m****z
发帖数: 978 | 1 我一直没练过OPEN TURN,就练了FLIP TURN.那天重温Sphere的视频，是发现Sphere兄转
身特自如，特快，还不是FLIP TURN. 感觉他就是用的Open TURN.
我那天也练练，400Y FLIP TURN很痛苦。
STREAMLINE 重要,世人皆知。转身STREAMLINE，我感觉是重中之重,因为速度最快。
“有几个示范者手没有前伸到位就匆忙蹬壁" |
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j**n
发帖数: 13789 | 4 The Sun represents the individualizing principle in nature. It is the ego or
nucleus of any being and the determinant of its identity. The inherent
purpose of each separate entity is to radiate light and power just as the
solar orb illumines the vault of the sky. It has been said that God is a
circle whose center is everywhere and whose periphery is nowhere. Within
this boundless sphere of potential existence every animate unit is a
miniature Sun or center of creative self-expression.
An ancient... 阅读全帖 |
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l*****O
发帖数: 402 | 6 How to grow old By Bertrand Russell
In spite of the title, this article will really be on how not to grow old,
which, at my time of life, is a much more important subject. My first advice
would be to choose your ancestors carefully. Although both my parents died
young, I have done well in this respect as regards my other ancestors. My
maternal grandfather, it is true, was cut off in the flower of his youth at
the age of sixty-seven, but my other three grandparents all lived to be over
eighty. Of... 阅读全帖 |
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l*****O
发帖数: 402 | 7 How to grow old By Bertrand Russell
In spite of the title, this article will really be on how not to grow old,
which, at my time of life, is a much more important subject. My first advice
would be to choose your ancestors carefully. Although both my parents died
young, I have done well in this respect as regards my other ancestors. My
maternal grandfather, it is true, was cut off in the flower of his youth at
the age of sixty-seven, but my other three grandparents all lived to be over
eighty. Of... 阅读全帖 |
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l*****O
发帖数: 402 | 8 How to grow old By Bertrand Russell
In spite of the title, this article will really be on how not to grow old,
which, at my time of life, is a much more important subject. My first advice
would be to choose your ancestors carefully. Although both my parents died
young, I have done well in this respect as regards my other ancestors. My
maternal grandfather, it is true, was cut off in the flower of his youth at
the age of sixty-seven, but my other three grandparents all lived to be over
eighty. Of... 阅读全帖 |
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f**s
发帖数: 968 | 9 链接在此：
http://www.kenrockwell.com/tech/8mm-f35.htm
8mm f/3.5 Fisheye
Pro-Optic, Samyang, Rokinon, Bower &c. (2009-)
© 2010 KenRockwell.com. All rights reserved.
Intro Specs Performance Compared Recommendations
8mm f/3.5 Fisheye, Pro-Optic Nikon AI-s version. enlarge. ($290, Korean, no
filters, 13.8 oz./391g). This one came from this link to it at Adorama (also
specifically in Nikon, Canon EOS, Pentax/Samsung and Minolta Maxxum/Sony
mounts). It also comes branded as Bower, also specif... 阅读全帖 |
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a******o
发帖数: 16625 | 10 【 以下文字转载自 Military 讨论区 】
发信人: LindaLiao (梅影清吟), 信区: Military
标 题: 世界历史上最有成就的五十名物理学家。
发信站: BBS 未名空间站 (Sun Apr 8 17:18:35 2012, 美东)
1. Isaac Newton - English. Quantified and Qualified laws of motion and
gravity. Invented the reflecting telescope. Explained the concept of light
dispersion and co-invented the Calculus.
2. Albert Einstein - German/Swiss/American - Developed Theories of Special
and General Relativity. Described Brownian Motion. Nobel Prize winner for
his work on the photoelectric ef... 阅读全帖 |
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l*****a
发帖数: 38403 | 11 【 以下文字转载自 TrustInJesus 讨论区 】
发信人: snoppyfirst (snoppy), 信区: TrustInJesus
标 题: Re: 有人笑神坐在地球大圈之上。。。
发信站: BBS 未名空间站 (Sat Nov 16 21:34:54 2013, 美东)
我从来都没说Sphere = Circle.
我说的是Sphere is made out of Circles。
那好，我就要你简单的回我一句。
【以赛亚书40：22 神坐在地球大圈之上、地上的居民好像蝗虫．他铺
张穹苍如幔子、展开诸天如可住的帐棚。】
看看以下的图，就简单的回我一句。
根据以赛亚书40：22，神有没有坐在地球大圈之上？
1）Yes 2) No |
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E*****m
发帖数: 25615 | 13 這就是溫和基督徒的可惡之處, 他們自己倒未必
有害自己或他人, 可是他們就是極端教徒的
human shield， 幫著極品擋住批評。
http://www.beliefnet.com/Faiths/Secular-Philosophies/The-Proble
The Problem with Religious Moderates
We can no longer afford the luxury of political correctness. When religion
causes violence, its root claims must be challenged.
BY: Sam Harris
Email
Share
Comments (0)
Reprinted from The End of Faith: Religion, Terror, and the Future of Reason
with permission of W.W. Norton & Company, Inc.
People of faith fall on a continuum: som... 阅读全帖 |
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m****r
发帖数: 1904 | 14 一个姐妹的回答
“There was a question from readers many years ago that addressed the idea
of flat, but round. (67/11/1 wt) It went to Job 22:14, where the same
Hebrew word, chugh, is used, but translated "Vault". A vault is
hemispherical, like 1/2 a globe. The earth has its other hemisphere's half
below where we stand, making a 3D circle. Back to Isaiah 40:22: Moffatt
translation says "He sits over the round earth", and the Catholic Douay
Version says, "It is he that sittith upon the globe of the ... 阅读全帖 |
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z****u
发帖数: 3461 | 15 http://acg.178.com/201112/117311167723.html
2011-12-08 10:26:07 来源：腾讯动漫 作者：本田白白
由ORICON BiZ online统计并发表的2011年动画音乐销售大赏，已于日前公布出来
。大赏分为声优、动画主题曲、角色歌和动画歌曲专辑四个部门，下面就让我们一一看
过：
首先，声优部门获得第一位的是去年的冠军水树奈奈，她今年也凭借8.2亿日元的
绝好成绩荣登销售榜的榜首。其中尤其以在今年10月份发售的BD大碟《NANA MIZUKI
LIVE GRACE-ORCHESTRA》为甚，当时就以周间销量2.2万张的记录获得了公信榜周间销
量排行榜第一位，仅此一张碟累积销售额就达到了4亿日元。排名第二位的是大人气声
优组合sphere，她们今年的累积销量达到了4.2亿元。另外，田村由佳利、丰崎爱生和
平野绫分别以1.7亿元、1.4亿元和 1.2亿元的成绩排在了第三~五位。
动画主题曲部门获得冠军的则是由关八演唱的TV动画《蜡笔小新》剧场版的主题曲
目《T.W.L/YELLOW PANSY STREET》，今年销售量达到... 阅读全帖 |
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L******s
发帖数: 2349 | 16 Zetman第一集早出来了啊，我看了，还是很不错的。
夏色奇迹，硬着头皮看完第一集，这个是Sphere 2D化吗？真的是做各种萝卜的Sunrise
做的吗？作画很不错，Sphere的歌也是真心赞，不过故事很没劲。 |
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R*o
发帖数: 3781 | 17 6:5 In v. 5 Paul further explains (gavr, gar) how it is that we can walk in
new life. We do so because of the ongoing effects of our participation in th
e death of Christ and our current participation in the resurrection of Chris
t. The future tense, “we will certainly also be united,” refers not to the
eschatological future (cf. John 5:28-29), but rather to the future with res
pect to the logic of the process of salvation. First, we are reckoned dead w
ith Christ, then we are reckoned to partic... 阅读全帖 |
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R*o
发帖数: 3781 | 18 6:8-10 The point of vv. 8-9 is this: if we have died with Christ we will cer
tainly live with him since he died to death once and for all, it can, theref
ore, never hold sway over him again and subsequently he lives to God.
What does Paul mean when he says, “we…will live” with him (v. 8)? Is he t
hinking about our present experience as Christians, or is he thinking about
the future? This is essentially the same question we faced in v. 5. Some sch
olars argue that the future tense points to the t... 阅读全帖 |
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s*********t
发帖数: 4253 | 19 我从来都没说Sphere = Circle.
我说的是Sphere is made out of Circles。
那好，我就要你简单的回我一句。
【以赛亚书40：22 神坐在地球大圈之上、地上的居民好像蝗虫．他铺
张穹苍如幔子、展开诸天如可住的帐棚。】
看看以下的图，就简单的回我一句。
根据以赛亚书40：22，神有没有坐在地球大圈之上？
1）Yes 2) No |
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j*******7
发帖数: 6300 | 20 We live in a physical world with its four known space-time dimensions of
length, width, height (or depth) and time. However, God dwells in a
different dimension—the spirit realm—beyond the perception of our physical
senses. It’s not that God isn’t real; it’s a matter of His not being
limited by the physical laws and dimensions that govern our world (Isaiah 57
:15). Knowing that “God is spirit” (John 4:24), what is His relationship
to time?
In Psalm 90:4, Moses used a simple yet profound analogy ... 阅读全帖 |
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S**U
发帖数: 7025 | 21 Sam Harris 的文章，可以用来检视自己的信仰。不同信仰间的互相尊重，与理性讨论、检验信仰，不应当是互斥的。
【 以下文字转载自 Belief 讨论区 】
发信人: Eloihim (真神), 信区: Belief
标 题: Re: 宗教的疗效
发信站: BBS 未名空间站 (Thu May 5 12:06:23 2011, 美东)
这就是温和基督徒的可恶之处, 他们自己倒未必
有害自己或他人, 可是他们就是极端教徒的
human shield， 帮著极品挡住批评。
http://www.beliefnet.com/Faiths/Secular-Philosophies/The-Proble
The Problem with Religious Moderates
We can no longer afford the luxury of political correctness. When religion
causes violence, its root claims must be challenged.
BY: Sam Harris
Email
Share
Com... 阅读全帖 |
|
Y**u
发帖数: 5466 | 22 ☆─────────────────────────────────────☆
SeeU (See you) 于 (Fri May 6 02:01:10 2011, 美东) 提到:
Sam Harris 的文章，可以用来检视自己的信仰。不同信仰间的互相尊重，与理性讨论、检验信仰，不应当是互斥的。
发信人: Eloihim (真神), 信区: Belief
标 题: Re: 宗教的疗效
发信站: BBS 未名空间站 (Thu May 5 12:06:23 2011, 美东)
这就是温和基督徒的可恶之处, 他们自己倒未必
有害自己或他人, 可是他们就是极端教徒的
human shield， 帮著极品挡住批评。
http://www.beliefnet.com/Faiths/Secular-Philosophies/The-Proble
The Problem with Religious Moderates
We can no longer afford the luxury of political correctness. When religion
causes vi... 阅读全帖 |
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P******e
发帖数: 2223 | 23 whatever.
Just dislike to hear the words "Japan" from your mouth. Don't ask why.
You can go to hell with your theory Greater East Asia Co-Prosperity Sphere
One day, China will nuke Japan back to stone age.
of
also
to
to
.
East Asia Co-Prosperity Sphere is.. otherwise, u wouldn't have porvoked this
conversation to begin with... |
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y***u
发帖数: 101 | 24 For two vectors, simply look at the plane spanned by them
and measure the angle on the plane.
For two d-dim subspaces in a n-dim space, look at their intersection I,
which is a (d-1)-dim subspace. Let K be an (n-d+1)-subspace perpendicular
to I. Draw a (n-d)-sphere in K, centered at the projection of I on K,
and look at the fraction of the sphere bounded by the two subspaces.
If the two subspaces have different dimensions, project one onto another. |
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g****t
发帖数: 31659 | 25 The blog is mainly about numerical computation.
========================================
Precalculate T number of random triangles so that all points of the
triangles lie on the surface of the unit sphere.
Precalculate R number of random rays so that each ray goes through two
points randomly selected on the surface of the unit sphere.
Intersect each ray with the whole set of triangles, so there will be R &#
10005; T intersection tests in total.
======================================== |
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s******o
发帖数: 298 | 26 The heart of the Sudbury Neutrino Observatory is an acrylic sphere filled
with heavy water and surrounded by photomultiplier tubes. These detect flashes
of light produced when neutrinos interact with the water. This fisheye view
was taken from beneath the sphere before the bottom panel of detectors was
installed. Courtesy Ernest Orlando, Lawrence Berkeley National Laboratory.
By Govert Schilling
April 22, 2002 | Neutrinos have mass, they change identity when passing
through matter, and the Stand |
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s*****t
发帖数: 1994 | 27 KamLAND Verifies the Sun
Credit: KamLAND Collaboration
Explanation: A large sphere beneath Japan has helped verify humanity's understanding of
the inner workings of the Sun. The KamLAND sphere, shown above during construction in
2001, fails to detect fundamental particles called anti-neutrinos that are known to be emitted
by nearby nuclear reactors around Japan. This triumphant failure can best be explained by
neutrinos oscillating between different types. KamLAND's results b |
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h*******o
发帖数: 4884 | 28 长的neurosphere, 想设置一个最低的值,凡是大于这个size的都认为是sphere,然后自动计数有多少个sphere,并且量尺寸(面积也行)
请问photoshop能实现这个功能吗?
图贴在下面了
谢谢! |
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s******y
发帖数: 28562 | 29 不太懂你在问什么。你是想找一个方法来分开不同大小的球状物体（Sphere）？ 还是
想找一种作为尺度分离柱(size exclusion column)的树脂胶体（resin Sphere)？
对于蛋白和特别小的球状物体（小于10nm)，可以用滤膜或者分离柱来分开。分离柱材
料最常见的就是sephedex, 不同规格有不同的分离能力，具体看产品标定。
对于球状物体，如果体积比较大（超过10nm)，可以用gradient centrifugation离心法
来分离。 |
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d*****n
发帖数: 76 | 30 大家好，小弟是刚刚VCU毕业的博士，做的是贵重金属气凝胶方面的研究，大家是否有
合适的Postdoc或者公司的机会可以帮忙内推一下？定有重谢。附上我博士期间发表的
论文目录：
1. Gao, X.; Esteves, R. J.; Luong, T. T. H.; Jaini, R.; Arachchige I. U.
“Oxidation-Induced Self-Assembly of Ag Nanoshells into Transparent and
Opaque Ag Hydrogels and Aerogels” J. Am. Chem. Soc., 2014, 136, 7993–8002.
(IF = 13.038，SCI一区,引用11次)
2. Gao, X.; Esteves, R. J.; Nahar, L.; Nowaczyk, J.; Arachchige, I. U. “
Direct Cross-Linking of Au/Ag Alloy Nanoparticles into Monolithic Aerogels
for Applicati... 阅读全帖 |
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l******n
发帖数: 9344 | 31 the problem is I did as you said, but the interpolation give NaN values
to me.
I am little confused by this.
The function I am computing is smooth on the sphere under the sphere coo
rdinates, it might be singular to (x,y,z) coordinates. |
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l******n
发帖数: 9344 | 32 I did do whole circle interpolation.
Let me make it more clear.
suppose you are given a N by M matrix F, which is the values of the dens
ity function on the sphere, the corresponding coordinates are
x(i,j) = cos(theta(i))*cos(phi(j))
y(i,j) = cos(theta(i))*sin(phi(j))
z(i,j) = sin(theta(i))
I can plot the density on the sphere no problem, but as I said there are
holes in poles due to theta phi values.
For display purpose, I want to fix the wholes.
I want to change theta to THETA, which is equall |
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m**a
发帖数: 464 | 33 说在一个电梯里用弹簧悬挂一个金属球，问需要什么器材、如何测量球的位置。因为面
试的组是做touch screen的，所以我觉得这个显然就是问电容了。
我只有一个general idea: 只要能求出sphere到floor的capacitance，那就可以反推出
距离d，因为球和地就组成了一个电容。
但是怎么求这个电容呢？需要一个bridge circuit，然后把球和地接进来吗？
这两天我在网上找啊找，找到一个MIT的lab report，是讨论：
“Determine the behavior of a charged particle suspended between the plates
of a parallel plate capacitor as a function of the plate separation and the
separation of the sphere from a plate when there is no potential difference
between the plates.”
就是说两个plates（无电势差）之间放一个带有... 阅读全帖 |
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b****t
发帖数: 34 | 34 onto polymer spheres?
we know that -SH is a common chain transfer reagent, so it is difficult to
induce it into polymer spheres during emulsion polymerization process.
any hints? |
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A****Z
发帖数: 694 | 35 Cellulose不溶于水。高分子溶液的粘度高于小分子溶剂是因为两者的diffusion rate
不同。一个简单的物理模型是colloidal sphere分散在水中，用Einstein方程可以计算
增加的粘度。柔性高分子在稀溶液中可以理解成这样的sphere。我想应该有人研究过极
性的作用。 |
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f******r
发帖数: 2975 | 36 I have one n dimensional lattice L
the minimal norm of the lattice is (2d)^2
Let d be the radius of an n dimensional sphere
to me it is obvious that
the volume of this sphere
<= the volume of the lattice voronoi cell
but someone says that I have to prove it
I wonder how
thanks a lot |
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B****n
发帖数: 11290 | 37 I believe we can assume it's a differential curve that divides a sphere into
two equal areas. But maybe someone can give a more rigous proof for this
approximation.
In the following, I denote the curve as (t,f(t)) t in [0,1] and assume it's a
unit sphere with center at 1/2
1. We can only consider bounded variation curve otherwise its length can not
be minimal.
2. For bounded variation curve, its root is countable. Here I define root as a
real number a such that f(a)=0 and there exists a epison s |
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l********e
发帖数: 3632 | 38 ArXiv. Peterson, Wilhelm
AN EXOTIC SPHERE WITH POSITIVE SECTIONAL CURVATURE
继去年1/4 pinched sphere theorem以后的一个重大突破
希望是真的！ |
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y**c
发帖数: 133 | 39 Is there anybody can help me to solve this question:
A sphere of radius=R0 has gas in it;
There has a potential V(R)=V0*exp[-(R-R0)/a].
The atoms are colliding in the sphere, and the potential acts on the particles.
The question is:
How to get the Fourier transform of V(t), i.e.
Integral(from -inf to +inf) [V(t)*V(t+tau)]*exp(-i omega t) d tau
you may consider potential is much smaller than the kinematic energy, if otherwise too difficult to solve.
Thank you! |
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R********n
发帖数: 519 | 40 研究中牵涉到相关概念，但自己认识还很少，谢谢大家:-)
一个几何结构，如果global的来说，curvature都是常数，那么是不是这个结构
一定是hyper-sphere? 比如circle，sphere，etc
另外，一个几何结构，如果只是要求local的curvature是constant，那这个是？
比如一个Riemannian manifold，加上local curvature constant，能够得到？
谢谢！^_^ |
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a*********3
发帖数: 660 | 41 定义 definition变量 variable面积 area直径 diameter半径 radius公式 formula
单价 unit price范围 range/scope/extent集合 set法则 principle本金 principal利
率 interest rate利息 interest单利 simple interest复利 compound interest正数
positive number负数 negative number解析式 analytic expression分类讨论
classified discussion性质 nature （不是很确定）奇函数 odd function偶函数
even function对称 symmetric坐标原点 origin单调性 monotonicity（不是很确定）
任意 random周期性 periodic 有界性 boundedness 数学 mathematics, maths(BrE)
, math(AmE) 公理 axiom 定理 theorem 计算 calculation 运算 operat... 阅读全帖 |
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f*******n
发帖数: 12623 | 42 But you are only considering the part of the n-ball in the all positive
coordinates part of the space. So e.g. for sphere in 3D you are only
considering 1/8 of the actual sphere.
n. |
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f*******n
发帖数: 12623 | 43 But you are only considering the part of the n-ball in the all positive
coordinates part of the space. So e.g. for sphere in 3D you are only
considering 1/8 of the actual sphere.
n. |
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q********y
发帖数: 162 | 44 Banach Tarski Set 比 Vitali Set 是要神一点。
因为用转动把一个球分成了几个同样的球了。
抄一下wiki:
1.Find a paradoxical decomposition of the free group in two generators.
2.Find a group of rotations in 3-d space isomorphic to the free group in two
generators.
3.Use the paradoxical decomposition of that group and the axiom of choice to
produce a paradoxical decomposition of the hollow unit sphere.
4.Extend this decomposition of the sphere to a decomposition of the solid
unit ball. |
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j**p
发帖数: 53 | 45 This sounds like a physics-inspired problem, so let's try a physicist's
approach
1. define a 2-body interaction energy function E(r) -- to achieve the
desired 2-body distance pdf P(d), set $E(r)=-(\ln P(d))/\beta$. See 3 below.
2. define that there is no direct 3-body, 4-body etc. interaction. Hence the
system of N particles total energy is $H=\sum_{i\neq j} E_{ij}(r_{ij})$
3. define the physical system's distribution to be Boltzman distribution,
namely the probability the system is in state is:... 阅读全帖 |
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x********i
发帖数: 905 | 46 https://arxiv.org/abs/1610.09366
The Non-Existent Complex 6-Sphere
Michael Atiyah
(Submitted on 25 Oct 2016)
The possible existence of a complex structure on the 6-sphere has been a
famous unsolved problem for over 60 years. In that time many ``solutions''
have been put forward, in both directions. Mistakes have always been found.
In this paper I present a short proof of the non-existence, based on ideas
developed, but not fully exploited, over 50 years ago. |
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x********i
发帖数: 905 | 47 https://arxiv.org/abs/1610.09366
The Non-Existent Complex 6-Sphere
Michael Atiyah
(Submitted on 25 Oct 2016)
The possible existence of a complex structure on the 6-sphere has been a
famous unsolved problem for over 60 years. In that time many ``solutions''
have been put forward, in both directions. Mistakes have always been found.
In this paper I present a short proof of the non-existence, based on ideas
developed, but not fully exploited, over 50 years ago. |
|
m**o
发帖数: 9137 | 48 知道本版都是大牛，或者即将成为大牛，所以借宝地问问有关眼镜的问题：
想在国内配几副眼镜过来，我家一家老小，10几年都是在一家老店配的。所以很放
心，价格也很公道。
目前在美国测光，但是知道和国内的那个眼睛度数咋匹配，哪位大侠给指点一下：
R.EYE: SPHERE -11.25; CYLINDER +2.0, AXIS X96
L.EYE: SPHERE -12; CYLINDER +2.25, AXIS X72
多谢！ |
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d***a
发帖数: 128 | 49 1. SiO2 pattern as mask ok, even with large SiO2 sphere as mask, at 90C, PS
sphere will be soft, >100C, deform spherical shape
2, try to use tobulene, maybe working, |
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y**c
发帖数: 133 | 50 Is there anybody can help me to solve this question:
A sphere of radius=R0 has gas in it;
There has a potential V(R)=V0*exp[-(R-R0)/a].
The atoms are colliding in the sphere, and the potential acts on the particles.
The question is:
How to get the Fourier transform of V(t), i.e.
Integral(from -inf to +inf) [V(t)*V(t+tau)]*exp(-i omega t) d tau
you may consider potential is much smaller than the kinematic energy, if
otherwise too difficult to solve.
Thank you! |
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