Understanding research dynamics

Rexplore leverages novel solutions in data mining, semantic technologies and visual analytics, and provides an innovative environment for exploring and making sense of scholarly data. Rexplore allows users: 1) to detect and make sense of important trends in research; 2) to identify a variety of interesting relations between researchers, beyond the standard co-authorship relations provided by most other systems; 3) to perform fine-grained expert search with respect to detailed multi-dimensional parameters; 4) to detect and characterize the dynamics of interesting communities of researchers, identified on the basis of shared research interests and scientific trajectories; 5) to analyse research performance at different levels of abstraction, including individual researchers, organizations, countries, and research communities

How are topics born? Understanding the research dynamics preceding the emergence of new areas

The ability to promptly recognise new research trends is strategic for many stake- holders, including universities, institutional funding bodies, academic publishers and companies. While the literature describes several approaches which aim to identify the emergence of new research topics early in their lifecycle, these rely on the assumption that the topic in question is already associated with a number of publications and consistently referred to by a community of researchers. Hence, detecting the emergence of a new research area at an embryonic stage, i.e., before the topic has been consistently labelled by a community of researchers and associated with a number of publications, is still an open challenge. In this paper, we begin to address this challenge by performing a study of the dynamics preceding the creation of new topics. This study indicates that the emergence of a new topic is anticipated by a significant increase in the pace of collaboration between relevant research areas, which can be seen as the ‘parents’ of the new topic. These initial findings (i) confirm our hypothesis that it is possible in principle to detect the emergence of a new topic at the embryonic stage, (ii) provide new empirical evidence supporting relevant theories in Philosophy of Science, and also (iii) suggest that new topics tend to emerge in an environment in which weakly interconnected research areas begin to cross-fertilise

A review of the paper 'Some insights into the dynamics of defective structures' by J. A. Brandon

John Brandon has a long-standing record of leading internationally recognized research in the area of structural and non-linear dynamics as well as on the analysis of the mechanics and dynamics of defective structures. His consistent research in these areas is aimed at an in-depth understanding of the dynamics of damaged structures combined with the mechanics of crack development. He initiated and led the Cardiff research group on non-linear structural dynamics and damage analysis and detection for many years. His article 'Some insights into the dynamics of defective structures' is an excellent example of assembling and presenting together a lot of the research in the vibration modelling and experimental testing of damaged structures. It presents and summarizes the recent findings and trends in non-linear dynamics of defective structures. The reviewed article focuses mainly on the modelling and the analysis of non-linear effects in structural dynamics as well as in the dynamics of damaged structures, which have mostly been neglected in the recent literature

Focus on the impact of climate change on wetland ecosystem and carbon dynamics

The renewed growth in atmospheric methane (CH4)since 2007 after a decade of stabilization has drawn much attention to its causes and future trends. Wetlands are the single largest source of atmospheric CH4. Understanding wetland ecosystems and carbon dynamics is critical to the estimation of global CH4 and carbon budgets. After approximately 7 years of CH4 related research following the renewed growth in atmospheric CH4, Environmental Research Letters launched a special issue of research letters on wetland ecosystems and carbon dynamics in 2014. This special issue highlights recent developments in terrestrial ecosystem models and field measurements of carbon fluxes across different types of wetland ecosystems. The 14 research letters emphasize the importance of wetland ecosystems in the global CO2 and CH4 budget

Chimera states: Coexistence of coherence and incoherence in networks of coupled oscillators

A chimera state is a spatio-temporal pattern in a network of identical coupled oscillators in which synchronous and asynchronous oscillation coexist. This state of broken symmetry, which usually coexists with a stable spatially symmetric state, has intrigued the nonlinear dynamics community since its discovery in the early 2000s. Recent experiments have led to increasing interest in the origin and dynamics of these states. Here we review the history of research on chimera states and highlight major advances in understanding their behaviour.Comment: 26 pages, 3 figure

Topics in Quantum Dynamics and Coherence for Quantum Information Processing

We outline selected trends and results in theoretical modeling of quantum systems in support of the developing research field of quantum information processing. The resulting modeling tools have been applied to semiconductor materials and nanostructures that show promise for implementation of coherent, controlled quantum dynamics at the level of registers of several quantum bits (qubits), such as spins. Many-body field-theoretical techniques have been utilized to address a spectrum of diverse research topics. Specifically, the theory of decoherence and more generally the origin and effects of quantum noise and the loss of entanglement in quantum dynamics of qubits and several-qubit registers has been advanced. Qubit coupling mechanisms via the indirect exchange interaction have been investigated, and quantum computing designs have been evaluated for scalability. We outline general and specific research challenges, the solution of which will advance the field of modeling "open quantum systems" to further our understanding of how environmental influences affect quantum coherence and its loss during quantum dynamics

Entrepreneurial dynamics and social responsibility: mapping an expanded intellectual territory

Objectives: (1) To provide a constructive critique of the interface between the entrepreneurial growth dynamics research and social responsibility literatures; (2) to explore opportunities for making new connections between these literatures in order to address substantive ‘gaps’ in research and policy-making ; (3) to map the broader intellectual territory implied by this critique; (4) to outline a tentative research agenda. Prior work: The paper draws on two main strands of research: entrepreneurial growth dynamics and (corporate) social responsibility. While much has been achieved in the social responsibility literature with regards to established practices, we argue that insufficient attention has been paid to the more ‘entrepreneurial’ dimensions. At the same time, the current wave of enthusiasm for new models of socially-responsible enterprise has opened up a series of new research questions, including: (i) how are these organisational forms likely to grow and develop over the longer-term, at an intra-organisational level, and in terms of emerging inter-organisational relationships?; (iii) how will other actors respond to these developments?; (ii) what are the implications of the resulting dynamics for social, environmental and economic sustainability? Approach: The paper is based around a critical review of the relevant literatures, focusing on the role of entrepreneurial opportunity and capabilities in shaping entrepreneurial growth dynamics. The discussion addresses current methodological debates and considers how social responsibility can be integrated into the analysis. In doing so, it builds on a research tradition that has promoted historically-informed multi-level and co-evolutionary analysis and argues that such techniques are required in order to gain a better understanding of these phenomena. Results: We outline a research agenda, illustrated with a number of questions of particular relevance to researchers, policy-makers and practitioners Implications: The paper identifies a number of issues for researchers and policy-makers and practitioner audiences. It calls for a broadening of the intellectual territory around socially-responsible enterprise. Process-based and multi-level analysis of growth dynamics extends its temporal and organisational boundaries to encompass longer-term interactions and a wider range of actors. Value: The paper is designed to facilitate and to encourage more constructive interaction between research communities concerned with: social responsibility, social enterprise and process-based approaches to entrepreneurship. It advances understanding by mapping an intellectual space that is neither fully revealed in, nor adequately addressed by, existing bodies of knowledge

Program of Research in Structures and Dynamics

The Structures and Dynamics Program was first initiated in 1972 with the following two major objectives: to provide a basic understanding and working knowledge of some key areas pertinent to structures, solid mechanics, and dynamics technology including computer aided design; and to provide a comprehensive educational and research program at the NASA Langley Research Center leading to advanced degrees in the structures and dynamics areas. During the operation of the program the research work was done in support of the activities of both the Structures and Dynamics Division and the Loads and Aeroelasticity Division. During the period of 1972 to 1986 the Program provided support for two full-time faculty members, one part-time faculty member, three postdoctoral fellows, one research engineer, eight programmers, and 28 graduate research assistants. The faculty and staff of the program have published 144 papers and reports, and made 70 presentations at national and international meetings, describing their research findings. In addition, they organized and helped in the organization of 10 workshops and national symposia in the structures and dynamics areas. The graduate research assistants and the students enrolled in the program have written 20 masters theses and 2 doctoral dissertations. The overall progress is summarized