Results 21 to 30 of about 980,901 (302)
On a family of pseudohyperbolic disks [PDF]
Hyperbolic geometry plays an important role within function theory of the disk. For example, via the Schwarz-Pick Lemma, the isometries of the unit disk $\mathbb D$ with respect to this geometry are the conformal self-maps of $\mathbb D$.
Mortini, Raymond, Rupp, Rudolf
core +2 more sources
Consideration of the Variable Contact Geometry in Vibratory Roller Compaction
Vibratory rollers are mainly used for the near-surface compaction of granular media for a wide variety of construction tasks. In addition to the pronounced depth effect, vibratory rollers have offered the possibility of work-integrated compaction control
Johannes Pistrol +3 more
doaj +1 more source
Variable Geometry Pipe Diffusers [PDF]
Theoretical analyses and experimental results are reported for two unique variable geometry techniques used with pipe diffusers to enhance off-design performance. One technique mechanically closes the diffuser throat in an unusual manner. The other allows flow recirculation to close the throat artificially while attempting to improve diffuser inlet ...
openaire +1 more source
Variable Geometry in Miniature Gas Turbine for Improved Performance and Reduced Environmental Impact
A miniature gas turbine (MGT) is proposed as a promising future energy source. Increasingly stringent requirements related to harmful combustible gas emissions and a trend towards improved energy generation efficiency drive the quest for new MGT ...
Szymon Fulara +2 more
doaj +1 more source
The product of discrete sources and strands, the protection of fundamental rights in Europe has now begun to knit together. The difficulties spring less from widely varying views of what fundamental rights ought to be than from their being played out ...
Robert Lane
doaj +1 more source
Attitude stability and altitude control of a variable-geometry Earth-orbiting solar sail [PDF]
A variable-geometry solar sail for on-orbit altitude control is investigated. It is shown that, by adjusting the effective area of the sail at favorable times, it is possible to influence the length of the semi-major axis over an extended period of time.
Ceriotti, Matteo +2 more
core +1 more source
To meet the increasingly stringent performance indicators of gas turbines, the turbine inlet temperature has increased, and variable geometry turbine technology is widely applied.
Liping Deng +3 more
doaj +1 more source
The Variable Geometry Approach to International [PDF]
Negotiations among nations on policies to promote international economic integration have widened in recent years to cover new issues; for example, foreign direct investment rules, policies to promote competition, the international movement of labor, the
doaj +1 more source
Vacuum Solutions of Classical Gravity on Cyclic Groups from Noncommutative Geometry [PDF]
Based on the observation that the moduli of a link variable on a cyclic group modify Connes' distance on this group, we construct several action functionals for this link variable within the framework of noncommutative geometry.
Dai, Jian, Song, Xing-Chang
core +6 more sources
Gas turbines are complex mechatronic systems that require reliable dynamic models to support automated operation under varying aerodynamic conditions.
Jinshi Du +3 more
doaj +1 more source

