Archive for January 9th, 2012
Gracie Burrell
Monday, January 9th, 2012
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Use Of Louvers In Architectural Sun Control
Monday, January 9th, 2012Building and construction owners receive environmental advantages by buying louvers. You can find these appliances in different materials and several multiple blade sizes. This process will ensure that you save money used in climatic control and also electricity bills. When going for architectural sun control systems, there is need to check maintenance needs, placements and appearance.
System
These exterior sun control exterior sun louvers systems ensure that sunlight is regulated in both gaining and losing of solar heat. Depending on the season, these systems regulate the sunlight. For this reason, the construction site does not need more energy and electricity. In the end, it results in massive cost savings.
Winter Season
During the winter or cold season, these louvers open so that heat and sunlight is allowed to enter the building. This results to reducing the cost of heating. In the summer season, the louvers close to ensure that excess heat is blocked from the building. The moment window glazing is incorporated,you can be assured to gain even more cost savings.
Installation
In addition, the placement of louvers really matters. This therefore means that the technician should place them where the owner will get maximum benefits. For instance, the product should not be installed in the Northern part of your building because you will not benefit fully from it. It should be installed in either the eastern, southern or western part of the building. This will ensure that you get substantial energy benefits.
Auto Louvers
You can automate a louver. This will allow the system to change the blades’ angles depending on the sun’s position. This means that the energy requirements of the building dictate the level of exposure or shading. Maintenance is another important aspect with louvers.
Upkeep
The materials used on this system will dictate its maintenance. An example of this is that when a louver is made using wood, it will need frequent cleaning and maintenance. When you acquire louvers made of synthetic materials, it will not require as much maintenance. Some of the materials that require practically no maintenance include aluminum and copper.
Appearance
The inner and outer regions of the building will be influenced by these louver systems. Instead of buying expensive electrical devices for updates, you should purchase louvers that will assist you in regulating the light inside and also minimize glare. The person living inside the house will be assured of safety and productivity by installing these louvers. You should also consider the improvement they provide to the building’s exterior appearance.
Variety
The materials also give varied appearances. For instance, a wooden material displays a warm, organic feel while the metallic gives a modern and industrial presence. However, the materials you buy for the louvers should be based on your preference.
“… It is Unacceptably Easy to Publish “Statistically Significant” Evidence Consistent with Any Hypothesis”
Monday, January 9th, 2012Want to look and feel younger? Well, there’s a properly done study, statistically significant at p < .05, showing that people who listen to The Beatles "When I’m Sixty-Four" actually became a year and a half younger! Far fetched? Sure, but no more so than umpteen conclusions published in the scientific literature every day purporting to establish some causal connection based on nothing more than a statistical analysis of a series of observations. That’s the point demonstrated conclusively in False-Positive Psychology: Undisclosed Flexibility in Data Collection and Analysis Allows Presenting Anything as Significant.
Though a paper may validly claim that the likelihood of the reported causal connection being due to chance alone is 5% or less (i.e. p < .05), "False-Positive Psychology" demonstrates that researchers free to modify as few as four variables (such as the number of observations to be made, sorting those observed by gender or stratifying outcomes) more likely than not have "discovered" a causal association that doesn’t exist. The harm done by publishing such false-positives are obvious. As the authors put it:
"First, once they appear in the literature, false positives are particularly persistent. Because null results have many possible causes, failures to replicate previous findings are never conclusive. Furthermore, because it is uncommon for prestigious journals to publish null findings or exact replications, researchers have little incentive to even attempt them. Second, false positives waste resources: They inspire investment in fruitless research programs and can lead to ineffective policy changes. Finally, a field known for publishing false positives risks losing its credibility."
To vaccinate against infecting the scientific literature with false-positives the authors conclude with suggestions similar to those we’ve seen elsewhere in efforts to promote evidence-based science. At the heart of the suggested approach is transparency from the moment the experiment is conceived all the way through publication. There are six for authors and four for reviewers; be sure to read them all.