Article: Beyonce has received praise for her stage presence and voice during live performances. Jarett Wieselman of the New York Post placed her at number one on her list of the Five Best Singer/Dancers. According to Barbara Ellen of The Guardian Beyonce is the most in-charge female artist she's seen onstage, while Alice Jones of The Independent wrote she "takes her role as entertainer so seriously she's almost too good." The ex-President of Def Jam L.A. Reid has described Beyonce as the greatest entertainer alive. Jim Farber of the Daily News and Stephanie Classen of Star Phoenix both praised her strong voice and her stage presence.

Question: What characteristics has Beyonce received acclaim for?
Ans: stage presence and voice

Article: The Head of State of Portugal is the President of the Republic, elected to a five-year term by direct, universal suffrage. He or she has also supervision and reserve powers. These powers are often compared[by whom?] with the "moderator power" that was held by the King in the Portuguese Constitutional Monarchy.[citation needed] Presidential powers include the appointment of the Prime Minister and the other members of the Government (where the President takes into account the results of legislative elections); dismissing the Prime Minister; dissolving the Assembly of the Republic (to call early elections); vetoing legislation (which may be overridden by the Assembly with a supermajority); and declaring a state of war or siege. The President is also the ex officio Commander-in-Chief of the Armed Forces.

Question: By what means is the President of the Republic elected?
Ans: by direct, universal suffrage

Article: Protestantism has had an important influence on science. According to the Merton Thesis, there was a positive correlation between the rise of English Puritanism and German Pietism on the one hand and early experimental science on the other. The Merton Thesis has two separate parts: Firstly, it presents a theory that science changes due to an accumulation of observations and improvement in experimental technique and methodology; secondly, it puts forward the argument that the popularity of science in 17th-century England and the religious demography of the Royal Society (English scientists of that time were predominantly Puritans or other Protestants) can be explained by a correlation between Protestantism and the scientific values. Merton focused on English Puritanism and German Pietism as having been responsible for the development of the scientific revolution of the 17th and 18th centuries. He explained that the connection between religious affiliation and interest in science was the result of a significant synergy between the ascetic Protestant values and those of modern science. Protestant values encouraged scientific research by allowing science to identify God's influence on the worldhis creationand thus providing a religious justification for scientific research.

Question: What other reason did Merton believe causes science to advance?
Ans: an accumulation of observations and improvement in experimental technique and methodology

Article: This is a consequence of Lorentz reciprocity. For an antenna element not connected to anything (open circuited) one can write . But for an element which is short circuited, a current is generated across that short but no voltage is allowed, so the corresponding . This is the case, for instance, with the so-called parasitic elements of a Yagi-Uda antenna where the solid rod can be viewed as a dipole antenna shorted across its feedpoint. Parasitic elements are unpowered elements that absorb and reradiate RF energy according to the induced current calculated using such a system of equations.

Question: What element absorbs and reradiate RF-energy?
Ans:
Parasitic