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71-492: The mobile field force concept originated with the Miami-Dade Police Department in the 1980s. Use of the mobile field force concept gained popularity among police departments due to the realization that traditional riot control tactics involving large echelons of police recapturing entire streets from protesters only served to move the unrest from one area to the next. By contrast, the mobile field force

142-613: A platoon , consisting of four 8-officer squads . An MFF squad includes one grenadier who is responsible for deploying riot control agents and other less-lethal munitions using a riot gun . An 8-officer squad uses two marked patrol vehicles for mobility. A platoon is usually accompanied by multiple prisoner transport vehicles . Civil disorder Civil disorder , also known as civil disturbance , civil unrest , civil strife , or turmoil , are situations when law enforcement struggle to maintain public order or tranquility. Any number of things may cause civil disorder, whether it

213-430: A soft cover . Magazines fall into two broad categories: consumer magazines and business magazines. In practice, magazines are a subset of periodicals , distinct from those periodicals produced by scientific, artistic, academic or special interest publishers which are subscription-only, more expensive, narrowly limited in circulation, and often have little or no advertising. Magazines can be classified as: A newspaper

284-488: A book resembling a photo album. The first collection of records to be called an "album" was Tchaikovsky 's Nutcracker Suite , release in April 1909 as a four-disc set by Odeon Records . It retailed for 16 shillings —about £ 15 in modern currency. A music video (also promo) is a short film or video that accompanies a complete piece of music, most commonly a song . Modern music videos were primarily made and used as

355-438: A catchall phrase that encompasses the aforementioned along with any game made for any other device, including, but not limited to, advanced calculators, mobile phones, PDAs , etc. Sound recording and reproduction is the electrical or mechanical re-creation or amplification of sound , often as music . This involves the use of audio equipment such as microphones, recording devices and loudspeakers. From early beginnings with

426-538: A crowd turns violent, effectively becoming a "mob," it may execute physical attacks on people and property, such as by throwing homemade weapons like Molotov cocktails , firing small arms, and planting improvised explosive devices . A crowd may resort to throwing rocks , bricks, bottles, etc. If violence is pre-arranged, the crowd can hide their weapons or vandalism tools well before the crowd formation, catching law enforcement by surprise. Crowds may arm themselves with: A mob may erect barricades to impede, or prevent,

497-456: A crowd's mood, radicals can manipulate and weaponize a crowd, using skillful agitation to coax the crowd's capacity for violence and turn it into a vengeful mob , directing the crowd's aggression and resentment at the agitator's chosen target. Tactical agitators can leverage media, including social media , to connect with potential crowd members and incite them to break the law or provoke others, all without direct personal contact. Conversely,

568-526: A crowd. Mass media Mass media include the diverse arrays of media that reach a large audience via mass communication . Broadcast media transmit information electronically via media such as films , radio , recorded music, or television . Digital media comprises both Internet and mobile mass communication. Internet media comprise such services as email , social media sites, websites , and Internet-based radio and television. Many other mass media outlets have an additional presence on

639-492: A device used to access a mass medium (the Internet). Video games may also be evolving into a mass medium. Video games (for example, massively multiplayer online role-playing games (MMORPGs), such as RuneScape ) provide a common gaming experience to millions of users across the globe and convey the same messages and ideologies to all their users. Users sometimes share the experience with one another by playing online. Excluding

710-430: A group to emerge when no authoritative voice emerges, and the crowd becomes frustrated without direction. Panic, which is extremely and quickly contagious, also affects crowd behavior by influencing their ability to reason, lending to frantic, irrational behavior that can not only endanger the crowd, but also others. During civil disorder, panic can set in when a crowd member realizes – A goal of violent demonstrators

781-684: A marketing device intended to promote the sale of music recordings. Although the origins of music videos go back much further, they came into their own in the 1980s, when Music Television 's format was based on them. In the 1980s, the term "rock video" was often used to describe this form of entertainment, although the term has fallen into disuse. Music videos can accommodate all styles of filmmaking, including animation , live-action films, documentaries , and non-narrative, abstract film . The Internet (also known simply as "the Net" or less precisely as "the Web")

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852-424: A more powerful media than either TV or the internet, starting with mobile being permanently carried and always connected. Mobile has the best audience accuracy and is the only mass media with a built-in payment channel available to every user without any credit cards or PayPal accounts or even an age limit. Mobile is often called the 7th Mass Medium and either the fourth screen (if counting cinema, TV and PC screens) or

923-457: A newspaper, or watching the 10 o'clock news, people can log onto the internet to get the news they want, when they want it. For example, many workers listen to the radio through the Internet while sitting at their desk. Even the education system relies on the Internet. Teachers can contact the entire class by sending one e-mail. They may have web pages on which students can get another copy of

994-612: A number of technologies combined to produce podcasting . Podcasting is an asynchronous broadcast/narrowcast medium. Adam Curry and his associates, the Podshow , are principal proponents of podcasting. The term ' film ' encompasses motion pictures as individual projects, as well as the field in general. The name comes from the photographic film (also called film stock ), historically the primary medium for recording and displaying motion pictures. Many other terms for film exist, such as motion pictures (or just pictures and "picture"),

1065-462: A particular subject; others function as more personal online diaries. A typical blog combines text, images and other graphics, and links to other blogs, web pages, and related media. The ability for readers to leave comments in an interactive format is an important part of many blogs. Most blogs are primarily textual, although some focus on art (artlog), photographs (photoblog), sketchblog, videos (vlog), music (MP3 blog) and audio (podcasting), are part of

1136-464: A skilled leader can calm or divert a crowd using strategic suggestions, commands, or appeals to reason, aiming to de-escalate a situation. Emotional contagion plays a significant role in crowd behaviour by fostering a sense of unity among its members. This unity can lead the crowd to adopt a mob mentality and engage in mob behaviour. Crowd members amplify each other's emotions, creating a heightened state of collective emotion. Ideas rapidly spread among

1207-461: A theme, which can be exampled with The Wall Street Journal as they offer news on finance and business related-topics. The first printed newspaper was published in 1605, and the form has thrived even in the face of competition from technologies such as radio and television. Recent developments on the Internet are posing major threats to its business model, however. Paid circulation is declining in most countries, and advertising revenue, which makes up

1278-417: A threat to law enforcers because it is open to manipulation. This is because the behavior of a crowd is under the direction of the majority of its members. While its members are usually inclined to obey the law, emotional stimuli, and the feeling of fearlessness that arises from being in a crowd, can cause crowd members to indulge in impulses, act on aggressions, and unleash rage . When law enforcement limits

1349-463: A wider network of social media. Microblogging is another type of blogging which consists of blogs with very short posts. RSS is a format for syndicating news and the content of news-like sites, including major news sites like Wired , news-oriented community sites like Slashdot , and personal blogs. It is a family of Web feed formats used to publish frequently updated content such as blog entries, news headlines, and podcasts. An RSS document (which

1420-486: A worldwide attraction, especially with the addition of dubbing or subtitles that translate the original language. A video game is a computer-controlled game in which a video display, such as a monitor or television set, is the primary feedback device. The term "computer game" also includes games which display only text or which use other methods, such as sound or vibration, as their primary feedback device. There always must also be some sort of input device , usually in

1491-436: Is a publication containing news and information and advertising, usually printed on low-cost paper called newsprint . It may be general or special interest, most often published daily or weekly. The most important function of newspapers is to inform the public of significant events. Local newspapers inform local communities and include advertisements from local businesses and services, while national newspapers tend to focus on

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1562-490: Is a more interactive medium of mass media, and can be briefly described as "a network of networks". Specifically, it is the worldwide, publicly accessible network of interconnected computer networks that transmit data by packet switching using the standard Internet Protocol (IP). It consists of millions of smaller domestic, academic, business and governmental networks, which together carry various information and services, such as email , online chat , file transfer, and

1633-770: Is a single cause or a combination of causes; however, most are born from political grievances, economic disparities , social discord, but historically have been the result of long-standing oppression by a group of people towards another. Civil disorder arising from political grievances can include a range of events, from a simple protest to a mass civil disobedience. These events can be spontaneous, but can also be planned. These events can turn violent when agitators and law enforcers overreact. Civil disorder has in history arisen from economic disputes, political reasons (such as in opposition to oppressive or tyrannical government forces), religious opposition, racial oppression and social discord among various cases throughout history. Exploiting

1704-458: Is a smaller group of police which identifies agitators and leaders of the crowd and targets them for extraction from the main group, or confronts and disperses a crowd during its embryonic phase. The mobile field force is either a dedicated group of law enforcement officers, or a group of law enforcement officers with non-MFF duties who can be rapidly mobilized into the mobile field force in anticipation of an exigent event. Its primary responsibility

1775-506: Is accessible through the Internet, along with many other services including e-mail, file sharing and others described below. Toward the end of the 20th century, the advent of the World Wide Web marked the first era in which most individuals could have a means of exposure on a scale comparable to that of mass media. Anyone with a web site has the potential to address a global audience, although serving to high levels of web traffic

1846-494: Is called a "feed" or "web feed" or "channel") contains either a summary of content from an associated web site or the full text. RSS makes it possible for people to keep up with web sites in an automated manner that can be piped into special programs or filtered displays. A podcast is a series of digital-media files which are distributed over the Internet using syndication feeds for playback on portable media players and computers. The term podcast, like broadcast, can refer either to

1917-543: Is heightened in which law enforcement agents are monolithic, across race and ethnicity, as law enforcement will become more susceptible to framing the disorder as a confrontation between "them" and "us." Actions by law enforcement agents, motivated by emotion and prejudice, is often used as evidence against their ill will toward a crowd, or a mob, with their behavior only further inflaming confrontation rather than reducing it. Under such situations, law enforcement agents are rarely held accountable for all their actions against

1988-503: Is high among law enforcement agents, they may breach their feeling of restraint and commit acts, against people in the mob, that they normally would suppress. The emotional atmosphere can also make them highly susceptible to rumors and fear. Like mob members, law enforcement agents, acting as a group, can also lose their sense of individuality and develop a feeling of anonymity. Under emotional instability, individual prejudices, that any individual law enforcement agent may harbor against

2059-403: Is not seen because of an effect known as persistence of vision , whereby the eye retains a visual image for a fraction of a second after the source has been removed. Also of relevance is what causes the perception of motion: a psychological effect identified as beta movement . Film has emerged as an important art form. They entertain, educate, enlighten and inspire audiences. Any film can become

2130-433: Is sometimes erroneously used as a synonym for " mainstream media ". Mainstream media are distinguished from alternative media by their content and point of view. Alternative media are also "mass media" outlets in the sense that they use technology capable of reaching many people, even if the audience is often smaller than the mainstream. In common usage, the term "mass" denotes not that a given number of individuals receives

2201-836: Is sometimes misunderstood in this way. It can be used for various purposes: Journalism is the discipline of collecting, analyzing, verifying and presenting information regarding current events , trends , issues and people. Those who practice journalism are known as journalists . News -oriented journalism is sometimes described as the "first rough draft of history" (attributed to Phil Graham ), because journalists often record important events, producing news articles on short deadlines. While under pressure to be first with their stories, news media organisations usually edit and proofread their reports prior to publication, adhering to each organisation's standards of accuracy, quality and style. Many news organisation claim proud traditions of holding government officials and institutions accountable to

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2272-422: Is still relatively expensive. It is possible that the rise of peer-to-peer technologies may have begun the process of making the cost of bandwidth manageable. Although a vast amount of information, imagery, and commentary (i.e. "content") has been made available, it is often difficult to determine the authenticity and reliability of information contained in web pages (in many cases, self-published). The invention of

2343-541: Is to operate in support of an agency's regular police during periods of civil unrest by disrupting and dispersing crowds that are in the process of forming, or identifying and arresting leaders of crowds that have already formed. In addition, the mobile field force can be used for protection of large crime scenes, saturation patrols in high-crime neighborhoods, or to provide security at critical infrastructure during periods of heightened threat; for instance, in Illinois ,

2414-728: Is to spur law enforcers to take action that can be exploited as acts of brutality in order to generate sympathy for their cause, and/or to anger and demoralize the opposition. Crowds can use a range of tactics to evade law enforcement or to promote disorder, from verbal assault to distracting law enforcers to building barricades. The more well-planned tactics occur, the more purposeful the disorder. For example, crowds may form human blockades to shut down roads, they may trespass on government property, they may try to force mass arrests, they may handcuff themselves to things or to each other, or they may lock arms, making it more difficult to separate them, or they might create confusion or diversions through

2485-505: The Illinois Law Enforcement Alarm System (ILEAS) Mobile Field Forces prepare to defend Strategic National Stockpile distribution sites during a pandemic . Mobile field forces typically have between 27 and 57 personnel. U.S. Department of Homeland Security standards expect mobile field forces to be self-sufficient for periods of up to 72 hours. A sample 33-officer mobile field force is organized as

2556-452: The Internet has also allowed breaking news stories to reach around the globe within minutes. This rapid growth of instantaneous, decentralised communication is often deemed likely to change mass media and its relationship to society. "Cross-media" means the idea of distributing the same message through different media channels. A similar idea is expressed in the news industry as "convergence". Many authors understand cross-media publishing to be

2627-516: The Internet, however, it is questionable whether players of video games are sharing a common experience when they play the game individually. It is possible to discuss in great detail the events of a video game with a friend one has never played with, because the experience is identical to each. The question, then, is whether this is a form of mass communication. Five characteristics of mass communication have been identified by sociologist John Thompson of Cambridge University : The term "mass media"

2698-692: The Master Settlement Agreement between the US and the tobacco industries prohibited the billboard advertising of cigarettes. In a 1994 Chicago-based study, Diana Hackbarth and her colleagues revealed how tobacco- and alcohol-based billboards were concentrated in poor neighbourhoods. In other urban centers, alcohol and tobacco billboards were much more concentrated in African-American neighbourhoods than in white neighbourhoods. Mass media encompasses much more than just news, although it

2769-399: The ability to publish in both print and on the web without manual conversion effort. An increasing number of wireless devices with mutually incompatible data and screen formats make it even more difficult to achieve the objective "create once, publish many". The Internet is quickly becoming the center of mass media. Everything is becoming accessible via the internet. Rather than picking up

2840-592: The bulk of a newspaper's income, is shifting from print to online; some commentators, nevertheless, point out that historically new media such as radio and television did not entirely supplant existing. The internet has challenged the press as an alternative source of information and opinion but has also provided a new platform for newspaper organisations to reach new audiences. According to the World Trends Report , between 2012 and 2016, print newspaper circulation continued to fall in almost all regions, with

2911-517: The class outline or assignments. Some classes have class blogs in which students are required to post weekly, with students graded on their contributions. Blogging , too, has become a pervasive form of media. A blog is a website, usually maintained by an individual, with regular entries of commentary, descriptions of events, or interactive media such as images or video. Entries are commonly displayed in reverse chronological order, with most recent posts shown on top. Many blogs provide commentary or news on

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2982-620: The crowd than its concern for law and authority, leading to unlawful and disruptive acts. Once the crowd engages in such acts, it effectively becomes a mob – a highly emotional, unreasonable, potentially violent crowd. Crowd behavior is the emotional needs, fears, and prejudices of the crowd members. It is driven by social factors such as the strength, or weakness, of leadership, moral perspective, or community uniformity, and also by psychological factors of suggestion e.g. imitation, anonymity, impersonality, emotional release, emotional contagion, panic, etc. During civil disorder, any crowd can be

3053-491: The definition. In the early 2000s, a classification called the "seven mass media" came into use. In order of introduction, they are: Each mass medium has its own content types, creative artists, technicians and business models. For example, the Internet includes blogs , podcasts , web sites and various other technologies built atop the general distribution network. The sixth and seventh media, Internet and mobile phones, are often referred to collectively as digital media ; and

3124-440: The effectiveness of law enforcement. For example, they may use grappling hooks , chains, rope, or vehicles to breach gates or fences. They may use sticks or poles to limit law enforcement's use of billy clubs and bayonets . They may overturn civilian vehicles to impede troops advancing to engage them or vandalize law enforcement vehicles to try to spark over-reaction from law enforcement or to incite further lawlessness from

3195-837: The exception of Asia and the Pacific , where the dramatic increase in sales in a few select countries has offset falls in historically strong Asian markets such as Japan and the Republic of Korea . Most notably, between 2012 and 2016, India 's print circulation grew by 89 per cent. Outdoor media is a form of mass media which comprises billboards, signs, placards placed inside and outside commercial buildings/objects like shops/buses, flying billboards (signs in tow of airplanes), blimps, skywriting, AR advertising. Many commercial advertisers use this form of mass media when advertising in sports stadiums. Tobacco and alcohol manufacturers used billboards and other outdoor media extensively. However, in 1998,

3266-412: The form of button/joystick combinations (on arcade games), a keyboard and mouse/ trackball combination (computer games), a controller ( console games), or a combination of any of the above. Also, more esoteric devices have been used for input, e.g., the player's motion. Usually there are rules and goals, but in more open-ended games the player may be free to do whatever they like within the confines of

3337-412: The fourth and fifth, radio and TV, as broadcast media . Some argue that video games have developed into a distinct mass form of media. While a telephone is a two-way communication device, mass media communicates to a large group. In addition, the telephone has transformed into a cell phone which is equipped with Internet access. A question arises whether this makes cell phones a mass medium or simply

3408-473: The full realization of these actions, the crowd will channel this hostility elsewhere, making the crowd a hostile and unpredictable threat to law enforcers. Crowds want to be directed, and can become frustrated by confusion and uncertainty; therefore, leadership can have a profound influence on the intensity and conduct of a crowd's behavior. The first person to authoritatively direct a crowd will likely be followed. Opportunity for radicals to take charge of

3479-414: The group and to bystanders and mass media . When emotional contagion prevails, raw emotion is high while self-discipline is low. Personal prejudices and unsatisfied desires – usually restrained – are unabashedly released. This incentivizes crowd membership, as the crowd provides cover for individuals to do things they want to do, but would not dare try to do alone. This incentive can become greater for

3550-481: The interlinked web pages and other documents of the World Wide Web . Contrary to some common usage, the Internet and the World Wide Web are not synonymous: the Internet is the system of interconnected computer networks , linked by copper wires, fibre-optic cables, wireless connections etc.; the Web is the contents, or the interconnected documents , linked by hyperlinks and URLs . The World Wide Web

3621-414: The invention of digital recording and the compact disc in 1983 brought massive improvements in ruggedness and quality. The most recent developments have been in digital audio players . An album is a collection of related audio recordings, released together to the public, usually commercially. The term record album originated from the fact that 78 RPM phonograph disc records were kept together in

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3692-414: The invention of the phonograph using purely mechanical techniques, the field has advanced with the invention of electrical recording, the mass production of the 78 record , the magnetic wire recorder followed by the tape recorder , the vinyl LP record . The invention of the compact cassette in the 1960s, followed by Sony's Walkman , gave a major boost to the mass distribution of music recordings, and

3763-443: The late 20th century, mass media could be classified into eight mass media industries: books, the Internet, magazines, movies, newspapers, radio, recordings and television. The explosion of digital communication technology in the late 20th and early 21st centuries made prominent the question: what forms of media should be classified as "mass media"? For example, it is controversial whether to include mobile phones and video games in

3834-475: The mob, in returning fire, any innocent casualties resulting from the chaos usually make law enforcement look undisciplined and oppressive. According to the U.S. Code , a person is engaged in civil disorder if he or she - (1) "...teaches or demonstrates to any other person the use, application, or making of any firearm or explosive or incendiary device , or technique capable of causing injury or death to persons, knowing or having reason to know or intending that

3905-421: The mob, or against individual participants of the mob, may influence the behavior of the law enforcement agent. Like the mob, these conditions make law enforcement actors more likely to imitate the behavior of each other, which can result in a chain of biased, excessive, or otherwise, dangerous, behavior in which law enforcement agents act upon mob agents as impersonal threats and not as human beings. Such action

3976-429: The mob. Mobs often employ fire, smoke, or hidden explosive devices e.g. strapped to animals, masked in cigarette lighters or toys, rigged to directed vehicles, etc. Not only can these devices be used to create confusion or diversion, but they can also be used to destroy property, mask looting of mob participants, or provide cover for mob participants firing weapons at law enforcement. If law enforcement engages with

4047-465: The movement of any article or commodity in commerce or the conduct or performance of any federally protected function. " Like mob participants, law enforcers are also susceptible to crowd behavior. Such tense confrontation can emotionally stimulate them, creating a highly emotional atmosphere all around. This emotional stimulation can become infectious throughout law enforcement agents, conflicting with their disciplined training. When emotional tension

4118-481: The other hand, two or more organisations may share a channel and each use it during a fixed part of the day, such as the Cartoon Network / Adult Swim . Digital radio and digital television may also transmit multiplexed programming, with several channels compressed into one ensemble . When broadcasting is done via the Internet the term webcasting is often used. In 2004, a new phenomenon occurred when

4189-483: The products, but rather that the products are available in principle to a plurality of recipients. The sequencing of content in a broadcast is called a schedule . With all technological endeavours a number of technical terms and slang have developed. Radio and television programs are distributed over frequency bands which are highly regulated in the United States. Such regulation includes determination of

4260-418: The public, while media critics have raised questions about holding the press itself accountable to the standards of professional journalism. Public relations is the art and science of managing communication between an organisation and its key publics to build, manage and sustain its positive image. Examples include: Publishing is the industry concerned with the production of literature or information –

4331-461: The same will be unlawfully employed for use in, or in furtherance of, a civil disorder which may in any way or degree obstruct, delay, or adversely affect commerce or the movement of any article or commodity in commerce or the conduct or performance of any federally protected function;  or... (2) ...transports or manufactures for transportation in commerce any firearm, or explosive or incendiary device, knowing or having reason to know or intending that

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4402-405: The same will be used unlawfully in furtherance of a civil disorder;  or... (3) ...commits or attempts to commit any act to obstruct, impede, or interfere with any fireman or law enforcement officer lawfully engaged in the lawful performance of his official duties incident to and during the commission of a civil disorder which in any way or degree obstructs, delays, or adversely affects commerce or

4473-552: The series of content itself or to the method by which it is syndicated; the latter is also called podcasting. The host or author of a podcast is often called a podcaster. Mobile phones were introduced in Japan in 1979 but became a mass media only in 1998 when the first downloadable ringing tones were introduced in Finland. Soon most forms of media content were introduced on mobile phones, tablets and other portable devices, and today

4544-404: The silver screen , photoplays , the cinema , picture shows , flicks and, most commonly, movies . Films are produced by recording people and objects with cameras , or by creating them using animation techniques or special effects . Films comprise a series of individual frames, but when these images are shown in rapid succession, an illusion of motion is created. Flickering between frames

4615-665: The ten best-selling printed books were originally released as mobile phone books. Similar to the internet, mobile is also an interactive media , but has far wider reach, with 3.3 billion mobile phone users at the end of 2007 to 1.3 billion internet users (source ITU). Like email on the internet, the top application on mobile is also a personal messaging service, but SMS text messaging is used by over 2.4 billion people. Practically all internet services and applications exist or have similar cousins on mobile, from search to multiplayer games to virtual worlds to blogs. Mobile has several unique benefits which many mobile media pundits claim make mobile

4686-434: The third screen (counting only TV and PC). A magazine is a periodical publication containing a variety of articles, generally financed by advertising or purchase by readers. Magazines are typically published weekly , biweekly , monthly , bimonthly or quarterly , with a date on the cover that is in advance of the date it is actually published. They are often printed in colour on coated paper , and are bound with

4757-477: The total value of media consumed on mobile vastly exceeds that of internet content, and was worth over $ 31 billion in 2007 (source Informa). The mobile media content includes over $ 8 billion worth of mobile music (ringing tones, ringback tones, truetones, MP3 files, karaoke, music videos, music streaming services, etc.); over $ 5 billion worth of mobile gaming; and various news, entertainment and advertising services. In Japan mobile phone books are so popular that five of

4828-489: The use of rock throwing , arson , or terrorist acts, giving leeway to law enforcers to be forceful or excessive while trying to remove them. Also, sometimes, terrorist elements are involved. Most participants of civil disorder engage on foot. However, organized efforts can often implore the use vehicles and wireless communication . Participants have been known to use scanners to monitor police frequencies or transmitters to sabotage law enforcement communications. If

4899-458: The virtual universe. In common usage, an " arcade game " refers to a game designed to be played in an establishment in which patrons pay to play on a per-use basis. A "computer game" or " PC game " refers to a game that is played on a personal computer. A " Console game " refers to one that is played on a device specifically designed for the use of such, while interfacing with a standard television set. A "video game" (or "videogame") has evolved into

4970-1171: The web, by such means as linking to or running TV ads online, or distributing QR codes in outdoor or print media to direct mobile users to a website. In this way, they can use the easy accessibility and outreach capabilities the Internet affords, as thereby easily broadcast information throughout many different regions of the world simultaneously and cost-efficiently. Outdoor media transmits information via such media as augmented reality (AR) advertising ; billboards ; blimps ; flying billboards (signs in tow of airplanes); placards or kiosks placed inside and outside buses, commercial buildings, shops, sports stadiums, subway cars, or trains; signs; or skywriting . Print media transmit information via physical objects, such as books , comics , magazines , newspapers , or pamphlets . Event organising and public speaking can also be considered forms of mass media. Mass media organisations or mass media companies that control these technologies include movie studios, publishing companies, and radio and television stations (the latter are also sometimes known as mass media networks ); they often form media conglomerates . In

5041-570: The width of the bands, range, licensing, types of receivers and transmitters used, and acceptable content. Cable television programs are often broadcast simultaneously with radio and television programs, but have a more limited audience. By coding signals and requiring a cable converter box at individual recipients' locations, cable also enables subscription -based channels and pay-per-view services. A broadcasting organisation may broadcast several programs simultaneously, through several channels ( frequencies ), for example BBC One and Two . On

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