Filtyp
We present a numerical scheme for the solution of the initial-value problem for the “bad” Boussinesq equation. The accuracy of the scheme is tested by comparison with exact soliton solutions as well as with recently obtained asymptotic formulas for the solution.
Firms require multi-stakeholder ecosystems to successfully create and implement circular business models for electric vehicle (EV) battery second life. However, there is a notable absence of guiding instruments to assist EV battery ecosystem actors in formulating and managing strategies for battery second-life operations. This study's aim is to analyze how circular ecosystems are formed and manage
This study featured about the synthesis of graphene oxide hydrogel-CuO@reduced graphene oxide (rGH-CuO@rGO) micromotors with core-shell structure via an ultrasonication-assisted chemical precipitation method and their application for catalytic dye degradation. The micromotors were comprehensively characterized by X-ray diffraction (XRD), scanning electron microscopy (SEM), transmission electron mi
We investigate the computation of stable fracture paths in brittle thin films using one-dimensional damage models with an elastic foundation. The underlying variational formulation is non-convex, making the evolution path sensitive to algorithmic choices. In this paper, we inquire into the effectiveness of quasi-Newton algorithms as an alternative to conventional Newton-Raphson solvers. These algo
This study analyzed Japanese mandible movements using a recently developed technique, the MARRYS helmet [Gudmundsson et al., Interspeech (2024)]. Data were collected from 9 first language and 10 second language (Mandarin Chinese) speakers of Japanese. The speech materials included three sentences composed entirely of /a/ vowels, one neutral sentence and three focus sentences with emphasis on diffe
Co-speech head and eyebrow gestures often align with pitch accents in spoken language production, thereby likely instantiating what we could refer to as multimodal prominence. Indeed, when speech is perceived audio-visually, controlled experimental studies have shown that both pitch accents and head and eyebrow gestures, when independently manipulated, have sizable effects on perceived prominence.
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
