We usually walk or run. When walking, we roll from heel to arch to toe and rock our arms back and forth. When running, we bounce up and down slightly while pumping our arms. Did you know that many other gaits are possible? Why do we use only two? A team of specialists in bio-robotics at Cornell decided to apply a mathematical model to human foot travel. Like true scientists, they asked questions about the obvious:Why do people not walk or even run with a smooth level gait, like a waiter holding two cups brim-full of boiling coffee? Why do people select walking and running from the other possibilities? We address such questions by modelling a person as a machine describable with the equations of newtonian mechanics. The basic approximations are: first, that humans have compact bodies and light legs; second, that gait choice is based on energy optimization; and third, that energy cost is proportional to muscle work. We use a simplification of previous models, perhaps the simplest mechanical model that is capable of exhibiting a broad range of gaits that includes walking and running. Although the model is a mechanical abstraction that is not physically realizable, it is subject to the laws of physics. Because of its simplicity, the model is amenable to interpretation. It can also be studied with exhaustive and accurate simulation experiments, far beyond what is possible with human subjects. (Emphasis added in all quotes.)So, putting the model in the computer and cranking out the equations, they discovered that these two gaits are the most energy efficient for beings our size and shape. Their only mention of evolution referred to the fact that, in their model, running did not require elastic spring energy: “human ancestors could have started to run before the modern human long Achilles tendon was fully evolved.” Their derivations were published in Nature.11Srinivasan and Ruina, “Computer optimization of a minimal biped model discovers walking and running,” Nature 439, 72-75 (5 January 2006) | doi:10.1038/nature04113.That statement merely assumes evolution, again – the mortal sin of Darwinists. “Before the Achilles tendon was fully evolved,” right. Since evolution is already a fact to these dogmatists, it must make perfect sense. After all, running in circles in a big enough squirrel cage provides the illusion of making progress down a straight track. Human bodies can be treated like physical objects and described according to physical laws. Drop yours out a window and you will accelerate at thirty-two feet per second squared till reaching terminal velocity. The crater you formed can be measured, and the force you generated on impact can be calculated. The mechanics of running can be described, quantified, and modeled (see 11/18/2004). This is all wonderful and useful, but says nothing about how humans, and these mechanical abilities, arose. Nor does it say how we should use them. Newton needed to look elsewhere for those laws: Walk circumspectly; do not run in vain.(Visited 13 times, 1 visits today)FacebookTwitterPinterestSave分享0
ShareEmailPrint To learn more, read: Posted on September 14, 2010August 17, 2016Click to share on Facebook (Opens in new window)Click to share on Twitter (Opens in new window)Click to share on LinkedIn (Opens in new window)Click to share on Reddit (Opens in new window)Click to email this to a friend (Opens in new window)Click to print (Opens in new window)Marie Stopes International and EngenderHealth invite you to view a panel discussion entitled, “Innovations and Opportunities to Achieve MDG 5”. Panelists include Pam Barnes (President, EngenderHealth), Michael Holscher (Senior VP, Marie Stopes), Monica Greene (Clinical Director, Marie Stopes) and Wendy Trumbull (Director of International Advocacy, (Population Action International).Join us for this session in the lead-up to the UN General Assembly Special Session. Key opportunities and challenges in scaling up family planning and reproductive health services are explored. View the live streaming video today at 2:30pm EST here.For more information go to www.engenderhealth.orgShare this:
The Australian Menâ€™s and Womenâ€™s squads will train in Sydney this weekend as they commence the new cycle in the lead up to the 2016 Trans Tasman Series. The squads will train together for the first time since their 2015 Touch World Cup wins in May last year, with the Mixed Open squad to train next weekend. The athletes have a busy start to 2016, with several playing in the TFA All Stars match in a fortnight, as well as the 2016 Harvey Norman National Touch League in March followed by the 2016 Trans Tasman Series in late April in Auckland. Stay tuned to the Touch Football Australia website and social media channels over the weekend for updates and contributions from our Camp Correspondents, as well as Tour Diaries next week:Website â€“ www.touchfootball.com.auFacebook â€“ www.facebook.com/touchfootballaustraliaTwitter â€“ www.twitter.com/touchfootyaus Instagram â€“ www.instagram.com/touchfootballaustralia Related LinksAussies in Camp
Emery adamant Arsenal will be title challengerby Paul Vegas4 days agoSend to a friendShare the loveUnai Emery is adamant his Arsenal can be a title challenger.Victory over Sheffield United at at Bramall Lane on Monday night would take Arsenal up to third, despite their poor start to the season. “We can be better in the table, we can play better each match,” Emery said.”I am very happy with the club. I am really happy with the players. “The last two, three, four weeks, every player — and Mesut Ozil — are working very well. We can be positive and can think we are going to do something important this year.” About the authorPaul VegasShare the loveHave your say
FORT ST. JOHN, B.C. – The Peace River North School Board discussed a plan for the opening ceremonies of the new Margaret ‘Ma’ Murray School at a meeting on Monday.The Board pitched the idea of holding the opening ceremony on August 27th, but that could be pushed back until September if Board Trustees were not able to attend. The School Board will also take suggestions from the City of Fort St. John, the Ministry of Education, and BC Hydro on when they think the ceremony should take place, as all three organizations made sizable contributions to the new school.Peace River North MLA Dan Davies and Peace River South MLA Mike Bernier have agreed to tour the school on June 12th, after which they will take part in a meeting with School Board members. The Board also briefly discussed community facilities such as a daycare that would be incorporated in another new Elementary school that is proposed for the City’s Northeast side. Board Chair Erin Davies said that the Ministry of Education has been pushing to have a daycare included in the new school, but has not volunteered to fund it, which has raised questions from the Board. Funding for the daycare will be brought up during the June 12th meeting with the two MLA’s.
CALGARY, A.B. – The National Energy Board says it has approved modified plans for the Burnaby Terminal of the Trans Mountain pipeline project, clearing a final regulatory hurdle for construction to start.The regulator says the approved variance application will significantly improve safety at the terminal, which is the end point for the controversial pipeline the federal government has agreed to buy as part of a $4.5-billion acquisition of Kinder Morgan Canada’s core assets.The new plans reduce the diameter of five of the 14 tanks and the overall capacity of the facilities by about 320,000 barrels, increase the space between the tanks, and reconfigure the secondary containment system at the tank farm to reduce fire risk. The NEB says its approval of the variance and Kinder Morgan Canada’s fulfillment of certain conditions allows it to begin construction at the Burnaby Terminal, subject to any other permits or authorizations which may be required.Burnaby, in a submission to the NEB, said the company failed to consult with the city, and that the modified plans don’t address its significant concerns on boil-over, vapour cloud explosion, and other risks.The Burnaby site has been a focal point of opposition to the project as protesters raise concerns about potential spill damage and emissions increases the pipeline will allow.(THE CANADIAN PRESS)
Kolkata: A Pharmaco vigilance cell on Ayurveda has been thrown open at the Central Ayurveda Research Institute for Drug Development (CARIDD) in the city to directly receive complaints from the patients in regard to various Ayurveda drugs.To strengthen knowledge and regular practices about the safety and efficacy of the Ayurveda medicines, the Bengal chapter of the National Ayurveda Studends and Youth Association(NASYA) in collaboration with the CARIDD under CCRAS, Ministry of AYUSH has come up with the unique initiative A seminar was recently organised on Pharmaco vigilance in the city by the All India Institute for Ayurveda along with NASYA and CARIDD when lot of issues relating to the standard of Ayurvedic drugs were discussed. The programme was inaugurated by Dr V Subhos, assistant director (Ayurveda), CARIDD, Kolkata, Dr Prasanta Kumar Sarkar, director , State Medicinal Plant Board and Dr Tapas Kumar Mondal, principal superintendent, Rajib Gandhi memorial Ayurveda College and hospital. Dr Achintya Mitra, research officer (Ayurveda), CARIDD also graced the occasion. The patients can directly visit the cell if they have any issues regarding quality of Ayurveda drugs. There are also plans to start online platform where the patients can lodge their complaints against the medicines prepared by any particular company. If the patients face any side effects after consuming such medicines they can register the complaint. The competent authorities will conduct the probe and will also examine the quality of the medicine. Dr Prasanta Kumar Sarkar delivered a lecture on “Concept and need of Pharmaco vigilance in AYUSH System” during the seminar. Dr Tripathi, professor and head, Dept of Clinical Pharmacology, Calcutta School of Tropical Medicine also delivered his lecture on the topics —”Pharmaco vigilance of Ayurveda, Sidhha, Unani and Homeopathy medicines — program implementation, procedures and operational issues.” Dr Kesab Lal Pradhan, Vice President of NASYA, West Bengal said: “We welcome the move taken by the Union Ayush Ministry to ensure the quality of Ayurveda drugs.”
Sidi Ifni- According to the daily Al Akhbar newspaper, environmentalists are warning against the prevalent pollution in Casablanca. They are now tolling an alarm bell for the government to intervene.In addition to the notorious reputation that Casablanca has for its dirtiness, city dwellers are complaining about several pollution-borne diseases, such as asthma, eye allergies, Tuberculosis, and respiration problems.Casablanca does not only lack a solid infrastructure and good management, but it also threatens the city dwellers’ health. In an interview, Mohamed Benjelloun, an engineer and environment expert, stated that about 50 % of people living in Casablanca are diagnosed with health problems resulting from dirtiness, rubbish, fume emissions, and debris.“There is at least one sick person in every house in Casablanca. The disease is caused by atmosphere pollution and chemical emissions. If untreated, such health problems can cause much harm,” claims Benjelloun, as quoted by Al Akhbar.“Drinking water”, Benjelloun added, “is in jeopardy, particularly in the presence of trash inside rainwater canals.” Mismanagement and lack of inspection, the expert environmental engineer underscored, are behind the colossal polluted areas of this economic capital.“Treating rubbish and disposing [it] needs scientific studies in order to come up with comprehensive solutions to the pollution that grows more rampant every day in this city,” noted health expert Ghouti Al Aghdaf.According to Ghouti, high density has led the city dwellers to develop serious health problems.“Pollution also includes noise, hearing problems, and polluted air,” Ghouti added.Every year, the majority of the 28 thousand reported cases are found in Casablanca, reported the daily Al Akhbar.“Factories are to blame for what is befalling our city, “ Hicham Himdi, Casablanca resident, told MWN. In contrast, some environmental experts attribute the problem of pollution to the absence of strict laws and inspection committees that can limit the spread of this phenomenon. Others state that foreign factories aggravate the situation by evading fines through corruption. It is worth noting that King Mohamed VI has already drawn Moroccans’ attention in one of his speeches regarding the dirtiness and mismanagement of the economic capital of Morocco, Casablanca.
Twenty-six Buckeyes will represent Ohio State track and field at the NCAA East Regional Preliminaries this weekend in Greensboro, N.C. The field of 13 men and 13 women will compete against teams from the Big Ten, ACC, SEC, and Big East schools. There are five All-Americans representing the Buckeyes, including four-time All-American Jeff See. Joining See are Thomas Murdaugh and Matt DeChant. Christina Manning, Letecia Wright and Shaniqua McGinnis round out the top of the pack for the women. Top qualifying times from the East and West preliminaries will compete at the NCAA Outdoor Championships in Eugene, Ore., June 9 to 12.The ACC/Big Ten Women’s Basketball Challenge pairings have been set and OSU hosts the Virginia Cavaliers on Thursday, Dec. 2. The challenge pairs 11 teams from each conference together. Both conferences have historically been known as women’s basketball powerhouses. In the challenge’s fourth year, the Big Ten hopes to break a pattern of defeat, as the ACC has won the challenge the past three years. The Buckeyes won their sixth-consecutive Big Ten title in 2010 and return all five starters, including two-time All-American Jantel Lavender. The women’s ACC/Big Ten Challenge follows the men’s and will take place across two days on Wednesday, Dec. 1 and Thursday, Dec. 2. The No. 4 men’s tennis team ended its team portion of the NCAA Championships after falling in the quarterfinals 4-0 to No. 5 USC on Sunday. It was deja vu for the Buckeyes, as they lost to the Trojans in the 2009 NCAA Championship, the program’s only appearance in the finals. Senior co-captains Justin Kronauge and Mike O’Connell hold the record for the most all-time wins with 164, as well as most NCAA all-time wins with 17. Big Ten Athlete of the Year Chase Buchanan and Kronauge are set to compete in the NCAA Singles Championships, and Buchanan and Dino Marcan will compete in the doubles point.The rowing team travels to Gold River, Calif., to compete for the 11th-consecutive season in the 2010 NCAA Championships. The field is made up of 16 teams, four of which are from the Big Ten. The Buckeyes will compete with two boats of eight rowers for the First and Second Varsity Eights and one boat of four rowers for the First Varsity Four. Washington State University hosts the Championships on Lake Natoma from May 28 to 30.
Creighton head coach Greg McDermott embraces his son and tournament Most Outstanding Player after their Missouri Valley Conference championship game against Illinois State on March 4, 2012, in St. Louis, Missouri. Credit: Courtesy of TNSComing just two days after the end of the Thad Matta era at Ohio State, ESPN’s Jeff Goodman reported the Buckeyes have offered Creighton head coach Greg McDermott the head coaching position. Ohio State has offered job to Creighton’s Greg McDermott, source told ESPN. Two sides met tonight.— Jeff Goodman (@GoodmanESPN) June 8, 2017McDermott, 52, has 23 years of head coaching experience at the collegiate level under his belt, the latest seven seasons coming at Creighton where he has compiled a 165-81 with the Bluejays, 86-52 since the team joined the Big East in 2013. He is in the seventh season of a 10-year deal worth $1.1 million base salary with the team. Under his leadership, Creighton won a pair of Missouri Valley Conference tournament titles in 2012 and 2013, and a regular season title in the latter season. His Bluejay teams reached the NCAA tournament in four of his seven seasons, though they never made it past the round of 32.Prior to his time with the Bluejays, he served also as head coach at Iowa State, Northern Iowa, North Dakota State and Wayne State. In his 16 seasons with those teams, he went a combined 279-224.Though he largely struggled in his time with Iowa State, he led Northern Iowa to NCAA tournament appearances in 2004, 2005 and 2006, and a Missouri Valley Conference tournament title in 2004.