Mitigating Turnover with Code Review Recommendation: Balancing Expertise, Workload, and Knowledge Distribution

Developer turnover is inevitable on software projects and leads to knowledge loss, a reduction in productivity, and an increase in defects. Mitigation strategies to deal with turnover tend to disrupt and increase workloads for developers. In this work, we suggest that through code review recommendation we can distribute knowledge and mitigate turnover with minimal impact on the development process. We evaluate review recommenders in the context of ensuring expertise during review, Expertise, reducing the review workload of the core team, CoreWorkload, and reducing the Files at Risk to turnover, FaR. We find that prior work that assigns reviewers based on file ownership concentrates knowledge on a small group of core developers increasing risk of knowledge loss from turnover by up to 65%. We propose learning and retention aware review recommenders that when combined are effective at reducing the risk of turnover by -29% but they unacceptably reduce the overall expertise during reviews by -26%. We develop the Sophia recommender that suggest experts when none of the files under review are hoarded by developers but distributes knowledge when files are at risk. In this way, we are able to simultaneously increase expertise during review with a ΔExpertise of 6%, with a negligible impact on workload of ΔCoreWorkload of 0.09%, and reduce the files at risk by ΔFaR -28%. Sophia is integrated into GitHub pull requests allowing developers to select an appropriate expert or “learner” based on the context of the review. We release the Sophia bot as well as the code and data for replication purposes

Embedding the Library into Scientific and Scholarly Communication through Knowledge Management

Knowledge management is a new role for academic research libraries that has the potential to integrate the library into scholarly and scientific communication in a significant way. Work in knowledge management is advancing in both the sciences and humanities. The Genome Data Base at the Johns Hopkins University is currently the most advanced knowledge management prototype. As part of its new Center for Knowledge Management, the University of California, San Francisco is undertaking several initiatives to create a campuswide knowledge management environment.published or submitted for publicatio

A VIEW FROM THE GROUND: A REFORM GROUP’S PERSPECTIVE ON THE ONGOING EFFORT TO ACHIEVE MERIT SELECTION OF JUDGES

This article describes the history of judicial selection in the state of Pennsylvania. It describes the judicial selection reform movement and the growth of the organization Pennsylvanians for Modern Courts ( PMC ) which devises solutions to meet the various challenges to judicial integrity in Pennsylvania. It focuses on the merit system that PMC has been trying to achieve for Pennsylvania\u27s appellate courts

Towards a Social Trust-Aware Recommender for Teachers

Fazeli, S., Drachsler, H., Brouns, F., & Sloep, P. B. (2014). Towards a Social Trust-aware Recommender for Teachers. In N. Manouselis, H. Drachsler, K. Verbert & O. C. Santos (Eds.), Recommender Systems for Technology Enhanced Learning (pp. 177-194): Springer New York.Online communities and networked learning provide teachers with social learning opportunities, allowing them to interact and collaborate with others in order to develop their personal and professional skills. However, with the large number of learning resources produced everyday, teachers need to find out what are the most suitable ones for them. In this paper, we introduce recommender systems as a potential solution to this . The setting is the Open Discovery Space (ODS) project. Unfortunately, due to the sparsity of the educational datasets most educational recommender systems cannot make accurate recommendations. To overcome this problem, we propose to enhance a trust-based recommender algorithm with social data obtained from monitoring the activities of teachers within the ODS platform. In this article, we outline the re-quirements of the ODS recommender system based on experiences reported in related TEL recommender system studies. In addition, we provide empirical ev-idence from a survey study with stakeholders of the ODS project to support the requirements identified from a literature study. Finally, we present an agenda for further research intended to find out which recommender system should ul-timately be deployed in the ODS platform.NELLL, EU 7th framework Open Discovery Spac

Midwest Transportation Consortium Annual Report, 2007-2008

The Midwest Transportation Consortium (MTC) recently completed its sixth year of operation. The MTC has become an established portion of the research and educational programs at ISU and its partner universities. The MTC continues to emphasize its primary focus of developing human capital. For example, this semester, Fall, 2005, ISU has graduate scholars in its educational program. However, we also recognize that the federal grant is an opportunity to build programs at our respective universities that continue after the U.S. DOT UTCP may end. An example of building a long lasting program is the University of Missouri – St. Louis’ (UMSL) and its development of a transportation Ph.D. program in their business college. Admittedly, this program could have been started regardless, but Dr. Ray Mundy, Director of UMSL’s Transportation Scholars Program, believes that the MTC support of the transportation educational program at UMSL was the essential component in establishing a Ph.D. program. At ISU, the MTC has been instrumental in establishing two research and outreach programs, and both have themes that are related to the MTC’s theme of “Transportation System Management and Operation.” The Center for Weather Impacts on Mobility and Safety (C-WIMS) was recently established, and the Center for Road Infrastructure Management and Operations (RIMO) is in the process of being established. The MTC has a critical role in establishing each of these two programs. As part of the on-going MTC program, we have established an effective network that promotes the education of future transportation professionals and the development of new knowledge on how to manage transportation infrastructure and services in a more sustainable manner. The MTC has a track record of developing outstanding students; these students are now becoming leaders in the private sector, government, and academia. The MTC has also supported the development of an extensive research portfolio related to sustainable transportation asset management. More research projects are in the pipeline. Finally, the MTC has dedicated itself to the dissemination of asset management research results through an ongoing technology transfer program. This document provides a progress for the latest fiscal year of operation of the MTC, which ran from October 2004 through September 2005

Getting ready for the specialised engineering diplomas: work placements for the 14 to 16 age phase

In the UK there is considerable activity at national level in developing the interface between school and training for employment. The intention is to introduce new Specialised Diploma courses into schools starting in 2008. Early in the planning it became clear that several diplomas offer opportunities for design and technology (D&T) in schools. A key feature of these diplomas is that the structure consists of learning lines comprising of several subjects coming together for the delivery in schools. However, a significant feature is the integration of work placement into the student learning experience. Sheffield Children and Young People Directorate (CYPD) has a strong commitment to ensuring diplomas are implemented successfully in schools therefore this research was undertaken to assess both the provision and opportunities for work placement in the 14 to 16 age phase. The research focused on commercial providers of education and training. Motor trade training was selected as an industry with the potential to contribute to the emerging specialised engineering diploma (www.engineeringdiploma.com/). The research consisted of: • a review of current qualifications for all aspects of the motor trades industry including those provided by the Institute of the Motor Industry; • semi-structured interviews, using Wiersma's (2000) methodology, with motor trade commercial training and further education (FE) providers; • observation and informal interviews with a group of Year 10 students on a motor trades work placement; • informal interviews with teachers and tutors responsible for the above group. The research outcomes identify issues concerning the provision of work placement within diplomas and particularly how it is integrated into the learning experience. Additionally there are implications for subject teaching of D&T, science and mathematics to ensure that students are prepared prior to work placement. The conclusion identifies examples of good practice but also raises issues about organisation and capacity. While this research concerned engineering the implications and issues are likely to be similar for other diplomas currently being prepared such as Manufacturing, Construction and the Built Environment and Hospitality and Catering