25 résultats pour "safety"

• The Uses of Sidewalks: Safety and Contact

  2 First, a distinction between “the public and the private spaces”; second, streets must be constantly watched, and third sidewalk must be occupied by users: "Once a street is well equipped to handle strangers, once it has both a good, effective demarcation between private and public spaces and has a basic supply of activity and eyes, the more strangers the merrier" (40). By this quote, Jacobs means that people will have no apprehension by using a street or a sidewalk that meet the requirements...

• Space Shuttle - astronomy.

  The two SRBs, with their combined thrust of some 26 million newtons (about 5.8 million lb), provide most of the power for the first two minutes of flight. The SRBs takethe space shuttle to an altitude of 45 km (28 mi) and a speed of 4,973 km/h (3,094 mph) before they separate and fall back into the ocean to be retrieved,refurbished, and prepared for another flight. After the boosters fall away, the three main engines continue to provide thrust. These engines are clustered at the rear end of the...

• Pro Football Hall of Fame.

  Griese, Bob Quarterback 1990 Groza, Lou Offensive Tackle/Placekicker 1974 Guyon, Joe Halfback 1966 Halas, George Contributor 1963 Ham, Jack Linebacker 1988 Hampton, Dan Defensive End/Defensive Tackle 2002 Hannah, John Guard 1991 Harris, Franco Running Back 1990 Haynes, Mike Cornerback 1997 Healey, Ed Tackle 1964 Hein, Mel Center 1963 Hendricks, Ted Linebacker 1990 Henry, Wilbur (Pete) Tackle 1963 Herber, Arnie Quarterback 1966 Hewitt, Bill End 1971 Hickerson, Gene Guard 2007 Hinkle, Clarke Fullb...

• Pro Football Hall of Fame.

  Griese, Bob Quarterback 1990 Groza, Lou Offensive Tackle/Placekicker 1974 Guyon, Joe Halfback 1966 Halas, George Contributor 1963 Ham, Jack Linebacker 1988 Hampton, Dan Defensive End/Defensive Tackle 2002 Hannah, John Guard 1991 Harris, Franco Running Back 1990 Haynes, Mike Cornerback 1997 Healey, Ed Tackle 1964 Hein, Mel Center 1963 Hendricks, Ted Linebacker 1990 Henry, Wilbur (Pete) Tackle 1963 Herber, Arnie Quarterback 1966 Hewitt, Bill End 1971 Hickerson, Gene Guard 2007 Hinkle, Clarke Fullb...

• Gun Control.

  Bridgeport, Connecticut, alleged that gun manufacturers acted negligently (not carefully enough) when marketing and distributing their products. The cities contended that gun manufacturers oversupplied gun dealers in areas with weak gun restrictions, knowing that individuals from areas with tougher laws wouldpurchase the guns. Other cities, such as New Orleans, Louisiana, and Atlanta, Georgia, used a different approach in lawsuits against gun makers. These cities allegedthat gun makers failed to...

• Skiing.

  Safety is very important to all skiers, and all Alpine resorts have a ski patrol. The ski patrol’s responsibility is to take care of injured skiers, to mark hazardous spots ontrails, to make sure that trails are in good condition before opening them, and, at times, to act as traffic police in congested areas. Skiers are also responsible for takingtheir own safety into consideration, as well as that of others. Anyone who participates in the sport should be aware of the Skier’s Responsibility Code...

• Mountain Climbing.

  teeth on one side, and a straight, flat, metal blade called an adze on the other. Ice axes have many uses. One of the most common is to help the climber stay balanced on steep slopes. The climber swings the axe with a short, quick movement to lodge the pick in snow or ice, creating a secure anchor. If a climber should slip and beginsliding down a snowfield, a self-arrest can be performed by turning face down on the snow and burying the pick in the snow surface. The climber’s weight over the...

• Executive Branch.

  Popular pressure for increased regulation of businesses increased in the early 20th century. This pressure led to laws such as the Pure Food and Drug Acts, and the1906 Meat Inspection Act. Pressure for reform also led to creation of the Federal Trade Commission in 1914 to prevent unfair business practices. Worldwide depressionin the 1930s brought new demands that government take a more activist role in regulating businesses, protecting workers, and ensuring national economic stability. Aspart of...

• Attention-Deficit Hyperactivity Disorder.

  Although the drugs are prescribed most often to treat ADHD among children, increasingly adults are taking the drugs for ADHD. From 2002 to 2005 the number ofprescriptions written for adults reportedly increased by 90 percent. In the United States about 2.5 million children and about 1.5 million adults take ADHD drugs. Amember of the FDA advisory panel noted that adults are more likely to have a higher risk of heart problems. Most of the 25 sudden deaths, however, were amongchildren. The prelimin...

• Bicycle.

  narrow as possible to minimize weight and interference with pedaling. F Specialty Bicycles Many other types of bicycles are designed for special purposes. Although not as common as standard single-rider racing, touring, mountain, or recreational bicycles,they nonetheless have significant niches. Recumbent bicycles are bicycles on which the rider sits upright as if in a chair, with legs and feet stretched out in front. Because they support the rider’s lower back,recumbents allow the rider far mo...

• Diving (underwater).

  compensator (or control) device (BCD or BC), which the diver wears as a vest. By adding air to the BCD, the diver becomes more buoyant and rises. By releasing air,the diver becomes less buoyant and sinks. With minor adjustments of air, the diver can achieve neutral buoyancy. A third hose attaches to pressure gauges that diversuse to monitor how much air remains in the tank. A fourth hose attaches to a backup breathing device called an alternate air source, or octopus. Divers also wear a belt w...

• Atificiel

  Sustainability 2019,11 , 189 2 of 24Since the 1980s, many research was conducted to minimize the error of prediction through a method dubbed as gradient descent. This method is referred to as a Backpropagation algorithm for the training of the ANNs and it was applied to solve problems in different domains using few hidden layers [ 5,6]. Today, the availability of data has introduced the concept of machine learning as a subcategory to AI. Machine learning implies coding the computers to behave l...

• Camping.

  Commercial campgrounds serve as campsites for RV and car campers on the outskirts of national and state parks and along highways throughout North America.Owners of commercial campgrounds charge campers on a daily or weekly basis, and provide campsites equipped with hookups for electricity and water. They may alsoprovide such amenities as showers, laundry facilities, or a swimming pool. Many commercial campgrounds belong to a club or network that allows its members toreserve campsites in advance....

• Banking.

  loans, and some commercial loans in addition to checking accounts and time deposits. Credit unions, SLAs, and savings banks help encourage thriftiness by paying interest to consumers who put their money in savings deposits. Consequently, creditunions, SLAs, and savings banks are often referred to as thrift institutions. Of the various types of banks in the United States, commercial banks account for the greatest single source of the financial industry’s assets. In 2000 the 8,528commercial banks...

• Rice Wins MVP.

  him, but not to the point that the Bengals could cover him with one defender, which they tried to do for several plays. “Because of the sprained ankle, Jerry Rice wasoperating on nerve,” Bill Walsh, the 49ers' head coach, said in the press conference after the game, according to the New York Times. ” He said he felt great. But I knew he [didn't]. But they could simply not stay with him man for man.” When the Bengals chose to double-cover Rice, Montana hit Craig and, finally, Taylor. After t...

• Ice Skating.

  cold climate. Competitors for these events are chosen from the best skaters in each participating country, usually through preliminary national competitions. Speedskaters also compete on a World Cup circuit, which pits the world’s best skaters against one another during the year. A Figure Skating The major types of competitive figure skating are individual men’s and women’s competitions, pairs skating, ice dancing, and precision skating. In individualcompetitions a single skater performs requir...

• Ronald Reagan.

  deposed shah of Iran to enter the United States for medical treatment, a group of Iranian revolutionaries stormed the U.S. Embassy in Tehrān and held 53 Americansas hostages. United States media publicized the plight of the hostages and Carter’s failure to win their release. They were eventually released in January 1981, on theday of Reagan’s inauguration. The contrast between the television personalities of the two candidates was also very important. Carter’s stiff, nervous manner had never bee...

• Ronald Reagan - USA History.

  deposed shah of Iran to enter the United States for medical treatment, a group of Iranian revolutionaries stormed the U.S. Embassy in Tehrān and held 53 Americansas hostages. United States media publicized the plight of the hostages and Carter’s failure to win their release. They were eventually released in January 1981, on theday of Reagan’s inauguration. The contrast between the television personalities of the two candidates was also very important. Carter’s stiff, nervous manner had never bee...

• Nuclear Energy I INTRODUCTION Gundremmingen Nuclear Power Plant, Germany The first of three boiling-water nuclear reactors at Germany's Gundremmingen plant began operating in 1966 but was permanently shut down after being decommissioned in 1983.

  such as ¯U is induced by the absorption of a neutron as in producing cesium-140, rubidium-93, three neutrons, and 200 MeV, or 3.2 × 10 -11 J (7.7 × 10 -12 cal). A nuclear fission reaction releases 10 million times as much energy as is released in a typical chemical reaction. See Nuclear Chemistry. III NUCLEAR ENERGY FROM FISSION The two key characteristics of nuclear fission important for the practical release of nuclear energy are both evident in equation (2). First, the energy per fiss...

• Cellular Radio Telephone.

  There were more than 120 million wireless subscribers in the United States in 2001, according to the Cellular Telecommunications and Internet Association, with thenumber of new users increasing significantly each year. Forecasters and regulators did not anticipate this growth, however. Network equipment and start-up costs weresubstantial, and the cost to consumers was high. Providers had limited their networks to a small group of high-volume business users. Eventually, the providersrecognized th...

• Extreme Sports.

  racing events are the Raid Gauloises and the Eco-Challenge. Created in 1989 by French journalist Gerard Fusil, the Raid Gauloises is a grueling two-week adventure racein which five-person teams cross rugged and remote terrain. The inaugural Raid was held in New Zealand, and subsequent races have been staged in Costa Rica,Madagascar, Borneo, and Chile. The race has five separate stages designed to fit each location’s unique terrain. Stages may require horseback riding, white-waterpaddling, mounta...

• Submarine.

  B Propulsion Modern submarines use either diesel-electric or nuclear power to drive the sub's propeller and to provide internal electric power. Diesel-electric power emerged as themost efficient propulsion system for submarines in the early 20th century, following unsuccessful attempts to use steam or gasoline power. While on the surface, thesubmarine uses a diesel engine to drive the propeller and generate electricity. When submerged, a battery-driven electrical motor takes over for propulsion...

• Martin Van Buren.

  political ambitions. The Clintonians cited as one example of Van Buren's unscrupulous methods his support of a convention in 1821 to revise the state's constitution. Van Buren and hisBucktails said they wanted to make the constitution more democratic. The Clintonians retorted that the real aim was to oust them from office. Both sides were right. Therevised constitution introduced a needed extension of voting rights and improved the operation of the state government. However, it also removed many...

• Martin Van Buren

  political ambitions. The Clintonians cited as one example of Van Buren's unscrupulous methods his support of a convention in 1821 to revise the state's constitution. Van Buren and hisBucktails said they wanted to make the constitution more democratic. The Clintonians retorted that the real aim was to oust them from office. Both sides were right. Therevised constitution introduced a needed extension of voting rights and improved the operation of the state government. However, it also removed many...

• Railroads.

  III GAUGES The gauge of track is the distance between the inner edges of the rails at points 1.59 cm (0.626 in) below the top of the heads. In the United States, Canada, theUnited Kingdom, Mexico, Norway, Sweden, and much of continental Europe, the standard gauge is 143.51 cm (56.5 in). Why this measurement became the standard isa matter of speculation. Probably the tradition is inherited from early tramroads built to accommodate wagons with axles 1.5 m (5 ft) long; some of the early edge rail...