How to decide how to decide     

R. Bhaskar  John A. Herstein  John R. Hayes 《Instructional Science》1983,12(3):267-277

This article attempts to characterize the general problem of selecting methods for decision-making. The traditional rational approach to choice is from economics, which offers expected-value maximization. The task environment of decision method selection, however, does not seem to provide the data necessary for carrying out the expected-value calculations. Our approach uses methods from the field of cognitive science. We develop the notion of domain size in fields such as chess, borrowing the concept of a chunk from human memory. We then develop a heuristic rule for choiceamongmethods. We propose this rule as one of many possible rules.  相似文献   

Method evaluation of an enzymatic method for serum creatinine     

K. S. S. Saibaba  P. V. L. N. Srinivasa Rao  K. V. Dakshina Murty  M. Vijaya Bhaskar 《Indian journal of clinical biochemistry : IJCB》1997,12(2):139-141

Selecting the correct method for routine analysis by ‘method evaluation’ is an important component of quality assurance. It is a step-wise procedure that evaluates various analytical parameters like accuracy, precision etc of the given method. Finally reference intervals are established for selected population. We evaluated an enzymatic method for serum creatinine. The results show that it is an acceptable method based on the above mentioned criteria.  相似文献   

ISM-CMAP-Combine (ICMC) for hierarchical knowledge scenario in quality engineering education     

R. K. Upadhyay  S. K. Gaur  V. P. Agrawal  K. C. Arora 《European Journal of Engineering Education》2007,32(1):21-33

Quality assurance in engineering education is a multifaceted problem further augmented by the stakeholders of engineering education. Students, parents and employers are rightfully questioning the quality of the curriculum, the instructional delivery, the learning environment, accessibility to learning technologies and equipment, employability as well as the possibilities of lifelong learning and the improvement of knowledge (Karapetrovic 2002 Karapetrovic, S. 2002. Why and how to develop a meaningful quality assurance system in engineering schools. Int. J. Engg. Educ, 18(3): 285–294. [Web of Science ®] [Google Scholar]). The purpose of the study is, therefore, to identify the parameters that influence the quality of an engineering education system and develop an integrated model of hierarchical structuring and a concept map for pre-identified concept elements through a process of iterative-interactive consensus-driven methodology, as advocated by second-generation system design paradigm for evolving knowledge scenario of concepts related to quality engineering education.  相似文献   

Privacy risk quantification in education data using Markov model     

Dinusha Vatsalan  Thierry Rakotoarivelo  Raghav Bhaskar  Paul Tyler  Djazia Ladjal 《British journal of educational technology : journal of the Council for Educational Technology》2022,53(4):804-821

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Science education for empowerment and social change: A case study of a teacher educator in urban Pakistan     

Rubina Zahur  Angela Calabrese Barton  Bhaskar Raj Upadhyay 《International Journal of Science Education》2013,35(9):899-917

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Nychthemeral rhythmicity of urinary copper levels in healthy Indians and renal stone formers     

R. K. Singh  A. Bansal  S. K. Bansal  A. K. Upadhyay  V. K. Singh 《Indian journal of clinical biochemistry : IJCB》1992,7(1):61-65

Nychthemeral rhythmicity of urinary copper (Cu) was studied in 40 clinically healthy volunteers and 35 renal stone formers. A marked diurnal rhythm was noticed in urinary Cu levels in healthy subjects with maximum excretion at 0000 to 0600 hr followed by a progressive fall during the rest of the period reaching minimum between 1200 to 1800 hr in males and 0600 to 1200 hr in female volunteers. Similarly, all stone patients exhibited a definite rhythm in urinary Cu with significant amplitude and acrophases at 2145 hr for males and 2141 hr for female stone formers. However, there was no difference in mean 24-hr Cu excretion in male and female stone formers, whereas a significant change was observed in case of healthy subjects. Urinary Cu was found to be significantly increased in renal stone formers in comparison to healthy controls of either sex attributing a significant role of this overlooked trace mineral in the crystallization and/or activation of either of the process of stone formation in the renal tubules.  相似文献   

Association of plasma level of thiobarbituric acid reactive substances with extent of hepatocellular injury in preterm infants with cholestatic jaundice     

Rinchen D Bhutia  Bhumika Upadhyay  M Maneesh 《Indian journal of clinical biochemistry : IJCB》2006,21(2):39-41

The present study was designed to determine the association between extent of hepatocellular injury and plasma level of thiobarbituric acid reactive substances (TBARS) in pre term infants with cholestasis. Preterm infants (<35 weeks gestation) admitted to the neonatal intensive care unit were enrolled (with their parents informed consent) in either the ‘cholestasis’ group (if their direct bilirubin was >2 mg/dl) (n=25) or in the control group (n=16). Blood samples for measurement of TBARS, direct bilirubin and transaminases were obtained with-in 24 hours of enrollment. The cholestasis and control groups were comparable with respect to gestational age, birth weight and Apgar score. Serum direct bilirubin, SGOT (EC 2.6.1.1) and SGPT (EC 2.6.1.2) levels were significantly high in the cholestasis group. Plasma levels of TBARS in cholestasis group were correlated with SGOT (F=276.92; P<0.0001) and SGPT (F=355.17; P<0.0001) and differed significantly between cholestatic and control infants. Our findings suggest that oxidative stress in preterm infants with cholestasis is associated with hepatocellular injury.  相似文献   

Preface     

Bhaskar C. Harinath 《Indian journal of clinical biochemistry : IJCB》1997,12(1):2-2

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Diversity incorporated energy adaptation for A-CDMA systems over slow fading channels     

Vidhyacharan Bhaskar 《Journal of The Franklin Institute》2011,348(9):2503-2522

In this paper, a theoretical analysis of diversity incorporated Variable Energy Adaptation (VEA) in an Asynchronous Code Division Multiple Access (A-CDMA) system is discussed for Rayleigh, Rician and Nakagami slow fading channels. The adaptation is accomplished by providing the receiver with the capability of measuring the signal energy-to-noise ratio, and controlling the transmitted signal energy by means of a noise-free feedback loop. System parameters such as fading margin, maximum signal-to-noise ratio, and mean transmitter energy gain are derived and plotted for fading channels as a function of the probability of error specification and the probability of unsatisfactory operation. The mean and median probabilities of error are plotted as a function of energy-to-noise ratios for different fading channels. Error probability distribution and density functions are derived and plotted for various signal-fading distributions.  相似文献   

How to stay away from each other in a spherical universe     

Bhaskar Bagchi 《Resonance》1997,2(10):38-45

In the first part we discussed Tammes’ problem and its higher dimensional analogues. In this part we shall see how harmonic analysis and the theory of orthogonal polynomials can be used to settle some of the most interesting instances of this problem.  相似文献