BACKGROUND To determine the influence of lifting speed and type on peak and cumulative back compressive force (BCF) and shoulder moment (SM) loads during symmetric lifting. Another aim of the study was to compare static and dynamic lifting models. METHODS Ten male participants performed a floor-to-shoulder, floor-to-waist, and waist-to-shoulder lift at three different speeds [slow (0.34 m/s),...

Falls are a leading cause of occupational injuries and fatalities. A substantial proportion of occupational falls results from loss of postural stability. Load lifting perturbs postural stability, and thus is often associated with an increased incidence of falls. Although aged people are at higher fall risks, few studies have examined age effects on postural stability during lifting. Therefore,...

Many behavioural equivalences or preorders for probabilistic processes involve a lifting operation that turns a relation on states into a relation on distributions of states. We show that several existing proposals for lifting relations can be reconciled to be different presentations of essentially the same lifting operation. More interestingly, this lifting operation nicely corresponds to the ...

We consider a generalization of lifting modules relative to a class A of modules and a proper class E of short exact sequences of modules. These modules will be called E-A-lifting. We establish characterizations of modules with the property that every direct sum of copies of them is E-A-lifting. 2000 Mathematics Subject Classification: 16S90, 16D80.

In this work, we have introduced a systematic design of the integerto-integer invertible quaternionic multiplier based on a generalized block-lifting structure using two alternative techniques: CORDIC architectures and distributed arithmetic (DA) as a block of M -band linear phase paraunitary filter banks LP Q-PUFB for the lossless-tolossy (L2L) image coding. The low latency separable image pro...

We present a technique to compress scalar functions defined on 2-manifolds of arbitrary topology. Our approach combines discrete wavelet transforms with zerotree compression, building on ideas from three previous developments: the lifting scheme, spherical wavelets, and embedded zerotree coding methods. Applications lie in the efficient storage and rapid transmission of complex data sets. Typic...

The asymptotic behavior of linear periodic discrete-time H∞ a posteriori filters is discussed in this paper. We extend existing results for time-invariant H∞ filters to Editor: (1) Please provide dates. (2) We left ‘a posteriori’ as italic. OK? study the problems arising from periodic discrete-time systems. Based on quasi-lifting techniques, a sufficient condition for ensuring feasibility and c...

4 In this paper, we study 0−1 mixed-integer bilinear covering sets. We derive several families of facet5 defining inequalities via sequence-independent lifting techniques. We then show that these sets have 6 polyhedral structures that are similar to those of certain fixed-charge single-node flow sets. As a result, we 7 obtain new facet-defining inequalities for these sets that generalize well-k...

The lifting scheme (LS) based wavelet transform [1] is the decorrelation stage employed in JPEG2000 [2], where the 9/7 and the 5/3 wavelet filters are used for lossy and lossless compression respectively. It is known that the 5/3 wavelet filters can be implemented with a simple multiplierless two steps LS, whereas the 9/7 wavelet filters require non rational multiplications with four lifting st...