An electrostatical experiment

An Introduction to Natural Experiment Studies

در دو سخن سردبیری شماره‌های قبل به مطالعات مداخله‌ای (Interventional and/or experimental studies) [1] و مطالعات نیمه تجربی (studies Quasi-experiment) [2] پرداختیم. همان جا، به این نکته اشاره کردیم که برای اندازه‌گیری کارآیی یک دارو، واکسن، برنامه بهداشت عمومی و متغیرهای دیگری از این دست، مطالعات مداخله‌ای بهترین گزینه هستند. تقسیم تصادفی و کورسازی از مؤلفه‌های اساسی یک مطالعه مداخله‌ای است [1]....

Animal Rights Consideration is a Necessity in Conducting an Experiment

Investigation on Electrostatical Breakup of Bio-Oil Droplets

In electrostatic atomization, the input electrical energy causes breaking up of the droplet surface by utilizing a mutual repulsion of net charges accumulating on that surface. In this work a number of key parameters controlling the bio-oil droplet breakup process are identified and these correlations among the droplet size distribution, specific charges of droplets and externally applied elect...

Teaching 4th Graders Concepts Related to Sustainable Development: An Experiment

In order to show that some of the shortcomings of current 4th grade curriculum in meeting contemporary needs of the society, especially in regard to sustainable development, can be met via teaching, a short course consisting of deliberations on key concepts in sustainable development was designed and carried out on a sample of 58 students of both genders. The pre- and post-test comparisons reve...

Hiawatha Designs an Experiment

Hiawatha, who at college, Majored in applied statistics Consequently felt entitled To instruct his fellow men on Any subject whatsoever, Waxed exceedingly indignant Talked about the law of error, Talked about truncated normals Talked of loss of information, Talked about his lack of bias Pointed out that in the long run Independent observations Even though they missed the target Had an average p...