| Pennsylvania Pennsylvania
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| Palmyra Atoll Palmyra Atoll () is an incorporated atoll administered by the United States federal government. The atoll is 4.6 square miles (12Pacific Ocean at Palmyra_Atoll
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| History of Panama History_of_Panama
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| Politics of Puerto Rico Puerto Rico, officially the Commonwealth of Puerto Rico (), a commonwealth of the United States. Puerto Rico is an archipelago located in the northeastern Caribbean, east of the Dominican Republic and west of the Virgin Islands, approximately 1,280 miles (2,000 kilometer) off the coast of Florida (the nearest of the mainland United States). Politics_of_Puerto_Rico
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| Potato Potato
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| Police Police are agents or agencies, usually of the executive, empowered to enforce the law and to ensure public and social order through the legitimized use of force. Police
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| Perjury Perjury, also known as forswearing, is the willful act of swearing a false oath or affirmation to tell the truth, whether spoken or in writing, concerning matters material to a judicial proceeding. That is, the matter lied about would affect the outcome of the case. It is not considered perjury, for example, to lie about one's age, unless that person's age is a key factor in proving the case, such as eligibility for old age retirement benefits. Perjury
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| Propeller propeller is a type of fan which transmits power by converting rotational motion into thrust. It can be used to drive an aircraft, ship, or the fluid within a pump. It consists of one or more blades about a central shaft and operates like a rotating screw or wing. A pressure difference between the forward and rear surfaces of the airfoil-shaped blade is produced and air or water accelerated behind the blade. Propeller dynamics can be modeled by both Bernoulli's principle and Newton's third law. Propeller
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| Phrenology Phrenology (from Greek:phrēn, "mind"; and λόγος, logos, "knowledge") is a theory stating that the personality traits of a person can be derived from the shape of the skull. It is now considered a pseudoscience. Developed by German physician Franz Joseph Gall in 1796, the discipline was very popular in the 19th century. Phrenology
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| Palestine Talk:Palestine
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| President of the United States The President of the United States is the head of state and head of government of the United States and is the highest political official in the United States by influence and recognition. The President leads the executive branch of the federal government and is one of only two nationally-elected federal officers (the other being the Vice President of the United States).Among other powers and responsibilities, Article II of the U.S. President_of_the_United_States
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| Pseudocode Pseudocode is a compact and informal high-level description of a computer programming algorithm that uses the structural conventions of some programming language, but is intended for human reading rather than machine reading. Pseudo-code typically omits details that are not essential for human understanding of the algorithm, such as variable declarations, system-specific code and subroutines. Pseudocode
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| Philistines Philistines (Hebrew פְלִשְׁתִּים, p'lishtim, lit. "invaders" ,Arabic الفلسطينيون) (see "other uses" below) were a people who occupied the southern coast of Canaan, their territory being named Philistia in later contexts. Their origin has been debated among scholars. Philistines
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| Palestine Liberation Organization The Palestine Liberation Organization (PLO) (; ) is a political and paramilitary organization founded in 1964 and regarded by the Arab League since October 1974 as the "sole legitimate representative of the Palestinian people." Palestine_Liberation_Organization
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| PH pH is a measure of the acidity or basicity of a solution. It is defined as the cologarithm of the activity of dissolved hydrogen ions (H+). Hydrogen ion activity coefficients cannot be measured experimentally, so they are based on theoretical calculations. The pH scale is not an absolute scale; it is relative to a set of standard solutions whose pH is established by international agreement. PH
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| Intact dilation and extraction Intact dilation and extraction (IDX or intact D&X), also known as intact dilation and evacuation (intact D&E), dilation and extraction (D&X), intrauterine cranial decompression and controversially in the United States as partial birth abortion, is a surgical abortion wherein an intact fetus is removed from the uterus via the cervix. The procedure may also be used to remove a deceased fetus that is developed enough to require dilation of the cervix for its extraction. Intact_dilation_and_extraction
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| Picts Picts were a confederation of tribes in what was later to become eastern and northern Scotland from before the Roman conquest until the 10th century. They lived to the north of the Forth and Clyde rivers. They are assumed to have been the descendants of the Caledonii and other tribes named by Roman historians or found on the world map of Ptolemy. Picts
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| Peace Peace (, , , Symbol☮) is a term that most commonly refers to an absence of aggression, violence or hostility, but which also represents a larger concept wherein there are healthy or newly-healed interpersonal or international relationships, safety in matters of social or economic welfare, the acknowledgment of equality and fairness in political relationships and, in world matters, peacetime; a state of being absent of any war or conflict. Peace
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| Pie menu pie menu (also known as a radial menu or marking menu) is a circular context menu where selection depends on direction. A pie menu is made of several "pie slices" around an inactive center and works best with stylus input, and well with a mouse. Pie menus work well with keyboard acceleration, particularly four and eight item menus, on the cursor keys and the number pad.A goal of pie menus is to provide a smooth, reliable gestural style of interaction for novices and experts. Pie_menu
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| Quantum mechanics Quantum mechanics is a set of principles underlying the most fundamental known description of all physical systems at the submicroscopic scale Quantum_mechanics
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| Rational choice theory Rational choice theory, also known as rational action theory, is a framework for understanding and often formally modeling social and economic behavior. It is the dominant theoretical paradigm in microeconomics. It is also central to modern political science and is used by scholars in other disciplines such as sociology and philosophy. Rational_choice_theory
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| Robot A robot is a virtual or mechanical artificial agent. In practice, it is usually an electro-mechanical system which, by its appearance or movements, conveys a sense that it has intent or agency of its own. The word robot can refer to both physical robots and virtual software agents, but the latter are usually referred to as bots. There is no consensus on which machines qualify as robots, but there is general agreement among experts and the public that robots tend to do some or all of the following Robot
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| Rem Koolhaas Remment Lucas Koolhaas (; born ) is a Dutch architect, architectural theorist, urbanist and "Professor in Practice of Architecture and Urban Design" at the Graduate School of Design at Harvard University, USA. Koolhaas studied at the Netherlands Film and Television Academy in Amsterdam, at the Architectural Association School of Architecture in London and at Cornell University in Ithaca, New York. Rem_Koolhaas
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| Ray tracing (graphics) In computer graphics, ray tracing is a technique for generating an image by tracing the path of light through pixels in an image plane. The technique is capable of producing a very high degree of photorealism; usually higher than that of typical scanline rendering methods, but at a greater computational cost. Ray_tracing_(graphics)
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| Rules of evidence Rules of evidence govern whether, when, how, and for what purpose proof of a case may be placed before a trier of fact for consideration. In the legal systems of Canada and the United States, the trier of fact may be a judge or a jury, depending on the purpose of the trial and the choices of the parties.The rules of evidence developed over several centuries and are based upon the rules from Anglo-American common Law brought to the New World by early settlers. Rules_of_evidence
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| Racketeer Influenced and Corrupt Organizations Act Racketeer Influenced and Corrupt Organizations Act (commonly referred to as RICO Act or RICO) is a United States federal law that provides for extended criminal penalties and a civil cause of action for acts performed as part of an ongoing criminal organization. Racketeer_Influenced_and_Corrupt_Organizations_Act
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| Radiometric dating Radiometric dating (often called radioactive dating) is a technique used to date materials, usually based on a comparison between the observed abundance of a naturally occurring radioactive isotope and its decay products, using known decay rates. It is the principal source of information about the absolute age of rocks and other geological features, including the age of the Earth itself, and can be used to date a wide range of natural and man-made materials. Radiometric_dating
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| Rainer Maria Rilke Rainer Maria Rilke (also Rainer Maria von Rilke) (4 December 1875 German language's greatest 20th-century poets. His haunting images focus on the difficulty of communion with the ineffable in an age of disbelief, solitude, and profound anxiety:modernist poets.He wrote in both verse and a highly lyrical prose. Rainer_Maria_Rilke
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| Restaurant restaurant prepares and serves food and drink to customers. Meals are generally served and eaten on premises, but many restaurants also offer take-out and food delivery services. Restaurants vary greatly in appearance and offerings, including a wide variety of cuisines and service models.A restaurant owner is called a restaurateur; both words derive from the French verb restaurer, meaning "to restore". Restaurant
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| Roald Hoffmann Roald Hoffmann (born July 18, 1937) is a Polish-American theoretical chemist who won the 1981 Nobel Prize in Chemistry. He currently teaches at Cornell University in Ithaca, New York. Roald_Hoffmann
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| Solar System Solar System consists of the Sun and those celestial objects bound to it by gravity, all of which formed from the collapse of a giant molecular cloud approximately 4.6 billion years ago. The Sun's retinue of objects circle it in a nearly flat disc called the ecliptic plane, most of the mass of which is contained within eight relatively solitary planets whose orbits are almost circular. Solar_System
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| Stanford University Stanford_University
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| Steel Steel is an alloy consisting mostly of iron, with a carbon content between 0.2% and 2.14% by weight (Cmanganese, chromium, vanadium, and tungsten. Carbon and other elements act as a hardening agent, preventing dislocations in the iron atom crystal lattice from sliding past one another. Steel
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| Sexism Sexism, a term coined in the mid-20th century, refers to the belief or attitude that one gender or sex is inferior to, less competent, or less valuable than the other. It can also refer to hatred of, or prejudice towards, either sex as a whole (see misogyny and misandry), or the application of stereotypes of masculinity in relation to men, or of femininity in relation to women. Sexism
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| Solanaceae Solanaceae
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| Economy of South Africa South Africa has a two-tiered economy; one rivaling other developed countries and the other with only the most basic infrastructure. It is therefore a productive and industrialised economy that exhibits many characteristics associated with developing countries, including a division of labour between formal and informal sectors and an uneven distribution of wealth and income. The primary sector, based on manufacturing, services, mining, and agriculture, is well developed. Economy_of_South_Africa
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| Section 508 Amendment to the Rehabilitation Act of 1973 Rehabilitation Act to require Federal agencies to make their electronic and information technology accessible to people with disabilities. Inaccessible technology interferes with an individual's ability to obtain and use information quickly and easily. Section 508 was enacted to eliminate barriers in information technology, to make available new opportunities for people with disabilities, and to encourage development of technologies that will help achieve these goals. Section_508_Amendment_to_the_Rehabilitation_Act_of_1973
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| Systems engineering Systems engineering is an interdisciplinary field of engineering that focuses on how complex engineering projects should be designed and managed. Issues such as logistics, the coordination of different teams, and automatic control of machinery become more difficult when dealing with large, complex projects. Systems engineering deals with work-processes and tools to handle such projects, and it overlaps with both technical and human-centered disciplines such as control engineering and project management. Systems_engineering
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| Small arms Small arms is a general term used by the armed forces to refer to infantry weapons, such as the firearms that an individual soldier can carry. It is usually limited to revolvers, pistols, submachine guns, shotguns, carbines, assault rifles, rifles, sniper rifles, squad automatic weapons, light machine guns, general purpose machine guns, medium machine guns, and sometimes hand grenades. Small_arms
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| Responsibility for the September 11 attacks Soon after the September 11 attacks, the Federal Bureau of Investigation was able to identify the 19 hijackers and connect them to al-Qaeda. In a number of video, audio, interview and printed statements, senior members of al-Qaida have also admitted responsibility for organizing the September 11 attacks. Responsibility_for_the_September_11_attacks
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| Samaritan Samaritan
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| String theory String theory is a developing branch of theoretical physics that combines quantum mechanics and general relativity into a quantum theory of gravity. The strings of string theory are one-dimensional oscillating lines, but they are no longer considered fundamental to the theory, which can be formulated in terms of points or surfaces, too. String_theory
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| Syracuse, New York Syracuse (locally , generally Syracuse,_New_York
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| Summary offence summary offence, also known as a petty crime, is a criminal act in some common law jurisdictions that can be proceeded with summarily, without the right to a jury trial and/or indictment. Summary_offence
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| Southeast Asia Southeast Asia Southeast_Asia
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| Split infinitive A split infinitive or cleft infinitive is an English-language grammatical construction in which a word or phrase, usually an adverb or other adverbial, comes between the marker to and the bare infinitive (uninflected) form of a verb. A famous split infinitive occurs in the opening sequence of the Star Trek television seriesto boldly go where no man has gone before. Split_infinitive
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| Suburb Suburbs are commonly defined as smaller residential communities lying immediately outside a city. In the United States, suburbs have a prevalence of usually detached single-family homes. Some suburbs have a degree of political autonomy, and most have lower population density than inner city neighborhoods. Suburb
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| Spyware Spyware is computer software that is installed surreptitiously on a personal computer to collect information about a user, their computer or browsing habits without the user's informed consent.While the term spyware suggests software that secretly monitors the user's behavior, the functions of spyware extend well beyond simple monitoring. Spyware
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| Statute of frauds The statute of frauds refers to the requirement that certain kinds of contracts be made in writing and signed.Traditionally, the statute of frauds requires a writing signed by the defendant in the following circumstances Contracts in consideration of marriage. Statute_of_frauds
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| Square root mathematics, a square root of a number x is a number n such that n2 = x, or, in other words, a number n whose square (the result of multiplying the number by itself) is x. Every non-negative real number x has a unique non-negative square root, called the principal square root, which is denoted with a radical symbol as , or, using exponent notation, as x1/2. Square_root
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