Concurrent experimentation in NCSLab: A scalable approach for online laboratories

Lei, Zhongcheng; Zhou, Hong; Hu, Wenshan; Liu, Shuai

doi:10.1016/j.future.2023.05.014

Cited by 3 publications

(3 citation statements)

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“…The control of the equipment is commonly provided by the control software that runs the lab computer [23]; however, some experiments might also require a dedicated controller. As a result, some architectures unify the roles of the controller and the lab computer, commonly referred to as the lab server [1] or simply the controller [21], [22], whereas other architectures explicitly separate the controller from the lab server [3], [9], [10], [24].…”

Section: A Lab Layermentioning

confidence: 99%

“…Amazon DynamoDB was used as the database using the GraphQL query language. 10 The different AWS services were managed on the front-end through the Amplify library from Amazon. AWS Amazon Cognito was used for authentication and authorization.…”

Section: ) Application Layermentioning

confidence: 99%

“…This can represent limitations for many laboratories with limited network infrastructure and development resources, apart from problems with institutional security protocols and policies [6], [7]. Alternatives to the self-managed lab server have been presented, such as the Laboratory Infrastructure as a Service (LIaaS) model [8] with its Experiment Dispatcher, or the NCSLab [9], [10], [11] with its Experiment Server. However, even though these architectures do not require local infrastructure with public access to offer the laboratory resources, it is still necessary to abstract laboratories as servers, a service logic must be managed, and the lab still must be adapted to be compatible with these servers.…”

Section: Introductionmentioning

confidence: 99%

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Remote Labs Meet Computational Notebooks: An Architecture for Simplifying the Workflow of Remote Educational Experiments

Vanegas-Guillén,

Parra-Rosero,

Muñoz-Antón

et al. 2023

IEEE Access

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Online laboratories and computational notebooks have established themselves as essential tools in the fields of engineering and science education, significantly enhancing the teaching and learning experience. Despite the benefits of remote laboratories, and although architectures, models, and tools have been proposed to facilitate the work involved in their implementation, challenges remain in the development lifecycle. This paper proposes a novel architecture that simplifies the development and management of remote experiments using a publisher-subscriber communication paradigm to securely and efficiently integrate WebAssembly computational notebooks. This approach eliminates the need for additional infrastructure for communication at the lab stations. It also avoids the need for servers to deploy notebooks, because all operations, calculations, and data processing run locally in the user's web browser. To achieve this, a remote laboratory management system (RLMS) interoperable with virtual learning environments was designed and implemented, including notebook-based authoring, learning scenarios, and grading tools. As a case study, remote experiments were developed to characterize and evaluate the performance of heat exchangers using a thermal fluid systems test bench built for this project. Several quality criteria categorized into technical, educational, and adaptability groups were quantitatively evaluated using the responses of 70 participants from two different universities. The analysis highlighted both the advantages and challenges of the proposal, with a significant emphasis on interaction, scalability, reusability, interoperability, and accessibility. The results confirmed the effectiveness of the notebooks in each phase of the remote experiments, demonstrating an increase in students' active and autonomous participation and exploration.

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