Rush An - Academia.edu (original) (raw)
Papers by Rush An
New England Journal of Medicine, 2000
Archives of general …, 1998
Background: This study describes the functioning of primary care patients with major depressive d... more Background: This study describes the functioning of primary care patients with major depressive disorder, the relationship of medical comorbidity to functional status, and the effects of depression-specific treatment on functional status after 8 months.
British Journal of Educational Studies, 1963
IEEE Transactions on Biomedical Engineering, 1969
In this paper, the reciprocity theorem is used to determine the sensitivity of EEG leads to the l... more In this paper, the reciprocity theorem is used to determine the sensitivity of EEG leads to the location and orientation of sources in the brain. Quantitative information used in determnining the sensitivity is derived from constant potential plots of a threeconcentric-sphere mathematical model of the head with current applied through surface leads (the reciprocal problem), and from an electrolytic tank employing a human skull. Advantages of the reciprocal or lead field approach are outlined and the following conclusions are drawn. 1) Leads placed at the end of a diameter through the center of the brain have a range of sensitivity due to source location of only 3 to 1. 2) For the same electrode placement, sensitivity is maximum to sources oriented parallel to the line of the electrodes regardless of source location. 3) Electrodes spaced 5 cm apart are about ten times more sensitive to proximal cortical sources (by virtue of position) than to sources near the center of the brain.
Journal of International Money and Finance, 1989
The assumption that the foreign exchange market is efficient, that is, that agents are risk neutr... more The assumption that the foreign exchange market is efficient, that is, that agents are risk neutral and use all available information rationally so that the forward exchange rate is an unbiased predictor of the future spot rate, is a property often imposed in theoretical international macroeconomic models. Although a vast empirical literature has evolved to test market efficiency, we use recent developments in the theory of cointegration to provide new methods of testing several aspects of foreign exchange market efficiency. WC find evidence inconsistent with market efficiency for both Germany and the United Kingdom.
Jama-journal of The American Medical Association, 1993
To describe the distribution of plasma homocysteine concentrations in an elderly population and t... more To describe the distribution of plasma homocysteine concentrations in an elderly population and to analyze the relationship between homocysteine level and intake of vitamins and serum levels of vitamins that serve as coenzymes in homocysteine metabolism. Cross-sectional analysis of homocysteine levels and vitamin blood levels and intake in elderly participants in the Framingham Study. Population-based cohort in Framingham, Mass. A total of 1160 adult survivors, aged 67 to 96 years, from the original Framingham Heart Study cohort. Plasma homocysteine concentration correlated with plasma folate, vitamin B12, pyridoxal-5'-phosphate (PLP), and oral intakes of these vitamins, and the contribution of these vitamins to the prevalence of elevated homocysteine in the population. Homocysteine levels were positively correlated with age after controlling for vitamin concentrations. After controlling for age, sex, and levels of other vitamins, homocysteine exhibited a strong inverse association with plasma folate. When subjects were grouped by deciles of plasma folate, mean homocysteine was significantly higher in the lowest two folate deciles (15.6 and 13.7 mumol/L, respectively) than in the highest decile (11.0 mumol/L). Homocysteine demonstrated weaker, inverse associations with plasma vitamin B12 and PLP. Similar inverse associations were demonstrated between homocysteine and intakes of folate and vitamin B6, but not vitamin B12. Prevalence of high homocysteine (> 14 mumol/L) was 29.3% in this cohort, and was greatest among subjects with low folate status. Inadequate plasma concentrations of one or more B vitamins appear to contribute to 67% of the cases of high homocysteine. These results indicate a strong association between homocysteine concentration and folate, vitamin B12, and vitamin B6 status, as well as age. It is possible that a substantial majority of the cases of high homocysteine in this older population can be attributed to vitamin status.
Kidney International, 1999
active rejection. Type I is tubulointerstitial rejection without The Banff 97 working classificat... more active rejection. Type I is tubulointerstitial rejection without The Banff 97 working classification of renal allograft pathology.
Physics Letters B, 2012
We recommend you cite the published version. The publisher's URL is http://dx.
Australian and New Zealand Journal of Psychiatry, 1979
New England Journal of Medicine, 2000
Archives of general …, 1998
Background: This study describes the functioning of primary care patients with major depressive d... more Background: This study describes the functioning of primary care patients with major depressive disorder, the relationship of medical comorbidity to functional status, and the effects of depression-specific treatment on functional status after 8 months.
British Journal of Educational Studies, 1963
IEEE Transactions on Biomedical Engineering, 1969
In this paper, the reciprocity theorem is used to determine the sensitivity of EEG leads to the l... more In this paper, the reciprocity theorem is used to determine the sensitivity of EEG leads to the location and orientation of sources in the brain. Quantitative information used in determnining the sensitivity is derived from constant potential plots of a threeconcentric-sphere mathematical model of the head with current applied through surface leads (the reciprocal problem), and from an electrolytic tank employing a human skull. Advantages of the reciprocal or lead field approach are outlined and the following conclusions are drawn. 1) Leads placed at the end of a diameter through the center of the brain have a range of sensitivity due to source location of only 3 to 1. 2) For the same electrode placement, sensitivity is maximum to sources oriented parallel to the line of the electrodes regardless of source location. 3) Electrodes spaced 5 cm apart are about ten times more sensitive to proximal cortical sources (by virtue of position) than to sources near the center of the brain.
Journal of International Money and Finance, 1989
The assumption that the foreign exchange market is efficient, that is, that agents are risk neutr... more The assumption that the foreign exchange market is efficient, that is, that agents are risk neutral and use all available information rationally so that the forward exchange rate is an unbiased predictor of the future spot rate, is a property often imposed in theoretical international macroeconomic models. Although a vast empirical literature has evolved to test market efficiency, we use recent developments in the theory of cointegration to provide new methods of testing several aspects of foreign exchange market efficiency. WC find evidence inconsistent with market efficiency for both Germany and the United Kingdom.
Jama-journal of The American Medical Association, 1993
To describe the distribution of plasma homocysteine concentrations in an elderly population and t... more To describe the distribution of plasma homocysteine concentrations in an elderly population and to analyze the relationship between homocysteine level and intake of vitamins and serum levels of vitamins that serve as coenzymes in homocysteine metabolism. Cross-sectional analysis of homocysteine levels and vitamin blood levels and intake in elderly participants in the Framingham Study. Population-based cohort in Framingham, Mass. A total of 1160 adult survivors, aged 67 to 96 years, from the original Framingham Heart Study cohort. Plasma homocysteine concentration correlated with plasma folate, vitamin B12, pyridoxal-5'-phosphate (PLP), and oral intakes of these vitamins, and the contribution of these vitamins to the prevalence of elevated homocysteine in the population. Homocysteine levels were positively correlated with age after controlling for vitamin concentrations. After controlling for age, sex, and levels of other vitamins, homocysteine exhibited a strong inverse association with plasma folate. When subjects were grouped by deciles of plasma folate, mean homocysteine was significantly higher in the lowest two folate deciles (15.6 and 13.7 mumol/L, respectively) than in the highest decile (11.0 mumol/L). Homocysteine demonstrated weaker, inverse associations with plasma vitamin B12 and PLP. Similar inverse associations were demonstrated between homocysteine and intakes of folate and vitamin B6, but not vitamin B12. Prevalence of high homocysteine (> 14 mumol/L) was 29.3% in this cohort, and was greatest among subjects with low folate status. Inadequate plasma concentrations of one or more B vitamins appear to contribute to 67% of the cases of high homocysteine. These results indicate a strong association between homocysteine concentration and folate, vitamin B12, and vitamin B6 status, as well as age. It is possible that a substantial majority of the cases of high homocysteine in this older population can be attributed to vitamin status.
Kidney International, 1999
active rejection. Type I is tubulointerstitial rejection without The Banff 97 working classificat... more active rejection. Type I is tubulointerstitial rejection without The Banff 97 working classification of renal allograft pathology.
Physics Letters B, 2012
We recommend you cite the published version. The publisher's URL is http://dx.
Australian and New Zealand Journal of Psychiatry, 1979