Wings of Their Dreams: Purdue in Flight, Second Edition

Throughout 100-plus years of flight, Purdue University has propelled unique contributions from pioneer educators, aviators, and engineers who flew balloons into the stratosphere, barnstormed the countryside, helped break the sound barrier, and left footprints in lunar soil. Wings of Their Dreams follows the flight plans and footsteps of aviation\u27s pioneers and trailblazers across the twentieth century, a path from Kitty Hawk to the Sea of Tranquility and beyond. The book reminds readers that the first and last men to land on the moon first trekked across the West Lafayette, Indiana, campus on their journeys into the heavens and history. This is the story of an aeronautic odyssey of imagination, science, engineering, technology, adventure, courage, danger, and promise. It is the story of the human spirit taking flight, entwined with Purdue\u27s legacy in aviation\u27s history.https://docs.lib.purdue.edu/purduepress_previews/1037/thumbnail.jp

Force for Change: The Class of 1950

The Class of 1950 was like none other—none other before and none since. In the fall of 1946, class members came from the cornfields of the Midwest; from the battlefields of France, Italy, and Germany; and from the jungles of the Pacific islands.They came in great numbers to university campuses throughout the United States. Some of them were grown men—twenty- and thirty-year-olds going to college on the GI Bill that guaranteed money to educate World War II veterans. Some of them were boys—eighteen-year-olds straight out of high school, competing in the classroom and on the playing fields with war-hardened men who were in a hurry to get on with life. These eighteen-year-olds were unaware that within weeks of their graduation, a war in Korea would beckon them. Young women came to campus, although in much smaller numbers than the men. Most majored in home economics. Some were looking for their “Mrs.” degree. Many worked after graduation, but only until their children were born. By the 1960s, they would return to the workplace, beginning a social movement that is still evolving today. Only a handful of African Americans came to campuses of major universities. In 1946, they found segregation and racial stereotyping, even after they had fought a war for the freedom of others. In the following years while the world was changing rapidly, civil rights moved slowly. This mixture of students blended on the U.S. campuses in the late 1940s and exploded into the world in 1950. These graduates transformed technologies developed during World War II into peacetime uses. They ushered into society everything from computers to home air-conditioning to interstate highways to the space age. They created the postwar economic boom, suburbia, and the Baby Boom. They became a force for change. A Force for Change: The Class of 1950 looks at the group of students who made up this sweeping national movement: the Purdue University Class of 1950. Members of the class tell their stories in their own words. They tell of childhood years during the Great Depression, young adult years during war, idyllic years spent at college, and years of wide-open opportunities for a generation of people who believed nothing could stop them.https://docs.lib.purdue.edu/purduepress_ebooks/1049/thumbnail.jp

Hostile Share Acquisitions and Corporate Governance: A Framework for Evaluating Antitakeover Activities

In recent years, there has been a significant increase in the number of hostile share acquisitions of American businesses. The authors examine the validity of the various defensive measures employed by target companies to defeat or deter a hostile takeover bid. They argue that antitakeover activity should not be viewed as a separate subset of legal analysis; rather, it should be analyzed according to four traditional principles of corporate governance: (1) the discretion afforded corporate management by the business judgment rule; (2) the prohibition against discriminating between members of the same class of shareholders; (3) the prohibition against shifting control from the shareholders to the board of directors for actions reserved by statute to the shareholders; and (4) the prohibition against shifting control from a majority to a minority of shareholders for decisions reserved by statute to the majority. Moreover, the authors assert that even if a court uses these principles of corporate goverance as the basis for its decision, the court\u27s analysis is still incomplete if it focuses only on the target board\u27s initial decision to resist a hostile share acquisition. Rather, a court must undertake a two-step analysis, whereby it looks first at the target board\u27s initial decision to resist the hostile takeover, and second, to the means employed by the target board to effectuate that decision

Sputtering measurements of the critical angle of channeling

Call number: LD2668 .T4 1969 J64Master of Scienc

Quantifying the Clinical Significance of Cannabis Withdrawal

Background and Aims: Questions over the clinical significance of cannabis withdrawal have hindered its inclusion as a discrete cannabis induced psychiatric condition in the Diagnostic and Statistical Manual of Mental Disorders (DSM IV). This study aims to quantify functional impairment to normal daily activities from cannabis withdrawal, and looks at the factors predicting functional impairment. In addition the study tests the influence of functional impairment from cannabis withdrawal on cannabis use during and after an abstinence attempt. Methods and Results: A volunteer sample of 49 non-treatment seeking cannabis users who met DSM-IV criteria for dependence provided daily withdrawal-related functional impairment scores during a one-week baseline phase and two weeks of monitored abstinence from cannabis with a one month follow up. Functional impairment from withdrawal symptoms was strongly associated with symptom severity (p = 0.0001). Participants with more severe cannabis dependence before the abstinence attempt reported greater functional impairment from cannabis withdrawal (p = 0.03). Relapse to cannabis use during the abstinence period was associated with greater functional impairment from a subset of withdrawal symptoms in high dependence users. Higher levels of functional impairment during the abstinence attempt predicted higher levels of cannabis use at one month follow up (p = 0.001). Conclusions: Cannabis withdrawal is clinically significant because it is associated with functional impairment to normal daily activities, as well as relapse to cannabis use. Sample size in the relapse group was small and the use of a non-treatment seeking population requires findings to be replicated in clinical samples. Tailoring treatments to target withdrawal symptoms contributing to functional impairment during a quit attempt may improve treatment outcomes

A measurement of the cosmological mass density from clustering in the 2dF Galaxy Redshift Survey

The large-scale structure in the distribution of galaxies is thought to arise from the gravitational instability of small fluctuations in the initial density field of the Universe. A key test of this hypothesis is that forming superclusters of galaxies should generate a systematic infall of other galaxies. This would be evident in the pattern of recessional velocities, causing an anisotropy in the inferred spatial clustering of galaxies. Here we report a precise measurement of this clustering, using the redshifts of more than 141,000 galaxies from the two-degree-field (2dF) galaxy redshift survey. We determine the parameter β = Ω0.6/b = 0.43 +/- 0.07, where Ω is the total mass-density parameter of the Universe and b is a measure of the `bias' of the luminous galaxies in the survey. (Bias is the difference between the clustering of visible galaxies and of the total mass, most of which is dark.) Combined with the anisotropy of the cosmic microwave background, our results favour a low-density Universe with Ω ~ 0.3

Quantifying the Clinical Significance of Cannabis Withdrawal

Background and Aims: Questions over the clinical significance of cannabis withdrawal have hindered its inclusion as a discrete cannabis induced psychiatric condition in the Diagnostic and Statistical Manual of Mental Disorders (DSM IV). This study aims to quantify functional impairment to normal daily activities from cannabis withdrawal, and looks at the factors predicting functional impairment. In addition the study tests the influence of functional impairment from cannabis withdrawal on cannabis use during and after an abstinence attempt. Methods and Results: A volunteer sample of 49 non-treatment seeking cannabis users who met DSM-IV criteria for dependence provided daily withdrawal-related functional impairment scores during a one-week baseline phase and two weeks of monitored abstinence from cannabis with a one month follow up. Functional impairment from withdrawal symptoms was strongly associated with symptom severity (p = 0.0001). Participants with more severe cannabis dependence before the abstinence attempt reported greater functional impairment from cannabis withdrawal (p = 0.03). Relapse to cannabis use during the abstinence period was associated with greater functional impairment from a subset of withdrawal symptoms in high dependence users. Higher levels of functional impairment during the abstinence attempt predicted higher levels of cannabis use at one month follow up (p = 0.001). Conclusions: Cannabis withdrawal is clinically significant because it is associated with functional impairment to normal daily activities, as well as relapse to cannabis use. Sample size in the relapse group was small and the use of a non-treatment seeking population requires findings to be replicated in clinical samples. Tailoring treatments to target withdrawal symptoms contributing to functional impairment during a quit attempt may improve treatment outcomes. © 2012 Allsop et al

Proper Orthogonal Decomposition Closure Models For Turbulent Flows: A Numerical Comparison

This paper puts forth two new closure models for the proper orthogonal decomposition reduced-order modeling of structurally dominated turbulent flows: the dynamic subgrid-scale model and the variational multiscale model. These models, which are considered state-of-the-art in large eddy simulation, together with the mixing length and the Smagorinsky closure models, are tested in the numerical simulation of a 3D turbulent flow around a circular cylinder at Re = 1,000. Two criteria are used in judging the performance of the proper orthogonal decomposition reduced-order models: the kinetic energy spectrum and the time evolution of the POD coefficients. All the numerical results are benchmarked against a direct numerical simulation. Based on these numerical results, we conclude that the dynamic subgrid-scale and the variational multiscale models perform best.Comment: 28 pages, 6 figure