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A projective method for linear programming with box-type constraints (1986)

Rinaldi, G.

Springer

Algorithmica 1 (1986), S. 517-527

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ISSN: 1432-0541

Keywords: Linear programming ; Projective method ; Box constraints

Source: Springer Online Journal Archives 1860-2000

Topics: Computer Science , Mathematics

Notes: Abstract A specialization of the projective method for linear programming to problems with lower and upper bounds on the variables is proposed.

Type of Medium: Electronic Resource

URL: http://dx.doi.org/10.1007/BF01840460

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Practical Performance of Efficient Minimum Cut Algorithms (2000)

Jünger, M. ; Rinaldi, G. ; Thienel, S.

Springer

Algorithmica 26 (2000), S. 172-195

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ISSN: 1432-0541

Keywords: Key words. Minimum capacity cuts, Experimental performance evaluation, Computational comparisons, Literate programming, Algorithm engineering.

Source: Springer Online Journal Archives 1860-2000

Topics: Computer Science , Mathematics

Notes: Abstract. In the late eighties and early nineties, three major exciting new developments (and some ramifications) in the computation of minimum capacity cuts occurred and these developments motivated us to evaluate the old and new methods experimentally. We provide a brief overview of the most important algorithms for the minimum capacity cut problem and compare these methods both with problem instances from the literature and with problem instances originating from the solution of the traveling salesman problem by branch-and-cut.

Type of Medium: Electronic Resource

URL: http://dx.doi.org/10.1007/s004539910009

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Multicentre comparison of the antihypertensive effect of acebutolol and hydrochlorothiazide in uncomplicated mild-moderate hypertension in the elderly (1985)

Salvetti, A. ; Lucchini, M. ; Airoldi, G. ; [et al.]

Springer

European journal of clinical pharmacology 29 (1985), S. 275-279

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ISSN: 1432-1041

Keywords: hypertension ; acebutolol ; hydrochlorothiazide ; elderly ; cross-over trial ; blood pressure reduction

Source: Springer Online Journal Archives 1860-2000

Topics: Chemistry and Pharmacology , Medicine

Notes: Summary To evaluate the efficacy of acebutolol, 400–600 mg/day in elderly hypertensive patients, and to compare it with hydrochlorothiazide 25–50 mg/day, 45 patients with mild-moderate uncomplicated hypertension were treated for 6 weeks in a multicentre, single-blind, randomized, crossover trial. Acebutolol decreased supine systolic blood pressure from 186.5 to 162.7 mmHg and diastolic blood pressure from 107.4 to 92.4 mmHg. Hydrochlorothiazide decreased systolic blood pressure from 185.0 to 166.4 and diastolic blood pressure from 107.2 to 96.4. There was no difference between the effects of acebutolol and hydrochlorothiazide on blood pressure during the trial. Both drugs proved to be safe and effective antihypertensive agents, provided the major contraindications for their use were taken into account. Beta-blockade by acebutolol was highly effective in treating mild-moderate arterial hypertension in the elderly.

Type of Medium: Electronic Resource

URL: http://dx.doi.org/10.1007/BF00544080

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