Joint conomic design of (x)over-bar and R charts under Weibull shock models

This paper deals with the joint economic design of (x) over bar and R charts when the occurrence times of assignable causes follow Weibull distributions with increasing failure rates. The variable quality characteristic is assumed to be normally distributed and the process is subject to two independent assignable causes (such as tool wear-out, overheating, or vibration). One cause changes the process mean and the other changes the process variance. However, the occurrence of one kind of assignable cause does not preclude the occurrence of the other. A cost model is developed and a non-uniform sampling interval scheme is adopted. A two-step search procedure is employed to determine the optimum design parameters. Finally, a sensitivity analysis of the model is conducted, and the cost savings associated with the use of non-uniform sampling intervals instead of constant sampling intervals are evaluated.

Bifurcation of limit cycles from a centre in R-4 in resonance 1:N

Fundação de Amparo à Pesquisa do Estado de São Paulo (FAPESP)

Analysis of the Priestley-Taylor α parameter for a bean crop

This work deals with the Priestley-Taylor model for evapotranspiration in different grown stages of a bean crop. Priestley and Taylor derived a practical formulation for energy partitioning between the sensible and latent heat fluxes through the α parameter. Bowen ratio energy balance (BREB) was carried out for daily sensible and latent heat flux estimations in three different crop stages. Mean daily values of Priestley-Taylor α parameter were determined for eleven days during the crop cycle. Diurnal variation patterns of α are presented for the growing, flowering and graining periods. The mean values of 1.13 ± 0.33, 1.26 ± 0.74, 1.22 ± 0.55 were obtained for a day in the growing, in the flowering and for graining periods, respectively. Eleven days values of α are shown and gave a mean value of 1.23 ± 0.10 which agree on the reported literature.

Search for Top Squarks in R-Parity-Violating Supersymmetry Using Three or More Leptons and b-Tagged Jets

Conselho Nacional de Desenvolvimento Científico e Tecnológico (CNPq)

Measurement of the ratio of inclusive jet cross sections using the anti-k(T) algorithm with radius parameters R=0.5 and 0.7 in pp collisions at root s=7 TeV

Conselho Nacional de Desenvolvimento Científico e Tecnológico (CNPq)

The Priestley-Taylor parameter α for the Amazon forest

Priestley and Taylor provided a practical formulation of the partitioning of net radiation between heat flux and evaporation contained within a parameter α. Their model (PTM) needs verification under a range of environmental conditions. Micrometeorological data sets collected over the Amazon forest at the Ducke Reserve site (2°57′S; 59°57′W) gave an opportunity to evaluate α. Evidence presented here and by others shows that there is pronounced diurnal variation in α, with minimum values around midday and maximum values in the morning and evening hours. During unstable and stable conditions in the daylight hours, the Bowen ratio (B) varied from 0.10 to 0.57 and -0.71 to -0.08, respectively, whereas α varied from 0.67 to 1.16 and 1.28 to 3.12, respectively. A mean value of α = 1.16±0.56 was obtained from daytime hourly values for two days. The daily data sets from three expeditions gave a mean of α = 1.03±0.13. This work confirms that α is a function of atmospheric stability over the Amazon forest. Thus the PTM should be applied with caution over time-intervals of one day or less because of the sensitivity to variation in α. The calculated values of α are in general agreement with those reported in literature. © 1991.

Radiometric 81Kr dating identifies 120,000-year-old ice at Taylor Glacier, Antarctica

We present successful 81 Kr-Kr radiometric dating of ancient polarice. Krypton was extracted from the air bubbles in four∼350-kg polar ice samples from Taylor Glacier in the McMurdo Dry Valleys, Antarctica, and dated using Atom Trap Trace Analysis (ATTA). The 81 Kr radiometric ages agree with independent age estimates obtained from stratigraphic dating techniques with a mean abso-lute age offset of 6±2.5 ka. Our experimental methods and sampling strategy are validated by (i) 85 Kr and 39 Ar analyses that show the samples to be free of modern air contamination and (ii)air content measurements that show the ice did not experience gas loss. We estimate the error in the 81 Kr ages due to past geomagnetic variability to be below 3 ka. We show that ice from the previous interglacial period (Marine Isotope Stage 5e, 130–115 ka before present) can be found in abundance near the surface of Taylor Glacier. Our study paves the way for reliable radiometric dating of ancient ice in blue ice areas and margin sites where large samples are available, greatly enhancing their scientific value as archives of old ice and meteorites. At present, ATTA 81Kr analysis requires a 40–80-kg ice sample; as sample requirements continue to decrease, 81 Kr dating of ice cores is a future possibility.

Sayings of the Jewish Fathers : comprising Pirqe Aboth and Pereq R. Meir ; ... with ... specimen pages of the Cambridge University manuscript of the Mishnah 'Jerushalmith' from which the text of Aboth is taken

by Charles Taylor

Acht Lieder für eine Singstimme mit Klavierbegleitung. Op. 61.

Swedish, English, and German words.

Reflections of a lifetime reader : an address delivered by Carl R. Augusto to the Conference of Librarians Serving Blind and Physically Handicapped Individuals, Baltimore, Maryland, May 4, 1992.

Shipping list no.: 93-0073-P.

Harriet Martineau's autobiography /

"Memorials of Harriet Martineau. By Maria Weston Chapman" (with special t.-p.): v. 2, [131]-596.

Stories by American authors.

v. 6. The village convict, by C. H. White. The Denver express, by A. A. Hayes. The misfortunes of Bro' Thomas Wheatley, by Lina R. Fairfax. The heartbreak cameo, by L. W. Champney. Miss Eunice's glove, by A. Webster. Brother Sebastian's friendship, by H. Frederic.--v. 7. The bishop's vagabond, by Octave Thanet. Lost, by E. Bellamy. Kirby's coals of fire, by Louise Stockton. Passages from the journal of a social wreck, by Margaret Floyd. Stella Grayland, by J. T. McKay. The image of San Donato, by Virginia W. Johnson.--v. 8. The brigade commander, by J. W. De Forest. Split zephyr, by H. A. Beers. Zerviah Hope, by Elizabeth S. Phelps. The life-magnet, by A. A. Adee. Osgood's predicament, by Elizabeth D. B. Stoddard.--v. 9. Marse Chan, by T. N. Page. Mr. Bixby's Christmas visitor, by C. S. Gage. Eli, by C. H. White. Young Strong of "The Clarion," by Milicent W. Shinn. How old Wiggins wore ship, by Captain R. T. Coffin. "--mas has come," by L. Kip.--v. 10. Pancha, by T. A. Janvier. The ablest man in the world, by E. P. Mitchell. Young Moll's peevy, by C. A. Stephens. Manmat'ha, by C. De Kay. A daring fiction, by H. H. Boyesen. The story of two lives, by Julia Schayer.

The Mexican war and its heroes : being a complete history of the Mexican war, embracing all the operations under Generals Taylor and Scott, with a biography of the officers ; also, an account of the conquests of California and New Mexico, under Gen. Kearney, Cols. Doniphan and Fremont ; together with numerous anecdotes of the war, and presonal adventures of the officers.

A reprint of two separate works: General Taylor and his staff, Philadelphia, Grigg, Elliot & co., 1848, and General Scott and his staff. Philadelphia, Grigg, Elliot & co., 1848.