4,137 research outputs found

    Characterisation of the first authenticated organomercury hydroxide, 4-Meā‚‚NCā‚†Hā‚„HgOH

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    4-Meā‚‚NCā‚†Hā‚„HgOH was prepared from 4-Meā‚‚NCā‚†Hā‚„HgOAc. Full characterisation showed that it crystallises as discrete molecules, the first example of a true organomercury hydroxide in the solid state. The structures of 4-Meā‚‚NCā‚†Hā‚„HgOAc and (4-Meā‚‚NCā‚†Hā‚„)ā‚‚Hg are also discussed. 4-Meā‚‚NCā‚†Hā‚„HgOH has been characterised spectroscopically and crystallographically as a true organomercury hydroxide

    No ordinary field trip: a conversation with John Lewis

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    Eighth grade students from Bank Street School for Children meet Congressman John Lewis in Washington D. C.https://educate.bankstreet.edu/progressive/1003/thumbnail.jp

    Programming deliberation strategies in meta-APL

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    A key advantage of BDI-based agent programming is that agents can deliberate about which course of action to adopt to achieve a goal or respond to an event. However, while state-of-the-art BDI-based agent programming languages provide flexible support for expressing plans, they are typically limited to a single, hard-coded, deliberation strategy (perhaps with some parameterisation) for all task environments. In this paper, we present an alternative approach. We show how both agent programs and the agentā€™s deliberation strategy can be encoded in the agent programming language meta-APL. Key steps in the execution cycle of meta-APL are reflected in the state of the agent and can be queried and updated by meta-APL rules, allowing BDI deliberation strategies to be programmed with ease. To illustrate the flexibility of meta-APL, we show how three typical BDI deliberation strategies can be programmed using meta-APL rules. We then show how meta-APL can used to program a novel adaptive deliberation strategy that avoids interference between intentions

    Deindividuation of Drivers: Is Everyone Else a Bad Driver?

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    Deindividuation is a psychological phenomenon that occurs when a given environment reduces the individuality or identifiability of a person. These environments may cause a psychological reduction in self-consciousness, potentially leading to violations of sociocultural norms (Festinger, Pepitone, & Newcomb, 1952; Singer, Brush, & Lublin, 1965). The present research sought to empirically test deindividuation theory among automobile drivers utilizing the anonymizing factor of observation. Participants (N = 31) used a driving simulator and were either in the observed condition or an unobserved condition. Analysis of driving data did not reveal significant results, however self-report data had some interesting trends. Though limited in scope, this research begins to shed light on deindividuation of drivers and may provide a foundation for future research

    Challenges in operation of the Abuja water distribution system: headquarters and area office perspectives

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    Often effective management of a water resource will involve cooperation and understanding between concerned stakeholders. An inquiry into the challenges in operation of the current water distribution system at the Headquarters and Areas Office of the Federal Capital Territory Water Board (FCTWB) showed that reluctance to share information (where present) to maintain a level of control on was routine and often lead to differing views between them on various subjects including non-revenue water and cooperation with the city development agency. It also revealed the need for integration of the operational staff of the area offices in the affairs and decisions of the headquarters in order to ensure practicality of programmes during the planning phase and promote cooperation and initiative in implementation

    The impact of COVID-19 fiscal spending on climate change adaptation and resilience

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    Government expenditure and taxation have a significant influence on the long-term adaptation and resilience of societies to climate and other environmental shocks. Unprecedented fiscal spending in the COVID-19 recovery offered an opportunity to systematically enhance adaptation and resilience to future shocks. But did the ā€˜build back betterā€™ rhetoric manifest in more resilient policy? We develop a dedicated fiscal policy taxonomy for climate change adaptation and resilience (A&R)ā€”the Climate Resilience and Adaptation Financing Taxonomy (CRAFT)ā€”and apply this to analyse ~8,000 government policies across 88 countries. We find that US$279ā€“334 billion (9.7ā€“11.1%) of economic recovery spending potentially had direct A&R benefits. This positive spending is substantial in absolute terms but falls well below adaptation needs. Moreover, a notable portion (27.6ā€“28%) of recovery spending may have had negative impacts on A&R, acting to lock in non-resilient infrastructure. We add a deep learning algorithm to consider A&R themes in associated COVID-19 policy documents. Compared with climate mitigation, A&R received only one-third of the spending and was mentioned only one-seventh as frequently in policy documents. These results suggest that the COVID-19 fiscal response missed many opportunities to advance climate A&R. We draw conclusions for how to better align fiscal policy with A&R

    SOS: Selective Objective Switch for Rapid Immunofluorescence Whole Slide Image Classification

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    The difficulty of processing gigapixel whole slide images (WSIs) in clinical microscopy has been a long-standing barrier to implementing computer aided diagnostic systems. Since modern computing resources are unable to perform computations at this extremely large scale, current state of the art methods utilize patch-based processing to preserve the resolution of WSIs. However, these methods are often resource intensive and make significant compromises on processing time. In this paper, we demonstrate that conventional patch-based processing is redundant for certain WSI classification tasks where high resolution is only required in a minority of cases. This reflects what is observed in clinical practice; where a pathologist may screen slides using a low power objective and only switch to a high power in cases where they are uncertain about their findings. To eliminate these redundancies, we propose a method for the selective use of high resolution processing based on the confidence of predictions on downscaled WSIs --- we call this the Selective Objective Switch (SOS). Our method is validated on a novel dataset of 684 Liver-Kidney-Stomach immunofluorescence WSIs routinely used in the investigation of autoimmune liver disease. By limiting high resolution processing to cases which cannot be classified confidently at low resolution, we maintain the accuracy of patch-level analysis whilst reducing the inference time by a factor of 7.74.Comment: Accepted for publication at CVPR202
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