This book describes the step-by-step process of writing a ray tracer from scratch. Using numerous examples that illustrate the ray-tracing concept and processes in detail, the author presents a ray-tracer design and sample code that allows for extensibility, efficiency of the algorithms, and readability. Chapters begin with stated aims and include questions and exercises that a...(展开全部)

戴芙妮•米勒 是哈佛大学医学博士，著名医师，兼加州大学医学教授。同时，她还是一名颇受欢迎的作家，为《华盛顿邮报》等媒体撰写专栏文章。过去十年，她的教学与写作都在探讨生物医学和自然科学的前沿问题。 当她面临诸多患者的病症难题，无法在传统医疗找到完整且令人信服的诊疗方案时，开始关注农业生态与人体之间的联系，她深入全球各地的传统社区及农场，探寻健康与自然之间关系，并撰写了这本《重新认识身体》，开启了全新的健康理念，受到医学界广泛关注，在美国引发了一场全新的生活方式的改变。

This book will guide you through the steps of creating your own powerful ray tracer program, proceeding from simple images through advanced special effects such as soft shadows, glass and metal textures, and motion blur.

本书为公版书，为不受著作权法限制的作家、艺术家及其它人士发布的作品，供广大读者阅读交流。汇聚授权电子版权。

In Up from Slavery , Washington recounts the story of his life—from slave to educator. The early sections deal with his upbringing as a slave and his efforts to get an education. Washington details his transition from student to teacher, and outlines his own development as an educator and founder of the Tuskegee Institute in Alabama. In the final chapters of Up From Slavery ,...(展开全部)

Following on from the success of his two previous books, Remarkable Mathematicians and Remarkable Physicists, Ioan James now profiles 38 remarkable biologists from the last 400 years. The emphasis is on their varied life-stories, not on the details of their achievements, but when read in sequence their biographies, which are organised chronologically, convey in human terms some...(展开全部)

Following on from the success of his two previous books, Remarkable Mathematicians and Remarkable Physicists, Ioan James now profiles 38 remarkable biologists from the last 400 years. The emphasis is on their varied life-stories, not on the details of their achievements, but when read in sequence their biographies, which are organised chronologically, convey in human terms some...(展开全部)

Advances in qualitative methods and recent developments in the philosophy of science have led to an emphasis on explanation via reference to causal mechanisms. This book argues that the method known as process tracing is particularly well suited to developing and assessing theories about such mechanisms. The editors begin by establishing a philosophical basis for process tracin...(展开全部)

If anything marks the image, it is a deep ambivalence. Denounced as superficial, illusory, and groundless, images are at the same time attributed with exorbitant power and assigned a privileged relation to truth. Mistrusted by philosophy, forbidden and embraced by religions, manipulated as spectacleand proliferated in the media, images never cease to present their multiple aspe...(展开全部)

A humorous picture book about the adventures of a light bulb who embarks on an enlightening journey, from the acclaimed author-illustrator of Petra. At the end of the hall, near the staircase, is a closet. In that closet lives Ray, who is a light bulb. Ray spends most of his time in darkness, which is pretty boring if you don't know how to fill it. So boring that Ray usually sl...(展开全部)