Search results

1 – 10 of over 2000
Article
Publication date: 1 March 2006

Luis C. Rabelo, Jose Sepulveda, Jeppie Compton and Robert Turner

The main objective of this paper is to introduce the development of a decision‐support environment for a complex problem: space range safety. Simulation modeling can provide a…

3194

Abstract

Purpose

The main objective of this paper is to introduce the development of a decision‐support environment for a complex problem: space range safety. Simulation modeling can provide a good environment to support range safety managers.

Design/methodology/approach

The paper describes the different models and the processes to find the different knowledge sources. In addition, it investigates statistically the most important factors. This will help determine emergency management procedures and sources of variability.

Findings

This case study provides guidance and an example to follow for other problems in aerospace (in particular new the analysis of new vehicles). There are important factors to consider in order to implement risk management in National Aeronautics and Space Administration.

Research limitations/implications

There are several limitations; blast and debris effects need to be added.

Practical implications

First, it provides a guide in order to persuade managers of the utilization of decision‐support systems based on geographical information systems. Second, it shows that there is open source software (Calpuff in our environment) which can be used and integrated to make a more comprehensive environment. Validation is a big issue. In addition, simulation can help make decisions about future vehicles or events.

Originality/value

This is the first implementation of a virtual range (there is not an integrated system similar to this one available). This will be valuable to other safety managers not only for space exploration but also environmentalists and homeland security managers.

Details

Aircraft Engineering and Aerospace Technology, vol. 78 no. 2
Type: Research Article
ISSN: 0002-2667

Keywords

Article
Publication date: 1 March 2006

Luis Rabelo, Jose Sepulveda, Jeppie Compton, Reinaldo Moraga and Robert Turner

The main objective of this paper is to introduce the development of a decision‐support environment for space range safety. Simulation modeling can provide a good environment to…

3083

Abstract

Purpose

The main objective of this paper is to introduce the development of a decision‐support environment for space range safety. Simulation modeling can provide a good environment to support disaster and prevention management.

Design/methodology/approach

The paper describes the different models and the processes to find the different knowledge sources. This will help determine emergency management procedures.

Findings

This case study provides guidance and an example to follow for other problems in aerospace. There are important factors to consider in order to implement risk management in NASA.

Research limitations/implications

There are several limitations; first debris effects need to be added.

Practical implications

First, the paper provides a guide in order to persuade managers of the utilization of decision support systems based on geographical information systems. Second, it shows that there is open source software which can be used and integrated to make a more comprehensive environment. Validation is a big issue.

Originality/value

This is the first implementation of a virtual range. This will be valuable to other safety managers not only aerospace but also environmentalists and homeland security managers.

Details

Disaster Prevention and Management: An International Journal, vol. 15 no. 2
Type: Research Article
ISSN: 0965-3562

Keywords

Article
Publication date: 2 October 2017

Kabiru Abdullahi Ahmad, Mohd Ezree Abdullah, Norhidayah Abdul Hassan, Hussaini Ahmad Daura and Kamarudin Ambak

Porous asphalt has been used for than 50 years, but it was originally developed in 1970 at Franklin institute in Philadelphia, Pennsylvania. By 1974 the first formalized procedure…

1329

Abstract

Purpose

Porous asphalt has been used for than 50 years, but it was originally developed in 1970 at Franklin institute in Philadelphia, Pennsylvania. By 1974 the first formalized procedure was created by the federal highway administration to design mixtures. Many researches on porous asphalt mixture have been conducted for the past two decades. However, there remains some concern about the potential adverse impacts of infiltrated surface water on the underlying groundwater. The purpose of this paper is to presents a short review on the application of porous asphalt pavement stormwater treatment.

Design/methodology/approach

In this paper, a critical review on history and benefits is presented followed by review of general studies of using porous asphalt pavement, and some recent scientific studies that examine potential contamination of soil and groundwater because of infiltration systems.

Findings

This paper indicates that porous asphalt pavement is more efficient than conventional pavements in terms of retaining pollutants, improving the quality of water and runoff while maintaining infiltration.

Originality/value

This paper may also help reduce land consumption by reducing the need for traditional storm-water management structures. However, on the other hand, the priority objectives which is minimizing increased flooding and pollution risks while increasing performance efficiency and enhancing local environmental quality-of-life is achieved.

Details

World Journal of Engineering, vol. 14 no. 5
Type: Research Article
ISSN: 1708-5284

Keywords

Abstract

Details

Urban Transport and the Environment
Type: Book
ISBN: 978-0-08-047029-0

Article
Publication date: 4 April 2016

Rui Pitarma, Miguel Lourenço and João Ramos

Indoor environments are characterized by several pollutant sources. Some of these can be sufficiently characterized through the prediction of the airflow and pollutant

Abstract

Purpose

Indoor environments are characterized by several pollutant sources. Some of these can be sufficiently characterized through the prediction of the airflow and pollutant distribution patterns. The purpose of this study was to simulate, analyze and compare different locations of known pollutant source inside a ventilated room.

Design/methodology/approach

Computational fluid dynamics modelling approach was used to analyze the prediction of the airflow and pollutant distribution patterns for different locations of known pollutant source inside a ventilated room by mixing ventilation.

Findings

Distinct areas of poor air quality, perfectly identified by concentration fields, were given. The indoor air quality obtained by the different simulated conditions was analyzed and compared.

Research limitations/implications

Pollutant concentration was not measured in the validation experiments (qualitative validation based on the velocity fields).

Practical implications

Once the contaminant concentration fields are calculated based on the source location, the model is very useful to choose the best place to install any pollutant indoor equipment to preserve breathing zones.

Originality/value

Providing an effective indoor air quality assessment to prevent exposure risk. The results would be useful for making decisions to optimize the design procedure, such as establish the best location to install polluting equipment, occupied areas and their interdependence with ventilation systems. In addition, this tool also helps to choose the best location and correct set point adjustment for the pollutant sensors.

Details

Facilities, vol. 34 no. 5/6
Type: Research Article
ISSN: 0263-2772

Keywords

Article
Publication date: 9 September 2014

Karin Regina de Casas Castro Marins

Energy use in urban areas has turned a subject of local and worldwide interest over the last few years, especially emphasized by the correlated greenhouse gases emissions. The…

Abstract

Purpose

Energy use in urban areas has turned a subject of local and worldwide interest over the last few years, especially emphasized by the correlated greenhouse gases emissions. The purpose of this paper is to analyse the overall energy efficiency potential and emissions resulting from integrated solutions in urban energy planning, in the scale of districts and neighbourhoods in Brazil.

Design/methodology/approach

The approach is based on the description and the application of a method to analyse energy performance of urban areas and support their planning. It is a quantitative bottom-up method and involves urban morphology, urban mobility, buildings and energy supply systems. Procedures are applied to the case study of Agua Branca urban development area, located in Sao Paulo, Brazil.

Findings

In the case of Agua Branca area, energy efficiency measures in buildings have shown to be very important mostly for the buildings economies themselves. For the area as a whole, strategies in promoting public transport are more effective in terms of energy efficiency and also to decrease pollutant emissions.

Originality/value

Literature review has shown there is a lack of approaches and procedures able to support urban energy planning at a community scale. The bottom-up method presented in this paper integrates a plenty of disaggregated and multisectoral parameters at the same stage in urban planning and shows that is possible to identify the most promising actions by building overall performance indexes.

Details

Smart and Sustainable Built Environment, vol. 3 no. 2
Type: Research Article
ISSN: 2046-6099

Keywords

Content available
Book part
Publication date: 1 July 2004

Abstract

Details

Urban Transport and the Environment
Type: Book
ISBN: 978-0-08-047029-0

Article
Publication date: 5 October 2015

Ravindra Kumar, Errampalli Madhu, Anil Maan, Sanjeev Sinha and Nasim Akhtar

The purpose of this paper is to estimate combined exposure factor (CEF) due to impact of different transport-related environmental pollutants, air quality and noise level in Delhi…

Abstract

Purpose

The purpose of this paper is to estimate combined exposure factor (CEF) due to impact of different transport-related environmental pollutants, air quality and noise level in Delhi city.

Design/methodology/approach

The Estimation of CEF takes into account the potential relative uptake of each pollutant (CO, NO, NO2, O3, SO2, PM10 and PM2.5) by the boarding and alighting of commuters at Public Transport facility and using motorcycle. With the help of CRRI mobile air pollution monitoring laboratory and previous CRRI reports.

Findings

Combined exposure to environmental pollutants is determined based on the taking weighting factor of pollutant stressor. Results shows average stressor for CO, NO, NO2, SO2, PM2.5 and noise were 2.79 mg/m3, 331.83, 210.25, 16.70, 241.3883 µg/m3, and 72.5 dB(A), respectively. Similarly for motorcyclist, results shows average stressor for CO, NO, NO2, SO2, PM2.5 and noise were 5.1 mg/m3, 483, 398, 19.3, 295 µg/m3, and 82.7 dB(A), respectively. The results show higher exposure value for motorcyclist.

Originality/value

Knowledge of exposure factor due to air and noise pollutant for bus commuter in sitting and standing and motorcyclist is not known for Delhi city.

Details

World Journal of Science, Technology and Sustainable Development, vol. 12 no. 4
Type: Research Article
ISSN: 2042-5945

Keywords

Article
Publication date: 27 March 2009

Shaik S. Sihabuddin and Samuel T. Ariaratnam

Today, engineers are faced with engaging the construction option that not only provides the best cost advantage, but also considers environmental sensitivities to create the most…

Abstract

Purpose

Today, engineers are faced with engaging the construction option that not only provides the best cost advantage, but also considers environmental sensitivities to create the most sustainable solution. The purpose of this paper is to identify a methodology to determine the pollutant emissions from utility construction methods.

Design/methodology/approach

A survey of the literature was conducted to determine the need and developments in the area of emissions from construction industry. With the use of approved methodologies, an application program that is simple and user friendly was designed to estimate emissions from utility construction projects.

Findings

The results of the research shows that the emissions can be calculated from standard equations using details available at any project site. With minimum effort, construction industry personnel can use available historical project data to determine and quantify emissions from their construction activities.

Research limitations/implications

The research examines the major air pollutants from equipment/trucks burning diesel fuel. The impact of existing climatic conditions, weather and maintenance of machineries is not considered in the emission calculations.

Practical implications

Estimation of emissions during the design phase of a project will help regulators and decision makers choose a construction methodology that not only incorporates time, cost, and social benefits, but also environmental benefits.

Originality/value

Utilization of the tool created by this research should make contractors conscious towards the impact of their activities on their environment by showing them a methodology for estimating such emissions. The research shows the path to promulgate their methodologies in a world that is going “Green”.

Details

Journal of Engineering, Design and Technology, vol. 7 no. 1
Type: Research Article
ISSN: 1726-0531

Keywords

Article
Publication date: 13 November 2018

Anand Jaiswal, Cherian Samuel and G. Abhishek Ganesh

The purpose of this paper is to provide a solution for greening the supply chain of small and medium enterprises (SMEs) by minimising the vehicular pollutant emission in the…

Abstract

Purpose

The purpose of this paper is to provide a solution for greening the supply chain of small and medium enterprises (SMEs) by minimising the vehicular pollutant emission in the logistics network.

Design/methodology/approach

The paper proposes an optimisation model to reduce the pollution emission in the logistics of supply chain network in SMEs. The work considers vehicle routing and selection of suppliers, manufacturers and assemblers according to the availability of various Bharat Stage Emission Standards type vehicles. Introsort sorting based selection algorithm is used to solve the problem. The proposed solution is implemented using C++ on an experimental data set for analysing the model.

Findings

The outcome of the study is a pollution optimisation model for logistics of SMEs. The finding shows an approach to reduce total vehicular pollution emission in the logistics network in meeting the demand. The model is tested over an experimental study, and the result findings show which supply chain entities, type of environmental standard vehicles and vehicle routes are selected for the specific demand.

Research limitations/implications

The proposed model is confined to pollution optimisation with limited parameters only and does not consider cost and other factors that can be included in future work.

Practical implications

The work can be used for limiting pollution in logistics system as the corporate social responsibility of enterprises.

Originality/value

Proposed work presents a sustainable and green solution for pollution control in logistics activities of the SMEs.

Details

Management of Environmental Quality: An International Journal, vol. 30 no. 4
Type: Research Article
ISSN: 1477-7835

Keywords

1 – 10 of over 2000