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In this work we construct new multi-dimensional families of compact minimal submanifolds of the classical Riemannian symmetric spaces SU(n)/SO(n)$, Sp(n)/U (n), SO(2n)/U(n)$ and SU(2n)/Sp(n) of codimension two

Climate mitigation constitutes an intergenerational moral dilemma; the decisions we make today will inevitably shape the prospects for generations to come. Yet, we still know little about the relationship between intergenerational altruism (IGA)—our concerns for the well-being of future generations—and support for costly climate mitigation policies. In this study, we present an approach to measuri

Which governments implement interventionist or liberalising labour policy reforms, and does the economic context matter? Drawing on the previous literature on government ideology and public policy, we hypothesise that leftist governments are more likely to implement interventionist labour policies. However, we also expect that economic circumstances influence parties’ room to manoeuvre, and we thu

Endophytic fungi, residing within plants without causing disease, are known for their ability to produce bioactive metabolites with diverse properties such as antibacterial, antioxidant, and antifungal activities, while also influencing plant defense mechanisms. In this study, five novel endophytic fungi species were isolated from the leaves of Psychotria poeppigiana Müll. Arg., a plant from the R

This paper forms part of a broader study on the design and optimisation of a high speed switched reluctance motor (SRM) for hybrid-electrical automotive traction applications. The main focus of this particular paper is to explain the design optimisation methodology followed. Furthermore, the main aim of the motor design is to push the power density of the SRM as high as possible. This leads to num

The growth of electromobility emphasizes the need for good charging solutions. Electric vehicles can be charged either while standing still (static charging) or while in movement (dynamic charging) by using electric road systems (ERSs). In both cases, significant power levels are used to transfer energy to the vehicles, thus requiring a thermal design that is able to handle the losses generated wh

Thermal design of electric traction machines for high performance HEV drivetrains is a challenging task. Unlike conventional HEV traction machines, these machines are subject to continuous operation at or near their thermal limits during race-track driving, and so thermal management is of paramount importance to the mass and size of the machine. This article presents the main challenges related to

This paper forms part of a broader study on the design optimization of a high speed switched reluctance motor for automotive traction applications. Due to the high speed operation and resulting high electrical frequency, it is of extreme importance that the different loss components of this motor are accurately calculated. In this study, several effects are observed that influence the accurate mea

This paper forms part of a broader study on the design of an unconventional, high speed, switched reluctance machine (SRM), for automotive traction applications making use of soft magnetic composite (SMC) material. The aim is to have this machine operate at a fundamental frequency of up to 4 kHz. Another characteristic is that switched reluctance machines tend to be operated in deep saturation a l

Conductive Electric Road Systems (ERS) appear as a promising solution for the electrification of transportation, particularly for heavy vehicles and long distance trips, but also for light vehicles. Significant research efforts are currently devoted to the development of conductive ERS systems, with up to 4 pilot test sites with different technologies in operation only in Sweden. This article asse

Transport electrification in Sweden is moving at a fast pace. Grid impact studies from EVs predominantly consider low-voltage grids. However, as the share of electric cars is rapidly increasing, potential grid impact at higher voltage levels needs to be considered. This paper presents a probabilistic approach to generate aggregated charging profiles for home charging at a sub-transmission grid lev

This article presents the first thermal experiments conducted on a novel cooling concept applied to a high speed switched reluctance machine topology for traction applications. By circulating the coolant in between the coils and the stator poles the winding and the stator iron are virtually thermally decoupled. A test motorette is used to demonstrate the potential of the cooling concept at current

This paper deals with the performance evaluation of a high speed axial flux switched reluctance motor for automotive traction applications. The motor makes use of a novel axial flux segmented rotor topology. The main aim of the design is to push the continuous power density as high as possible. The high speed nature of the design and the resulting high electrical frequency, as well as the machine

Conductive electric road systems are charging in-frastructures that allow electric vehicles to charge while driving. Similar to that of trolleybuses, trams and metro trains conductive electric roads use a physical sliding contact to facilitate the energy transfer between vehicle and road supply. However, as conductive electric roads introduce a new application for the sliding contact, knowledge is

Electrifying road transport is seen as one of the key components in decreasing the carbon footprint of the society as a whole. Recent developments in electric drivetrain and battery technology have helped to design vehicles with ranges that make them independent of public charging infrastructure during most sub-urban and commuting trips. Once long-haul trips are planned, however, these vehicles re

This paper focuses on the development of a machine design environment for numeric modelling and analysis of radial flux machines. The design environment is based on Matlab/(Octave) environment, which calls numeric field analysis by FEMM/(Opera-2D). The analysis tool is intended for educational purposes; however it has proved to be a powerful research tool especially at early design stages.

Our study aims to investigate the relationship between social participation and loneliness among Chinese older adults and examine how their views of social change moderate the strength of this relationship. The cross-sectional nationwide data from the China Longitudinal Aging Social Survey (CLASS) was used. Results show that increased online participation and community participation were associate