In other words, who can attract and hang onto who, and for how long.
I think about how experiences in relationships and cultural messages “set the price” or worth of people in the relationship market. It contains some brutally honest discussions of things like changes in sexual relationships of teens or what happens to dating/mating dynamics in cities where there are more people of one sex than the other.) (For a particularly fascinating, recent treatment of such issues, I recommend one of my favorite, popular books written by an economist: Steve Harford’s, The Logic of Life. This has been done a lot in the field of economics, with a preeminent example being the work of Gary Becker who has applied economic thinking to family relationships. How could this principle apply to relationships? While it may seem crass, it’s very easy to apply market thinking to relationship dynamics-especially in the mating game but also in ongoing relationships like marriage. The one becomes your reference point, and then you use that reference point to evaluate the other. That higher price is an important part of the strategy because it becomes your comparison so that the price they hope to get you to pay starts looking good to you. It’s also why marketers will try to get you hooked on a higher price than the one they are planning to get you to pay for something. This principle has been confirmed in many ingenious studies. The price can be (and often is) arbitrary, hence the term, but once the price is out there and gets stuck into our heads, we come to expect that price to be THE price, and we value things based on this original, somewhat arbitrary set point. Bravo fellow geekoids.) Arbitrary coherence occurs when we are exposed to a price for something and that price sort of sticks (coheres) in our minds. Both fields study human behavior, often at different levels, but sometimes on the same level-that of the individual.Īt the individual level, economists have found a very intriguing and reliable pattern that they call “arbitrary coherence.” (Like any good scientists, they come up with fancy names for what they study and talk about. What many see as the dismal (social) science is the field of economics. High fidelity powder-scale simulations of deep powder layers were used to further elucidate the underlying physics revealed by SD-OCT measurements and high speed imaging, yielding insight to defect formation mechanisms which can lead to improved process parameters.I see psychology as one of the cheerier social sciences. Large dross occurs in the high energy density regime, while balling and a capillary-driven coalescence of unstable melt pools perpendicular to the scanning direction occurs in the low energy density regime. Laser power significantly affects overhang morphology, as measured by SD-OCT. Spatter particles, which have been correlated with numerous defect modalities, generate high points in the more » powder bed and can persist on a melted surface for many layers. Layer-to-layer scan rotation strategy significantly impacts surface roughness between layers which in turn can influence porosity. Printed cubes, with and without an internal ‘overhang’ channel, were built to investigate the effect of scanning parameters on surface structure. Layers are built up using an open architecture laser powder bed fusion machine while height measurements are made in-line along the process laser path following each layer print. Here, layer-to-layer height measurements of additively manufactured 316L stainless steel using high speed spectral-domain optical coherence tomography (SD-OCT) are presented. For the demonstration of the P-OCT method an experimental setup was created, using which the images of the inner structure of biological objects at the depth up to 1 mm with the axial spatial resolution of 12 μm were obtained.
For the first time a method of linear phase modulation by 2π is proposed for P-OCT systems, which allows the use of compact high-frequency (a few hundred kHz) piezoelectric cell-based modulators. For the resulting more » field of the interfering object and reference waves an analytical expression is derived that allows the calculation of the autocorrelation function in the plane of photodetectors. The absence of mechanical variation of the optical path difference in the interferometer essentially reduces the time required for 2D imaging of the object internal structure, as compared to the classical OCT that uses the time-domain method of the image construction, the sensitivity and the dynamic range being comparable in both approaches. The method of optical coherence tomography with the scheme of parallel reception of the interference signal (P-OCT) is developed on the basis of spatial paralleling of the reference wave by means of a phase diffraction grating producing the appropriate time delay in the Mach–Zehnder interferometer.
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