The evolution of the interface between two mutually insoluble metallic phases, under the influence of a strong electric field is examined. A slight perturbation of the interface away from a plane y5h(x) leads to a component of the electric field along the interface. This creates a diffusion flux of the individual atoms along the interface which, in turn, leads to an increase in the amplitude of...

We present 1D radiative transfer modelling of the envelopes of a sample of 18 low-mass protostars and pre-stellar cores with the aim of setting up realistic physical models, for use in a chemical description of the sources. The density and temperature profiles of the envelopes are constrained from their radial profiles obtained from SCUBA maps at 450 and 850 µm and from measurements of the sour...

Observations of H2 line emission have revealed higher-than-expected gas temperatures in a number of photodissociation fronts. We discuss the heating and cooling processes in photodissociation regions. Observations of NGC 2023 are compared to a theoretical model in which there is substantial gas at temperatures T = 500− 1000K heated by photoelectric emission and collisional deexcitation of H2. I...

The rapid scaling of integrated circuit requires further shrinkage of lateral device dimension, which correlates with pillar thickness in vertical structure. This paper investigates the effect of pillar thickness variation on vertical double gate MOSFET (VDGM) fabricated using oblique rotating ion implantation (ORI) method. For this purpose, several scenarios of silicon pillar thickness tsi wer...

Ultrafast laser inscription is a standard technique to fabricate embedded waveguides in glasses or crystals. Tightly focused femtosecond laser-pulses induce an increase in refractive index inside the material via non-linear absorption. By moving the sample through the focus virtually arbitrary threedimensional paths can be created. The transfer of this technique to polymers has already delivere...

During the past half century, theorizing about economic growth has forced economists to reconsider and revise the capital concept a number of times. This paper explores the analytical relationship between capital accumulation and economic growth, on the one hand, and the natural world, on the other. Section 1 sketches modern growth theory with an emphasis on whether or not the economy is seen a...

The gravitational collapse of a spherical cloud core is investigated by numerical calculations. The initial conditions of the core lie close to the critical BonnorEbert sphere with a central density of ∼ 10 cm in one model (α = 1.1), while gravity overwhelms pressure in the other (α = 4.0), where α is the internal gravity-to-pressure ratio. The α = 1.1 model shows reasonable agreement with the ...

The accumulation of small particles is analyzed in stationary flows through channels of variable width at small Reynolds number. The combined influence of pressure, viscous drag and thermal fluctuations is described by means of a Fokker-Planck equation for the particle density. It is shown that for extended spherical particles the shape of the fluid domain gives rise to inhomogeneous particle d...

This paper studies the optimal growth of a developing non-renewable natural resource producer. It extracts the resource from its soil, and produces a single consumption good with man-made capital. Moreover, it can sell the extracted resource abroad and use the revenues to buy an imported good, which is a perfect substitute of the domestic consumption good. The domestic technology is convex-conc...

Term Acronym Definition Source Affective Commitment to the IS Profession ACISP* An individual's positive emotional attachment to the profession. Lee et al. 2000; Meyer and Herscovitch 2001 Autonomy AUT Provides individuals with the freedom to decide how to accomplish tasks. Ahuja and Thatcher 2005 Burnout BO A condition in which the stress experienced exceeds an individual's ability to cope wit...