An unmanned aerial vehicle (UAV), commonly known as a drone, is an aircraft without any human pilot, crew, or passengers on board. UAVs were originally developed through the twentieth century for military missions too "dull, dirty or dangerous" for humans, and by the twenty-first, they had become essential assets to most militaries. As control technologies improved and costs fell, their use expanded to many non-military applications. These include aerial photography, area coverage, precision agriculture, forest fire monitoring, river monitoring, environmental monitoring, policing and surveillance, infrastructure inspections, smuggling, product deliveries, entertainment, and drone racing.
In electronics, a remote control is an electronic device used to operate another device from a distance, usually wirelessly. In consumer electronics, a remote control can be used to operate devices such as a television set, DVD player or other digital home media appliance. A remote control can allow operation of devices that are out of convenient reach for direct operation of controls. They function best when used from a short distance. This is primarily a convenience feature for the user. In some cases, remote controls allow a person to operate a device that they otherwise would not be able to reach, as when a garage door opener is triggered from outside.
Radio control is the use of control signals transmitted by radio to remotely operate a device. Examples of simple radio control systems are garage door openers and keyless entry systems for vehicles, in which a small handheld radio transmitter unlocks or opens doors. Radio control is also used for control of model vehicles from a hand-held radio transmitter. Industrial, military, and scientific research organizations make use of radio-controlled vehicles as well. A rapidly growing application is control of unmanned aerial vehicles for both civilian and military uses, although these have more sophisticated control systems than traditional applications.
A non-directional beacon (NDB) or non-directional radio beacon is a radio beacon which does not include inherent directional information. Radio beacons are radio transmitters at a known location, used as an aviation or marine navigational aid. NDB are in contrast to directional radio beacons and other navigational aids, such as low-frequency radio range, VHF omnidirectional range (VOR) and tactical air navigation system (TACAN).
A directional antenna or beam antenna is an antenna which radiates or receives greater radio wave power in specific directions. Directional antennas can radiate radio waves in beams, when greater concentration of radiation in a certain direction is desired, or in receiving antennas receive radio waves from one specific direction only. This can increase the power transmitted to receivers in that direction, or reduce interference from unwanted sources. This contrasts with omnidirectional antennas such as dipole antennas which radiate radio waves over a wide angle, or receive from a wide angle.
CBC Radio is the English-language radio operations of the Canadian Broadcasting Corporation. The CBC operates a number of radio networks serving different audiences and programming niches, all of which are outlined below.
RTÉ Radio 1 is an Irish national radio station owned and operated by RTÉ and is the direct descendant of Dublin radio station 2RN, which began broadcasting on a regular basis on 1 January 1926.
Anthorn Radio Station is a naval and government radio transmitting station located near Anthorn, Cumbria, England, overlooking the Solway Firth, and is operated by Babcock International. It has three transmitters: one VLF; one LF; and an eLORAN transmitter.
Vatican Radio is the official broadcasting service of Vatican City.
A radio-controlled aircraft is a small flying machine that is radio controlled by an operator on the ground using a hand-held radio transmitter. The transmitter continuously communicates with a receiver within the craft that sends signals to servomechanisms (servos) which move the control surfaces based on the position of joysticks on the transmitter. The control surfaces, in turn, directly affect the orientation of the plane.
Yosemite Sam is the nickname given by DXers to a rumored numbers station that was heard making intermittent broadcasts between December 19, 2004 and February 16, 2005. It transmitted on several shortwave frequencies in dual side band: 3700 kHz, 4300 kHz, 6500 kHz, and 10500 kHz. The nickname is taken from the Warner Bros. Cartoons character Yosemite Sam, whose voice was always played as part of the unusual transmission.
A radio-controlled helicopter is model aircraft which is distinct from a RC airplane because of the differences in construction, aerodynamics, and flight training. Several basic designs of RC helicopters exist, of which some are more maneuverable than others. The more maneuverable designs are often harder to fly, but benefit from greater aerobatic capabilities.
KRWG-TV is a PBS member television station in Las Cruces, New Mexico, United States. The station is owned by the Regents of New Mexico State University. KRWG-TV's studios are located at Milton Hall on the NMSU campus in Las Cruces, and its transmitter is located atop Tortugas Mountain in central Doña Ana County. KRWG-TV's signal is relayed on low-power translator stations across southern New Mexico.
Robert C. Michelson is an American engineer and academic who invented the entomopter, a biologically inspired flapping-winged aerial robot, and who established the International Aerial Robotics Competition. Michelson's career began at the U.S. Naval Research Laboratory. He later became a member of the research faculty at the Georgia Institute of Technology. He is the author of three U.S. patents and over 100 journal papers, book chapters and reports. Michelson is the recipient of the 1998 AUVSI Pioneer Award and the 2001 Pirelli Award for the diffusion of scientific culture as well as the first Top Pirelli Prize.
WJAG is a commercial radio station broadcasting a talk radio format. It is licensed to Norfolk, Nebraska, and covers parts of Nebraska, Iowa and South Dakota. It was founded in 1922 by the Huse Publishing Company, publisher of the Norfolk Daily News, and since 1956 to a subsidiary, WJAG, Inc. The studios are at 525 Norfolk Avenue in the newspaper headquarters.
First-person view (FPV), also known as remote-person view (RPV), or video piloting, is a method used to control a radio-controlled vehicle from the driver or pilot's viewpoint. Most commonly it is used to pilot a radio-controlled aircraft or other type of unmanned aerial vehicle (UAV) such as a military drone. The operator gets a first-person perspective from an onboard camera that feeds video to FPV goggles or a monitor. More sophisticated setups include a pan-and-tilt gimbaled camera controlled by a gyroscope sensor in the pilot's goggles and with dual onboard cameras, enabling a true stereoscopic view.
Radio is the technology of communicating using radio waves. Radio waves are electromagnetic waves of frequency between 3 hertz (Hz) and 300 gigahertz (GHz). They are generated by an electronic device called a transmitter connected to an antenna which radiates the waves. They are received by another antenna connected to a radio receiver. In addition to communication, radio is used for radar, radio navigation, remote control, remote sensing, and other applications.
Wandering occurs when a person with dementia roams around and becomes lost or confused about their location. It is a common behavior that can cause great risk for the person, and is often the major priority for caregivers. It is estimated to be the most common form of disruption from people with dementia within institutions. Although it occurs in several types of dementia, wandering is especially common in people with Alzheimer's disease (AD). People with dementia often wander because they are stressed, looking for someone or something, attending to basic needs, engaging in past routines, or with visual-spatial problems. Other times, they may wander without aim at all.
Silver Alert is a public notification system in the United States to broadcast information about missing persons – especially senior citizens with Alzheimer's disease, dementia, or other mental disabilities – in order to aid in locating them.
Life Flows On (Crematorium) is a 2016 Indian English-language drama film directed by Vishaal Nityanand. The film has Indian and European cast and crew, produced by Vishaal Nityanand Films, Vikas Batra and Sanjeev Saroha. It's a film dedicated to Global Dementia Challenge and Elderly care, deals with the lives of three dementia patients. The film had its world premiere at ‘Jagran Film Festival’ on 1 October 2016. It has been released in India on 21 October 2016, with Carnival Cinemas.
