Cycle time definition

The formal definition of this quality factor, Q, is the amount of power stored in the resonator divided by the amount of power dissipated per cycle (at 9.5 GHz a cycle time is l/(9.5 x 109) 100 picoseconds). The dissipation of power is through the resonator walls as heat, in the sample as heat, and as radiation reflected out of the resonator towards the detector. The cycle time is used in the definition because the unit time of one second would be far too long for practical purposes within one second after the microwave source has been shut off, all stored power has long been dissipated away completely. 

Figures 3 and 4 illustrate how a biennial document review process and document processing cycle time metrics faltered in their early stages due to lack of process ownership, definition, and management review. This situation presented a compliance risk to the organization and resulted in poor business efficiencies. Improve-...

In other work cyclic operation of a metal hydride refrigerator [3] was analyzed. With the help of mathematical model for calculation of transfer processes to HHP the algorithm of definition of optimum switching of heat flows in system has been developed at given cycle time. The algorithm is constructed from a condition of achievement of the maximal refrigerating effect (real COP) on unit of brought heat. 

CYCLE TIME FOR MINIMUM COST PER UNIT OF HEAT TRANSFER There are many different circumstances which may affect the minimum cost per unit of heat transferred in an evaporation operation. One simple and commonly occurring case will be considered. It may be assumed that an evaporation unit of fixed capacity is available, and a definite amount of feed and evaporation must be handled each day. The total cost for one cleaning and inventory charge is assumed to be constant no matter how much boiling time is used. The problem is to determine the cycle time which will permit operation at the least total cost. 

Erom this definition, Lf is the amonnt of cake formed per nnit area of filter cloth per unit of time. In vacnnm filtration, the only time that the cake is formed is when the drum is submerged in the tank. In pressure filtration, the only time that the cake is also formed is when the slndge is pumped into the plates. Thns, t in the previons equation is called the form time tf. Also, the filters operate on a cycle. Calling the cycle time as t tf may be expressed as a fraction / of C- Thus, t = tf = fL may be... 

Fig. 1. The basic line-narrowing m.p. sequence and definition of the pulse spacing t, the pulsewidth t, and the cycle time The pulses embraced by t constitute a cycle because they impose a zero net rotation on the nuclear magnetization. The cycle is repeated over and over and the NMR signal is sampled at integer multiples of t. ...

The cycle time. Ate, is the time that separates two successive injections. The cycle time is somewhat arbitrarily defined. Several definitions and approximations can be used, depending on the complexity of the separation ... 

We can also assume that the cycle time is equal to the time between the moment when the concentration of the first component exceeds a certain threshold, i.e., 1 X 10 M, or 1 X 10 mg/mL, and imtil the concentration of the second component becomes smaller than the same threshold [3-7]. This definition gives smaller values of the cycle time i.e., the corresponding production rate is larger), which depend on the resolution between the two bands, i.e., on most... 

For the definition of the cycle time, they considered the time required for regeneration and re-equilibration of the column after each nm. Assuming that j column volumes of solvent are needed to regenerate the column, the cycle time will be defined as the analytical retention time of the more retained component plus j times the void time. With this definition, the production rate can be expressed as ... 

The sensitivity of this SFC-MS combination was evaluated with two standards methyl arachidate (326 Da) and tristearin (890 Da). The instrximent was tuned to "unit" resolution (10% valley definition) before the sensitivity measurements were made. Splitless injection of 800 pg of methyl arachidate produced a mass chromatogram of m/z 344, [M+NH4] , with a S/N of approximately 4. The scan range was m/z 100 to 500 with a 1 s scan cycle time. Splitless injection of 12 ng of tristearin produced a mass chromatogram of m/z 908,... 

Although development of life cycle process definitions may not be initiated prior to when the product (system product, subsystem assembly, or component snbassembly) for which it is intended to snpport is defined, the enterprise shall schedule applicable downstream life cycle processes to be available at the time needed to... 

At the same time, time to market is more and more important. This leads to the tendency to reduce the development time from product definition to start of production. In the 70s and 80s development cycles could go up to 10 years, whereas the current trend is to achieve cycle times of 30 months or less. To deliver a product at the right point in time contributes direcfly to the revenue. If a car has a delay of 6 months, the lifecycle revenue declines by 30 % [5]. Aligned to the reduction of development time, the production lifecycle was approximately reduced by 30-50 % during the last 30 years. 

Thermoplastic matrices, by definition, require no cure cycle. They are heated until they flow or permanently deform, pushed into their new shape, and cooled. Elimination of cure cycles reduces processing cycle times. 

In batch operations, the concept of cycle time is used to refer to the average time required to cycle through all necessary steps to produce a batch. The formal definition is found by dividing the total time to produce a number of batches by the number of batches. Thus, from Equations (3.1) and f3.2T... 

In its more general usage, however, cycle time is how long it takes from when a material enters a production faciUty until it exits. Depending on the industry, this definition is appropriate with sUght modifications. For example, in the automobile collision repair industry, the term cycle time refers to the time a car enters the faciUty for repair until the repair is completed. 

The effect of chronic administration of BCAAs on exercise performance has also been examined. Following 2 weeks of BCAA supplementation (16 g/day), performance of a 40-km cycling time trial in temperate ambient conditions was improved by 12% compared with placebo. However, the data from this study are still not pnblished as a full paper, precluding any definitive conclnsions on those results. The influence of chronic BCAA supplementation on exercise performance warrants further investigation. 

In order to provide a representative and reproducible GC peak integration, the total MID cycle time on the chromatographic time scale should allow for the acquisition of 8-10 data points over a chromatographic peak (Figure 2.232). The cycle time has a direct influence on the available measurement time for each ion (dwell time). If the MID cycle time is too short, the sensitivity of the instrument is compromized too high values lead to a poor GC peak definition. 

At this stage it was also decided to classify cyclic oxidation testing into three classes based upon the time at temperature during each cycle. The definitions were agreed to be as follows ... 

The initial constructions appear to be capable of offering fabrication cost savings over painted parts such as bumper fascia, but it is too early for a definitive economic comparison due to the uncertainties of scrap rate, cycle time effects, ability to match metallic colors (on painted metal surfaces), etc. 

Moulding in this manner gives a shorter cycle time than core back moulding and it is a method of achieving the usual requirements of multi-shot such as multi-colour or hard/soft combinations. The knit line is also stronger due to the higher temperature at the interface when the flows meet. However, the materials do not maintain good separation and definition at the interface, which can be a problem in potential applications for this technique. 

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