Initial Teacher Education in peril: Why the market review is about anything but 'world-class training'

The Initial Teacher Training Market Review was released at the end of the most tumultuous of academic years. In spite of a claim to offer the promise of 'world- class training', the proposals, if enacted, have the potential to force out many with genuine expertise in teacher education. Written during the seven-week review consultation period, this article questions the recommendations of the document and the motivation behind what has been proposed. A range of possible implications are explored, and questions are posed about the review process itself.

Marine Applications of Plastic Piping – Requirements and Market Review

Plastic piping has become more common onboard marine vessels, but plastics have additional requirements over metallic piping materials. While plastics offer superior corrosion resistance and weight savings over metals these benefits must be weighed against the effect of fire on plastic piping. These requirements vary based on system, location, and regulatory ruleset which can cause confusion when discussing the application. This paper attempts to clearly summarize the requirements as well as highlight some of the benefits and weaknesses of various plastic piping materials.

Review and selection of commercially available IMU for a short time inertial navigation

Purpose The selection of a suitable inertial measurement unit (IMU) is a critical step in an inertial navigation system (INS) design. Nevertheless, inertial sensors manufacturers are unwilling to publish their products’ accurate performance parameters along with a price. This paper aims to summarise the current IMU market review and point out parameters important for short-term inertial navigation. Design/methodology/approach The market review is based on the information published by manufacturers in brochures, datasheets and websites. Some information, including price, was also collected from sensors distributors. The entire collection of data includes data of over 150 sensors from 32 manufacturers and is valid for the first half of the year 2020. Findings This paper answers the following questions: •Why and where use inertial navigation? •Which parameters should one emphasise during IMU selection?•What is currently available on the IMU market? •Which parameters have a significant influence on price? •What are the advantages of specific sensor technology? Originality/value This paper gathers data published by IMU manufacturers, allowing for a quick overview of the current market. Based on real data, different sensor technologies are compared. The performed analysis presents the statistical basis for the IMU selection. By theoretical considerations a significance of sensor parameters is drawn and an approach to an IMU selection based on limited number of parameters is proposed. Although the considerations have been carried out regarding inertial navigation, the results from an extensive analysis of commercially available sensors may also be useful for other applications.