An electrical experiment

The surface electrical properties experiment

Gene Simmons, 1 David 14. StrangvJay, 2 L. Bannister,3 D. Cubley/+ G. LaTorraca,l J. D. Redman, 5 J. Rossiter, 6 and R. 14atts6 Abstract The surface electrical properties experiment is presently planned for Apollo 17. It uses two orthogonal, electric dipole antennas laid on the surface, each 70 m long (tip-to-tip), to transmit frequencies of l, 2.1, 4, 8. l, 16 and 32. 1 mhz. The signa 1 s ure ...

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

An experiment in automatic modeling an electrical drive system using fuzzy logic

Electrical drives are usually modeled using circuit theory with currents or linking fluxes chosen as state variables for the electrical part, and rotor speed or position for the mechanical part of the system. Often, the internal structure of the drive system contains nonlinear relations difficult to mode as for example dead-time, hysteresis, and saturation effects. On the contrary, if the avail...

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...