The results of a recent study of fluid-borne waves on plates with one-sided fluid loading [M. Talmant, Ph.D. thesis, University of Paris VII (1987)] allow the prediction of the corresponding waves and their resonances (as well as of the Lamb-wave resonances) on thin submerged spherical shells. Similar fluid waves and the ensuing ‘‘bifurcation’’ in the dispersion curves of the first antisymmetric vibration mode on cylindrical shells were previously described [J. V. Subrahmanyam, Ph.D. thesis, Catholic University of America (1983); J. L. Rousselot, Acustica 58, 291 (1985)] and the fluid waves were observed by Talmant et al. [J. Acoust. Soc. Am. 84, 681–688 (1988)]. The resonances predicted by the plate model for spherical shells are confirmed here by comparison with scattering cross-section calculations using surface integral equation radiation and scattering (SIERRAS) and T-matrix codes.

Background Engaging partners in the planning, implementation, and evaluation of cancer education programs is critical for improving the health of our communities. A two-year pilot education intervention on prostate cancer decision making and participation in medical research was funded by the National Cancer Institute. The partnership involving community members and clinical staff at a cancer center was used to develop recruitment strategies and plan for the implementation of the intervention with African-American (AA) middle-age and older men and female family members. We assessed partners’ perceptions of this community-academic-clinical research collaboration. Methods In year 2, eight project advisory council members were selected among existing partners and year 1 participants to serve as a formal committee. Council members were required to participate in telephone and in-person meetings and actively support recruitment/implementation efforts. At the conclusion of the project, 20 individuals (all clinical and community partners, including the eight advisory council members) were invited to complete a survey to assess their perceived impact of the collaboration on the community and provide suggestions for future collaborations. Results Most partners agreed that their organization benefitted from the collaboration and that various aspects of the advisory council process (e.g., both formal and informal communication) worked well. The most noted accomplishment of the partnership related to leveraging the collaboration to make men more knowledgeable about prostate cancer decision making. Suggested improvements for future collaborations included distributing more frequent updates regarding project successes. Conclusions Evaluating partners’ perceptions of this collaboration provided important recommendations for future planning, implementation, and evaluation of community-based cancer education programs.

Various surface wave modes may exist on solid elastic cylinders imbedded in a fluid. They fall into two classes, having velocities close to either the wave speed in the fluid (Stoneley- and Franz-type modes), or to the bulk wave speeds in the solid (Rayleigh- and Whispering Gallery-type modes). Using analytic and numerical methods, we present here a discussion of the modes of the first class, as well as of the Rayleigh mode. In the limit of infinite cylinder radius, the wavenumbers of the Rayleigh and Stoneley modes tend towards those of the Rayleigh and Stoneley waves on a flat elastic half-space, while the Franz-mode wavenumbers tend towards the wavenumber of sound in the ambient fluid. The sheet structure of the elastic surface waves is discussed in an appendix. Subject Classification: 35.54; 40.26;30.50;20.35.

We present an analytic and numerical study of Whispering Gallery-type surface- wave modes on solid elastic cylinders imbedded in a fluid. The complex wave numbers of these waves are obtained for the case of high frequencies (ka≳15), including both their attenuation and dispersion curves for the phase velocities. It is shown that there are two different groups of Whispering Gallery modes whose wave numbers in the limit of infinite frequency or infinite cylinder radius approach the corresponding wave numbers of compressional and shear bulk waves in the cylinder material. Subject Classification: [43]40.20; [43]30.50; [43]40.55; [43]20.15; [43]35.54.

A rudimentary statistical energy analysis (SEA) of a structural fuzzy reveals that an adjunct structure, i.e., the ‘‘fuzz’’ in a structural fuzzy, attached to a master structure for the purpose of increasing the loss factor of the union, in the range of frequency of concern, is required to satisfy three design criteria. A brief statement of these design criteria is made. An analytical rendition is also presented to give the statement qualitative definition and assessment. Possible noise control issues impacting the performance of structural fuzzies are raised.