Development of acceptance criteria for batches of silane primer for external tank thermal protection system bonding applications

Concluding tests for the thermogravimetric and FTIR analyses of DC 1200 silane primers are discussed as well as methods for HPLC and GC analyses and for determining titanium and silicon by atomic absorption spectroscopy. Tables summarizes results obtained for residue, ash, titanium, silicone, Si/Ti ratio, OH-absorption, the lap-shear test, and the GC headspace for alcohols

Teacher Perceptions of the Impact of Vertical Non-Permanent Surfaces in Mathematics Classrooms

The historical, traditional mathematics classroom of students sitting in rows receiving information from the teacher and working individually was still prevalent in the 21st century. Many teachers had resorted to student-centered activities to engage passive students, but the minimal progress of math achievement of United States students denoted a need for the reform of the traditional mathematics classroom. In this multi-site, multi-case qualitative study, I explored teacher perceptions of the use of vertical non-permanent surfaces on the impact of engagement, including the use of formative assessment and feedback with mathematics students, and the lesson structure of 360 Degree Math. The study took place in a school district in the State of Georgia with 48 teachers teaching 2nd-12th grades mathematics. One major finding was the increase in the frequency and the manner of formative assessment of students and feedback to students with the implementation of VNPS based on teacher perception. The implementation of VNPS used during instruction in mathematics classrooms increased the opportunity for multiple student interactions and greater mathematics understanding

Contextualizing and reconstructing a model birch bark canoe

To perform a well-informed conservation treatment on an object, it is crucial to understand its context, history, and significance. When an object presents with little provenance or context, it can be difficult to determine the course that its treatment should follow. In this project, a structurally unstable birch bark canoe model of unknown origin was examined, researched, and treated. The treatment campaign was customized for the object based on literature research, owner consultation, and materials experimentation. The canoe model was structurally stabilized with adhesive and adhesive reactivated Japanese tissue, it was locally humidified and reshaped with Gore-Tex sandwiches, and was visually improved with a non-adhesive quill replacement technique. During the treatment campaign, new information was revealed about the potential origin of the object, confirming it was likely created by a Native artist as a souvenir for the tourist trade

Risk management and calculative cultures

Enterprise risk management (ERM) has recently emerged as a widespread practice in financial institutions. It has been increasingly codified and encrypted into regulatory, corporate governance and organisational management blueprints. A burgeoning literature of regulatory and practitioner texts is indicative of the apparent diversity of ambitions, objectives and techniques that constitute the ERM agenda. Making sense of these developments is a challenge. This paper presents field-based evidence from two large banking organisations suggesting that systematic variations in ERM practices exist in the financial services industry. The cases illustrate four risk management ideal types and show how they form the 'risk management mix' in a given organisation. Further, drawing on the literature of the roles and uses of management control systems (MCS), the paper explores how ERM achieved organisational significance in the studied settings. The findings are indicative of the current co-existence of alternative models of ERM. In particular, two types of ERM models are postulated: one driven by a strong shareholder value imperative (ERM by the numbers), the other corresponding to the demands of the risk-based internal control imperative (holistic ERM). This paper explains the differences in the two risk management mixes pointing towards alternative logics of calculation (Power, 2007), which I conceptualise and describe as different calculative cultures. The study suggests that calculative cultures, which in these cases shaped managerial predilections towards ERM practices, are relevant, albeit so far neglected, constituents of the fit between MCS and organizational contexts