Selecting Optimal RBF Kernel with Machine Learning for Feature Extraction and Classification in SAR Images

Kernel methods are gaining popularity in image processing applications. The accuracy of feature extraction and classification on image data for a given application is greatly influenced by the choice of kernel function and its associated parameters. As on today there existing no formal methods for selecting the kernel parameters. The objective of the paper is to apply machine learning techniques to arrive at suitable kernel parameters and improvise the accuracy of kernel based object classification problem. The graph cut method with Radial Basis function (RBF) is employed for image segmentation, by energy minimization technique. The region parameters are extracted and applied to machine learning algorithm along with RBF2019;s parameters. The region is classified to be man made or natural by the algorithm. Upon each iteration using supervised learning method the kernel parameters are adjusted to improve accuracy of classification. Simulation results based on Matlab are verified for Manmade classification for different sets of Synthetic Aperture RADAR (SAR) Images

A study on pattern of placentation in post caesarean pregnancy

Background: It appears that the rate of caesarean delivery has been increasing over the past two decades. Various western studies have shown that with previous caesarean section, increased risk of placenta previa, adherent placenta, and greater incidence of antepartum haemorrhage. Nonetheless, the extent to which previous caesarean delivery predisposes women to the development of placenta previa is unclear from earlier studies. Also, there are not many Indian studies regarding the association of placenta previa and previous caesarean section. This study aims to find the association between prior caesarean delivery and subsequent development of placenta previa and adherent placenta.Methods: A descriptive study was conducted on 600 antenatal women with post cesarean pregnancy in a tertiary care centre. Similar number of women with previous normal delivery was included in comparison group and placental location was studied. Those patients with previous caesarean were further divided into those with placenta previa and without previa to study the determinants of previa in those with previous caesarean section.Results: Placenta previa was found in 2.8% of the study group compared to 1.2% of comparison group. Adherent placenta was found only in post caesarean group. In the post caesarean group, the incidence of anterior previa was 41.2% compared to posterior previa (29.3%). In those with post cesarean pregnancy, determinants of placenta previa found were multiparity (35.3%), previous history of abortions (35%), multiple previous caesarean sections (29.4%), interpregnancy interval <2 years (35.29%).Conclusions: In post cesarean pregnancy, the risk of placenta previa is 2 times compared to those with a previous normal delivery. Anterior previa occurred with sufficient frequency in post-caesarean pregnancy to warrant ultrasonic placentography prior to surgical entry into lower segment. When the combination of previous caesarean and placenta previa occurs the risk of adherent placenta is 17.6%

Simulation Study of HEMT Structures With HfO2 Cap Layer For Mitigating Inverse Piezoelectric Effect Related Device Failures

The Inverse Piezoelectric Effect (IPE) is thought to contribute to possible device failure of GaN High Electron Mobility Transistors (HEMTs). Here we focus on a simulation study to probe the possible mitigation of the IPE by reducing the internal electric fields and related elastic energy through the use of high-k materials. Inclusion of a HfO2 cap layer above the AlGaN barrier particularly with a partial mesa structure is shown to have potential advantages. Simulations reveal even greater reductions in the internal electric fields by using field plates in concert with high-k oxide

Habitat ecology and food and feeding of the herring bow crab Varuna litterata (Fabricius, 1798) of Cochin backwaters, Kerala, India

Habitat ecology and food and feeding of the herring bow crab, Varuna litterata of Cochin Backwaters, Kerala, India were investigated for a period of one year (April 2011-March 2012). Among the 15 stations surveyed, the crabs were found to occur only in 4 stations, which had a close proximity to the sea. Sediment analysis of the stations revealed that the substratum of these stations is sandy in nature and is rich in organic carbon content (0.79% to 1.07%). These estuarine crabs is euryhaline and are found to be distributed in areas with a sandy substratum, higher organic carbon content and more tidal influx. The stomach contents analysis of crabs examined showed that their diet included crustacean remains, plants, sand and debris, fishes, miscellaneous group and unidentified matter. In adults and sub-adults, crustaceans formed the dominant food group, while in juveniles, sand and debris formed the dominant group. From the present study, V. litterata was found to be a predatory omnivore capable of ingesting both animal and plant tissues

CBDC: EMPIRICAL STUDY ON DETERMINANTS OF CBDC USAGE PURPOSE AMONG CONSUMERS

Abstract The initiative from the government of India in making India into a digitally vibrant nation is highly admirable. India economic growth over the decade is raising at higher rate, it due to adoption of digitalization in every part of economy from banking, business, and international payment. Banks are updating according to needs and demands of the consumers providing amenable services at finger tips of the consumers. From small vendor to high business transitions are carry forward with the help of digital transition or digital currency. The primary objective of the study is determining CBDC usage purpose among consumers. The study used convenient sampling method and covered 160 banking consumers using digital banking. The findings of the study show Determinants of CBDC Usage Purpose among Consumers have been segregated into two dominant dimensions namely Payment Terminal and Financial Statibility Factor which dealing with cost of using online banking, usage of the same at all branches both nationally and internationally and security of the banking. The second factor is Usage and Payment Efficiency Factor which deals with usage of the digital banking, efficiency of the payment over the geographical location and ability of use the same without internet connections. Consumer Perception on CBDC have been segregated into two dominant dimensions namely Expectancy and Performance Factor which deals with expectancy of the consumers over usage of CBDC, knowledge on using digital currency and trust over the banking while using digital currency. A positive and significant impact of Consumer Perception on CBDC on Determinants of CBDC Usage Purpose among Consumers has been identified

Correlation between epicardial fat pad thickness and acute coronary syndrome

BACKGROUND: Visceral adipose tissue (VAT) has significant association with development of metabolic syndrome and coronary artery disease. It could be due to release of free fatty acids which causes direct lipotoxicity and also due to release of various proinflammatory and proatherogenic cytokines that affect endothelial function. Epicardial fat which is the visceral fat deposit located between the heart and the pericardium correlates well with the presence of visceral adipose tissue. AIM OF THE STUDY: To evaluate the correlation between epicardial fat pad thickness measured by echocardiography and incidence of acute coronary syndrome. METHODOLOGY: This is a case control study which include a study group of 53 patients admitted with acute coronary syndrome at Thanjavur Medical College and a control group of 53 peoples who are not a known case of CAD (Coronary Artery Disease). Epicardial fat pad thickness was measured using transthoracic echocardiogram. RESULTS: Increased epicardial fat pad thickness was found to be significantly associated with acute coronary syndrome. Older age group, increased waist hip ratio, Body mass index, increased fasting blood sugar level and increased total cholesterol level were found to be significantly associated with acute coronary syndrome. CONCLUSION: Epicardial fat pad thickness has a positive correlation with metabolic syndrome and cardiovascular risk and is a more sensitive assessment of body fat distribution. Transthoracic echocardiography provided a relatively inexpensive means to measure and quantify epicardial fat. It is not a time consuming and only adds minimally to the time required for regular echocardiographic procedure. It can used for screening of metabolic syndrome along with other routine tests like body mass index and waist hip ratio

Case report on laurence moon biedyl syndrome

Laurence moon Biedyl syndrome is a rare autosomal recessive condition with a wide spectrum of clinical features. The accepted major criteria for diagnosis include retinal dystrophy, obesity, Polydactyly, male hypogonadism, mental retardation and renal dysfunction. We have presented a 36 year old male patient exhibiting characteristic features of Laurence moon Biedyl syndrome and then the literature is reviewed

To Determine the Clinical Efficacy of Diode Laser (980 Nm) Therapy as an Adjunct to Nonsurgical Periodontal Therapy in the Treatment of Generalized Chronic Periodontitis: A Randomized Controlled Clinical Trial

BACKGROUND: The basic approach to the treatment of periodontal disease has always been the removal of supra gingival and sub gingival deposits, which is primarily achieved by scaling and root planing. However, conventional periodontal therapy does not completely eliminate bacterial products from periodontal pockets which might lead to the failure of therapy in many situations. The present study was to evaluate the clinical and biochemical effect of Diode laser (980 nm) therapy as an adjunct to Scaling and root planing in patients with generalized chronic periodontitis. MATERIALS AND METHODS: Twenty patients with generalized chronic periodontitis were included in this study. Two quadrants in the maxillary arch were selected randomly for each patient. Test sites were treated with scaling and root planing along with multiple applications of diode laser (980 nm) and the control sites were treated with scaling and root planing alone. Clinical parameters and GCF IL-1β levels were assessed at baseline and at 3 months after treatment. RESULT: Both Scaling and root planing and adjunctive use of diode laser (980 nm) along with scaling and root planing was found to be effective in the treatment of chronic periodontitis. However the combination therapy provided a statistically significant improvement in the clinical outcome and the levels of gingival crevicular fluid IL-1β than the use of scaling and root planing alone. CONCLUSION: Compared to Scaling and root planing alone multiple application of diode laser (980 nm) along with scaling and root planing was effective in the treatment of chronic periodontitis and can be used as an adjunct to nonsurgical therapy

DEVELOPMENT OF A PROLONGD RELEASE GASTRORETENTIVE TABLET FORMULATION OF LEVOFLOXACIN

Objective: The present investigation concerns the design and evaluation of floating tablets of Levofloxacin, which after oral administration prolong the gastric residence time and increased drug bioavailability. Methods: Levofloxacin is a synthetic chemotherapeutic agent used to treat severe or life-threatening bacterial infections. The present work was designed to formulate floating tablet of Levofloxacin with various swelling agents. Formulations were prepared using various concentrations of Guar gum, Carbopol, hydroxy propyl methyl cellulose and Ethyl Cellulose by direct compression technique. The selected batches were evaluated for various parameters like weight variation, thickness, diameter, friability, floating lag time, duration of floating, swelling index, content uniformity and in-vitro drug release. The data obtained from the in-vitro dissolution studies of optimized batch F7 were fitted in different models. Results: The optimized formulation F7 showed 99.25% drug content, floating lag time of 10 min and swelling index of 40%. Drug release mechanism was found to be zero order along with higuchi release kinetics exhibiting diffusion along with dissolution of the drug from the tablet by non fickian mechanism. Conclusion: Levofloxacin floating tablets exhibited increased gastric residence time, there by improved bioavailability and therapeutic effect of the drug. Keywords: Levofloxacin, Gastro retentive, Guar gum, Hydroxy propyl methyl cellulose, Ethyl Cellulose, Carbopol