A computer program for the analysis of the dynamic bending-torsion coupling in bridges using a mini-computer

The analysis of modes and natural frequencies is of primary interest in the computation of the response of bridges. In this article the transfer matrix method is applied to this problem to provide a computer code to calculate the natural frequencies and modes of bridge-like structures. The Fortran computer code is suitable for running on small computers and results are presented for a railway bridge.

SERBA: a B.I.E. program with linear elements for 2-D elastostatics analysis

The great developments that have occurred during the last few years in the finite element method and its applications has kept hidden other options for computation. The boundary integral element method now appears as a valid alternative and, in certain cases, has significant advantages. This method deals only with the boundary of the domain, while the F.E.M. analyses the whole domain. This has the following advantages: the dimensions of the problem to be studied are reduced by one, consequently simplifying the system of equations and preparation of input data. It is also possible to analyse infinite domains without discretization errors. These simplifications have the drawbacks of having to solve a full and non-symmetric matrix and some difficulties are incurred in the imposition of boundary conditions when complicated variations of the function over the boundary are assumed. In this paper a practical treatment of these problems, in particular boundary conditions imposition, has been carried out using the computer program shown below. Program SERBA solves general elastostatics problems in 2-dimensional continua using the boundary integral equation method. The boundary of the domain is discretized by line or elements over which the functions are assumed to vary linearly. Data (stresses and/or displacements) are introduced in the local co-ordinate system (element co-ordinates). Resulting stresses are obtained in local co-ordinates and displacements in a general system. The program has been written in Fortran ASCII and implemented on a 1108 Univac Computer. For 100 elements the core requirements are about 40 Kwords. Also available is a Fortran IV version (3 segments)implemented on a 21 MX Hewlett-Packard computer,using 15 Kwords.

Development of a Household Pharmaceutical Waste Collection Program for Atlanta, Georgia: An Analysis of Risk Factors and Public Awareness with a Comprehensive Collection Plan

Decades of mixed messages from three federal agencies left many Americans unaware of the hazards associated with the indiscriminate disposal of unwanted or expired medicines. For this Capstone project, a systematic review of state and federal regulations was undertaken to determine how these laws obstruct household pharmaceutical waste collection. In addition, a survey of 654 Atlanta residents was conducted to evaluate unwanted medicine disposal habits, awareness of pharmaceutical compounds being detected in drinking water, surface, and ground waters, and willingness to participate in a household pharmaceutical waste collection program. Survey responses were tabulated to provide overall results and by age group, gender, and race. A household pharmaceutical waste collection plan was developed for the city and included as an appendix.

North Korea's Nuclear Weapon Program : A Critical Analysis

North Korea's regime has one goal, to guarantee its survival. To accomplish that goal it desired the U.S. to maintain a strong presence on the Korean Peninsula to act as an international deterrent against possible foreign occupation of its nation. The DPRK encouraged the U.S. by signing the 1994 Agreed Framework, a formal commitment between the two countries that froze North Korea's nuclear programs in exchange for U.S. energy aid. In 2002 the Bush Administration did not honour its commitment and blamed North Korea for the Agreed Framework's collapse. North Korea retaliated by choosing to become a nuclear nation, an action guaranteed to insure a constant U.S. presence on the Korean Peninsula.

A computer program (VEHSIM) for vehicle fuel economy and performance simulation (automobiles and light trucks). Volume I: description and analysis. Final report.

National Highway Traffic Safety Administration, Office of Research and Development, Washington, D.C.

Agricultural development of Panama; analysis of current problems and recommendations for a program.

Cover title.

Federal energy research : an analysis of fiscal year 1977 program funding levels and alternative budget paths through fiscal year 1986 /

Mode of access: Internet.

A computer program (HEVSIM) for heavy duty vehicle fuel economy and performance simulation. Volume I: description and analysis. Final report.

National Highway Traffic Safety Administration, Office of Research and Development, Washington, D.C.

Asbestos-containing materials in school buildings : bulk sample analysis quality assurance program : bulk sample rounds 16, 17 and 18 /

Mode of access: Internet.

Learning and earning : analysis of HEA Title II-B Graduate Library Fellowship Program recipients, fiscal years 1985-1991 /

"PLLI 97-8014"--P. [4] of cover.

Spill risk analysis program : methodology development and demonstration /

Final report, Apr. 1977.

Life-cycle cost analysis for utility combinations handbook : departmental staff and program participants.

"December 1985."

State inspection program evaluation and data analysis: data base E SPSS frequencies tabulations for brake components and explanatory variables. Volume III. Final report.

National Highway Traffic Safety Administration, Office of Vehicle Safety Research, Washington, D.C.

Investigation of tire-pavement interaction during maneuvering. Volume III. Tire analysis program package, user's manual. Final report.

Federal Highway Administration, Washington, D.C.