Final Project Report: Hydraulic Model Study Twelve Towns Retention Basin Model Study

https://deepblue.lib.umich.edu/bitstream/2027.42/154181/1/39015101404955.pd

Final Project Report: Hydraulic Model Study Raw Wastewater Pumping Station No. 2A Wastewater Treatment Plant Detroit, Michigan

https://deepblue.lib.umich.edu/bitstream/2027.42/154206/1/39015101405390.pd

Hydraulic Model Study: Wyandotte Wastewater Treatment Plant Influent Pump Station Wet Well

https://deepblue.lib.umich.edu/bitstream/2027.42/154185/1/39015101405044.pd

Final Project Report: Hydraulic Model Study Wastewater Influent Splitter Chamber Project 88 Southerly Wastewater Treatment Plant Columbus, Ohio

https://deepblue.lib.umich.edu/bitstream/2027.42/154194/1/39015101405192.pd

EchoFusion: Tracking and Reconstruction of Objects in 4D Freehand Ultrasound Imaging without External Trackers

Ultrasound (US) is the most widely used fetal imaging technique. However, US images have limited capture range, and suffer from view dependent artefacts such as acoustic shadows. Compounding of overlapping 3D US acquisitions into a high-resolution volume can extend the field of view and remove image artefacts, which is useful for retrospective analysis including population based studies. However, such volume reconstructions require information about relative transformations between probe positions from which the individual volumes were acquired. In prenatal US scans, the fetus can move independently from the mother, making external trackers such as electromagnetic or optical tracking unable to track the motion between probe position and the moving fetus. We provide a novel methodology for image-based tracking and volume reconstruction by combining recent advances in deep learning and simultaneous localisation and mapping (SLAM). Tracking semantics are established through the use of a Residual 3D U-Net and the output is fed to the SLAM algorithm. As a proof of concept, experiments are conducted on US volumes taken from a whole body fetal phantom, and from the heads of real fetuses. For the fetal head segmentation, we also introduce a novel weak annotation approach to minimise the required manual effort for ground truth annotation. We evaluate our method qualitatively, and quantitatively with respect to tissue discrimination accuracy and tracking robustness.Comment: MICCAI Workshop on Perinatal, Preterm and Paediatric Image analysis (PIPPI), 201

Revisiting the Population vs Phoneme-inventory Correlation

Speculation about the relationship between linguistic and non-linguistic structures dates back at least a century. Sapir (1912) suggested that the infuence of non-linguistic factors (such as topography, climate, fora and fauna, etc) are most clearly refected in a language’s vocabulary, but Sapir also believed that they afect the phonological and grammatical systems of languages. It is clear that certain non-linguistic contexts clearly favor diferential enrichment of the lexicon, evidenced by the uneven distribution of domain-specifc vocabulary in relation to the importance of those domains for diferent linguistic communities (e.g., Nettle, 1999). However, the relationship between phonologies and extralinguistic factors like social structure or population size has been more controversia

First NuSTAR Limits on Quiet Sun Hard X-Ray Transient Events

We present the first results of a search for transient hard X-ray (HXR) emission in the quiet solar corona with the \textit{Nuclear Spectroscopic Telescope Array} (\textit{NuSTAR}) satellite. While \textit{NuSTAR} was designed as an astrophysics mission, it can observe the Sun above 2~keV with unprecedented sensitivity due to its pioneering use of focusing optics. \textit{NuSTAR} first observed quiet Sun regions on 2014 November 1, although out-of-view active regions contributed a notable amount of background in the form of single-bounce (unfocused) X-rays. We conducted a search for quiet Sun transient brightenings on time scales of 100 s and set upper limits on emission in two energy bands. We set 2.5--4~keV limits on brightenings with time scales of 100 s, expressed as the temperature T and emission measure EM of a thermal plasma. We also set 10--20~keV limits on brightenings with time scales of 30, 60, and 100 s, expressed as model-independent photon fluxes. The limits in both bands are well below previous HXR microflare detections, though not low enough to detect events of equivalent T and EM as quiet Sun brightenings seen in soft X-ray observations. We expect future observations during solar minimum to increase the \textit{NuSTAR} sensitivity by over two orders of magnitude due to higher instrument livetime and reduced solar background.Comment: 11 pages, 7 figures; accepted for publication in The Astrophysical Journa