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61.
Evaluation of rainfall networks using entropy: II. Application 总被引:2,自引:0,他引:2
This paper, the second in the series, applies the entropy approach to space and time evaluation of rainfall networks in Louisiana. The evaluation is made for five sampling intervals: daily, 2-day, weekly, monthly, and yearly, and for two separate seasons. In each case, the best combination of raingages is suggested and the lines of equal information (isoinformation contours) are constructed showing the areas of greater or less information transfer. The isoinformation lines are especially suitable in decisions concerning the expansion of the existing network or deleting the unnecessary raingages. 相似文献
62.
In life testing, the failure-time distributions are often specified by choosing an appropriate hazard-rate function. The class of life-time distribution characterized by a linear hazard-rate includes the one-parameter exponential and Rayleigh distributions. Usually the parameters of the linear hazard-rate model are estimated by the method of least squares. This work is concerned with Bayes estimation of the two-parameters from a type-2 censored sample. Monte Carlo simulation is used to compare the Bayes risk of the regression estimator with the minimum Bayes risk. Discrete mixtures of decreasing failure rate distributions are known to have decreasing failure rates. The authors prove that the result holds for continuous mixtures as well 相似文献
63.
Madan G. Sood Jagjit Singh 《Journal of chemical technology and biotechnology (Oxford, Oxfordshire : 1986)》1985,35(1):11-13
Cladosporium herbarum grown as a surface culture in a chemically defined medium of sucrose and inorganic salts gave a high yield of fat (29.2%). The component acids of this fat have been found to be palmitic (34.2%); oleic (15.9%); linoleic (34.2%) and linolenic (15.7%). The combined proportion of linoleic and linolenic acids being about 50 per cent, the fat will be of great value for the manufacture of oil-modified resins as the films produced by such resins do not become yellow with age. 相似文献
64.
65.
V.K. Raina K. Sasidharan Samiran Sengupta Tej Singh 《Nuclear Engineering and Design》2006,236(7-8):770-783
At present Dhruva and Cirus reactors provide the majority of research reactor based facilities to cater to the various needs of a vast pool of researchers in the field of material sciences, physics, chemistry, bio sciences, research & development work for nuclear power plants and production of radio isotopes. With a view to further consolidate and expand the scope of research and development in nuclear and allied sciences, a new 20 MWt multi purpose research reactor is being designed. This paper describes some of the design features and safety aspects of this reactor. 相似文献
66.
The costs of remedial work, and the radon level reduction achieved, have been studied in a series of domestic properties in Northamptonshire, which is a radon affected area. The cost-effectiveness of the series is similar to published theoretical estimates for proposed national remediation programmes, and five times more effective than our similar analysis for the National Health Service workplace, if it is assumed that 100% of householders discovering levels above 300 Bq m-3 implement remediation. In practice, in the UK, far fewer of those who arrange an initial radon test proceed to remediation, but this domestic programme could be cost effective if more than 5% carry out remediation. Our series confirms that a considerable number of householders with radon levels in the 200 to 300 Bq m-3 range do not seek or implement remediation work. 相似文献
67.
68.
26 clinician trainees' recollections of experiences in a diagnostic preschool program were analyzed in terms of strength and weaknesses of the program. 相似文献
69.
Abstracts are not published in this journal
This revised version was published online in November 2006 with corrections to the Cover Date. 相似文献
70.
Determinants of research productivity 总被引:1,自引:0,他引:1
Earlier researchers like Turkeli, suggested that ‘the factors which determine the productivity of scientists are admittedly
complex and perhaps not amenable to real scientific analysis′. The present investigation was designed with the sole purpose
of confronting such a complex problem. Nearly 200 variables influencing research productivity were collected through relevant
literature, analysis of biographies of great scientists, and discussion with eminent scientists. Finally, through a critical
examination, 80 variables were selected for the use of Q-sort technique. The sample for the study consisted of a cross section
of scientists ranging from Fellows of Indian National Science Academy to young agricultural scientists. Mailed questionnaires
and personal interview methods were used for collecting data. Out of a total of 912 respondents, reply was obtained from 325.
On the basis of Q-sorted data, 26 variables were selected for further analysis and they were subjected to principal component
factor analysis. The results indicated eleven factors affecting research productivity of scientists. They were: persistence,
resource adequacy, access to literature, initiative, intelligence, creativity, learning capability, stimulative leadership,
concern for advancement, external orientation, and professional commitment. 相似文献