Two Local football experts shared mixed views on the Reggae Boyz’s chances against Nicaragua in the second leg of their CONCACAF World Cup qualifier in Manugua, this evening at 8:30.pm.Football analyst and administrator, Clyde Jureidini, believes the Boyz are that much better than their opponent and will get the required two or more goals to see themselves through to the next round.However, former national assistant coach, Bradley Stewart, thought the Boyz got it so wrong first time around that he doubts if they can get it right this time, especially with so many first-choice players out.”I expect they would correct the errors.. and that they come in a more serious frame of mind and start with a lot more urgency at the beginning of the game and put pressure on the opponent, even though they are at home and, hopefully, that pressure should count for the amount of goals we need,” said Jureidini.improvement mandatoryHowever, he warned that there cannot be a repeat of the indiscipline that cost the team in the first leg on Friday.”The disparity (between the teams) was largely in the execution … our discipline and application to the task we should correct. Having lost the first game, we should come out and play much better and with a lot more purpose to get the result,” he added.Stewart, on the other, has his doubts, based on the application in the first game and the fact that more first-choice players might miss this match.”What you call this? Mission Impossible? the veteran coach mused. “For the first game, we weren’t ready psychologically, and we underestimated this team. There were many things that were depressing … and when you make those mistakes at this level, I don’t think you are going to recover,” he assessed more seriously.”Given what has happened to Wes Morgan, (Jobi) McAnuff and (Gareth) McCleary (absent due to club commitments), Gil Barnes can’t play on (astro) turf, and Austin might not play, and if Austin don’t play, our defensive capabilities will be hampered,” he continued.However, he thinks Jamaica are much better and good enough to get the result and advance.”It doesn’t help them (Nicaragua) to play too defensive, as we will create chances, so they have to play cautious. This team is rated 139th, and we are rated 52, so there must be a difference.”But if we get the approach so wrong in the first match, then I am wondering if we can get it right this time around,” he questioned.
Two news stories on birds may not seem to flock together. One is about their supreme aeronautical engineering. The other ponders when they evolved. A story on EurekAlert and Science Daily describes how engineers are eyeing birds, bats and insects for design ideas. The appeal is clear from the following comparisons:A Blackbird jet flying nearly 2,000 miles per hour covers 32 body lengths per second. But a common pigeon flying at 50 miles per hour covers 75. The roll rate of the aerobatic A-4 Skyhawk plane is about 720 degrees per second. The roll rate of a barn swallow exceeds 5,000 degrees per second. Select military aircraft can withstand gravitational forces of 8-10 G. Many birds routinely experience positive G-forces greater than 10 G and up to 14 G.It seems audacious, therefore, that humans name their aircraft after birds. In many ways, a blackbird is top gun over a Blackbird, and a skyhawk rolls circles around a Skyhawk. No barnstormer could match a barn swallow for daring. Human aircraft may reach higher speeds and carry heavier masses, but in terms of flight control, they seem stuck at the dodo stage. Wei Shyy, an aeronautical engineer, admires animal flyers. “They’re not only lighter, but also have much more adaptive structures as well as capabilities of integrating aerodynamics with wing and body shapes, which change all the time.” He added, “Natural flyers have outstanding capabilities to remain airborne through wind gusts, rain, and snow.” That’s why he is studying the possibilities of using flapping wings for aircraft. Imitating the ability of natural wings to deform quickly might allow pilots to “delay stall, enhance stability and increase thrust.” The unsteady pace of flapping flight gives the animal the ability to adapt quickly to wind gusts and changing conditions. The engineer marvelled at a dragonfly’s ability to stay on course in the wind, considering how light it is. He didn’t even mention that these flyers can all reproduce themselves and use environmentally friendly fuel. Meanwhile, in a different thought collective, evolutionary biologists are puzzling over the timing of bird evolution. Live Science, PhysOrg and Science Daily say that the consensus used to be that modern birds evolved from dinosaurs late in the Cretaceous. Now, however, researchers at three universities have announced a fight on the date. Their reanalysis “offers the strongest molecular evidence yet for an ancient origin of modern birds, suggesting that they arose more than 100 million years ago, not 60 million years ago, as fossils suggest.” In other words, the fossil record and the inferences from molecular evolution have yielded “conflicting results.” They explained the difference by appealing to the paucity of the fossil record and the realization that the molecular clock is unreliable. Joseph Brown explained the problem, “different lineages can ‘tick’ at different rates, so applying a single rate to an entire tree could lead to very suspect results.” This was described as the “rock-clock gap.”Did the evolutionary fluff give you as much a thrill as the engineering article? Engineers are forward-thinking scientists. They use evidence that is observable, testable and repeatable. They are continuing the practice of the Wright brothers who were inspired by birds over a hundred years ago – and look where that science has led mankind. We have just seen that even now, after a century of human aeronautical engineering that has taken us from awkward contraptions to the edge of space, our bird, bat and insect neighbors still have wonderful secrets to share. Isn’t design science of much more value, inspiration and usefulness than a silly story about some lizard that held out its arms 100 million years ago (01/25/2008) and, strictly by chance, mastered pitch, yaw and roll? Let’s get science back from flights of fancy to a wing and a prayer.(Visited 21 times, 1 visits today)FacebookTwitterPinterestSave分享0
17 September 2007London-listed Petra Diamonds and a local empowerment partner have bought the disused Kimberley Underground mines in the Northern Cape province from De Beers for R78.5-million and plan to restore production within the next six to 12 months.Petra Diamonds said in a statement last week that it had formed a joint venture with Sedibeng Mining, its black economic empowerment (BEE) partner, to acquire the mining and associated assets of the Wesselton, Du Toitspan and Bultfontein mines, which together constitute the Kimberley Underground mines.Petra will own 74% and Sedibent 26% of Kimberley Underground mines, which has an expected lifespan of at least 12 years. De Beers halted its underground operations around Kimberley in late 2005.“Alongside Petra’s highly prospective Angolan exploration assets, the acquisition of Kimberley Underground is an important addition to Petra’s substantial base of producing assets in South Africa,” Petra Diamonds chairman Adonis Pouroulis said.“Together, Kimberley Underground, Koffiefontein and Petra’s fissure mines will contribute an annual production in two years’ time of around 400 000 carats.”Petra expects annual production from Kimberley Underground to be in excess of 100 000 carats, bringing in revenue of approximately US$16-million (R115-million) per year.The company said that it would pay De BeersR15-million in cash, while the remainingR63.5-million would be used to assume De Beers’ rehabilitation obligations for Kimberley Underground mines.According to the company, which has operations in South Africa, Botswana, Angola and Sierra Leone, it will run the mines on a care and maintenance basis on behalf of De Beers until it receives all required mining authorisations from South African authorities to mine in its own right.These include the transfer of mining rights and the transfer and delegation of rehabilitation obligations and various liabilities.Petra diamonds already operates two mines in the Free State province and one each in North West province and the Northern Cape.SAinfo reporter Want to use this article in your publication or on your website?See: Using SAinfo material
Safa’s Football School of Excellence setfor a R3-million renovation. (Image: Safa) MEDIA CONTACTS • Mandla Mazibuko Safa Football School of Excellence +27 11 974 1999 RELATED ARTICLES • Millions to boost SA’s 2010 legacy • FNB pours R40-million into local football • Grassroots football alive and kicking • Boost for school footballNosimilo RamelaFifa has donated R3-million (US$437 655) towards reviving South Africa’s Football School of Excellence, which was once a breeding ground for top-quality players who went on to join the country’s national squad, Bafana Bafana.The school was set up in 1994 in Elandsfontein, east of Johannesburg, and is run by the South African Football Association (Safa).Fifa’s donation will come from its Goal Project Funding initiative, which helps national football associations around the world establish centres, natural and artificial pitches, and schools that develop players of the Beautiful Game.Over the years Safa’s school has produced some of the country’s best football players – one of which is Steven Pienaar, who now plays for English Premier League club Everton and South Africa’s national team.Safa said it hopes the proceeds from Fifa will help the school improve its finances and leadership so it’s once more able to produce top-quality football stars.“In the past few years we had a problem where the school was no longer attracting quality youngsters, players who would do well for our junior national teams,” said Safa’s deputy president Mandla Mazibuko.But, he said, there have been some recent improvements. “Everything is back on track at the school. We had trials all over the country in 2010. We are now going for quality again.”“If you look at a number of players who went through the school of excellence, they have done very well. They were well developed and that is what we want to concentrate on,” said Safa chief Leslie Sedibe.Expansion plansThe school – which offers grades eight to 12 – currently has 112 pupils, seven teachers and four coaches. Safa is hoping to increase the number of instructors to seven to bring the coach-player ratio to more favourable levels.Safa says it will need a total of R80-million ($11.6-million) to fully transform the academy. “We will apply for Fifa’s R3-million grant every year until the school becomes a state-of-the-art facility,” Mazibuko said.Fifa’s 2011 contribution will be used to upgrade the school’s gym, kitchen, dormitories, administration and coaches’ block, and fields. Extra computers with internet connectivity will be set up in the library to enhance the school’s academic support system.Safa plans to invite overseas football experts to hold workshops at the school to groom the budding stars and prepare them for representing South Africa in future Fifa World Cups.The county’s Department of Sport and Recreation will donate table tennis and pool tables to keep the pupils entertained off the pitch. The departments’ 2010 legacy division has also committed to establishing a medical centre at the school, which will give pupils access to a psychologist.
Volunteers joined GEM and Play Your Part to give Sparrow Schools a little facelift and a burst of fresh colour on Mandela Day. (Image:Tshepang Tlhapane)On Monday 18 June, in celebration of International Nelson Mandela Day, volunteers from across Johannesburg came together at to add a bit of colour to Sparrow Schools campuses in Melville and Sophiatown.Brand South Africa and GEM (Going the Extra Mile) Project volunteers spent 67 minutes, or more, painting walls, benches, pillars and posts all in the name of making a difference for those children with learning disabilities.“For us to take this 67 minutes, or the day, to give back makes us stop and think,” said Jackie Gallagher, the founder and general manager of the Sparrow Schools Education Trust. The schools offer students with learning difficulties a chance to continue their education.“As South Africans I think that we’ve got a lot to learn about volunteering and giving back,” said Gallagher. “South Africans are very giving people but I don’t think we’ve really formalised.“People don’t know where to go, what they can do and how they can help. There are a lot of people who want to help and I think that’s where GEM plays such a vital role so the volunteers know where they’re going, why they’re going and what the purpose is.”With so many hands present on the day to help, they made short work of painting the premises and soon had the schools looking refreshed.Volunteers from across Johannesburg joined GEM and Play Your Part to give Sparrow Schools a little face-lift and a burst of fresh colour.SPARROW SCHOOLSThey cater to students from grade one to nine at their two Johannesburg campuses. Beyond the teaching staff, Sparrow employs therapy professionals to help their students.Gallagher says that the main aim of the organisation is to provide affordable quality education to disadvantaged learners. “Originally we started working to bridge the gap between the kids in Soweto and the kids in suburb schools,” she explains.“But it has really evolved now to where we work with children with learning disabilities. On the FET (Further Education and Training) side of the school we work to assist young people to be up-skilled and have a qualification. Then we try and assist them in finding employment.”The GEM social development drive in partnership with Brand South Africa aims to get the public to donate some of their free time to help non-profit organisations across the country.GEMThe GEM social development drive in partnership with Brand South Africa aims to get the public to donate some of their free time to help non-profit organisations across the country. The partners share the goal of fostering a sense of community and making a positive difference to people’s lives.GEM offers incentives for volunteers through its app. They earn “gems” for every good deed, which can be redeemed for airtime, prepaid electricity and even movie tickets.“GEM has been amazing with the quality of volunteers,” said Gallagher. “The reason I say quality is, every single person I’ve met through GEM’s involvement so far knows why they’re here.“They know why they’re volunteering. It’s not just because they’re bored or haven’t got something to do for the day, it’s people that really want to be involved in making a difference and paying it forward.”GEM volunteers also have the option of donating their gems to the cause of their choice, helping in the day-to-day running of organisations like the Sparrow Schools Education Trust.To download the app, have a look at the GEM website for more details and links to your relevant app store.PLAY YOUR PARTAre you playing your part to help improve the lives of those around you or the environment? Do you know of anyone who has gone out of their way to help improve South Africa and its people?If so, submit your story or video to our website and let us know what you are doing to improve the country for all.