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Browsing MIT Open Access Articles by Title

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  • Modeling Adaptation Effects in fMRI Analysis 
    Ou, Wanmei; Raij, Tommi; Lin, Fa-Hsuan; Golland, Polina; Hämäläinen, Matti (Springer-Verlag Berlin Heidelberg, 2009)
    The standard general linear model (GLM) for rapid event-related fMRI design protocols typically ignores reduction in hemodynamic responses in successive stimuli in a train due to incomplete recovery from the preceding ...
  • Modeling Airline Frequency Competition for Airport Congestion Mitigation 
    Vaze, Vikrant; Barnhart, Cynthia (Institute for Operations Research and the Management Sciences (INFORMS), 2012-05)
    Demand often exceeds capacity at congested airports. Airline frequency competition is partially responsible for the growing demand for airport resources. We propose a game-theoretic model for airline frequency competition ...
  • A modeling and control framework for operating large-scale electric power systems under present and newly evolving competitive industry structures 
    Ilic, Marija; Liu, Xiaojun Shell (Hindawi Publishing Corporation, 1995)
    This paper introduces a systematic, structure-based modeling framework for analysis and control of electric power systems for processes evolving over the mid-term and long-term time horizons. Much simpler models than the ...
  • Modeling and Design of Multi-stage Separation Systems 
    Wolf, Malima I.; Colledani, Marcello; Gershwin, Stanley B.; Gutowski, Timothy G. (Institute of Electrical and Electronics Engineers, 2010-07)
    Interest in recycling has surged in recent years due to shifting material costs, environmental concerns over material production and disposal, and laws in many countries designed to improve material recycling rates. In ...
  • Modeling and detection techniques for Counter-Terror Social Network Analysis and Intent Recognition 
    Weinstein, Clifford J.; Campbell, William M.; Delaney, Brian S.; O'Leary, Gerald (Institute of Electrical and Electronics Engineers (IEEE), 2009-04)
    In this paper, we describe our approach and initial results on modeling, detection, and tracking of terrorist groups and their intents based on multimedia data. While research on automated information extraction from ...
  • Modeling and Estimating Current Harmonics of Variable Electronic Loads 
    Wichakool, Warit; Avestruz, Al-Thaddeus; Cox, Robert W.; Leeb, Steven B. (Institute of Electrical and Electronics Engineers (IEEE), 2009-08)
    This paper develops a model for relating input current harmonic content to real power consumption for variable electronic loads, specifically for loads' actively controlled inverters energized by an uncontrolled rectification ...
  • Modeling and estimating persistent motion with geometric flows 
    Lin, Dahua; Grimson, Eric; Fisher, John W., III (Institute of Electrical and Electronics Engineers (IEEE), 2010-08)
    We propose a principled framework to model persistent motion in dynamic scenes. In contrast to previous efforts on object tracking and optical flow estimation that focus on local motion, we primarily aim at inferring a ...
  • A modeling and exploration framework for interconnect network design in the nanometer Era 
    Stojanovic, Vladimir Marko; Chen, Fred Fu-Chin; Joshi, Ajay J. (Institute of Electrical and Electronics Engineers, 2009-06)
    As we approach serious scaling roadblocks in the next few process nodes, it is imperative to identify new emerging technologies that can complement or supplant CMOS in the future. We present an integrated cyclic approach ...
  • Modeling and Hazard Analysis Using Stpa 
    Ishimatsu, Takuto; Leveson, Nancy G.; Thomas, John; Katahira, Masa; Miyamoto, Yuko; Nakao, Haruka (International Association for the Advancement of Space Safety (IAASS), 2010-09)
    A joint research project between MIT and JAXA/JAMSS is investigating the application of a new hazard analysis to the system and software in the HTV. Traditional hazard analysis focuses on component failures but software ...
  • Modeling and implementation of solder-activated joints for single-actuator, centimeter-scale robotic mechanisms 
    Telleria, Maria J.; Hansen, Malik; Campbell, Don; Servi, Amelia T.; Culpepper, Martin Luther (Institute of Electrical and Electronics Engineers (IEEE), 2010-05)
    We explain when, and why, solder-based phase change materials (PCMs) are best-suited as a means to modify a robotic mechanism's kinematic and elastomechanic behavior. The preceding refers to mechanisms that possess joints ...
  • Modeling and Optimization of Superhydrophobic Condensation 
    Miljkovic, Nenad; Enright, Ryan; Wang, Evelyn N. (ASME International, 2013-09)
    Superhydrophobic micro/nanostructured surfaces for dropwise condensation have recently received significant attention due to their potential to enhance heat transfer performance by shedding water droplets via coalescence-induced ...
  • Modeling and Simulation of Lithium-Ion Batteries from a Systems Engineering Perspective 
    Braatz, Richard D.; Ramadesigan, Venkatasailanathan; Northtrop, Paul W. C.; De, Sumitava; Santhanagopalan, Shriram; Subramanian, Venkat R. (The Electrochemical Society, 2012-01)
    The lithium-ion battery is an ideal candidate for a wide variety of applications due to its high energy/power density and operating voltage. Some limitations of existing lithium-ion battery technology include underutilization, ...
  • Modeling a Paradigm Shift: From Producer Innovation to User and Open Collaborative Innovation 
    Baldwin, Carliss; von Hippel, Eric A. (Institute for Operations Research and the Management Sciences (INFORMS), 2011-03)
    In this paper, we assess the economic viability of innovation by producers relative to two increasingly important alternative models: innovations by single-user individuals or firms and open collaborative innovation. We ...
  • Modeling applied to problem solving 
    Pawl, Andrew; Barrantes, Analia; Pritchard, David E. (American Institute of Physics (AIP), 2009-07)
    We describe a modeling approach to help students learn expert problem solving. Models are used to present and hierarchically organize the syllabus content and apply it to problem solving, but students do not develop and ...
  • Modeling attacks on physical unclonable functions 
    Ulrich, Ruhrmair; Sehnke, Frank; Solter, Jan; Dor, Gideon; Devadas, Srinivas; Schmidhuber, Jurgen (Association for Computing Machinery (ACM), 2010-10)
    We show in this paper how several proposed Physical Unclonable Functions (PUFs) can be broken by numerical modeling attacks. Given a set of challenge-response pairs (CRPs) of a PUF, our attacks construct a computer algorithm ...
  • Modeling Customer Lifetimes with Multiple Causes of Churn 
    Braun, Michael; Schweidel, David A. (Institute for Operations Research and the Management Sciences (INFORMS), 2011-08)
    Customer retention and customer churn are key metrics of interest to marketers, but little attention has been placed on linking the different reasons for which customers churn to their value to a contractual service provider. ...
  • Modeling Disease Severity in Multiple Sclerosis Using Electronic Health Records 
    Xia, Zongqi; Secor, Elizabeth; Chibnik, Lori B.; Bove, Riley M.; Cheng, Suchun; Chitnis, Tanuja; Cagan, Andrew; Gainer, Vivian S.; Chen, Pei J.; Liao, Katherine P.; Shaw, Stanley Y.; Ananthakrishnan, Ashwin N.; Szolovits, Peter; Weiner, Howard L.; Karlson, Elizabeth W.; Murphy, Shawn N.; Savova, Guergana K.; Cai, Tianxi; Churchill, Susanne E.; Plenge, Robert M.; Kohane, Isaac S.; De Jager, Philip L. (Public Library of Science, 2013-11)
    Objective: To optimally leverage the scalability and unique features of the electronic health records (EHR) for research that would ultimately improve patient care, we need to accurately identify patients and extract ...
  • Modeling Extreme Mass Ratio Inspirals within the Effective-One-Body Approach 
    Yunes, Nicolas; Buonanno, Alessandra; Hughes, Scott A.; Miller, M. Coleman; Pan, Yi (American Physical Society, 2010-03)
    We present the first models of extreme-mass-ratio inspirals within the effective-one-body (EOB) formalism, focusing on quasicircular orbits into nonrotating black holes. We show that the phase difference and (Newtonian-normalized) ...
  • Modeling formalisms in Systems Biology 
    Machado, Daniel; Costa, Rafael S.; Rocha, Miguel; Ferreira, Eugenio C.; Tidor, Bruce; Rocha, Isabel (Springer, 2011-12)
    Systems Biology has taken advantage of computational tools and high-throughput experimental data to model several biological processes. These include signaling, gene regulatory, and metabolic networks. However, most of ...
  • Modeling frequency response of 65 nm CMOS RF power devices 
    Gogineni, Usha; del Alamo, Jesus A.; Putnam, Christopher; Greenberg, David (2010-11)
    This paper presents a model for the frequency response of 65 nm RF power CMOS devices as a function of device width. We find that the cut-off frequency (f[subscript T]) and maximum oscillation frequency (f[subscript max]) ...
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