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Jeff Lawrence (entrepreneur)
Jeff Lawrence (born November 14, 1957) is an American entrepreneur, technologist and philanthropist. He founded and ran a number telecommunications systems companies. He sold one of his business to Intel in 2000 and worked for Intel until 2002. As a result, together with his wife he founded The Lawrence Foundation giving out grants to non-profit environmental, human services, and other causes. Early life Jeff was born in Cleveland, Ohio. His father was Ray Lawrence and his mother was Grace Lawrence. He has two younger sisters, Connie and Lisa. Jeff was married to Diane Troth, who died on November 30, 2016, and they have two children, Christopher and Kathy. He lived briefly in Northridge, California and New York, New York, and grew up in Van Nuys, California and Studio City, California. He was very interested in science and technology as a child. While going to college Jeff worked at Butterfly Media Dimensions, a company founded by Allen Secher, a rabbi, civil rights acti ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Cleveland
Cleveland is a city in the U.S. state of Ohio and the county seat of Cuyahoga County. Located along the southern shore of Lake Erie, it is situated across the Canada–U.S. maritime border and approximately west of the Ohio-Pennsylvania state border. Cleveland is the most populous city on Lake Erie, the second-most populous city in Ohio, and the 53rd-most populous city in the U.S. with a population of 372,624 in 2020. The city anchors the Cleveland metropolitan area, the 33rd-largest in the U.S. at 2.18 million residents, as well as the larger Cleveland– Akron– Canton combined statistical area with 3.63 million residents. Cleveland was founded in 1796 near the mouth of the Cuyahoga River as part of the Connecticut Western Reserve in modern-day Northeast Ohio by General Moses Cleaveland, after whom the city was named. The city's location on the river and the lake shore allowed it to grow into a major commercial and industrial metropolis by the late 19th century, ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Enterprise Private Network
An intranet is a computer network for sharing information, easier communication, collaboration tools, operational systems, and other computing services within an organization, usually to the exclusion of access by outsiders. The term is used in contrast to public networks, such as the Internet, but uses the same technology based on the Internet protocol suite. An organization-wide intranet can constitute an important focal point of internal communication and collaboration, and provide a single starting point to access internal and external resources. In its simplest form, an intranet is established with the technologies for local area networks (LANs) and wide area networks (WANs). Many modern intranets have search engines, user profiles, blogs, mobile apps with notifications, and events planning within their infrastructure. An intranet is sometimes contrasted to an extranet. While an intranet is generally restricted to employees of the organization, extranets may also be accesse ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
1987 Stock Market Crash
Black Monday (also known as Black Tuesday in some parts of the world due to time zone differences) was a global, severe and largely unexpected stock market crash on Monday, October 19, 1987. Worldwide losses were estimated at US$1.71 trillion. The severity sparked fears of extended economic instability or a reprise of the Great Depression. Possible explanations for the initial fall in stock prices include a fear that stocks were significantly overvalued and were certain to undergo a correction, persistent US trade and budget deficits, and rising interest rates. Another explanation for Black Monday comes from the decline of the dollar, followed by a lack of faith in governmental attempts to stop that decline. In February 1987, leading industrial countries had signed the Louvre Accord, hoping that monetary policy coordination would stabilize international money markets, but doubts about the viability of the accord created a crisis of confidence. The fall may have been accelerat ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Wide Area Network
A wide area network (WAN) is a telecommunications network that extends over a large geographic area. Wide area networks are often established with leased telecommunication circuits. Businesses, as well as schools and government entities, use wide area networks to relay data to staff, students, clients, buyers and suppliers from various locations around the world. In essence, this mode of telecommunication allows a business to effectively carry out its daily function regardless of location. The Internet may be considered a WAN. Many WANs are, however, built for one particular organization and are private. WANs can be separated from local area networks (LANs) in that the latter refers to physically proximal networks. Design options The textbook definition of a WAN is a computer network spanning regions, countries, or even the world. However, in terms of the application of communication protocols and concepts, it may be best to view WANs as computer networking technologies used ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Local Area Network
A local area network (LAN) is a computer network that interconnects computers within a limited area such as a residence, campus, or building, and has its network equipment and interconnects locally managed. LANs facilitate the distribution of data and sharing network devices, such as printers. The LAN contrasts the wide area network (WAN), which not only covers a larger geographic distance, but also generally involves Leased line, leased telecommunication circuits or Internet links. An even greater contrast is the Internet, which is a system of globally connected business and personal computers. Ethernet and Wi-Fi are the two most common technologies used for local area networks; historical network technologies include ARCNET, Token Ring, and LocalTalk. Cabling Most wired network infrastructures utilize Category 5 cable, Category 5 or Category 6 cable, Category 6 twisted pair cabling with RJ45 (telecommunications), RJ45 compatible terminations. This medium provides physical ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Richardson, Texas
Richardson is a city in Dallas and Collin counties in the U.S. state of Texas. As of the 2020 United States census, the city had a total population of 119,469. Richardson is an inner suburb of the city of Dallas. It is home to the University of Texas at Dallas and the Telecom Corridor, with a high concentration of telecommunications companies. More than 5,000 businesses have operations within Richardson's , including many of the world's largest telecommunications and networking companies, such as AT&T, Verizon, Cisco Systems, Samsung, ZTE, MetroPCS, Texas Instruments, Qorvo, and Fujitsu. Richardson's largest employment base is provided by the insurance industry, with Blue Cross and Blue Shield of Texas's headquarters, a regional hub for the insurance company GEICO, regional offices for United Healthcare, and one of State Farm Insurance's three national regional hubs located in the community. History Emigrants from Kentucky and Tennessee settled near present-day Richa ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Marina Del Rey
Marina del Rey ( Spanish for "Marina of the King") is an unincorporated seaside community in Los Angeles County, California, United States. The eponymous harbor is a major boating and water recreation destination of the Greater Los Angeles area. The port is North America's largest man-made small-craft harbor and is home to approximately 5,000 boats. The area is a popular tourism destination for both land and water activities such as paddle board and kayak rentals, dining cruises, and yacht charters. Land activities include bicycling on several bicycle paths, walking paths along the waterfront, and birdwatching (birding). Wildlife watching opportunities include California sea lions and harbor seals. Dolphins and whales occasionally visit the deeper waters of the harbor. This Westside locale is approximately south of Santa Monica, north of Los Angeles International Airport, and west-southwest of downtown Los Angeles. The harbor is owned by Los Angeles County and managed by ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Packet-switched Network
In telecommunications, packet switching is a method of grouping data into short messages in fixed format, i.e. '' packets,'' that are transmitted over a digital network. Packets consist of a header and a payload. Data in the header is used by networking hardware to direct the packet to its destination, where the payload is extracted and used by an operating system, application software, or higher layer protocols. Packet switching is the primary basis for data communications in computer networks worldwide. During the early 1960s, American engineer Paul Baran developed a concept he called ''distributed adaptive message block switching'', with the goal of providing a fault-tolerant, efficient routing method for telecommunication messages as part of a research program at the RAND Corporation, funded by the United States Department of Defense. His ideas contradicted then-established principles of pre-allocation of network bandwidth, exemplified by the development of telecommun ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Datapac
DATAPAC, or Datapac in some documents, was Canada's packet switched X.25-equivalent data network. Initial work on a data-only network started in 1972 and was announced by Bell Canada in 1974 as Dataroute. DATAPAC was implemented by adding packet switching to the existing Dataroute networks. It opened for use in 1976 as the world's first public data network designed specifically for X.25. Operated first by Trans-Canada Telephone System, then Telecom Canada, then the Stentor Alliance, it finally reverted to Bell Canada when the Stentor Alliance was dissolved in 1999. Like most X.25 networks in the western world, DATAPAC services were largely replaced by TCP/IP in the 1990s and 2000s. Bell phased out the service on 31 December 2009. History Bell Canada had long offered leased lines to large business customers like banks and insurance companies who needed to move data between their offices. The company offered only the physical link, it was up to the customers to provide the equipment ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
AT&T
AT&T Inc., an abbreviation for its predecessor's former name, the American Telephone and Telegraph Company, is an American multinational telecommunications holding company headquartered at Whitacre Tower in Downtown Dallas, Texas. It is the world's List of telecommunications companies, third largest telecommunications company by revenue and the List of mobile network operators in the United States, third largest wireless carrier in the United States behind T-Mobile US, T-Mobile and Verizon. As of 2023, AT&T was ranked 32nd on the Fortune 500, ''Fortune'' 500 rankings of the largest United States corporations, with revenues of $122.4 billion. The modern company to bear the AT&T name began its history as the American District Telegraph Company, formed in St. Louis in 1878. After expanding services to Arkansas, Kansas, Oklahoma and Texas through a series of mergers, it became the Southwestern Bell Telephone Company in 1920. Southwestern Bell was a subsidiary of AT&T Corporation, ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Trans-Canada Telephone System
The Stentor Alliance was a formal alliance of Canada's major telecommunications companies, specifically its incumbent local exchange carriers. It derives its name from the Greek mythological figure Stentor. The system originally formed in 1931 as the Telephone Association of Canada, soon becoming the Trans-Canada Telephone System and operating under this name for most of its history. It was briefly known as Telecom Canada before becoming Stentor in 1992. The group began dissolving in 1999, with the last unit closing in 2004. The alliance comprised the following companies at the time of inception: * Alberta Government Telephones, now Telus * BC Tel, now part of Telus * Bell Canada * Island Telephone Company, now part of Bell Aliant * Manitoba Telephone System, now Bell MTS * Maritime Telephone and Telegraph Company, now part of Bell Aliant * NBTel, now part of Bell Aliant * Newfoundland Telephone, now part of Bell Aliant * Northwestel (associate member) * Québec Téléph ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
South African Post Office
The South African Post Office (often referred to as SA Post Office, or simply SAPO) is the national postal service of South Africa. As a state owned enterprise, its only shareholder is the South African government. With the institution that eventually became the Post Office having opened in 1792, SAPO is the oldest institution in South Africa. In terms of South African law, the Post Office is the only entity that is legally allowed to accept reserved mail, and as such, it operates a monopoly. It employs over 16,480 people and operates more than 1,400 postal outlets throughout the country, and therefore has a presence in almost every single town and city in South Africa. History The history of postal services in Southern Africa can be traced back over 500 years. In 1500, the captain of a Portuguese ship, Petro D'Ataide, placed a letter in a milkwood tree at Mossel Bay. He reported the sinking of three ships in his fleet, including that of Bartolomeu Dias, during a heavy stor ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
