Hidden problems

Seebauer, C. G., and Ditchfield, R., Fixing Hidden Problem with Thermal Budget, Solid State Technology, pp. 111-120 (Oct. 1997)... 

Waite, Arthur Edward, ed. Unknown world a magazine devoted to the occult sciences, mystical philosophy, alchemy, hermetic archaeology, and the hidden problems of science, literature, speculation, and history. London J. Elliott, Aug 1894-Jun 1895. 

Another major hidden problem for the ecosystem s systematic development is a possible local physical disaster, as mentioned earlier. Events such as meteorite strikes and massive volcanic eruptions could cause and have caused considerable disruption in what could be called steady progress, but the general trend on the surface towards oxidation has and will resume after such set-backs due to the very nature of life s reductive chemistry. We turn away from all these considerations of the difficulties we face in any attempt to predict the future to make the statement... 

The extensive IND literature review, evaluating all relevant international publications concerning the drug, should be carefully updated and reanalyzed for trends and emerging problems. This requires more than just an addition to the first IND literature review to reflect the years that have passed the reanalysis of the composite body of literature may reveal hidden problems that should be addressed. 

When purchasing a business, the cost can be quite high, often greater than starting from scratch. After you own the business, hidden problems may arise with the business itself, such as rising utility costs that were not expected, or money owed that cannot be collected but which you did not know about at the time of purchase. These are now your problems. 

No conclusions could be reached for 3-3 electrolytes because the integrals used in the numerical integration diverged - a sure sign that there may be some hidden problems in the analysis, physical or mathematical, which have become acute for 3-3 electrolytes, but do not show up for lower charge types. 

The use of vacuum to filter liquids and to distill materials at more reasonable temperatures is central to many of the processes in this book. With the great importance assumed by a reliable source of vacuum for these operations, it would well serve any explosive manufacturer to become familiar with convenient sources of vacuum, and the hidden problems they pose. 

This is an interesting point as most spectroscopists would never think of increased signal to noise ratios as a challenge. Do not forget that the solvent signal gets more intense as do artefacts. In addition, as the noise floor drops any previously hidden problem tends to stand out. 

Beautiful as the statistics appeared in the late 1960 s, there were hidden problems and some intelligent people pointed out very explicitly where the problems were. Foraboschi, in 1971 (17), emphasized the following ones ... 

The application of an audit/assessment process is referred by Salama et al. (2009) as an important step companies should perform in order to achieve business improvements and face the competitive pressure of today s high dynamic markets. They also argue that sometimes process related problems are not solved because companies fail to identify them, and on the other hand, the evaluation of innovative technologies or managerial practices can represent a way not only to solve hidden problems, but also to develop new business models and allow to do things that the organization is not already doing. 

On the downside, causal factor analysis is time consuming and requires the investigator to be familiar with the process for it to be effective. As can be seen later in this chapter, the accident scene may need to be revisited a number of times and areas that are not directly related to the accident may need to viewed, in order to have a complete event and causal factor chain. It requires a broad perspective of the accident in order to identify any hidden problems that would have caused the accident. 

All of this information must be archived in such a way that the complete analysis process can be retraced and checked at any time in the future, up to the time at which records can be disposed of, which may be as much as 30 years from creation. Again, there are hidden problems here that must be addressed. If, as is likely, aU of this information is stored on computer files, the... 

Bentonite (geosynthetic clay liner) (pre-hydrated or dry bentonite requiring in situ hydration) - Hydrocarbon resistance - Lower maintenance - Self-sealing properties if punctured. - Pre-hydrated can be laid at performance specification required - Requires a protection layer. - Potential hidden problems at penetrations. - Potential for drying out on slopes - In situ hydration of dry systems to achieve performance specification required - Can be uncertain - Good as geotextile mat protected by layer of soil/ stone Medium... 

Poly- vinylchloride (PVC) - Resistant to oils and water - Not resistant to fuels - Requires protective layer - Potential hidden problems around seals and penetrations - Base ground to be prepared well, ie remove stones, requires a layer of gravel and sand/ geotextile before the liner - Requires specialist installer to weld joints - Very Low - Burns readily if unprotected Medium... 

Mines may also pose hidden dangers, such as those associated with dust levels or noise. The mine operator and MSHA must keep records of these hidden problems and those records must be made available to miners. Information about previous accidents and investigations in a mine is also available to miners. Information about hidden problems, along with an account of a mine s accident and investigation history and miner access to this information is vital to ensuring a safe and healthy working environment. 

However, this extrapolation of the line into the second quadrant immediately brings an inherent and up to now hidden problem in the theoretical derivation of Eq. (1), and thus of Eq. (12), sharply into focus. In the second quadrant, K is positive, and is negative, so that it follows that the quantum number n must necessarily be a complex number, in, where the — sign functions in the fourth quadrant so that is positive, and the -I- sign in the second quadrant where is negative ... 

Expansive soils frequently cause severe damages (crack and fractures) in civil infrastructure by cyclic volume changes as their moismre modifies. The problem is very common in light structures when pressure expansion exceeds load foundation. This is a hidden problem which costs multi millions of dollars per year all over the world to repair the breaks. 

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