associated Cancer Risks
2024American Journal of Environmental Sciences

Download CV:PDFWord

Citations received each year

Peerford

To all their work, old papers included. Google Scholar also counts citations from theses, books and web pages, so its line runs higher.

What they work on

From the classification of each paper

Subfields

Economics and Econometrics873%
Finance764%
Management Science and Operations Research436%
Electrical and Electronic Engineering218%
Artificial Intelligence19%
General Energy19%
Organic Chemistry19%
Statistics and Probability19%

Physical Sciences
Social Sciences

Topics most written on

Financial Risk and Volatility Modeling7
Market Dynamics and Volatility7
Complex Systems and Time Series Analysis4
Stock Market Forecasting Methods3
Energy Load and Power Forecasting2
Advanced Text Analysis Techniques1
Bayesian Methods and Mixture Models1
Efficiency Analysis Using DEA1
Global Energy Security and Policy1
Probability and Statistical Research1
Wood and Agarwood Research1

Who they write with

Their most frequent co-authors, and the papers those co-authors share

Where their co-authors are

0% of their papers have a co-author abroad

Most frequent partner countries

Papers with at least one author in that country.

Institutions written with most

Where they publish

American Journal of Environmental Sciences1
American journal of mathematics and statistics1
Annals of Mathematics and Computer Science1
Asian Journal of Probability and Statistics1
International Journal of Probability and Statistics1
International Journal of Statistical Distributions and Applications

Development goals addressed

From each paper’s title and abstract

3Good health and well-being2
8Decent work and economic growth1
16Peace, justice and strong institutions1
17Partnerships for the goals1

Most cited

Bayesian GARCH models for Nigeria Covid-19 data
Annals of Mathematics and Computer Science
20212 citationsOpen access · Green
Evaluation of Heavy Metals in Gadus morhua and the Associated Cancer Risks
American Journal of Environmental Sciences3
20241 citationOpen access · Diamond
Self-exciting Threshold Autoregressive Model with Application to Crude Oil Production in Nigeria
Asian Journal of Probability and Statistics

Self-exciting Threshold Autoregressive Model with Application to Crude Oil Production in Nigeria

2023Asian Journal of Probability and StatisticsJournalOpen accessFirst author1 citation10.9734/ajpas/2023/v22i1473

Analyzing Dynamic Regimes of GARCH Model on Stock Price Volatility

2023International Journal of Statistical Distributions and ApplicationsJournalOpen accessSenior author0 citations10.11648/j.ijsd.20230901.13

The Estimation of Heavy Tails in Non-linear Models

2023Tanzania Journal of ScienceJournalOpen accessFirst author0 citations10.4314/tjs.v49i2.5

Bayesian GARCH models for Nigeria Covid-19 data

2021Annals of Mathematics and Computer ScienceJournalOpen access2 citations

A Bayesian Approach for Validation of Election Results

2020Nigerian Journal of Basic and Applied SciencesJournalOpen accessSenior author1 citation10.4314/njbas.v27i2.4

Estimating Historical Volatility via Dynamical System

2015American journal of mathematics and statisticsJournalOpen accessFirst author0 citations

Conditional Variance Parameters in Symmetric Models

2014International Journal of Probability and StatisticsJournalOpen accessFirst author1 citation

Time Series Analysis of Empirical Regularities in Nigeria Banking Sector

2013International Journal of Statistics and AnalysisJournalOpen accessFirst author0 citations

International Journal of Statistics and Analysis1

Journal of Statistical Modelling and Analytics1

How it can be read

91% free to read

Diamond 5 · 45%Free to read and to publish
Hybrid 1 · 9%Open in a subscription journal
Green 4 · 36%A copy in a repository
Closed 1 · 9%Behind a paywall

Open access · Diamond

A Bayesian Approach for Validation of Election Results

Nigerian Journal of Basic and Applied Sciences16

20201 citationOpen access · Diamond

Conditional Variance Parameters in Symmetric Models

International Journal of Probability and Statistics8

20141 citationOpen access · Green