Looking for Trickledown Under the Peace Bridge: A Critique of the Public Bridge Authority\u27s Economic Impact Claims

The Public Bridge Authority’s economic impact analysis, presented in its environmental impact statement for the Peace Bridge Expansion Project, offers a grossly exaggerated impression of the project’s benefits. The Buffalo and Fort Erie Public Bridge Authority has proposed a significant expansion to the operations of the international crossing between Buffalo and Fort Erie known as the Peace Bridge. The plans presented to the public in 2007 would radically alter a five block area in Buffalo adjacent to the existing bridge plaza and further destroy the views and amenities in the historic, Olmsted-designed Front Park

Reconstruction of the existing bridge structure

Diplomová práce se zabývá zesílením a rozšířením trámového mostu (spojitý most o třech polích) přes řeku Jihlavu v Ivančicích a jeho zesílením na zatěžovací třídu A. To je provedeno pomocí dodatečného předpětí vnějšími kabely a spřažené monolitické desky. Zesílení je ověřeno výpočtem zatížitelnosti.Master's thesis deals with the reinforcement and expansion of girder bridge (continuous bridge with three spans) across the river Jihlava in Ivančice and reinforcement on the load class A. This is done by using an additional external prestressing cables and composite monolithic slab. Amplification is verified by calculation of load capacity.

Coaxial capacitor used to determine fluid density

Sensing device measures directly the density of compressible fluid existing simultaneously in both liquid and gaseous phases. The device is comprised of a capacitor connected as one leg of a bridge circuit, a power source, and an indicator calibrated to indicate density as a direct measurement

Interactive Water Quality Data Visualization: Case Study Longhorn Stream Team

Water quality monitoring can provide a real-time indicator as to the health and quality of a precious natural resource yet it is difficult to effectively communicate data and inspire action beyond the scientific arena. An interactive web application was developed using R Shiny to bridge this knowledge gap, visualizing existing data points collected by citizen scientists of the Longhorn Stream Team.Geography and the Environmen

Bayesian assessment of an existing bridge - a case study

This article presents a case study involving the assessment of an existing bridge, starting with simple methods and ending with a probabilistic analysis, the latter emphasising Bayesian methods. When assessing an existing bridge, it is common practice to collect information from the bridge in the form of samples. These samples are in general of small size, raising the question of how the corresponding statistical uncertainty can be taken into account on reliability estimates. The case study illustrates how Bayesian methods are especially suitable to deal with that source of uncertainty. Another strong point of the Bayesian methods is their ability to combine the information contained in the samples collected from the bridge with prior information, if any. This aspect will also be illustrated through the case study

LexOWL: A Bridge from LexGrid to OWL

The Lexical Grid project is an on-going community driven initiative that provides a common terminology model to represent multiple vocabulary and ontology sources as well as a scalable and robust API for accessing such information. In order to add more powerful functionalities to the existing infrastructure and align LexGrid more closely with various Semantic Web technologies, we introduce the LexOWL project for representing the ontologies modeled within the LexGrid environment in OWL (Web Ontology Language). The crux of this effort is to create a “bridge” that functionally connects the LexBIG (a LexGrid API) and the OWL API (an interface that implements OWL) seamlessly. In this paper, we discuss the key aspects of designing and implementing the LexOWL bridge. We compared LexOWL with other OWL converting tools and conclude that LexOWL provides an OWL mapping and converting tool with well-defined interoperability for information in the biomedical domain

Bridge-specific fragility analysis: when is it really necessary?

In seismic assessment of bridges the research focus has recently shifted on the derivation of bridge-specific fragility curves that account for the effect of different geometry, structural system, component and soil properties, on the seismic behaviour. In this context, a new, component-based methodology for the derivation of bridge-specific fragility curves has been recently proposed by the authors, with a view to overcoming the inherent difficulties in assessing all bridges of a road network and the drawbacks of existing methodologies, which use the same group of fragility curves for bridges within the same typological class. The main objective of this paper is to critically assess the necessity of bridge-specific fragility analysis, starting from the effect of structure-specific parameters on component capacity (limit state thresholds), seismic demand, and fragility curves. The aforementioned methodology is used to derive fragility curves for all bridges within an actual road network, with a view to investigating the consistency of adopting generic fragility curves for bridges that fall within the same class and quantifying the degree of over- or under-estimation of the probability of damage when generic bridge classes are considered. Moreover, fragility curves for all representative bridges of the analysed concrete bridge classes are presented to illustrate the differentiation in bridge fragility for varying structural systems, bridge geometry, total bridge length and maximum pier height. Based on the above, the relevance of bridge-specific fragility analysis is assessed, and pertinent conclusions are drawn

Arlington Memorial Bridge Spans the Decades as a Study in Long-Term Price Change

[Excerpt] The Arlington Memorial Bridge is one of seven existing bridges that carry automobile traffic across the Potomac River to and from Washington, DC. Though there have been bridges crossing the Potomac in the area since the first bridge constructed at the site of the Chain Bridge in 1797, these early bridges were often damaged by environmental factors, and others were replaced over time. Thus, the Arlington Memorial Bridge, opened for use on January 18, 1932, is the second-oldest of the bridges currently in use, after the Francis Scott Key Bridge (completed in 1923.) This article examines the history of the Arlington Memorial Bridge and compares the original construction with a contemporary proposed rebuilding of it, which provides an interesting illustration of long-term price change in the United States, with the help of Bureau of Labor Statistics (BLS) data