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"Executive may refer to: Role, title, or function * Executive (government), branch of government that has authority and responsibility for the administration of state bureaucracy * Executive, a senior management role in an organization Chief executive officer (CEO), one of the highest-ranking corporate officers (executives) or administrators Executive director, the senior manager of an organization, company, or corporation Executive education, term used for programs at graduate-level business schools that aim to educate managers or entrepreneurs Executive officer, a high-ranking member of a corporation body, government or military Business executive, a person responsible for running an organization Music executive or record executive, person within a record label who works in senior management Studio executive, employee of a film studio Executive producer, a person who oversees the production of an entertainment product * Account executive, a job title given by a number of marketing agencies (usually to trainee staff who report to account managers) * Executive functions or executive system, theorized cognitive system in psychology that controls and manages other cognitive processes Arts, entertainment, and media * Executive (magazine), a Lebanese business monthly * The Executive (magazine), a Singaporean business monthly * The Executive, a fictional raincoat in the Seinfeld episode "The Raincoats" * The Executive, a musical band including Andrew Ridgeley and George Michael before the formation of Wham! Brands and enterprises * Chrysler Executive, a car offered 1983–1986 * Sinclair Executive, an electronic calculator offered in the early 1970s Computing and Technology * Executive (operating system), the operating system for the ICL 290x range of computers * The Windows Executive, internal part of modern Microsoft Windows operating systems Other uses * Executive car, in Britain: an automobile larger than a large family car * Executive paper size (often ) See also Executive order (disambiguation), a form of act issued by a number of the executive branch of a central government "
"A Gold code, also known as Gold sequence, is a type of binary sequence, used in telecommunication (CDMA) and satellite navigation (GPS). Gold codes are named after Robert Gold. Gold codes have bounded small cross-correlations within a set, which is useful when multiple devices are broadcasting in the same frequency range. A set of Gold code sequences consists of 2n \+ 1 sequences each one with a period of 2n − 1\. A set of Gold codes can be generated with the following steps. Pick two maximum length sequences of the same length 2n − 1 such that their absolute cross-correlation is less than or equal to 2(n+2)/2, where n is the size of the linear feedback shift register used to generate the maximum length sequence (Gold '67). The set of the 2n − 1 exclusive-ors of the two sequences in their various phases (i.e. translated into all relative positions) together with the two maximum length sequences form a set of 2n \+ 1 Gold code sequences. The highest absolute cross- correlation in this set of codes is 2(n+2)/2 \+ 1 for even n and 2(n+1)/2 \+ 1 for odd n. The exclusive or of two different Gold codes from the same set is another Gold code in some phase. Within a set of Gold codes about half of the codes are balancedthe number of ones and zeros differs by only one. Gold codes are used in GPS. The GPS C/A ranging codes are Gold codes of period 1,023. See also *Kasami code *Hadamard code *Zadoff–Chu sequence *Complementary sequences *Space Network – a NASA system that uses Gold codes References Further reading * Line codes de:Linear rückgekoppeltes Schieberegister#Gold-Folgen "
"The engineering of this roundabout in Bristol, England, attempts to make traffic flow free-moving Transportation engineering or transport engineering is the application of technology and scientific principles to the planning, functional design, operation and management of facilities for any mode of transportation in order to provide for the safe, efficient, rapid, comfortable, convenient, economical, and environmentally compatible movement of people and goods transport. The planning aspects of transportation engineering relate to elements of urban planning, and involve technical forecasting decisions and political factors. Technical forecasting of passenger travel usually involves an urban transportation planning model, requiring the estimation of trip generation (number of purposeful trips), trip distribution (destination choice, where the traveler is going), mode choice (mode that is being taken), and route assignment (the streets or routes that are being used). More sophisticated forecasting can include other aspects of traveler decisions, including auto ownership, trip chaining (the decision to link individual trips together in a tour) and the choice of residential or business location (known as land use forecasting). Passenger trips are the focus of transportation engineering because they often represent the peak of demand on any transportation system. A review of descriptions of the scope of various committees indicates that while facility planning and design continue to be the core of the transportation engineering field, such areas as operations planning, logistics, network analysis, financing, and policy analysis are also important, particularly to those working in highway and urban transportation. The National Council of Examiners for Engineering and Surveying (NCEES) list online the safety protocols, geometric design requirements, and signal timing. Transportation engineering, primarily involves planning, design, construction, maintenance, and operation of transportation facilities. The facilities support air, highway, railroad, pipeline, water, and even space transportation. The design aspects of transportation engineering include the sizing of transportation facilities (how many lanes or how much capacity the facility has), determining the materials and thickness used in pavement designing the geometry (vertical and horizontal alignment) of the roadway (or track). Before any planning occurs an engineer must take what is known as an inventory of the area or, if it is appropriate, the previous system in place. This inventory or database must include information on population, land use, economic activity, transportation facilities and services, travel patterns and volumes, laws and ordinances, regional financial resources, and community values and expectations. These inventories help the engineer create business models to complete accurate forecasts of the future conditions of the system. Operations and management involve traffic engineering, so that vehicles move smoothly on the road or track. Older techniques include signs, signals, markings, and tolling. Newer technologies involve intelligent transportation systems, including advanced traveler information systems (such as variable message signs), advanced traffic control systems (such as ramp meters), and vehicle infrastructure integration. Human factors are an aspect of transportation engineering, particularly concerning driver-vehicle interface and user interface of road signs, signals, and markings. Highway engineering Engineers in this specialization: *Handle the planning, design, construction, and operation of highways, roads, and other vehicular facilities as well as their related bicycle and pedestrian realms *Estimate the transportation needs of the public and then secure the funding for projects *Analyze locations of high traffic volumes and high collisions for safety and capacity *Use engineering principles to improve the transportation system *Utilize the three design controls, which are the drivers, the vehicles, and the roadways themselves Railroad engineering Railway engineers handle the design, construction, and operation of railroads and mass transit systems that use a fixed guideway (such as light rail or monorails). Typical tasks include determining horizontal and vertical alignment design, station location and design, and construction cost estimating. Railroad engineers can also move into the specialized field of train dispatching which focuses on train movement control. Railway engineers also work to build a cleaner and safer transportation network by reinvesting and revitalizing the rail system to meet future demands. In the United States, railway engineers work with elected officials in Washington, D.C. on rail transportation issues to make sure that the rail system meets the country's transportation needs. Port and harbor engineering Port and harbor engineers handle the design, construction, and operation of ports, harbors, canals, and other maritime facilities. Airport engineering Airport engineers design and construct airports. Airport engineers must account for the impacts and demands of aircraft in their design of airport facilities. These engineers must use the analysis of predominant wind direction to determine runway orientation, determine the size of runway border and safety areas, different wing tip to wing tip clearances for all gates and must designate the clear zones in the entire port. See also * Bicycle transportation engineering * Heuristic routing * Individual mobility * Interplanetary Transport Network * Pavement engineering * Principles of intelligent urbanism * Space syntax (pedestrian and vehicular analysis using similar techniques to standard transportation engineering) * Transportation forecasting * Transportation planning * Utility cycling * Rail transport by country * Energy efficiency in transport References External links http://www.ite.org Institute of Transportation Engineers, a professional society for transportation engineers * http://www.itsa.org ITS America * http://www.asce.org ASCE Engineering disciplines Civil engineering "