The propagation of electromagnetic waves through media with dispersive dielectric permittivity. It is shown that under resonant conditions the energy velocity is always subluminal. The energy velocity is different from the group velocity and the delay velocity. The momentum conservation equation with the Lorentz force is derived from macroscopic and microscopic analysis. The relations of the forces on the dielectric with momentum and pseudomomentum of the electromagnetic field are clarified.

The propagation of electromagnetic waves through media with dispersive dielectric permittivity. It is shown that under resonant conditions the energy velocity is always subluminal. The energy velocity is different from the group velocity and the delay velocity. The momentum conservation equation with the Lorentz force is derived from macroscopic and microscopic analysis. The relations of the forces on the dielectric with momentum and pseudomomentum of the electromagnetic field are clarified.

In this research we illustrate how particle-particle and particle-substrate interactions affect structure in interfacial colloidal systems. A number of tools are used to quantify characteristics of deposited structures. These results help understand the effects of colloidal system interactions and deposition kinetics on the degree of ordering in interfacial colloidal structures. The first set of experiments involve 2.34 ?m silica colloids interacting with silica substrates in 0mM, 5mM, 10mM, and 100mM NaCl solutions. Only the 100mM NaCl solution resulted in rapid deposition driven by van der Waals attraction, while residual electrostatic repulsion produced levitation at lower ionic strengths. This allowed direct observation of the effects of varying magnitudes of attractive interactions on interfacial colloidal structures. Rapid deposition of positively charged 1?m latex colloids on negatively charged silica substrates driven by Coulombic and van der Waals attraction produced surface structures similar to those obtained with only van der Waals attraction. Experiments on 2.34 ?m silica colloids interacting with silica substrates in 10mM NaCl/pH 5.5 and 10mM NaCl/pH 10 conditions resulted in slower deposition rates. It was also found that slower deposition rates produced more compact structures displaying a higher degree of order. Another set of experiments was aimed at understanding interactions and structures formed in systems of polymerically levitated particles. Total internal reflection microscopy (TIRM) experiments revealed the influence of underlying substrate chemistry on interaction profiles in these systems. Basic experiments were also performed on the effects of varying amounts of specific ions on the dispersion stability in these systems. At conditions producing instability in polymeric systems, a similar degree of order was observed in comparison to experiments involving rapid deposition via salt addition in electrostatically stabilized systems. The results of this research clearly indicate that particle-particle and particle-substrate interactions are critical in determining structure formation by deposition. While the principal focus of this research is to study structures formed in various kinetic regimes, it also provides a basis for future studies aimed at tuning attractive interactions to produce equilibrium colloidal crystals on substrates.

Thèse doctorat : Physique et Chimie de la Matière et des Matériaux : Nancy 1 : 2007. / Titre provenant de l'écran-titre.

Thesis (Master of Business Administration)--Naval Postgraduate School, December 2009. / Thesis Advisor(s): Petross, Diana ; San Miguel, Joseph G. "December 2009." Description based on title screen as viewed on January 28, 2010. Author(s) subject terms: Marine Corps, Body Armor, Family of Ballistic Protection Includes bibliographical references (p. 45-48). Also available in print.

Thesis (M.B.A.)--Naval Postgraduate School, June 2003. / "MBA professional report"--Cover. Thesis advisor(s): Nancy C. Roberts, John E. Mutty. Includes bibliographical references (p. 49-52). Also available online.

In this thesis we examine three aspects of procurement policy in the context of asymmetric information. In Chapter 1, we identify an incentive for the contracted firm to underinvest in the comprehensiveness of its internal accounting system, a result similar to that due to Averch and Johnson (1962). The policy implications of this distortion are analysed using both a theoretical construct and numerical simulation. In Chapter 2, we identify a class of distortions generated by the practice of paying 'progress payments' to contracted firms in a model in which 'real' and 'symbolic' progress are not inextricably linked, and in which the procurement agency observes only the latter. In Chapter 3 we construct a simple dual-sector model in which a paternalist government uses bailouts to sustain faltering firms. The firm, knowing the motivation of its client, has an incentive to exploit that knowledge. This complicates the procurement problem in a manner explored in Chapter 3.

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This thesis centres on Karl Marx’s conceptualization of the forces of production, which I argue has received poor treatment in contemporary Marxist literature and is in need of reconstruction. Narrow and ‘lifeless’ understandings of the concept serve to drag Marx into a modernist ‘march of progress,’ which is at odds with the deep ecological basis of his arguments and hold back current attempts to bring ‘nature back in’ to historical materialism. Conceptualizing forces of production broadly to look at that dimension of human existence through which humanity is purposefully linked to the rest of nature, brings out that ecological content and provides a foundation upon which we can shed light on contemporary environmental crises. More specifically, I argue that this allows us to reframe the classical Marxist notion of a contradiction between the forces and relations of production—by seeing ecological thinking itself (i.e. recognition of the need to maintain and restore the indispensible ‘metabolism between humanity and nature’) and associated action, as an advancement in the productive forces, which is however being subordinated and colonized by the imperatives of capital accumulation. / Graduate

Licentiatavhandling Stockholm : Kungl. Tekniska högskolan, 2006.