Journal of Infrastructure Systems: Recent submissions
Now showing items 961-980 of 1280
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Piezoelectric Sensor-Based Health Monitoring of Railroad Tracks Using a Two-Step Support Vector Machine Classifier
(American Society of Civil Engineers, 2008)A piezoelectric sensor-based health monitoring technique using a two-step support vector machine (SVM) classifier is developed for railroad track damage identification. A -
Experimental Study of an Adaptive Extended Kalman Filter for Structural Damage Identification
(American Society of Civil Engineers, 2008)An objective of the structural health monitoring system is to identify the state of the structure and to detect the damage when it occurs. Analysis techniques for damage identification of structures, based on vibration ... -
Optimal Repair and Inspection Rules under Uncertainty
(American Society of Civil Engineers, 2008)This paper focuses upon the optimal repair and inspection policies of infrastructure under uncertainty in the facility deterioration process. It is supposed that the condition of the facility, which is defined in continuous ... -
Transportation Infrastructure Performance Modeling through Seemingly Unrelated Regression Systems
(American Society of Civil Engineers, 2008)Deterioration modeling plays a central role in performance prediction, a key component in transportation infrastructure system management. The deterioration of a facility can be expressed in terms of numerous indicators. ... -
Design and Implementation of Scalable Wireless Sensor Network for Structural Monitoring
(American Society of Civil Engineers, 2008)An integrated hardware and software system for a scalable wireless sensor network (WSN) is designed and developed for structural health monitoring. An accelerometer sensor node is designed, developed, and calibrated to ... -
Vision-Based Monitoring of Locally Linear Structures Using an Unmanned Aerial Vehicle1
(American Society of Civil Engineers, 2008)Inspecting and monitoring oil-gas pipelines, roads, rivers, and canals are very important in ensuring the reliability and life expectancy of these civil systems. An autonomous unmanned aerial vehicle (UAV) can decrease the ... -
Time and Cost Saving Strategies for Water Pipe Lining Operations
(American Society of Civil Engineers, 2008)Repair and maintenance of existing distribution lines is an increasing concern for water utilities. While pipe lining activities are effective and generally less expensive than complete replacement, they still represent ... -
Pavement Management Accounting System
(American Society of Civil Engineers, 2008)In this paper, a pavement management accounting system (PMAS) is presented as a method for controlling the life cycle costs of road pavement. The aim of the PMAS is to provide decision makers with planning information ... -
Stochastic Duration Modeling of Pavement Overlay Crack Initiation
(American Society of Civil Engineers, 2008)In this paper we present the development of an empirical pavement overlay crack initiation model using condition survey data for the highway system in the state of Washington. We use a semiparametric Cox model and show ... -
Algorithm for Detection of Change Point in On-Line Monitoring Data
(American Society of Civil Engineers, 2008)The detection of abrupt changes in observed/estimated physical processes is an issue of concern in many applications. An algorithm for single change point detection in Gaussian white noise processes is presented in this ... -
Supply- and Output-Side Extensions to the Inoperability Input-Output Model for Interdependent Infrastructures
(American Society of Civil Engineers, 2007)The Inoperability Input-Output Model (IIM) was developed to help understand infrastructure interdependencies. Based on the Leontief Input-Output Model, the IIM approximates the physical interdependencies of infrastructures ... -
Automated Modal Parameter Estimation by Parallel Processing within Wireless Monitoring Systems
(American Society of Civil Engineers, 2008)With recent advances in low-cost wireless sensing and data acquisition technology, it has become feasible to instrument a large structure with a dense array of wireless sensors. Furthermore, analog-to-digital conversion ... -
Best Practices for Long-Lasting Low-Volume Pavements
(American Society of Civil Engineers, 2007)A majority of U.S. and international roads are low volume. Pavements on these roads, which are often owned or managed by local agencies with limited resources, represent a large transportation infrastructure asset and could ... -
Life-Cycle Energy Use and Greenhouse Gas Emissions Inventory for Water Treatment Systems
(American Society of Civil Engineers, 2007)Given the rising concerns over scarce energy resources and global climate change, life-cycle inventories focusing on energy use and greenhouse gas (GHG) emissions were developed for the City of Toronto municipal water ... -
Realized Economic Efficiency of Road Project Delivery Systems
(American Society of Civil Engineers, 2007)Lately project delivery methods where the implementer offers broader service packages are increasingly used in infrastructure projects worldwide. At the same time, the number of alternative project delivery methods has ... -
Life-Cycle Inventory of Energy Use and Greenhouse Gas Emissions for Two Hydropower Projects in China
(American Society of Civil Engineers, 2007)Two different sized hydropower projects in China, one with a capacity of -
Method for Comparative Performance Assessment and Evaluation of Consolidating Community Water Systems as a Regional Water System
(American Society of Civil Engineers, 2007)Community water systems (CWS) are facing significant external forces for change from decreasing water-resource availability, stricter water-quality regulations, decreasing levels of federal subsidy, increasing public ... -
Passive Structural Health Monitoring of Connecticut’s Bridge Infrastructure
(American Society of Civil Engineers, 2007)This paper reports on a long-term bridge monitoring program in Connecticut. Monitoring systems have been designed and installed on a series of different bridges, beginning in 1999. Ambient data are collected from normal ... -
Hierarchical Localization of Sensor Network for Infrastructure Monitoring
(American Society of Civil Engineers, 2008)Localization (determination of the position of each sensor node) of a large scale sensor network is an important issue for applying network sensing technique to infrastructure monitoring. This paper presents a concept and ... -
Compost Amended Soil Treatment for Mitigating Highway Shoulder Desiccation Cracks
(American Society of Civil Engineers, 2007)Certain types of compost materials have fibrous characteristics that exhibit moisture affinity suggesting that they could be used to stabilize expansive soils to control desiccation cracks. In order to understand shrinkage ...