With the development of the internet, the issue of information leakage has been more and more serious. The definition of an information leakage is that secret information is stolen by others through hacker’s attack, copying, sending, printing or screen shooting.
Most individual information leakages are caused by hackers. This can be prevented by through antivirus software. Most corporate information leakages are caused by people in the company. Preventing corporate information leakage is more difficult. In 2003, the FBI and the CSI did research, the result shows that only 30 percent of information leakage accidents are caused by people outside the organization. That is because people inside are familiar with the regulation and more likely to find the information. Encrypting the information is an important way to stop corporate information leakages.
Sistema Brasileiro de Televisão
Sistema Brasileiro de Televisão, or simply SBT is a Brazilian television network launched by Silvio Santos on 1981.
Doug Savant
Jeremy Renner (born June 21, 1964) is an American actor. He is known for his role in the television "Desperate Housewives".
Lynda Carter
Lynda Jean Carter (born July 24, 1951) is an American actress and singer. She is best known for being Miss USA (1973) and as the star of the 1970s television series "Wonder Woman" (1975–77) and "The New Adventures of Wonder Woman" (1977–79).
Australia national cricket team
The Australian cricket team is the national cricket team of Australia. It is the joint oldest team in Test cricket. They were in the first Test match in 1877. The team also plays One Day International cricket and Twenty20 International. They were in the first ODI, against England in the 1970–71 season. They were in the first Twenty20 International, against New Zealand in the 2004–05 season. They won both games.
The Australian team has played 744 Test matches, winning 350, losing 194, drawing 198 and tying two. Australia is ranked the number-one team overall in Test cricket in terms of overall wins, win-loss ratio and wins percentage. Australia is ranked fourth in the ICC Test Championship behind England, South Africa and India. They led the Test rankings for a record time of 74 months from 2003 to 2009.
Australia has played 797 ODI matches, winning 490, losing 272, tying nine and with 26 ending in no-result. They have led the ICC ODI Championship since it started for all but 48 days in 2007. Australia made a record six World Cup final appearances (1975, 1987, 1996, 1999, 2003 and 2007). They have won the World Cup a record four times in total; 1987 Cricket World Cup, 1999 Cricket World Cup, 2003 Cricket World Cup and 2007 Cricket World Cup. Australia is the first team to be in 4 consecutive World Cup finals (1996, 1999, 2003 and 2007).
The team was undefeated in 34 consecutive World Cup matches until 19 March at the 2011 Cricket World Cup. There Pakistan beat them by 4 wickets. Australia won the ICC Champions Trophy twice – in 2006 and in 2009 – making them the first and the only team to become back to back winners in the Champions Trophy tournaments. The team has also played 39 Twenty20 Internationals.
Twenty20 International
A Twenty20 International (T20I) is a form of cricket which is played over 20 overs per side between two national cricket teams. The game is played under the rules of Twenty20 cricket. The first Twenty20 International took place on 17 February 2005. Australia defeated New Zealand by 44 runs at Eden Park in Auckland. The International Cricket Council gave rankings for the shortest format of the game on October 24, 2011 with England at top.
The nations are listed below with the date of each nation's Twenty20 International debut shown in brackets.
Reynaldo Hahn
Reynaldo Hahn (August 9, 1874 – January 28, 1947) was a French composer, conductor, music critic and diarist (he wrote a diary). He was famous for his songs. He wrote the music (which was considered "insipid") for the ballet "Le Dieu bleu". The ballet was a failure and the music was blamed.
Gaussian elimination
In mathematics, Gaussian elimination (also called row reduction) is a method used to solve systems of linear equations. It is named after Carl Friedrich Gauss, a famous German mathematician who wrote about this method, but did not invent it.
To perform Gaussian elimination, the coefficients of the terms in the system of linear equations are used to create a type of matrix called an augmented matrix. Then, elementary row operations are used to simplify the matrix. The three types of row operations used are:
The goal of Gaussian elimination is to get the matrix in "row-echelon form". If a matrix is in row-echelon form, that means that reading from left to right, each row will start with at least one more zero term than the row above it. Some definitions of Gaussian elimination say that the matrix result has to be in "reduced row-echelon form". That means that the matrix is in row-echelon form and the only non-zero term in each row is 1. Gaussian elimination that creates a reduced row-echelon matrix result is sometimes called Gauss-Jordan elimination.
Suppose the goal is to find the answers to this system of linear equations.
First, the system needs to be turned into an augmented matrix. In an augmented matrix, each linear equation becomes a row. On one side of the augmented matrix, the coefficients of each term in the linear equation become numbers in the matrix. On the other side of the augmented matrix are the constant terms each linear equation is equal to. For this system, the augmented matrix is:
Then, row operations can be done on the augmented matrix to simplify it. The table below shows the row reduction process on the system of equations and on the augmented matrix.
The matrix is now in row-echelon form. This is also called "triangular form".
The matrix is now in reduced row-echelon form. Reading this matrix tells us that the solutions for this system of equations occur when x = 2, y = 3, and z = -1.
Bronislava Nijinska
Bronislava Nijinska (8 January 1891 [old style 27 December 1890] – 22 February 1972) was a Russian ballerina, choreographer, and teacher of Polish descent. Her parents were dancers. She was one of three siblings and the sister of the famous ballet dancer, Vaslav Nijinsky.
When she was very young, Nijinska learned to dance at home. Her parents taught her Polish, Hungarian, Italian, and Russian folk dances. Her father also taught her some acrobatics. This helped her later with her choreography.
She was only four years old when she made her debut in a Christmas program with her brothers in Nizhny Novgorod. Nijinska trained with the Italian dancer, Enrico Cecchetti, before joining the Imperial Ballet School in 1900. She was a student there until 1908. Her teachers were Nicolai Legat and Mikhail Fokine.
She danced with the Imperial Ballet in St. Petersburg and the Ballets Russes. She was a choreographer for the Ballets Russes, with important modernist dance titles to her credit: "Les Noces" (1923), "Le Train Bleu" (1924) and "Les Biches" (1924). She guided the re-creation of these works in modern times.
She died in Pacific Palisades, California. She was twice married and had two children.
Federico de Madrazo y Ochoa
Federico de Madrazo y Ochoa (1875-1935) was a Spanish painter working in and around Madrid. He was part of a famous family of Spanish artists which included his father Raimundo de Madrazo, his uncle Ricardo de Madrazo y Garreta, his grandfather, Federico de Madrazo y Kuntz, and his great grandfather José de Madrazo. He worked together with Jean Cocteau to write a ballet, the "Le Dieu bleu" ("The Blue God"), in 1912 for Serge Diaghilev's Ballets Russes. Music for the ballet was composed by Reynaldo Hahn.
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