Research Data Management: An introduction

A training seminar delivered to MPhil Criminology/Criminological Research students at the Institute of Criminology, University of Cambridge on 2nd February 2021. The aim of this seminar was to introduce students to good research data management practices and discuss the application of these practices to criminological research

Evaluation Design and Technical Assistance Opportunities: Early Findings From the Beacon Community Program Evaluation Teams

Examines study designs, evaluation approaches, outcome measures, data sources, challenges, and technical assistance needs among sites in a project under the American Recovery and Reinvestment Act to strengthen health information technology capabilities

Empty gaps? Depleting annular regions in debris discs by secular resonance with a two-planet system

We investigate the evolution on secular time-scales of a radially extended debris disc under the influence of a system of two coplanar planets interior to the disc, showing that the secular resonances of the system can produce a depleted region in the disc by exciting the eccentricities of planetesimals. Using Laplace-Lagrange theory, we consider how the two exterior secular resonance locations, time-scales and widths depend on the masses, semi-major axes and eccentricities of the planets. In particular, we find that unless the resonances are very close to each other, one of them is very narrow and therefore unimportant for determining the observable structure of the disc. We apply these considerations to the debris disc of HD 107146, identifying combinations of the parameters of a possible unobserved two-planet system that could configure the secular resonances appropriately to reproduce the depletion observed in the disc. By performing N-body simulations of such systems, we find that planetesimal eccentricities do indeed become large near the theoretical secular resonance locations. The N-body output is post-processed to set the initial surface density profile of the disc, and to include the possible effects of collisional depletion. We find that it is possible to obtain a double-ringed disc in these simulations but not an axisymmetric one, with the inner ring having an offset whose magnitude depends on the eccentricities of the planets, and the outer ring showing spiral structure

Letter from Ben Van Raalte to A. C. Van Raalte

Ben Van Raalte, a son of Albertus and Christina Van Raalte, wrote his father saying that he had not yet received a letter from him although his mother had. Ben reported that the hired hand had run off so he had not been able to do anything about the fence. After he finishes his work in the morning, he strips wood until 4.30 p.m. and then attends evening school. Derk brings his father up-to-date on farm matters.https://digitalcommons.hope.edu/vrp_1850s/1092/thumbnail.jp

Letter from Ben Van Raalte to A. C. Van Raalte

Dr. Albertus C. Van Raalte received this letter from his son, Ben, who has joined the army. His company will soon be leaving. There was a dress parade the previous Saturday when the colonel received a beautiful sword. Ben is very upbeat about his army experience thus far.https://digitalcommons.hope.edu/vrp_1860s/1131/thumbnail.jp

Remote functionalisation via sodium alkylamidozincate intermediates : access to unusual fluorenone and pyridyl ketone reactivity patterns

Treating fluorenone or 2-benzoylpyridine with the sodium zincate [(TMEDA)center dot Na(mu-Bu-t)(mu-TMP)Zn(Bu-t)] in hexane solution, gives efficient Bu-t addition across the respective organic substrate in a highly unusual 1,6-fashion, producing isolable organometallic intermediates which can be quenched and aerobically oxidised to give 3-tert-butyl-9H-fluoren-9-one and 2-benzoyl-5-tert-butylpyridine respectively

All-Terrain Storage Surfboard Carts

All Terrain Storage consists of three mechanical engineering students: Roberto Gonzalez, Ben Kennedy, and Danny Riedeman. The goal of All Terrain Storage is to design and create two portable storage devices for the non-profit organization AmpSurf. AmpSurf helps veterans, people with disabilities, and anyone else who could be helped through adaptive surfing and other outdoor activities. Their current method of storing and transporting equipment for events is carrying it from the trailer in the parking lot through the sand onto the beach. This document will provide: a more thorough introduction to AmpSurf and the project, the objectives, background information, the iterative design process, manufacturing of the final design, and final product validation