Conceptualising and prototyping a decision support system for safer urban unmanned aerial vehicle operations

Currently, there is limited discourse surrounding the safe operational planning of UAVs within complex multi-stakeholder urban environments. This paper conceptualises a methodology for prototyping a decision support system for urban UAV flight operations planning. The proposition is based on integrating urban 3-dimensional data with the physical factors of UAV flight operations. A simulated, holistic understanding of UAV usage in urban space emerges, enabling better informed decisions by planners around safe flight operations. The feasibility, applicability and benefits of the decision support system and associated policy implications for urban planners and UAV users are discussed scoping further development of this approach

Protecting Crowded Places from Terrorism: An analysis of the current considerations and barriers inhibiting the adoption of counter terrorism protective security measures

© 2018, © 2018 Taylor & Francis Group, LLC. While much of the literature concerning counterterrorism focuses on policies and strategies aimed at removing either the terrorist environment and/or the groups or individuals willing to utilize political violence to achieve their goal(s), there is a much smaller body of work concerned with antiterrorism, namely those defensive measures that are designed to prevent or deter terrorist attacks. Increasingly, crowded places have become popular targets for terrorists and the research presented in this article connects the planning, design, and development of real estate with respect to the adoption of protective counterterrorism measures. It seeks to develop new understandings of the considerations that real estate developments have toward terrorism, as well as the barriers that may inhibit counterterrorism protective security measures in future development projects. The analysis is based on qualitative research, namely semi-structured interviews conducted in the United Kingdom, United States, and Australia with professionals involved in all core strands of the real estate development process. The findings suggest that considerations toward terrorism vary considerably as a consequence of a range of factors and that while expected factors such as cost and aesthetics are important determinants for decision making, a range of other barriers exist

Impact of crime on spatial analysis of house prices: evidence from a UK city

Purpose – There is a lack of understanding in the literature on the spatial relationships between crime and house price. This paper aims to test the impact of spatial effects in the housing market, how these are related to the incidence of crime and whether effects vary by the type of crime. Design/methodology/approach – The analysis initially explores univariate and bivariate spatial patterns in crime and house price data for the Belfast Metropolitan Area using Moran’s I and Local Indicator Spatial Association (LISA) models, and secondly uses spatial autoregression models to estimate the role of crime on house prices. A spatially weighted two-stage least-squares model is specified to analyse the joint impact of crime variables. The analysis is cross sectional, based on a panel of data. Findings – The paper illustrates that the pricing impact of crime is complex and varies by type of crime, property type and location. It is shown that burglary and theft are associated with higher-income neighbourhoods, whereas violence against persons, criminal damage and drugs offences are mainly associated with lower-priced neighbourhoods. Spatial error effects are reduced in models based on specific crime variables. Originality/value – The originality of this paper is the application of spatial analysis in the study of the impact of crime upon house prices. Criticisms of hedonic price models are based on unexplained error effects; the significance of this paper is the reduction of spatial error effects achievable through the analysis of crime data

Alternative Splicing of sept9a and sept9b in Zebrafish Produces Multiple mRNA Transcripts Expressed Throughout Development

Background: Septins are involved in a number of cellular processes including cytokinesis and organization of the cytoskeleton. Alterations in human septin-9 (SEPT9) levels have been linked to multiple cancers, whereas mutations in SEPT9 cause the episodic neuropathy, hereditary neuralgic amyotrophy (HNA). Despite its important function in human health, the in vivo role of SEPT9 is unknown. Methodology/Principal Findings: Here we utilize zebrafish to study the role of SEPT9 in early development. We show that zebrafish possess two genes, sept9a and sept9b that, like humans, express multiple transcripts. Knockdown or overexpression of sept9a transcripts results in specific developmental alterations including circulation defects and aberrant epidermal development. Conclusions/Significance: Our work demonstrates that sept9 plays an important role in zebrafish development, an

SEPT9 occupies the terminal positions in septin octamers and mediates polymerization-dependent functions in abscission

Mammalian SEPT9 is positioned at the end of septin octamers and is necessary for octamer assembly into polymers necessary for abscission during cytokinesis

Prediction of organic combined sewer sediment release and transport

Accurate predictions of sediment loads released by sewer overflow discharges are important for being able to provide protection to vulnerable receiving waters. These predictions are sensitive to the estimated sediment characteristics and on the site-conditions of in-pipe deposit formation. Their application without a detailed analysis and understanding of the “initial conditions” under which in- sewer deposits were formed normally results in very poor estimations. In this study, in-sewer sediment samples deposited during dry-periods in a combined sewer system were collected, and their properties assessed. Parameters in the sediment transport relationship first proposed by Skipworth for in-pipe deposits were estimated based on simulating the in-pipe deposit formation conditions in laboratory erosion tests. The measured parameters were then used to simulate sediment transport through a small combined sewer network for a number of rain events for which rainfall, hydraulic and water quality data were available. Results showed that the model of Skipworth can provide good predictions of the sediment loads released from such in-sewer deposits. The experimentally-derived calibration parameters used with Skipworth’s model allowed for a realistic simulation of the in-sewer sediment behaviour and so can be used to accurately estimate the sediment load released from combined sewer systems during rainfall events