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Lifting Diagram
Lifting may refer to: *Manual handling of loads *Raising objects upwards, for example with lifting equipment *Weightlifting, lifting of weights for various ends **Olympic weightlifting, an Olympic sport that tests explosive strength **Powerlifting, a sport that tests limit strength * An undesirable type of movement in the sport of racewalking *Shoplifting, an unnoticed theft of goods from an open retail establishment * Facelifting, a type of cosmetic surgery * Lift, a morphism in mathematics * Lifting theory, a notion in measure theory * Lifting scheme (wavelets) * Lambda lifting Lambda lifting is a meta-process that restructures a computer program so that functions are defined independently of each other in a global scope. An individual "lift" transforms a local function into a global function. It is a two step process ..., meta-process that defines functions independently of each other in a global scope * Taking an inference rule in propositional logic and adapting it for pre ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Manual Handling Of Loads
Manual handling of loads (MHL), manual material handling (MMH) involves the use of the human body to lift, lower, carry or transfer loads. The average person is exposed to manual lifting of loads in the work place, in recreational atmospheres, and even in the home. To properly protect one from injuring themselves, it can help to understand general body mechanics. Manual Handling of Materials- Hazards and Injuries Manual handling of materials can be found in any workplace from offices to heavy industrial and manufacturing facilities. Often times, manual material handling entails tasks such as lifting, climbing, pushing, pulling, and pivoting, all of which pose the risk of injury to the back and other skeletal systems which can often lead to Musculoskeletal Disorders. Musculoskeletal disorders can be defined as “Musculoskeletal disorders often involve strains and sprains to the lower back, shoulders, and upper limbs.” According to a Department of Labor study published in 1990, ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Lifting Equipment
Lifting equipment, also known as lifting gear, is a general term for any equipment that can be used to lift and lower loads. Types of lifting equipment include heavy machinery such as the patient lift, overhead cranes, forklifts, jacks, building cradles, and passenger lifts, and can also include smaller accessories such as chains, hooks, and rope. Generally, this equipment is used to move material that cannot be moved with manual labor, and are tools used in most work environments, such as warehouses, and is a requirement for most construction projects, such as bridges and buildings. This equipment can also be used to equip a larger number of packages and goods, requiring less persons to move material. Lifting equipment includes any form of equipment that is used for vertical lifting, and equipment used to move material horizontally is not considered lifting equipment, nor is equipment designed to support. As lifting equipment can be dangerous to use, it is a common subject of sa ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Weightlifting
Weightlifting generally refers to activities in which people lift Weight training#Equipment, weights, often in the form of dumbbells or barbells. People lift various kinds of weights for a variety of different reasons. These may include various types of competition; promoting health and fitness; developing physical strength; or developing a muscular physique, possibly with the goal of engaging in competitive bodybuilding. According to an article in ''The New York Times'', lifting weights can prevent some disabilities, increase metabolism, and lower body fat. When compared to machines, free weights improve not only strength but muscle function as well. Lifting weights can also improve self-confidence and make people feel better about themselves. Weightlifting as a sport The goal of weightlifting competitions is usually the lifting of weights themselves, with the winner being determined by the amount of weight lifted, provided that they employ the correct movements in achieving t ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Olympic Weightlifting
Olympic weightlifting, or Olympic-style weightlifting (officially named Weightlifting), is a sport in which athletes compete in lifting a barbell loaded with weight plates from the ground to overhead, with each athlete trying to successfully lift the heaviest weights. Athletes compete in two specific ways of lifting the barbell overhead: these are the snatch and the clean and jerk. The ''snatch'' is a wide-grip lift, in which the weighted barbell is lifted overhead in one motion. The ''clean and jerk'' is a combination lift, in which the weight is first taken from the ground to the front of the shoulders (the clean), and then from the shoulders to overhead (the jerk). The clean and press, wherein a clean was followed by an overhead press, was formerly also a competition lift, but was discontinued due to difficulties in judging proper form. Each weightlifter gets three attempts at both the snatch and the clean and jerk, with the snatch attempts being done first. An athlete's sco ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Powerlifting
Powerlifting is a strength sport that consists of three attempts at maximal weight on three lifts: squat, bench press, and deadlift. As in the sport of Olympic weightlifting, it involves the athlete attempting a maximal weight single-lift effort of a barbell loaded with weight plates. Powerlifting evolved from a sport known as "odd lifts", which followed the same three-attempt format but used a wider variety of events, akin to strongman competition. Eventually odd lifts became standardized to the current three. In competition, lifts may be performed equipped or un-equipped (typically referred to as 'classic' or 'raw' lifting in the IPF specifically). Equipment in this context refers to a supportive bench shirt or squat/deadlift suit or briefs. In some federations, knee wraps are permitted in the equipped but not un-equipped division; in others, they may be used in both equipped and un-equipped lifting. Weight belts, knee sleeves, wrist wraps, and special footwear may also be u ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Racewalking
Racewalking, or race walking, is a long-distance discipline within the sport of athletics. Although a foot race, it is different from running in that one foot must appear to be in contact with the ground at all times. Referee, Race judges carefully assess that this is maintained throughout the race. Typically held on either roads or running tracks, common distances range from up to 100 kilometres race walk, 100 kilometres (62.1 mi). There are two racewalking distances contested at the Summer Olympics: the 20 kilometres race walk (men and women) and 50 kilometres race walk (men only). Both are held as road events. The biennial World Athletics Championships also featured these two events, in addition to a 50 km walk for women, until 2019 World Athletics Championships, 2019. The 50km race walk was replaced by the 35 kilometres race walk as standard championship discipline in 2022 World Athletics Championships, 2022. The IAAF World Race Walking Cup, first held in 1961, is a ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Shoplifting
Shoplifting is the theft of goods from an open retail establishment, typically by concealing a store item on one's person, in pockets, under clothes or in a bag, and leaving the store without paying. With clothing, shoplifters may put on items from the store and leave the store wearing the clothes. The terms ''shoplifting'' and ''shoplifter'' are not usually defined in law. The crime of shoplifting generally falls under the legal classification of larceny. Shoplifting is distinct from burglary (theft by breaking into a closed store), robbery (stealing by threatening or engaging in violent behavior), or armed robbery (stealing by using a weapon). In the retail industry, the word '' shrinkage'' (or ''shrink'') can be used to refer to merchandise lost by shoplifting, but the word also includes loss by other means, such as waste, uninsured damage to products and theft by store employees. Shoplifters range from amateurs acting on impulse, to career criminals who habitually engage ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Facelift
A facelift, technically known as a rhytidectomy (from the Ancient Greek () "wrinkle", and () "excision", the surgical removal of wrinkles), is a type of cosmetic surgery procedure used to give a more youthful facial appearance. There are multiple surgical techniques and exercise routines. Surgery usually involves the removal of excess facial skin, with or without the tightening of underlying tissues, and the redraping of the skin on the patient's face and neck. Exercise routines tone underlying facial muscles without surgery. Surgical facelifts are effectively combined with eyelid surgery (blepharoplasty) and other facial procedures and are typically performed under general anesthesia or deep twilight sleep. According to the most recent American Society for Aesthetic Plastic Surgery facelifts were the third most popular aesthetic surgery in 2019, surpassed only by rhinoplasty and blepharoplasty. History Cutaneous period (1900–1970) In the first 70 years of the 20th centur ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Lift (mathematics)
In category theory, a branch of mathematics, given a morphism ''f'': ''X'' → ''Y'' and a morphism ''g'': ''Z'' → ''Y'', a lift or lifting of ''f'' to ''Z'' is a morphism ''h'': ''X'' → ''Z'' such that . We say that ''f'' factors through ''h''. A basic example in topology is lifting a path in one topological space to a path in a covering space. For example, consider mapping opposite points on a sphere to the same point, a continuous map from the sphere covering the projective plane. A path in the projective plane is a continuous map from the unit interval ,1 We can lift such a path to the sphere by choosing one of the two sphere points mapping to the first point on the path, then maintain continuity. In this case, each of the two starting points forces a unique path on the sphere, the lift of the path in the projective plane. Thus in the category of topological spaces with continuous maps as morphisms, we have :\begin f\colon\, & ,1\to \mathbb^2 &&\ \text \\ g\colon\, &S^2 ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Lifting Theory
In mathematics, lifting theory was first introduced by John von Neumann in a pioneering paper from 1931, in which he answered a question raised by Alfréd Haar. The theory was further developed by Dorothy Maharam (1958) and by Alexandra Ionescu Tulcea and Cassius Ionescu Tulcea (1961). Lifting theory was motivated to a large extent by its striking applications. Its development up to 1969 was described in a monograph of the Ionescu Tulceas. Lifting theory continued to develop since then, yielding new results and applications. Definitions A lifting on a measure space (X, \Sigma, \mu) is a linear and multiplicative operator : T\colon L^\infty(X,\Sigma,\mu)\to \mathcal L^\infty(X,\Sigma,\mu) which is a right inverse of the quotient map : \begin\mathcal L^\infty(X,\Sigma,\mu)\to L^\infty(X,\Sigma,\mu) \\ f\mapsto end where \mathcal L^\infty(X,\Sigma,\mu) is the seminormed Lp space of measurable functions and L^\infty(X,\Sigma,\mu) is its usual normed quotient. In other words ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Lifting Scheme
The lifting scheme is a technique for both designing wavelets and performing the discrete wavelet transform (DWT). In an implementation, it is often worthwhile to merge these steps and design the wavelet filters ''while'' performing the wavelet transform. This is then called the second-generation wavelet transform. The technique was introduced by Wim Sweldens. The lifting scheme factorizes any discrete wavelet transform with finite filters into a series of elementary convolution operators, so-called lifting steps, which reduces the number of arithmetic operations by nearly a factor two. Treatment of signal boundaries is also simplified. The discrete wavelet transform applies several filters separately to the same signal. In contrast to that, for the lifting scheme, the signal is divided like a zipper. Then a series of convolution–accumulate operations across the divided signals is applied. Basics The simplest version of a forward wavelet transform expressed in the lifting sc ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Lambda Lifting
Lambda lifting is a meta-process that restructures a computer program so that functions are defined independently of each other in a global scope. An individual "lift" transforms a local function into a global function. It is a two step process, consisting of; * Eliminating free variables in the function by adding parameters. * Moving functions from a restricted scope to broader or global scope. The term "lambda lifting" was first introduced by Thomas Johnsson around 1982 and was historically considered as a mechanism for implementing functional programming languages. It is used in conjunction with other techniques in some modern compilers. Lambda lifting is not the same as closure conversion. It requires all call sites to be adjusted (adding extra arguments to calls) and does not introduce a closure for the lifted lambda expression. In contrast, closure conversion does not require call sites to be adjusted but does introduce a closure for the lambda expression mapping free va ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
_not_in_contact_with_the_ground.jpg "Click for more on -> Racewalking")
_lower_incision.png "Click for more on -> Facelift")
