PREVIOUS WORK EXPERIENCE

I was an Associate Professor in the School of Computer Science at the University of the Witwatersrand until the end of 2011.

RESEARCH INTERESTS

Algorithms with application in image processing and computational geometry. Computer Science Education.

ACADEMIC CV

Click here to see an academic cv

Click here to see my Google Scholar citations

My Open Researcher & Contributor ID (orcid) number is https://orcid.org/0000-0001-9081-8145

My Scopus Author Identifier is 7004408250

 

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Click here for my postgraduate resources website.

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(This page was updated on 29 May 2019)

Journal publications

Zimudzi, E.; SANDEID; Rollings, N ; Omlin, C (2021)
Remote Sensing of Mangroves Using Unmanned Aerial Vehicles: Current state and future directions
Journal of Spatial Science
(66) 2
pp 195-212
View/download link: https://doi.org/10.1080/14498596.2019.1627252

Okuboyejo, O.Y.; Ewert, S. ; SANDEID (2021)
Goofs in the Class: Students' Errors and Misconceptions when Learning Regular Expressions
Communications in Computer and Information Science
pp In preparation

Pise, A ; Vadapalli, H ; SANDEID (2021)
Relational reasoning using neural networks: A survey
International Journal of Uncertainty, Fuzziness and Knowledge-Based Systems
(-) -
pp Accepted for publication

Pise, A ; Vadapalli, H ; SANDEID (2020)
Facial emotion recognition using temporal relational network: An application to e-learning
Multimedia Tools and Applications
pp Published online
View/download link: https://doi.org/10.1007/s11042-020-10133-y

Jingili, N ; Ewert, S. ; SANDEID (2020)
Syntactic generation of similar pictures
Advances in Intelligent Systems and Computing
(947)
pp 153-180

E Zimudzi ; SANDEID; N Rollings ; C Omlin (2019)
Segmenting Mangrove Ecosystems Drone Images Using SLIC Superpixels
Geocarto International
(34) 14
pp 1648–1662
View/download link: https://www.tandfonline.com/doi/full/10.1080/10106049.2018.1497093

Ewert, S ; Jingili, N ; Mpota, L ; SANDEID (2019)
Bag Context Picture Grammars
Journal of Computer Languages
(51)
pp 214-221
View/download link: https://doi.org/10.1016/j.cola.2019.04.001

PILKICL; SANDEID (2016)
Learners and educators perspective on the value of web design in the South African Grade 11 Computer Applications Technology curriculum
African Journal of Research in Mathematics, Science and Technology Education (AJRMSTE).
(20) 3
pp 267-277
View/download link: 1811-7295 (Print) 2469-7656 (Online)

SANDEID; Alexander, PM (2015)
A history of computing doctorates in South Africa from 1978 to 2014
South African Computer Journal
(57) 1
pp 58-89
View/download link: DHET

PILKICL; SANDEID (2014)
An online collaborative document creation exercise in an ODL research project module
Computers & Education
(77)
pp 116-124
View/download link: https://doi.org/10.1016/j.compedu.2014.04.014

SANDEID; Tamarisk Scholtz (2012)
First year students understanding of the flow of control in recursive algorithms
African Journal of Research in Mathematics, Science and Technology Education
(16) 3
pp 348-362

Conference proceedings

Choshi, P ; SANDEID; van Biljon, J A (2021)
Mobile applications in supporting Open and Distance Learning students’ research
IST-Africa

TJ Ramabu ; SANDEID; SCHOEMA (2021)
Teaching and Learning CS1 with an Assist of Manipulatives
IST-Africa

Dude, SS ; SANDEID; Marange, BK (2021)
A Low Cost Application for Diagnosing Cotton Plant and Leaf Diseases Using Convolutional Neural Networks
International Conference on Science, Engineering & Technology (ICSTE-21)
Malaysia (and virtual)
pp Accepted for publication

LEHONS; van Biljon, J A; SANDEID (2019)
Open-distance electronic learning environments: Supervisors’ views on usability
The ICT and Society Conference (ICTAS2019)
Durban
pp Paper 26; Electronic publication

Aruleba, K ; Ewert, S ; SANDEID; Raborife, M (2018)
Preprocessing and Feature Extraction Technique for Hand-drawn Finite Automata Recognition
IST-Africa
pp Paper 48 (9 pages) Electronic proceedings

Nuru Jingili ; Sigrid Ewert ; SANDEID (2018)
Measuring Perceptual Similarity of Syntactically Generated Pictures
8th International Conference on Simulation and Modeling Methodologies, Technologies and Applications (SIMULTECH 2018)
Porto, Portugal
pp 244-255

SANDEID; PILKICL; Alexander, PM (2016)
The Impact of Leadership, Trust and Time on Technology Choice by Virtual Teams
SAICSIT 2016
Johannesburg
978-1-4503-4805-8
pp Paper 36 - electronic proceedings

SANDEID; PILKICL; Van Staden, W (2015)
Errors made by students when designing Finite Automata
44th Annual SACLA Conference
Johannesburg
978-0-620-65158-5
pp 110-118
View/download link: https://tinyurl.com/hegytv9

JJ van der Linde ; SANDEID (2015)
Enlarging Directed Graphs To Ensure All Nodes Are Contained In Cycles
SAICSIT 2015
Stellenbosch
978-1-4503-3683-3 / ACM
pp Paper Number 41 Electronic proceedings

M. Rasekgala ; S. Ewert ; SANDEID; T. Fogwill (2014)
Requirements for secure graphical password schemes
IST-Africa 2014 (06-09 May)
Maritius
978-1-905824-43-4
pp Electronic Proceedings
View/download link: http://www.ist-africa.org

SANDEID; PILKICL (2014)
Increasing personal research output by utilising Honours students
Proceedings of the 43rd Conference of the Southern African Computer Lecturers’ Association (SACLA)
Port Elizabeth
ISBN: 978-1-920508-34-0
pp 146-152

B. Okundaye ; S. Ewert ; SANDEID (2014)
Perceptual Similarity of Images Generated using Tree Grammars
SAICSIT
Pretoria
ISBN: 978-1-4503-3246-0
pp 286-296

Abejide Ade-Ibijola ; S. Ewert ; SANDEID (2014)
Abstracting and Narrating Novice Programs Using Regular Expressions
SAICSIT
Pretoria
ISBN: 978-1-4503-3246-0
pp 19-28

Rasekgala, M ; SANDEID; Ewert, S ; Fogwill, T (2014)
Shape grammar model generating secure visual passwords: The move towards completely grammar based images
Second International Conference on Advances in Computing, Communication and Information Technology - CCIT 2014
Birmingham, UK
978-1-63248-051-4
pp 208-214

B. Okundaye ; S. Ewert ; SANDEID (2014)
A Novel Approach to Visual Password Schemes Using Tree Picture Grammars
Proceedings of the 2014 PRASA, RobMech and AfLaT International Joint Symposium
Cape Town
ISBN: 978-0-620-62617-0
pp 247-252

SANDEID (2013)
Cooperating to buy shoes: An application of picking cycles in directed graphs
SAICSIT
East London
978-1-4503-2112-9
pp 8-16

SANDEID (2013)
Cooperating to buy shoes in the real world: Online cycle picking in directed graphs
SAICSIT
East London
978-1-4503-2112-9
pp 286-294

B Okundaye ; S Ewert ; SANDEID (2013)
Determining Image Similarity from Pattern Matching of Abstract Syntax Trees of Tree Picture Grammars
PRASA
Johannesburg
ISBN: 978-0-86970-771-5
pp 83-90

Okuboyejo, O ; Ewert, S ; SANDEID Goofs in the class: Students’ errors and misconceptions when learning regular expressions
SACLA 2020
pp Accepted


Conference proceedings (non peer-reviewed)

Abejide Ade-Ibijola ; Sigrid Ewert ; (2015)
Introducing Code-Adviser: A DFA-driven Electronic Programming Tutor
20th International Conference on the Implementation and Application of Automata (CIAA), pp. 1-6.,
Springer LNCS 9223. DOI: 10.1007/978-3-319-22360-5 25
pp 1-6


Conference Presentations

TJ Ramabu ; SANDEID; SCHOEMA (2021)
Manipulatives for teaching introductory programming to struggling students: A case of nested-decisions.
13th International Conference on Computer Supported Education (CSEDU 2021)
online

A.Ade-Ibijola ; S. Ewert ; (2014)
How many ways can we skin a cat? Searching the Space of Novice Program Plan Variations
Proceedings of the 2014 PRASA, RobMech and AfLaT International Joint Symposium
Cape Town

Book/chapters

Jingili, N ; Ewert, S ; SANDEID Syntactic generation of similar pictures
2020
Springer, Cham
pp Chapter 8, pages 153-180
ISBN: ebook: 978-3-030-35944-7. softcover: 978-3-030-35943-0

Theses/dissertations

SANDEID (2002)
The Axial Line Placement Problem
PhD, University of Pretoria

SANDEID (1991)
Fast Robust Restoration of Binary Images
MSc, University of the Witwatersrand

Other

SANDEID
Publishing in Good Journals, Viewpoint article for the South African Computer Journal, 30(2), 2018, pp 73–79