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3R (other)
3R or three Rs may refer to: * The three Rs, a widely used abbreviation for the basic elements of a primary school curriculum: ''reading, 'riting (writing), and 'rithmetic (arithmetic)'' * The three Rs, a widely used abbreviation for the waste management hierarchy: ''reduce, reuse, and recycle'' * The three Rs, an abbreviation for consumer remedies under Australian Consumer Law when consumer guarantees of goods are not satisfied: ''refund, replace, and repair'' * The three Rs (animal research), principles for ethical use of animals in testing: replacement, reduction, refinement * ''The 3Rs'', an experimental short film by David Lynch * 3R (optical regenerator), an optical communications repeater that performs reamplification, reshaping, and retiming * Intelsat 3R, a former communications satellite * Yaesu VX-3R, an ultra-compact dual-band amateur radio transceiver * British Rail Class 206, Southern Region designation 3R from 3-car Reading Line stock * 3R (print size), a standard c ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
The Three Rs
The three Rs (as in the letter ''R'') are three basic skills taught in schools: reading, writing and arithmetic (usually said as "reading, 'riting, and 'rithmetic"). The phrase appears to have been coined at the beginning of the 19th century. The term has also been used to name other triples (see Other uses). Origin and meaning The skills themselves are alluded to in St. Augustine's '' Confessions'': 'learning to read, and write, and do arithmetic'. The phrase is sometimes attributed to a speech given by Sir William Curtis circa 1807: this is disputed. An extended modern version of the three Rs consists of the "functional skills of literacy, numeracy and ICT". The educationalist Louis P. Bénézet preferred "to read", "to reason", "to recite", adding, "by reciting I did not mean giving back, verbatim, the words of the teacher or of the textbook. I meant speaking the English language."L. P. Benezet, "The Teaching of Arithmetic I, II, III: The Story of an Experiment," Journ ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Waste Management Hierarchy
Waste hierarchy is a tool used in the evaluation of processes that protect the environment alongside resource and energy consumption from most favourable to least favourable actions. The hierarchy establishes preferred program priorities based on sustainability. To be sustainable, waste management cannot be solved only with technical end-of-pipe solutions and an integrated approach is necessary. The waste management hierarchy indicates an order of preference for action to reduce and manage waste, and is usually presented diagrammatically in the form of a pyramid. The hierarchy captures the progression of a material or product through successive stages of waste management, and represents the latter part of the life-cycle for each product. The aim of the waste hierarchy is to extract the maximum practical benefits from products and to generate the minimum amount of waste. The proper application of the waste hierarchy can have several benefits. It can help prevent emissions o ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Australian Consumer Law
The Australian Consumer Laws (ACL), beinto the ''Competition and Consumer Act 2010'', is uniform legislation for consumer protection, applying as a law of the Commonwealth of Australia and is incorporated into the law of each of Australia's states and territories. The law commenced on 1 January 2011, replacing 20 different consumer laws across the Commonwealth and the states and territories, although certain other Acts continue to be in force. History The Australian Consumer Law was developed by agreement of the Council of Australian Governments. The ''Competition and Consumer Act 2010'' (referred to as Australian Consumer Law) was enacted into legislation by the ''Parliament of Australia'' to provide a more robust framework of protection for consumer transactions within Australia. Historically the ''States and Territories of Australia'' were responsible for their own legislation protecting the sale of goods, known as the '' Trade Practices Act 1974'', where the Australian Cons ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Three Rs (animal Research)
The Three Rs (3Rs) are guiding principles for more ethical use of animals in product testing and scientific research. They were first described by W. M. S. Russell and R. L. Burch in 1959.Russell, W.M.S. and Burch, R.L., (1959). ''The Principles of Humane Experimental Technique'', Methuen, London.A digital version of the Principles may be accessed for free on thwebsiteof Johns Hopkins University's Center for Alternatives to Animal Testing (CAAT). The 3Rs are: #Replacement: methods which avoid or replace the use of animals in research #Reduction: use of methods that enable researchers to obtain comparable levels of information from fewer animals, or to obtain more information from the same number of animals. #Refinement: use of methods that alleviate or minimize potential pain, suffering or distress, and enhance animal welfare for the animals used. The 3Rs have a broader scope than simply encouraging alternatives to animal testing, but aim to improve animal welfare and scientif ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
David Lynch
David Keith Lynch (born January 20, 1946) is an American filmmaker, visual artist and actor. A recipient of an Academy Honorary Award in 2019, Lynch has received three Academy Award nominations for Best Director, and the César Award for Best Foreign Film twice, as well as the Palme d'Or at the Cannes Film Festival and a Golden Lion award for lifetime achievement at the Venice Film Festival. In 2007, a panel of critics convened by ''The Guardian'' announced that "after all the discussion, no one could fault the conclusion that David Lynch is the most important film-maker of the current era", while AllMovie called him "the Renaissance man of modern American filmmaking". His work led to him being labeled "the first populist surrealist" by film critic Pauline Kael. Lynch studied painting before he began making short films in the late 1960s. His first feature-length film, the surrealist ''Eraserhead'' (1977), became a success on the midnight movie circuit, and he followed that ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
3R (optical Regenerator)
An optical communications repeater is used in a fiber-optic communications system to regenerate an optical signal. Such repeaters are used to extend the reach of optical communications links by overcoming loss due to attenuation of the optical fiber. Some repeaters also correct for distortion of the optical signal by converting it to an electrical signal, processing that electrical signal and then retransmitting an optical signal. Such repeaters are known as optical-electrical-optical (OEO) due to the conversion of the signal. These repeaters are also called regenerators for the same reason. Classification of regenerators Optical regenerations are classified into 3 categories by the 3 R's scheme. # R : reamplification of the data pulse alone is carried out. # 2R : in addition to reamplification, pulse reshaping is carried out. E.g.: Mamyshev 2R regenerator. # 3R : in addition to reamplification and reshaping, retiming of data pulse is done. All-optical regenerators An alterna ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Intelsat 3R
Intelsat 3R (formerly PAS-3R) is a communications satellite owned by Intelsat located at 43° West longitude, serving the Americas market. Satellite description PAS-3R was constructed by Hughes Aircraft Corporation, based on the HS-601 satellite bus. It had a mass at launch of , which decreased to around by the time it was operational. Designed for an operational life of 15 years, the spacecraft was equipped with 20 C-band and 20 Ku-band transponders. Its two solar panels, which had a span of generated 4.7 kW of power when the spacecraft first entered service, which was expected to drop to around 4.3 kW by the end of the vehicle's operational life. Launch Arianespace launched PAS-3R, using an Ariane 4 launch vehicle, flight number V82, in the Ariane 44L H10-3 configuration. The launch took place from ELA-2 at the Centre Spatial Guyanais, at Kourou in French Guiana, on 12 January 1996, at 23:10:00 UTC. Intelsat 3R Intelsat 3R, formerly PAS-3R, launched in January ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Yaesu VX-3R
The Yaesu VX series is a line of two sequences of compact amateur radio handheld transceivers produced by Yaesu. There is a line of ultra-compact lower-power dual-band (2 m and 70 cm) transceivers that started with the VX-1R and was later updated with the VX-2R and VX-3R. There is also a line of 5W tri-band transceivers that started with the VX-5R and was later updated with the VX-6R, VX-7R and VX-8R. Common features The VX line of radios all have features common to most modern hand held amateur radios: * CTCSS and DCS decode/encode and European Tone Burst * RF Squelch capability * Selectable deviation (wide/narrow) * DTMF transmission and memories. In addition, the VX line has features available on only some other brands: * Receive coverage in AM, NFM, and WFM * Wide-band receive coverage, from 500 kHz up to 999 MHz * User-selectable 10 dB attenuator * Ultra-compact size * Channel memories (including frequency, CTCSS/DCS squelch tone and mode, repeater offset, alp ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
British Rail Class 206
The British Rail Class 206 or 3R was a type of Diesel-electric multiple unit (DEMU), introduced in 1964. They were not 'built' as such but rather re-formed from Class 201 and EPB vehicles for use on -- (North Downs Line) services. Six three-car sets were created, numbered 1201-1206. Creation By 1964, the majority of services on the Southern Region of British Railways had been converted to diesel and electric operation. However, steam locomotives continued to operate the entire service on the North Downs Line. New trains for that route could not be justified because passenger numbers were relatively low. Following service cuts on the Hastings Line, twelve carriages from Class 201 diesel-electric units were available for use, so a decision was made to combine those vehicles with six redundant driving trailers from 2-EPB electric multiple units (EMU). Several changes were made to the vehicles before they entered service. The EPB vehicles were fitted with buckeye couplers to al ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
3R (print Size)
Standard photographic print sizes are used in photographic printing. Cut sheets of paper meant for printing photographs are commonly sold in these sizes. Many nominal and effective sizes are specified in international standard ISO 1008 using millimeters only, although most are clearly derived from integer-inch lengths. They are highlighted in the table below. United States In the US, size names are often denoted with a code of the format ''n''R, where the number ''n'' represents the length of the shorter edge in inches. In the normal series, the long edge is the length of the short edge plus 2 inches (10 in or less) or 3 inches (11 in and above). The alternative Super series, denoted S''n''R, ''n''R Plus or ''n''R+, has an aspect ratio (image), aspect ratio of (or as close as possible) and thus provides a better fit for standard 135 film (35 mm) at sizes of 8 inches or above. 5R is twice the size of a 2R print, 6R twice the size of a 4R print and S8R twice the ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Junior Forest Wardens
The Junior Forest Wardens (JFW) is a Canadian volunteer-led organization focused on developing a wild lands conservation ethic in youth. JFW clubs have operated at various times across Canada. As of 2019, clubs are active in British Columbia, Alberta, Saskatchewan, and Newfoundland and Labrador. History The organization is almost a 100 years old. It began in the 1920s, when a group of boys reported a forest fire to a local forest ranger in the province of British Columbia. The magazine ''Forest and Outdoors'', which was published by the Canadian Forestry Association (CFA), devoted a section to the activities, interests, and education of children. When a story was published in 1929 about how two boys discovered a small forest fire on Snug Cove on Bowen Island in British Columbia and assisted a Ranger in putting it out, an interest in this type of assistance grew. In the publicity that followed this incident, boys across the province wrote to find out what they could do to help i ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
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