Tag: 杭州水磨

Supermen Living in Nepal

first_imgThere is a race of people at the base of Mt. Everest capable of feats that defy scientific explanation: the Sherpas.  They can carry up to twice their body weight under three hostile conditions that would wear out most of us in a minute: (1) high altitude, (2) long distance, and (3) steep inclines.  Somehow, the techniques they use and the adaptations their bodies have made from living in that environment have made them the supreme load carriers of the human world (they even beat out African women who routinely carry heavy loads on top of their head).  This was the subject of a research paper in Science this week.1  Science Now sums it up:When the going gets tough, the tough use their heads.  Porters around the world carry loads that would floor backpackers by balancing baskets atop their noggins or slinging sacks from their craniums.  Now a new study reveals that Nepalese porters do the job better than anyone else, hefting huge bundles while using relatively little energy.   (Emphasis added in all quotes.)The study, also reported by National Geographic News, found that Nepalese porters or sherpas routinely carry double what backpackers carry, under more extreme conditions, yet burn less energy:The town of Namche (at an altitude of 3500 m [11,400 ft]) near Mount Everest hosts a weekly bazaar.  Porters (Fig. 1A), predominantly ethnic Rai, Sherpa, or Tamang, typically take 7 to 9 days to travel to Namche from the Kathmandu valley.  The route, no more than a dirt footpath, covers a horizontal distance of 100 km, with total ascents (river crossings to mountain passes) of 8000 m [5 vertical miles] and total descents of 6300 m [4 vertical miles].    One day before the bazaar, we counted 545 male and 97 female porters (and 32 yaks) en route to Namche; others passed by earlier and later in the darkness.  We weighed randomly selected porters and their loads.  The men carried loads of 93 +- 36% of their Mb (mean +- SD, n = 96 male porters), whereas the women carried 66 +- 21% of their Mb (n = 17 female porters).  The youngest porter was 11 years old, and the oldest 68; the greatest load measured was 183% of Mb, and 20% of the men carried > 125% of their Mb.  More than 30 tons of material were ported to Namche that day.The researchers measured their oxygen intake and carbon dioxide output under controlled conditions, and found that their energy utilization was “far more economical than the control subjects at all loads and more economical than the African women at all except the lightest loads.”  They marveled at watching them in their normal business hauling loads around the mountains.  How they do it is a mystery:The load versus speed versus energy-cost trade-off chosen by these porters is to walk slowly for many hours each day, take frequent rests, and carry the greatest loads possible.  We observed, for example, a group of heavily loaded porters making slow headway up a steep ascent out of a river gorge.  Following whistled commands from their leader, they would take up their loads and labor uphill for no more than 15 s at a time, followed by a 45-s period of rest.  Incredibly, this group of barefoot porters was headed for Tibet, across the Nangpa glacier (altitude 5716 m [18,700 ft]), about another week’s travel beyond Namche.    So how do they do it?  They might reduce the muscular work required to carry a load or increase their overall efficiency.  The actual mechanism is unknown at this time.Many world mountain climbers brag if they make it up Everest, but these sherpas consider such feats all in a day’s work.  National Geographic News adds that after unloading and selling their goods, they race home for more, running down the mountain for two days, even poorly equipped and usually with very bad shoes or none at all.  They usually sleep on the trail, with nothing but rocks for pillows, even in below-freezing temperatures.  Some of their women bring their babies with them.    See also the National Geographic story from May 2002 about the legendary Sherpas of Mt. Everest.  Many of the famous climbing expeditions on the world’s highest mountain could not have succeeded without them, it says.1Bastien et al., “Energetics of Load Carrying in Nepalese Porters,” Science, Vol 308, Issue 5729, 1755 , 17 June 2005, [DOI: 10.1126/science.1111513].Every once in awhile we get glimpses into the suggestion that there is far more potential in the human body than most of us realize.  Those of us who have backpacked in the mountains know the strain of carrying even 40 pounds up a steep mountainside for just a couple of hours, and that at much lower elevations.  The worst feeling at a rest stop is to have some 68-year-old frail-looking grandma with a bigger pack prance right on by saying, “Mighty fine day, is it not?” as you sit there gasping for breath.    Here we see, in Nepal, a community of men, women and children that make the impossible look routine.  They don’t shop at REI and use Patagonia gear or high-tech climbing boots; they don’t compete in the Olympics or win medals, but all of us must regard the way of life of these human mountain goats with admiration.  How much stronger and smarter could our ancestors have been?  A little humility is always in order.(Visited 7 times, 1 visits today)FacebookTwitterPinterestSave分享0last_img read more

From jiggy bots to satellites for South African girls

first_img17 June 2014A group of about 20 girls from various schools in Cape Town spent this year’s Youth Day, on 16 June, building jiggy bots – tiny robots whose movements can be controlled.They were taking part in the first of a series of workshops that have been set up as an introduction to the world of electronics. The workshops will culminate in a week-long session to construct Africa’s first private satellite. The satellite will be sent to the Mojave Desert in California for launch in early 2016.The project is run by the Meta Economic Development Organisation (Medo), which hopes to build up girls’ technical skills before they matriculate. The company was motivated to launch the programme, focused on science, technology, engineering and maths, by the shortage of technical skills in the country.“The reality is, half the young women in this room, when they matriculate, are not going to have formal jobs,” Medo chief executive Judi Sandrock told The Daily Maverick. “We have to start a lot earlier.”Science and technology is for girls tooSandrock said that in 2014, only 7.5% of South Africa’s matric students passed maths with 60% and over as their overall mark for the subject. For physical science, the figure was even lower. This could lead to a big problem.Asked whether science was only for boys, participants responded in the negative. “Jeez, that’s not true,” said Grade 12 student Ovaya Mandlakhe, who goes to Matthew Goniwe Memorial High School in Khayelitsha. “At my school, girls are better [at science] than boys.”After matriculating, Ovaya would like to study medicine and become a doctor.“Anyone can do anything! There’s no such thing that boys are better than girls,” said Imaan Shaik of South Peninsula High, in Diep River.It’s aliveBuilding the robots fuelled the girls’ thirst for knowledge. “It’s amazing to see how all these bits come together to create something so technical and amazing,” said Siddiqah Latief of Pelican Park High School, near Zeekoevlei. She said she had started to love science and would like to build a career in the field.“I never thought building things could be this interesting,” said Nina-Rose Clarke, from Pinelands High School in Pinelands. “I am loving this experience. It’s so exciting to be exposed to more than just drawing and studying ideas. Constructing stuff is so much better.”A race to cap the dayA race of jiggy bots ended the workshop. Some moved in a straight line, while others staggered around. But in the end, Ovaya’s bot, named “Junior”, was victorious. “It was a shock it was so fast,” she said.Sources: News24Wire and The Daily Mavericklast_img read more

My 8th Commandment: Never Let the Client…

first_imgThere is no greater peril to a green builder/remodeler (or any builder/remodeler, for that matter) than a client who insists on having you do something outside your comfort zone. Clients ask us to do some crazy and some not-so-crazy things for any number of reasons, but trust me: As often as not, these requests are trains at the end of the tunnel, not light!Usually, these requests are just that—a request. The client saw something on TV or the Internet, and believes it makes sense for his home. He may just like the way it looks, he may believe in the advertised performance aspects of the item in question, or perhaps he had it in his last home or knows someone else who tried it and swears by it.But other times these requests are more than requests. Occasionally, the client will be adamant and insist the idea in question is a deal-breaker. That is, you do what he requests or the project is canceled and he will find someone else to do the work. Other times, his desires may be wrapped in a little subterfuge. You may also be cajoled by friendly persuasion. Or worse yet, the client may go around your back and try to wheel and deal directly with the architect, trade partner, or your superintendent to get his way.Regardless of the client’s motives or methodology, you have the responsibility to draw the line in the sand and protect yourself, your company, your family, and ultimately your client from making a decision you cannot stand behind. The key is not letting it become a zero-sum game. If you capitulate and design, buy, build, craft, install, finish, or try warranting something you haven’t done your homework on, it will come back to haunt you.This is not to say our company has not received some great ideas over the years from clients who have helped us push beyond our capabilities and work outside our comfort zone. We have before, and hopefully will get the opportunity again with each new client. The difference maker is we do our research and follow our gut instincts ahead of time. Key word here is “we.” That’s right, when asked to do something outside our processes or standard specs, we get others involved to help do the research and make the right choice. Those team members that help ensure the correct decision is made include some combination of architect, supplier, installer, superintendent, or anybody else who can help us troubleshoot the potential pitfalls.No Lone Ranger is making the call himself in these situations. A team decision helps prevent us from doing something we do not believe is right for the client, his home, and our companies. That’s my 8th Commandment for you: Never let the client dictate the scope of work outside your comfort zone.last_img read more

How to Interview for Hunters

first_imgWhen I started working in staffing, I interviewed thirty to forty people a day. I did this for almost five years. After a while, I could tell within minutes if a candidate was going to show up to work, whether or not they would succeed, or if they would accept a job and not show up at all. My intuition became very highly tuned.Hiring salespeople turned out to be more difficult. Some of my “sure bets” turned out to be duds. The worst performer I ever hired had the highest score on a fancy hiring assessment. Some I took chances on turned out to be stars. Some of the best resumes with the best pedigrees did terribly, and some hires with little to no experience crushed it. Many of the people I hired would have done incredible things if they would have worked as hard to win business and they did to win the job.Over time, I learned a very easy way to tell a hunter from the rest of the pack. I simply asked them to role play a cold call with me. I would say, “Okay, role play a cold call with me, I answer the phone and say, ‘Hello, it’s Anthony Iannarino.” The response is a clue as to whether or not the person is a hunter.Non-hunters will intellectualize the answer. They’ll describe a cold call to you. They’ll say, “Well, first I would research you to see what I could learn about your personally . . . then I’d probably connect with you on LinkedIn . . .” There is nothing wrong with doing your homework. You should look up your prospects on LinkedIn, and you should connect with them.Or they say, “When I make a cold call, what I want to do is . . . “ Most salespeople know what they should do before they make calls, even if they overdo it on the research and emails they believe “warm up” the prospect. It’s not the knowledge of how to pick up the phone and book an appointment that worries me; it’s the unwillingness.When you start a role play in an interview with a hunter, they say, “Good morning, this is . . . I am calling you today . . .” This is one way to know that the person sitting in front of you is a hunter. It doesn’t mean that you should automatically hire them, but it does give you faith that they have the confidence to prospect, and that they aren’t likely to be opportunity-starved while working for you. Essential Reading! Get my first book: The Only Sale Guide You’ll Ever Need “The USA Today bestseller by the star sales speaker and author of The Sales Blog that reveals how all salespeople can attain huge sales success through strategies backed by extensive research and experience.” Buy Nowlast_img read more

Don’t force Christmas festivities on students, Hindu Jagran Manch tells Agra schools

first_imgAfter Aligarh, the Hindu Jagran Manch in Agra has issued warnings to Christian schools against making Hindu students celebrate Christmas. The outfit said it planned to oppose Christmas celebrations throughout the country. The Agra unit chief of the Hindu Jagran Manch, Amit Chaudhary, told the media on Thursday that no Christian school should force Hindu students to celebrate Christmas. “We want to warn all Christian schools in the city that they should not even think of forcing a Christian festival on a student who is Hindu. If they do it and if we get any complaint, we will organise protests against that school,” he said just days before the celebrations. “Festival of a religion”“It is simple logic. Christian schools survive due to Hindu children. It would be unfair on their part to culturally convert them to Christianity by making them celebrate Christmas, which is a festival of a religion which is completely alien to Bharat,” he said.Mr. Chaudhary added that the HJM has chalked out a plan to monitor activities in all the schools in the city. He also said the HJM would hold protests across the city opposing celebration of Christmas by the people. “Hindus celebrating Christmas is like being converted to Christanity. We will raise awareness among Hindus against celebrating a festival which belongs to an alien culture,” he added. The threat from the HJM unit in Agra comes days after its Aligarh unit issued a similar warning to schools in Aligarh.last_img read more

Claw foot

first_imgDefinitionClaw foot is a deformity of the foot. The toejoint nearest the ankle is bent upward and the other toe joints are bent downward. The toe looks like a claw.Alternative NamesClaw toesConsiderationsClaw toes present at birth (congenital). Thecondition can also can develop later in life because of other disorders (acquired). Claw toes may be caused by a nerve problem in the legs ora spinal cord problem. The cause is unknown in many cases.Claw toes are not usually harmful in themselves.They may be the first sign of a more serious disease of the nervous system.Claw toes may cause pain and lead tocalluseson the top of the toe over the first joint, but may also be painless. The condition may createproblems wearing shoes.Common CausesAnkle fractures or surgeryCerebral palsyCharcot-Marie-Tooth diseaseOther brain and nervous system disordersRheumatoid arthritisCall your health care provider ifCall yourhealth care provider if you think you may be getting claw toes.What to expect at your health care providers officeThe health care provider will do an exam tocheck for muscle, nerve, and spine problems. The physical examination will probably include extra attention to the feet and hands.You will be asked questions about your condition such as:When did you first notice this?Is it getting worse?Does it affect both feet?Do you have other symptoms at the same time?Do you have any abnormal feelingsin your feet?Do any other family members have the same condition?The abnormal shape of the toe can increase pressure and cause calluses or ulcers on your toes. You may need to wear special shoes to ease pressure. Claw toes can also be treated surgically.advertisementReferencesWang D. Claw toe. In: Frontera WR, Silver JK, eds. Essentials of Physical Medicine and Rehabilitation. 2nd ed. Philadelphia, Pa: Saunders Elsevier;2008:chap 78.Review Date:1/17/2013Reviewed By:C. Benjamin Ma, MD, Assistant Professor, Chief, Sports Medicine and Shoulder Service, UCSF Department of Orthopaedic Surgery. Also reviewed by A.D.A.M. Health Solutions, Ebix, Inc., Editorial Team: David Zieve, MD, MHA, David R. Eltz, Stephanie Slon, and Nissi Wanglast_img read more