79-478: The University of Kelaniya ( UoK ; Sinhala : කැලණිය විශ්වවිද්යාලය , Tamil : களனி பல்கலைக்கழகம் ) is a public university in Sri Lanka . Just outside the municipal limits of Colombo , in the city of Kelaniya , the university has two major institutions and seven faculties. The University of Kelaniya has its origin in the historic Vidyalankara Pirivena , founded in 1875 by Ratmalane Sri Dharmaloka Thera as
158-450: A captive portal webpage for access. Organizations, enthusiasts, authorities and businesses , such as airports, hotels, and restaurants, often provide free or paid-use hotspots to attract customers, to provide services to promote business in selected areas. Routers often incorporate a digital subscriber line modem or a cable modem and a Wi-Fi access point, are frequently set up in homes and other buildings, to provide Internet access for
237-1020: A 4 years of Korean Language Degree) while teaching courses in modern European languages such as English, French, German and Russian. The Department of Commerce was the first to be established and contribute graduates to the industry. BCOM degree is unique to the Department of Commerce. Department provides special degree in Financial Management(BCOM (special) Degree in Financial management), Business technology(BCOM (special) Degree in Business Technology), Entrepreneurship(BCOM (special) Degree in Entrepreneurship) and Commerce(BCOM (special) Degree in Commerce). The University of Kelaniya established its 7th Faculty -
316-662: A Dravidian origin for this word. ), dola for pig in Vedda and offering in Sinhala. Other common words are rera for wild duck, and gala for stones (in toponyms used throughout the island, although others have also suggested a Dravidian origin). There are also high frequency words denoting body parts in Sinhala, such as olluva for head, kakula for leg, bella for neck and kalava for thighs, that are derived from pre-Sinhalese languages of Sri Lanka. The oldest Sinhala grammar, Sidatsan̆garavā , written in
395-647: A Wi-Fi network. Wi-Fi uses a large number of patents held by many different organizations. Australia, the United States and the Netherlands simultaneously claim the invention of Wi-Fi, and a consensus has not been reached globally. In 2009, the Australian CSIRO was awarded $ 200 million after a patent settlement with 14 technology companies, with a further $ 220 million awarded in 2012 after legal proceedings with 23 companies. In 2016,
474-747: A centre of learning for Buddhist monks. With the establishment of modern universities in Sri Lanka in the 1940s and 1950s, the Vidyalankara Pirivena became the Vidyalankara University in 1959, later the Vidyalankara Campus of the University of Ceylon in 1972, and, ultimately, the University of Kelaniya in 1978. The University of Kelaniya has pioneered a number of new developments in higher education. It
553-447: A city-wide campaign to convert old phone booths into digital kiosks in 2014. The project, titled LinkNYC , has created a network of kiosks that serve as public Wi-Fi hotspots, high-definition screens and landlines . Installation of the screens began in late 2015. The city government plans to implement more than seven thousand kiosks over time, eventually making LinkNYC the largest and fastest public, government-operated Wi-Fi network in
632-460: A common Wi-Fi version. The versions differ between the radio wavebands they operate on, the radio bandwidth they occupy, the maximum data rates they can support and other details. Some versions permit the use of multiple antennas, which permits greater speeds as well as reduced interference. Historically, the equipment listed the versions of Wi-Fi supported using the name of the IEEE standards. In 2018,
711-407: A computer and an interface controller is called a station . Stations are identified by one or more MAC addresses . Wi-Fi nodes often operate in infrastructure mode in which all communications go through a base station. Ad hoc mode refers to devices communicating directly with each other, without communicating with an access point. A service set is the set of all the devices associated with
790-550: A founding member of the Wi-Fi Alliance, the term Wi-Fi was chosen from a list of ten names that Interbrand proposed. Interbrand also created the Wi-Fi logo . The yin-yang Wi-Fi logo indicates the certification of a product for interoperability . The name is often written as WiFi , Wifi , or wifi , but these are not approved by the Wi-Fi Alliance. The name Wi-Fi is not short-form for 'Wireless Fidelity', although
869-641: A greater degree by common building materials than the 2.4 GHz bands and usually give a shorter range. As 802.11 specifications evolved to support higher throughput, the protocols have become much more efficient in their bandwidth use. Additionally, they have gained the ability to aggregate channels together to gain still more throughput where the bandwidth for additional channels is available. 802.11n allows for double radio spectrum bandwidth (40 MHz) per channel compared to 802.11a or 802.11g (20 MHz). 802.11n can be set to limit itself to 20 MHz bandwidth to prevent interference in dense communities. In
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#1732780391542948-551: A major role in the development of Theravada Buddhist literature. Early forms of the Sinhala language are attested as early as the 3rd century BCE. The language of these inscriptions, still retaining long vowels and aspirated consonants, is a Prakrit similar to Magadhi , a regional associate of the Middle Indian Prakrits that had been used during the time of the Buddha . The most closely related languages are
1027-426: A particular Wi-Fi network. Devices in a service set need not be on the same wavebands or channels. A service set can be local, independent, extended, mesh, or a combination. Each service set has an associated identifier, a 32-byte service set identifier (SSID), which identifies the network. The SSID is configured within the devices that are part of the network. A basic service set (BSS) is a group of stations that share
1106-722: A period of prior bilingualism: "The earliest type of contact in Sri Lanka, not considering the aboriginal Vedda languages, was that which occurred between South Dravidian and Sinhala. It seems plausible to assume prolonged contact between these two populations as well as a high degree of bilingualism. This explains why Sinhala looks deeply South Dravidian for an Indo-Aryan language. There is corroboration in genetic findings." In addition to many Tamil loanwords , several phonetic and grammatical features also present in neighbouring Dravidian languages set modern spoken Sinhala apart from its Northern Indo-Aryan relatives. These features are evidence of close interactions with Dravidian speakers. Some of
1185-565: A possible Western feature in Sinhala is the retention of initial /v/ which developed into /b/ in the Eastern languages (e.g. Sanskrit viṁśati "twenty", Sinhala visi- , Hindi bīs ). This is disputed by Muhammad Shahidullah who says that Sinhala Prakrit branched off from the Eastern Prakrits prior to this change. He cites the edicts of Ashoka , no copy of which shows this sound change. An example of an Eastern feature
1264-410: A single carrier, whereas 802.11a, Wi-Fi 4, 5 and 6 use orthogonal frequency-division multiplexing . Channels are used half duplex and can be time-shared by multiple networks. Any packet sent by one computer is locally received by stations tuned to that channel, even if that information is intended for just one destination. Stations typically ignore information not addressed to them. The use of
1343-635: A team of scientists began working on wireless LAN technology. A prototype test bed for a wireless local area network (WLAN) was developed in 1992 by a team of researchers from the Radiophysics Division of the CSIRO (Commonwealth Scientific and Industrial Research Organisation) in Australia, led by John O'Sullivan . A patent for Wi Fi was lodged by the CSIRO in 1992 The first version of
1422-432: A two-semester academic year with the end of semester examinations. It offers a variety of course pathways designed to provide flexibility in the choice of subjects. Under this system students have the option of reading for a traditional three subject degree or for a degree consisting of two principal subjects and a selection of course units drawn from other subject areas. The BSc (Special) degree courses, begun in 1974, adopted
1501-615: A wider channel for higher throughput. Countries apply their own regulations to the allowable channels, allowed users and maximum power levels within these frequency ranges. 802.11b/g/n can use the 2.4 GHz band, operating in the United States under FCC Part 15 rules and regulations. In this frequency band, equipment may occasionally suffer interference from microwave ovens, cordless telephones , USB 3.0 hubs, Bluetooth and other devices. Spectrum assignments and operational limitations are not consistent worldwide: Australia and Europe allow for an additional two channels (12, 13) beyond
1580-461: Is Prof. Madawa N. Chandratilake. The faculty now has over 1,000 medical students. This number includes international students, mainly from other South Asian countries, who have been admitted on a fee-levying basis. The faculty also welcomes students for elective appointments. Students from medical schools in Europe, USA and Australia have spent their elective periods with the university. In addition to
1659-622: Is a Sanskrit term; the corresponding Middle Indo-Aryan ( Eḷu ) word is Sīhala . The name is a derivative of siṁha , the Sanskrit word for 'lion'. The name is sometimes glossed as 'abode of lions', and attributed to a supposed former abundance of lions on the island. According to the chronicle Mahāvaṃsa , written in Pali, Prince Vijaya of the Vanga Kingdom and his entourage merged in Sri Lanka with later settlers from
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#17327803915421738-577: Is a family of wireless network protocols based on the IEEE 802.11 family of standards, which are commonly used for local area networking of devices and Internet access, allowing nearby digital devices to exchange data by radio waves . These are the most widely used computer networks, used globally in home and small office networks to link devices and to provide Internet access with wireless routers and wireless access points in public places such as coffee shops, hotels, libraries, and airports. Wi-Fi
1817-569: Is a trademark of the Wi-Fi Alliance , which restricts the use of the term " Wi-Fi Certified " to products that successfully complete interoperability certification testing. Non-compliant hardware is simply referred to as WLAN , and it may or may not work with " Wi-Fi Certified " devices. As of 2017, the Wi-Fi Alliance consisted of more than 800 companies from around the world. As of 2019, over 3.05 billion Wi-Fi-enabled devices are shipped globally each year. Wi-Fi uses multiple parts of
1896-554: Is about 20 m (66 ft) indoors, while some access points claim up to a 150 m (490 ft) range outdoors. Hotspot coverage can be as small as a single room with walls that block radio waves or as large as many square kilometers using many overlapping access points with roaming permitted between them. Over time, the speed and spectral efficiency of Wi-Fi have increased. As of 2019, some versions of Wi-Fi, running on suitable hardware at close range, can achieve speeds of 9.6 Gbit/s ( gigabit per second). A 1985 ruling by
1975-432: Is divided into a multitude of channels . In the standards, channels are numbered at 5 MHz spacing within a band (except in the 60 GHz band, where they are 2.16 GHz apart), and the number refers to the centre frequency of the channel. Although channels are numbered at 5 MHz spacing, transmitters generally occupy at least 20 MHz, and standards allow for neighbouring channels to be bonded together to form
2054-641: Is submitted for certification. The lack of Wi-Fi certification does not necessarily imply that a device is incompatible with other Wi-Fi devices. The Wi-Fi Alliance may or may not sanction derivative terms, such as Super Wi-Fi , coined by the US Federal Communications Commission (FCC) to describe proposed networking in the UHF TV band in the US. Equipment frequently supports multiple versions of Wi-Fi. To communicate, devices must use
2133-495: Is the ending -e for masculine nominative singular (instead of Western -o ) in Sinhalese Prakrit. There are several cases of vocabulary doublets , one example being the words mæssā ("fly") and mækkā ("flea"), which both correspond to Sanskrit makṣikā but stem from two regionally different Prakrit words macchiā (Western Prakrits) and makkhikā (as in Eastern Prakrits like Pali ). In 1815,
2212-417: Is used in applications such as motion detection and gesture recognition . Wi-Fi stations communicate by sending each other data packets , blocks of data individually sent and delivered over radio on various channels. As with all radio, this is done by the modulation and demodulation of carrier waves . Different versions of Wi-Fi use different techniques, 802.11b uses direct-sequence spread spectrum on
2291-551: The Eduroam international authentication infrastructure. In the early 2000s, many cities around the world announced plans to construct citywide Wi-Fi networks. There are many successful examples; in 2004, Mysore (Mysuru) became India's first Wi-Fi-enabled city. A company called WiFiyNet has set up hotspots in Mysore, covering the whole city and a few nearby villages. In 2005, St. Cloud, Florida and Sunnyvale, California , became
2370-505: The IEEE 802 protocol family and is designed to work seamlessly with its wired sibling, Ethernet . Compatible devices can network through wireless access points with each other as well as with wired devices and the Internet. Different versions of Wi-Fi are specified by various IEEE 802.11 protocol standards, with different radio technologies determining radio bands, maximum ranges, and speeds that may be achieved. Wi-Fi most commonly uses
2449-703: The North Colombo Medical College (NCMC), the first privately funded medical school in Sri Lanka established in 1980. The first batch of students, of the Faculty of Medicine, University of Kelaniya completed their five-year course and graduated MBBS in September 1996. Prof. Carlo Fonseka was the first dean of the faculty. Subsequent deans were Prof. Janaka de Silva, Prof. Rajitha Wickremasinghe, Prof. Nilanthi de Silva,Prof. Prasantha S. Wijesinghe and Prof. Janaki de S. Hewavisenthi. The current dean
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2528-557: The Pandya kingdom . In the following centuries, there was substantial immigration from Eastern India, including additional migration from the Vanga Kingdom (Bengal), as well as Kalinga and Magadha . This influx led to an admixture of features of Eastern Prakrits. The development of Sinhala is divided into four epochs: The most important phonetic developments of Sinhala include: According to Wilhelm Geiger , an example of
2607-659: The Sinhalese people of Sri Lanka , who make up the largest ethnic group on the island, numbering about 16 million. Sinhala is also spoken as the first language by other ethnic groups in Sri Lanka, totalling about 2 million speakers as of 2001. It is written using the Sinhala script , which is a Brahmic script closely related to the Grantha script of South India. Sinhala is one of the official and national languages of Sri Lanka, alongside Tamil . Along with Pali , it played
2686-638: The UNESCO National Commission of Ceylon According to Wilhelm Geiger , Sinhala has features that set it apart from other Indo-Aryan languages. Some of the differences can be explained by the substrate influence of the parent stock of the Vedda language . Sinhala has many words that are only found in Sinhala, or shared between Sinhala and Vedda and not etymologically derivable from Middle or Old Indo-Aryan. Possible examples include kola for leaf in Sinhala and Vedda (although others suggest
2765-536: The Vedda language (an endangered, indigenous creole still spoken by a minority of Sri Lankans, mixing Sinhala with an isolate of unknown origin and from which Old Sinhala borrowed various aspects into its main Indo-Aryan substrate), and the Maldivian language . It has two main varieties, written and spoken, and is a conspicuous example of the linguistic phenomenon known as diglossia . Sinhala ( Siṁhala )
2844-853: The Wi-Fi Alliance introduced simplified Wi-Fi generational numbering to indicate equipment that supports Wi-Fi 4 ( 802.11n ), Wi-Fi 5 ( 802.11ac ) and Wi-Fi 6 ( 802.11ax ). These generations have a high degree of backward compatibility with previous versions. The alliance has stated that the generational level 4, 5, or 6 can be indicated in the user interface when connected, along with the signal strength. The most important standards affecting Wi‑Fi are: 802.11a, 802.11b, 802.11g, 802.11n ( Wi-Fi 4 ), 802.11h, 802.11i, 802.11-2007, 802.11–2012, 802.11ac ( Wi-Fi 5 ), 802.11ad, 802.11af, 802.11-2016, 802.11ah, 802.11ai, 802.11aj, 802.11aq , 802.11ax ( Wi-Fi 6 ), 802.11ay . Wi-Fi technology may be used to provide local network and Internet access to devices that are within Wi-Fi range of one or more routers that are connected to
2923-455: The 11 permitted in the United States for the 2.4 GHz band, while Japan has three more (12–14). 802.11a/h/j/n/ac/ax can use the 5 GHz U-NII band , which, for much of the world, offers at least 23 non-overlapping 20 MHz channels. This is in contrast to the 2.4 GHz frequency band where the channels are only 5 MHz wide. In general, lower frequencies have longer range but have less capacity. The 5 GHz bands are absorbed to
3002-464: The 13th century CE, recognised a category of words that exclusively belonged to early Sinhala. The grammar lists naram̆ba (to see) and koḷom̆ba (fort or harbour) as belonging to an indigenous source. Koḷom̆ba is the source of the name of the commercial capital Colombo . The consistent left branching syntax and the loss of aspirated stops in Sinhala is attributed to a probable South Dravidian substratum effect. This has been explained by
3081-608: The 2.4 gigahertz (120 mm) UHF and 5 gigahertz (60 mm) SHF radio bands, with the 6 gigahertz SHF band used in newer generations of the standard; these bands are subdivided into multiple channels. Channels can be shared between networks, but, within range, only one transmitter can transmit on a channel at a time. Wi-Fi's radio bands work best for line-of-sight use. Many common obstructions, such as walls, pillars, home appliances, etc., may greatly reduce range, but this also helps minimize interference between different networks in crowded environments. The range of an access point
3160-408: The 5 GHz band, 20 MHz, 40 MHz, 80 MHz, and 160 MHz channels are permitted with some restrictions, giving much faster connections. Wi-Fi is part of the IEEE 802 protocol family. The data is organized into 802.11 frames that are very similar to Ethernet frames at the data link layer, but with extra address fields. MAC addresses are used as network addresses for routing over
3239-427: The 802.11 protocol was released in 1997, and provided up to 2 Mbit/s link speeds. This was updated in 1999 with 802.11b to permit 11 Mbit/s link speeds. In 1999, the Wi-Fi Alliance formed as a trade association to hold the Wi-Fi trademark under which most IEEE 802.11 products are sold. The major commercial breakthrough came with Apple Inc. adopting Wi-Fi for their iBook series of laptops in 1999. It
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3318-573: The CSIRO's WLAN prototype test bed was chosen as Australia's contribution to the exhibition A History of the World in 100 Objects held in the National Museum of Australia . The name Wi-Fi , commercially used at least as early as August 1999, was coined by the brand-consulting firm Interbrand. The Wi-Fi Alliance had hired Interbrand to create a name that was "a little catchier than 'IEEE 802.11b Direct Sequence'." According to Phil Belanger,
3397-593: The Chemistry Department and three buildings for the Departments for Industrial Management, Microbiology and Zoology have now been completed. The science faculty was the first among the Sri Lankan universities to initiate the changeover from the traditional three subject (General) degree with end of year examinations to a more flexible course unit system, i.e., a modularized credit-based system in
3476-588: The Faculty of Computing and Technology (FCT) on 30 December 2015 and the Faculty commenced its operations on 18 January 2016. The Faculty will offer Postgraduate Programmes in the areas of Computer Science, Software Engineering, Information Technology and Engineering Technology. The Master of Information Technology in Education programme is currently being developed for the Ministry of Education to train ICT teachers in
3555-442: The Faculty of Graduates Studies. The University of Kelaniya Library, has a history spanning over 60 years. In parallel to Vidyalankara Pirivena became Vidyalankara University in 1959, the library was started with a collection of books belonging to Vidyalankara Pirivena. Subsequently, it was shifted to the current premises in 1977. Later, as this old building was insufficient to accommodate its growing collection and student population,
3634-411: The Faculty of Science; Departments of Linguistics, Fine Arts, Modern Languages and Hindi in the Faculty of Humanities; and Mass Communication and Library and Information Sciences in the Faculty of Social Sciences. The coat of arms of the University of Kelaniya is circular and consists of three concentric bands, the outermost of which contains the name of the university in Sinhala and English. The motto of
3713-615: The Internet. The coverage of one or more interconnected access points can extend from an area as small as a few rooms to as large as many square kilometres. Coverage in the larger area may require a group of access points with overlapping coverage. For example, public outdoor Wi-Fi technology has been used successfully in wireless mesh networks in London. An international example is Fon . Wi-Fi provides services in private homes, businesses, as well as in public spaces. Wi-Fi hotspots may be set up either free of charge or commercially, often using
3792-594: The LAN. Wi-Fi's MAC and physical layer (PHY) specifications are defined by IEEE 802.11 for modulating and receiving one or more carrier waves to transmit the data in the infrared, and 2.4, 3.6 , 5, 6, or 60 GHz frequency bands. They are created and maintained by the IEEE LAN/MAN Standards Committee ( IEEE 802 ). The base version of the standard was released in 1997 and has had many subsequent amendments. The standard and amendments provide
3871-660: The MBBS course, it conducts a BSc programme in speech and hearing sciences. There is a permanent academic staff of over 120 and in addition 40 temporary academic staff and over 60 visiting staff that includes consultants who are based in the affiliated teaching hospitals. The Faculty of Social Sciences, in student population, is the largest faculty in the University of Kelaniya. The faculty includes disciplines associated with Buddhist and Asian cultures, such as Pali and Buddhist Studies, Sinhala, Tamil, Sanskrit, Hindi, Japanese, Chinese and Korean ( One and only sri lankan University that has
3950-570: The U.S. Federal Communications Commission released parts of the ISM bands for unlicensed use for communications. These frequency bands include the same 2.4 GHz bands used by equipment such as microwave ovens , and are thus subject to interference. In 1991 in Nieuwegein , the NCR Corporation and AT&T invented the precursor to 802.11, intended for use in cashier systems, under
4029-543: The Wi-Fi Alliance did use the advertising slogan "The Standard for Wireless Fidelity" for a short time after the brand name was created, and the Wi-Fi Alliance was also called the "Wireless Fidelity Alliance Inc." in some publications. IEEE is a separate, but related, organization and their website has stated "WiFi is a short name for Wireless Fidelity". The name Wi-Fi was partly chosen because it sounds similar to Hi-Fi , which consumers take to mean high fidelity or high quality . Interbrand hoped consumers would find
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#17327803915424108-605: The basis for wireless network products using the Wi-Fi brand. While each amendment is officially revoked when incorporated in the latest version of the standard, the corporate world tends to market to the revisions because they concisely denote capabilities of their products. As a result, in the market place, each revision tends to become its own standard. In addition to 802.11, the IEEE 802 protocol family has specific provisions for Wi-Fi. These are required because Ethernet's cable-based media are not usually shared, whereas with wireless all transmissions are received by all stations within
4187-481: The capability. Some laptops that have a cellular modem card can also act as mobile Internet Wi-Fi access points. Many traditional university campuses in the developed world provide at least partial Wi-Fi coverage. Carnegie Mellon University built the first campus-wide wireless Internet network, called Wireless Andrew , at its Pittsburgh campus in 1993 before Wi-Fi branding existed. Many universities collaborate in providing Wi-Fi access to students and staff through
4266-569: The channel to be idle at the same time and thus begin transmission simultaneously. A collision happens when a station receives signals from multiple stations on a channel at the same time. This corrupts the transmitted data and can require stations to re-transmit. The lost data and re-transmission reduces throughput, in some cases severely. The 802.11 standard provides several distinct radio frequency ranges for use in Wi-Fi communications: 900 MHz , 2.4 GHz, 3.6 GHz, 4.9 GHz, 5 GHz, 6 GHz and 60 GHz bands . Each range
4345-506: The clients in the university, and IT for academic departments and administrative branches of the university. Video filming of special events of the university since 2005 is an additional service. Currently, the ICT Centre hosts web and mail services for all students and staff. They have a university-wide wifi network called "Kelani-WiFi". The ICT Centre is the first institutional Sri Lankan member of Eduroam . The Vidyodaya University
4424-432: The course unit system in 1986. Currently, Prof. Sudath Kalingamudali is the dean of the faculty of Science. The faculty consists of eight departments. The Faculty of Medicine, University of Kelaniya is on a 35-acre (140,000 m) campus at Ragama . It is one of eight medical schools in Sri Lanka. The faculty began classes with the admission of 120 students in September 1991 after the government, in 1989, nationalised
4503-519: The database. Signal fluctuations can cause errors, which can be reduced with noise-filtering techniques. For low precision, integrating Wi-Fi data with geographical and time information has been proposed. The Wi-Fi RTT capability introduced in IEEE 802.11mc allows for positioning based on round trip time measurement, an improvement over the RSSI method. The IEEE 802.11az standard promises further improvements in geolocation accuracy. Wi-Fi sensing
4582-477: The dean of science. The intake of the first batch of students was 57. Formal approval for the faculty was given by the minister of education in 1968. The science faculty was housed in the main building known as the "Science Block". Due to the continued increase in the student intake from year to year, a new lecture theatre complex and an auditorium were constructed in 1992, which enabled the intake of students to be increased to 450 in 2003. A new laboratory complex for
4661-544: The entire university. It conducts a computer literacy course open to all students and advanced courses in Visual Basic, web designing and hardware technology for the students who have successfully completed the computer literacy course. On-the-job training in the IT arena is provided for the young people just out of the university who work in the ICT Centre. The maintenance unit provides network, hardware and software support to
4740-478: The features that may be traced to Dravidian influence are: ඒක ēka it අලුත් aḷut new කියලා kiyalā having-said මම mama I දන්නවා dannavā know ඒක අලුත් කියලා මම දන්නවා ēka aḷut kiyalā mama dannavā it new having-said I know "I know that it is new." ඒක ēka it අලුත් aḷut new ද da Q කියලා kiyalā having-said මම mama I දන්නේ Wi-Fi Wi-Fi ( / ˈ w aɪ f aɪ / )
4819-414: The first cities in the United States to offer citywide free Wi-Fi (from MetroFi ). Minneapolis has generated $ 1.2 million in profit annually for its provider . In May 2010, the then London mayor Boris Johnson pledged to have London-wide Wi-Fi by 2012. Several boroughs including Westminster and Islington already had extensive outdoor Wi-Fi coverage at that point. New York City announced
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#17327803915424898-675: The institution, "Pannaya Parisujjhati" ("Self-purification is by insight"), is a quotation from the Alavaka-sutta of the Samyutta Nikaya, given in Sinhala characters in the same band. The middle band containing a creeper design encloses the innermost, which shows a full-blown lotus, signifying purity. These two designs are reminiscent of those occurring in the well-known moonstones at Anuradhapura. The Faculty of Science started functioning in October 1967 with Charles Dahanayake as
4977-607: The island of Ceylon came under British rule . During the career of Christopher Reynolds as a Sinhalese lecturer at the School of African and Oriental Studies, University of London , he extensively researched the Sinhalese language and its pre-1815 literature. The Sri Lankan government awarded him the Sri Lanka Ranjana medal for his work. He wrote the 377-page An anthology of Sinhalese literature up to 1815 , selected by
5056-542: The name WaveLAN . NCR's Vic Hayes , who held the chair of IEEE 802.11 for ten years, along with Bell Labs engineer Bruce Tuch, approached the Institute of Electrical and Electronics Engineers (IEEE) to create a standard and were involved in designing the initial 802.11b and 802.11a specifications within the IEEE. They have both been subsequently inducted into the Wi-Fi NOW Hall of Fame. In 1989 in Australia,
5135-452: The name catchy, and that they would assume this wireless protocol has high fidelity because of its name. Other technologies intended for fixed points, including Motorola Canopy , are usually called fixed wireless . Alternative wireless technologies include Zigbee , Z-Wave , Bluetooth and mobile phone standards . To connect to a Wi-Fi LAN, a computer must be equipped with a wireless network interface controller . The combination of
5214-514: The national education system. The faculty will conduct research in diverse fields of significant impact. The research enterprise at the Faculty of Computing and Technology will expand from fundamental Computer Science research to the development of new technologies with applications to the industry and society as a whole. The Faculty is planning to propose the following Research and Development Centres: Twenty-three postgraduate degree programmes and six postgraduate diploma programmes are coordinated by
5293-658: The newly built four-storied building was added to the library system in 2013. Presently, the library owns a collection of over 245,000 books and monographs relevant to various study programmes and research activities in the university. Furthermore, the library has subscribed to EBSCO HOST, JSTOR, Emerald, Oxford University Press, Taylor and Francis databases with access facilities for more than 20,000 academic e-journals and more than 100,000 e-books. The ICT Centre provides support services in IT-related teaching, research, internet services, staff development and hardware maintenance for
5372-566: The project, which was to be completed in 2015. Wi-Fi positioning systems use known positions of Wi-Fi hotspots to identify a device's location. It is used when GPS isn't suitable due to issues like signal interference or slow satellite acquisition. This includes assisted GPS , urban hotspot databases, and indoor positioning systems. Wi-Fi positioning relies on measuring signal strength ( RSSI ) and fingerprinting. Parameters like SSID and MAC address are crucial for identifying access points. The accuracy depends on nearby access points in
5451-551: The range that employ that radio channel. While Ethernet has essentially negligible error rates, wireless communication media are subject to significant interference. Therefore, the accurate transmission is not guaranteed so delivery is, therefore, a best-effort delivery mechanism. Because of this, for Wi-Fi, the Logical Link Control (LLC) specified by IEEE 802.2 employs Wi-Fi's media access control (MAC) protocols to manage retries without relying on higher levels of
5530-504: The receiver uses the destination address to determine whether the transmission is relevant to the station or should be ignored. A scheme known as carrier-sense multiple access with collision avoidance (CSMA/CA) governs the way stations share channels. With CSMA/CA stations attempt to avoid collisions by beginning transmission only after the channel is sensed to be idle, but then transmit their packet data in its entirety. CSMA/CA cannot completely prevent collisions, as two stations may sense
5609-400: The same channel also means that the data bandwidth is shared, so for example, available throughput to each device is halved when two stations are actively transmitting. As with other IEEE 802 LANs, stations come programmed with a globally unique 48-bit MAC address. The MAC addresses are used to specify both the destination and the source of each data packet. On the reception of a transmission,
5688-515: The same wireless channel, SSID, and other settings that have wirelessly connected, usually to the same access point. Each BSS is identified by a MAC address called the BSSID . The IEEE does not test equipment for compliance with their standards. The Wi-Fi Alliance was formed in 1999 to establish and enforce standards for interoperability and backward compatibility , and to promote wireless local-area-network technology. The Wi-Fi Alliance enforces
5767-445: The structure. Similarly, battery-powered routers may include a mobile broadband modem and a Wi-Fi access point. When subscribed to a cellular data carrier, they allow nearby Wi-Fi stations to access the Internet. Many smartphones have a built-in mobile hotspot capability of this sort, though carriers often disable the feature, or charge a separate fee to enable it. Standalone devices such as MiFi - and WiBro -branded devices provide
5846-415: The university premises. Sinhala language Sinhala ( / ˈ s ɪ n h ə l ə , ˈ s ɪ ŋ ə l ə / SIN -hə-lə, SING -ə-lə ; Sinhala: සිංහල , siṁhala , [ˈsiŋɦələ] ), sometimes called Sinhalese ( / ˌ s ɪ n ( h ) ə ˈ l iː z , ˌ s ɪ ŋ ( ɡ ) ə ˈ l iː z / SIN -(h)ə- LEEZ , SING -(g)ə- LEEZ ), is an Indo-Aryan language primarily spoken by
5925-762: The use of the Wi-Fi brand to technologies based on the IEEE 802.11 standards from the IEEE. Manufacturers with membership in the Wi-Fi Alliance, whose products pass the certification process, gain the right to mark those products with the Wi-Fi logo. Specifically, the certification process requires conformance to the IEEE 802.11 radio standards, the WPA and WPA2 security standards, and the EAP authentication standard. Certification may optionally include tests of IEEE 802.11 draft standards, interaction with cellular-phone technology in converged devices, and features relating to security set-up, multimedia, and power-saving. Not every Wi-Fi device
6004-639: The world. The UK has planned a similar project across major cities of the country, with the project's first implementation in the London Borough of Camden . Officials in South Korea's capital Seoul were moving to provide free Internet access at more than 10,000 locations around the city, including outdoor public spaces, major streets, and densely populated residential areas. Seoul was planning to grant leases to KT, LG Telecom, and SK Telecom. The companies were supposed to invest $ 44 million in
6083-579: Was created at the same time as the Vidyalankara University. Today Vidyodaya University is known as the University of Sri Jayewardenepura . Centre for Gender studies was founded by Prof. Maithree Wickremesinghe with the objective of initiating and conducting research on Gender issues and conducting educational programs on gender studies. Currently, Dr Sagarika Kannangara acts as the director of this centre. Hostel facilities are provided for selected numbers of students. Hostels are located inside and outside
6162-525: Was one of the first universities to begin teaching science in Sinhala and the first to restructure the traditional Arts Faculty into three faculties: Humanities, Social Sciences, and Commerce and Management. It has several departments not generally found in the Sri Lankan University system and some Kelaniya innovations have been adopted subsequently by other universities. These include the Departments of Industrial Management and Microbiology in
6241-429: Was the first mass consumer product to offer Wi-Fi network connectivity, which was then branded by Apple as AirPort . This was in collaboration with the same group that helped create the standard: Vic Hayes , Bruce Tuch, Cees Links , Rich McGinn, and others from Lucent . In the year 2000, Radiata, a group of Australian scientists connected to the CSIRO, were the first to use the 802.11a standard on chips connected to
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