An analysis of the bursars’ accounts at Durham Cathedral Priory 1278- 1398

This paper is based upon an examination of a selection of the bursars' accounts from Durham Cathedral Priory covering the period ftom the first extant account (1278-9) to the end of the 14th century. The accounts selected have been transcribed from the original documents and translated from Latin into English. A traditional focus of accounting historians in the medieval period has been on manorial accounting and the system of charge and discharge. This paper examines a series of non-manorial accounts and a variety of supporting accounting materials, analyzing them for evidence of the development and refinement of controls. After an introduction which reviews the background of the accounts and the extent to which they have been utilized for historical research, this paper describes the various sources of receipts and types of expenditure which are revealed. The format of the accounts is traced, and a review of total receipts and expenditure is conducted to gain an understanding of the overall financial position of the bursar's office. Next, the accounts are considered within the context of other accounting records to explore the financial controls in place. Finally, areas for further investigation and analysis are identified. The accounts selected reveal that actual receipts and actual expenditure were kept closely in tandem, and that an extensive network of other accounting material and documents allowing a system of cross-checks enabled auditors to ascertain the veracity and accuracy of the accounts

Environmental Awareness Workshop: An Introduction to Green Initiatives at SUNY Brockport

SUNY Brockport has adopted a variety of green initiatives on campus, including a reusable mug program, solar powered parking pay stations, textbook rentals, carpooling programs, and newly constructed buildings meeting LEED certification. Although SUNY Brockport has made progress in becoming more environmentally friendly, the general education program does not include a component on environmental awareness, and freshmen orientation fails to inform students of green initiatives on campus. Students are unlikely to participate in green initiatives without information specific to the SUNY Brockport campus. This was illustrated during the fall 2014 semester when the Honors College almost had to suspend the free printing privilege in the Honors Lounge. An estimated 35,000 sheets of paper were consumed and the cost of printing was much higher than the allotted budget. A required interactive workshop given at freshmen orientation would introduce students to green initiatives on campus. We have designed a workshop titled, “Going Green on Campus” to pilot at the 2015 Honors College Orientation for Honors freshmen. The objectives of the workshop will be to inform students on (1) recycling on campus, (2) carpooling on campus, (3) printing consciously, (4) what the college is doing to make campus more sustainable, and (5) what students can do to make campus more sustainable. There will be a section to address each objective, consisting of a series of modules, videos, and follow-up assessments. To determine if the workshop is successful we will compare paper consumption in the Honors Lounge before and after the workshop is implemented. Data collection began during the fall 2014 semester and will continue through spring 2016. We hope a formal introduction to living environmentally consciously will increase student participation in green initiatives, which will be demonstrated by a decrease in paper consumption in the Honors Lounge after the workshop is given

NAFTA, motor carriers and highway safety

The signing of the NAFTA agreement signaled the beginning of increased efforts to harmonize trade between the U.S., Canada, and Mexico. Unfortunately the harmonization of transportation links is lagging far behind proposed implementation dates. This narrative describes the highway safety, and concerns expressed by highway safety advocates and Teamsters union representatives, and documented by the GAO. The authors propose a market based alternative to restricting transborder traffic to the narrow commercial zone presently in place

Vision guided robotic inspection for parts in manufacturing and remanufacturing industry

Environmental and commercial drivers are leading to a circular economy, where systems and components are routinely recycled or remanufactured. Unlike traditional manufacturing, where components typically have a high degree of tolerance, components in the remanufacturing process may have seen decades of wear, resulting in a wider variation of geometries. This makes it difficult to translate existing automation techniques to perform Non-Destructive Testing (NDT) for such components autonomously. The challenge of performing automated inspections, with off-line tool-paths developed from Computer Aided Design (CAD) models, typically arises from the fact that those paths do not have the required level of accuracy. Beside the fact that CAD models are less available for old parts, these parts often differ from their respective virtual models. This paper considers flexible automation by combining part geometry reconstruction with ultrasonic tool-path generation, to perform Ultrasonic NDT. This paper presents an approach to perform custom vision-guided ultrasonic inspection of components, which is achieved through integrating an automated vision system and a purposely developed graphic user interface with a robotic work-cell. The vision system, based on structure from motion, allows creating 3D models of the parts. Also, this work compares four different tool-paths for optimum image capture. The resulting optimum 3D models are used in a virtual twin environment of the robotic inspection cell, to enable the user to select any points of interest for ultrasonic inspection. This removes the need of offline robot path-planning and part orientation for assessing specific locations on a part, which is typically a very time-consuming phase

Data-driven analysis of ultrasonic pressure tube inspection data

Pressure tubes are critical components of the CANDU reactors and other pressurized heavy water type reactors, as they contain the nuclear fuel and the coolant. Manufacturing flaws, as well as defects developed during the in-service operation, can lead to coolant leakage and can potentially damage the reactor. The current inspection process of these flaws is based on manually analyzing ultrasonic data received from multiple probes during planned, statutory outages. Recent advances on ultrasonic inspection tools enable the provision of high resolution data of significantly large volumes. This is highlighting the need for an efficient autonomous signal analysis process. Typically, the automation of ultrasonic inspection data analysis is approached by knowledge-based or supervised data-driven methods. This work proposes an unsupervised data-driven framework that requires no explicit rules, nor individually labeled signals. The framework follows a two-stage clustering procedure that utilizes the DBSCAN density-based clustering algorithm and aims to provide decision support for the assessment of potential defects in a robust and consistent way. Nevertheless, verified defect dimensions are essential in order to assess the results and train the framework for unseen defects. Initial results of the implementation are presented and discussed, with the method showing promise as a means of assessing ultrasonic inspection data

A Strong Jet Signature in the Late-Time Lightcurve of GW170817

We present new 0.6-10 GHz observations of the binary neutron star merger GW170817 covering the period up to 300 days post-merger, taken with the Karl G. Jansky Very Large Array, the Australia Telescope Compact Array, the Giant Metrewave Radio Telescope and the MeerKAT telescope. We use these data to precisely characterize the decay phase of the late-time radio light curve. We find that the temporal decay is consistent with a power-law slope of t^-2.2, and that the transition between the power-law rise and decay is relatively sharp. Such a slope cannot be produced by a quasi-isotropic (cocoon-dominated) outflow, but is instead the classic signature of a relativistic jet. This provides strong observational evidence that GW170817 produced a successful jet, and directly demonstrates the link between binary neutron star mergers and short-hard GRBs. Using simple analytical arguments, we derive constraints on the geometry and the jet opening angle of GW170817. These results are consistent with those from our companion Very Long Baseline Interferometry (VLBI) paper, reporting superluminal motion in GW170817.Comment: 11 pages, 3 figures, 3 tables. Accepted for publication in ApJ Letter

Single cell RNA sequencing and lineage tracing confirm mesenchyme to epithelial transformation (MET) contributes to repair of the endometrium at menstruation

The human endometrium experiences repetitive cycles of tissue wounding characterised by piecemeal shedding of the surface epithelium and rapid restoration of tissue homeostasis. In this study, we used a mouse model of endometrial repair and three transgenic lines of mice to investigate whether epithelial cells that become incorporated into the newly formed luminal epithelium have their origins in one or more of the mesenchymal cell types present in the stromal compartment of the endometrium. Using scRNAseq, we identified a novel population of PDGFRb + mesenchymal stromal cells that developed a unique transcriptomic signature in response to endometrial breakdown/repair. These cells expressed genes usually considered specific to epithelial cells and in silico trajectory analysis suggested they were stromal fibroblasts in transition to becoming epithelial cells. To confirm our hypothesis we used a lineage tracing strategy to compare the fate of stromal fibroblasts (PDGFRa+) and stromal perivascular cells (NG2/CSPG4+). We demonstrated that stromal fibroblasts can undergo a mesenchyme to epithelial transformation and become incorporated into the re-epithelialised luminal surface of the repaired tissue. This study is the first to discover a novel population of wound-responsive, plastic endometrial stromal fibroblasts that contribute to the rapid restoration of an intact luminal epithelium during endometrial repair. These findings form a platform for comparisons both to endometrial pathologies which involve a fibrotic response (Asherman’s syndrome, endometriosis) as well as other mucosal tissues which have a variable response to wounding