Student presentations - Lightning Interest Group for Health ...

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Oct 15, 2013 (4 years and 23 days ago)

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LIGHTS

1


Lightning Interest Group for Health Technology and Science (LIGHTS)


Re: Preliminary

agenda for LIGHTS day conference: 12
th

September 2013



08h00


09h0
0



Registration and coffee


09h00


09h15

-

Welcoming address



H
.
O
.
D WITS
Electrical & Information Engineering


09h15



09h45

-

Dr Andrew Collier

(Understanding Lightning using Machine Learning Techniques)


09
h45



10h15

-

D
r Hugh Hunt

(Observations of lightning events)


10h15



10h45



Ron Holle
(
Lightning
-
related Safety and Demographics)


10h45



11h00



Coffee break


11h00
-

12h00



Students presentations

(2 x 30

minutes)

(Harry Lee, Brett Terespolsky)


12h00


13h00



Lunch,

networking

and
collaboration


13h00



13h45



Dr
Efraim B. Kramer

(
Emergency Medicine and

Lightning)


13h45



14h00

-

Morné Gijben

(A Unified Model based Lightning Threat Index for South Africa)


14h00

-

14h30



Koos Herselman

(The management of post
-
traumatic stress in lightning victims)


14h30
-

15h00

-

Student

presentations

(2
x 15 minutes)

(
xxxxx, xxxxx
)


15
h00
-
15h15



Coffee break


15h15



15h45



Dr Nhlonipho Nhlabatsi
(The Utilization of Lightning Data at the SA Weather
Service)


15h45


16h15



Dr Ryan Blumenthal

(Lightning injury mechanisms and mechanisms of death)


16h15


16h30



D
r Michael David

Grant

-

Concluding remarks

and
the
way forward for LIGHTS


16h3
0



Conclusion of proceedings















LIGHTS

2


ABSTRACTS, BIOGRAPHIES AND PHOTOGRAPHS OF SPEAKERS


Andrew
Collier



Dr Andrew Collier is a

Honorary Senior Lecturer at the University of KwaZulu
-
Natal. He also works as a Data
Scientist for Exegetic Analytics. His fields of interest include electromagnetic waves in space plasmas, wave
-
particle interactions, lightning and the application of mach
ine learning techniques in Science and Engineering.


Title:

Understanding Lightning using Machine Learning Techniques


Abstract:

The World Wide Lightning Location Network (WWLLN) provides continuous global coverage of the
Earth's lightning activity in real

time. With around 45 lightning discharges every second, WWLLN produces a
formidable quantity of data every year. Data reduction techniques like Principal Component Analysis (PCA) and
machine learning techniques like Support Vector Machines (SVMs) and Rand
om Forests are applied to
understand the evolution of global patterns of lightning activity and provide some short term predictive power.


Hugh Hunt



Hugh Hunt is a lecturer for the School of Electrical and Information Engineering at the University of
Witwatersrand. He completed his BSc (Eng) Electrical Engineering Degree in 2009 and went on to complete his
MSc (Eng) in Electrical Engineering 2012. He is currently working towards his PhD. His research involves the
fields of both lightning and high volta
ge engineering. He has worked with lightning location systems data,
specifically looking at their use in forensic investigations as well as performing actual testing of insulation and
surge protection using high voltage equipment and procedures.

Abstrac
t:
Observations of lightning events attaching to the Brixton Tower, Johannesburg and the South African
Lightning Detection Network (SALDN) interpretation of these events with specific reference to forensic
investigations.













LIGHTS

3


Ronald L. Holle




Ron
Holle is a meteorological consultant for Vaisala, Inc. Holle has worked extensively in meteorological
education issues, particularly those relating to lightning safety and the demographics of lightning victims and
damages. He has authored or co
-
authored
60 formally
-
reviewed journal papers, 12 books and book chapters,
and 296 informal papers.


Holle has worked with NOAA research laboratories in Norman, Oklahoma; Boulder, Colorado; Coral Gables,
Florida; and Silver Spring, Maryland as well as with Vaisala
, Inc. in Tucson, Arizona. He has analyzed cloud
-
to
-
ground and cloud lightning data from ground
-
based detection networks as they relate to radar echoes, rainfall,
flash floods, and winter weather, as well as compiling lightning climatologies.


He particip
ated in meteorological field programs in Florida and other locations in the U.S., the Caribbean, and
West Africa. He received his B.S. and M.S. degrees in meteorology from Florida State University, and took
additional coursework at the University of Miami
.


Mr. Holle was on the scientific organizing committees of the International Lightning Detection Conferences and
International Lightning Meteorology Conferences in Helsinki, Finland (2004), Tucson (2002, 2006, and 2008),
Orlando (2010), and Broomfield, Co
lorado (2012). He was elected a Fellow of the American Meteorological
Society in 2009, and received the Dr. T. Theodore Fujita Research Achievement Award from the National
Weather Association in 2008.


Title of Paper:

Lightning
-
related Safety and Demograp
hics


Abstract:

The annual number of lightning deaths has been compiled in the U.S. since 1900, and in a few other
developed countries for shorter periods. These time series show a large decrease from 6 deaths per million at
the start of the 20
th

century
to less than one in recent years. The decrease is similar to the population percentage
living in rural areas. Other factors include nearly complete availability of lightning
-
safe buildings and vehicles,
improved medical treatment, and better lightning ed
ucation and awareness of meteorological warnings.
However in many areas of the world, rural labor
-
intensive agriculture is the livelihood of many people who also
live in lightning
-
unsafe dwellings.


The main principle of lightning safety is that only two
certain safe places exist. One is a large substantial often
-
occupied well
-
grounded or otherwise lightning
-
protected building; the other is a fully
-
enclosed metal
-
topped
vehicle. It is emphasized that there are multiple mechanism of lightning injury. The

often
-
considered direct
strike is the least common, and is not the basis for lightning safety advice. Examples of warning methods and
related statistics will be provided.


An overview of the wide variety of applications of lightning detection network dat
a will be presented, including
the latest maps of U.S. and global lightning data. How meteorologists and others use such data will be
described briefly.







LIGHTS

4


Efraim Kramer



Prof Efraim

Kramer is the Head of the Division of Emergency Medicine and Honorary Adjunct Professor of
Exercise Science + Sports Medicine, Faculty of Health Sciences at the University of the Witwatersrand. He is a
member of the FIFA Medical Assessment + Research Cent
re (F
-
MARC) in Zurich and is appointed as the
Football Emergency Medicine Advisor for the FIFA Confederations Cup Brazil 2013 and FIFA World Cup
Brazil 2014. As Medical Officer to FIFA, CAF and SAFA, he is responsible for the provision of medical
services
in the football stadium environment , which is where his interest and responsibility regarding
“Lightning in Football Globally” has relevance.


Title of paper:

Emergency Medicine + Lightning


Introduction for the Chair:

Emergency Medicine healthcare pro
viders, both prehospital and emergency department, are involved in the
lightning injured patient, and associated family, friends and associates, from a prevention, medical management
and post
-
discharge point of view. Unfortunately, the medical fraternity r
emains very much is the Dark Ages
regarding Lightning and its multifaceted impacts regarding morbidity, mortality, medical management and
myths, all of which require active enlightening education. After all, these are the guys that are going to treat the
p
atient either on the field, in the ambulance or in the emergency department.


Abstract
:

The prevention and, if necessary, medical management of lightning injuries in Emergency Medicine presents
challenges in many facets because of the traditional myths
which remain ingrained and the current medical
science which is inadequately trained. Aspects of medical management involving activation of the emergency
medical services, safe speedy response, on
-
scene triage and diagnosis, out
-
of
-
hospital resuscitation,
emergency
department medical management and subsequent rehabilitation are all fraught with challenges that may result in
unintentional, inadequate, inexperienced medical care. This presentation will provide a spectrum of questions
and possible answers to t
his vexing problem.


























LIGHTS

5


Morne Gijben




Morné Gijben is a research scientist in the Nowcasting and Very Short
-
Range forecasting group at the South
African Weather Service. He completed his BSc (Hons) in Meteorology in 2010 at the
University of Pretoria.
His fields of research include lightning and convective weather in the 0
-

12 hour forecast scale. He has worked
on topics like anticipating lightning activity from numerical model fields and creating a lightning climatology
for S
outh Africa with data from the South African Lightning Detection Network (SALDN).


Title:

A Unified Model based Lightning Threat Index for South Africa


Abstract:

A Lightning Threat Index (LTI) that uses numerical weather prediction model fields was developed
for the South African region. The LTI provides an outlook map of where the lightning risk can be considered
high. This presentation will demonstrate the perfo
rmance of the LTI against the occurrence of observed
lightning from the South African Lightning Detection Network (SALDN).




Koos Herselman





Koos Herselman (SAC Dip.) Bio
-

As a Stress and Trauma Consultant. Koos works directly with people who
have su
ffered emotional trauma, providing post trauma counselling, grief counselling and stress management
coaching. In addition to this he provides training programs on how to avoid

becoming a victim of crimes such as
hijacking, rape and home invasions. Over the

past 8 years he

has worked with all kinds of people from senior
executives and professionals to the elderly and

children. During this time he has also travelled to other countries
in the Southern African region

to provide post trauma counselling at remote

mines and industrial plants where
major industrial

accidents have occurred. Koos has one major belief that drives him forward in his work, and
that is that human beings have the innate ability to overcome any challenge that they are faced with,

sometimes
just needing some guidance to connect with that ability.












LIGHTS

6



Nhlonipho Nhlabatsi



Dr. Nhlonipho Nhlabatsi

is currently a Senior Manager: Research at the South African Weather Service
(SAWS). He completed his PhD at the University of the Free State and has a number of publications and still an
academic supervisor to a number of PhD and MSc students. He is resp
onsible for research at SAWS at all time
-
scales of which the lightning sub
-
unit is part of.


Title:

The Utilization of Lightning Data at the SA Weather Service


Abstract:

South Africa is a lightning prone country and lightning related deaths in this country are about four
times higher than the global average. Lightning is one of the most spectacular meteorological phenomena and
the most common severe weather event to affec
t people directly. There are roughly 2000 thunderstorms in
progress around the world at any one time, producing about 30 to 100 cloud
-
to
-
ground flashes each second or
about five million flashes a day. Before the installation of the Lightning Detection Netw
ork, South Africa had
no reliable system to observe and monitor this phenomenon
.


Ryan Blumenthal




Dr Ryan Blumenthal: MBChB (Pret), MMed (Med Forens) Pret, FC For Path (SA) Dip For Med (SA) Senior
specialist forensic pathologist at the University of P
retoria’s Department of Forensic Medicine. His chief field of
interest is the pathology of trauma of lightning (keraunopathology). He has been involved in the publication of
numerous articles and textbooks on lightning and electrothermal injuries and has h
elped generate international
standard operating procedures and guidelines for lightning strike fatality and electrocution victims. He has
published widely in the fields of suicide and other areas involving the pathology of trauma. His chief mission in
life

is to advance Forensic Pathology Services both nationally and internationally. Interests outside of forensic
pathology include sleight
-
of
-
hand
-
magic, mountain
-
biking, bird
-
watching, squash, running and novel writing.


Abstract:
A discussion on the various lightning injury mechanisms and what to look for in clinical practice.






LIGHTS

7


Michael David Grant



Dr Michael David Grant Pr. Eng., PhD: Professional Electrical Engineer. Group leader CBI Electric. Recipient
of the Keith
Plowden young achievers award 2011.
He also won best young scientist award 2012 ICLP, Vienna.
Areas of expertise include
,
inter alia,

PV integration with the low
and medium voltage grid, e
xpert in lightning
and syste
m protection

and
knowledge and
experience with renewable energy systems. He is a m
ember of the
South African Institute of Electrical Engineers (council).



Student presentations:


Harry
Lee




BEngSc (BME)

BSc (Eng) Electrical, MSc (Eng) Electrical Candidate ,

University of the Witwatersrand


Yuan
-
chun Harry Lee is a student graduated from the University of

Witwatersrand in 2010 with a Bachelor’s
degree of Engineering Science in

Biomedical Engineering. He then further studied and obtained a Bachelor of

Science
in Electrical Engineering in 2012. He is currently pursuing a Master’s

degree of Science in Electrical
Engineering at the University of Witwatersrand

with a particular interest in lightning injuries.


Abstract:

An investigation on the effects of the
frequency components of the lightning

stroke to the human body

Lightning injuries to the human body can be classified into three main categories:
neurological,

cardiovascular, and external burns. The aim of this research is to investigate the effects of
the

frequency components of the lightning stroke regarding these lightning injuries. Only negative

cloud
-
to
-
ground
lightning and the direct strike scenario is considered. A simple model of the human

body which consists of a
cylindrical conductor is constru
cted in the COMSOL multiphysics

platform. A lightning stroke resembles a
shape which can be estimated by the double exponential

function. This double exponential function is used as
the model of the lightning impulse. The

lightning impulse is separated int
o its basis functions through the use of
the discrete Fourier

Transform. Each of these functions are passed through the human body model at various
contact

points and the results analysed. Properties such as the skin effect, current pathway, current densit
y

and charge transferred are investigated.






LIGHTS

8


Brett Ryan Terespolsky



Brett Terespolsky is an MSc student in the School of Electrical and Information Engineering at the University of
the Witwatersrand. He completed his BSc (Eng
) in Electrical Engineering Degree in 2011. Since then he has
been pursuing a masters degree in lightning research. He also has interests in software engineering and
modelling. This has led to his research in modelling the lightning process as a system of
circuits.


Title:

Circuit model to reproduce the first stroke in a lightning strike


Abstract:

The measurement of lightning currents has been investigated by numerous researchers over more than
five decades. These findings have been used in, amongst other
things, the creation of lightning protection
standards. These standards play a vital role in the design of equipment that can withstand lightning strikes. The
aim of this research is to develop a circuit model that can be used to simulate lightning current
, with particular
focus on applications in lightning protection system studies. The initial research is limited to the first return
stroke described by a Heidler function steepness factor of ten. Ultimately a generic algorithm will be developed
to simulate

any shape lightning current with any electrical load attached.