Bücher von Vijay Sharma

With the rise of social media, people started sharing opinions or experiences, exchanging ideas, providing suggestions etc. by using different means of online communication. We, the human beings, like to take the opinions or suggestions of our loved ones for taking decisions in our day-to-day activities. Nowadays, online opinions are playing a central role in people decision-making process. When it comes to online scenario, these opinions can be expressed in different forms on different online environments - people use online social networks like Facebook to express their feelings in the form of a post; micro-blogging websites like Twitter provide people away to interact and share their thoughts globally in the form of a tweet; users write reviews about products or services on review platforms to share their experiences; people taking advice or leaving comment on a blog network; discussion forums provide rich content to people to have discussions on different topics of interest in the form of question/answer posts or comments;

W tym tomie przedstawiono i omówiono parametry promieniowania wspó¿osiowego zasilanego dwuzakresow¿ anten¿ mikropaskow¿ o podwójnej polaryzacji stosu dla komunikacji bezprzewodowej w pämie S i C z wykorzystaniem narz¿dzia do symulacji elektromagnetycznej IE3D (Integral Equation Three-Dimensional) oraz CST-MWS (Computer Simulation Technology Microwave Studio). Podj¿to prób¿ porównania takich parametrów anteny jak zysk, szeroko¿¿ pasma impedancyjnego i wzorzec promieniowania z obu programów elektromagnetycznych. Omówiono analiz¿ teoretyczn¿ stosu mikropaskowej anteny pakietowej, omówiono równie¿ cz¿¿¿ znanych i powszechnie stosowanych technik analizy antenowej oraz ich najwäniejsze punkty. Wykonywana jest prototypowa antena, a jej wyniki eksperymentalne w porównaniu z wynikami symulacji s¿ równie¿ przedstawiane w celu potwierdzenia oferowanego projektu. Uk¿ad konstrukcyjny daje szerokie pasmo impedancji w dwóch pasmach 3,14-4,13GHz (27,2%) o polaryzacji liniowej w pämie S oraz 6,16-7,01GHz (12,8%) o polaryzacji ko¿owej w pämie C. Zaleca si¿, aby IE3D by¿ odpowiedni w przypadku, gdy rozmiar pod¿o¿a i pod¿o¿a nie ma ogranicze¿ wymiarowych, jednak dla konfiguracji z geometri¿ o sko¿czonej wielko¿ci CST jest lepszym wyborem.

Space tourism is a very new idea that was once thought of as no more than science fiction just like visiting the moon once was also and has been left untouched, due to certain restrictions. The idea has been around for many years, even before the first rocket went into space. During the project, we researched upon the topic of space tourism and the pros and cons of developing a space tourism industry. We also planned commercial missions to sub-orbit, low earth orbit and circumnavigate the Moon. Concluding the project,the feasibility of space tourism was analyzed using SWOT model. The major changes that will come from this new industry, as well as ideas and solutions to problems that might arise from this industry were also discussed.

In this thesis leakage reduction techniques like stack forcing, multiple threshold CMOS, variable threshold CMOS are explored, that mitigate leakage in circuits, operating in the active mode at various temperatures. Also, implications of technology scaling on the choice of techniques to mitigate total leakage are closely examined. The result is guidelines for designing low-leakage circuits in nanometer technology nodes. Logic gates in the 180nm, 130nm, 100nm and 70nm technology nodes are simulated and analyzed. Here delay analysis of various logic circuits are also examined.