1 Operational Definitions of Variables Dictionaries provide us with conceptual definitions of variables. For example, in research on speech communication, we might be interested in students‟ ability to recite, which is defined in one dictionary as “to repeat or speak aloud from or as from memor...
All procedures were approved by The College of Wooster’s Human Subjects Research Committee. All methods were performed in accordance with the United States Health and Human Services Policy for Protection of Human Research Subjects. After providing informed consent, participants were presented with a co...
/ European Journal of Operational Research 146 (2003) 302–314 Table 4 Impact of planning variables Planning variables On-time (%) Developed a business ... VA Mabert,A Soni,MA Venkataramanan - 《European Journal of Operational Research》 被引量: 718发表: 2003年 Flowshop scheduling research af...
On-task and off-task behaviours have been used in educational research either as independent topics of interest or as dependent variables. In clinical research, there is general agreement about what constitutes off-task behaviours but no such agreement exists for on-task behaviours. This paper ...
On-task and off-task behaviours have been used in educational research either as independent topics of interest or as dependent variables. In clinical research, there is general agreement about what constitutes off-task behaviours but no such agreement exists for on-task behaviours. This paper revie...
Statistical Analysis The foregoing examples are obviously very important ones, but they are rather too complex to illustrate methods of operational research. For this purpose a different approach is necessary. In most problems, there are a number of variables to be considered. Our first object is ...
The Pediatric Risk of Mortality (PRISM) score was developed from the Physiologic Stability Index (PSI) to reduce the number of physiologic variables requir... Pollack,Murray,M,... - 《Critical Care Medicine》 被引量: 1832发表: 1987年 Making Strategy: The Journey of Strategic Management Includes...
A Pitts,I Stark - 《Higher Order Operational Techniques in Semantics》 被引量: 451发表: 1997年 Relationships between selective cognitive variables and student's ability to solve chemical problems performance on conceptual and algorithmic problems; and to investigate interactions among learning orientation...
such as "gratitude." Operational independent variables are different in that they arise from issues of research design. For example, it may not be possible or efficient to measure something abstract like "gratitude." In such a situation, issues of convenience and practicality give rise to an op...
aThe unstructured model developed here may serve as a valuable tool for not only understanding the effects of a variety of operational variables on system dynamics but also for utilizing it for research and educational activities in modeling, monitoring, optimization and control. 这里被开发的无特定...