Andrew Edward Johnson

Andrew Edward Johnson
University of Illinois at Chicago | UIC · Department of Computer Science

Ph.D.

About

235
Publications
42,695
Reads
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4,455
Citations
Citations since 2016
33 Research Items
1475 Citations
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Introduction
Dr. Andrew Johnson is Professor of Computer Science and Director of Research at the Electronic Visualization Laboratory at the University of Illinois at Chicago.

 His research and teaching focus on interaction and collaboration using advanced visualization displays and the application of those displays to enhance discovery and learning.
Additional affiliations
May 1995 - present
University of Illinois at Chicago
January 1995 - May 1995
Wayne State University
Position
  • Part-Time Faculty
Education
September 1990 - May 1994
Wayne State University
Field of study
  • Computer Science
September 1988 - May 1990
Wayne State University
Field of study
  • Computer Science
September 1984 - May 1988
University of Michigan
Field of study
  • Computer Engineering

Publications

Publications (235)
Preprint
Full-text available
Reference resolution, which aims to identify entities being referred to by a speaker, is more complex in real world settings: new referents may be created by processes the agents engage in and/or be salient only because they belong to the shared physical setting. Our focus is on resolving references to visualizations on a large screen display in mu...
Article
Technology have long been a partner of workplace meeting facilitation. The recent outbreak of COVID-19 and the cautionary measures to reduce its spread have made it more prevalent than ever before in the form of online-meetings. In this paper, we recount our experiences during weekly meetings in three modalities: using SAGE2 - a collaborative shari...
Article
Data entry is a ubiquitous task performed in today's offices. Persistent data entry is linked with high workload and fatigue due to poor ergonomic workplace design and poor posture. This study aims to alleviate data entry operators' workload and improve data entry performance by applying wearable augmented reality (AR) technology to data entry task...
Article
An augmented reality (AR) environment includes a set of digital elements with which the users interact while performing certain tasks. Recent AR head-mounted displays allow users to select how these elements are presented. However, few studies have been conducted to examine the effect of presenting augmented content on user performance and workload...
Preprint
An augmented reality (AR) environment includes a set of digital elements with which the users interact while performing certain tasks. Recent AR head-mounted displays allow users to select how these elements are presented. However, few studies have been conducted to examine the effect of the way of presenting augmented content on user performance a...
Chapter
We developed a collaborative virtual environment for architectural planning that facilitates groups of people to work together using three different interfaces. These interfaces enable users to interact with the scene with varying levels of immersion and different interaction modalities. We conducted a user study to gauge the general usability of t...
Conference Paper
Full-text available
The VisSnippets system is designed to facilitate effective collaborative data exploration. VisSnippets leverages SAGE2 middleware that enables users to manage the display of digital media content on large displays, thereby providing collaborators with a high-resolution common workspace. Based in JavaScript, VisSnippets provides users with the flexi...
Article
This paper describes results from an observational, exploratory study of visual data exploration in a large, multi‐view, flexible canvas environment. Participants were provided with a set of data exploration sub‐tasks associated with a local crime dataset and were instructed to pose questions to a remote mediator who would respond by generating and...
Conference Paper
Two major form factors for virtual reality are head-mounted displays and large display environments such as CAVE®and the LCD-based successor CAVE2®. Each of these has distinct advantages and limitations based on how they’re used. This work explores preserving the high resolution and sense of presence of CAVE2 environments in full stereoscopic mode...
Article
This article provides a 25 year-long perspective on Immersive Analytics through the lens of first-in-kind technological advancements introduced at the Electronic Visualization Laboratory, University of Illinois at Chicago, along with the challenges and lessons learned from multiple immersive analytics projects.
Article
Purpose: To determine the acceptability, usefulness, and ease of use for four nursing clinical decision support interface prototypes. Methods: In a simulated hospital environment, 60 registered nurses (48 female; mean age = 33.7 ± 10.8; mean years of experience = 8.1 ± 9.7) participated in a randomized study with four study groups. Measures incl...
Article
Background: Clinical decision support (CDS) tools-with easily understood and actionable information, at the point of care-are needed to help registered nurses (RNs) make evidence-based decisions. Not clear are the optimal formats of CDS tools. Thorough, preclinical testing is desirable to avoid costly errors associated with premature implementatio...
Article
Anticipatory grieving, grief associated with an impending loss, is common for patients facing end of life or for their families. There is little research on the outcomes of interventions for anticipatory grieving among hospitalized patients. A descriptive, comparative analysis of an existing valid and reliable data set that was obtained through rou...
Conference Paper
Efficient RDF, graph based queries are becoming more pertinent based on the increased interest in data analytics and its intersection with large, unstructured but connected data. Many commercial systems have adopted distributed RDF graph systems in order to handle increasing dataset sizes and complex queries. This paper introduces a distribute grap...
Conference Paper
Mixed presence collaboration involves remote collaboration between multiple collocated groups. This paper presents the design and results of a user study that focused on mixed presence collaboration using large-scale tiled display walls. The research was conducted in order to compare data synchronization schemes for multi-user visualization applica...
Poster
Full-text available
Updated and continued analysis of SIMPLE project field data.
Conference Paper
Real world group-to-group collaboration often occurs between partially distributed interdisciplinary teams, with each discipline working in a unique environment suited for its needs. Groupware must be flexible so that it can be incorporated into a variety of workspaces in order to successfully facilitate this type of mixed presence collaboration. W...
Conference Paper
Classic visual analysis relies on a single medium for displaying and interacting with data. Large-scale tiled display walls, virtual reality using head-mounted displays or CAVE systems, and collaborative touch screens have all been utilized for data exploration and analysis. We present our initial findings of combining numerous display environments...
Conference Paper
Full-text available
The goal of our research is to support full-fledged dialogue between a user and a system that transforms the user queries into visualizations. So far, we have collected a corpus where users explore data via vi-sualizations; we have annotated the corpus for user intentions; and we have developed the core NL-to-visualization pipeline.
Article
Purpose: To develop methods for rapid and simultaneous design, testing, and management of multiple clinical decision support (CDS) features to aid nurse decision-making. Methods: We used quota sampling, think-aloud and cognitive interviews, and deductive and inductive coding of synchronized audio video data and archival libraries. Findings: Ou...
Poster
Full-text available
Earth’s thick ice shelves provide an important analog for the physicochemical, and potentially microbial, characteristics of icy worlds such as Europa.
Article
Empirical evaluation methods for visualizations have traditionally focused on assessing the outcome of the visual analytic process as opposed to characterizing how that process unfolds. There are only a handful of methods that can be used to systematically study how people use visualizations, making it difficult for researchers to capture and chara...
Conference Paper
Full-text available
We describe the lessons learned from three recent Immersive Analytics projects which take place at the Electronic Visualization Lab. These successful collaborative projects use the CAVE2 immersive hybrid environment. All three projects visualize multifaceted scientific data and benefit from interdisciplinary collaborations with experts across appli...
Article
Full-text available
Background: While there is literature suggesting that the palatal rugae could be used for human identification, most of these studies use two-dimensional (2D) approach. Aim: The aims of this study were to evaluate palatal ruga patterns using three-dimensional (3D) digital models; compare the most clinically relevant digital model conversion techn...
Conference Paper
Full-text available
Accessibility is an important element in urban transportation planning. Accessibility measures combine mobility and land use measures to provide a more complete picture of the transportation-land use nexus than either of these measures alone. By providing insights into the varying degrees to which different areas of a region are connected to opport...
Article
Our long-term goal was to ensure nurse clinical decision support works as intended before full deployment in clinical practice. As part of a broader effort, this pilot project explored factors influencing acceptance/nonacceptance of eight clinical decision support suggestions displayed in an electronic health record-based nursing plan of care softw...
Article
Achievable networking performance of applications in a supercomputer depends on the exact combination of the communication patterns of the applications and the routing algorithms used by the supercomputer. In order to achieve the highest networking performance for the applications the routing algorithms need to be designed optimally for those commu...
Conference Paper
The study presented in this paper focuses on a dimensional theory to augment agent nonverbal behavior including emotional facial expression and head gestures to evaluate subtle differences in fine-grained conditions in the context of emotional storytelling. The result of a user study in which participants rated perceived naturalness for seven diffe...
Article
Full-text available
The volume of complete bacterial genome sequence data available to comparative genomics researchers is rapidly increasing. However, visualizations in comparative genomics--which aim to enable analysis tasks across collections of genomes--suffer from visual scalability issues. While large, multi-tiled and high-resolution displays have the potential...
Conference Paper
Full-text available
Large high-resolution displays are becoming increasingly common in research settings, providing data scientists with visual interfaces for the analysis of large datasets. Numerous studies have demonstrated unique perceptual and cognitive benefits afforded by these displays in visual analytics and information visualization tasks. However, the effect...
Article
Full-text available
The purpose of this concurrent mixed-methods study was to 1) examine the factors pediatric intensive care unit nurses consider when assessing and intervening for children who report severe pain and to 2) determine the effect of child behavior and diagnosis on the nurses' pain ratings and intervention choices for written and virtual human vignettes....
Article
Improvements in genome sequencing technology over the past decade have driven down sequencing costs faster than Moore's Law producing a genome sequencing boom [9]. Accelerated rates of complete genome sequence production are particularly evident in bacterial genomics, where small genome sizes enable rapid and inexpensive sequencing. These large vol...
Article
The investigation of underwater structures and natural features through Autonomous Underwater Vehicles (AUVs) is an expanding field with applications in archaeology, engineering, environmental sciences and astrobiology. Processing and analyzing the raw sonar data generated by automated surveys is challenging due to the presence of complex error sou...
Article
As virtual experiences are increasingly used in health care training and research, it is important that adequate processes are applied for developing valid scenarios. We describe the development and validation of virtual human (VH) vignettes, computer-generated scenarios with animated patients and clinical information, for a mixed-methods study reg...
Conference Paper
Full-text available
Visualization practitioners have traditionally focused on evaluating the outcome of the visual analytic process, as opposed to studying how that process unfolds. Since user strategy would likely influence the outcome of visual analysis and the nature of insights acquired, it is important to understand how the analytic behavior of users is shaped by...
Conference Paper
Full-text available
Current web-based collaboration systems, such as Google Hangouts, WebEx, and Skype, primarily enable single users to work with remote collaborators through video conferencing and desktop mirroring. The original SAGE software, developed in 2004 and adopted at over one hundred international sites, was designed to enable groups to work in front of lar...
Article
The popularity of large-scale, high-resolution display walls, as visualization endpoints in eScience infrastructure, is rapidly growing. These displays can be connected to distributed computing resources over high-speed network, providing effective means for researchers to visualize, interact with, and understand large volumes of datasets. Typicall...
Article
Full-text available
The scale and complexity of today's datasets frequently overwhelms conventional visualization interfaces, which could negatively impact the quality of the visual analytic activity. In this paper, we investigate the use of Large, High-Resolution displays in exploratory visual analysis scenarios. We argue that the ability to see and interact with mor...
Article
Clinical Decision Support Systems (CDSS) are tools that assist healthcare personnel in the decision-making process for patient care. Although CDSSs have been successfully deployed in the clinical setting to assist physicians, few CDSS have been targeted at professional nurses, the largest group of health providers. We present our experience in desi...
Conference Paper
Full-text available
Recent research studies have shown the serious health risks associated with prolonged sitting. Standing up and walking on a regular basis has been proved to improve an office worker's well-being. Small behavioral changes like the aforementioned are the basis of preventive medicine and even though they appear easy to follow, in practice are difficul...
Conference Paper
This video describes the CAVE2 Hybrid Reality Environment developed by the Electronic Visualization Laboratory (EVL) at the University of Illinois at Chicago (UIC). CAVE2 is a near-seamless flat-panel-based, surround-screen immersive system that can simultaneously display both 2D and 3D information, providing more flexibility for mixed media applic...
Conference Paper
Full-text available
In the domain of large-scale visualization instruments, hybrid reality environments (HREs) are a recent innovation that combines the best-in-class capabilities of immersive environments, with the best-in-class capabilities of ultra-high-resolution display walls. HREs create a seamless 2D/3D environment that supports both information-rich analysis a...
Conference Paper
Full-text available
Molecular Dynamics is becoming a principle methodology in the study of nanoscale systems, paving the way for innovations in battery design and alternative fuel applications. With the increasing availability of computational power and advances in modeling, atomistic simulations are rapidly growing in scale and complexity. Despite the plethora of mol...
Conference Paper
Pediatric intensive care (PICU) nurses play a crucial role in managing children’s pain. While virtual patient (VP) technology has shown significant benefits in assisting with the practice of healthcare, there has been little research effort in this particular setting. This paper presents a pilot evaluation study to determine the validity of VP vign...
Conference Paper
In this paper we present our experience in designing and applying an evaluation protocol for assessing usability of a clinical decision support (CDS) system. The protocol is based on component-based usability testing, cognitive interviewing, and a rigorous coding scheme cross-referenced to a component library. We applied this protocol to evaluate a...
Article
Full-text available
Constructing integrative visualizations that simultaneously cater to a variety of data types is challenging. Hybrid-reality environments blur the line between virtual environments and tiled display walls. They incorporate high-resolution, stereoscopic displays, which can be used to juxtapose large, heterogeneous datasets while providing a range of...
Article
Full-text available
This article describes research to build an embodied conversational agent (ECA) as an interface to a question-and-answer (Q/A) system about a National Science Foundation (NSF) program. We call this ECA the LifeLike Avatar, and it can interact with its users in spoken natural language to answer general as well as specific questions about specific to...
Article
Full-text available
Hybrid Reality Environments represent a new kind of visualization spaces that blur the line between virtual environments and high resolution tiled display walls. This paper outlines the design and implementation of the CAVE2TM Hybrid Reality Environment. CAVE2 is the world's first near-seamless flat-panel-based, surround-screen immersive system. Un...
Article
Purpose: To reveal hidden patterns and knowledge present in nursing care information documented with standardized nursing terminologies on end-of-life (EOL) hospitalized patients. Method: 596 episodes of care that included pain as a problem on a patient's care plan were examined using statistical and data mining tools. The data were extracted fr...
Article
Full-text available