東華大學圖書館 |

Language: English

Help

回圖書館首頁

手機版館藏查詢

Back

Switch To: Labeled | MARC Mode | ISBD

Modeling of interactions of electrom...

Caputa, Krzysztof.

Linked to FindBook

Google Book

Amazon

博客來

Modeling of interactions of electromagnetic fields with human bodies.

Record Type:	Electronic resources : Monograph/item
Title/Author:	Modeling of interactions of electromagnetic fields with human bodies./
Author:	Caputa, Krzysztof.
Description:	143 p.
Notes:	Source: Dissertation Abstracts International, Volume: 64-07, Section: B, page: 3427.
Contained By:	Dissertation Abstracts International64-07B.
Subject:	Engineering, Electronics and Electrical. -
Online resource:	http://pqdd.sinica.edu.tw/twdaoapp/servlet/advanced?query=NQ82465
ISBN:	0612824659

Modeling of interactions of electromagnetic fields with human bodies.
Caputa, Krzysztof.

Modeling of interactions of electromagnetic fields with human bodies. - 143 p.

Source: Dissertation Abstracts International, Volume: 64-07, Section: B, page: 3427.

Thesis (Ph.D.)--University of Victoria (Canada), 2003.

Interactions of electromagnetic fields with the human body have been a subject of scientific interest and public concern. In recent years, issues in power line field effects and those of wireless telephones have been in the forefront of research. Engineering research compliments biological investigations by quantifying the induced fields in biological bodies due to exposure to external fields. The research presented in this thesis aims at providing reliable tools, and addressing some of the unresolved issues related to interactions with the human body of power line fields and fields produced by handheld wireless telephones.

ISBN: 0612824659Subjects--Topical Terms:

626636
Engineering, Electronics and Electrical.

Modeling of interactions of electromagnetic fields with human bodies.
LDR:04147nmm 2200337 4500 001 1857699
005 20040811084322.5
008 130614s2003 eng d
020 $a 0612824659
035 $a (UnM)AAINQ82465
035 $a AAINQ82465
040 $a UnM $c UnM
100 1 $a Caputa, Krzysztof. $3 1945413
245 1 0 $a Modeling of interactions of electromagnetic fields with human bodies.
300 $a 143 p.
500 $a Source: Dissertation Abstracts International, Volume: 64-07, Section: B, page: 3427.
500 $a Advisers: Maria A. Stuchly; Michal Okoniewski.
502 $a Thesis (Ph.D.)--University of Victoria (Canada), 2003.
520 $a Interactions of electromagnetic fields with the human body have been a subject of scientific interest and public concern. In recent years, issues in power line field effects and those of wireless telephones have been in the forefront of research. Engineering research compliments biological investigations by quantifying the induced fields in biological bodies due to exposure to external fields. The research presented in this thesis aims at providing reliable tools, and addressing some of the unresolved issues related to interactions with the human body of power line fields and fields produced by handheld wireless telephones.
520 $a The research comprises two areas, namely development of versatile models of the human body and their visualisation, and verification and application of numerical codes to solve selected problems of interest. The models of the human body, which are based on the magnetic resonance scans of the body, are unique and differ considerably from other models currently available. With the aid of computer software developed, the models can be arranged to different postures, and medical devices can be accurately placed inside them.
520 $a A previously developed code for modeling interactions of power line fields with biological bodies has been verified by rigorous, quantitative inter-laboratory comparison for two human body models. This code has been employed to model electromagnetic interference (EMI) of the magnetic field with implanted cardiac pacemakers. In this case, the correct placement and representation of the pacemaker leads are critical, as simplified computations have been shown to result in significant errors.
520 $a In modeling interactions of wireless communication devices, the finite difference time domain technique (FDTD) has become a <italic>de facto</italic> standard. The previously developed code has been verified by comparison with the analytical solution for a conductive sphere. While previously researchers limited their verifications to principal axes of the sphere, a global (volumetric) fields evaluation allowed for identification of locations of errors due to staircasing, and the singularities responsible for them.
520 $a In evaluation of safety of cellular telephones and similar devices, the specific absorption rate (SAR) averaged over a 1 g (in North America) or 10 g (in Europe) cube is used. A new algorithm has been developed and tested, which allows for automatic and reliable identification of the maximum value with a user-selected inclusion of air (if required). This algorithm and the verified code have been used to model performance of a commercial telephone in the proximity of head, and to model EMI of this phone with a hearing aid placed in the ear canal. The modeling results, which relied on a proper representation of the antenna consisting of two helices and complex shape and structure of the telephone case, have been confirmed by measurements performed in another laboratory. Similarly, the EMI modeling has been in agreement with acoustic measurements (performed elsewhere). The latter comparison has allowed to confirm anticipated mechanism of the EMI.
590 $a School code: 0244.
650 4 $a Engineering, Electronics and Electrical. $3 626636
650 4 $a Physics, Electricity and Magnetism. $3 1019535
690 $a 0544
690 $a 0607
710 2 0 $a University of Victoria (Canada). $3 1019404
773 0 $t Dissertation Abstracts International $g 64-07B.
790 1 0 $a Stuchly, Maria A., $e advisor
790 1 0 $a Okoniewski, Michal, $e advisor
790 $a 0244
791 $a Ph.D.
792 $a 2003
856 4 0 $u http://pqdd.sinica.edu.tw/twdaoapp/servlet/advanced?query=NQ82465