What's the difference between secant and sector?

Secant


Definition:

  • (a.) Cutting; divivding into two parts; as, a secant line.
  • (a.) A line that cuts another; especially, a straight line cutting a curve in two or more points.
  • (a.) A right line drawn from the center of a circle through one end of a circular arc, and terminated by a tangent drawn from the other end; the number expressing the ratio line of this line to the radius of the circle. See Trigonometrical function, under Function.

Example Sentences:

  • (1) The absorbed light per unit area illuminated decreases with increasing angle, because the area illuminated by the laser beam is proportional to the secant of the incident angle.
  • (2) In the course of history of anatomy the prosector (dissector, incisor, secant, sculptor, procurator) held total different positions: at first he acted as a manual craftsman (barber surgeon) and as teacher's assistant lacking any academic education (organized in fraternities or guilds).
  • (3) Newton's method appears to have better convergence properties than the secant method in the likelihood ratio test case.
  • (4) Results indicate that a secant modulus could be determined by measuring indenter force and contact area.
  • (5) The basis of several solution methods is described; the PROSYN program is capable of using either of two (bracketting and the secant method) of these procedures.
  • (6) The conjugate gradient method is used to optimize the inversion slice profile produced by complex hyperbolic secant selective pulses.
  • (7) It is found that multifrequency selective excitation with sinc pulses--up to eight slices are investigated--and two-frequency inversion with hyperbolic secant pulses lead to profiles comparable in quality and selectivity to those of conventional single-frequency pulses.
  • (8) Similarly, the secant method is easier to implement for the computation of score test based intervals.
  • (9) An automated imaging technique, based upon the method of directed secants, was used to quantify variations in bone porosity and trabecular size, distribution, and orientation within serial transverse histological sections of the L1 and L2 vertebral centrum.
  • (10) The Secant formula and Euler's formula were proved to be specific cases in this general solution.
  • (11) However, the secant method may be easier to program for models with link functions that are not natural.

Sector


Definition:

  • (n.) A part of a circle comprehended between two radii and the included arc.
  • (n.) A mathematical instrument, consisting of two rulers connected at one end by a joint, each arm marked with several scales, as of equal parts, chords, sines, tangents, etc., one scale of each kind on each arm, and all on lines radiating from the common center of motion. The sector is used for plotting, etc., to any scale.
  • (n.) An astronomical instrument, the limb of which embraces a small portion only of a circle, used for measuring differences of declination too great for the compass of a micrometer. When it is used for measuring zenith distances of stars, it is called a zenith sector.

Example Sentences:

  • (1) Adding a layer of private pensions, it was thought, does not involve Government mechanisms and keeps the money in the private sector.
  • (2) Asthma is probably the commonest chronic disease in the United Kingdom, and its attendant morbidity extends outside the possible scope of the hospital sector.
  • (3) It comes as the museum is transforming itself in the wake of major cuts in its government funding and looking more towards private-sector funding, a move that has caused some unease about its future direction.
  • (4) of rats resulted in cell death and terminal degeneration in entorhinal, insular, and posterior cingulate cortices, and in the CA1, CA3 and dentate gyrus sectors of hippocampus.
  • (5) The Future Forum is a group of 57 health sector specialists chaired by the Professor Steve Field, the former chair of the Royal College of General Practitioners.
  • (6) The World Humanitarian Summit in May 2016 may be the most timely opportunity to make an honest appraisal of the effectiveness of the current system to deal with the sector’s “ new normal ” of finite resources and unlimited challenges.
  • (7) This is welcome news but it needs to be borne in mind that the manufacturing sector is still far from racing ahead and serious doubts remain about the strength of demand for manufactured goods over the medium term, particularly once stimulative measures start being withdrawn.
  • (8) "Medical professionals have perhaps been the least involved [of all sectors] in debates and discussions around abortion, and anti-choice groups have very effectively carried out a deliberate strategy of targeting and influencing health professionals.
  • (9) The FCx lesions themselves were shown to have no significant effect on DA utilisation in any CP sector.
  • (10) We present a comparison of the Canadian and American data on expenditures, identifying the sectors in which the experience of the two nations diverges most, and describing the processes of control.
  • (11) Alton Towers has a long record of safe operation and as we reopen, we are committed to ensuring that the public can again visit us with confidence.” A spokesman for the park said that said that X-Sector, the high-octane section of that park where the Smiler is based, would remain closed until further notice.
  • (12) And we will sell those assets that can be managed better by the private sector.
  • (13) "It will mean root-and-branch change for our banks if we are to deliver real change for Britain, if we are to rebuild our economy so it works for working people, and if we are to restore trust in a sector of our economy worth billions of pounds and hundreds of thousands of jobs to our country."
  • (14) Despite some high profile problems, the private sector share of community services has been expanding; its market share grew around 50% in the two years from 2010-11.
  • (15) Analysis of a transposable, element-induced o2 allele, o2-m20, revealed that sectors of endosperm cells contained the nuclear-localized O2 protein, indicating excision of the transposable element.
  • (16) After clinical examination and semen analysis, we studied 4100 patients by scrotal US with sector mechanical (7.5 MHz) probe with water bag and by transrectal US for prostatic vesicular region evaluation with 5-6.5 MHz linear probe (lately we used biplanar probe).
  • (17) We are going to see a sharp fall unless sellers hold the sector up by making aggressive offers.
  • (18) Thanks to the groundbreaking technology and heavy investment of a new breed of entertainment retailers offering access services, we are witnessing a revolution in the entertainment industry, benefitting consumers, creators and content owners alike.” ERA acts as a forum for the physical and digital retail sectors of music, and represents over 90% of the of the UK’s entertainment retail market.
  • (19) Burham's claim to be the continuity candidate, coupled with his past reputation as a Blairite, suggests a centrist leadership that would stay on course in terms of private sector involvement in public services, a crackdown on benefit claimants and a tougher stance on criminals.
  • (20) Generally, patients with anterior sector conditions showed improved performance with band-pass filters (not with ND filters).