Browsing Scholarly Works, Grado Department of Industrial and Systems Engineering by Title
Now showing items 1-20 of 96
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Acoustofluidic particle trapping, manipulation, and release using dynamic-mode cantilever sensors
(Royal Society of Chemistry, 2016-11-23)We show here that dynamic-mode cantilever sensors enable acoustofluidic fluid mixing and trapping of suspended particles as well as the rapid manipulation and release of trapped micro-particles via mode switching in liquid. ... -
Age-related strength loss affects non-stepping balance recovery
(Public Library of Science, 2019-01-18)Aging is associated with a higher risk of falls, and an impaired ability to recover balance after a postural perturbation is an important contributing factor. In turn, this impaired recovery ability likely stems from ... -
An Algorithm for Fast Generation of Bivariate Poisson Random Vectors
(INFORMS, 2010)We present the "trivariate reduction extension" (TREx)-an exact algorithm for the fast generation of bivariate Poisson random vectors. Like the normal-to-anything (NORTA) procedure, TREx has two phases: a preprocessing ... -
Applying variance reduction ideas in queuing simulations
(Cambridge University Press, 2001)Variance reduction techniques are often underused in simulation studies. In this article, we indicate how certain ones can be efficiently employed when analyzing queuing models. The first technique considered is that of ... -
Approximate Positively Correlated Distributions and Approximation Algorithms for D-optimal Design
Experimental design is a classical problem in statistics and has also found new applications in machine learning. In the experimental design problem, the aim is to estimate an unknown vector x in m-dimensions from linear ... -
AR DriveSim: An Immersive Driving Simulator for Augmented Reality Head-Up Display Research
(2019-10-23)Optical see-through automotive head-up displays (HUDs) are a form of augmented reality (AR) that is quickly gaining penetration into the consumer market. Despite increasing adoption, demand, and competition among manufacturers ... -
Beyond Finding Change: multitemporal Landsat for forest monitoring and management
(2017-07)Take homes- Tobler’s Law still in effect with time series – spatial autocorrelation in temporal coherence can help in both preprocessing and estimation
- Continual process improvement in extant algorithms ...
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C-NORTA: A Rejection Procedure for Sampling from the Tail of Bivariate NORTA Distributions
(INFORMS, 2012)We propose C-NORTA, an exact algorithm to generate random variates from the tail of a bivariate NORTA random vector. (A NORTA random vector is specified by a pair of marginals and a rank or product-moment correlation, and ... -
Can a Patient's In-Hospital Length of Stay and Mortality Be Explained by Early-Risk Assessments?
(PLOS, 2016-09-15)Objective To assess whether a patient’s in-hospital length of stay (LOS) and mortality can be explained by early objective and/or physicians’ subjective-risk assessments. Data Sources/Study Setting Analysis of a ... -
Capturing multi-stage fuzzy uncertainties in hybrid system dynamics and agent-based models for enhancing policy implementation in health systems research
(PLOS, 2018-04-25)Background In practical research, it was found that most people made health-related decisions not based on numerical data but on perceptions. Examples include the perceptions and their corresponding linguistic values of ... -
The CCP Selector: Scalable Algorithms for Sparse Ridge Regression from Chance-Constrained Programming
Sparse regression and variable selection for large-scale data have been rapidly developed in the past decades. This work focuses on sparse ridge regression, which considers the exact $L_0$ norm to pursue the sparsity. We ... -
Classifying Diverse Physical Activities Using “Smart Garments”
(MDPI, 2019-07-16)Physical activities can have important impacts on human health. For example, a physically active lifestyle, which is one of the most important goals for overall health promotion, can diminish the risk for a range of physical ... -
Classifying Step and Spin Turns Using Wireless Gyroscopes and Implications for Fall Risk Assessments
(MDPI, 2015-05-06)Recent studies have reported a greater prevalence of spin turns, which are more unstable than step turns, in older adults compared to young adults in laboratory settings. Currently, turning strategies can only be identified ... -
A Clustering Refinement Approach for Revealing Urban Spatial Structure from Smart Card Data
(MDPI, 2020-08-13)Facilitated by rapid development of the data-intensive techniques together with communication and sensing technology, we can take advantage of smart card data collected through Automatic Fare Collection (AFC) systems to ... -
Collaborative task performance for learning using a virtual environment
(MIT Press, 1999-08-01)This paper describes a study on the sense of presence and task performance in a virtual environment as affected by copresence (one subject working alone versus two subjects working as partners), level of control (control ... -
A Complementary Column Generation Approach for the Graph Equipartition Problem
(2020-03-23)This paper investigates the problem of partitioning a complete weighted graph into complete subgraphs, each having the same number of vertices, with the objective of minimizing the sum of edge weights of the resulting ... -
A conceptual model of the sense of presence in virtual environments
(MIT Press, 1999-04-01)This paper proposes a model of interaction in virtual environments which we term the immersion, presence, performance (IPP) model. This model is based on previous models of immersion and presence proposed by Barfield and ... -
Consistent individual motor variability traits demonstrated by females performing a long-cycle assembly task under conditions differing in temporal organisation
(2020-05)Research suggests an association between motor variability (MV) during repetitive work and work-related musculoskeletal disorders (MSDs). However, whether MV is a consistent individual trait, even across working conditions ... -
Constructing True Model-Based Requirements in SysML
(MDPI, 2019-03-28)Some authors suggest that transitioning requirements engineering from the traditional statements in natural language with shall clauses to model-based requirements within a Model-Based Systems Engineering (MBSE) environment ... -
Coordination of verification activities with incentives: a two-firm model
(2020-11-12)In systems engineering, verification activities evaluate the extent to which a system under development satisfies its requirements. In large systems engineering projects, multiple firms are involved in the system development, ...
