Publications by Na Li | EPFL Graph Search

Theoretical explanation of passivation behavior in OFP-Cu and OF-Cu

This research presents a comprehensive comparative analysis of the passivation kinetics of OFP-Cu and OF-Cu in simulated repository electrolyte. The study employs a range of techniques, including potentiodynamic polarization, multi-step potentiostatic pola ...

Pergamon-Elsevier Science Ltd2024

Sample Complexity of Linear Quadratic Gaussian (LQG) Control for Output Feedback Systems

Maryam Kamgarpour, Luca Furieri, Na Li

This paper studies a class of partially observed Linear Quadratic Gaussian (LQG) problems with unknown dynamics. We establish an end-to-end sample complexity bound on learning a robust LQG controller for open-loop stable plants. This is achieved using a ro ...

PMLR2021

Correlated states in twisted double bilayer graphene

Oleg Yazyev, Quansheng Wu, Cheng Shen, Na Li, Jian Tang, Rong Yang

Electron-electron interactions play an important role in graphene and related systems and can induce exotic quantum states, especially in a stacked bilayer with a small twist angle(1-7). For bilayer graphene where the two layers are twisted by the 'magic a ...

NATURE PUBLISHING GROUP2020

On Maintaining Linear Convergence of Distributed Learning and Optimization Under Limited Communication

Na Li, Hossein Shokri Ghadikolaei

In distributed optimization and machine learning, multiple nodes coordinate to solve large problems. To do this, the nodes need to compress important algorithm information to bits so that it can be communicated over a digital channel. The communication tim ...

IEEE-INST ELECTRICAL ELECTRONICS ENGINEERS INC2020

System-level, Input-output and New Parameterizations of Stabilizing Controllers, and Their Numerical Computation

Maryam Kamgarpour, Luca Furieri, Na Li

It is known that the set of internally stabilizing controller

\mathcal{C}_{\text{stab}}

is non-convex, but it admits convex characterizations using certain closed-loop maps: a classical result is the {Youla parameterization}, and two recent notions are t ...

2020

Regulatory T cells engineered with TCR signaling-responsive IL-2 nanogels suppress alloimmunity in sites of antigen encounter

Li Tang, Na Li

Adoptive cell transfer of ex vivo expanded regulatory T cells (T-r(egs)) has shown immense potential in animal models of auto- and alloimmunity. However, the effective translation of such T-reg therapies to the clinic has been slow. Because T-reg homeostas ...

2020

Increasing heart vascularisation after myocardial infarction using brain natriuretic peptide stimulation of endothelial and WT1(+) epicardial cells

Na Li

Brain natriuretic peptide (BNP) treatment increases heart function and decreases heart dilation after myocardial infarction (MI). Here, we investigated whether part of the cardioprotective effect of BNP in infarcted hearts related to improved neovascularis ...

ELIFE SCIENCES PUBLICATIONS LTD2020

Personal Learning with Social Media

Na Li

Social media platforms are increasingly used in recent years to support learning activities, especially for the construction of activity- and learner-centric personal learning environments (PLEs). This thesis investigates the solutions to four essential de ...

EPFL2015

A Responsive Design Approach for Supporting Mobile Access to Virtual and Remote Laboratories

Na Li

Remote and virtual laboratories aim to overcome typical constraints of traditional laboratories and offer access to laboratory experiments without location and time restrictions. Additionally, the continuous growth of mobile devices’ ownership, as well as ...

2014

Enforcing Privacy for Teenagers in Online Inquiry Learning Spaces

Denis Gillet, Adrian Christian Holzer, Sten Govaerts, Na Li

In the Go-Lab European project, we are investigating an online lab portal that enables students to perform personalized scientific experiments with online labs. To protect sensitive student data, such as user activity data and learning preferences, this pa ...

2014

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Theoretical explanation of passivation behavior in OFP-Cu and OF-Cu

Sample Complexity of Linear Quadratic Gaussian (LQG) Control for Output Feedback Systems

Correlated states in twisted double bilayer graphene

On Maintaining Linear Convergence of Distributed Learning and Optimization Under Limited Communication

System-level, Input-output and New Parameterizations of Stabilizing Controllers, and Their Numerical Computation

Regulatory T cells engineered with TCR signaling-responsive IL-2 nanogels suppress alloimmunity in sites of antigen encounter

Increasing heart vascularisation after myocardial infarction using brain natriuretic peptide stimulation of endothelial and WT1(+) epicardial cells

Personal Learning with Social Media

A Responsive Design Approach for Supporting Mobile Access to Virtual and Remote Laboratories

Enforcing Privacy for Teenagers in Online Inquiry Learning Spaces

Theoretical explanation of passivation behavior in OFP-Cu and OF-Cu

Regulatory T cells engineered with TCR signaling-responsive IL-2 nanogels suppress alloimmunity in sites of antigen encounter

Personal Learning with Social Media

On Maintaining Linear Convergence of Distributed Learning and Optimization Under Limited Communication

Increasing heart vascularisation after myocardial infarction using brain natriuretic peptide stimulation of endothelial and WT1(+) epicardial cells

A Responsive Design Approach for Supporting Mobile Access to Virtual and Remote Laboratories

Sample Complexity of Linear Quadratic Gaussian (LQG) Control for Output Feedback Systems

System-level, Input-output and New Parameterizations of Stabilizing Controllers, and Their Numerical Computation

Correlated states in twisted double bilayer graphene

Enforcing Privacy for Teenagers in Online Inquiry Learning Spaces