A Review :Implementation of Reed Solomon Error Correction & Detec-tion For Wireless Network 802.16

The reed Solomon (255,239) are error-correcting & detecting code. Reed-Solomon codes are the most frequently used digital error control. It is also called as forword error code. The main part of reed-Solomon encoder is the linear feedback shift register that is implemented using VHDL A pipelined RS decoders is proposed of reducing the hardware complexity use the pipelined GFmultiplier in the syndrome computation block, KES block, Forney block, Chien search block and error correction block for provides low com-plexity the extended inversion less Massey-Berlekamp algorithm is used. The extended inversion less Massey-Berlekamp algorithm overcomes both the error locator polynomial and the error evaluator polynomial at the same time

A Survey on Anonymous On-Demand Routing Protocols for MANETs

At present Mobile ad hoc networks (MANET) is used in many real time applications and hence such networks are vulnerable to different kinds of security threats. MANET networks suffered more from security attacks due to use of free wireless communication frequency spectrum and dynamic topology. Therefore it becomes very tough to provide security to MANET under different adversarial environments like battlefields. For MANET, anonymous communications are vital under the adversarial environments, in which the identification of nodes as well as routes is replaced by pseudonyms or random numbers for the purpose of protection. There are many protocols presented for anonymous communication security for MANET, which hide node identities and routes from exterior observers in order to provide anonymity protection. This paper presents review of various anonymous on demand routing protocols

Seed size and its influence on germination, seedling growth and biomass in Saraca asoca (Roxb). De Wilde, critically endangered tree species of Western ghats, India

Saraca asoca (Roxb). De Wilde is one of the high traded medicinal plant species of India. There is a huge demand for bark of this species both in domestic and international markets. There is a demand for quality planting materials for large scale plantation. Forest department and farmers have already initiated captive plantation of this species. Several factors affect the seedling quality in nursery. Seed grading is one among them. The present study aims at understand the influence of seed size on seed germination and seedling vigour in S. asoca. Association study showed that seed length was positively correlated with seed weight (r= 0.887), seed width (r=0.697) and thickness (r=0.621). Therefore, seed length was used to categorize seedlot into small (< 30.0 mm), medium (30.1-40.0 mm) and large (> 40.1 mm) seeds. Result showed that larger seeds produced maximum germination (86.7%) as compared to smaller seeds (45.0%). Moreover, larger seeds attained higher collar diameter (3.34 mm) and dry biomass viz., leaf biomass (0.91 g), shoot biomass (0.31 g), root biomass (0.95 g) and entire seedling biomass (2.17 g) as compared to smaller seeds. Seedlings raised from medium seeds were at par with larger seeds in most of the traits. Therefore, it is suggested to use seedlot having > 30 mm length, preferably larger seeds (> 40 mm) in the nursery for better establishment of quality seedlings

Beta-lactam plus Macrolide vs Fluoroquinolone for Empiric Therapy of Hospitalized Patients with CAP: Results from the University of Louisville Pneumonia Study

Background Current guidelines recommend a β-lactam plus a macrolide or fluoroquinolone monotherapy as initial empiric antibiotic therapy for treatment of patients hospitalized with community-acquired pneumonia (CAP). Multiple studies have shown different results comparing the two regimens for the treatment of CAP. Our objective, in a city-wide prospective study, was to compare outcomes among hospitalized patients with CAP who received empiric treatment either with a β-lactam plus a macrolide or fluoroquinolone monotherapy. Methods This was a propensity score matched case-control study of the University of Louisville Pneumonia Study. It was a prospective population-based cohort study of all hospitalized adults with CAP. Patients were divided into two groups and propensity score matched based on empiric therapy; a β-lactam plus a macrolide compared to fluoroquinolone monotherapy. Study outcomes were time to clinical stability, length of stay, and in-hospital, 30-day and 1-year mortality. Stratified Cox proportional hazards regression was performed to analyze continuous variable differences between groups. Conditional logistic regression was performed to analyze dichotomous variable differences in mortality. Results An association was not found between the two groups for time to clinical stability (aHR: 1.06; 95% CI: 0.93-1.22), length of stay (aHR: 1.14; 95% CI: 0.99-1.32) or mortality. Conclusion The present study did not show any difference in short or long-term outcomes for hospitalized patients with CAP who were treated with either a β-lactam plus a macrolide or fluoroquinolone monotherapy. Hence, our study does not support the superiority of one treatment over other

Seed traits, germination pattern and seedling vigour in Antiaris toxicaria (Pers.) Lesch., a rare plant species of Western ghats

Antiaris toxicaria (Pers.) Lesch. is one of the species of ecological importance distributed in Western Ghats and other parts. This species is considered as one of the threatened species and it needs conservation. The information on fruit and seed trait variation and germination attributes are scanty. Such database is useful for afforestation programme as well as for augmentation of rare plant species in their natural habitat. For the present study, 10 open pollinated trees distributed in Devade forest of Sakharpa were marked. April month was the peak fruiting period and healthy fruits were collected from the ground. Fruit and seed traits were found to be varied significantly among trees, where fruit length ranged from 21.50 to 24.71 mm and fruit weight ranged from 3.64 to 4.07 g. Similarly, seeds length (14.01 -15.09 mm), seed thickness (12.15 -13.04 mm) and seed weight (1.20 – 1.57g) also showed significant variation among 10 trees. Field observation showed that there was a poor regeneration in this species at studied site. Therefore, germination study was conducted at nursery condition by imposing several pretreatments. Among eight treatments including control, soaking seeds in water for 24 hrs (T2) resulted in better germination of 38.0% as compared to others. In T2 seed germination started at 16 days after sowing and completed within 42 days. Potting mixture of red soil with saw dust in 30:70 ratio improved seed germination about 20 % as compared to red soil media

Association of Urine Levels of C-Reactive Protein with Clinical Outcomes in Patients with Pneumonia: A Pilot Study

Finding relevant biomarkers as a potential predictor of severity for patients hospitalized with community acquired pneumonia (CAP), in addition to the clinical scoring system, could advance progress towards more effective patient management. The inflammatory marker, C-reactive protein (CRP), which is elevated in the pathogenesis of many infectious diseases, may be a key biomarker target for CAP. Previous studies have shown that serum CRP may be a useful diagnostic marker for pneumonia in hospitalized patients with acute respiratory symptoms. The main aims of this study were to determine the correlation between serum and urine CRP levels in hospitalized patients with CAP, and any correlation with patient outcomes. Our laboratory employed a commercially available human high sensitive CRP ELISA kit to check the level of CRP in the corresponding patient urine sample. The results showed that there was a positive correlation between patient serum and urine CRP levels. In addition, we showed the correlation of urine CRP levels with certain patient comorbidities, time to clinical stability, length of patient hospital stay, and mortality

Covid-19 Detection For CT-scan Images Using Transfer Learning Models

COVID-19 is a respiratory illness caused by a virus called SARS-CoV-2 which affected around 455 million people around the world. CT-scan is a medical imaging technique that uses X-rays to create detailed images of the body and which can be used to detect many respiratory diseases. Transfer learning models are a type of machine learning model that are trained on a large dataset of images and which can be used for their already trained ability to extract features from image in other tasks. They can then be used to classify new images with similar features.This paper presents a study of different transfer learning models for the task of classifying chest X-ray images into three classes: COVID-19, pneumonia, and normal. The study was implemented using Python and the dataset used was the COVID-19 Chest X-ray Dataset. The train-test split used was 0.2–0.8. The parameters used to test the models were the precision, recall, accuracy, F1 score, and Matthew’s correlation score. Other than these, different optimizers were also compared such as ADAM, SGD with different learning rates of 0.01, 0.001, and 0.0001.The models used in this study are EfficientNetB0, EfficientNetB7, VGG16, and InceptionV3. Out of these models, the most effective model was the EfficientNetB0 model, which achieved an accuracy of 98.6%. This study provides valuable insights into the use of transfer learning for medical image analysis. The results suggest that transfer learning can be used to develop accurate and efficient models that can be used as a secondary option for the diagnosis of COVID-19 using chest X-ray images

Characteristics and Clinical Outcomes of Hospitalized Patients with Community-Acquired Pneumonia who are Active Intravenous Drug Users

Background: Intravenous drug users (IVDU) have a 10-fold increased risk of community-acquired pneumonia (CAP) compared to the general population. There is scarce data available evaluating the clinical outcomes of IVDU hospitalized patients with CAP and that data mostly focuses on mortality. The objective of this study was to evaluate the clinical characteristics, incidence and outcomes of hospitalized patients with CAP in active intravenous drug users in Louisville, Kentucky. Methods: This was a secondary data analysis of the University of Louisville Pneumonia study. IVDU patients were propensity score matched to a non-IVDU group. Study outcomes were time to clinical stability (TCS), length of stay (LOS), mortality at discharge, and mortality at 1 year. Stratified Cox proportional hazard regression was performed to evaluate TCS and LOS. Conditional logistic regression was performed to evaluate mortality. Statistical significance was defined as p ≤ 0.05. Results:From a total of 8,284 hospitalized patients with CAP reviewed, 113 patients were matched per group. Median (IQR) age for the IVDU was 33 (28-43) versus 36 (28-48) for the matched non-IVDU group (p Conclusions: This study shows that active IVDU hospitalized patients with CAP do not have worse outcomes when compared with non-IVDU hospitalized patients with CAP. Patients in the IVDU group were significantly younger. Since severity scores commonly used are heavily influenced by age, these will not likely be useful tools to assist the physicians with the site for care and management

Comparing Outcomes for Community-Acquired Pneumonia Between Females and Males: Results from the University of Louisville Pneumonia Study

Introduction: Male sex is currently considered to be a risk factor for worsened community-acquired pneumonia (CAP) outcomes compared to female sex; hence, female sex equates to a lower score on the Pneumonia Severity Index. There is no recent update on sex-based outcomes of patients with CAP. The objective of this study was to compare the outcomes of CAP between females and males. Methods: This was a secondary analysis of the University of Louisville Pneumonia Study database. It was a prospective population-based cohort study of all hospitalized adults with CAP who were residents of Jefferson County in the city of Louisville, Kentucky. The study included data from June 1, 2014, to May 31, 2016, and data from October 1, 2016, to May 31, 2017. The study population was divided into two groups: females and males. Results: Female patients had a 13% lower mortality at one year compared to males (aHR 1.13 [95% CI 1.05–1.23], P=0.002). There was no significant difference in mortality between the two groups during hospitalization or at 30-day or six-month follow-up. The median time to discharge for both female and male patients hospitalized with CAP was five days (interquartile range [IQR] 3, 9 days). The median time to clinical stability for both female and male patients hospitalized with CAP was two days (IQR 1, 4 days). Conclusion: This study shows that female patients had significantly lower one-year mortality compared to males. There was no significant difference between females and males in time to clinical stability or length of stay. Further investigation is needed to examine whether risk factors associated with female and male sex predict outcomes among hospitalized patients due to CAP