The Hudson Bay Lithospheric Experiment (HuBLE) : Insights into Precambrian Plate Tectonics and the Development of Mantle Keels

The UK component of HuBLE was supported by Natural Environment Research Council (NERC) grant NE/F007337/1, with financial and logistical support from the Geological Survey of Canada, Canada–Nunavut Geoscience Office, SEIS-UK (the seismic node of NERC), and First Nations communities of Nunavut. J. Beauchesne and J. Kendall provided invaluable assistance in the field. Discussions with M. St-Onge, T. Skulski, D. Corrigan and M. Sanborne-Barrie were helpful for interpretation of the data. D. Eaton and F. A. Darbyshire acknowledge the Natural Sciences and Engineering Research Council. Four stations on the Belcher Islands and northern Quebec were installed by the University of Western Ontario and funded through a grant to D. Eaton (UWO Academic Development Fund). I. Bastow is funded by the Leverhulme Trust. This is Natural Resources Canada Contribution 20130084 to its Geomapping for Energy and Minerals Program. This work has received funding from the European Research Council under the European Unions Seventh Framework Programme (FP7/2007-2013)/ERC Grant agreement no. 240473 ‘CoMITAC’.Peer reviewedPublisher PD

Potential impacts of genetic use restriction technologies (GURTs) on agrobiodiversity and agricultural production systems

Development and application of GURT as an appropriation mechanism may potentially have considerable impact on agriculture, the environment and the food security of rural areas in developing countries. Positive impacts may include increased investments in breeding as a result of increased intellectual property protection. Increased investments may contribute to higher yields and more advanced varieties, and thus to increased food production, a more sustainable production, and better consumer products. Potential negative impacts have been identified as well. These may require further discussion and close attention by regulatory authorities

The Rotation Period of the Planet-Hosting Star HD 189733

We present synoptic optical photometry of HD 189733, the chromospherically active parent star of one of the most intensively studied exoplanets. We have significantly extended the timespan of our previously reported observations and refined the estimate of the stellar rotation period by more than an order of magnitude: $P = 11.953\pm 0.009$ days. We derive a lower limit on the inclination of the stellar rotation axis of 56\arcdeg (with 95% confidence), corroborating earlier evidence that the stellar spin axis and planetary orbital axis are well aligned.Comment: To appear in A

Maximizing nearest neighbour entanglement in finitely correlated qubit--chains

We consider translationally invariant states of an infinite one dimensional chain of qubits or spin-1/2 particles. We maximize the entanglement shared by nearest neighbours via a variational approach based on finitely correlated states. We find an upper bound of nearest neighbour concurrence equal to C=0.434095 which is 0.09% away from the bound C_W=0.434467 obtained by a completely different procedure. The obtained state maximizing nearest neighbour entanglement seems to approximate the maximally entangled mixed states (MEMS). Further we investigate in detail several other properties of the so obtained optimal state.Comment: 12 pages, 4 figures, 2nd version minor change

Doctoral student reflections of blended learning before and during covid-19

Purpose: Our study aimed to address the central research question: how were our experiences as graduate students in a blended learning professional doctoral program changed by the COVID-19 crisis? The study adds to a growing body of literature on blended learning graduate programs. Methods: We employed action research as our central methodology and leveraged narrative inquiry to elevate our (students’) voices. The two participant-researchers responded to a series of questions supported by narrative reflections from their common academic supervisor. Emergent themes were identified in the data using narrative analysis techniques for coding qualitative data into themes. This was followed by a second phase of data collection and analysis after the emergence of the COVID-19 pandemic. Results: The researchers identified four themes within the data: 1. balancing doctoral work with professional and personal responsibilities; 2. cohort provides formal and informal support; 3. individuality of the experience; and 4. supervisory group support. Implications: Our study offers a number of key learnings that may benefit researchers studying blended learning programs. The key learnings suggest benefits to cohort-based, blended learning programs, as well as difficulties that may emerge in the individuality of the experience, when encountering crises, as well as more generally. (DIPF/Orig.

Doctoral student reflections of blended learning before and during covid-19

Purpose: Οur study aimed to address the central research question: how were our experiences as graduate students in a blended learning professional doctoral program changed by the COVID-19 crisis? The study adds to a growing body of literature on blended learning graduate programs. Methods: We employed action research as our central methodology and leveraged narrative inquiry to elevate our (students’) voices. The two participant-researchers responded to a series of questions supported by narrative reflections from their common academic supervisor. Emergent themes were identified in the data using narrative analysis techniques for coding qualitative data into themes. This was followed by a second phase of data collection and analysis after the emergence of the COVID-19 pandemic. Results: Τhe researchers identified four themes within the data: 1. balancing doctoral work with professional and personal responsibilities; 2. cohort provides formal and informal support; 3. individuality of the experience; and 4. supervisory group support. Implications: Οur study offers a number of key learnings that may benefit researchers studying blended learning programs. The key learnings suggest benefits to cohort-based, blended learning programs, as well as difficulties that may emerge in the individuality of the experience, when encountering crises, as well as more generally

The Altitude Effect on Air Speed Indicators

The object of this report is to present the results of a theoretical and experimental study of the effect, on the performance of air speed indicators, of the different atmospheric conditions experienced at various altitudes

The negative impact of global health worker migration, and how it can be addressed

International migration of healthcare workers is well established and has become a means of maintaining service quality in many high income countries. In recent years, there has been a dramatic increase in recruitment of health personnel who have been trained abroad, including from the poorest countries in the world. In this article, using General Medical Council (GMC) data, we chart the growth in numbers of international staff working in the United Kingdom, where since 2018, over half of all new GMC registrations have been of doctors trained abroad. There is evidence that this migration of health staff results in poorer health service provision in low and middle income countries, as well as substantial economic impacts in these countries that have invested in training their health workforce. Recruiting governments have argued that remittances compensate for the loss of personnel, and that training opportunities can enable skills transfer to countries with weaker health systems. However, we found that the costs to the source countries dwarfed remittances, and that only a tiny fraction of people who move to take up posts in wealthier countries ever return to their countries of origin to work. We conclude that in addition to the investment in health systems (and workforce development) in low and middle income countries as part of Official Development Assistance for Health, there is an urgent need to increase training of nurses and doctors so that damaging migration is no longer relied upon to fill gaps in healthcare personnel

Reactive direction control for a mobile robot: A locust-like control of escape direction emerges when a bilateral pair of model locust visual neurons are integrated

Locusts possess a bilateral pair of uniquely identifiable visual neurons that respond vigorously to the image of an approaching object. These neurons are called the lobula giant movement detectors (LGMDs). The locust LGMDs have been extensively studied and this has lead to the development of an LGMD model for use as an artificial collision detector in robotic applications. To date, robots have been equipped with only a single, central artificial LGMD sensor, and this triggers a non-directional stop or rotation when a potentially colliding object is detected. Clearly, for a robot to behave autonomously, it must react differently to stimuli approaching from different directions. In this study, we implement a bilateral pair of LGMD models in Khepera robots equipped with normal and panoramic cameras. We integrate the responses of these LGMD models using methodologies inspired by research on escape direction control in cockroaches. Using ‘randomised winner-take-all’ or ‘steering wheel’ algorithms for LGMD model integration, the khepera robots could escape an approaching threat in real time and with a similar distribution of escape directions as real locusts. We also found that by optimising these algorithms, we could use them to integrate the left and right DCMD responses of real jumping locusts offline and reproduce the actual escape directions that the locusts took in a particular trial. Our results significantly advance the development of an artificial collision detection and evasion system based on the locust LGMD by allowing it reactive control over robot behaviour. The success of this approach may also indicate some important areas to be pursued in future biological research