System Abandonment

A slowly performing user interface is certainly an irritant but there comes a point where the time one is required to wait for information simply cannot be justified. This is the threshold where the user effectively throws in the towel and chooses to provide care deprived of the requested data or with a need to source it from elsewhere. The extent to which one is prepared to tolerate a slowly performing system varies from one situation to the next and is at least in part dependent upon  

Contaminating this sound safety argument with expressions of frustration, failure to meet project milestones and product reputation can lessen the safety argument s impact. 

It should also be remembered that systems can experience slow performance in components which do not have an obvious user interface. Most solutions are architecturally modular and whilst the user interface may be perfectly responsive, a different part of the system may be performing sub-optimally. For example, inbound and outbound messaging can quickly be compromised where transactional demand outstrips processing power. The effect might not be obvious until a user notices that messages fail to arrive in a timely manner. Where the delay is beyond what is required and acceptable in the clinical environment, there is the potential for harm to occur. 

The performance of a system is largely dependent on balancing transactional demand with processing power and communication bandwidth. One is therefore required to think about the specification of both in assessing likely performance. Note that most systems consist of large numbers of components and not all will be equally performant. The system as a whole will be compromised by the slowest dependency and determining which element that will be can be complex. 

Perhaps the most significant performance-impacting factor for most HIT systems is the number of users operating the system. Note however that there is an important distinction here between the total number of users with an account on the system and the number who are concurrently using the system at a point in time. The existence of a user account is likely to occupy no more than a few kilobytes of data in the database with little or no impact on overall system performance. However the number of users actively generating system transaction at any one time has a strong correlation with processor d and. 

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Lamp Method the sample is burned in a closed system in an atmosphere of 70% CO2 and 30% oxygen in order to avoid formation of nitrogen oxides. This method was to have been abandoned as it takes three hours to carry out, but remains officially required for jet fuel sulfur analysis. 

At one time thiols were named mercaptans Thus CH3CH2SH was called ethyl mercaptan according to this system This nomenclature was abandoned beginning with the 1965 revision of the lUPAC rules but is still sometimes encountered When one encounters a thiol for the first time especially a low molecular weight thiol its most obvious property is its foul odor Ethanethiol is added to natural gas so that leaks can be detected without special equipment—your nose is so sensitive that it can detect less than one part of ethanethiol m 10 000 000 000 parts of arr The odor of thiols weakens... 

Acid-cataly2ed hydroxylation of naphthalene with 90% hydrogen peroxide gives either 1-naphthol or 2-naphthiol at a 98% yield, depending on the acidity of the system and the solvent used. In anhydrous hydrogen fluoride or 70% HF—30% pyridine solution at — 10 to + 20°C, 1-naphthol is the product formed in > 98% selectivity. In contrast, 2-naphthol is obtained in hydroxylation in super acid (HF—BF, HF—SbF, HF—TaF, FSO H—SbF ) solution at — 60 to — 78°C in > 98% selectivity (57). Of the three commercial methods of manufacture, the pressure hydrolysis of 1-naphthaleneamine with aqueous sulfuric acid at 180°C has been abandoned, at least in the United States. The caustic fusion of sodium 1-naphthalenesulfonate with 50 wt % aqueous sodium hydroxide at ca 290°C followed by the neutralization gives 1-naphthalenol in a ca 90% yield. 

Roasting . Roasting has been largely abandoned ia modem copper smelters, ia which this function is combiaed with the smelting furnace. In older systems, the multiple-hearth roaster is a brick-lined tower having horizontal brick hearths. The concentrate is iatroduced at the top hearth, where rotating arms with rabble blades turn it over and move it to holes ia the hearth. The concentrate is transferred successively to lower hearths and finally... 

This system has proven to provide adequate levels of safety in the Gulf of Mexico and other similar areas where it is possible to abandon the location during a catastrophic event. In the North Sea where harsh environmental conditions exist, a different approach to safety has evolved which is based on developing a Safety Case and calculating an Individual Risk Rate (IRR) to show that the risk to any individual working in the facility is As Low As Reasonably Practicable (ALARP). 

Try to avoid bolting on continuous improvement, rather make it an int ral part of the systems you put in place. If it is bolted on, it is probably not essential for day-to-day management and could quickly be ignored. For example, you might decide that the overall system will be reviewed every two years to identify improvement opportunities this can too easily be postponed, forgotten or abandoned. Instead, the system should be designed to identify weaknesses and improvement opportunities at any time. In other words, continuous improvement must be built-in. 

The steering tools have practically been abandoned and replaced by MWD systems, mostly because of the electric wireline. However, the high data rate of the electric wireline (20-30 kbits/s) compared to the low data rate of the MWD systems (1-10 bits/s) make the wireline tools still useful for scientific work. 

While a bottom-supported vessel must divert when shallow gas is encountered, a floating vessel has the additional option of simply abandoning the well. This option has led to the use of riserless systems when drilling the surface hole. However, a dynamic kill provides the only means of controlling the well. A dynamic kill makes use of annular friction as well as a heavier mud to hold backpressure on the formation. If very short wellbores are involved, the dynamic kill rates are usually to large to be practical. A well being drilled with a riserless system is very likely to be lost if shallow gas is encountered. 

The energy rule for the neutral atoms was obviously in contradiction to Bohr s calculation on the hydrogen atom, which indicated that the energies should be increasing with increasing n. It is typical of the nature of "frontier-research" that Bohr abandoned this rule for the higher atoms, since it led to the wrong structure of the periodic system, and the modified rule [(n + , n)] seems to have... 

Recently the development of Na/S batteries for car applications has been abandoned only Na/S batteries for stationary applications (load leveling) are still under development in Japan. Among the high-temperature batteries, the ZEBRA battery is the only system at present which is being commercialized for car applications. 

The distinction between a- and P-adrenergic receptors was first proposed by Ahlquist in 1948 based on experiments with various catecholamine derivatives to produce excitatory (a) or inhibitory (P) responses in isolated smooth muscle systems. Initially, a further subdivision into presynaptic a2- and postsynaptic oq-receptors was proposed. However, this anatomical classification of a-adrenergic recqrtor subtypes was later abandoned. 

The first of these was by Vieillard-Baron [5] who investigated a system of spherocylinders but failed to detect a liquid crystal phase primarily because the anisometry, L/D, of 2 was too small [37]. He also attempted to study a system of 2392 particles with the larger L/D of 5 but these simulations had to be abandoned because of their large computational cost. However, in view of the ellipsoidal shape of the Gay-Berne particles it is the behaviour of hard ellipsoids of revolution which is of primary relevance to us. 

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