Browsing Faculty of Arts and Sciences by Title

Now showing items 8358-8377 of 24540

    • Foraging in a Complex World: From Individual Flight Performance to Collective Behavior in Bumblebees (Bombus Impatiens) 

      Crall, James D. (2017-01-27)
      Foraging is a crucial and remarkably complex behavior that is key to survival. For social insects such as bumblebees, successful foraging depends on a combination of individual traits (e.g. physiological and biomechanical ...

    • Foraging strategies and diet composition of Hadza children 

      Crittenden, Alyssa N.; Conklin-Brittain, Nancy L.; Marlowe, Frank W.; Schoeninger, Margaret J.; Wrangham, Richard (John Wiley & Sons, 2009)
      Among the Hazda hunter-gatherers of Tanzania, children are active foragers and collect various types of wild plant foods and hunt small sized prey animals. The collection effort of Hazda children is reported to have a ...

    • Forbearance as Redistribution: Enforcement Politics in Urban Latin America 

      Holland, Alisha Caroline (2014-06-06)
      Why do governments tolerate the violation of their own laws and regulations, and when do they enforce them? Conventional wisdom is that state weakness erodes enforcement, particularly in the developing world. In contrast, ...

    • Force and stroke of a hydrogel actuator 

      Illeperuma, Widusha Ruwangi Kaushalya; Sun, Jeong-Yun; Suo, Zhigang; Vlassak, Joost J. (Royal Society of Chemistry (RSC), 2013)
      Hydrogels that undergo a volume phase transition in response to an external stimulus are of great interest because of their possible use as actuator materials. The performance of an actuator material is normally characterized ...

    • Force and Velocity of Mycoplasma mobile Gliding 

      Miyata, Makoto; Ryu, William S.; Berg, Howard C. (American Society for Microbiology, 2002)
      The effects of temperature and force on the gliding speed of Mycoplasma mobile were examined. Gliding speed increased linearly as a function of temperature from 0.46 mum/s at 11.5degreesC to 4.0 mum/s at 36.5degreesC. A ...

    • Force control of flexible catheter robots for beating heart surgery 

      Kesner, Samuel Benjamin; Howe, Robert D. (Institute of Electrical and Electronics Engineers, 2011)
      Recent developments in cardiac catheter technology promise to allow physicians to perform most cardiac interventions without stopping the heart or opening the chest. However, current cardiac devices, including newly developed ...

    • Force fluctuations and polymerization dynamics of intracellular microtubules 

      Brangwynne, Clifford P.; MacKintosh, F. C.; Weitz, David A. (National Academy of Sciences, 2007)
      Microtubules are highly dynamic biopolymer filaments involved in a wide variety of biological processes including cell division, migration, and intracellular transport. Microtubules are very rigid and form a stiff structural ...

    • The Force of Union: Affect and Ascent in the Theology of Bonaventure 

      Davis, Robert (2012-08-08)
      The image of love as a burning flame is so widespread in the history of Christian literature as to appear inevitable. But as this dissertation explores, the association of amor with fire played a precise and wide-ranging ...

    • Force Sensitive Insoles for Rowing 

      Carmack, Mary Margaret (2016-06-21)
      The Force Sensitive Insoles for Rowing measure plantar force throughout the rowing stroke. The aim of the project is to give rowers a tool to help them understand how they apply force to the boat with their feet. When ...

    • Force Sensitivity of the Von Willebrand Factor A2 Domain 

      Xu, Amy Jia (2012-11-13)
      Von Willebrand factor (VWF) is a multimeric glycoprotein that critically supports platelet aggregation in hemostasis. Disordered VWF function causes both thrombotic and bleeding disorders, and genetic defects in VWF are ...

    • Force tracking with feed-forward motion estimation for beating heart surgery 

      Yuen, Shelten G.; Perrin, Douglas Paul; Vasilyev, Nikolay; Del Nido, Pedro J.; Howe, Robert D. (Institute of Electrical & Electronics Engineers (IEEE), 2010)
      The manipulation of fast moving, delicate tissues in beating heart procedures presents a considerable challenge to the surgeon. A robotic force tracking system can assist the surgeon by applying precise contact forces to ...

    • Force-field functor theory: classical force-fields which reproduce equilibrium quantum distributions 

      Babbush, Ryan; Parkhill, John; Aspuru-Guzik, Alán (Frontiers Media S.A., 2013)
      Feynman and Hibbs were the first to variationally determine an effective potential whose associated classical canonical ensemble approximates the exact quantum partition function. We examine the existence of a map between ...

    • Force-free electrodynamics around extreme Kerr black holes 

      Lupsasca, Alexandru Victor; Rodriguez, Maria; Strominger, Andrew E. (Springer Science + Business Media, 2014)
      Plasma-filled magnetospheres can extract energy from a spinning black hole and provide the power source for a variety of observed astrophysical phenomena. These magnetospheres are described by the highly nonlinear equations ...

    • Forced Axial Flow Between Rotating Concentric Cylinders 

      Barcilon, Victor; Berg, Howard Curtis (Cambridge University Press (CUP), 1971)
      Forced axial flow in an annular gap of a cylindrical rotor is investigated analytically and experimentally. At small rotation rates and narrow gap widths, the axial flow is a simple Poiseuille flow over most of the rotor. ...

    • Forced Migration and Neighborhood Formation: How Communities of Internally Displaced Persons Find Residential Stability in an Unstable World 

      Atuesta Ortiz, Maria (2021-07-12)
      How do communities find residential stability in an unstable world? This question—central to the field of urban studies—is even more urgent in relation to groups who have experienced turmoil and displacement in their ...

    • Forced Rayleigh Scattering from Lipid-Water Smectic Phases 

      Chan, Winston; Pershan, Peter S. (American Physical Society, 1977)
      The hydrodynamic relaxation rate for water inhomogeneities in aligned lipid-water smectics is measured for the first time using an improved version of the "forced Rayleigh" technique. Variation of the relaxation rate with ...

    • Forced Sales and House Prices 

      Campbell, John Y.; Giglio, Stefano; Pathak, Parag (American Economic Association, 2011)
      This paper uses data on all house transactions in Massachusetts over the last 20 years to show that houses sold after foreclosure, or close in time to the death or bankruptcy of a seller, are sold at lower prices than other ...

    • Forced Tearing of Ductile and Brittle Thin Sheets 

      Tallinen, T.; Mahadevan, L. (American Physical Society, 2011)
      Tearing a thin sheet by forcing a rigid object through it leads to complex crack morphologies; a single oscillatory crack arises when a tool is driven laterally through a brittle sheet, while two diverging cracks and a ...

    • The Forces from Coupled Surface Plasmon Polaritons in Planar Waveguides 

      Woolf, David Nathaniel; Loncar, Marko; Capasso, Federico (Optical Society of America, 2009)

    • Forecasting and Backcasting: Predicting the Impact of Events on the Future 

      Ebert, Jane E. J.; Gilbert, Daniel Todd; Wilson, Timothy D. (University of Chicago Press, 2009)
      In many choices they make—-for example, choosing between a movie and a play or deciding whether to attend a sports game shortly before a birthday party—-consumers are guided by how they expect an event will make them feel. ...