A multi-workstation for use in a work area of a garage having a vertically oriented pole with an upper end and a lower end and a light fixture mounted between the upper end and the lower end of the vertically oriented pole. The light fixture is capable of sliding up and down along the pole, rotating about an axis that is perpendicular to the axis of the pole, moving horizontally toward and away from the pole, and rotating about an axis that is perpendicular to the axis of the pole. Locking means is provided to lock the light fixture at a desired height and angle relative to the pole and mounting means is provided to hold the pole in a vertical position.

In this paper,we calculate the B→J/ψ helicity form factors（HFFs） up to twist-4 accuracy by using the light-cone sum rules（LCSR） approach.After extrapolating those HFFs to the physically allowable q~2 region,we investigate the B-meson two-body decays and semi-leptonic decays B→J/ψ（P,V,lv）,where P/V stand for light pseudo scalar and vector mesons,respectively.The branching fractions can be derived using the CKM matrix element and the B lifetime from the Particle Data Group,and we obtain B（BJ/ψπ）=(0.136)%,B（B→J/ψK）=(0.010)%,B（B→J/ψρ）=(0.768)%,B(B→J/ψK)=(0.043)%,B（B→J/ψμv）=(2.802)%and B（B→J/ψτv）=(0.559)%.We then obtain R/μv=0.048 and R/π=0.075,which agree with the LHCb measured value within 1σ-error.We also obtain R=0.199,which like other theoretical predictions,is consistent with the LHCb measured value within 2σ-error.These imply that the HFFs under the LC SR approach are also applicable to the B meson two-body decays and semi-leptonic decays B→J/ψ+（P,V,lv）,and the HFFs obtained using LCSR in a new way implies that there may be new physics in the B→J/ψlv semi-leptonic decays.

Let p(1),..., p(n) be positive real numbers. It is well known that for every r < 0 the matrix [(p(i) + p(j))(r)] is positive definite. Our main theorem gives a count of the number of positive and negative eigenvalues of this matrix when r > 0. Connections with some other matrices that arise in Loewner's theory of operator monotone functions and in the theory of spline interpolation are discussed.