M. O. Soliman, Harold A. Johnson,
... Within the range of these data, the parameter ZLto = Lu∞to is a sufficient criterion to conclude that: for 0·28 ⩽ ZLto ⩽ 2 a turbulent flow solution is in agreement with the data; for 5 ⩽ ZLto < ∞ the Chambré solution (slug flow) agrees well with the data; and for 2 < ZLto < 5 a semiempirical correlation is developed which satisfactorily ... Dans la gamme de ces résultats, le paramètre ZLto = Luto est un critère suffisant pour conclure que: lorsque 0,28 ⩽ ZLto ⩽ 2, une solution avec écoulement turbulent est en ... bon accord avec les résultats; et lorsque 2 < ZLto < 5, on montre qu'une relation semi-empirique ...
Tópico(s): Fluid Dynamics and Turbulent Flows
1968 - Elsevier BV | International Journal of Heat and Mass Transfer
Brian Nicholson, Petter Nielsen, Johan Ivar Sæbø,
... principles (see https://rlabs.org/innovations/). The RLabs Zlto digital rewards platform is where members are incentivised ...
Tópico(s): Sharing Economy and Platforms
2021 - Wiley | Information Systems Journal
Michael Gu, Allan Van Der Meulen, Kurt Appolis, Christine Taphel, Marlon Parker, Gary Wills,
Zlto(zlah-toh) is a project to provide secure validation of credentials for young people.Many African ... paper we will describe how we implement the Zlto system to provide proof of skills completed through ... using blockchain.Since its first deployment in 2016, Zlto has processed over 1 million transactions.We present ...
Tópico(s): Spam and Phishing Detection
2019 - | International Journal for Information Security Research
ABSTRACTThis article presents a study of a youth café initiative for skills training in South Africa where a reward system with community currency (the ZE system) is implemented on smartphones to promote personal development and prepare youth for the job market in socially challenged communities. The youth receive currency in exchange for taking part in skills training and community work that can be spent on services and consumables in the local community. This study assesses the qualitative performance ...
Tópico(s): Impact of Technology on Adolescents
2023 - Taylor & Francis | Behaviour and Information Technology