What's the difference between boundary and constraint?

Boundary


Definition:

  • (n.) That which indicates or fixes a limit or extent, or marks a bound, as of a territory; a bounding or separating line; a real or imaginary limit.

Example Sentences:

  • (1) Patients with papillary carcinoma with a good cell-mediated immune response occurred with much lower infiltration of the tumor boundary with lymphocyte whereas the follicular carcinoma less cell-mediated immunity was associated with dense lymphocytic infiltration, suggesting the biological relevance of lymphocytic infiltration may be different for the two histologic variants.
  • (2) In contrast, boundary layer diffusion is operative in the release from the matrixes prepared by compression of physical mixtures.
  • (3) The review will now be delayed for five years, leaving the next election to be fought on the existing constituency boundaries, and seriously damaging David Cameron's chances of winning an overall majority in 2015.
  • (4) In Europe such escapees often find themselves recaptured by boundary adjustments.
  • (5) This gene was previously shown to have a DNase I- and S1-sensitive site for which the boundaries varied with the cell cycle, and we have now precisely mapped these modifications.
  • (6) Past measurements have shown that the intensity range is reduced at the extremes of the F0 range, that there is a gradual upward tilt of the high- and low-intensity boundaries with increasing F0, and that a ripple exists at the boundaries.
  • (7) The problem, however, is that this scale of economic planning and management is entirely outside the boundaries of our reigning ideology.
  • (8) His first ball reaches Ali at hip height and he flicks him to fine leg for a boundary that takes him to a quite epic century.
  • (9) Upon estimation of 5' and 3' boundaries, a 497 base stretch of homology with the TOP1 mRNA was found.
  • (10) Responses above the associated boundary decreased stimulus intensity, responses below the associated boundary increased stimulus intensity.
  • (11) The position of the sedimenting boundary can be observed at any time during the run, and up to six 'photographs' can be recorded for subsequent analysis.
  • (12) If figurative language is defined as involving intentional violation of conceptual boundaries in order to highlight some correspondence, one must be sure that children credited with that competence have (1) the metacognitive and metalinguistic abilities to understand at least some of the implications of such language (Lakoff & Johnson, 1980; Nelson, 1974; Nelson & Nelson, 1978), (2) a conceptual organization that entails the purportedly violated conceptual boundaries (Lange, 1978), and (3) some notion of metaphoric tension as well as ground.
  • (13) First, chains are constrained by their inability to penetrate the boundary.
  • (14) Within the developing CNS of mouse embryos the anterior boundaries of expression are specific for each gene.
  • (15) Cities and counties across the US have also passed laws that prohibit such performances from occurring within their boundaries.
  • (16) The rate of forward patch movement was generally greater at positions further behind the boundary.
  • (17) He said the proposals had been directed at seats that have not changed hands for many years, but said with the redrawing of the constituency boundaries required by David Cameron's desire to cut the number of constituencies no safe seats as previously defined would exist.
  • (18) 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.
  • (19) Many Iranian women are already pushing the boundaries , and observers in Tehran say women who drive with their headscarves resting on their shoulders are becoming a familiar sight.
  • (20) And then, as the Guardian revealed at the weekend, there is the potentially devastating effect of the boundary changes, which can’t really be brought in before an early election but will radically tilt the field by 2020.

Constraint


Definition:

  • (n.) The act of constraining, or the state of being constrained; that which compels to, or restrains from, action; compulsion; restraint; necessity.

Example Sentences:

  • (1) Poor lipophilicity and extremely low plasma concentrations impose severe constraints.
  • (2) Specifically, we apply techniques of data preprocessing, orthogonality constraints, and validation of solutions in a complete TC analysis, for the first time using actual MEP data.
  • (3) When this constraint was released by various treatments altering membrane structure UDP-glucose markedly inhibited bilirubin glucuronidation.
  • (4) For each theory, a constraint on preformance is proposed based on interference between the "analytic" and "synthetic" pitch perception modes.
  • (5) spectroscopy for the collection of conformational constraints, calculation of the protein structure from the n.m.r.
  • (6) Subjects initially chose to work for the higher rated food, but as the constraints for this food increased, subjects chose to work for the lower rated food.
  • (7) Dictated by underlying physicochemical constraints, deceived at times by the lulling tones of the siren entropy, and constantly vulnerable to the vagaries of other more pervasive forms of biological networking and information transfer encoded in the genes of virus and invading microorganisms, protein biorecognition in higher life forms, and particularly in mammals, represents the finely tuned molecular avenues for the genome to transfer its information to the next generation.
  • (8) Continuing pressure on household finances during the next 12 months will no doubt remain a constraint."
  • (9) Lateralization may be an expression of reflex constraints bound initially to the infant's tonic-neck posture, with later development less reflex-patterned during the acquisition of more sophisticated information-processing strategies.
  • (10) His anti-politics act may just be a shtick – pretending he's still on Have I Got News for You, satirising politics even though he's right at the centre of it – but it liberates him from the usual constraints.
  • (11) Given that lattice constraints strongly inhibit large-scale conformational changes these results allow us to identify the average solution structure with the 'open' conformer determined crystallographically.
  • (12) A dynamic optimization technique to minimize jerk cost under the constraint on jerk input was applied to interpret the results, assuming that a major goal of skilled movements was to produce optimally smooth movements.
  • (13) Its main advantages, when compared to previously available programs using the variable target function algorithm, are a significant reduction of the computation time, and a novel treatment of experimental distance constraints involving diastereotopic groups of hydrogen atoms that were not individually assigned.
  • (14) For one, the ability to raise a larger deposit is acting as a constraint.
  • (15) When the constraints are high, a Michaelis-Menten equation can be used to model the kinetics for interfacial concentrations lower than the concentration leading to the maximum reaction rate.
  • (16) Estimators of the model parameters are defined under general exact and stochastic linear constraints.
  • (17) A careful reorganization of priorities would thus be helpful in improving neonatal care in Jamaica, even in the presence of financial constraints.
  • (18) Emergence and spread of antibiotic-resistant bacteria is augmented in settings in which treatment may be inadequate because of socioeconomic constraints and where there is crowding and poor sanitation.
  • (19) The estrogen receptor seems to have a moderate tolerance for bulky substituents: All of the halogen and halomethyl substituents bind with an affinity at least 50% that of estradiol; in the three atom alkyl series, the affinity declined markedly from propargyl (44%) and allyl (38%) to propyl (5%), suggestive of detailed steric constraints or a preference for unsaturation.
  • (20) Bias is controlled by the use of least-squares curve fitting for all assays, and constraints on the elimination of outlier points.