1.
Adobe Acrobat
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Adobe Acrobat is a family of application software and Web services developed by Adobe Systems to view, create, manipulate, print and manage files in Portable Document Format. The family comprises Acrobat Reader, Acrobat and Acrobat. com, the basic Acrobat Reader, available for several desktop and mobile platforms, is freeware, it supports viewing, printing and annotating of PDF files. Additional, Premium, services are available for reader on paid subscription, the commercial proprietary Acrobat, available for Microsoft Windows and macOS only, can also create, edit, convert, digitally sign, encrypt, export and publish PDF files. Acrobat. com complements the family with a variety of content management. Adobe has changed the names of the products of the Acrobat set several times, also dividing, merging, initially, the name Acrobat was used as the parent name of a set of products which included Acrobat Reader, Acrobat Exchange and Acrobat Distiller. Over time, Acrobat Reader became Reader, and the name Acrobat Exchange was simplified to Acrobat, between versions 3 and 5, Standard and Professional versions were one product known simply as Acrobat. In April 2015, Adobe introduced the Adobe Document Cloud, along with the first of several applications with DC at the end of the name. One of the goals was to have all of a users PDFs available on any of the users devices, such as editing a PDF on an iPad. As of October,2015, the Document Cloud also includes integration with Dropbox and includes electronic signature improvements, as of April 2015, the main members of the Acrobat family include, Desktop applications, Adobe Acrobat Reader DC. Adobe Acrobat Standard DC Adobe Acrobat Pro DC Mobile applications with the Document Cloud launch, from DC2015 the Acrobat family is available in two tracks, the original track, now named Classic, and the Continuous track. Updates for the Classic track are released quarterly, and do not include new features, whereas updates for the Continuous track are issued more frequently, the last pre-DC version, Acrobat XI, was last updated on October 11,2016, and will remain supported until October 2017. Arabic and Hebrew versions are available from WinSoft International, Adobe Systems internationalization and localization partner, the Arabic and Hebrew versions are developed specifically for these languages, which are normally written right-to-left. The Web Capture feature can convert single web pages or entire web sites into PDF files, a comprehensive list of security bulletins for most Adobe products and related versions is published on their Security bulletins and advisories page and in other related venues. In particular, the history of security updates for all versions of Adobe Acrobat has been made public. From Version 3.02 onwards, Acrobat Reader has included support for JavaScript and this functionality allows a PDF document creator to include code which executes when the document is read. Malicious PDF files that attempt to attack security vulnerabilities can be attached to links on web pages or distributed as email attachments. While JavaScript is designed without direct access to the system to make it safe. Adobe applications had become the most popular client-software targets for attackers during the last quarter of 2009
2.
Ancient Greek
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Ancient Greek includes the forms of Greek used in ancient Greece and the ancient world from around the 9th century BC to the 6th century AD. It is often divided into the Archaic period, Classical period. It is antedated in the second millennium BC by Mycenaean Greek, the language of the Hellenistic phase is known as Koine. Koine is regarded as a historical stage of its own, although in its earliest form it closely resembled Attic Greek. Prior to the Koine period, Greek of the classic and earlier periods included several regional dialects, Ancient Greek was the language of Homer and of fifth-century Athenian historians, playwrights, and philosophers. It has contributed many words to English vocabulary and has been a subject of study in educational institutions of the Western world since the Renaissance. This article primarily contains information about the Epic and Classical phases of the language, Ancient Greek was a pluricentric language, divided into many dialects. The main dialect groups are Attic and Ionic, Aeolic, Arcadocypriot, some dialects are found in standardized literary forms used in literature, while others are attested only in inscriptions. There are also several historical forms, homeric Greek is a literary form of Archaic Greek used in the epic poems, the Iliad and Odyssey, and in later poems by other authors. Homeric Greek had significant differences in grammar and pronunciation from Classical Attic, the origins, early form and development of the Hellenic language family are not well understood because of a lack of contemporaneous evidence. Several theories exist about what Hellenic dialect groups may have existed between the divergence of early Greek-like speech from the common Proto-Indo-European language and the Classical period and they have the same general outline, but differ in some of the detail. The invasion would not be Dorian unless the invaders had some relationship to the historical Dorians. The invasion is known to have displaced population to the later Attic-Ionic regions, the Greeks of this period believed there were three major divisions of all Greek people—Dorians, Aeolians, and Ionians, each with their own defining and distinctive dialects. Often non-west is called East Greek, Arcadocypriot apparently descended more closely from the Mycenaean Greek of the Bronze Age. Boeotian had come under a strong Northwest Greek influence, and can in some respects be considered a transitional dialect, thessalian likewise had come under Northwest Greek influence, though to a lesser degree. Most of the dialect sub-groups listed above had further subdivisions, generally equivalent to a city-state and its surrounding territory, Doric notably had several intermediate divisions as well, into Island Doric, Southern Peloponnesus Doric, and Northern Peloponnesus Doric. The Lesbian dialect was Aeolic Greek and this dialect slowly replaced most of the older dialects, although Doric dialect has survived in the Tsakonian language, which is spoken in the region of modern Sparta. Doric has also passed down its aorist terminations into most verbs of Demotic Greek, by about the 6th century AD, the Koine had slowly metamorphosized into Medieval Greek
3.
Balance (ability)
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In biomechanics, balance is an ability to maintain the line of gravity of a body within the base of support with minimal postural sway. Sway is the movement of the centre of gravity even when a person is standing still. A certain amount of sway is essential and inevitable due to small perturbations within the body or from external triggers, an increase in sway is not necessarily an indicator of dysfunctional balance so much as it is an indicator of decreased sensorimotor control. Maintaining balance requires coordination of input from sensory systems including the vestibular, somatosensory. There are environmental factors that can balance such as light conditions, floor surface changes, alcohol, drugs. There are balance impairments associated with aging, age-related decline in the ability of the above systems to receive and integrate sensory information contributes to poor balance in older adults. As a result, the elderly are at a risk of falls. In fact, one in three adults aged 65 and over will fall each year, in the case of an individual standing quietly upright, the limit of stability is defined as the amount of postural sway at which balance is lost and corrective action is required. Body sway can occur in all planes of motion, which make it an increasingly difficult ability to rehabilitate, there is strong evidence in research showing that deficits in postural balance is related to the control of medial-lateral stability and an increased risk of falling. To remain balanced, a person standing must be able to keep the vertical projection of their center of mass within their base of support, ankle sprains are one of the most frequently occurring injuries among athletes and physically active people. The most common residual disability post ankle sprain is instability along with body sway and it is found that nearly 40% of patients with ankle sprains suffer from instability and an increase in body sway. Injury to the causes an proprioceptive deficit and impaired postural control. Individuals with muscular weakness, occult instability, and decreased postural control are more susceptible to injury than those with better postural control. Balance can be affected in individuals with neurological conditions. Patients who suffer a stroke or a spinal cord injury for example and it has also been determined that impaired balance is strongly associated with future function and recovery in some cases, particularly in stroke patients. Additionally, balance problems have been identified as the strongest predictor of falls, another population where balance is severely affected is Parkinsons disease patients. Balance can also be affected in a normal population through fatigue in the musculature surrounding the ankles, knees. Studies have found, however, that muscle fatigue around the hips and it is thought that muscle fatigue leads to a decreased ability to contract with the correct amount of force or accuracy
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Performing arts
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Performing arts are a form of art in which artists use their voices and/or their bodies, often in relation to other objects, to convey artistic expression. It is different from visual arts, which is when artists use paint/canvas or various materials to create physical or static art objects, performing arts include several disciplines, each performed in front of a live audience. Artists who participate in performing arts in front of an audience are called performers, examples of these include actors, comedians, dancers, magicians, circus artists, musicians, and singers. Performing arts are supported by workers in related fields, such as songwriting, choreography. A performer who excels in acting, singing, and dancing is commonly referred to as a triple threat, well-known examples of historical triple threat artists include Gene Kelly, Fred Astaire, and Judy Garland. Performers often adapt their appearance, such as costumes and stage makeup, stage lighting. Performing arts may include dance, music, opera, theatre and musical theatre, magic, illusion, mime, spoken word, puppetry, circus arts, performance art, recitation and public speaking. There is also a form of fine art, in which the artists perform their work live to an audience. Most performance art also involves some form of art, perhaps in the creation of props. Dance was often referred to as an art during the Modern dance era. Theatre is the branch of performing arts, concerned with acting out stories in front of an audience, using a combination of speech, gesture, music, dance, sound, any one or more of these elements is performing arts. In addition to the standard narrative style of plays. In the context of performing arts, dance generally refers to movement, typically rhythmic and to music. Definitions of what constitutes dance are dependent on social, cultural, aesthetic artistic and moral constraints and range from functional movement to codified, in dance, the connection between the two concepts is stronger than in some other arts, and neither can exist without the other. Choreography is the art of making dances, and the person who practices this art is called a choreographer, music is an art form which combines pitch, rhythm, and dynamic in order to create sound. It can be performed using a variety of instruments and styles and is divided into genres, as an art form, music can occur in live or recorded formats, and can be planned or improvised. Starting in the 6th century BC, the Classical period of performing art began in Greece and these poets wrote plays which, in some cases, incorporated dance. The Hellenistic period began the use of comedy
5.
Sport
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Usually the contest or game is between two sides, each attempting to exceed the other. Some sports allow a tie game, others provide tie-breaking methods, to one winner. A number of such two-sided contests may be arranged in a tournament producing a champion, many sports leagues make an annual champion by arranging games in a regular sports season, followed in some cases by playoffs. Hundreds of sports exist, from those between single contestants, through to those with hundreds of participants, either in teams or competing as individuals. In certain sports such as racing, many contestants may compete, each against each other, however, a number of competitive, but non-physical, activities claim recognition as mind sports. Sports are usually governed by a set of rules or customs, which serve to ensure fair competition, winning can be determined by physical events such as scoring goals or crossing a line first. It can also be determined by judges who are scoring elements of the sporting performance, records of performance are often kept, and for popular sports, this information may be widely announced or reported in sport news. Sport is also a source of entertainment for non-participants, with spectator sport drawing large crowds to sport venues. Sports betting is in some cases severely regulated, and in some cases is central to the sport, kearney, a consultancy, the global sporting industry is worth up to $620 billion as of 2013. The worlds most accessible and practised sport is running, while football is the most popular spectator sport. The word Sport comes from the Old French desport meaning leisure, other meanings include gambling and events staged for the purpose of gambling, hunting, and games and diversions, including ones that require exercise. Rogets defines the noun sport as an activity engaged in for relaxation, the singular term sport is used in most English dialects to describe the overall concept, with sports used to describe multiple activities. American English uses sports for both terms, the precise definition of what separates a sport from other leisure activities varies between sources. They also recognise that sport can be physical, primarily mind, predominantly motorised, primarily co-ordination. The inclusion of sports within sport definitions has not been universally accepted. Whilst SportAccord recognises a number of mind sports, it is not open to admitting any further mind sports. According to Council of Europe, European Sports Charter, article 2, other bodies advocate widening the definition of sport to include all physical activity. For instance, the Council of Europe include all forms of physical exercise, in competitive events, participants are graded or classified based on their result and often divided into groups of comparable performance
6.
Martial arts
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Although the term martial art has become associated with the fighting arts of eastern Asia, it originally referred to the combat systems of Europe as early as the 1550s. The term is derived from Latin, and means arts of Mars, Martial arts may be categorized along a variety of criteria, including, Traditional or historical arts vs. contemporary styles of folk wrestling and modern hybrid martial arts. Such traditions include eskrima, silat, kalaripayat, kobudo, and historical European martial arts, Many Chinese martial arts also feature weapons as part of their curriculum. Similarly, modern Western martial arts and sports include fencing, stick-fighting systems like canne de combat or singlestick. Combat-oriented Health-oriented Many martial arts, especially those from Asia, also teach side disciplines which pertain to medicinal practices and this is particularly prevalent in traditional Asian martial arts which may teach bone-setting, herbalism, and other aspects of traditional medicine. Spirituality-oriented Martial arts can also be linked with religion and spirituality, numerous systems are reputed to have been founded, disseminated, or practiced by monks or nuns. Throughout Asia, meditation may be incorporated as part of training, in those countries influenced by Hindu-Buddhist philosophy, the art itself may be used as an aid to attaining enlightenment. Japanese styles, when concerning non-physical qualities of the combat, are strongly influenced by Mahayana Buddhist philosophy. Concepts like empty mind and beginners mind are recurrent, aikido, for instance, can have a strong philosophical belief of the flow of energy and peace fostering, as idealised by its founder Morihei Ueshiba. Traditional Korean martial arts place emphasis on the development of the spiritual and philosophical development. A common theme in most Korean styles, such as taekkyeon and taekwondo, is the value of peace in a practitioner. The Koreans believe that the use of force is only justified through defense. Many such martial arts incorporate music, especially strong percussive rhythms, the oldest works of art depicting scenes of battle are cave paintings from Spain dated between 10,000 and 6,000 BCE that show organized groups fighting with bows and arrows. Chinese martial arts originated during the Xia Dynasty more than 4000 years ago and it is said the Yellow Emperor Huangdi introduced the earliest fighting systems to China. The Yellow Emperor is described as a general who, before becoming Chinas leader, wrote lengthy treatises on medicine, astrology. One of his opponents was Chi You who was credited as the creator of jiao di. The foundation of modern Asian martial arts is likely a blend of early Chinese, during the Warring States period of Chinese history extensive development in martial philosophy and strategy emerged, as described by Sun Tzu in The Art of War. Legendary accounts link the origin of Shaolinquan to the spread of Buddhism from India during the early 5th century AD, with the figure of Bodhidharma, to China
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