An unconditionally stable staggered algorithm for transient finite element analysis of coupled thermoelastic problems

An unconditionally stable second order accurate implicit-implicit staggered procedure for the finite element solution of fully coupled thermoelasticity transient problems is proposed. The procedure is stabilized with a semi-algebraic augmentation technique. A comparative cost analysis reveals the superiority of the proposed computational strategy to other conventional staggered procedures. Numerical examples of one and two-dimensional thermomechanical coupled problems demonstrate the accuracy of the proposed numerical solution algorithm

Computational methods and software systems for dynamics and control of large space structures

Two key areas of crucial importance to the computer-based simulation of large space structures are discussed. The first area involves multibody dynamics (MBD) of flexible space structures, with applications directed to deployment, construction, and maneuvering. The second area deals with advanced software systems, with emphasis on parallel processing. The latest research thrust in the second area involves massively parallel computers

Color: The Mantra for Marketing

In the present scenario, color is emphasized as the most required component of the market and marketers. The customers are attracted using different colors for the products by the manufacturers. The competition prevailing in the market has made the organizations use several strategies using color. Now days the customers go to the various retail stores and buy the products by seeing the packaging as it creates an effective image of the product in their minds. The marketers have to understand the knowledge of the consumers to select the right color for product. The impact of the visual aspects helps the organizations to pass the information to the consumers. The color can affect the consumer's perception and their buying decision. The brands are also recognized because of the fixed colors of their products which provide them brand equity. Every color has been accepted in different way by the various cultures and the emotions attached to it is also different. Color is opted differently by the two genders. In this research paper how the color is used by different cultures, the sentiments associated are studied. A glance of the impact of the color on the consumer behavior is also studied. Without appropriate selection of color the marketers will not be able to attract the customers

Female Participation in the Labour Force of Selected Latin American Countries

Data from 17 Latin American countries concerning female participation in the labour force and selected social , economic and demographic characteristics were examined using the path analysis models. Of the 3 most important independent variables (i. e. those representing female education, fertility and urbanization) the most significant predictor was the proportion of 15 -19-year olds receiving secondary education: this accounted for more than two-thuds of the variation in levels of female participation in the labour force

Coupled structural, thermal, phase-change and electromagnetic analysis for superconductors, volume 1

This research program has dealt with the theoretical development and computer implementation of reliable and efficient methods for the analysis of coupled mechanical problems that involve the interaction of mechanical, thermal, phase-change and electromagnetic subproblems. The focus application has been the modeling of superconductivity and associated quantum-state phase-change phenomena. In support of this objective the work has addressed the following issues: (1) development of variational principles for finite elements; (2) finite element modeling of the electromagnetic problem; (3) coupling of thermal and mechanical effects; and (4) computer implementation and solution of the superconductivity transition problem. The research was carried out over the period September 1988 through March 1993. The main accomplishments have been: (1) the development of the theory of parametrized and gauged variational principles; (2) the application of those principled to the construction of electromagnetic, thermal and mechanical finite elements; and (3) the coupling of electromagnetic finite elements with thermal and superconducting effects; and (4) the first detailed finite element simulations of bulk superconductors, in particular the Meissner effect and the nature of the normal conducting boundary layer. The grant has fully supported the thesis work of one doctoral student (James Schuler, who started on January 1989 and completed on January 1993), and partly supported another thesis (Carmelo Militello, who started graduate work on January 1988 completing on August 1991). Twenty-three publications have acknowledged full or part support from this grant, with 16 having appeared in archival journals and 3 in edited books or proceedings

Coupled structural, thermal, phase-change and electromagnetic analysis for superconductors, volume 2

Two families of parametrized mixed variational principles for linear electromagnetodynamics are constructed. The first family is applicable when the current density distribution is known a priori. Its six independent fields are magnetic intensity and flux density, magnetic potential, electric intensity and flux density and electric potential. Through appropriate specialization of parameters the first principle reduces to more conventional principles proposed in the literature. The second family is appropriate when the current density distribution and a conjugate Lagrange multiplier field are adjoined, giving a total of eight independently varied fields. In this case it is shown that a conventional variational principle exists only in the time-independent (static) case. Several static functionals with reduced number of varied fields are presented. The application of one of these principles to construct finite elements with current prediction capabilities is illustrated with a numerical example

Informational externalities of going public decisions: evidence from industrial sector

Theoretical models predict that going public firms generate positive externalities, creating a spillover effect for other firms to go public. In this paper, we posit that venture backed IPOs convey positive informational externalities for the publicly traded rival firms in the same industry and test three related hypotheses. The hypotheses are: 1) Venture backed IPOs convey positive information about industry and this information is transferred to rival firms; 2) Intra-industry information transfer varies with rivals\u27 characteristics; 3) IPO price revisions generate additional information that affects rivals\u27 valuation. The results show that rivals have positive valuation effects only in response to venture backed IPOs and no significant reaction in response to non-venture backed IPOs. We also find evidence that the effect on rival firms is stronger if they operate in low concentrated industries (i.e. high competition) and have low growth opportunities. The relative size of IPO firm seems to play an important role in the direction and magnitude of industry rivals\u27 valuation effects. Negative information revealed in the form of downward price revisions adversely affect rival firms\u27 valuation