Investigations for the improvement of space shuttle main engine electron beam welding equipment

Progress made in the testing, evaluation, and correction of MSFC's 7.5 kW electron beam welder in support of space shuttle main engine component welding is summarized. The objective of this project was to locate and correct the deficiencies in the welder. Some 17 areas were deficient in the 7.5 kW ERI welding system and the associated corrective action was taken to improve its operational performance. An overall improvement of 20 times the original reliability was obtained at full rated capacity after the modifications were made

The Demography of Families: A Review of Patterns and Change

The authors review demographic trends and research on families in the United States, with a special focus on the past decade. They consider the following several topics: (a) marriage and remarriage, (b) divorce, (c) cohabitation, (d) fertility, (e) same‐gender unions, (f) immigrant families, and (g) children’s living arrangements. Throughout, the authors review both overall trends and patterns as well as those by social class and race–ethnicity. The authors discuss major strands of recent research, emphasizing emerging themes and promising directions. They close with a summary of central patterns and trends and conclude that recent trends are not as uniform as they tended to be in earlier decades, making the description of family change increasingly complex.Peer Reviewedhttps://deepblue.lib.umich.edu/bitstream/2027.42/152984/1/jomf12612.pdfhttps://deepblue.lib.umich.edu/bitstream/2027.42/152984/2/jomf12612_am.pd

What We Would Have Done Differently Now That It Is Too Late

We might as well begin on a note of candor by admitting the worst error we ever made, for of all the things that we would have done differently this surely heads the list. On the errata page of volume 8 appears the note: Volume 4, p. 309, n. 1. The man wrongly identified as Robert Brown Elliott [a black man] was actually William Elliott, a white man. The letter to BTW, Apr. 25,1898, was from Rev. G. M. Elliott of Beaufort, S.C. Not only had we confused a black man with a white man and another black man, but in a display of erudition we gratuitously had mentioned a letter that Elliott-the wrong Elliott-wrote to Booker T. Washington fourteen years after our own annotation indicated his death date. And they say that dead men tell no tales. At least there were no errata in our erratum. Such a compounding of errors could only have been achieved by a committee. For most of our annotations, we are able to trace back responsibility by checking the raw data notes, but in this case these had mysteriously disappeared. It all reminds us of the famous Nast cartoon about the Tweed ring. It shows a circle of bloated politicians. The caption reads, Who Stole the People\u27s Money? Each man is pointing his finger at the man on his left. That is our worst error yet, but we still have to do the cumulative index with its infinite possibilities. Without trying to explain away an error that gross, we can only say that it is the kind of error that occurred only once, and occurred in spite of our editorial method rather than because of it. Most of the other outright errors were less egregious: misspelled names; failure to annotate at first mention-we now have a system for that; and attributing to the A. M. E. Church what should properly be credited to the A. M. E. Zion Church-there is a man in Atlanta who reads our volumes apparently for no other purpose than to catch any slighting of his church

What We Would Have Done Differently Now That It is Too Late

Without trying to explain away an error that gross, we can only say that it is the kind of error that occurred only once, and occurred in spite of our editorial method rather than because of it. Most of the other outright errors were less egregious: misspelled names; failure to annotate at it appeared in the original, though we doubt that history was changed by the omission of that particular punctuation. We would still continue to correct obvious typographical errors in typewritten or printed documents. Maybe a type does reveal something deeply hidden, but is it deeply hidden in the author or the stenographer? Only a psycho-historian can analyze all the typos of a lifetime and reach conclusions as to their psychological significance, and for that he would surely want to see the originals, to see if the typist was agitated enough to punch out all the O\u27s

The Decoupling of Marriage and Parenthood? Trends in the Timing of Marital First Births, 1945–2002

Peer Reviewedhttp://deepblue.lib.umich.edu/bitstream/2027.42/106837/1/jomf12114.pd

Interview with Jean Lamb

https://digitalcommons.providence.edu/psp470_2023/1005/thumbnail.jp

Development of targeted messages to promote smoking cessation among construction trade workers

Blue-collar workers, particularly those in the construction trades, are more likely to smoke and have less success in quitting when compared with white-collar workers. Little is known about health communication strategies that might influence this priority population. This article describes our formative work to develop targeted messages to increase participation in an existing smoking cessation program among construction workers. Using an iterative and sequential mixed-methods approach, we explored the culture, health attitudes and smoking behaviors of unionized construction workers. We used focus group and survey data to inform message development, and applied audience segmentation methods to identify potential subgroups. Among 144 current smokers, 65% reported wanting to quit smoking in the next 6 months and only 15% had heard of a union-sponsored smoking cessation program, despite widespread advertising. We tested 12 message concepts and 26 images with the target audience to evaluate perceived relevance and effectiveness. Participants responded most favorably to messages and images that emphasized family and work, although responses varied by audience segments based on age and parental status. This study is an important step towards integrating the culture of a high-risk group into targeted messages to increase participation in smoking cessation activities