Rule-of-Thumb Statistics

Nature ◽  
1966 ◽  
Vol 210 (5031) ◽  
pp. 70-71
Author(s):  
S. K. ZAREMBA
Keyword(s):  
Rule Of Thumb

Split the Charge Difference in Two! a Rule of Thumb for Adding Proper Amounts of Ions in MD Simulations

2020 ◽  
Author(s):  
Matías R. Machado ◽  
Sergio Pantano
Keyword(s):  
Molecular Dynamics ◽  
Ionic Strength ◽  
Molecular Simulations ◽  
Md Simulations ◽  
Good Practices ◽  
Rule Of Thumb ◽  
Ionic Concentrations

<p> Despite the relevance of properly setting ionic concentrations in Molecular Dynamics (MD) simulations, methods or practical rules to set ionic strength are scarce and rarely documented. Based on a recently proposed thermodynamics method we provide an accurate rule of thumb to define the electrolytic content in simulation boxes. Extending the use of good practices in setting up MD systems is promptly needed to ensure reproducibility and consistency in molecular simulations.</p>

scholarly journals Rethinking a Designers’ Rule of Thumb: Influence of Information Seeking and Consumption Goals on Mobile Commerce Interface Design

2021 ◽  
Vol 16 (5) ◽  
pp. 1631-1647
Author(s):  
Sooa Hwang ◽  
Hyunah Park ◽  
Kyunghui Oh ◽  
Sangwoong Hwang ◽  
Jaewoo Joo
Keyword(s):  
Information Seeking ◽  
Interface Design ◽  
Field Experiments ◽  
Product Information ◽  
Mobile Commerce ◽  
Rule Of Thumb ◽  
Additional Information ◽  
Dynamic Relationship ◽  
The Usa ◽  
Consumption Goals

We investigated whether adding product information in mobile commerce improved consumers’ attitudes toward a product and whether this relationship was moderated by consumption goals. We conducted two field experiments in which we recruited parents in Korea and the USA and asked them how they evaluated two childcare hybrid products (HPs) newly developed by Samsung Electronics designers. The results revealed that participants exposed to additional information about the HPs evaluated them more favorably than those who were not exposed. However, this relationship disappeared when a consumption goal was activated. Our findings establish a dynamic relationship between information seeking and consumption goals, asking designers to rethink their rule of thumb in the mobile commerce context.

How Well Prepared are Students for Undergraduate Engineering Mathematics?

1995 ◽  
Vol 23 (4) ◽  
pp. 352-362 ◽  
Author(s):  
Duncan A. Lawson
Keyword(s):  
Diagnostic Test ◽  
Mechanical Engineering ◽  
Test Results ◽  
Mathematical Competence ◽  
Rule Of Thumb ◽  
Undergraduate Engineering ◽  
Engineering Mathematics ◽  
Level 3

Many universities admit students to degree courses in mechanical engineering from a wide variety of backgrounds. The majority enter with a study of A level mathematics. An increasing proportion enter having previously studied for BTEC qualifications. The conventional rule of thumb which is used is that BTEC level 3 is equivalent to A level. In this paper this rule of thumb is examined by comparing the performance of A level and BTEC students in a diagnostic test, taken at the start of their course, and the results of the end-of-year examination. The results of students entering the mechanical engineering stream of degree courses at Coventry University in 1991 and 1992 are used to provide the data for this study. The diagnostic test results also show the key areas of weakness in the level of mathematical competence of many students on entry to universities.

Principles Matter

2021 ◽  
Author(s):  
Carlos A. Ball
Keyword(s):  
Federal Government ◽  
Free Speech ◽  
Separation Of Powers ◽  
Democratic Institutions ◽  
Democratic Values ◽  
Short Term ◽  
White House ◽  
Rule Of Thumb ◽  
Constitutional Principle ◽  
Long Run

Progressives who opposed the Trump administration’s policies found themselves repeatedly relying on constitutional principles grounded in federalism, separation of powers, and free speech to resist the federal government. Although many progressives had either criticized or underemphasized those principles before Trump, the principles became vital to progressive causes after Trump was elected. Using dozens of examples from the ways in which Trump abused presidential powers, this book explains how the three sets of principles can help mitigate the harms that autocratic leaders in the Trump mold can inflict on both democratic institutions and vulnerable minorities. In doing so, the book urges progressives to follow this rule of thumb in the post-Trump era: if a constitutional principle was worth deploying to resist Trump’s harmful policies and autocratic governance, then it is likely worth defending in the post-Trump era even if it makes the short-term attainment of progressive objectives more difficult. This type of principled constitutionalism is essential not only because being principled is good in and of itself, but also because being principled in matters related to federalism, separation of powers, and free speech will help both advance progressive causes over the long run and reduce the threats posed by future autocratic leaders in the Trump mold to our system of self-governance, to our democratic values, and to traditionally subordinated minorities. Going forward, progressives should promote and defend constitutional principles grounded in federalism, separation of powers, and free speech regardless of whether they have an ally or an opponent in the White House.

A Review of the PSA Model Truncation Convergence Issues at Some ENS Plants

2006 ◽  
Author(s):  
Fatma Yilmaz
Keyword(s):  
Safety Assessment ◽  
Recent Model ◽  
Probabilistic Safety Assessment ◽  
Rule Of Thumb ◽  
Model Update ◽  
The Subject ◽  
River Bend ◽  
Probabilistic Safety

This study provides the insights gained from the Probabilistic Safety Assessment (PSA) model update of several Entergy Nuclear South (ENS) plants with respect to truncation convergence based on the limited guidance on the issue in the industry. The industry rule of thumb, the ASME and NRC guidance and requirements on the subject have been reviewed. The recent model updates performed at some of the ENS plants (River Bend, ANO 1 and 2) considered these criteria. Based on the current criteria used in the industry for truncation convergence, the recent PSA model update results for the River Bend Station (RBS) and ANO-1 are not converging even at a low truncation limit of 1E−11/reactor-year (yr). Many improvements were introduced in the recent model updates and convergence was expected at higher truncation values. This paper discusses the issues identified that are related to the convergence of the PSA results at low truncation limits.

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