Stevens Institute of Technology

About: Stevens Institute of Technology is a education organization based out in Hoboken, New Jersey, United States. It is known for research contribution in the topics: Computer science & Cognitive radio. The organization has 5440 authors who have published 12684 publications receiving 296875 citations. The organization is also known as: Stevens & Stevens Tech.

Advances in the Transmission Electron Microscopy of Polymers

Abstract: Transmission electron microscopy (TEM) of polymers involves the problem definition and methodologies associated with the microscopy of both inorganic and biological materials but cannot be categorized within either of these fields alone. On the one hand, like other synthetic materials, polymers offer the ability to control properties through synthesis and processing, and TEM is a powerful method with which to provide information within the synthesis–structure–property paradigm of materials science and engineering. The well-established techniques of bright/dark-field imaging, electron diffraction, high-resolution imaging, and analytical microscopies are thus all used to study polymers. On the other hand, the electron–specimen interactions are more like those in biological systems. Synthetic polymers and biological materials consist largely of light elements whose elastic interactions with energetic electrons are relatively weak. Generating image contrast can thus be a challenge in polymer TEM. The inelasti...

Numerical study of viscous flow in rotating rectangular ducts

Abstract: A numerical study of the laminar flow of an incompressible viscous fluid in rotating ducts of rectangular cross-section is conducted. The full time-dependent nonlinear equations of motion are solved by finite-difference techniques for moderate to relatively rapid rotation rates where both the convective and viscous terms play an important role. At weak to moderate rotation rates, a double-vortex secondary flow appears in the transverse planes of the duct whose structure is relatively independent of the aspect ratio of the duct. For Rossby numbers Ro c 100 this secondary flow is shown to lead to substantial distortions of the axial velocity profiles. For more rapid rotations (Ro c l), the Secondary flow (in a duct with an aspect ratio of two) is shown to split into an asymmetric configuration of four counter-rotating vortices similar to that which appears in curved ducts. It is demonstrated mathematically that this effect could result from a disparity in the symmetry of the convective and Coriolis terms in the equations of motion. If the rotation rates are increased further, the secondary flow restabilizes to a slightly asymmetric double-vortex configuration and the axial velocity wumes a Taylor-Proudman configuration in the interior of the duct. Comparisons with existing experimental results are quite favourable.

Modeling the characteristics of system of systems

Abstract: The term system of systems (SoS) has become a quite common expression with no single accepted definition. Based on analysis [1], five characteristics have been identified from an assortment of SoS descriptions. These characteristics are named autonomy, belonging, connectivity, diversity, and emergence, whose degrees of strength determines the foundation of any SoS. To utilize these characteristics, concrete definitions are presented in context and then applied to the development of a theoretical model. The resulting model forms the basis of a generic SoS instantiated as an agent-based modeling simulation. This simulation demonstrates the appropriateness of the characteristics and can be used to explore further aspects of a SoS. Modeling and experimenting on these characteristics will contribute to the field of systems engineering by providing a means to increase our understanding of SoS.

SE 2014: Curriculum Guidelines for Undergraduate Degree Programs in Software Engineering

Abstract: Revised curriculum guidelines help university faculty create or update undergraduate software engineering programs.