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Einstein's "Kyoto Lecture": The Michelson-Morley Experiment

Einstein's "Kyoto Lecture": The Michelson-Morley Experiment

MODIFICATION AND REPLICATION OF THE ATLAS (ADOLESCENTS TRAINING AND LEARNING TO AVOID STEROIDS) PROGRAM.

521 We have previously shown the ATLAS (Adolescents Training and Learning To Avoid Steroids) program effective in reducing young athletes' intent to use anabolic steroids (AS) and promoting healthy behaviors. During the initial implementation year, seven classroom sessions were facilitated by coaches and student team leaders. During the third year, implementation time was reduced to 5 classroom sessions and facilitated by research staff and student team leaders. Despite the shortened version, the initial cohort and Year 03 athletes new to the intervention participated in a curriculum with the same topics: sports nutrition and strength training alternatives to AS use; drug knowledge; refusal skill role play; and anti-AS media campaigns. Pre- and post-intervention questionnaires assessed AS use risk factors, intentions and use of AS, and dietary and exercise habits. Both years' intervention included weight training sessions taught by research staff strength trainers. After the modified intervention, results revealed that the program improved similar risk and protective factors found to be enhanced with the initial cohort's intervention. Compared to control athletes, ATLAS participants in the modified program reported lower intent to use AS, greater knowledge of supplements and exercise, improved understanding of the effects of marijuana and AS, greater belief in peers as an information source, and more negative feelings toward AS users (all p<.05). In addition, positive perceived changes in body image and self-esteem were present (p<.05) among experimental participants. The ATLAS program, modified with a 29% reduction in classroom time and having a non-school research staff member facilitate curriculum delivery, effectively reduces risk factors & desire to use AS while improving nutrition and exercise behaviors. ATLAS is effective, reproducible, and can be facilitated by non-school educators.

Perspectives and challenges of physical organic chemistry

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Model-based control of a robot manipulator

Model-Based Control of a Robot Manipulator presents the first integrated treatment of many of the most important recent developments in using detailed dynamic models of robots to improve their control. The authors' work on automatic identification of kinematic and dynamic parameters, feedforward position control, stability in force control, and trajectory learning has significant implications for improving performance in future robot systems. All of the main ideas discussed in this book have been validated by experiments on a direct-drive robot arm.The book addresses the issues of building accurate robot models and of applying them for high performance control. It first describes how three sets of models - the kinematic model of the links and the inertial models of the links and of rigid-body loads - can be obtained automatically using experimental data. These models are then incorporated into position control, single trajectory learning, and force control. The MIT Serial Link Direct Drive Arm, on which these models were developed and applied to control, is one of the few manipulators currently suitable for testing such concepts.Contents: Introduction. Direct Drive Arms. Kinematic Calibration. Estimation of Load Inertial Parameters. Estimation of Link Inertial Parameters. Feedforward and Computed Torque Control. Model-Based Robot Learning. Dynamic Stability Issues in Force Control. Kinematic Stability Issues in Force Control. Conclusion.Chae An is Research Staff Member, IBM T.J. Watson Research Center, Christopher Atkeson is an Assistant Professor and John Hollerbach is an Associate Professor in the MIT Department of Brain and Cognitive Sciences and the MIT Artificial Intelligence Laboratory. Model-Based Control of a Robot Manipulator is included in the Artificial Intelligence Series edited by Patrick Winston and Michael Brady.

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Scanning tunneling microscopy—from birth to adolescence

We present here the historic development of Scanning Tunneling Microscopy (STM); the physical and technical aspects have already been covered in a few recent reviews and two conference proceedings' and many others are expected to follow in the near future. A technical summary is given by the sequence of figures, which stands alone. Our narrative is by no means a recommendation of how research should be done; it simply reflects what we thought, how we acted, and what we felt. However, it would certainly be gratifying if it encouraged a more relaxed attitude towards doing science. Perhaps we were fortunate in having common training in superconductivity, a field which radiates beauty and elegance. For scanning tunneling microscopy, we brought along some experience in tunneling (Binnig and Hoenig, 1978) and angstroms (Rohrer, 1960), but none in microscopy or surface science. This probably gave us the courage and lightheartedness to start something which should have worked in principle, as we were so often told. After havn on another occasion, I had been involved for a short time with tunneling between very small metallic grains in bistable resistors, and later I matched my colleagues struggle with tolerance problems in the fabrication of Josephson junctions. So the local study of growth and electrical properties of thin insulating layers appeared to me an interesting problem, and I was given the opportunity to hire a new research staff member, Gerd Binnig, who found it interesting, too, and accepted the offer. Incidentally, Gerd and I would have missed each other, had it not been for K. Alex Muller,

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Europe and the Idea of Common Security

Click to increase image sizeClick to decrease image size Additional informationNotes on contributorsGerhard WettigGerhard Wettig is a senior research staff member at the Federal Institute for Eastern and International Studies in Cologne, coeditor of the West German foreign policy journal Aussenpolitik, and currently also a research fellow at the Woodrow Wilson Center in Washington, D.C.

Location, Agricultural Risk, and Farm Income Diversification

Geographical AnalysisVolume 15, Issue 3 p. 231-246 Free Access Location, Agricultural Risk, and Farm Income Diversification Donald W. Jones, Donald W. Jones Donald W. Jones is research staff member, Energy Division (Resource Analysis Group) of Oak Ridge National Laboratory. I have benefited from the comments of participants in the Economic History Workshop, Department of Economics, University of Chicago. Joseph D. Reid, Jr., Department of Economics, Virginia Polytechnic Institute and State University, read and offered extensive comments on an earlier version of this paper. Charles Morrow-Jones, Department of Geography, Ohio State University, also offered useful suggestions. Responsibility for remaining shortcomings of the paper is mine.Search for more papers by this author Donald W. Jones, Donald W. Jones Donald W. Jones is research staff member, Energy Division (Resource Analysis Group) of Oak Ridge National Laboratory. I have benefited from the comments of participants in the Economic History Workshop, Department of Economics, University of Chicago. Joseph D. Reid, Jr., Department of Economics, Virginia Polytechnic Institute and State University, read and offered extensive comments on an earlier version of this paper. Charles Morrow-Jones, Department of Geography, Ohio State University, also offered useful suggestions. Responsibility for remaining shortcomings of the paper is mine.Search for more papers by this author First published: July 1983 https://doi.org/10.1111/j.1538-4632.1983.tb00784.xCitations: 10 Donald W. Jones is research staff member, Energy Division (Resource Analysis Group) of Oak Ridge National Laboratory. I have benefited from the comments of participants in the Economic History Workshop, Department of Economics, University of Chicago. Joseph D. Reid, Jr., Department of Economics, Virginia Polytechnic Institute and State University, read and offered extensive comments on an earlier version of this paper. Charles Morrow-Jones, Department of Geography, Ohio State University, also offered useful suggestions. Responsibility for remaining shortcomings of the paper is mine. AboutPDF ToolsRequest permissionExport citationAdd to favoritesTrack citation ShareShare Give accessShare full text accessShare full-text accessPlease review our Terms and Conditions of Use and check box below to share full-text version of article.I have read and accept the Wiley Online Library Terms and Conditions of UseShareable LinkUse the link below to share a full-text version of this article with your friends and colleagues. Learn more.Copy URL Share a linkShare onFacebookTwitterLinked InRedditWechat Citing Literature Volume15, Issue3July 1983Pages 231-246 ReferencesRelatedInformation

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