What's the difference between calculation and summation?

Calculation


Definition:

  • (n.) The act or process, or the result, of calculating; computation; reckoning, estimate.
  • (n.) An expectation based on circumstances.

Example Sentences:

  • (1) Since MIRD Committee has not published "S" values for Tl-200 and Tl-202, these have been calculated by a computer code and are reported.
  • (2) In cardiac tissue the adenylate system is not a good indicator of the energy state of the mitochondrion, even when the concentrations of AMP and free cytosolic ADP are calculated from the adenylate kinase and creatine kinase equilibria.
  • (3) The statistical T value calculated for the LP-TAE group showed that the administration of LP, the tumor size, intrahepatic metastasis, portal vein infiltration, and serum total bilirubin and alpha-fetoprotein levels significantly (P < 0.01) affected the patients' survival.
  • (4) I’m not in charge of it but he’s stood up and presented that, and when Jenny, you know, criticised it, or raised some issues about grandparent carers – 3,700 of them he calculated – he said “Let’s sit down”.
  • (5) The judge, Mr Justice John Royce, told George she was "cold" and "calculating", as further disturbing details of her relationship with the co-accused, Colin Blanchard and Angela Allen, emerged.
  • (6) Twitch-tetanus ratios were calculated and found not to be related to unit contraction time.6.
  • (7) The Cao-dependent Na+ efflux was half-maximally activated by [Ca2+]o = 2.0 mM in LiSW and 7.2 mM in Tris-SW; at saturating [Ca2+]o, [Ca2+]i, and [Na+]i the maximal (calculated) Cao-dependent Na+ efflux was approximately 75 pmol#cm2.s.
  • (8) In a series of compounds with H2-antihistaminic activity, a conformational analysis was performed based on force field calculations.
  • (9) It ignores the reduction in the wider, non-NHS cost of adult mental illness such as benefit payments and forgone tax, calculated by the LSE report as £28bn a year.
  • (10) The lower limit (LL) of CBF autoregulation was calculated by a computerized program and tested for different factors for correction of the PaCO2-induced changes in CBF.
  • (11) It is proposed that microoscillations of the eye increase the threshold for detection of retinal target displacements, leading to less efficient lateral sway stabilization than expected, and that the threshold for detection of self motion in the A-P direction is lower than the threshold for object motion detection used in the calculations, leading to more efficient stabilization of A-P sway.
  • (12) On the assumption of a distribution in properties of the suspension according to the theory of Bruggeman, the capacitance is calculated to have a value of about one half this.5.
  • (13) These calculated values are compared with observed values and implications of the agreement are discussed.
  • (14) The aortic area (Torlin) for diseased stenotic aortic valves was calculated in 10 patients using two different methods; data obtained in preoperative cardiac catheterization and by intraoperative flowmetric and aortic and left ventricular pressure-recording measurements, and their mutual correlation was tested.
  • (15) It was not possible to offer all very low birthweight infants full intensive care; to make this possible, it was calculated that resources would have to increase by 26%.
  • (16) The values obtained are shown to be lower than those calculated for arigid pepsin globule.
  • (17) The use of 100% oxygen to calculate intrapulmonary shunting in patients on PEEP is misleading in both physiological and methodological terms.
  • (18) Taking into account the calculated volume and considering the triangular image as one face of the particle, it is suggested that eIF-3 has the shape of a flat triangular prism with a height of about 7 nm and the above-mentioned side-lengths.
  • (19) From this relationship we calculated the contraction level at which pH was 6.9 (%MVC6.9).
  • (20) The model electron density map, calculated to a resolution of approximately 35 A, shows an unusually high protein content in the membranes.

Summation


Definition:

  • (v. t.) The act of summing, or forming a sum, or total amount; also, an aggregate.

Example Sentences:

  • (1) Alphaxalone and endogenous steroid hormone metabolites inhibit the binding of [35S]-t-butyl bicyclophosphorothionate in some regions, enhance it in others and give biphasic concentration-dependence in others, apparently the result of algebraic summation of two effects involving regional-dependent enhancement or inhibition.
  • (2) This suggests that the curvature of the xenon clearance curve is the result of recording the summation of the activities from the alveoli and the pulmonary blood and not, as previously described, due to the existence of two different sub-populations of alveoli.
  • (3) Left ventricular cavity and muscle areas of each image were planimetered with a light-pen system and summated for volume: total volume = sigma (areas x 3 mm).
  • (4) The computer system was a hybrid of analog devices (tape-recorder, voltage summator, and high-pass filters) and a multipurpose laboratory digital device (PDP-12).
  • (5) Spatial summation was found to decrease by 30-50% as the cell was light-adapted to a threshold some 4 log units above the dark-adapted one.
  • (6) The findings strongly suggest the existence of spatial summation of the effects from GM and TA muscle at the level of a single interneuronal pool.
  • (7) The parameters mainly related to temporal summation are not different between various electrode configurations.
  • (8) Therefore, anopic observers usually need a very large amount of spatial summation to arrive at a well defined match of the projection anomaloscope.
  • (9) This model corresponds to quadratic summation of the stimulus followed by a random threshold device.
  • (10) Consequently, the slow repolarization transients of succeeding receptor potentials displayed temporal summation.
  • (11) Thus the relation of neuron geometry to aspects of spatiotemporal summation of synaptic inputs can be investigated readily.
  • (12) The summation of findings suggests that endogenous substance P plays a complementary role in the regulation of parasympathetic nerve-induced fluid secretion in the acinus but is minimally involved in degranulation from granular duct cells.
  • (13) These estimates can be summated to provide total ventricular and total brain volumes.
  • (14) This effect of parathyroid hormone, which appears to involve more than simple physiologic summation, may have important clinical implications.
  • (15) At frequencies above 15 Hz the SETi-evoked contraction dominates tension development, though IR summates with it during the rising phase.
  • (16) At reoperation because of dehiscence and hematoma interval between two operation is very short so we have got present not only hypovolemia but also summation effect of used anesthetic and plasma expander.
  • (17) The stimulant effects of amantadine and d-amphetamine summated but did not interact, response rates after d-amphetamine being augmented by pretreatment with amantadine except at intervals at which amantadine was by itself depressant.
  • (18) The laminar pattern of current sources and sinks coincident with this component was more complicated after bicuculline, reflecting the summation of current flows associated with disinhibited lamina 4 activity.
  • (19) The cochlear summating potential (SP) preceding the auditory nerve compound action potential (AP) was elicited by broadband alternating condensation and rarefaction clicks and recorded by noninvasive electrodes from the external auditory meatus (EAM) of 60 volunteers of both sexes, 12 to 67 years old, who had normal hearing for age.
  • (20) It is wiser, in the light of results reporting individual differences in the existence and extent of the paradox, and its sensitivity to stimulus conditions, to side with Blake and Fox (1973) when they observed that it is not unreasonable to suppose that various stimulus conditions might yield varying amounts of summation or even inhibition.