What's the difference between iteration and selection?

Iteration


Definition:

  • (n.) Recital or performance a second time; repetition.

Example Sentences:

  • (1) Signals were processed by iterative routines that computed the location of one or two independent dipoles that best reconstruced the observed surface potentials.
  • (2) A line iterative technique is described to solve numerically the resulting coupled system of nonlinear partial differential equations with physiologically relevant boundary and entrance conditions.
  • (3) The local secondary structure was calculated from sequential and medium-range backbone NOEs with the double-iterated Kalman filter method [Altman, R. B., & Jardetzky, O.
  • (4) 9.59am GMT Summary We’ll leave you with a summary of what transpired here throughout the day: • Julia Gillard announced a contest for her position as prime minister following calls by Simon Crean, a senior minister in her government, for her to be replaced by her predecessor, Kevin Rudd • Shortly before the ballot was to take place Kevin Rudd announced he would not stand for the Labor Party leadership , re-iterating his promise to the Australian people that he would not challenge Julia Gillard • When it came time for the ballot, Gillard was the only person who stood for the leadership and she and her deputy Wayne Swan were elected unopposed .
  • (5) Flow-karyotypes are normalized using an iterative fitting procedure, using corrections for (1) amplification of HO and CA fluorescence, (2) cross-talk between the fluorescence signals of HO and CA, and (3) offset of the HO and CA origin.
  • (6) Various iterative algorithms for separation of superimposed event sequences were designed, and their efficiency examined through simulation studies.
  • (7) With larger differences in the analog values (and larger feedback error) at each iteration, we found that networks learned to transmit different chaotic attractors.
  • (8) An iterative method is presented which solves for the radius of curvature despite the variation in magnification.
  • (9) We have investigated the properties of a recursive process in which the output signal from a given RF excitation pulse may be used as the input (excitation) pulse of a subsequent iteration.
  • (10) The Vancouver Sedative Recovery Scale (VSRS) was developed through an iterative process during which we identified numerous indicators of levels of alertness among sedated children, and then determined the applicability and face validity of these indicators.
  • (11) The PIC scores of 132 learning-disabled children between the ages of 6 and 12 years were investigated using Q-factor analysis, four hierarchical-agglomerative clustering techniques, and one iterative partitioning clustering technique.
  • (12) But it also succeeded by elevating the likes of Luke Skywalker and Han Solo to the kind of status usually reserved for totemic superheroes such as Batman, Superman and Spider-Man, characters destined to be wheeled out time and time again in different big screen iterations.
  • (13) Both single dose treatment and iterated injections caused significant retardation of tumour growth, and continuous infusion had a more pronounced effect, almost completely retarding increase in tumour volume; these differences in effect in between the treatment schedules were not, however, statistically significant.
  • (14) Implementing ergonomic interventions is an ongoing, iterative process.
  • (15) An explicit solution to these equations giving true corneal thickness in terms of apparent thickness cannot be established, and an iterative procedure is used to develop a relationship for a number of different pachometer configurations.
  • (16) The retrieval is done by using a bidimensional Gerchberg-Saxton phase-retrieval algorithm joined to an iterative phase-unwrapping algorithm.
  • (17) This algorithm consists of a versatile variation scheme and an innovative decision rule, the essence of which lies in a radical revision of the conventional philosophy of optimization: A number of configurations of variables with better values, instead of only a single best configuration, are selected as starting points for the next iteration.
  • (18) With the help of a computer program using Newton's iterative method, it is possible to obtain a practically instantaneous solution for the two-wavelenght method equation even for values different from 2 for the ratio k of the extinction coefficients.
  • (19) Three methods of obtaining distance constraints from 2D NOE peak intensities are examined: one entails a conservative use of ISPA, one assumes the ISPA to be fairly accurate, and one utilizes an iterative relaxation matrix method called MARDIGRAS (matrix analysis of relaxation for discerning the geometry of an aqueous structure), developed in this laboratory.
  • (20) They opposed the first iteration of the House healthcare bill as not going far enough to repeal Obamacare.

Selection


Definition:

  • (n.) The act of selecting, or the state of being selected; choice, by preference.
  • (n.) That which is selected; a collection of things chosen; as, a choice selection of books.

Example Sentences:

  • (1) This selective review emphasizes advances in neurochemistry which provide a context for current and future research on neurological and psychiatric disorders encountered in clinical practice.
  • (2) The ability of azelastine to influence antigen-induced contractile responses (Schultz-Dale phenomenon) in isolated tracheal segments of the guinea-pig was investigated and compared with selected antiallergic drugs and inhibitors of arachidonic acid metabolism.
  • (3) Together these results suggest that IVC may operate as a selective activator of calpain both in the cytosol and at the membrane level; in the latter case in synergism with the activation induced by association of the proteinase to the cell membrane.
  • (4) Recently, the validity of the American Thoracic Society (ATS) standards for selection of spirometric test results has been questioned based on the finding of inverse dependence of FEV1 on effort.
  • (5) This death is also dependent on the presence of chloride and is prevented with the non-selective EAA antagonist, kynurenic acid, but is not prevented by QA.
  • (6) Microionophoretically applied excitatory amino acids induced firing of extracellularly recorded single units in a tissue slice preparation of the mouse cochlear nucleus, and the similarly applied antagonist 2-amino-5-phosphonovalerate (2APV) was demonstrated to be a selective N-methyl-D-aspartate (NMDA) receptor antagonist.
  • (7) Immunocytochemistry was used to visualize cytoskeletal structures and to assay selective disruption of neurofilaments by acrylamide.
  • (8) On removal of selective pressure, the His+ phenotype was lost more readily than the Ura+ Trp+ markers, with a corresponding decrease in plasmid copy number.
  • (9) Thus, saponin and ammonium chloride can be used to isolate whole infected erythrocytes, depleted of hemoglobin, by selective disruption of uninfected cells.
  • (10) Rapid overgrowth of all cultures with the E. coli necessitated the use of selective media containing antimicrobial agents to which the E. coli was sensitive.
  • (11) These effects are similar to those reported for AVP and phorbol esters, activators of protein kinase C. Forskolin and isoproterenol, which induce cAMP accumulation, activated extractable topoisomerase II (maximum 5-15 min after treatment), but not topoisomerase I. Permeable cyclic nucleotide analogs dBcAMP and 8BrcGMP selectively activated extractable topoisomerase II and topoisomerase I activities, respectively.
  • (12) Breast reconstruction should not be limited to the requiring patients, but should represent, in selected cases with favourable prognosis, an integrative and complementary procedure of the treatment.
  • (13) A simple method of selective catheterization of the superficial femoral artery (SFA) following antegrade puncture of the common femoral artery is described.
  • (14) These patients had undergone selective and bilateral simultaneous IPS sampling for diagnostic purposes or for neurosurgical indications.
  • (15) A sensitive, selective and easy to use high-performance liquid chromatographic method for the determination of cicletanide, a new diuretic, in plasma, red blood cells, urine and saliva is described.
  • (16) Selective removal of endothelium had no effect on BK-induced contraction or the action of the antagonists.
  • (17) Aside from these characteristic findings of HCC, it was important to reveal the following features for the diagnosis of well differentiated type of small HCC: variable thickening or distortion of trabecular structure in association with nuclear crowding, acinar formation, selective cytoplasmic accumulation of Mallory bodies, nuclear abnormalities consisting of thickening of nucleolus, hepatic cords in close contact with bile ducts or blood vessels, and hepatocytes growing in a fibrous environment.
  • (18) When irradiated circular DNA, previously nicked by T4 endonuclease V, is briefly exposed to elevated temperature, the DAN becomes susceptible to the action of exonuclease V, and pyrimidine dimers are selectively released.
  • (19) Project grants to selected State and local agencies amounted to about $.8 billion.
  • (20) These results provide evidence that trait selection can change gonadotrophin receptor concentration and the dynamics of hormone secretion during the oestrous cycle of the mouse.