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The chair design article presents in-depth research and discusses using both experimental and subjective methods. Comforts measures of office chairs include mathematical correlation and pressure mapping data from several studies. The papers have a wealth of ergonomic data, giving a detailed plan to design office chairs with working hours, posture, and alignment options in mind. This study is used after conducting surveys on chair comfort levels and their respective discomfort factors. The research seeks to create a blueprint to make the computer lab seats more comfortable. [ABSTRACT FROM AUTHOR]

The sudden outburst of COVID – 19 (Also known as NOVEL CARONA VIRUS) started from country CHINAand from there it had given a massive tremor to the whole world in the form of Health, Economic or Social Issues. For Decision making in Hospitals, we first need to identify the actual disease of patients and then start their medications according to the defined disease. To get the actual reading, we have focused on Radiography Lungs images and through that, we are predicting whether the particular person is suffering from COVID-19, LUNG OPACITY, or PNEUMONIA. As these diseases have common symptoms like High Fever, cold, etc. so there is a major need to identify those diseases. For the Prediction, various algorithms have been used like Neural Network, Logistic Regression, Naïve Bayes, Decision Tree, and Ada-Boost. The tool used for the prediction of these diseases is ORANGE TOOL. The GUI interface of ORANGEmakes it easy to use various Algorithms just by dragging different Algorithm icons into the main window. And then just passing it to different widgets such as prediction, Test and Score, etc. to get appropriate results. As these Diseases can spread widely, we need to identify those diseases sooner and start the medications in the more efficient and effective way possible. [ABSTRACT FROM AUTHOR]

Hydrodynamic model and coupled mode theory has been used to study parametric interactions in magnetized semiconductor plasma for nonrelativistic and relativistic electrons. Expression for nonlinear absorption coefficient and threshold pump field required to incite parametric interaction has been derived. Effects of various parameters on absorption coefficients have been plotted for both the cases. Numerical estimates were made on InSb crystal duly irradiated by 1.06 μm Nd:Yag laser at 77K.Absorption coefficient is found to be modified in both the cases and It is observed that choosing the proper values of input parameters one may achieve higher nonlinear parametric gain. [ABSTRACT FROM AUTHOR]