附件为作者撰写的 metacalor 程序。该程序可以被用来计算荟萃分析中最为频繁使用的效应值 OR, RR, 和 RD 以及他们相应的自然对数值，用户可以任意指定的置信区间，这些数据在进行荟萃分析（元分析,meta分析）时是极为有用的。 /* this command is only devised for binary data: where group1 is the experimental group and gourp2 is the control group. The syntax is metacalor #events_group1 #nonevents_group1 #events_group2 #nonevents_group2 EX：metacalor tdeath tnodeath cdeath cnodeath,or level(90)*/ 下载地址： metacalor.ado
Hello everyone, I would like to invite you visit www.open-ocean.org ,a community outreach website for oceanography and related fields that I've created together with a web programmer friend of mine, Ryan Avery. This website ap plies "Facebook" or blog-style social networking technology to let scientists communicate basic ideas directly to the public. I believe it is important for those of us who study the Earth to tell people about our work. Otherwise, our efforts will create new knowledge but will not impact people's feelings . Fellow researchers like yourself would be very welcome and encouraged to sign up and contribute. You can acknowledge your funding agency and grant number, thus having a quantifiable outreach activity to show program managers.You can also include optional links to animations as well as to a project page. To make life easy, I have been trying to put my college experience in journalism to good use, by working with the authors to help write captions for the general public (if so desired). I hope you enjoy it. Comments, feedback, and suggestions are very welcome. Best regards, --- Jonathan
Here is the link: http://peakoil.com/consumption/the-corn-ultimatum-how-long-can-americans-keep-burning-one-sixth-the-world%E2%80%99s-corn-supply-in-our-cars/ The Corn Ultimatum: How long can Americans keep burning one sixth the world’s corn supply in our cars? Bill Clinton warns: Too much ethanol could lead to food riots I am not a fan of our corn ethanol policy as I made clear made clear during the last food crisis (see “ The Fuel on the Hill ” and “ Can words describe how bad corn ethanol is? ” and “ Let them eat biofuels! “). In a world of blatantly increasing food insecurity — driven by population, dietary trends, rising oil prices, and growing climate instability — America’s policy of burning one third of our corn crop in our engines (soon to be 37% or more) is becoming increasingly untenable, if not unconscionable. I was glad to see former Pres. Bill Clinton start talking about this in a Washington Post piece headlined, “ Clinton: Too much ethanol could lead to food riots ” — though I tend to see the world’s increasing use of crops for fuel as an underlying cause for growing food insecurity, something that makes the whole food system more brittle and thus more vulnerable to triggering events, like once in1000100 year droughts and once in 500 year floods, which is to say climate instability (see WashPost , Lester Brown explain how extreme weather, climate change drive record food prices ). If you want to understand why it will be politically difficult to roll back US ethanol production to saner levels, Reuters has a good article, “ Analysis: In food vs fuel debate, U.S. resolute on ethanol .” Yet it is that piece which notes, “U.S. ethanol production this year will consume 15 percent of the world’s corn supply, up from 10 percent in 2008.” … As an aside, conservatives like to claim that it is environmentalists who gave us our current biofuels policy, but in fact I never have met an environmentalist who thought we should mandate anywhere near the current amount of corn ethanol. The only reason environmentalists and clean energy advocates even tolerated energy deals with corn ethanol mandates is the hope that jumpstarting the infrastructure for corn ethanol would pave the way for next-generation cellulosic ethanol. That turned out to be a mistake (see “ Are biofuels a core climate solution? “). We have gone far beyond what is tenable. Yes, peak oil (and the energy-intensive nature of food production) means that oil prices will rise in tandem with food prices, thus increasing the profitability of biofuels. And yes, we are a rich country, the breadbasket of the world, politically far more impervious to higher food prices than higher oil prices. But as population grows, developing countries’ diets change, and the extreme weather of the last year increasingly becomes the norm in a globally warmed world, food insecurity will grow and our biofuels policy will, inevitably, collapse. It must. Eat me, eat me, eat me. Don't just burn me!
"Life is a journey, not a destination." "It is not the length of life, but the depth." "The purpose of life is not to be happy. It is to be useful, to be honorable, to be compassionate, to have it make some difference that you have lived and lived well." "To laugh often and much; to win the respect of intelligent people and the affection of children; to earn the appreciation of honest critics and to endure the betrayal of false friends. To appreciate beauty; to find the best in others; to leave the world a bit better whether by a healthy child, a garden patch, or a redeemed social condition; to know that even one life has breathed easier because you have lived. This is to have succeeded." "Finish every day and be done with it. You have done what you could; some blunders and absurdities no doubt crept in; forget them as soon as you can. Tomorrow is a new day; you shall begin it serenely and with too high a spirit to be encumbered with your old nonsense." "Be silly. Be honest. Be kind." Find out more by clicking Ralph Waldo Emerson "The Complete Works of Ralph Waldo Emerson" can be found by clicking http://www.rwe.org/
标签: meta
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