Path-addition is an operation that takes a graph and adds an internally vertex-disjoint path between two vertices together with a set of supplementary edges. Path-additions are just the opposite of taking minors. We show that some classes of graphs are closed under path-addition, including non-planar, right angle crossing, fan-crossing free, quasi-planar, (aligned) bar 1-visibility, and interva...

This paper investigates the aerodynamic characters of a model ducted fan system, analyses the basic principle of the effect of thrust promotion and torque reduction, discovers the relationship between the revolutions per minute(RPM) of the fan and the characters of thrust, as well as system torque. Firstly a model ducted fan has been designed and manufactured according to the specific structure...

Any non-affine one-to-one binary gate can be wired together with suitable inputs to give AN D, OR, N OT and fan-out gates, and so suffices to construct a general-purpose computer.

Three studies demonstrated that collective identity and identity threat shape representations of the physical world. In Study 1, New York Yankees fans estimated Fenway Park, the stadium of a threatening out-group (but not Camden Yards, the stadium of a neutral out-group) to be closer than did non-Yankees fans. In Study 2, the authors manipulated identity threat among people affiliated (or not) ...

In this paper we suggest a modification of classical Lupanov’s method [8] that allows building circuits over the basis {&,∨,¬} for Boolean functions of n variables with size at most 2n n ( 1 + 3 log n+O(1) n ) , and with more uniform distribution of outgoing arcs by circuit gates. For almost all Boolean functions of n variables in the circuits for these functions, which are built using our meth...

Corporate sponsorships are vital to the success of minor league sport businesses. As competition for sponsorships intensifies in these venues, there is a need for minor league sports to demonstrate a return on the sponsorship investment based on fan purchase intentions and behaviors. Prior research has identified fan involvement, goodwill, and sponsor attitudes as key predictors of fan purchase...

The starting points of this paper are two size-optimal solutions: (i) one for implementing arbitrary Boolean functions (Horne, 1994); and (ii) another one for implementing a particular sub-class of Boolean functions (Red’kin, 1970). Because VLSI implementations do not cope well with highly interconnected nets—the area of a chip grows with the cube of the fan-in (Hammerstrom, 1988)—this paper wi...

Continuously monitoring the operation of each individual fan can significantly improve the measurement quality of aerial pollutant emissions from animal buildings that have a large number of fans. To monitor the fan operation by detecting the fan vibration is a relatively new technique. A low-cost electronic vibration sensor was developed and commercialized. However, its large scale application...

Major ions and selected environmental tracers (D, 18O, 3H and chlorofluorocarbons (CFCs)) were employed to determine the source, flow rates, and hydrochemical evolution of groundwater in an alluvial fan along the front of the Qilian Mountains, which serves as an important groundwater reservoir in northwest China. Temporal and spatial variations in ion concentrations were limited near the upper ...