Making infrastructure reform in Latin America work for the poor

Includes bibliography

Trade and infrastructure in the Andean Community

Includes bibliography

Latin America: problems and challenges of infrastructure financing

Includes bibliography

Infrastructure and economic growth in Peru

Includes bibliography

Metodología para la evaluación de efectos de proyectos de infraestructura = Impact evaluation methodology for infrastructure projects

Ofrece una metodologia para evaluar el efecto de los proyectos de infraestructura (abastecimiento de agua, saneamiento, eliminacion de desechos solidos, carreteras y senderos y energia) sobre las caracteristicas socioeconomicas de las comunidades involucradas.

The dynamic behaviour of a buried water pipe and its effect on leak location using acoustic methods

Leakage in buried pipes is one of the main concerns for water companies due to the scarcity of potable water sources. Older metallic pipelines have been replaced by plastic pipes in such systems, which makes it more difficult to locate leaks using acoustics and vibration. This is mainly because of the high attenuation of leak signals caused by the damping in the pipe wall. To investigate acoustic methods in leak location in controlled conditions, a bespoke test rig was constructed in the UK. In this paper, data from this test-rig is used to discuss some issues that arise when using two contemporary correlators. Of particular interest, is the way in which a resonance in the system can have a profound effect on the estimate of the position of the leak depending on the way in which the leak noise signals are processed. © (2013) Trans Tech Publications.

Wavespeed measurement in buried water distribution pipes and its significance in leak location

To determine the location of leaks in buried water pipes, acoustic methods are often used. These have proven to be very effective in metallic pipes but have been problematic in modern plastic pipes. In this paper the reason why this is so is discussed together with some measurements that were made on a bespoke test rig built by South Staffs Water plc. A particular problem is the estimate of the wavespeed. Tables are frequently used for this purpose, but these are often inaccurate and this means that a leak cannot be located accurately. An in-situ measure of the wavespeed is thus preferable. In this paper it is shown that there are significant issues in obtaining an accurate estimate of the wavespeed when a leak is present in the system. A method is proposed that overcomes some of these problems, which is discussed and is demonstrated using some data from the bespoke test-rig. © (2013) Trans Tech Publications.

The statistical infrastructure of Caribbean countries

Includes bibliography

Report on science and technology infrastructure and policy in selected member and associate member countries of the CDCC

Includes bibliography

Report on the Latin American information infrastructure for development, with special reference to the Caribbean

Includes bibliography

Condicionantes y consecuencias de los asentamientos precarios urbanos como marco para la formulación de políticas de vivienda, infraestructura y servicios para los grupos de menores ingresos = Determinants and consequences of makeshift settlements in urban areas as a framework for the formulation of policies relating to housing, infrastructure and services for low-income groups

Incluye Bibliografía