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全部话题 - 话题: compression
1 2 3 4 5 6 7 8 9 10 下页 末页 (共10页)
y**i
发帖数: 357
1
http://www.cnet.com/8301-13645_3-57454451-47/the-top-10-reasons
----------------------
No. 10: Compression is part of the sound of contemporary music. Completely
uncompressed music would sound lifeless and boring to most listeners. They
crave more energy than unprocessed sound offers.
No. 9: Louder music, even if it's just slightly louder, almost always sounds
better than quieter music.
No. 8: Most music is listened to in the background to accompany some other
activity like working, reading exer... 阅读全帖
r**h
发帖数: 1288
2
对于每个字符,直接数当前字符出现的数量
如果大于1那么还要append上数字
def compress(s):
s = list(s)
l = len(s)
i, k = 0, 0
while i s[k] = s[i]
k += 1
j = i+1
while j j += 1
count = j-i
if count>1:
s[k] = str(count)
k += 1
i = j
s = s[:k]
return "".join(s)

print("", compress(""))
print("abc", compress("abc"))
print("aabbbccc", compress("aabbbccc"))
print("aaaaaaaaaaaaaaaaa", compress("aaaa... 阅读全帖
m****i
发帖数: 1980
3
来自主题: Running版 - compression装备
揪结compression装备有一段时间了,从10月分就打算买,感恩节差点下了单,膝盖一
有风吹草动就惦记着赶紧整一套回来,膝盖一好就觉得“也许没那么神吧?”
anyway今天到底没忍住。
今天晚上去Sports Basement注册新年的第一跑,本来可以在Active.com注册的,但是
为了拿20%off的sticker,就去了SB。本来是打算买些袜子的,结果败了sugoi piston
200 compression tights(race&recovery)+sugoi piston 140 compression long
sleeves top,sale加20%,算下来裤子加上衣一共96刀
http://www.sugoi.com/Compression
我的running tight主要是Nike和Sugoi的, Compression穿上后的感觉和一般的running
tight相比真太不一样了,有点象穿着一层“紧紧的皮肤”的感觉(鲨鱼皮???哈哈
),全身的肌肉觉得非常紧凑,感觉上很strong lean,有力量。膝盖的不适感立即觉
得不疼了,而穿一般的running... 阅读全帖
T*U
发帖数: 22634
4
http://www.msn.com/en-us/autos/news/mazdas-next-gen-skyactiv-engines-will-drop-spark-plugs-in-favor-of-high-compression/ar-AAlV9gi?li=BBisPVf&ocid=spartanntp
Homogeneous charge compression ignition, or HCCI, is the black art of of
internal combustion engines that aims to produce diesel-like fuel efficiency
for the cost of gasoline. Although some of its competitors have developed
and subsequently given up on the tech, Mazda confirmed that the next-
generation of SkyActiv engines will employ HCCI ... 阅读全帖
w*******y
发帖数: 60932
5
EveryDaySource
8-piece Compressed Travel Towels
$7.99 - $7.50 code S8CTTW
= $0.49 with free shipping
*deal starts 6:30 PM PST*
# These Compressed Travel Towels fits easily into your pockets and
decompresses when in contact with water
# Mini conveniently sized Compressed Travel Towels are perfect for traveling
# Simply add water and the Compressed Travel Towel will decompress and
expand
# Compact size makes it great for cleaning up after strenuous outdoor
activities like hiking or biking
# Towel
h*****d
发帖数: 112
6
来自主题: _Graphics版 - 关于“texture compression”的话题
Texture compression is focusing on compressing the synthetic world.
In other words, you know all the physical strcuture generally, for exmaple,
the geometry and surface property of objects. The main applications lie in
virtual reality, computer game, etc. Texture compression should also consider
the rendering effects. You need get fimiliar to the rendering if you wanna
study
in texture compression. In siggraph, there are several papers on this topic.
In
siggraph 2000, there one paper and you can
g*2
发帖数: 658
7
来自主题: Running版 - timing and during of compression
这个compression似乎很有讲究,对医学上用于治疗chronic venous insufficieny的时
候,包扎得强度也有不同要求,需要专业的人的护理。 我不是运动医学专业,也不是
血管外科,所以也不清楚。
uptodate上关于RICE, 只提到说必须在醒的时候用,具体时间也没提。
Compression — An elastic wrap or tubular stockinette can be applied for
compression during waking hours. The six-inch elastic wrap should be applied
starting from the mid-calf to approximately 10 cm above the superior pole
of the patella. The wrap should be removed for icing and reapplied afterward.
w*******y
发帖数: 60932
8
(it's been ages since I found a deal worth posting that wasn't already on -
please be nice!)
**Use Coupon "FEBFAMILY" for an additional 25% off** - combined discount is
~72%.
Tax for some states (I paid tax in TX). Shipping is free.
Clad.com has men's spanx compression undershirts on clearance. Most are in
black, white and grey. Grey has the largest range of sizes available.
Cotton Compression (retail: $55-58)
V neck: ($16) Link:
http://www.cladmen.com/on-sale/socks-underwear-and-loungewear/c
C... 阅读全帖
l******l
发帖数: 9
9
来自主题: _Graphics版 - 关于“texture compression”的话题
请问各位,有否知道关于“texture compression”方面的技术。
我主要想知道“texture compression” 与一般的video和image compression方法有什么
不同之处,它的主要的applications是什么??//谢谢!!!
t******q
发帖数: 117
10
【 以下文字转载自 EE 讨论区,原文如下 】
发信人: mizhael (mizhael), 信区: EE
标 题: 请问DCT可用于IMAGE COMPRESSION的关键原因是什么?
发信站: Unknown Space (Wed Aug 20 23:28:27 2003) WWW-POST
Dear all,
I am facing with a question in transform based image compression.
Let me ask in this way, if I want to design my own image compression transform
basis, consider the transform as 8x8 matrix multiplication. In 2D case, the
transform can be regarded as Y=T*X*T'. For 1D, the transform is Y=T*X.
Now if I want to design my own transform basis
a********e
发帖数: 28
11
来自主题: Automobile版 - compression pressure 100 psi
因为之前cylinder#1的Valve burnt
找了一个Mechanic修
修好後engine light仍是亮的
今天找了另一个Mechanic检查
发现cyliner#1的compression pressure只有100 psi
其他三个都是175 psi 很显然没修好
但是第二个Mechanic说感觉上他根本就没修,只是骗我钱
我找第一个修之前,cylinder#1的compression只有35 psi
现在虽然进步到100 psi 但仍不够
假如他努力修了,修的不好,我还能接受,再回去找她叫他修好
假如他根本就是骗人,我就不回去找他了,可能要去告他或是讨钱回来
想问一下他是不是技术差没修好,还是存心就是骗我
c**d
发帖数: 3888
12
看样子是 leaky valve? 风险不大。就是最多突然 engine failure 歇在路上。
low compression 导致 misfire,那得多低的 compression? 有数字吗?还是赶快修吧
。继续开的话,估计很快引擎就挂了
I******i
发帖数: 203
13

谢谢律师。
那得多低的 compression? 有数字吗? 这个我不知道,我就是一个汽车小白,当时修
车行的人就说compression 低,我也没问到什么程度了。。。
u*****o
发帖数: 1224
14
很经典的一题,
Compress a given string "aabbbccc" to "a2b3c3"
constraint: inplace compression, no extra space to be used
CC150的答案是JAVA的。。而且我觉得那个方法挺麻烦的,在网上搜了半天,似乎
AMAZON, GOOGLE都出过这题啊,很希望牛牛们能给个C++的解法,关键是
abcd 我的CODE RETURN a1b1c1d1啊。。还有如果COUNT>10,也不行。。反正各种弱。。。
r*********n
发帖数: 4553
15
那如果要输出1呢?
Compress a given string "aabbbccc" to "a2b3c3"
constraint: inplace compression, no extra space to be used
assumption : output size will not exceed input size.. ex input:"abb" -> "
a1b2" buffer overflow.. such inputs will not be given.
http://www.careercup.com/question?id=7449675
h**o
发帖数: 548
16
char *compress(char* str){
...
char* dest = (char*)malloc(sizeof(char)*(2*len+1));
...
};
cc150说如果COMPRESSION比原str短,才用新的dest。否则还用原来的str。那caller怎
么知道你返回的是原来的str,所以他不用free dest, 还是你返回了dest,需要caller
free 掉dest哪?
r****o
发帖数: 1950
17
【 以下文字转载自 Faculty 讨论区 】
发信人: roufoo (roufoo), 信区: Faculty
标 题: how to compress a 5-page paper into a 2-page summary?
发信站: BBS 未名空间站 (Mon Oct 19 00:21:01 2009, 美东)
find it hard to compress,
The paper sections include abstract, introduction, proposed work, simulation
, conclusion, bibliography, etc.
Anyone have suggestion?
s******y
发帖数: 352
18
9'' only white color for medium is 10.99
1. 7in short
http://www.ebay.com/itm/Under-Armour-Mens-HeatGear-Compression-
2. 9in short
http://www.ebay.com/itm/Under-Armour-Mens-HeatGear-Compression-
I got blue for 15.49. it is really good deal.
m****i
发帖数: 1980
19
来自主题: Running版 - compression装备-update试验报告
最近两周基本全趴,今天跑了个6迈也基本上是个意外,星期五晚上喝酒到半夜,昨天
一天自然就在hangover,加上下雨,于是晚上9点就睡觉了,一觉睡到中午,阳光明媚
,觉得不出去跑一把简直是太浪费了,加上很想尝试一下买了俩礼拜的compression装
备,于是就穿戴好出去跑了个10K。本来我左边膝盖的itbs很疼,穿上裤子后,发现跑
起来只是会隐约觉得左边膝盖不太爽,但是并不疼,跑了10分钟后,膝盖的不适感完全
消失,基本上没有任何不舒服,但是因为初次尝试,还是坚持跑的很保守,发现心跳应
该是恢复的差不多了,跑10分多的pace,心跳都在140以下。中间冲了冲八分半的pace
,心跳也很不错。由于下周六有10k比赛,为了不出差错,不敢多跑,于是回家了。 现
在跑完已经6个小时了,膝盖没有任何不爽,没有跑完后的疲劳感.
穿上跑步没有我想象中的束缚感,相反觉得非常”lean“跑起来的非常的舒服
轻松,觉得下面几种情况大概很好用:
可以在受伤恢复期间穿着跑;
冬天跑长跑;
长跑后当天穿着加速恢复。
至于衣服:没有觉得很大的不同(因为我平时跑步的上衣基本都是紧身的,所以没有什
么特别不一样的感... 阅读全帖
w***n
发帖数: 9040
y******n
发帖数: 4527
21
来自主题: Running版 - timing and during of compression
都知道受伤了要RICE,其中的C就是compression。但是对这个操作的时间以及细节不大
了解。
请问版医及其他老中医朋友或传人啥的,应该从啥时候开始compression? How long
should it be?
y******n
发帖数: 4527
22
来自主题: Running版 - timing and during of compression
我踢球扭伤了脚,之后立刻冰敷,但没有compression。
24小时后开始热敷,这时候需要活血化淤,不知道是否需要compression

applied
afterward.
s********k
发帖数: 401
23
来自主题: Running版 - compression tights on sale
好像只有周三有效,我12点多试还有效的,现在没啦。。。
感觉compression的作用跟foam roller也差不多吧。是不是有了foam roller就不用
compression tights了?
s******y
发帖数: 352
24
it keeps your crotch dry.
only medium white color 9'' is 10.99
1. 7in short
http://www.ebay.com/itm/Under-Armour-Mens-HeatGear-Compression-
2. 9in short
http://www.ebay.com/itm/Under-Armour-Mens-HeatGear-Compression-
I got blue for 15.49. it is really good deal.
y****o
发帖数: 100
25
来自主题: Running版 - 问个Compression running pants的问题
问大家个问题:户外跑,温度40度左右,有点潮湿,55-60分钟。我习惯是里边带护膝
,然后穿普通的透气running pants。想试试compression pants,compression pants
保暖性如何?尤其是膝盖部位。有没有膝盖部位加厚的款?
谢谢
d******0
发帖数: 22800
26
来自主题: Running版 - 问个Compression running pants的问题
compression pants也是有厚有薄的,你看具体裤子的温度标志就可以了。你可以把护
膝带在compression pants外,pants都很紧身的。

pants
a*****n
发帖数: 748
27
If it is water it will be dry eventually, but it isn't, I had same issue
before, blew liquid air on the lens but never get dry, had to wipe it off
but got even worse, only the lens pen could finally do a pretty good job.
By the way, compress air is too strong for camera and lens, it could blow
the dust to a place that you can see but you can't reach :)

对压缩空气的偏见,各种lab或者fab的氮气和氩气都是compressed,从吹wafer到吹
CMOS,只要你管子够长,气化吸热完全,完全胜任您吹个lens。
j***n
发帖数: 301
28
来自主题: BuildingWeb版 - about http compression
Hi all,
I'm trying to take advantage of http compression / decompression feature men
tioned in RFC2616.
I have created two gziped files using unix gzip command: file1 and file2.
I deployed them to tomcat and wrote a simple program to set the appropriate
http header. In FF or IE the file can be browsed as regular page without run
time compression overhead at serverside.
When I concatenated file1 and file2 into one file, I was still able to decom
press them using Unix gzip command. What I got is a
g**********y
发帖数: 14569
29
Customer want compression, and we HAVE TO make them happy.
Actually I don't know what customer use in their production side. All I know
is that they said it is critical to have that compression feature.
s********k
发帖数: 6180
30
来自主题: Programming版 - deep learningmodel compression 主流方法
现在deep learningmodel compression 主流方法都有哪些?主要还是降低精度,比如
float到INT16或者INT8这样来做吗?线上的大系统真正用model compression多吗?
c**e
发帖数: 2
31
【 以下文字转载自 Software 讨论区 】
【 原文由 core 所发表 】
I try to gzip the realplayer file before I ftp, but
the file size is almost unchanged. I tried compress afterwards,
but the effect is even more ridiculous, the file size is larger.
Who has any better idea of file compress? I can't use Winzip since
I'm using Solaries.
l*t
发帖数: 14
32
Thre realplayer file was already compressed. So you won't see much difference
if you compress it again.

发帖数: 1
33
Hi biologists,
It's time to learn Math of Image Compression before a discussion about
picture quality, resolution or background noise can be initiated in this
scientific community.
http://www.ams.org/samplings/feature-column/fcarc-image-compression
r*****s
发帖数: 262
34
来自主题: EE版 - DFT compression问题
你的意思是
cadence的rc_compiler生成的compression逻辑,tetramax并不能
分析。是吗?
我知道rc_compiler生成的DFT without compression netlist是可以直接给
tetramax用的
O********9
发帖数: 59
35
来自主题: Mathematics版 - 什么是Compressive Sensing?
The data model of compressive sensing is y=A*x+e. y is an M-dimensional
vector of measurements, A is an M by N matrix, x is an N-dimensional vector
of signal and e the noise vector. There is only a limited number of
measurements, meaning M signal x from y by making use of the fast that x is a sparse vector.
If M>N, then one can estimate x by maximum-likelihood (equivalent to least-
squares method). However, when M
O********9
发帖数: 59
36
来自主题: Mathematics版 - 什么是Compressive Sensing?
The data model of compressive sensing is y=A*x+e. y is an M-dimensional
vector of measurements, A is an M by N matrix, x is an N-dimensional vector
of signal and e the noise vector. There is only a limited number of
measurements, meaning M signal x from y by making use of the fast that x is a sparse vector.
If M>N, then one can estimate x by maximum-likelihood (equivalent to least-
squares method). However, when M
s*******s
发帖数: 133
37
来自主题: ME版 - No-Compression Problem
最近在用ABAQUS算一个结构, 里面有一些tension-only的cable
用了材料属性里面那个no-compression的选项
发现计算很难稳定, 很难converge. 有没有哪位大侠对此有经验的?
查了一下ABAQUS的用户手册, 关于这个问题手册上说有时候可以
'can be overcomed by overlaying each element that uses the no compression
model with another element that uses a small value of modulus'
这个怎么理解?
s*******o
发帖数: 284
38
来自主题: Nursing版 - Saline Compression是啥东西
刚刚考完(学校的),有一题问chemical burn后,the most important intervention
是啥?
有两个选项让我犹豫不定,一个是remove jewery, 一个就是apply saline compression
.我的第一反应是应该马上用水冲,但是有没有此项,所以就选了乐saline compression.
后来怎么想也不对头.嗨,这次考试可能要载大头了!
M****a
发帖数: 577
39
下肢静脉曲张是医生诊断的?有没有深部静脉血栓?如果不清楚,建议去看一下血管外
科。
Compression stocking要Knee high,30mmHg的,我听说Sigvaris的还可以,其他牌子
不知道,你可以找一家药店问问,有可能要处方。
下肢静脉曲张一开始以保守治疗为主,除了compression stocking,一有机会,腿要尽
量翘起来,做到脚比心脏水平位置要高,另外还要尽量减少站立的时间。如果3-6个月
下来没有好转,再去看血管外科。
Good luck!
l******l
发帖数: 9
40
来自主题: _Graphics版 - 关于“texture compression”的话题
Thanks for your answers.
It has some relationship with my current research. Actually, I want to
investigate some kinds of image compression algorithms joint with
segmentation. The scheme would be built on wavelet scheme, specially in
JPEG2000 architecture, so I study some wavelet domain image segmentation.
After reading some references, I found most of the wavelet domian image
segmentation algorithms are for texture image. So I wonder something about
texture image compression. Is it useful in re
t******q
发帖数: 117
41
【 以下文字转载自 EE 讨论区,原文如下 】
发信人: con (earn money), 信区: EE
标 题: Re: 请问DCT可用于IMAGE COMPRESSION的关键原因是什么?
发信站: The unknown SPACE (Thu Aug 21 15:00:28 2003), 转信
there is fast DWT too.
Or they won't use at all.
In image compression, the key is the speed.
o**********e
发帖数: 18403
42
【 以下文字转载自 Military 讨论区 】
发信人: onetiemyshoe (onetiemyshoe), 信区: Military
标 题: 中文就是COMPRESSED HYPERTEXT
发信站: BBS 未名空间站 (Fri Sep 11 12:56:49 2015, 美东)
中文有个特色就是,喜欢压缩
成4字成语。 比如”守株待兔“
“爱屋及乌”。
古代”纸“贵,人的教育和记忆也贵,
人均寿命就那么30-40岁。中文
文化传宗接代需要的投资比别的语言更巨大。
中国用成语来高度压缩信息,用成语
和诗歌来做成HYPERTEXT,链接进入
各种经典文学历史的大部头。
这是中国国民教育3000年的SECRET
SAUCE。 所以老中别不识货哟!
s****i
发帖数: 857
43
今天测量了2005年Mazda 3S, 4 cylinder, 56K mile的dry compression test.
手册要求各缸压力:
standard: 199.1 psi;
minimum: 139.2 psi;
maximum difference: 28.5 psi;
我的测量数据: passenger side 到 driver side的4个cylinder依次为:
178 psi, 162 psi, 171 psi, 168 psi.
请指教:
1. 数据普遍偏低,考虑到10年老车以及pressure gauge的误差, 这个数据貌似正常. 第
二个162 psi偏低, 虽然在误差范围内. 有人做过测量,能共享一下数据吗?
2. 测量之前需要拆下火花塞, 第一个火花塞拆下来发现头部的螺纹上沾满了油,像是机
油 (当时疏忽了没有好好观察是机油还是汽油). 其他三个火花塞没有此现象. 但是我
的车不烧机油, 平常机油自己换,查的也很勤. 请问... 阅读全帖
I******i
发帖数: 203
44
我的03年的福特车引擎灯亮了,去检查了一下,说是有个cylinder, misfire due to
Low Compression。 修车行的建议说要打开引擎,rebuild valve。 具体的我也不太懂
,就是觉得好贵 , 修一下要1.2k 到1.5k。 之前刚花了$600做维护,没想到不到1星
期引擎灯又亮了,目前开了12万迈,还没换过timing belt,估计继续开的话,timing
belt也该换了。
我想问下,如果我不修继续开的话,会有什么风险,主要是买菜,需要上高速,这种情
况还能坚持开多久?感觉很多部件都有问题,修车不如买新车了。
谢谢!
a***e
发帖数: 27968
45
啥车,不是啥车都带timing belt的
low compression可能是筏漏气,先看看哪里漏再说

to
timing
c**d
发帖数: 3888
46
Compression 并不是很重要的引擎健康指数。但如果低于 130 就有些太低了。通常都
是valve的问题。
r****o
发帖数: 1950
47
find it hard to compress,
The paper sections include abstract, introduction, proposed work, simulation
, conclusion, bibliography, etc.
Anyone have suggestion?
a****e
发帖数: 95
v******u
发帖数: 5
49
请问可以帮忙referral for Intel吗?
BTW,请问有做image processing and video compression的可以推荐吗?
若有,请发站内邮件,非常感谢!
r*****e
发帖数: 792
50
来自主题: JobHunting版 - 问个题:how to compress a prefix tree
出题的人是不是假设tree的每个node都占用26个字母,假设不考虑大小写,也没有
其他符号的话。那compress这个tree就是用list表示每个node,这样算完成要求吗?
或者用ternary tree,不过这样相应的算法都都要变了,虽然可能是个space
efficient的表示方式。
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