Data for standard curve chord steel roof trusses.

In the past the Engineering Department of the structural steel company, by which the writer is employed, has been troubled with having to make a large number of preliminary steel truss designs for the purpose of estimating weights for competitive bids on structural steel building contracts. In order to eliminate this expenditure of time, a study was made of the possibility of making a standard design for curved chord steel roof trusses that would give the desired information by observation --Truss Design, page 5

Reaction as image: Comic books and American life, 1940-1955

The comic book became a mass medium during a series of defining moments in twentieth-century American history. By telling and retelling narratives of individual achievement during the Great Depression, and tales of patriotism during World War II, comic books gained a popular audience rivaling that of agenda-setting national periodicals such as Life or The Saturday Evening Post. In the first postwar decade, however, publishers experimented with themes of crime, horror, teen romance, and social satire in ways that provoked a wave of public hostility. Crusading psychiatrists, politicians, civic groups, and religious leaders led a campaign against the industry that revealed much about fundamental changes in American society. The extension of postwar prosperity to adolescent consumers was in the process of creating a youth-oriented market culture that would reshape the central traditions of American consensus. Agitation resulted in an investigation of comic books and juvenile delinquency under the auspices of the United States Senate, and the enacting of a strict censorship code that struck controversial images and stories from the pages of comic books. This containment of cultural divisions would prove temporary, but it prefigured the conflicts of the following decades

Toward a Legal History of Children as Witnesses

This essay offers a selective overview of recent trends in the historical scholarship on American childhood from the origins of the American Revolution to the early years of the Cold War. This overview of the literature has two purposes. First, it highlights recent sociocultural scholarship that presents substantive challenges to the conventional ways of understanding the history of children and the law. Second, in so doing, it points out that legal histories concerned solely with doctrinal matters can, and often do, present a limited and distorted window into the past. Instead, the essay argues that the place of children, historically, has been far more complex and contingent than many, both inside and outside the courtroom, have assumed

Chapter 11: Genome-Wide Association Studies

Genome-wide association studies (GWAS) have evolved over the last ten years into a powerful tool for investigating the genetic architecture of human disease. In this work, we review the key concepts underlying GWAS, including the architecture of common diseases, the structure of common human genetic variation, technologies for capturing genetic information, study designs, and the statistical methods used for data analysis. We also look forward to the future beyond GWAS