British masters Championships 2018 - 8-10 JUNE PLYMOUTH LIFE CENTRE, PLYMOUTH OFFICIAL PROGRAMME - Swimming.org
←
→
Page content transcription
If your browser does not render page correctly, please read the page content below
British masters
Championships 2018
8–10 JUNE
PLYMOUTH LIFE CENTRE, PLYMOUTH
Funding Partner Official Partner Supplier Endorsed Product
OFFICIAL PROGRAMME
MTV PRESENTS
Two huge days of live music
on Plymouth Hoe
26 JULY
BASTILLE
ELLA EYRE
PROFESSOR GREEN
REWIRE & VARSKI
27 JULY
PETE TONG
And the Heritage Orchestra perform
IBIZA CLASSICS
CONDUCTED BY JULES BUCKLEY
TOM FINDLAY (GROOVE ARMADA)
02 DANNY HOWARD
follow us on twitter @BRITISHSWIMMING
Event Partner
OCEANCITYSOUNDS.CO.UK
£25 PER DAYBOOKING FEE
WELcome
Richard Whitehead
Swim England President
It is a privilege to welcome already during my presidency and have been
you to the British Masters impressed by the breadth of activities offered
Championships at the and by the number of people attending the
Plymouth Life Centre. centre. On behalf of British Swimming and the
home nations, I would like to thank the Council,
This event should be a great
together with the staff of Plymouth Life Centre for
opportunity to catch up with
all the help British Swimming has been given to
old friendships, and also
stage this prestigious event.
to make new ones and,
of course, to enjoy a weekend of competitive I would also like to recognise the time and
swimming. commitment of the many other people who are
It always encourages me when attending Masters needed to make the event happen. A lot of these
events to see so many older swimmers – they people are volunteers who freely give up their
should be an inspiration to us all. time to enable events like this to happen. As we
celebrate National Volunteers week, I would like
Plymouth City Council is committed to supporting to say an even bigger thank you to all of you for
competitive sport and has worked hard to make all the work that you do to make this and other
this a successful event. Their investment in the events a success.
Life Centre is one they can be proud of. I have
Finally my good wishes to all competitors for an
visited the centre on a number of occasions
enjoyable and successful weekend.
Cllr Peter Smith
Deputy Leader of Plymouth City Council
Welcome one and all to The Council is proud of its work with Everyone
Plymouth. We are thrilled to Active, British Swimming and partners in growing
be hosting the 2018 British and promoting swimming locally and nationally.
Masters Championships As the city continues its path towards Mayflower
in Britain’s Ocean City. Our 400 in 2020 events like this can only serve to
award-winning Plymouth enhance our city’s reputation as a world class
Life Centre will provide sporting venue.
the perfect setting for
what is one of the biggest To all involved – competitors, coaches, families
competitions in the domestic Masters calendar. and spectators – please enjoy our hospitality and,
if you have time, some of the other great things
With some of the best swimmers from all over Plymouth has to offer. I wish all of the swimmers
the country competing within their age groups every success in their events.
this promises to be an exciting weekend. We
hope you enjoy this opportunity and support all of
the competitors in their efforts to chase personal
best times and, for some, the thrill of victory.
03
ACKNOWLEDGEMENTS
On behalf of SWIM ENGLAND
Swim England President: Richard Whitehead Masters Swimming Officer: Sharon Lock
Swim England Board Chairperson: Mike Farrar Head of Events: Ekaterina Boyd
Chief Executive Officer: Jane Nickerson Events Officer: Thysia Pater-Dye
Chief Commercial & Marketing Officer: Web and Communications: Alison Clowes
Mike Thompson Designer: Helen Panayi
Meet Management Team
Executive Director: Tony Ward Officials:
Entries Administrator: Bernie Buck Jury of Appeal: Roger Prior, David Broomhall and
Technical Directors: Jill Beard Annita Rees
Technology Manager: David Rush Referees: Helen Whittle, Stephen Christian and
Sarah Ashton
Technology Team: Martyn Hudson
Starters: Gerry Metcalf and Rhiannon Edwards
Chief Recorder: Bernie Buck
Technical Officials: Susanna Carden, Carolyn Cox,
Recording Team: Chris Felce and
Susan Harrison, David Avery, Fiona Wilkinson,
Andrew Richards
Christopher Elliott, Susan Butler, Jason Tout,
Resolution Management: Jean Childs, Helen Malcolm Hopes, Esther Rookes, Nicola Tonge,
Ward Rosemary Brimacombe, Christopher Hall,
Colorado Operators: Andy Hutchinson, Nicky Vause, Kay Willcox, Theresa Atal,
Andy Kinsman and Derrick Grenardo Julia Airlie, Karen Adams, Tracey Roberts,
Sport Presentation Manager: Teri Jeynes Susan Podger, Maureen Davies, Sue Gabriel,
Daniel Corbett, Paul Robbins, Julie Matraves,
Field of Play Manager: Paula Durrant
Anne Jolly, Nick Jenkin
Field of Play Team: Ann Thorpe and Lily Thorpe
Announcer: Neil Tremayne
We would like to thank all staff and
volunteers involved in the organisation and
delivery of the British Masters Championships
2018. Our thanks extends to the warm up
marshals and runners.
A special thank you to Plymouth Leander who
supported us with this event, without their
help this event would not be possible.
04
MAIN HEADING
GRAB YOUR FRIENDS
AND SWIM THE TEAM2K
29 JULY | ROTHER VALLEY COUNTRY PARK
team 2k Enter Now!
swimming.org/openwaterfestival
05EVENT INFORMATION
MEDALS
Medals should be collected from the Front Desk in the entrance foyer as soon after the declaration of results
as possible. Swimmers who break a World, European or British record will be presented with their medals on
poolside and presentations will take place before the start of the next session.
Warm up periods
The warm ups in the main competition pool will be in four periods of 15 minutes each. The exception being the
800m where all age groups will warm up together (session 1); women in lanes 0 – 4 and men in lanes 5 – 9.
Warm up periods for sessions 2 – 8 are split in different age groups:
• Women – First 15 minutes 45 & Over
• Women – Second 15 minutes 18 – 44
• Men – Third 15 minutes 45 & Over
• Men – Fourth 15 minutes 18 - 44
• Lane 9 is designated as a one way sprint lane throughout all warm up sessions.
• Lanes 0, 2, 4, 6 and 8 – CLOCKWISE – Lanes 1, 3, 5 and 7 – ANTI CLOCKWISE.
• Additional sprint lanes will be opened for the last 5 minutes of each session.
• Diving is prohibited in all warm up sessions except in designated sprint lanes.
• Restrict your warm ups to the session in which you are competing.
• Practise backstroke starts in designated sprint lanes only.
• When resting/stopping keep to the corners of the lane.
• When entering the water, do not jump or dive in.
• Choose the lane where the swimmers best match your speed.
• Be conscious that others are also warming up.
• Please note that fins, bungees, hand paddles and snorkels are not allowed at this event.
The diving pit will be available throughout the meet, with six lanes. There will be signs indicating the direction of
swimming in each lane, please adhere to these and no diving.
These arrangements have been made to make the best use of warm up facilities, given the number of swimmers
in each session. The Executive Director may change warm up timings at his discretion. Please listen for any such
announcements.
Results
The results will be uploaded to swimmingresults.org and will be displayed on the walls near poolside.
Event Notice Boards
Important event information will be posted on the Event Notice Boards located in the foyer, next to the diving pit
and near the entrance to the spectator balcony.
06Withdrawals
If you have entered an event you wish to withdraw from, please follow the withdrawal procedure below. Refunds
will not be made.
The withdrawal process relies upon swimmers’ co-operation to keep the number of empty lanes to a minimum. If
you do not intend to swim, please withdraw from your event as early as possible to avoid creating an empty lane.
If you want to withdraw from a 50m event it is not necessary to follow the procedure.
• To withdraw from an event by 5pm 7 June
Email: bernie.buck22@gmail.com
• To withdraw from an event after 5pm 7 June
You will need to withdraw in person at the Resolutions Desk, located in the diving events office or by
telephone – 07563 750 846. Text messages and voicemails will not be accepted. You must speak to someone.
The phone will not be answered between the hours of 10pm and 7am.
Resolution Desk
The Resolution Desk can be found in the diving events office which is located between the changing rooms and
poolside. It will be signposted. The Resolution Desk will manage queries including but not limited to Withdrawals,
Re-Entry and Relay Declarations.
Venue Café Opening Times
A selection of hot and cold food and drinks are available to purchase from the venue café throughout the day.
The opening times are as below:
• Friday 8am – 6pm
• Saturday 8am – 6pm
• Sunday 8am – 5pm
Security
Spectators, competitors and team staff are asked to be extra vigilant and take care not to leave their belongings
unattended. Any concerns should be reported to event or venue staff.
07Swim England Photography Guidance We are all well aware of the wide range of devices including mobile telephones which have photographic and filming capabilities. This enables the capture of both static and moving images. It should be acknowledged that the majority of images taken within a Swim England setting are appropriate and taken in good faith. However, images of children and adults can be misused, and sharing images widely without consent may betray a confidence or identify of a child or adult, which could present a risk of harm to that individual if common sense procedures are not followed. Swim England encourage all spectators and participants at Swim England events to make themselves familiar with the photography and filming arrangements for the event and be vigilant during that event. Should individuals have any concerns about photography or filming at the event, this should be brought to the immediate attention of the Swim England Event Officer present. Swim England is committed to ensuring that everyone who participates in Swim England activities are able to take part in an enjoyable, safe environment and be safeguarded from harm. If you have any safeguarding concerns at the event, please contact an Event Officer immediately to disclose your concerns. Event Photography and Filming Events will be photographed and may be live streamed. Static images will be displayed on the Swim England website www.swimming.org and at the venue. They will be used to promote the sport at this event and events in the future. Moving images may be displayed at the venue and via live stream at www.swimming.org (subject to the event being live streamed). In addition, the Swim England may use these recordings and images for the purposes of education and training, swimmer analysis, promotion, performance, development and selection and event analysis. In such instances where the event is being live streamed, it will not be possible to provide the option to refuse consent to filming and if there are any concerns, please speak to the Swim England Event Officer present. Individuals may, however, wish to refuse consent to static photography, whereby a Photography Refusal of Consent Form is made available from the event ticket desk. The full Swim England Guidance on Photography can be found in Wavepower, our Child Safeguarding Policy and Procedures. A copy of Wavepower is also held by the Swim England Event Officer. If there are any concerns about photography/filming at Swim England events, please speak to the Swim England Event Officer present at the event or contact the Data Protection Officer. First Aid There will not be a doctor present at this meet. Pool staff will administer first aid where necessary. Please contact a member of security or a steward if you require assistance. Merchandise A variety of Swim England British Masters and Event Merchandise is available to purchase from the front of house desk in reception. Swim England water bottle – £6 Swim England swimming phone case (variety of iPhone sizes available) – £7 Swimming Times magazine – £3 British Masters 2018 event bottle – £6 British Masters 2018 pin badge – £ 2.50 British Masters 2018 cotton shopper bag – £3 08
schedule
Friday 8 JUNE Saturday 9 JUNE Sunday 10 JUNE
Session 1 – 9am Session 4 – 9am Session 7 – 9am
101 Mixed 800m Freestyle 401 Women 400m Freestyle 701 Men 50m Backstroke
402 Men 400m Freestyle 702 Women 50m Backstroke
403 Women 50m Breaststroke 703 Men 400m
404 Men 50m Breaststroke Individual Medley
405 Mixed 4x100 Freestyle Relays 704 Women 400m
Individual Medley
705 Men 200m Freestyle
706 Women 200m Freestyle
707 Men 4x100m Medley Relays
708 Women 4x100m
Medley Relays
Session 2 – 1:30pm Session 5 – 1pm Session 8 – 1:15pm
201 M
ixed 4x100m 501 Women 100m Backstroke 801 Mixed 4x50m
Medley Relays 502 Men 100m Backstroke Freestyle Relays
202 Men 200m Butterfly 503 Women 50m Butterfly 802 Mixed 4x200m
203 Women 200m Butterfly 504 Men 50m Butterfly Freestyle Relays
204 Men 100m Breaststroke 505 Women 200m Individual Medley 803 Women 100m Butterfly
205 Women 100m Breaststroke 506 Men 200m Individual Medley 804 Men 100m Butterfly
206 M
en 4x200m 507 Women 4x50m Freestyle Relays 805 Mixed 1500m Freestyle
Freestyle Relays 508 Men 4 x50m Freestyle Relays
207 W
omen 4x200m
Freestyle Relays
Session 3 – 4:30pm Session 6 – 5pm
301 Mixed 4x50m Medley Relays 601 Women 200m Breaststroke
302 Men 50m Freestyle 602 Men 200m Breaststroke
303 Women 50m Freestyle 603 Women100m Freestyle
304 Men 200m Backstroke 604 Men 100m Freestyle
305 Women 200m Backstroke 605 Women 4x50m Medley Relays
306 M
en 4x100m 606 Men 4x50m Medley Relays
Freestyle Relays
307 W
omen 4x100m
Freestyle Relays
09Looking back
at last year’s
GB Masters’ records
Records tumbled at the 2017 GB Masters 27.65 in the 50m butterfly.
as more than 530 swimmers descended on Paul Barnard is still the record holder in two events he
Scotland for the popular three-day event. set best times in at last year’s GB Masters. He finished
in 4:17.85 in the 35-39 400m freestyle and then clocked
One world record, eight European records and 51
4:51.05 in the 400m individual medley.
British records were set at the Aberdeen Sports Village
Aquatics Centre. Kathleen Tunnicliffe, a former school teacher, who set
a new British record of 39:44 for the 65-69 category
Sophie Casson, of Carnforth Otters, set a new world
in the 50m backstroke, said: “To me swimming is
best in the 1500m freestyle (30-34) that had stood for
everything.
eight years. Her time of 17:20.55 was more than five
seconds quicker than the previous best and was one of “I have been swimming for twenty years as a Masters
two records she set at the event which are still standing swimmer after a thirty year gap. It keeps me fit, healthy
ahead of the 2018 GB Masters in Plymouth. Casson and gives me a goal to work towards which is great.”
also holds the 200m backstroke record after clocking
2:18.76 in Aberdeen. “For anyone thinking of getting into Masters
Freestyle swimmer Karen Graham still holds the three I would say why not? Why wouldn’t I want to
records she set in Aberdeen in the 50-54 age group. keep healthy, why wouldn’t I want to make
Her times of 1:04.09 in the 100m race, 2:18.77 in the lifelong friendships and why wouldn’t I want
200m event and 4:58.38 in the 400m competition
something positive in my life?”
means she currently holds four of the six freestyle
records in that age group.
One of those went to Rebecca Stewart who recorded a In total, 37 of the 60 best times set in Aberdeen for the
time of 27.66 in the 50m race. GB Masters and Senior Age Group Championships are
still standing.
Three records set by Alec Johnson in the 55-59 age
group are also still standing. He clocked 31.63 in the Will they be smashed this weekend in Plymouth?
50m backstroke and 2:29.49 in the 200m backstroke To view last year’s results, visit
– and completed his hat-trick of bests with a time of swimscotland.co.uk/meets17/GBMasters
Sophie Casson
competes at the Swim
England Masters
National Champs 2017
10MASTERS AD 11
Take a dip in open water
Have you ever fancied swapping the pool for If the individual Masters Championships doesn’t
open water swimming? appeal, why not sign up for the Team2K race with your
friends or family?
If so, there’s still time to enter Swim
Swimmers will tackle the 2,000m course in teams of
England’s Open Water Masters four, with each member having to swim at least one
Championships at Rother Valley County Park, 200m lap. How the rest of the distance is split is down
Sheffield, on 29 July. to you. Everyone who competes in the race will receive
a commemorative medal.
The event is held as part of a two-day Open Water Entries for the Team2K and the Masters
Festival which also features a Team2K mass Championships will close on Monday 11 July.
participation event and the national age group To find out more information, visit
championships. swimming.org/openwaterfestival
Tony and Sue’s reunion call
Calling all GB International swimmers and Anyone who competed for their country, in swimming
divers from the ‘60s! Here’s your chance or diving in or around 1968, are invited including
Olympians from 1964; those who were on the
to get involved in a reunion taking place in
Commonwealth Games teams of 1966 and 1970
London on Saturday 13 October. and the World Student Games teams of 1965, 1967
and 1970.
Mexico ‘68 Team Captain Tony Jarvis and fellow
Olympian, Sue Haigh (Williams), are hoping to reach Tony Jarvis and Sue Haigh (Williams) would love to
as many former team members as possible and make hear from you asap and can be contacted via email:
it a day to remember to coincide with 50 years since tony@anthonyajarvis.com or
the Mexico Olympics and the following day’s BOA 1968 suehaigh11@gmail.com
Olympians gathering.
12Swim England
Masters National
Championships 2018
27-29 October | Ponds Forge, Sheffield
Entries open Wednesday 13 JuneBeing the eldest
of the group
Helen Gorman has been there and done it. She is a former World Masters champion as well
as holding many European and British records. Here she gives a tongue-in-cheek viewpoint
of training at her new non-Masters swimming club, City of Cardiff.
I refuse to say I’m old but, having joined a new swimming club, here are some of the observed perils of being the
oldest person in the club by 20 years…
• I’m old enough to be my coach’s mother, and could feasibly be the grandmother
of some of the others in my squad.
• My personal best times are older than anyone I train with.
• The warm-ups and the drill sets are the hardest parts of the sessions as kids do everything at 100mph.
• Not understanding any of the frequently quoted cinema references or why Stormzy is cool.
• Discovering that my fins are ‘old school’, but being able to get an upgrade via a hand-me-down from
a 13-year old who has already grown out of hers (result!).
• Being the person that constantly says ‘so, what are we doing?’ because I can’t see the white board, or hear
the coach explaining the set.
• But there are many more upsides… Missing a PB is never cause for distress, they were all too long ago to
care now; and the kids think that being a Masters world champion is REALLY cool!
Do any of these resonate with you? Why not share your experiences on social media using the hashtag
#BritMasters2018
To find out your nearest Masters club, visit swimming.org/masters/getting-into-masters-swimming
14Get a head
MAIN HEADING start
Lumie Bodyclock simulates a gentle sunrise to wake you naturally.
At bedtime, drift off to sleep with a gradual sunset. Original Lumie
Bodyclock is a medical device that is shown to help you feel re-energised
and ready to perform – that’s why top British athletes include Lumie
Bodyclock in their training schedule. Wake up to a life made bright.
20% discount available to British Swimming members
See the full range at lumie.com
life made bright lumie.com
16event conditions
1 General Conditions 2 Individual Events
1.1 The event promoter is Swim England, 2.1 The individual events shall be (for both men
who will appoint a Meet Director for the and women)
competition. Anything not covered by
50m, 100m, 200m, 400m, 800m,
these conditions will be decided by the
1500m Freestyle
Meet Director.
50m, 100m, and 200m Backstroke,
1.2 The Championships shall be held annually
Breaststroke, and Butterfly
under FINA Swimming Rules and FINA
Masters Rules unless otherwise provided 200m, and 400m Individual Medley.
in these Event Conditions, the British 2.2 All events are Heat Declared Winner within
Swimming Disciplinary Code and any each individual age classification. In each
additional conditions (printed in the event with the exception of the 50m events
respective meet information). These Rules competitors will be seeded according to their
apply to all Masters and Senior age groups. entry time and will compete against those
For conditions not covered by FINA Rules (for with similar times from the various age
example, Health and Safety regulations and groups taking part in the event. The last heat
other guidelines) the host nation’s rules and in each event will be spear head seeded. For
regulations shall apply. 50m events competitors will be seeded in
1.3 For individual and team events, competitors age groups as far as possible.
must either be registered with Swim 2.3 The age groups for individual Masters events
England as category 2 swimmers, Scottish shall be for men and women:
Swimming, Swim Wales equivalent, or
have competitive membership of clubs 18-24 years 25-29 years 45-49 years
which belong to swimming federations 65-69 years
affiliated to FINA. Temporary ASA Category 30-34 years 50-54 years 70-74 years
2 members are not eligible to enter these
35-39 years 55-59 years 75-79 years
Championships.
40-44 years 60-64 years 80-84 years.
1.4 The age of competitors shall be determined
as at midnight on 31 December in the And in five year bands as high as necessary.
year of competition. All competitors must
2.4 800m Freestyle is a mixed event and will
be 18 years or over on the first day of the
be capped at 140 entries or 3 hrs duration
Championships.
whichever is first.
1.5 A competitor can only compete for one club
2.5 1500m Freestyle is a mixed event and will be
in the competition and must be a registered
capped at 40 entries - 20 men & 20 women.
member of that club on the day that they
enter.
173 Team Events club they wish to represent by the published
closing date for individual entries to the
3.1 The team events shall be:
competition.
Men’s and Women’s 4 x 50 m Freestyle and
3.8 The mixed teams shall consist of two
Medley Team Relays
competitors of each sex swimming in any
Men’s and Women’s 4 x 100 m Freestyle and order.
Medley Team Relays
Men’s and Women’s 4 x 200 m Freestyle
Team Relays 4 Entries
Mixed 4 x 50 m Freestyle and Medley Team 4.1 All entries shall be received by the appointed
Relays Championships Administrator by the relevant
closing date accompanied by the appropriate
Mixed 4 x 100 m Freestyle and Medley Team registration and entry fee.
Relays
4.2 The Promoter reserves the right to close
Mixed 4 x 200m Freestyle Relays. entries before the published closing date
3.2 All team events will be Heat Declared Winner should the event or session reach maximum
within each age group classification. capacity.
3.3 The age groups for Masters team events 4.3 Qualifying times will be used and
shall be: competitors entering an event will have had
to have a time recorded British rankings
100-119 years 200-239 years faster than or equal to the qualifying time set
120-159 years 240-279 years for that event and achieved on or after the
1st June 2 years prior to the closing date of
160-199 years 280-319 years
entries to the competition.
And in 40-year increments as high as
Competitors from other swimming
necessary.
federations affiliated to FINA must have
3.4 The combined ages of the team members swum the qualifying times for the events
at midnight on 31 December in the year they enter and if requested provide evidence
of competition must fall within the age from their national or international rankings
band given above with the proviso that all within the qualifying period.
team members must be 25 years of age
4.4 Para Competitors with swimming
or older on the 31 December in the year of
classification which is held on the British
competition.
Swimming or World Para Swimming
3.5 There shall also be team events for teams Classification Database at the time of entry
with the combined ages at midnight on 31st shall be exempt from qualifying times.
December in the year of competition of 72
4.5 Competitors and teams whose entries have
years and above with all team members
been accepted are expected to swim unless
being aged 18 years or over on the day of
they have formally withdrawn in accordance
their swim.
with withdrawal policy.
3.6 Clubs are limited to a maximum of one
4.6 There is a limit of six individual events per
team in any one age group in each event and
competitor.
individual swimmers can only swim in one
team in each event.
3.7 All swimmers, including those who are only
swimming in relay teams, must be entered
on the meet database in the name of the
185 Withdrawals 8 Awards
5.1 Information about how to withdraw and the 8.1 Medals shall be awarded to the first three
associated time deadlines will be published placed individual competitors and teams in
in the Competitor Information Pack. each age.
8.2 The Cupar Trophy shall be awarded to the
club, British or overseas, whose swimmers
6 Re-entry
gain the most points as set out below in
6.1 Competitors entered in 400m Individual Masters events in the Championships (i.e.
Medley, 400m, 800m and 1500m events are individual age group 25-29 and older, and
required to confirm their intention to swim relay age group 100-119 and older).
in these events by re-entering in accordance
1st place individual 3 points team 6 points
with the deadlines in the Competitor
Information Pack. 2nd place individual 2 points team 4 points
3rd place individual 1 points team 2 points
7 Competitors with a Permanent plus for all swims completed without
Disability disqualification, including 1st, 2nd, and 3rd
places: individual 1 point and team 2 points.
7.1 A competitor who has a permanent disability
shall not be disqualified where the disability
prevents them from complying with the 9 Safety
rules of a particular stroke, provided that
the disability has been notified to the referee 9.1 All competitors must ensure that they
by the competitor or their representative observe all safety announcements and
before the race takes place, supported by a conduct themselves with safety in mind
Certificate of Swimming Disability or similar at all times. Swimmers must follow the
document issued by their federation or a instructions of the warm up marshals,
copy of their entry on the British Swimming failure to do so may exclude them from the
database identifying their disability. competition.
19TYR IS THE
OFFICIAL PARTNER OF
®
Leading-edge technology causes Proprietary coating repels water Advanced engineering allows fully
water to surround the fabric, rather than and keeps the suit dry and compressive, bonded seams to conform and stretch
saturate it. The hydrospheric effect keeping swimmers lightweight and fast. with the swimmer’s body, resulting
optimizes the swimmer’s position in the in a precisely fitted, ultra compressive suit
water, thus reducing drag and that won’t restrict natural movement.
maximizing speed and efficiency.You can also read
