Discursive formation of personalities: Life trajectories of a transnational doctoral student between the UK and China

Contributing to existing studies on global circuits of knowledge and labour, this paper presents a case study of Andy - a Chinese doctoral student in the UK - and looks at his transition from higher education to later joining the labour market after returning to China through the lens of personality traits. It draws upon literature on language socialisation and sociolinguistic studies of mobility, focusing on how social actors navigate transnational higher education and the consequences on professional development in a neoliberalising market economy. It aims to investigate how (in)appropriate personhood - as manifested in recurrent personality attributes - is enacted and negotiated in specific learning contexts in Andy's trajectory and the impact on employability, with various types of data consisting of participant observation, interviews, and relevant materials. The analysis suggests that Andy has been trained to engage communicatively with academic tasks in higher education settings. However, Andy considers himself lacking certain personality variables that could align with the criteria of a "good doctoral student"depicted by the institutions, such as being independent, motivated, and self-disciplined. Andy gradually shows disorientation in an academic career, albeit finding his inadequacy to perform the desired professional personhood in a labour market that values working experience and communication skills over education certification. This process explains why sometimes the expected communicative repertories and training acquired in higher education are not transferable into valuable resources that Andy can mobilise to become employed. This paper argues that neoliberal rationality has stratifying effects on individuals primarily due to an emphasis on self-responsibility and constant improvements. In transnational higher education, certain personality traits are considered desirable and lacking such characteristics can have side effects on mobile actors like Andy, who navigate the globalising labour market through uncertainty and precarity

Manipulating Sparse Double Descent

This paper investigates the double descent phenomenon in two-layer neural networks, focusing on the role of L1 regularization and representation dimensions. It explores an alternative double descent phenomenon, named sparse double descent. The study emphasizes the complex relationship between model complexity, sparsity, and generalization, and suggests further research into more diverse models and datasets. The findings contribute to a deeper understanding of neural network training and optimization

Critical behaviors near the (tri-)critical end point of QCD within the NJL model

We investigate the dynamical chiral symmetry breaking and its restoration at finite density and temperature within the two-flavor Nambu-Jona-Lasinio model, and mainly focus on the critical behaviors near the critical end point (CEP) and tricritical point (TCP) of quantum chromodynamics. The multi-solution region of the Nambu and Wigner ones is determined in the phase diagram for the massive and massless current quark, respectively. We use the various susceptibilities to locate the CEP/TCP and then extract the critical exponents near them. Our calculations reveal that the various susceptibilities share the same critical behaviors for the physical current quark mass, while they show different features in the chiral limit