Regression Driven F--Transform and Application to Smoothing of Financial Time Series

In this paper we propose to extend the definition of fuzzy transform in order to consider an interpolation of models that are richer than the standard fuzzy transform. We focus on polynomial models, linear in particular, although the approach can be easily applied to other classes of models. As an example of application, we consider the smoothing of time series in finance. A comparison with moving averages is performed using NIFTY 50 stock market index. Experimental results show that a regression driven fuzzy transform (RDFT) provides a smoothing approximation of time series, similar to moving average, but with a smaller delay. This is an important feature for finance and other application, where time plays a key role.Comment: IFSA-SCIS 2017, 5 pages, 6 figures, 1 tabl

Mössbauer diffractometry on polycrystalline (57)Fe3Al

A Mossbauer powder diffractometer was used to measure diffraction patterns from polycrystalline foils of (Fe3Al)-Fe-57. The intensities of Bragg diffractions were measured as a function of the energy of the incident photon. The bee fundamental diffractions showed large changes in intensity as the incident energy was tuned through the nuclear resonances. These variations of diffraction intensity with incident energy were calculated with reasonable success using a kinematical theory of diffraction that included effects of coherent interference between x-ray Rayleigh scattering and, more importantly for these samples, Mossbauer scattering from nuclei having different hyperfine magnetic fields

Correlation of glycosylated hemoglobin with microalbuminuria to predict renal damage in diabetic patients

Background: Regular screening of levels of glycosylated hemoglobin and microalbuminuria, diabetic nephropathy can be prevented. The aim was to assess and compare the levels of glycosylated hemoglobin, microalbuminuria and serum creatinine in type 2 diabetic patients divided in groups of those on default antidiabetic treatment compared with those on regular antidiabetic treatment and to assess its correlation in type 2 of diabetic nephropathy. Methods:Two hundred diabetic patients above 40 years of age and 200 age matched control subjects with levels of glycosylated hemoglobin < 6.5% and on regular antiglycemic therapy were selected. Fasting plasma sugar was estimated by the glucose oxidase (GOD) - glucose peroxidase (POD). Glycosylated hemoglobin and microalbuminuria level was measured by the immunoturbidimetric method and serum creatinine estimation was done by the Jaffe’s kinetic method. p value was drawn using the student’s paired t-test. Results: There is a strong correlation between the increase in the levels of glycosylated hemoglobin with the corresponding rise in the levels of microalbuminuria and serum creatinine. Conclusion: Periodic surveillance of the levels of microalbuminuria should be carried out in the type 2 diabetic patients to prevent further damage by early detection of diabetic nephropathy.

Effect of cardiac surgery on maternal and perinatal outcome in rheumatic heart disease with pregnancy: a comparative study

Background: Rheumatic heart disease remains the commonest heart disease in India with mitral stenosis being the most common lesion and is associated with significant maternal and perinatal mortality and morbidity. The objective of this study was to compare maternal and perinatal outcome in women with rheumatic heart valvular disease who had no surgery or had percutaneous balloon mitral valvuloplasty (PBMV) or had valvular replacement surgery.Methods: It was a retrospective study in 113 women with rheumatic heart disease with various valvular lesion admitted in the hospital in previous 10 years. There were 58 (51.35%) patients without cardiac surgery (Group 1), 24 (21.23%) with PTMC (Group 2) and 31 (27.43%) with valve replacement surgery (Group 3). Maternal and perinatal outcome were compared in three groups.Results: The baseline characteristics were similar in the three group. In cardiac complications New York Heart Association (NYHA) deterioration was significantly higher (24.1%) in non-operated group (Group 1) as compared to Group 2 (12.3%) and Group 3 (16.1%). There was no difference in Group 2 and Group 3. Need of cardiac medication (digoxin) was also highest (67.2%) in Group 1 as compared to Group 2 (24.6%) (p = 0.002) and Group 3 (38.7%) (p = 0.001) but no difference in Group 2 and Group 3. Anticoagulant were given to significantly higher number (54.8% of cases in Group 3 (valve replacement) as compared to Group 1 (3.4%) and Group 2 (12.5%). There was no significant difference in obstetric events and mode of delivery in the three groups. Similarly, there was no difference in fetal outcome in the three groups as regard to mean birth weight, APGAR score, fetal growth restriction, fetal or neonatal death or congenital anomalies in the three groups.Conclusions: Cardiac surgery before or during pregnancy did not significantly improve maternal or perinatal outcome. Only cardiac events and need of medication was reduced with surgery. Hence surgery should be performed judiciously in selected cases

Experimental Study of Convective Heat Transfer in a Horizontal Tube Using Nanofluids

Experimental analysis of heat transfer characteristics of Al2O3/water and CuO/water nanofluids flowing inside a horizontal circular tube heated with uniform heat flux is conducted at Reynolds number range of 2800 to 5000. Al2O3 and CuO nanoparticles of 45 nm average size dispersed in distilled water to form stable nanofluids. The volume concentration range of both nanofluids was 0.1% to 0.7%. The result indicates that heat transfer coefficient of both nanofluids increase as compared to base fluid, water. The heat transfer coefficient of CuO/water nanofluid is higher than that of Al2O3 nanofluid for the same concentration and same Reynolds number. In case of CuO/water nanofluid the percentage increase in heat transfer coefficient at Reynolds number 4800 was 40% as compared to water (at 0.1 vol. %) while in case of Al2O3/water nanofluid it was 22.2%. Further, the pressure drop by using nanofluids was not noticeable

Study of intraoperative squash cytology of intracranial and spinal cord tumors

Background: The aim was to study the cytomorphology of neoplastic lesions of brain and spinal cord by intraoperative squash cytology, compare it with the histopathological diagnosis on excision biopsy/surgical specimen and establish a correlation. The causes of erroneous diagnoses achieved at squash cytology of intracranial and spinal cord tumors were ascertained. Tumor types having the advantage of diagnostic certainty by squash cytology of intracranial and spinal cord lesions was also determined.Methods: Squash preparations of 70 patients suspected to have neoplasia were made and stained with rapid hematoxylin and eosin stain and rapid Papanicolaou stain. A few squash smears were also dry fixed and stained with Giemsa stain. The smears were typed according to the cytomorphological criteria and the cytodiagnoses was compared with the histopathological diagnoses and a correlation was established.Results: A positive predictive value for intraoperative squash cytology for diagnosis of intracranial and spinal cord tumors was seen to be 100% and a negative predictive value of 97.22% were established by this study. The sensitivity was found to be 97.22% and the specificity was 100%. Thus, the accuracy of the study was 98.57%.Conclusions: Squash smear cytology of the brain and spinal cord tumors performed intraoperatively for diagnostic consultation fulfills all the determinants of an excellent diagnostic modality.