Publications by Nan Li | EPFL Graph Search

CURLING - I. The influence of point-like image approximation on the outcomes of cluster strong lens modelling

Jean-Paul Richard Kneib, Huanyuan Shan, Nan Li

Cluster-scale strong lensing is a powerful tool for exploring the properties of dark matter and constraining cosmological models. However, due to the complex parameter space, pixelized strong lens modelling in galaxy clusters is computationally expensive, ...

Oxford Univ Press2024

Biomechanical forces promote blood development through prostaglandin E2 and the cAMP-PKA signaling axis

Olaia Maria Naveiras Torres-Quiroga, Nan Li

Blood flow promotes emergence of definitive hematopoietic stem cells (HSCs) in the developing embryo, yet the signals generated by hemodynamic forces that influence hematopoietic potential remain poorly defined. Here we show that fluid shear stress endows ...

2015

Augmenting Collaborative MOOC Video Viewing with Synchronized Textbook

Pierre Dillenbourg, Lukasz Kidzinski, Nan Li

We designed BOOC, an application that synchronizes textbook content with MOOC (Massive Open Online Courses) videos. The application leverages a tablet display split into two views to present lecture videos and textbook content simultaneously. The display o ...

Springer-Verlag Berlin2015

Augmenting Learning Activities with Contextual Information Scent

Nan Li

Students often have information needs while carrying out a multitude of learning activities at universities. When information is needed for investigating a problem, the student may interrupt the work and switch to an information seeking task. As Internet c ...

EPFL2015

How Do In-video Interactions Reflect Perceived Video Difficulty?

Pierre Dillenbourg, Patrick Jermann, Lukasz Kidzinski, Nan Li

Lecture videos are the major components in MOOCs. It is common for MOOC analytics researchers to model video behaviors in order to identify at-risk students. Much of the work emphasized prediction. However, we have little empirical understanding about thes ...

P.A.U. Education2015

MOOC Learning in Spontaneous Study Groups: Does Synchronously Watching Videos Make a Difference?

Pierre Dillenbourg, Guillaume Zufferey, Nan Li, Himanshu Verma, Afroditi Skevi

Study groups are common approaches for students to study together at schools. However, little is known about how this approach is suited to MOOC based learning, where learners watch and discuss MOOC lecture videos in a collaborative manner. Watching MOOCs ...

P.A.U. Education2014

Watching MOOCs together: investigating co-located MOOC study groups

Pierre Dillenbourg, Guillaume Zufferey, Nan Li, Himanshu Verma, Afroditi Skevi

Research suggests that massive open online course (MOOC) students prefer to study in groups, and that social facilitation within the study groups may render the learning of difficult concepts a pleasing experience. We report on a longitudinal study that in ...

Routledge Journals, Taylor & Francis Ltd2014

Using a preclinical mouse model of high-grade astrocytoma to optimize p53 restoration therapy

Douglas Hanahan, Ksenya Shchors, Nan Li

National Academy of Sciences2013

Mobile technology for awareness of time progression and its impact on meetings

Pierre Dillenbourg, Patrick Jermann, Nan Li, Himanshu Verma, Flaviu Roman

In this paper we present the motivation, design, development, and initial evaluation of a time awareness technology for meetings. As part of improving meetings effectiveness using technology, we focus on the meeting time management, and the method relies o ...

Ieee2013

Designing Conversation-context Recommendation Display to Support Opportunistic Search in Meetings

Pierre Dillenbourg, Nan Li

In meetings, people sometimes come across information in the environment or in the conversation. This kind of ac- cidentally encountered information may be or not be rele- vant to the main meeting topic, but stirs people’s temporary interest and mediates g ...

ACM2012