Application of the Equivalent Static Analysis method to the design of a steel frame structure with added viscous dampers

All the structures designed by engineers are vulnerable to natural disasters including floods and earthquakes. The energy released during strong ground motions should be dissipated by structural elements. Before 1990’s, this energy was expected to be dissipated through the beams and columns which at the same time were a part of gravity-load-resisting system. However, the main disadvantage of this idea was that gravity-resisting-frame was not repairable. Hence, during 1990’s, the idea of designing passive energy dissipation systems, including dampers, emerged. At the beginning, main problem was lack of guidelines for passive energy dissipation systems. Although till 2000 many guidelines and procedures where published, yet most of them were based on complicated analysis which was not so convenient for engineers and practitioners. In order to solve this problem recently some alternative design methods are proposed including 1. Lopez Garcia (2001) simple procedure for optimal damper configuration in MDOF structures 2. Christopoulos and Filiatrault (2006) trial and error procedure 3. Silvestri et al. (2010) Five-Step Method. 4. Palermo et al. (2015) Direct Five-Step Method. 5. Palermo et al. (2016) Simplified Equivalent Static Analysis (ESA). In this study, effectiveness and differences between last three alternative methods have been evaluated.

Bifurcation Analysis of Reaction Diffusion Systems on Arbitrary Surfaces

In this article we present a computational framework for isolating spatial patterns arising in the steady states of reaction-diffusion systems. Such systems have been used to model many different phenomena in areas such as developmental and cancer biology, cell motility and material science. Often one is interested in identifying parameters which will lead to a particular pattern. To attempt to answer this, we compute eigenpairs of the Laplacian on a variety of domains and use linear stability analysis to determine parameter values for the system that will lead to spatially inhomogeneous steady states whose patterns correspond to particular eigenfunctions. This method has previously been used on domains and surfaces where the eigenvalues and eigenfunctions are found analytically in closed form. Our contribution to this methodology is that we numerically compute eigenpairs on arbitrary domains and surfaces. Here we present various examples and demonstrate that mode isolation is straightforward especially for low eigenvalues. Additionally we see that if two or more eigenvalues are in a permissible range then the inhomogeneous steady state can be a linear combination of the respective eigenfunctions. Finally we show an example which suggests that pattern formation is robust on similar surfaces in cases that the surface either has or does not have a boundary.

Report to the Secretary of State, with decisions showing the reasons for the allowance or disallowance of the claims /

Mode of access: Internet.

Report of the Secretary of State on the claim of Patterson and Murguiendo with a further argument of the claimants.

Mode of access: Internet.

Second International Conference of American States : Message from the President of the United States, transmitting a communication from the Secretary of State, submitting the report, with accompanying papers, of the delegates of the United States to the Second International Conference of American States, held at the City of Mexico from October 22, 1901, to January 22, 1902.

Mode of access: Internet.

Fourth International conference of American states. Message from the President of the United States transmitting a letter from the secretary of state inclosing a report, with accompanying papers, relative to the fourth International conference of American states, held at Buenos Aires from July 12 to August 30, 1910 ...

Henry White, chairman of the delegation.

Report of the Mission on Japanese combines : a report to the Department of State and the War department.

Pt. 1. Analytical and technical data.

Beryllium sampling methods: Comparison of two personal sample collection methods with the AEC sample collection method as used for one year in a beryllium production facility. /

Item 499-F-2

Biennial report of the Board of State Commissioners of Public Charities of the State of Illinois.

Vol. for 1908/1909 has title: Fractional biennial report of the Board of State Commissioners of Public Charities of the State of Illinois.

The Directory of state fire service training systems.

Cover title.

Materials for the study of the Soviet system; State and party constitutions, laws, decrees, decisions, and official statements of the leaders, in translation.

Bibliography: p. 485-492.

High daily rate trickling filter performance : under the direction of the Board of State Health Commissioners, Upper Mississippi River Basin Sanitaton Agreement /

Includes bibliographical references.

The Northern Illinois State Normal School quarterly.

Some issues have also distinctive titles.

The Jalayirids : Dynastic State Formation in the Mongol Middle East /

This book examines the rise and collapse of Mongol rule in Iran and Iraq, and its revival by a family of sultans who claimed to be the rightful heirs to the Mongol khans. The Jalayirids offers a glimpse at a long overlooked but critical period in the history of the Middle East in the late medieval period. This title was made Open Access by libraries from around the world through Knowledge Unlatched.