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While the two most widely used measures of market (industrial) concentration, the -firm concentration ratio and the Herfindahl-Hirschman index , have no precise functional relationship, they can be related by means of boundary formulations. Such bounds and potential relationships, which have been considered in some earlier reported studies, are being re-examined, corrected, and reformulated in this paper. The underlying analysis uses a different approach based on majorization theory and the results are supported by computer simulation. Such boundary relationships make it possible to determine approximate values of from those of and vice versa for any given set of market shares. Much more accurate predictions of -values can be obtained with knowledge of the individual market shares of the largest firms within a market (industry), with or without knowledge of the total number of firms.
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Nitrate-driven sulfide and ferrous oxidation have received great concern in researches on sediments odor control with calcium nitrate addition. However, interrelations among sulfide oxidation, ferrous...
Platelet lymphocyte ratio (PLR) is a novel marker of inflammation that has gained popularity, especially in prognostication of cardiac diseases and malignant conditions. Several studies have examined ...
The aim: To compare the patients' self-evaluations of oral hygiene and oral health with the results of the clinical examination expressed using both the DMFT index (DT, MT, FT) and the API index; and ...
The objective of this study is to develop a Fluoride Index for mitigation of geogenic contamination by Managed Aquifer Recharge (FIMAR). This index was tested by applying to the Pambar river basin in ...
Given that the relationship between the influent C/N (generally referred to as COD/TN) ratio and nitrogen removal has not been well understood in integrated constructed wetland-microbial fuel cell (CW...
During colonoscopy, body mass index, waist circumference and waist / hip ratio is the relationship between the cecal intubation difficulty aims to define.
The purpose of this study is to evaluate the relationship between the time needed to raise the oxygen concentration in patient's blood to 90% and his/or her body mass index. The prevalence...
The aim of this study is to evaluate the prognostic value of the suppression ratio monitored by Bispectral Index for prediction of neurologic outcome after cardiac arrest. All patient admi...
As considering the close relationship between systolic dysfunction and diastolic dysfunction, the EAS index e'/(a' x s') including systolic and diastolic function could be expected to pred...
Neutrophil lymphocyte ratio NLR is an important index that evaluate the inflammatory status . It is a cost effective and readily available , and simply calculated , so that why investigato...
The ratio of two odds. The exposure-odds ratio for case control data is the ratio of the odds in favor of exposure among cases to the odds in favor of exposure among noncases. The disease-odds ratio for a cohort or cross section is the ratio of the odds in favor of disease among the exposed to the odds in favor of disease among the unexposed. The prevalence-odds ratio refers to an odds ratio derived cross-sectionally from studies of prevalent cases.
An indicator of body density as determined by the relationship of BODY WEIGHT to BODY HEIGHT. BMI=weight (kg)/height squared (m2). BMI correlates with body fat (ADIPOSE TISSUE). Their relationship varies with age and gender. For adults, BMI falls into these categories: below 18.5 (underweight); 18.5-24.9 (normal); 25.0-29.9 (overweight); 30.0 and above (obese). (National Center for Health Statistics, Centers for Disease Control and Prevention)
Measurement of the index of refraction (the ratio of the velocity of light or other radiation in the first of two media to its velocity in the second as it passes from one into the other).
The inspection of one's own body, usually for signs of disease (e.g., BREAST SELF-EXAMINATION, testicular self-examination).
The ratio of the dose that produces toxicity to the dose that produces a clinically desired or effective response.