The following describes experimental methods for characterizing ice hockey pucks and sticks at game-like speeds. Pucks were characterized according to their coefficient of restitution (COR) and dynamic stiffness (DS) for different brands, speeds, and temperatures. The COR provided a measure of the puck’s elasticity, while the DS provided a measure of puck hardness. At room temperature, puck COR...

This paper focuses on periodic motions and chaos relative to the impacting chatter and stick in order to find the origin of noise and vibration in such a gear transmission system. Such periodic motions are predicted analytically through mapping structures, and the corresponding local stability and bifurcation analysis are carried out. The grazing and stick conditions presented in [Luo & O’Conno...

Figure 1: Bayesian Mixture Model For a Bayesian Mixture Model as shown in figure 1, as k →∞, we shall have G = ∑∞ c=1 πcδφc , where all the φc are i.i.d. samples from G0, while the random sequence {πc}c=1 sum up to one, shall be constructed by the “Stick Breaking” process [3]. Suppose there is a stick with length 1. Let βc ∼ Beta(1, α) for c = 1, 2, 3, . . . , and regard them as fractions we ta...

This paper details the online-identification-based adaptive design of a stick/slip minimization algorithm and top-drive servo control for Rotary Steerable System (RSS) directional drilling tools. Stick/slip in this context refers to the downhole angular velocity variation of the bit about a nominal value. The basic pole placement controller designs are SISO linear but recursively evaluated base...

We study Kauffman’s model of folded ribbon knots: knots made of a thin strip of paper folded flat in the plane. The ribbonlength is the length to width ratio of such a ribbon, and it turns out that the way the ribbon is folded influences the ribbonlength. We give an upper bound of n cot(π/n) for the ribbonlength of n-stick unknots. We prove that the minimum ribbonlength for a 3-stick unknot wit...

This paper reviews literature on mouth sticks and presents information from a survey of occupational therapists specializing in the treatment of persons with spinal cord injuries. The review discusses the standards of mouth-stick design that have been established by dentists, but the survey suggests that occupational therapy practice is widely discrepant from these standards. The author suggest...

Two urine dip-stick assays for glucose were studied and compared to a quantitative hexokinase procedure. We determined sensitivity, specificity, predictive value of "normal" and "abnormal" dip stick results, assay efficiency, technologist precision, and method association. Precision was poor. Attempts to estimate urine glucose concentration with the dip sticks frequently produced gross inaccura...

Glucose monitoring helps diabetic patients manage their blood glucose levels. Diabetics who carefully control their blood glucose levels can signi cantly reduce the number of long-term complications in diabetes [3]. Presently, diabetics estimate their blood glucose level by obtaining a small amount of blood with a nger stick, followed by external analysis of this blood sample for glucose conten...

29 30 It is not known how egocentric visual information (location of a target relative to the self) and 31 allocentric visual information (location of a target relative to external landmarks) are integrated 32 to form reach plans. Based on behavioural data from rodents and humans we hypothesized that 33 the degree of stability in visual landmarks would influence the relative weighting. Furtherm...

Effective vision for action and effective management of concurrent spatial relations underlie skillful manipulation of objects, including hand tools, in humans. Children's performance in object insertion tasks (fitting tasks) provides one index of the striking changes in the development of vision for action in early life. Fitting tasks also tap children's ability to work with more than one feat...