A real-life test bed for multi-agent monitoring of road network performance
This paper describes an approach to road network monitoring. The approach has the following main components: a multi-agent hierarchical monitoring system in which the agents are network elements such as crossings, road segments and routes, software engineering techniques to handle legacy sensors and to homogenise their heterogeneous data streams, distributed Kalman filtering to reduce sensor noise, and a traffic simulation model to help in predicting future traffic states and to replace missing physical sensors. The approach has resulted in a real-life test bed for network performance monitoring in which various configurations of agents and various ways of distributed Kalman filtering can be tested. The current, still rather simple monitoring configuration, is already in operational use for traffic management.
Keywords: road traffic monitoring, Kalman filtering, multi-agent systems, agent-based systems, road network performance, traffic simulation, modelling, traffic management
Improved wheat grains storage
Improved wheat grains storage management SmartScan25 was installed at the Israeli large flour mill to improve wheat grains storage management, save costs and reduce material losses. Israeli Mills Ltd, located in the city of Tel Aviv, is one of the leading local flour providers. The mill produces various types of wheat products such as: bran, white flour, semolina and more, for local use. The Problem Wheat is received at the plant by trucks. The wheat is sampled and wheat quality is tested for moisture,...
Noise Planning Software Used to Map Major EU Roadways
Most countries have a national noise policy to protect citizens from undesirable environmental noise levels from road, rail and air traffic and industrial sources. The European Noise Directive for the Assessment and Management of Environmental Noise outlines a coordinated method to achieve noise reduction in large cities as a first step, followed by smaller cities as a second step. The directive requires Member States to create strategic noise maps of all areas with a population over 250,000, roads with more than...
Environmental Noise (Booklet)
About this booklet This booklet deals with environmental noise − for example, noise from industrial sites, road and rail traffic, airports and fairgrounds. It does not cover related issues such as building acoustics, building vibration or domestic noise. Neither does it cover human response to vibration nor industrial uses of sound and vibration measurements. Please contact your Brüel&Kjær representative to receive further information regarding these issues. While we have made every...
Low-noise Parking at Madrid Airport
With over 34 million passengers, and handling over 360 000 flights annually, Madrid Barajas Airport, Spain is the fifth largest airport in Europe. It is owned by AENA (Aeropuertos Espaoles y Navegacin Area), who manage over 60 airports throughout Spain and Latin America and handle over 160 million passengers each year. On experiencing a growing number of complaints from the neighbouring community due to ground noise caused by aircraft in the parking area, Madrid Barajas Airport introduced night restrictions...
Measuring Road Traffic Noise
As part of an overall measurement programme to monitor road traffic noise in Århus (Denmarks second largest city), the Local Authority set up a noise measurement station on one of the major approach roads to Århus Harbour. This noise measurement station continually measures noise levels and can give a round-the-clock picture of noise level variations. Like most other districts, Århus Local Authority had used simulation models to determine noise levels, and only made limited use of the actual measurements. But...
European Project on Portable Emissions Measurement Systems: `EU-PEMS` Project
The European Commission through DG ENTR in co-operation with DG JRC launched in January 2004 a co-operative research programme to study the feasibility of portable emission measurement systems (PEMS) with a view to their application in Europe for in-use conformity (IUC) checking of heavy-duty vehicles. A six month planning phase between January and June 2004 concluded with the closure of the Call for Expression of interest published by DG ENTR. The technical and experimental activities started in August 2004 to...
Current Trends in Environmental Noise Monitoring in Europe
Introduction This paper briefly describes the state of the art of environmental noise monitoring development in Europe, including the needs, standards, legislation, data, technology, techniques and tools. This paper will concentrate on the following areas: • How Imagine and the development of ISO 20906 and ISO 1996 affect noise monitoring systems • The need and role of professional databases and the move towards noise management • How modern technology affects the design of state-of-the-art noise...
Methods for Removing Signal Noise from Helicopter Electromagnetic Survey Data
A geophysical analysis was conducted over the abandoned T&T subsurface mines and portions of the Muddy and Roaring Creek watersheds in northeastern Preston County, West Virginia. The data were collected using helicopter-borne measurements of frequency-domain electromagnetic (FDEM) conductivity (390, 1555, 6254, 25,800, and 102,680 Hz). Noise was a significant issue in the lowest frequency EM conductivity data, especially the 390 Hz and 1555 Hz data, noise removal was accomplished by standard spatial frequency...
An air quality modelling system for a medium-sized town: a case study in Estonia
The air pollution modelling system used in Tartu (population 101,000) is aimed at examining the pollution levels in different meteorological conditions, and determining optimal traffic schemes and strategic development plans for the city. The system consists of: (i) a Gaussian plume model AEROPOL, and (ii) a database on sources of NOx2Keywords: AEROPOL model, air pollution modelling, air pollution monitoring, decision support system, industrial pollution, traffic pollution, urban air quality
Army National Guard Training Center Sustainment Initiative
The 2002 Defense Authorization Act, requires a comprehensive assessment of unexploded ordnance, discarded military munitions, and munitions constituents located at current and former defense sites. To support this requirement, the Army National Guard (ARNG) is conducting a assessment of the environmental vulnerabilities at its Training Centers. The goals of the assessment include providing Installation Commanders an environmental sustainment profile of their installations as well as the ability for ARNG to...
The Detection of Nonconformances in Real Time
Introduction Many businesses now use systems that work in real time for acquiring, storing, analyzing and issuing data in all their plants in an efficient manner. These real time archiving systems enable you to obtain data with the aid of sensors and electronic control panels directly and quickly. These real-time acquisition systems store crucial data on operations carried out within the company as well as the state of its manufacturing processes. The aggregation of data thus enables you to carry out an analysis...
Which Route Delivers the Best Results - Packaged Software or In-House Development?
The software “Buy or Build” debate is being won inexorably by packaged software in the majority of applications. With scientific and engineering software, the key was the emergence of the PC and the consequent PC package market in the 1980s. The trend over the years since then has been a one way street leading away from in-house development towards the use of package software, with the increasing availability and quality of package software as both a cause and an effect of this trend. For most applications, Buy...
Statistical evaluation of dioxin filter efficiency using a fixed installed dioxin emissions ...
Aerobic Bioremediation of MTBE and BTEX at a USCG Facility
Untitled Document Abstract: A full-scale in-situ bioremediation of dissolved methl-tert-butyl-ether (MTBE) and benzene, toluene, ethylbenzene and xylenes (BTEX) was successfully completed in 2000 at the U.S. Coast Guard (USCG) Support Center in Elizabeth City, North Carolina. The goal of the project was to enhance the natural attenuation of dissolved petroleum constituents without interfering with facility operations. The project goal was achieved by aquifer oxygenation which enhances natural...
Reuse of Wastewater in a Textile Dyestuff Batch Production Plant
Abstract The aim of this paper is to investigate the applicability of current wastewater integration concepts to a batch production plant. As a case study a textile dyestuff batch production plant was chosen. First, a short introduction will be given to the current wastewater integration methods, which will be referred to later. Then, a water flow analysis of this water flow system is presented. This step is necessary to identify those processes generating the highest amount of wastewater and what actions can...
Noise Monitors and Meters
Sound level meters Description and ApplicationsThe sound level meter is a lightweight instrument for the measurement of sound pressure level (SPL) in decibels. All ANSI-approved meters meet minimum requirements that include an A-weighted network, a slow-response meter characteristic, and a fully graduated scale with measurements ranging from 80 to 130 dBA. The Type II meter is most frequently used. Applications are in worker exposure and noise evaluations. Octave Band AnalyzerSome sound level meters may have...
Comparative Risk Assessment
` Comparative risk assessment provides a systematic way to compare environmental problems that pose different types and degrees of health risk. It combines information on the inherent hazards of pollutants, exposure levels and population characteristics to predict the resulting health effects. Using data from available sources, rapid, inexpensive comparative risk assessments can identify the most significant health problems. Together with consideration of costs, technical feasibility and other factors, the...
Introduction The ability to hear sounds is a sensory function vital for human survival and communication. However, not all sounds are wanted. `Unwanted sounds`, for which the term `noise` is normally used, often have their origin in human activities (mainly transport, industry and households). This article addresses environmental noise also referred to in the scientific literature as community, or residential, noise. Environmental noise is the noise experienced by people generated outside households. Noise...
Temperature Correction Study for HR(PA) Membrane
Introduction Flow rate testing was performed on MS19 and MS12 elements (217 and 219 elements, 26 mil-spacer) to establish a temperature correction curve for current HR(PA) membranes. The results obtained were evaluated against the existing Osmonics® correction curve and other manufacturers’ information. Salt passage characteristics and the effect of elevated temperature on membrane performance were also noted during the study. Conclusions 1.- Good correlation with the theoretical temperature correction curve...