Based on B. P. Lathi's widely used book, Linear Systems and Signals, it features additional applications to communications, controls, and filtering as well as new chapters on analog and digital filters and digital signal processing. Lathi emphasizes the physical appreciation of concepts rather than the mere mathematical manipulation of symbols. Avoiding the tendency to treat engineering as a branch of applied mathematics, he uses mathematics to enhance physical and intuitive understanding of concepts, instead of employing it only to prove axiomatic theory. Theoretical results are supported by carefully chosen examples and analogies, allowing students to intuitively discover meaning for themselves.

    In The Toaster Project, Thwaites asks what lies behind the smooth buttons on a mobile phone or the cushioned soles of running sneakers. What is involved in extracting and processing materials? To answer these questions, Thwaites set out to construct, from scratch, one of the most commonplace appliances in our kitchens today: a toaster. The Toaster Project takes the reader on Thwaites s journey from dismantling the cheapest toaster he can find in London to researching how to smelt metal in a fifteenth-century treatise. His incisive restrictions all parts of the toaster must be made from scratch and Thwaites had to make the toaster himself made his task difficult, but not impossible. It took nine months and cost 250 times more than the toaster he bought at the store. In the end, Thwaites reveals the true ingredients in the products we use every day. Most interesting is not the final creation but the lesson learned. The Toaster Project helps us reflect on the costs and perils of our cheap consumer culture and the ridiculousness of churning out millions of toasters and other products at the expense of the environment. If products were designed more efficiently, with fewer parts that are easier to recycle, we would end up with objects that last longer and we would generate less waste altogether. Foreword by David Crowley, head of critical writing at the Royal College of Art and curator at the Victoria and Albert Museum.

    While progressive political movements, including the Marxist and feminist movements, have fought for equal pay, better work conditions, and the recognition of unpaid work as a valued form of labor, even they have tended to accept work as a naturalized or inevitable activity. Weeks argues that in taking work as a given, we have “depoliticized” it, or removed it from the realm of political critique. Employment is now largely privatized, and work-based activism in the United States has atrophied. We have accepted waged work as the primary mechanism for income distribution, as an ethical obligation, and as a means of defining ourselves and others as social and political subjects. Taking up Marxist and feminist critiques, Weeks proposes a postwork society that would allow people to be productive and creative rather than relentlessly bound to the employment relation. Work, she contends, is a legitimate, even crucial, subject for political theory.

    Over the past two centuries or so, capitalism has undergone continual change - economic cycles that lurch from boom to bust - and has always emerged transformed and strengthened. Surveying this turbulent history, Paul Mason wonders whether today we are on the brink of a change so big, so profound, that this time capitalism itself, the immensely complex system by which entire societies function, has reached its limits and is changing into something wholly new.At the heart of this change is information technology: a revolution that, as Mason shows, has the potential to reshape utterly our familiar notions of work, production and value; and to destroy an economy based on markets and private ownership - in fact, he contends, it is already doing so. Almost unnoticed, in the niches and hollows of the market system, whole swathes of economic life are changing.. Goods and services that no longer respond to the dictates of neoliberalism are appearing, from parallel currencies and time banks, to cooperatives and self-managed online spaces. Vast numbers of people are changing their behaviour, discovering new forms of ownership, lending and doing business that are distinct from, and contrary to, the current system of state-backed corporate capitalism.In this groundbreaking book Mason shows how, from the ashes of the recent financial crisis, we have the chance to create a more socially just and sustainable global economy. Moving beyond capitalism, he shows, is no longer a utopian dream. This is the first time in human history in which, equipped with an understanding of what is happening around us, we can predict and shape, rather than simply react to, seismic change.

    Guns, which lead to so much death, work exactly as they’re designed to work. And every time we “improve” their design, they get better at killing. Facebook’s privacy settings, which have outed gay teens to their conservative parents, are working exactly as designed. Their “real names” iniative, which makes it easier for stalkers to re-find their victims, is working exactly as designed. Twitter’s toxicity and lack of civil discourse is working exactly as it’s designed to work.The world is working exactly as designed. And it’s not working very well. Which means we need to do a better job of designing it. Design is a craft with an amazing amount of power. The power to choose. The power to influence. As designers, we need to see ourselves as gatekeepers of what we are bringing into the world, and what we choose not to bring into the world. Design is a craft with responsibility. The responsibility to help create a better world for all.Design is also a craft with a lot of blood on its hands. Every cigarette ad is on us. Every gun is on us. Every ballot that a voter cannot understand is on us. Every time social network’s interface allows a stalker to find their victim, that’s on us. The monsters we unleash into the world will carry your name.This book will make you see that design is a political act. What we choose to design is a political act. Who we choose to work for is a political act. Who we choose to work with is a political act. And, most importantly, the people we’ve excluded from these decisions is the biggest (and stupidest) political act we’ve made as a society.If you’re a designer, this book might make you angry. It should make you angry. But it will also give you the tools you need to make better decisions. You will learn how to evaluate the potential benefits and harm of what you’re working on. You’ll learn how to present your concerns. You’ll learn the importance of building and working with diverse teams who can approach problems from multiple points-of-view. You’ll learn how to make a case using data and good storytelling. You’ll learn to say NO in a way that’ll make people listen. But mostly, this book will fill you with the confidence to do the job the way you always wanted to be able to do it. This book will help you understand your responsibilities.