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And one thing I want to tell you to start out with is something about this c h 3 group here.
有一点需要告诉大家的是,从这个一个碳原子和三个氢原子的组合开始。
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And using the text plus these archive notes,I think you will be able to piece together what you need.
使用这个课本，再加上存档笔记，我想,你们已经能组合出你们需要的了。
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This is Young-Hae Chang Heavy Industries, which is a collaboration of an American man and a Korean woman who create online digital artworks.
这个是由，张海英重工业，制作的，这是一个美国人和,一个韩国女人一起合作的在线数字艺术的组合。
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Suppose you could find 10,000 independent assets, then you could drive the uncertainty about the portfolio practically to 0.
假设你能找到一万项相互独立的资产，那么你就可以将这个投资组合的风险,降到几乎为零。
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The fact that I haven't seen this particular combination of words " isn't enough to make it interesting."
尽管我没见过这个特别的文字组合,但不足以让这个游戏变得有趣“
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And I would be able to simply bury away the details of how those other instances are created from how I want to use them by simply calling methods on the classes.
也就是一些线段的组合,我还可以把怎么实现那些,实例的细节包装起来,把它和调用实例分开来,我们下次还会接着讲这个。
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So, let's think of all of the combinations that we could have in terms of this molecule.
那么，让我们想一想这个分子,所有可能的组合方式。
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In the meantime, what Saussure is doing with this relationship above and below the line is, he is saying that there is an arbitrary relationship between the concept and the sound image.
同时，索绪尔觉得这组关系,也就是线上和线下的这个组合，他说，这是一个任意的组合,在事物和声音形象之间。
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All you had to know is the word "Dog" and the plural morpheme 's' and you could put them together to create a word.
你只需知道"狗"这个词以,及复数语素'们',你可以将它们组合在一起来创造出一个词
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This list is sorted, this list is sorted but they could be intermingled.
这个序列是有序的，这个也是有序的,可以将它们组合起来。
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This graph shows some of it as well, but in this case for children, in the left hand side you see the ideal composition of the diet according to government recommendations that the diet should be partitioned in this way.
这个图表也揭示了一些类似的事实,不过是在儿童饮食中的情况,在左边你看到的是理想的饮食组合,按照政府的推荐食谱,食物应该这样搭配
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This one cell, this one fertilized cell which is unique because it's the - its chromosome contains the combination of the sperm and the egg, develops into an embryo and then on birth develops into a human.
这个受精卵,是独一无二的,因为它的染色体,包含了精子和卵子的组合,并由此发育成为一个胚胎,之后形成一个人类个体
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That's got the lowest possible standard deviation of expected return and that's 25% stocks and 75% bonds with this sample period.
这个组合预期回报的标准差最小,在这一点上，投资组合,由25%的股票和75%的债券构成。
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Somebody else might say, well I want to just hold this point, I want to hold the tangency portfolio.
而另外的某些人可能会说，我就想按这个点的比例来持有投资，我想持有切线投资组合。
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This is a special case, though, because I've assumed that the assets are independent of each other, which isn't usually the case.
这是一个特例，因为我假设了,这个投资组合里的资产是相互独立的，但现实中通常都不是这样的。
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I am going to sum up the atomic orbitals that go into the molecular orbital, and they are going to have some coefficients.
我准备将原子轨道组合起来,进行分子轨道计算，这个过程还需添加一些系数。
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Probably a more important test of the portfolio was what happened around the collapse of the Internet bubble in 2000.
对这个组合更严峻的考验可能是,2000年那场互联网泡沫的破裂
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The pink line here is the efficient portfolio frontier when we have only stocks and bonds to invest.
这条粉色曲线就是有效边界,这个投资组合只包括了股票和债券。
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I want now to carry that forward into something a little bit more focused on the portfolio problem.
现在从这个基础上拓展一下,更侧重于投资组合方面的问题。
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.. If you can find assets that all have-- that are all independent of each other, you can reduce the variance of the portfolio very far.
如果你能找到这样的一些资产-,一些相互独立的资产，就能很大程度上缩小这个投资组合的方差。
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But, in between, if some other number, it'll be some blend of the--mean and variance of--the portfolio will be some blend of the mean and variance of the two assets.
但如果是在0和1之间的其他数值，这个投资组合的均值和方差将会是,两项资产各自的均值和方差的综合结果。
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What is the tangency portfolio in this case?
这个案例中的切线投资组合又是什么呢？
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If you agree with my estimates, then you should do this as an investor, you should hold only some mixture of this tangency portfolio, which is 9% oil, 27% stocks, and 64% bonds.
如果你赞同我的估计值，那么作为一个投资者的话你应该这么做，你应该只持有,符合这个切线投资组合比例的投资，即9%的石油，27%的股票，和64%的债券。
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Now, I want to talk about forming a portfolio where the assets are not independent of each other, but are correlated with each other.
现在我要建立这样的一个投资组合,在这个组合里各项资产并不是相互独立的，而是相互关联的。
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With non-participating--with participating, you are participating in the portfolio outcome that the insurance company is experiencing, so you have some uncertainty about your cash value.
所谓参与式分红保险,是指你的收益来自某个投资组合收益,而这个投资组合是由保险公司来管理的,所以保单的现金价值是不确定的
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This is a portfolio, which has all oil and stocks and it has no bonds.
这个投资组合，包括有石油，股票，没有债券。
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Because the square root of 10,000 is 100, whatever the standard deviation of the portfolio is, you would divide it by 100 and it would become really small.
因为一万的平方根是一百，无论这个投资组合的标准差是多大，当除以100后就都变得很小很小了。
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What we want to do now is compute the mean and variance of the portfolio-- or the mean and standard deviation, since standard deviation is the square root of the variance-- for different combinations of the portfolios.
我们现在要做的是,计算这个投资组合的均值和方差-,或者均值和标准差，因为标准差的平方就等于方差-,这对任何投资组合都是一样的。
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But I want to pause for a moment and note that this assumption that the way to think about the value of the combination as just a matter of adding the goodness of life and the badness of death and just summing them that way-- that may not be right.
但我想暂停一会并指出,这个用加上生命的好处,和死亡那个的坏处然后求和的方式,去考虑这个组合的价值的假设-,可能并不是正确的。
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It exists in a double stranded form where every strand is matched by its complement.
这种碱基配对存在于DNA双链中,每条单链都与其互补链,通过这个原则配对组合
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