Vortex Effects for Canard-wing Configurations at High Angles of Attack in Subsonic Flow

A fully three-dimensional subsonic panel method that can handle arbitrary shed vortex wakes is used to compute the nonlinear forces and moments on simple canard-wing configurations. The lifting surfaces and wakes are represented by doublet panels. The Mangler-Smith theory is used to provide an initial estimate for the vortex sheet shed from the leading edge. The trailing-edge wake and the leading-edge wake downstream of the trailing edge are assumed to be straight and leave the trailing edge at an angle of alpha/2. Results indicate good agreement with experimental data up to 40 degs angle of attack

Alignment model for trunk road network maintenance outsourcing

Road maintenance outsourcing is now the foremost strategy by which road authorities procure maintenance works. Despite growing application of road maintenance outsourcing, there are conflicting estimates on the effective­ness of road maintenance outsourcing and shortage of appropriate models to align over optimistic expectations of road authorities from road maintenance outsourcing with substantiated benefits. This paper investigates the efficacy of road maintenance outsourcing. In this paper, the different variants of road maintenance outsourcing and road maintenance works are evaluated with a SWOT analysis and a comprehensive literature review respectively. In addition, a road main­tenance outsourcing alignment model based on a decision tree and Balance Score Card is proposed and illustrated with a Nigerian trunk road network authority as a case study. The result of the SWOT analysis and comprehensive literature review establishes fresh insight into road maintenance outsourcing dynamics. The presented road maintenance outsourc­ing alignment model provides adequate pathways that could assist road authorities identify the most appropriate road maintenance outsourcing variant for road maintenance procurement. In addition it aligns actual benefits and expectations of road maintenance outsourcing and facilitates development of SMART metrics for effective assessment of road main­tenance outsourcing. The proposed model is applicable across other infrastructures. First published online: 01 Sep 201

The relationship between foot arch measurements and walking parameters in children

BACKGROUND: Walking mechanics are influenced by body morphology. Foot arch height is one aspect of body morphology central to walking. However, generalizations about the relationship between arch height and walking are limited due to previous methodologies used for measuring the arch and the populations that have been studied. To gain the knowledge needed to support healthy gait in children and adults, we need to understand this relationship in unimpaired, typically developing children and adults using dynamic measures. The purpose of the current study was to examine the relationship between arch height and gait in a sample of healthy children and adults using dynamic measures. METHODS: Data were collected from 638 participants (n = 254 children and n = 384 adults) at the Museum of Science, Boston (MOS) and from 18 4- to 8-year-olds at the Motor Development and Motor Control Laboratories. Digital footprints were used to calculate two arch indices: the Chippaux-Smirak (CSI) and the Keimig Indices (KI). The height of the navicular bone was measured. Gait parameters were captured with a mechanized gait carpet at the MOS and three-dimensional motion analyses and in-ground force plates in the Motor Development and Motor Control Laboratories. RESULTS: Linear regression analyses on data from the MOS confirmed that as age increases, step length increases. With a linear mixed effect regression model, we found that individuals who took longer steps had higher arches as measured by the KI. However, this relationship was no longer significant when only adults were included in the model. A model restricted to children found that amongst this sample, those with higher CSI and higher KI values take longer relative step lengths. Data from the Motor Development and Motor Control Laboratories showed that both CSI and KI added to the prediction; children with lower anterior ground reaction forces had higher CSI and higher KI values. Arch height indices were correlated with navicular height. CONCLUSIONS: These results suggest that more than one measure of the arch may be needed elucidate the relationship between arch height and gait.K12 HD055931 - NICHD NIH HHS; K12HD055931 - NICHD NIH HH

Determining the number of clusters in a mixture by iterative model space refinement with application to free-swimming fish detection

We present a clustering algorithm for use when the number of clusters is unknown. We first show that the EM algorithm for mixture modeling can be considered as an alternating minimization between the data space and the model space. We then show how data cleaning can be performed by alternating between the data space and two model spaces. Finally, we develop a mixture model approach that iteratively refines the model spaces, beginning with a coarse model and selecting finer models as indicated by the consistent Akaike information criterion

Revising Mary Queen of Scots: from Protestant Persecution to Patriarchal Struggle

Since Mary Queen of Scots’ execution in 1587, she has become a symbol of Scottish identity, failed female leadership, and Catholic martyrdom. Throughout the twentieth century, Mary was regularly depicted on screen (Ford, 1936; Froelich, 1940; Jarrott, 1971) as a thrice-wed Catholic queen, unable to rule her country due to her feminine nature and Catholic roots. However, with the rise of third wave feminism and postfeminism in media, coupled with the increased influence of female directors and writers, Mary’s characterization has shifted from portraying female/emotional weakness and religious sacrifice to female/collaborative strength in hardship and a struggle against patriarchal prejudice. Josie Rourke’s film Mary Queen of Scots (2018) and CW’s Reign (2013-2017) present a queen who is no longer limited to her religious identity as a Catholic martyr, and consequently a weak ruler. Instead religious division is mostly sidelined, and gendered politics is the central struggle, highlighting similarities between Mary and Queen Elizabeth I of England, where previous films presented opposites. Together, these two productions transform Mary’s narrative from fragility and religion, into a struggle against misogynistic control of powerful women

Depictions of Catholic and Protestant Bodies in Elizabeth (dir. Kapur, 1998)

This article uses the film Elizabeth (dir. Kapur, 1998) as a portal for understanding the interstices between modern and early modern conceptions of religion as it is read on the body. Elizabeth examines the period of religious and political unrest immediately before and after the coronation of Queen Elizabeth I (r. 1558-1603), compressing the late 1550s through the early 1570s into a comprehensive statement on the relationship between the body, heresy, and corruption. This article investigates how lower body activities and functions, like dancing, sex, and defecation, were linked in both the film and early modern minds to immorality, corruption, and heresy. This was especially true during the sixteenth century as the English Protestant Reformation\u27s dialogic battle against Catholic clergy progressed and conspiracies against the queen mounted. By contrast, both Elizabethan contemporaries and director Shekhar Kapur establish upper body activities, like reading and intellectual work, as wholesome and virtuous. As the film follows the queen\u27s transformation from youthful sensuality to physically detached wisdom, Kapur employs ideas proposed by Elizabeth\u27s contemporaries to frame religion and corruption through bodily characterization

Combining data from different algorithms to segment the skin-air interface in mammograms

This paper presents a method for combining several different estimates of the mammographic skin-air interface in order to eliminate noise inherent to each individual segmentation algorithm. Given that each algorithm provides a binary mask of the breast, the first step is to isolate pixels adjacent to the skin-air interface. A final estimate of the skin-air interface for each point results from the combination of skin-air interface location data from each procedure. Data for each point is grouped as a set, upon which statistical operators, such as the elimination of outliers, are applied. Since the skin-air interface is a continuous line, data from prior points is also used as an estimate of points that follow. Results are evaluated in terms of success with the combination of two skin-air interface segmentation algorithms. The resulting `hybrid' technique overcomes several problems that beset each individual algorith