f******t 发帖数: 7283 | 1 我只是举一个例子。碰撞测试里有很多个测试点,我总不能全部copy-paste出来。重要
的指标都在这里:
http://www.iihs.org/ratings/datatables.aspx?class=55&type=f
你可以逐一对比一下,看看你心目中的top pick(其实是人家的pick,只是名头比较响
,容易让大众镇住)大概是处于什么水平。数字可不会说谎的哦。另外这些测试里通过
配重把每辆车的重量都调到差不多那样,测试条件是客观公平的。
你可能会产生一个问题:假如实测结果数据是这样,为啥它还上top pick?这里我不是
什么专家,但有个道理我明白:涉及传媒这方面的事情,technical是一方面;而
politics则是另一个可以说是最重要的方面。所以每当我看这些东西,主要找
technical那些内容,涉及到politics那部分则一笑置之;不过现在看来也有一些人是
反过来的。请不要误会,这里我不是说谁对谁错。
Safety |
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p*********e 发帖数: 32207 | 2 http://www.iihs.org/ratings/datatables.aspx?class=10&type=f
driver side intrusion
BMW 5 series
model tested: 2011 1 1 1 1 2 0 0 1 1 0
Mercedes E class
model tested: 2010 1 1 2 2 2 -1 -1 -4 -8 0
driver injury measures
BMW 5 series
model tested: 2011 155 no contact 1.1 9 0.22 34 1.0 1.5 3 6 0.38
0.54 2.4 3.1 52 55
Mercedes E class
model tested: 2010 245 negligible 1.6 10 0.37 45 2.3 2.6 3 5 0.47
0.60 2.8 3.6 73 63
还是有小小差距,虽然不大. |
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p*********e 发帖数: 32207 | 3 仅从结构强度上看,新5系跟当前这一代的A6(04年至今,08年facelift过,但仍是同一平
台)比
有压倒性的优势
iihs的碰撞测试结果:
Footwell intrusion Brake pedal (cm) Instrument panel rearward movement
Steering column movement A-pillar rearward movement (cm)
Footrest (cm) Left (cm) Center (cm) Right (cm) Left (cm) Right (cm) Upward (
cm) Rearward (cm)
BMW 5 series
model tested: 2011 1 1 1 1 2 0 0 1 1 0
Audi A6
model tested: 2005 6 7 8 9 2 2 4 4 -1 0
上面各个数字是乘员舱安全笼里一系列checkpoint的形变数据
数字越小说明形变越小,反映车身强度越高,对乘员保护越好
差异已经是数倍了.
http://www.... 阅读全帖 |
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i****x 发帖数: 17565 | 14 FYI,提示:请摘掉有色眼镜读贴。
发信人: icefox (icefox), 信区: Automobile
标 题: Re: 奔驰雷克萨斯和奥迪豪车在碰撞试验中获差评
发信站: BBS 未名空间站 (Tue Aug 14 09:48:33 2012, 美东)
这个list里最惨的就是Lexus ES和BMW3,因为这两个是全新设计刚上市,几年内都没机
会大改。而infiniti g,MB C这样马上就要改款的,新款会增强车体设计,安全性马上
就会有很大提高。
发信人: icefox (icefox), 信区: Automobile
标 题: Re: 奔驰雷克萨斯和奥迪豪车在碰撞试验中获差评
发信站: BBS 未名空间站 (Tue Aug 14 09:29:39 2012, 美东)
我把这些数据整理了一下,以每项得分离均值多少个标准差为标准进行了
normalization,以50*(2-average sigma)为公式给每辆车算出了得分,越高越好,以
供大家参考。
S60 145
TL 136
G 119
CC 111
TSX 111
MKZ ... 阅读全帖 |
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p*********e 发帖数: 32207 | 16 碰撞原始成绩(包括车身checkpoint形变及假人checkpoint受力情况):
(向下翻页至FRONT SMALL OVERLAP部分)
http://www.iihs.org/ratings/datatables.aspx?class=15
从视频里观察慢镜得到的结论,决定形变成绩的首先是左前轮卸力情况
后者决定车身本身要通过形变吸收多大的动能
当碰撞过程中车身动态可比时,结构强度才对成绩有可观的影响
此次碰撞成绩最好且远好于其他一切对手的S60,
本身从40%偏置正碰成绩中看表现就不错,但并非一枝独秀
但在1/4偏置正碰中因为左前轮几乎在impact后立即脱落
车身直接划过障碍物继续前行,因此也得到了远好于其他对手的结果
反过来之前表现平平的ACURA TL,因为前轮迅速脱落卸力,
也取得了第二名并且明显好于其他参试车辆的成绩
这两辆车也是唯一获得G rating的参试车.
考虑到这些事实,新碰撞的结果至少无法合理的反映车身强度
猥琐一点儿说,下一天车厂把车前轴/前半轴,前悬故意做的不结实点儿
保证前轮一撞就掉,成绩立即可以普遍有质的飞跃
但我不觉得这样的设计对现实世界的车辆... 阅读全帖 |
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s*******e 发帖数: 3042 | 21 赞,信息量很大。今天又去试开了一次MDX,感觉操控非常好啊,完胜很多family
sedan, 比途锐也好的多,跟X3差不多。很多杂志的review也都把MDX的操控性当做一个
大亮点。不知道你说的过弯没有confidence是怎么回事,我怀疑跟换挡顿挫带来的
drive train松动的感官有联系。
加速换挡有顿挫感,不知道你有没有去查查torque converter,听上去像这个问题。
drive train的任何一个部件有点小问题都会让人感到整个drive train变的很烂。
fender和engine bay之间放泡沫塑料很正常,或者很多车就是空着啥也不放。当然,露
出这么大一块就很丑了。
这些塑料对不齐缝确实很恶,让人对车的观感一下降低一大截。不知道Honda是怎么想
的。
碰撞测试的详细数据在这里:
http://www.iihs.org/ratings/datatables.aspx?class=50&type=f
可以看出MDX的形变比别的稍微大一些。当然,形变的这点差别能带来多少实质上的不
同很难讲,毕竟是款接近5000磅的SUV,说比路上95%的车安全应该不算夸... 阅读全帖 |
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g********d 发帖数: 19244 | 22 ☆─────────────────────────────────────☆
felixcat (felixcat) 于 (Thu Mar 7 17:01:19 2013, 美东) 提到:
发现有一些人存在误解:认为碰撞测试成绩能代表有没有用高强度/超高强度/极高强度
钢材来造车身,有没有“不计成本”来给好货给消费者。从而一旦发现碰撞测试看上去
不好,就觉得车厂没有用好钢材省成本。
事实上并非这样,我下面列举一些具体的车型的车体结构,大家就能发现一些碰撞测试
成绩很好的车子,事实上并没有用很高强度的材料;而一些碰撞测试让人觉得成绩一般
的车子,事实上却是用了很不错的钢材。造成这种直觉上“对不上号”的原因在于,碰
撞测试成绩不完全取决于钢材硬度,它还跟车体形状、能量传递的设计意图有关。
首先看Audi A4。在small overlap碰撞测试成绩出来之后,这车子的结构强度在公众心
目中马上从天堂掉到了地狱。A柱拦腰截断,这不像话。
但是实际上A4车身框架用料极其足,车身结构有65%是强度超过300 MPa的高强度钢制造
;在这里面又有占全车身18%的材料是强度在500到1... 阅读全帖 |
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d*******r 发帖数: 516 | 23 用个jQuery的开源datatables还删license 笑尿了 估计是外包到印度或者中国了 |
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d*******u 发帖数: 186 | 24 Question one:
Tree::_InOrderIterator::operator++()
{
TreeNode* node = this->Node->right();
stack itstack;
//leftmost of right child.
while(node != NULL)
{
itstack.Push(node);
node = node->left();
}
leftmost of right child.
node = itstack.Pop();
if (node == NULL)
{
node = end; //reserved end n... 阅读全帖 |
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d*******u 发帖数: 186 | 25 Question one:
Tree::_InOrderIterator::operator++()
{
TreeNode* node = this->Node->right();
stack itstack;
//leftmost of right child.
while(node != NULL)
{
itstack.Push(node);
node = node->left();
}
leftmost of right child.
node = itstack.Pop();
if (node == NULL)
{
node = end; //reserved end n... 阅读全帖 |
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d*******u 发帖数: 186 | 26 Question one:
Tree::_InOrderIterator::operator++()
{
TreeNode* node = this->Node->right();
stack itstack;
//leftmost of right child.
while(node != NULL)
{
itstack.Push(node);
node = node->left();
}
leftmost of right child.
node = itstack.Pop();
if (node == NULL)
{
node = end; //reserved end n... 阅读全帖 |
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d*******u 发帖数: 186 | 27 Question one:
Tree::_InOrderIterator::operator++()
{
TreeNode* node = this->Node->right();
stack itstack;
//leftmost of right child.
while(node != NULL)
{
itstack.Push(node);
node = node->left();
}
leftmost of right child.
node = itstack.Pop();
if (node == NULL)
{
node = end; //reserved end n... 阅读全帖 |
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i***0 发帖数: 8469 | 28 这是我们内部的一个软件
也没有那个抓的动能啊
我们后台有datatable
但是那个在做bussniess logic的时候,有各种各样的数据
比较麻烦 |
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发帖数: 1 | 29 来自主题: Immigration版 - 打指纹时间 请问你们二位收到receipt上的通知是怎么写的?原来是都是收到收据后一个月就可以
打指纹的,怎么现在要三个月这么久了啊。。。。哎
我的receipt date 是12/18号,目前也是并没有通知我打指纹,我也是TSC.
我今天又仔细看了一下我的485 receipt, 发现上面写的:
This notice inform you that USCIS is able to reuse your previously captured
fingerprints and other biometric. USCIS will run the same security checks
and use your biometric datat as in the past, however, it is nor neccssary
for you to appear at a USCIS Apllication Center for a biometrics appointment
. The biometrics fee will not be refund.
我2016年打过一次指纹,但... 阅读全帖 |
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发帖数: 1 | 30 来自主题: Immigration版 - 打指纹时间 请问你们二位收到receipt上的通知是怎么写的?原来是都是收到收据后一个月就可以
打指纹的,怎么现在要三个月这么久了啊。。。。哎
我的receipt date 是12/18号,目前也是并没有通知我打指纹,我也是TSC.
我今天又仔细看了一下我的485 receipt, 发现上面写的:
This notice inform you that USCIS is able to reuse your previously captured
fingerprints and other biometric. USCIS will run the same security checks
and use your biometric datat as in the past, however, it is nor neccssary
for you to appear at a USCIS Apllication Center for a biometrics appointment
. The biometrics fee will not be refund.
我2016年打过一次指纹,但... 阅读全帖 |
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i***0 发帖数: 8469 | 33 Hi
I am Rajesh D, Sr Technical Recruiter with Aditi Consulting. I came across
your resume in one of our Job board and wanted to check your availability
for new positions that we currently have. If you are available please
respond to this email with your updated resume and let me know the best time
and number to reach you.
Would also appreciate any references
Software Developer Web and Video Performance - Bellevue, WA
6 months
Job Description:
Designs and develops internal and ext... 阅读全帖 |
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b*****r 发帖数: 4717 | 34 邓年纪不小了,张还是翁更可比些?
Clooney总比Sean Penn, 还有什么vivi更datatable lol |
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b********2 发帖数: 855 | 36 Client side paging or server side paging
简单点,直接用 JQUERY DATATABLE,全帮你弄好了。 |
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n*****t 发帖数: 22014 | 38 哦,一开始你问 PHP 我以为是说后端,前端用那个datatable 我看行
front |
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g****o 发帖数: 1284 | 39 想了好几天终于想明白了,前台调用getJSON函数,它的URL参数可以把投票者选中的
voteID和optionID传到后台文件Poll.ashx,后台文件调用context.Request["voteID"]
和context.Request["optionID"]来取得这两个值去操作数据库,并把投票数据装入一
个datatable,然后拼接JSON数据结构返回到前台,用JQUERY操作DOM来得到输出结果。
原作者高估了我这样菜鸟的理解能力,没有给出操作数据库的代码,好在最后自己琢磨
出来了。Poll.ashx里的代码都是C#的。 |
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r******r 发帖数: 346 | 40 在jsf里面要显示一个table,每行这么排的:
| c1 | c2 | c3 | c4 |
| | c5 |
用datatable怎么实现?或者有没有sample code怎么用datalist实现? |
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n****u 发帖数: 229 | 41 Sorry I can not write Chinese here.
In MySQL, I have two databases: newdb and olddb
table1 in newdb, table2 and table3 in olddb
table1 has userid, nickname, msn
table2 has userid, nickname
table3 has userid msn
First I use NaviCat to import table2 into table1, very fast! 320,000 records
in 2 mins!
Then I tried to import table 3 into table1, now I have to check userid first
, then UPDATE table1. Very slow. 50,000 records in 12 hours
Anyway I can make it fast?
Thanks |
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n****u 发帖数: 229 | 42 If I innerjoin table2 and table3 first, will it be faster? |
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t*********i 发帖数: 217 | 43 yes you should join first then import.
My estimate is the total time would be comparable to only import table2. |
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n****u 发帖数: 229 | 44 How long will it take to inner join table2 and table 3 (each has 320,00
records) |
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t*********i 发帖数: 217 | 45 That really depend on your system, how much memory, how much undo space ( I
am from Oracle side, but mysql should have have similar structure), do you
have indexes on tables or not. You need to talk to your DBA to know that.
If I need to do this, I probably will do the join and insert in chunks(id in
certain range is good candidate; again, you need to have good index in
place). commit in chunks will reduce requirement to system resources.
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n****u 发帖数: 229 | 46 Thanks for your reply.
I test INNER JOIN:
INNER JOIN table 2 and table 3, 40 seconds (not sure it's good or bad for
320,000 records)
So I started to work on my real task
INNER JOIN table 2, table 3 and table 4, 3 mins (320,000 records)
export result to dbf file, 10 mins
import dbf into Table1, 10 mins
Finally I finished my task in half hour, instead of 3 days.
Now how can I improve export and import process?
PS. I am a .net programmer, but team leader asked me to migrate database.
The next task |
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B*****g 发帖数: 34098 | 47 1. check if table2, table3 has primary key userid.
if not, add.
2.
insert into tables1(userid, nickname, msn)
select a.userid, a.nickname, b.msn
from table2 a, table3 b
where a.userid = b.userid.
1. check if table1 has primary key userid.
if not, add.
Note: IF userid is not unique in table 2, table3, kick the person who design
these tables.
records
first |
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B*****g 发帖数: 34098 | 48 tell them to start to use sql server, hehe |
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n****u 发帖数: 229 | 49 I love you both tangyuanlai and Beijing! hehe
Yes, I tried this way, it's sooooooo fast!
Insert new table
select
from inner join of old tables
21.891 ms (migrated 320,000 records)
Previously I used C# code, it would take me 1 week
Then I used NaviCat import wizard, it would take me 3 days
Yesterday I exported query result and imported into new table, it took me 30
mins
Now, 21.891 ms haha
Thank you very much!!! |
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B*****g 发帖数: 34098 | 50 check record number in 3 tables see if they match.
30 |
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