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H********g
发帖数: 43926 | 2 【 以下文字转载自 Military 讨论区 】
发信人: greendot (低调), 信区: Military
标 题: Re: 网上暴炒击落无人机的激光神器，就是这个
发信站: BBS 未名空间站 (Tue Nov 4 12:12:28 2014, 美东)
New Laser Zaps Mosquitoes in SlowMotion
Uploaded on Feb 17, 2010
A new laser system can kill mosquitoes without harming other insects, as
shown in slowmotion video. It's all part of the effort to combat malaria.
https://www.youtube.com/watch?v=BKm8FolQ7jw
这个已经有小型化的产品了，用来杀蚊子用的 |
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t***h
发帖数: 5601 | 3 发信人: petriv (上完QBQ论坛的目标-移民美国), 信区: Reader
标 题: 关于朱学勤涉嫌抄袭事件的公开信（修订稿）
发信站: 水木社区 (Sat Jan 22 00:40:51 2011), 站内
水木社区读书心得版部分网友就朱学勤博士涉嫌抄袭问题致复旦大学学术规范委员会的
公开信(修订稿)
修订说明：
第二稿公开信根据部分热心网友，尤其是部分参与联署的网友的意见，修改了部分措辞
，修订内容主要有三方面，首先是单纯文字错误或不当表述的修订，其次是对部分称谓
的统一，最后是删除了部分过于激烈的措辞。并没有涉及对公开信主旨思想的修订，亦
请各位已经联署或将要联署的网友审阅。
正文：
水木社区（newsmth.net）“读书心得（Reader）”版是揭露复旦大学博士朱学勤先生
涉嫌抄袭事件的发源地，在这里长期活动的大部分是从事与学术有关职业或对学术问题
感兴趣的网友，我们目睹和参与了朱学勤博士涉嫌抄袭事件从提出、争论、媒体跟踪和
复旦大学学术规范委员会着手调查的全部过程。根据网友“Isaiah”、“留美博士”和
“邢玉思”等人的文章以及大量的分析、辩论，我们认为，从公认... 阅读全帖 |
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m****n
发帖数: 815 | 5 Nice house, even nicer swing. How long have you been playing? |
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u*********r
发帖数: 2735 | 6 very impressive. love your swing. |
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u*********r
发帖数: 2735 | 8 how come you are still >90 , what's your weakest part of the game? |
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v***s
发帖数: 4031 | 9 是不是重心的转移还有改进的余地？好像在向前挥之前没有看到左脚跟离地，而且杆接
近挥下的时候，左脚跟起了一下。随便讲讲，别介意。 |
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d******s
发帖数: 674 | 10 very impressive
nice tempo, rhythm and follow through
can't see anything wrong
if you really want to see some tiny issues, of course, IF there is any
compare frame by frame to your fav pro's swing
I found myself lots of little things to improve. |
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ET
发帖数: 10701 | 11 没球？
这家里练习和有球的室外差得不是一点2点。 |
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y**********7
发帖数: 769 | 12 我觉得他的挥杆满好. 由于他的柔软度好,他的左脚跟无需离地. 特别是铁杆,更无需左
脚跟离地. 目前绝大部分的职业球手左脚跟都不离地,无论铁杆或木杆.
接近挥下的时候，左脚跟起了一下。随便讲讲，别介意。 |
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v*****r
发帖数: 2325 | 13 for shorter club, hands are ahead of clubhead at impact. but for driver and
woods, hands and left forearm align with club shaft... my understanding
right?
since loft of driver or 3wood is so small... could not afford any deloft...
except you hit ball on ascending blow.... which you can do for driver....
do you have any driver swing video? i feel that it's hard to find a swing
both good for Driver/Woods and iron.... for a lot of amateurs...
"you will see all your lag is gone by that moment, but |
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b*******e
发帖数: 724 | 15 Thanks everyone for your comments. ET is right that practice swing and real
swing are different, but I can't hit a ball at home. I don't have any slowmo
of me hitting the ball because the recording requires some assistance from
another person and I can only do it from home. But the swings are close
enough for me to find the problems. Right now, my main problem is still
coming over the top, which causes pull to the left with my irons and slice
with long clubs. The problem is more severe when my t |
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b*******e
发帖数: 724 | 16 I am struggling while switching back and forth between Dr and 8i, which are
the two most practiced clubs. I cannot hit the 8i very well when first
switch back from hitting the driver for let's say 20 balls, or vice versa.
That's why I don't hit many fairways. The same swing doesn't work for both.
I will try to find somebody to help me with videos of me hitting the ball at
range.
and
.
" |
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b*******e
发帖数: 724 | 17 I started playing last summer. Videos really help me improve my swing. |
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v***s
发帖数: 4031 | 18 I can't see YouTube at work, but like your low takeaway which creats a wide
swing arc that promotes a power clubhead speed and a long shot. Assume you
can drive a ball more than 250 yards off the tee.
real
slowmo
from |
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ET
发帖数: 10701 | 19 买个三角架，去练习场上拍就行了。
另外，slow-motion其实远不如真实swing给的信息多。
slow-motion 是假的。
真是swing video可以在机器上以slow motion上放出来，但坚持节奏什么的，还是要看
真是的video.
另外，想学别人的手在球接触刹那也不现实，
real
slowmo
from |
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b*******e
发帖数: 724 | 20 I am not averaging 250 off the tee. I am only averaging 2-4 fairways per
round. The longest tee shot I ever hit came from three weeks ago, at a 400
yd par 4, i hit a 270 drive. Two other times, I hit around 260, but these
are three out of over 30 rounds of golf I have played so far. But most of
the time my drives are in the 200-230 because I either don't hit it straight
or solid.
wide |
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v*****r
发帖数: 2325 | 21 probably ET pointing to me learning ELS left hand bow and right hand roll at
impact.
i do take both slowmo and regular speed tho.
带tripod to range a couple of times, 有一点显烦. video at home is easy
alternative.
最近懒得shoot swing video, just swing whatever i feel comfortable for two
month, and let ball flight and stats on course be ultimate JUDGE.
last monday played driver well, wanted to find out what changed, so shoot
one. alwyes looked uglier than i think. start to appreciate pro players
with u |
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b*******e
发帖数: 724 | 22 确实是只要打的好就是硬道理,但是当你打的又直又长的时候,通常你的SWING就更接近
PRO了.我个人偏爱HOGAN的SWING,但老候的SWING实在太难学了.只能欣赏欣赏而已,要真
模仿恐怕就的到处找球了.
at
shoot |
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v*****r
发帖数: 2325 | 23 hogan is probably a swing better model if height is less 5feet 9ft. i chose
ELS because more slomo video of his swing are available. i just focus on
the common features. like his lag, posture, impact and finish... he
rehinges club quicker than tiger during finish....
get tiger bood from lib for second time, he talked about swing change, he
treat swing like a fragile gift, no dramatic change. more like fine tuning.
it's unrealistic to think of dramatic change of swing look and dramatic
car |
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A*f
发帖数: 3067 | 24 "当你打的又直又长的时候"
我一般都会想肯定是买对杆了 //hehe |
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ET
发帖数: 10701 | 25 swing video有帮助，在最基本的setup上。
本期的golf digest有对sean o'hair的采访，有段话我印象挺深。Sean 说对他帮助最大
的是他老婆。他还在小型比赛混的时候，每次都把摄像机带上，直到有一次，他老婆执
意说，这次不带了。
结果他打得很好。从才就改变了他对摄像机的依赖。
他还是属于一个非常喜欢改动作的球员，他觉得就是他的个性，即使很多人建议他别这
样。他改动作的依据就是拍自己动作的录像。
对于练习高尔夫来说，在家和在练习场是不一会事，在练习场和在球场也是不同的一会
事，在球场自己打着玩和打比赛也会有不同 - 即使这个差别会小些，特别是对于大多数
的我们有份其他职业时，对以此为生的可能差别就大了。
用录像来学高尔夫一个最大的问题是，你失去了自己对golf swing的感觉 - 这种感觉本
来是从练习中自我体会出来的。你练习过程中，脑海里总是试着学别人的动作。
而就像Randy前天我们聊到的：每个人的个性都不同，因而每个人的动作也都有不同，简
单的抄别人的动作是不可能有效的。
当然了，很多东西还是需要自我体会的。
at
shoot |
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r*********l
发帖数: 120 | 26 真认同这点！
本以为新买的BURNER会改善TEE SHOT，哪知道球都乱跑，还没我LD的Lynx杆来的好用..
.. |
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D*****r
发帖数: 69 | 27 Beautiful:))
Why you didn't play on level footing? And better put on your golf shoes --
half-inch lower in setup could make a big difference in your visual
reference. |
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v****e
发帖数: 19471 | 28 very good. a couple things:
1. lateral movement of hips a little too much at the beginning of down swing
. this could cause miss hits because basically it shifts your spine base a l
ittle bit.
2. looks like your COG moves toward target during your back swing and goes b
ack to the right foot during down swing. this may cause you to lose some dis
tance.
I have the same issues and am still working on them. |
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w***z
发帖数: 771 | 30 very good video
跟我以前分析的差不多, 反手要平行引拍, 手腕的运用远比手臂的运用重要 |
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U*******1
发帖数: 1565 | 31 The movement of Xu Xin's shoulder and upper body impresses me. When I do RPB
, my shoulder and upper body does not move too much.
I guess that Xu Xin’s approach (shoulder and upper body) can be more
consistent, use strength, and be good at medium -far of table |
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w***z
发帖数: 771 | 32 I think both of them had their shoulder, upper arm and body moved, and of co
urse Xu Xin had a much larger movement than Malong.
There are two possible reasons:
One is that Xu Xin stayed in the place far from table since he shot all the
balls in its falling period which allows him have the time to get more body
involved and he also needed more strength from body to get ball back with po
wer.
The other one is that Malong had a mix of both forehand and backhand shot bu
t Xu Xin might only have a m... 阅读全帖 |
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D***e
发帖数: 48486 | 33 给你加了空行，咱写E文，最好让人看的清楚点儿哈
co
the
body
po
bu
fo
e |
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U*******1
发帖数: 1565 | 35 Many people’s Chinese was much worse than those what you called bad English.
No one either tried to be picky for bad Chinese. But many are picky for bad
English.
Many had bad English understanding so that they have difficulty to
understand those except perfect English.
In my views, most of people's Chinese are full up grammar Errors, but do not
prevent from understanding. |
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c*********e
发帖数: 1389 | 36 先批评一下录像的同学，他屏气录了不到20米，你换气他也换，随后镜头对不准又错过
了近距离的5米。最后你没完，他又不行了。一定要找一个可以为你憋50米的人！录像
的不是你领导吧：）
你的问题，咱只说大的，是上肢划水，全身streamline和打退。哈哈，除了这三个，游
泳也没啥了，是吧？ 这些是相互联系的，我觉得最好的办法是看video模仿。下面我会
找些youtube，推荐给你。你当前最重要的和急需解决的问题是你的训练方针和方式方
法。你给我的感觉是，把自行车和跑步的训练带到了游泳中。游的贪快，胳膊划的向风
车。游泳是技术活儿，你要是拿它当跑步一样，以距离，速度和心跳为参数的练，最终
是游不好也游 不快的。你要多游短距离，着重体会动作和水感。
对于你这样的初学者建议，首先是照猫画虎，先把form作对。找孙阳和thorpe的
slowmotion，在家里模仿划水。最好videotaping自己。这是我们小时候必修的，每天
几百上千的。你如果在没水的情况下做不了，游水时就更没戏了。练的时候，要注意：
划水两臂不同于蹬自行车的双腿，周而复始，同速匀速运动。游泳划水从入水，抱水，
拉水到推水，... 阅读全帖 |
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h******n
发帖数: 734 | 37 huge backswings are fine but are, see youtube for soderling's forehand
slowmotion.
at teh end of your backswing. the racket is past the plane of your body.
this is a big no no.
good examples backswings to check out are agassi and federer's.
hey, but your unstable upper body is more of a problem.
also i agree you have a pretty good swing. just need some time to fix small
problems. |
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M****N
发帖数: 27 | 38 你这么谦虚，那我就班门弄斧了，如有冒犯就忽视就是了。
是的slice serve是我现在的最爱。flat与kick两个极端，flat对精神状态身体状态要
求很高，即使状态好，发出100mph多一点的球速，但是如果角度不好的话，对4.0以上
的选手没有任何威胁，他们很喜欢这个pace；状态不好就fault了。kick虽然不易fault
但是，没有发好，球速过低，kick又不高，直接被人打死。slice serve即稳又有速度
还容易curve角度：righthanded可以在duce side 把对手拉出球场，在ad side发到T.
一般我1发2发都用slice serve，区别在于pronate多少。
刚刚用slowmotion仔细看了你的发球，平击太伤肘可能你是在击球pronate的时候你的
前臂与大臂角度太直，stretch得太多，没有缓冲空间所以拉伤（形成golf elbow的主
要原因），我不注意也经常有这个问题，因为总想模仿Pro抛球靠前一些，打击点高一
些，球速快一些，可是有没有向Pro一样timig和jump，从而stretch得太多，前臂与大
臂角度太直，所以伤肘。
... 阅读全帖 |
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l********e
发帖数: 3632 | 39 slowmotion?
你用的60FPS
或者你电脑太慢。 |
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i*********5
发帖数: 19210 | 41 转一个泳版高手CC（chipncharge）的评语：
发信人: chipncharge (feel the touch), 信区: Swimming
标 题: Re: 奔视频了！500m 10:10, 2:02/100m, 26 strokes per 25m
发信站: BBS 未名空间站 (Mon Dec 24 17:01:25 2012, 美东)
先批评一下录像的同学，他屏气录了不到20米，你换气他也换，随后镜头对不准又错过
了近距离的5米。最后你没完，他又不行了。一定要找一个可以为你憋50米的人！录像
的不是你领导吧：）
你的问题，咱只说大的，是上肢划水，全身streamline和打退。哈哈，除了这三个，游
泳也没啥了，是吧？ 这些是相互联系的，我觉得最好的办法是看video模仿。下面我会
找些youtube，推荐给你。你当前最重要的和急需解决的问题是你的训练方针和方式方
法。你给我的感觉是，把自行车和跑步的训练带到了游泳中。游的贪快，胳膊划的向风
车。游泳是技术活儿，你要是拿它当跑步一样，以距离，速度和心跳为参数的练，最终
是游不好也游 不快的。你要多游短距离，着重体会动作和... 阅读全帖 |
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