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134 results on '"Spencer, Robin"'

1. The Building Blocks of Consciousness

Author

Spencer, Robin W.

Subjects
Physics - Physics and Society, Quantitative Biology - Neurons and Cognition
Abstract

Consciousness is presented not as a unified and uniquely human characteristic, but rather as an emergent property of several building blocks, most of which are demonstrably present in other species. Each block has its own rationale under natural selection and could have arisen independently, and the jumps between blocks -- which culminate in consciousness -- are small enough to be evolutionarily plausible. One underappreciated block involves unconscious engram playback and discrimination, and plays a major role in brain storage optimization. This function is present in birds and nearly all mammals and is recognized by its side-effect: dreams., Comment: 13 pages, 1 figure

Published
2024

2. City size distributions are driven by each generation's stay-vs-leave decision

Author

Spencer, Robin W.

Subjects
Physics - Physics and Society
Abstract

Throughout history most young adults have chosen to live where their parents did while a smaller number moved away. This is sufficient, by proof and simulation, to account for the well-known power law distributions of city sizes. The model needs only two parameters, $r$ = the probability that a child stays, and the maximum number of cities (which models the observed saturation at high city rank). The power law exponent follows directly as $\alpha = 1 + 1/r$, with Zipf's Law simply the limiting case as $r \rightarrow 1$. Observed exponents $(\alpha = 2.2 \pm 0.4, n = 158)$ are consistent with stay-or-leave data from large genealogic studies. This model is self-initializing and could have applied from the time of the earliest stable settlements. The driving narrative behind city-size distributions is fundamentally about family ties, familiarity, and risk-avoidance, rather than economic optimization., Comment: 17 pages, 13 figures for associated datasets and software, see http://scaledinnovation.com/gg/cityGrowth.html for related works by the author, see http://scaledinnovation.com/gg/gg.html?nm=reports

Published
2024

32. It's a green light from me!

Author

Spencer, Robin

Subjects
Business, Food and beverage industries, Business, international
Abstract

* Sir: I think a traffic-light system is excellent and helps me identify high-sugar or high-fat products ('Shoppers scared off by hybrid label red lights,' 22 March, ps). The DH [...]

Published
2014

35. I have been reading SUCCESS magazine and enjoying the Bonus

Author

Spencer, Robin

Subjects
Business, general, Business
Abstract

I have been reading SUCCESS magazine and enjoying the Bonus CDs for a couple of years now. The Reinvention issue [August] featuring Brian Tracy on the CD was the best [...]

Published
2010

36. A Potent Nonpeptide Antagonist of the Substance P (NK 1 ) Receptor

Author

Snider, R. Michael, primary, Constantine, Jay W., additional, Lowe, John A., additional, Longo, Kelly P., additional, Lebel, Wesley S., additional, Woody, Heidi A., additional, Drozda, Susan E., additional, Desai, Manoj C., additional, Vinick, Fredric J., additional, Spencer, Robin W., additional, and Hess, Hans-Jürgen, additional

Published
1991
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38. 13C nuclear magnetic resonance and reactivity of 4H-3,1-benzoxazin-4-ones

Author

Robinson, Valerie J. and Spencer, Robin W.

Abstract

Complete carbon-13 nuclear magnetic resonance assignments have been made for 22 4H-3,1-benzoxazin-4-ones. These compounds are alternate substrate inhibitors of human leukocyte elastase, a serine protease involved in tissue degradation. Correlations between the carbon chemical shifts and rates of alkaline hydrolysis are consistent with hydrolysis via attack at C4, and are also useful in the selection of parameters for structure–activity analysis.

Published
1988
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39. Sequential pathophysiological changes characterizing the progression from renal dysfunction to acute renal failure following cardiac operation

Author

Hilberman, Mark, Derby, Geraldine C., Spencer, Robin J., and Stinson, Edward B.

Abstract

Sequential pathophysiological data were analyzed from 14 patients who exhibited similar severe depression of cardiac and renal function within 24 hours of cardiac operation. Seven patients exhibited postoperative renal dysfunction (defined by a minimum postoperative clearance of inulin [Cin] between 20 ml/min/1.73 m2and one-half normal) and seven progressed from renal dysfunction to acute renal failure (ARF) (Cin≤ 15 ml/min/1.73 m2). In ARF patients depression of cardiac function was profound and persistent from postoperative days 1 to 7. Urine flow remained greater than 1 ml/min, and serum creatinine rose progressively. The Cindeclined progressively during the first postoperative week. The ratio of urinary to plasma osmolality fell, and the fractional excretion of sodium (FENa) and potassium (FEK) increased substantially. By contrast, in renal dysfunction patients definite hemodynamic improvement occurred and renal function remained stable. Increased FENain renal dysfunction was associated with hemodynamic improvement, weight loss, and stable fractional potassium excretion. These data provide unique documentation of the indices of hemodynamic and renal function associated with the progression to postoperative ARF. The central role of sustained profound depression of cardiac function in this progression appears to be the primary factor in the lethality of postoperative ARF.

Published
1980
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