scholarly journals On the (Im-)Possibility of Extending Coin Toss

2006 ◽  
pp. 504-521 ◽  
Author(s):  
Dennis Hofheinz ◽  
Jörn Müller-Quade ◽  
Dominique Unruh
Keyword(s):  
Coin Toss

The effect of mask use on maternal oxygen saturation in term pregnancies during the COVID-19 process

2020 ◽  
Vol 0 (0) ◽  
Author(s):  
Erzat Toprak ◽  
Ayça Nazlı Bulut
Keyword(s):  
Oxygen Saturation ◽  
Pregnant Women ◽  
Stress Test ◽  
Statistical Significance ◽  
Categorical Variables ◽  
Fisher Exact Test ◽  
Coin Toss ◽  
Arterial Blood ◽  
Surgical Masks ◽  
Before And After

AbstractObjectivesOur aim was to evaluate the effect of standard surgical and N-95 respiratory mask use on maternal oxygen saturation, vital signs and result on non-stress tests in term pregnancies.MethodsIt is a prospective observational study. The study included healthy, not in labor, singleton pregnant women of 370/7–410/7 weeks who were applied to our hospital for routine obstetric control examination between March 1, 2020, and August 31, 2020. Patients were randomised by coin toss method. Oxygen saturation, systolic, and diastolic arterial blood pressure, pulse, respiratory rate, and temperature of pregnant women using surgical masks and respiratory masks were measured before and after the non-stress test. The tolerance of the masks was also evaluated. Student’s t-test was used for variables showing parametric distribution and the Mann Whitney U-test was used for non-parametric tests. The categorical variables between the groups was analyzed by using the Chi square test or Fisher Exact test. The statistical significance level was taken as p<0.05 in all tests.ResultsA total of 297 pregnant women using masks were included in the study. The effect of mask type on oxygen saturation before and after the non-stress test was found to be significant (97.1±1.8 corresponds to 95.3±2.6 for the surgical mask, p=0.0001; 97.8±1.7 corresponds to 93.7±2.0 for the respiratory mask, p=0.0001). Mask tolerance of patients using respiratory masks was significantly higher than those using surgical masks (mean 8, 1–10, p=0.0001).ConclusionsSurgical mask and respiratory mask usage decreased significantly in oxygen saturation in term pregnancies.

Coin Toss Project

2016 ◽  
pp. 445-460
Author(s):  
Molly K. Maskrey
Keyword(s):  
Coin Toss

scholarly journals Null Models for Formal Contexts

Information ◽  
2020 ◽  
Vol 11 (3) ◽  
pp. 135
Author(s):  
Maximilian Felde ◽  
Tom Hanika ◽  
Gerd Stumme
Keyword(s):  
Formal Concept Analysis ◽  
Null Model ◽  
Null Models ◽  
Formal Concept ◽  
Model Generation ◽  
Coin Toss ◽  
Novel Approach ◽  
Random Models ◽  
Real World Datasets ◽  
Stochastic Properties

Null model generation for formal contexts is an important task in the realm of formal concept analysis. These random models are in particular useful for, but not limited to, comparing the performance of algorithms. Nonetheless, a thorough investigation of how to generate null models for formal contexts is absent. Thus we suggest a novel approach using Dirichlet distributions. We recollect and analyze the classical coin-toss model, recapitulate some of its shortcomings and examine its stochastic properties. Building upon this we propose a model which is capable of generating random formal contexts as well as null models for a given input context. Through an experimental evaluation we show that our approach is a significant improvement with respect to the variety of contexts generated. Furthermore, we demonstrate the applicability of our null models with respect to real world datasets.

Coin Toss

I/O ◽  
2021 ◽  
pp. 72-73
Keyword(s):  
Coin Toss

Optical coin toss

2018 ◽  
Vol 12 (2) ◽  
pp. 58-58
Author(s):  
David F. P. Pile
Keyword(s):  
Coin Toss

Cutting Through the Fog: Financial Literacy and Financial Investment Choices

2020 ◽  
Author(s):  
Marco Nieddu ◽  
Lorenzo Pandolfi
Keyword(s):  
Financial Literacy ◽  
Ambiguity Aversion ◽  
Financial Education ◽  
Certainty Equivalent ◽  
Financial Asset ◽  
Negative Effects ◽  
Coin Toss ◽  
Financial Investment ◽  
Average Value ◽  
The Impact

Abstract This paper examines the impact of financial literacy on the individual propensity to invest in financial assets. In a laboratory experiment with a two-by-two design, we study how the certainty equivalent of a risky lottery changes when varying the lottery framing and the participants’ financial literacy level. We find that presenting the lottery as a financial asset—whose payoffs need to be computed from a given return rate—rather than as a simple coin toss reduces the average value participants assign to the lottery by approximately 20% and lowers their understanding of the lottery’s structure. Enhancing financial literacy by explaining the basic financial concepts involved in the description of the financial-asset lottery, offsets the negative effects of the financial framing: it improves respondents’ understanding of the lottery and increases the certainty equivalent. Our results—which can be rationalized by ambiguity aversion—shed new light on the linkages between financial literacy and financial investment behavior. Additionally, they highlight the importance of promoting financial education to stimulate households’ financial market participation.

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