quantum conundrum

}ilikesanpanilikeluoswimming[[emailprotected] scripts]#echo${liuyifei%like*}ilikesanpani[[emailprotected] Scripts]#echo${liuyifei%%like*}i========================${string/substring/replace} replaces the first encountered match character${string/#substring/replace} prefix match, must match all, replace a strip${string/%substring/replace} forward, replace the last encountered match character, must match all[[email protected] scripts]# echo ${liuyifei/like/love}I love Sanpan i like Luo swimming[[em

I just read the article about oracle efficient design. When it comes to Standard Quantum queries in oracle, the performance depends on associated queries, however, I know in SQL server that the performance of associated queries is better than that of scalar queries. Let's test the performance by executing the statement: Code highlighting produced by Actipro CodeHighlighter (freeware)http://www.CodeHighlighter.com/-->Set autotrace on Select a. username

Common operation of variable quantum strings${#string} Returns the length of the $string${#string:p Osition} in $string, start extracting substrings from position $position${#string:p Osition:length} in $string, extract the substring of length $length starting from the position $position${string#substring} deletes the shortest match $substring substring starting at the beginning of the variable $string${string# #substring} deletes the longest matching

1986 Indian scientist Abhay Ashtekar (1949-) The use of quantum space-time concept to re-write Einstein's General Theory of relativity (gravitational theory), triggering a new round of theoretical physics, "quantization" of the international wave. For nearly 20 years, a new branch has emerged in theoretical physics: Quantum Geometry ( Quantum Geometry ). Later, s

Quantum Computing brings about the possibility of ultra-high speed and ultra-efficient processing. search engine giant Google is also on the forefront of this field.New Scientist says Google has been studying a quantum algorithm that can automatically identify and classify images or videos over the past three years. Quantum Computing focuses on the singular physi

${variable/#substring/replace} if the $string prefix matches $substring, $replace is used instead of matching $substring${variable/%substring/replace} if $string end matches $substring, use $replace instead of match $substring#!/bin/shfor i in $ (ls |grep "jpg$");d Oi=${i/%jpg/mp4}doneResults:[Email protected] ~]# sh for2.sh stu_10299_1_.mp4stu_10299_2_.mp4stu_10299_3_.mp4stu_10299_4_.mp4stu_10299_5_.mp4V. Substitution of variables${value:-word} If the variable value has an assignment, use th

others: The topic gives NOP operation, by N (do Nothing), S (1), C (0), F (reverse) and other basic operations, each operation will produce different heat. The initial string and the target string of the NW group are given, which require the heat to be generated at least to convert the initial string into the target string, and there may be no solution at this time to output "NP"Direct BFS, similar to DFS's brute force enumeration, the queue loops, each time to sweep all the NOP operations, and

(Defprotocol X (cat [this other])Define a protocol, which is similar to the objective-C protocol. Different from Java interfaces. User => X {: On-interface user. x,: on user. x,: Sigs {: CAT {: Doc nil,: arglists ([this other]),: Name cat }},: var # 'user/X ,: method-map {: Cat: CAT },: method-builders {# 'user/cat # User => (extend-type string X (cat [this other] (. Concat this other )))This is the objc style. Define a function as an implementation of a type under a protocol. User => (Ca

Lord Riley and Sir James Kings, a British scientist, have calculated that a hot object (such as a star) must radiate energy at an infinitely large rate, which means that the energy emitted must also be infinite.To avoid this ridiculous conclusion, the German scientist Max Planck proposed in 1900 that light waves and other waves could not radiate at any rate, but only in the case of a wave packet called a quantum. In addition, each

When information transmission encryption is involved, quantum encryption is the most stable. No matter how clever the eavesdropping technology is, theoretically there is no way to implement eavesdropping. however, this is only theoretically a protocol that involves information transmission. If our protocol has a vulnerability, it is still possible to steal information. feihu Xu, Bing Qi, and Hoi-Kwong Lo from the University of Toronto, Canada, recentl

When using htb, sometimes the htb quantum of class 10001 is big. Consider r2q change warning is encountered, and quantum is the computing basis for the htb subclass to use the parent class bandwidth. If this parameter is not set properly, unexpected results may occur. Htb Manual suggests that the quantum value should be smaller than MTU. In this way, the best va

Google R D quantum AlgorithmUsed for image search Hartmut Neven, head of the Google Image Recognition Technology Group, revealed in the Google research blog this week that Google is preparing to use quantum computers for Object Recognition in images and videos, In the Nips (neural Information Processing System) at the 2009 Conference, Google demonstrated the progress of this study. Using tests to identif

the outer left join is missing a plus sign, modify Statement 2 to make it equivalent to Statement 1. Statement 3: select l.*,o.object_name from v$locked_object l,all_objects o where l.object_id=o.object_id(+);It is also very slow to change to an equivalent value. Although Statement 2 is not equivalent, why is Statement 2 faster than Statement 1 and Statement 3? After reading the execution plan for a while, I understood it. In statement 1, OBJ $ uses the entire table, and in statement 2, OBJ $

Statement: For Wang Yangming's mind and quantum physics, I don't know much about it, but I can only know nothing about it. The following are all about it. In the Netease Open Class, I heard Professor Dong ping from Zhejiang University talk about Wang Yangming's learning. He has his own opinions on whether Yangming's learning is idealistic. It is very interesting to have an understanding of the most famous conversation in Yangming Xinxue. Mr. youna

years, humans can calculate it completely !" The destructive power of quantum physics is amazing. Among the three core principles of Probability Interpretation, uncertainty principle and complementarity principle, the first two destroyed the cause and effect of the classic World. The complementary principle and uncertainty principle combined together destroyed the objectivity and authenticity of the world. The weather will never be predicted, and t

Qgis is an open source desktop GIS tool written with QT framework. It is a good tool for learning GIS and QT. This article describes how to compile the source code of qgis In ubuntu. Reference link: Http://gvision.info/using-qtcreator-with-qgis/ Http://hub.qgis.org/projects/quantum-gis/repository/revisions/master/entry/INSTALL Environment: Ubuntu 11.10 1. Dependent tool set: -Cmake> = 2.6.2 -Flex -Bison >=2.4 Ii. Dependent libraries: -QT> = 4.4.0 -

Oracle scalar queries and their own defined functions are sometimes easier to use, and are often used by developers. Small amount of data does not matter. The amount of data is large and there are often performance problems.Here is a test to help you understand the scalar quantum query thoroughly. Sql> CREATE TABLE A (ID int,name varchar2 (10)); Table created. Sql> CREATE TABLE B (ID int,name varchar2 (10)); Table created. Sql> INSERT into a values (1

Label:The statement to be optimized is as follows SelectA.code asCode, A.m_code asM_code,a.stktype asF_stype,a.e_year asE_year, B.sname asSname,a.c_date asC_date,to_char (Sysdate,'YYYYMMDD') asCreatetime, To_char (Sysdate,'YYYYMMDD') asUpdateTime, (Select sum(VALUEF2) fromA TwhereT.code=A.code andT.c_datebetweenTo_char (To_date (A.c_date,'YYYYMMDD')- the,'YYYYMMDD') andA.c_date andT.e_year=a.e_year) e70115_70011, (Select sum(VALUEF1) fromA TwhereT.code=A.code andT.c_datebetweenTo_char (To_date (

Release date:Updated on: Affected Systems:Schneider Electric Modicon QuantumDescription:--------------------------------------------------------------------------------Bugtraq id: 51605Cve id: CVE-2012-0929, CVE-2012-0930, CVE-2012-0931 Schneider Electric is a company that has been committed to improving customers' performance and daily living standards in the power industry. Schneider Electric Group provides products and services for energy and infrastructure, industry, data centers and network

1. Laser(1) Laser principleEinstein's Radiation Theory:Spontaneous emission: The process by which an atom transitions from an energetic state to a low-energy state and emits photons, i.e. H (v) =e2- E1Stimulated radiation: stimulated radiation light amplification is the basic mechanism of laser generation. N21=b21ρ (v) N2Stimulated absorption: n12=b12ρ (v) N1The relationship between Einstein coefficients A12, B21 and B12:A21n2+b21ρ (v) n2=b12ρ(v) N1(2) necessary conditions for laser generationPa