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Book part
Publication date: 1 November 2007

Irina Farquhar and Alan Sorkin

This study proposes targeted modernization of the Department of Defense (DoD's) Joint Forces Ammunition Logistics information system by implementing the optimized innovative…

Abstract

This study proposes targeted modernization of the Department of Defense (DoD's) Joint Forces Ammunition Logistics information system by implementing the optimized innovative information technology open architecture design and integrating Radio Frequency Identification Device data technologies and real-time optimization and control mechanisms as the critical technology components of the solution. The innovative information technology, which pursues the focused logistics, will be deployed in 36 months at the estimated cost of $568 million in constant dollars. We estimate that the Systems, Applications, Products (SAP)-based enterprise integration solution that the Army currently pursues will cost another $1.5 billion through the year 2014; however, it is unlikely to deliver the intended technical capabilities.

Details

The Value of Innovation: Impact on Health, Life Quality, Safety, and Regulatory Research
Type: Book
ISBN: 978-1-84950-551-2

Article
Publication date: 1 January 1990

J.G. Llaurado

After analysing the differences between ionising and non‐ionisingradiations, the author considers the interaction between radiations andthe environment, in particular that…

Abstract

After analysing the differences between ionising and non‐ionising radiations, the author considers the interaction between radiations and the environment, in particular that affecting human tissues. The mechanism of the interaction is described in detail. It is shown that no consensus exists at present as to whether the electric or magnetic field is biologically important. Another difficulty is that roles of field strength, duration of exposure, and intermittent versus continuous exposure are also unknown at present. It is maintained that several years of research in biomedical sciences are needed to determine what components of exposure are the factors in health disorders induced by electromagnetic fields.

Details

Environmental Management and Health, vol. 1 no. 1
Type: Research Article
ISSN: 0956-6163

Keywords

Article
Publication date: 1 September 1994

Esmeray Acartürk

Discusses environmental factors which may have harmful effects on thecardiovascular system and cause acute or chronic disease. Classifiesthese factors as chemical, physical…

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Abstract

Discusses environmental factors which may have harmful effects on the cardiovascular system and cause acute or chronic disease. Classifies these factors as chemical, physical, biological and psychosocial. Concentrates on describing the chemical, physical and biological elements which directly cause cardiovascular diseases, such as nicotine and carbon monoxide (chemical); temperatue and electricity (physical) and viral infections such as maternal coxsackie (biological). Concludes by stressing the need for more intensive studies on this subject.

Details

Environmental Management and Health, vol. 5 no. 3
Type: Research Article
ISSN: 0956-6163

Keywords

Article
Publication date: 14 June 2013

Robert Bogue

This paper aims to describe the effects of radiation on certain classes of sensors and electronic devices and discusses the sensors used in high radiation environments.

Abstract

Purpose

This paper aims to describe the effects of radiation on certain classes of sensors and electronic devices and discusses the sensors used in high radiation environments.

Design/methodology/approach

Following an introduction, this paper firstly discusses the effects of radiation on semiconductors. It then considers the sensor technologies employed in high radiation applications and examines the impact of radiation on MEMS devices. Finally, it describes a radiation‐tolerant imaging sensor technology.

Findings

Ionising and non‐ionising radiation in terrestrial and space environments can exert a detrimental effect on semiconductor devices and has led to the development of a range of radiation hardening technologies. Most of the sensors used in nuclear power plants utilise long‐established and well‐characterised technologies which are inherently radiation‐tolerant but silicon MEMS devices are more prone to damage and a range of failure mechanisms have been identified. Most conventional image sensors are susceptible to radiation damage but a radiation‐hard technology termed the charge‐injection device has been developed which overcomes these problems.

Originality/value

This paper provides details of the sensor technologies used in high radiation applications.

Details

Sensor Review, vol. 33 no. 3
Type: Research Article
ISSN: 0260-2288

Keywords

Article
Publication date: 18 October 2021

Norman Haussmann, Martin Zang, Robin Mease, Markus Clemens, Benedikt Schmuelling and Matthias Bolten

Inductive charging systems for electrically powered cars produce a magneto-quasistatic field and organism in the vicinity might be exposed to that field. Magneto-quasistatic…

Abstract

Purpose

Inductive charging systems for electrically powered cars produce a magneto-quasistatic field and organism in the vicinity might be exposed to that field. Magneto-quasistatic fields induce electric fields in the human body that should not exceed limits given by the International Commission of Non-Ionizing Radiation protection (ICNIRP) to ensure that no harm is done to the human body. As these electric fields cannot be measured directly, they need to be derived from the measured magnetic flux densities. To get an almost real-time estimation of the harmfulness of the magnetic flux density to the human body, the electric field needs to be calculated within a minimal computing time. The purpose of this study is to identify fast linear equations solver for the discrete Poisson system of the Co-Simulation Scalar Potential Finite Difference scheme on different graphics processing unit systems.

Design/methodology/approach

The determination of the exposure requires a fast linear equations solver for the discrete Poisson system of the Co-Simulation Scalar Potential Finite Difference (Co-Sim. SPFD) scheme. Here, the use of the AmgX library on NVIDIA GPUs is presented for this task.

Findings

Using the AmgX library enables solving the equation system resulting from an ICNIRP recommended human voxel model resolution of 2 mm in less than 0.5 s on a single NVIDIA Tesla V100 GPU.

Originality/value

This work is one essential advancement to determine the exposure of humans from wireless charging system in near real-time from in situ magnetic flux density measurements.

Details

COMPEL - The international journal for computation and mathematics in electrical and electronic engineering , vol. 41 no. 3
Type: Research Article
ISSN: 0332-1649

Keywords

Article
Publication date: 14 June 2022

Manuele Bertoluzzo, Paolo Di Barba, Michele Forzan, Maria Evelina Mognaschi and Elisabetta Sieni

The paper presents the Finite Element (FE) evaluation of the magnetic field emitted by a Wireless Power Transfer Systems used to charge the battery of electrical vehicles. An…

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Abstract

Purpose

The paper presents the Finite Element (FE) evaluation of the magnetic field emitted by a Wireless Power Transfer Systems used to charge the battery of electrical vehicles. An original approach for reducing the mesh size of the 3D FE model is used.

Design/methodology/approach

A minicar equipped with a circular coil is considered, while the transmitting coil is coherent with the Society of Automotive Engineers (SAE) standard. The different shape of the coils and a possible misalignment are considered as possible sources of emitted magnetic field, which a person could be exposed to. To this end, a FE model is implemented. Because of the complexity of the mesh, a suitable 3D model is used. This model is previously validated and then used for evaluating the magnetic field around the Wireless Power Transfer Systems (WPTS).

Findings

The magnetic flux density around the WPTS is calculated and compared with the International Commission on Non-Ionizing Radiation Protection (ICNIRP) limits.

Originality/value

The proposed 3D model, whose validation is shown in the paper, is able to compute the magnetic field with high accuracy despite the presence of a conductive and ferromagnetic thin structure, the steel layer related to the car frame, which would need a very fine mesh with a large number of elements to solve Maxwell equations.

Details

Engineering Computations, vol. 39 no. 7
Type: Research Article
ISSN: 0264-4401

Keywords

Article
Publication date: 2 March 2015

Ping-Ping Ding, Lionel Pichon, Laurent Bernard and Adel Razek

The purpose of this paper is to calculate the induced electromagnetic fields in human body exposed to the wireless inductive charging system of electric vehicles has been…

Abstract

Purpose

The purpose of this paper is to calculate the induced electromagnetic fields in human body exposed to the wireless inductive charging system of electric vehicles has been conducted based on the numerical simulation.

Design/methodology/approach

A homogeneous human body model is built and a representative wireless inductive charging system is used for the exposure assessment. The numerical simulation relies on finite element method with formulations in terms of the magnetic vector potential. The electromagnetic fields in terms of magnetic flux density and electric field are computed in the human body and compared with the electromagnetic exposure limits.

Findings

It has been found that the induced EMFs in the near-field exposure configuration greatly comply with the safety guidelines.

Originality/value

This study could help the development of the wireless inductive charging system with meeting the safety standard of radiation protection.

Details

COMPEL: The International Journal for Computation and Mathematics in Electrical and Electronic Engineering, vol. 34 no. 2
Type: Research Article
ISSN: 0332-1649

Keywords

Article
Publication date: 1 April 1985

William E. Murray

During the past decade, the use of video display terminals (VDTs) in information processing and related applications has grown exponentially. Recent estimates place the number of…

Abstract

During the past decade, the use of video display terminals (VDTs) in information processing and related applications has grown exponentially. Recent estimates place the number of terminals in the workplace at more than ten million. Along with this rapid growth there has been a concomitant increase in concern about the radiation emissions from the VDT. Several types of radiation can be emitted by the terminal. Cataracts, reproductive problems, and skin rashes have been reported by VDT operators and are alleged to result from radiation exposure. However, measurements of the radiation emissions, when compared to the present occupational exposure standards, lead to the conclusion that the terminal does not present a radiation hazard to the VDT operator.

Details

Library Hi Tech, vol. 3 no. 4
Type: Research Article
ISSN: 0737-8831

Article
Publication date: 14 August 2007

Isabelle Kern, Sybille Sachs and Edwin Rühli

In the research project “Good practices of stakeholder view” three firms in the Swiss telecommunications industry were analysed in order to compare their stakeholder involvement

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Abstract

Purpose

In the research project “Good practices of stakeholder view” three firms in the Swiss telecommunications industry were analysed in order to compare their stakeholder involvement. This paper seeks to illustrate how these three firms, namely Swisscom, Sunrise, and Orange, dealt with a particular problem all of them faced: the deployment of antennas for mobile telephony that in some cases was strongly opposed by the population. Thereby, the “Telco” firms were challenged as societal institutions and had to defend their licence to operate. The three firms chose different strategies to deal with the problem.

Design/methodology/approach

The paper is based on comparative case studies that combine qualitative and quantitative aspects.

Findings

The benefits of good stakeholder relations are illustrated as well as the problems that might arise when stakeholders are ignored.

Research limitations/implications

The findings are based on a sample of three telecommunication firms.

Practical implications

The paper suggests good practices for firms that aim to improve their stakeholder interactions.

Originality/value

This paper sheds light on the value of different strategies in the stakeholder relations to maintain a firm's licence to operate and to pursue its business in the intended way.

Details

Corporate Governance: The international journal of business in society, vol. 7 no. 4
Type: Research Article
ISSN: 1472-0701

Keywords

Article
Publication date: 16 November 2010

F. Dughiero, M. Forzan and E. Sieni

The purpose of this paper is to describe how numerical models of human body have been applied for the evaluation of current density induced by strong magnetic field, to verify the…

Abstract

Purpose

The purpose of this paper is to describe how numerical models of human body have been applied for the evaluation of current density induced by strong magnetic field, to verify the respect of the basic restriction proposed by International Committee Non Ionizing Radiation Protection (ICNIRP) guidelines.

Design/methodology/approach

Finite element method has been used in order to compute the induced current density in a suitable human body model and a simplified model – a homogeneous cylinder – due to a time‐varying magnetic field.

Findings

In the practical case of a resistance welding equipment, the implemented computational technique has been used in order to evaluate both the magnetic flux density and the induced current density in different tissues. Their values have been also compared with the ones obtained in a homogeneous cylinder.

Practical implications

The proposed method can be used in order to evaluate the compliance of the magnetic field produced by resistance welding equipments with ICNIRP limits.

Originality/value

A realistic model of human body has been used. In the paper, the difference on magnetic flux density and corresponding current density values is pointed out for various source positions using a heterogeneous tetrahedral human body model.

Details

COMPEL - The international journal for computation and mathematics in electrical and electronic engineering, vol. 29 no. 6
Type: Research Article
ISSN: 0332-1649

Keywords

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