experiment may have half a callus undergo a treatment as the experimental group, while the other half undergoes a similar but non-active treatment as the control group.
Plant cell calluses may be made to differentiate into the specialized tissues of a whole plant, with the addition of a number of hormones or enzymes. This is an ability known as totipotency.
A callus is often the target of a gen
2. LITERATURE REVIEW
Divided Attention
The ability to successfully execute more than one action at a time, while paying attention to two or more channels of modalities.
When people perform a number of tasks in parallel, they must divide their attention, which may weaken performance.
determine the gas-solid heat transfer efficiency.
By using the metallic foam, journal explains the schematic diagram of the test.
In this work, heat transfer experiments were run with each foam sample under eight different flow superficial velocities.
“Heat transfer between the foam structures and the fluid was described by a dynamic, heterogeneous two-phase one-dimensional(1D) model.”
순수실험디자인(설계)과 유사실험디자인(설계)에 대해 논하시오
Ⅰ 서론
Ⅱ 본론
1. 순수실험디자인(Pure or True Experimental Design)
1) 순수실험디자인의 개념
순수실험디자인은 실험적 요소를 모두 갖춘 상태의 디자인을 말하는데 엄격한 외생변수의 통제 하에서 독립변수를 조작함으로써 인과관계를
투입이 이루어지는 집단
CG : 통제집단(Control Group)
실험집단에 대응되는 집단,
처리방법이 가해지지 않는 집단,
1.원시실험설계 (pre-experimental design)
실험변수 조작의 어려움
실험적 통제가 거의 불가능
인과관계를 규명하는데 부적절
가설의 검증보다는 문제의 도출을 위하여
탐색조사의 성격