Fixed Point Observation
Fixed Point Observation - Related Videos
04:51
Observational Research
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2023
Source: Laboratories of Gary Lewandowski, Dave Strohmetz, and Natalie Ciarocco—Monmouth University If you want to know how someone thinks or feels, you can ask that person questions. Another approach is to observe how the person is acting or look for indicators of how they acted in the past. While observations may seem revealing, it isn’t always easy to know if they are truly accurate. For instance, you may see a person smiling and assume they are happy, when in reality they are annoyed and...
16:31
Fixed Volume or Fixed Pressure: A Murine Model of Hemorrhagic Shock
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Cited by 24 •
2011
The Hemorrhagic Shock model has been a reliable and reproducible resource facilitating the identification and understanding of signaling cascades associated with inflammation and end-organ damage after trauma. This article provides a step-by-step description of surgical and mechanical aspects associated with the Hemorrhagic Shock experimental procedure in mice.
05:35
Lung Instillation and Fixation: Introducing Liquid into the Trachea and Fixing Lungs to Measure the Fixed Lung Volume
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2023
This video describes a simple and reliable method of introducing liquid into the trachea for lung instillation, fixation, and lung volume measurement.
02:30
Naturalistic Observations
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2020
If you want to understand how behavior occurs, one of the best ways to gain information is to simply observe the behavior in its natural context. However, people might change their behavior in unexpected ways if they know they are being observed. How do researchers obtain accurate information when people tend to hide their natural behavior? As an example, imagine that your professor asks everyone in your class to raise their hand if they always wash their hands after using the restroom. Chances...
02:04
Fixing Double-strand Breaks
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2020
The double-stranded structure of DNA has two major advantages. First, it serves as a safe repository of genetic information where one strand serves as the back-up in case the other strand is damaged. Second, the double-helical structure can be wrapped around proteins called histones to form nucleosomes, which can then be tightly wound to form chromosomes. This way, DNA chains up to 2 inches long can be contained within microscopic structures in a cell. A double-stranded break not only damages...
FAQs
A stable reference point provides the comparison basis for successive readings, while consistent measurement conditions reduce differences caused by the observation process itself. Engineers can therefore distinguish an apparent change from a change in the monitored system. Without accurate reference control and repeatability, estimates of displacement, deformation, or settlement may be difficult to compare reliably against the baseline.
Comparison with baseline readings can reveal displacement, deformation, settlement, vibration, and other changes in a monitored system, structure, or environmental condition. The value lies in tracking how measurements differ over time rather than relying on one isolated reading. This time-based evidence supports condition assessment and can help identify changes that may require closer engineering attention.
Defined observation intervals create an organized record of change and make successive measurements easier to compare. The interval should be established as part of the monitoring approach, because irregular or undocumented timing can weaken interpretation of trends. In engineering practice, consistent scheduling supports deformation monitoring, construction control, maintenance planning, and detection of potentially significant system changes.
A typical workflow establishes a designated, stable observation point and an appropriate reference baseline, then records measurements with a surveying instrument, sensor, or other device. Engineers repeat the observations using consistent procedures and defined intervals, compare new readings with earlier values, and assess the resulting changes. Accurate control and procedural consistency are central throughout the workflow.
Surveying instruments, sensors, and other measurement devices can support this monitoring approach. The equipment is selected according to the system, structure, or environmental condition being observed and the type of change being assessed. Regardless of the device, useful results depend on maintaining the designated reference location, applying repeatable measurement procedures, and preserving comparable observation conditions.
Applications span civil, structural, geotechnical, and industrial engineering. Engineers use the approach for construction control, condition assessment, deformation monitoring, maintenance planning, and early detection of potentially significant changes. Its broader value is that repeated, comparable measurements provide evidence for evaluating how a structure, system, or environmental condition changes relative to an established baseline.