Mengxiao Zhu

  • Citations Per Year
Learn More
UNLABELLED Eukaryotic DNA is packaged into a chromatin with the help of four core histones (H2A, H2B, H3, and H4). Diverse histone post-translational modifications (PTMs) are hence involved in the regulation of gene transcription. However, how this regulation does work is still poorly understood and lacks details. Here we used the mass spectrometry-based(More)
Eye tracking is a useful tool to understand students' cognitive process during problem solving. This paper offers a unique perspective by applying techniques from social network analysis to eye movement patterns in mathematics problem solving. We construct and visualize transition networks using eye-tracking data collected from 37 8<sup>th</sup> grade(More)
Advanced communication technologies enable strangers to work together on the same tasks or projects in virtual environments. Understanding the formation of task-oriented groups is an important first step to study the dynamics of team collaboration. In this paper, we investigated group combat activities in Sony&#x02019;s EverQuest II game to identify the(More)
This study investigates the self-assembly mechanisms of ad hoc project teams using a bipartite network perspective. Individuals and projects are modeled as two types of nodes and team membership as relations between them. This approach enables us to investigate factors that impact voluntary team assembly at the individual, dyadic, and team levels(More)
This paper explores a longitudinal approach to combining engagement, performance and social connectivity data from a MOOC using the framework of exponential random graph models (ERGMs). The idea is to model the social network in the discussion forum in a given week not only using performance (assignment scores) and overall engagement (lecture and discussion(More)
In formative assessment, constructed response questions are typically used for scientific argumentation, but students seldom receive timely feedback while answering these questions. The development of natural language processing (NLP) techniques makes it possible for the researchers using an automated scoring engine to provide real-time feedback to(More)
In this study, we examine the student-group discussion processes in a scenario-based assessment of engineering professional skills (EPSs). In the assessment, each group of students was evaluated through a discussion on a scenario related to a modern engineering problem with no clear solution. Using social network analysis techniques, we construct two types(More)
  • 1