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Citation analysis of the scientific literature has been used to study and define disciplinary boundaries, to trace the dissemination of knowledge, and to estimate impact. Co-citation, the frequency with which pairs of publications are cited, provides insight into how documents relate to each other and across fields. Co-citation analysis has been used to characterize combinations of prior work as conventional or innovative and to derive features of highly cited publications. Given the organization of science into disciplines, a key question is the sensitivity of such analyses to frame of reference. Our study examines this question using semantically themed citation networks. We observe that trends reported to be true across the scientific literature do not hold for focused citation networks, and we conclude that inferring novelty using co-citation analysis and random graph models benefits from disciplinary context.

Background: Psychosocial interventions have emerged as an important component of a comprehensive therapeutic approach in early-onset schizophrenia, typically representing a more severe form of the disorder. Despite the feasibility and efficacy of Theory of Mind (ToM) psychotherapy for schizophrenia, relatively little is known regarding the neural mechanism underlying its effect on early-on-set schizophrenia. Methods: We performed a randomized, active controlled trial in patients with early-onset schizophrenia, who were randomly allocated into either an intervention (ToM psychotherapy) or an active control (health education) group. Diffusion tensor imaging data were collected to construct brain structural networks, with both global and regional topological properties measured using graph theory. Results: We enrolled 28 patients with early-onset schizophrenia in our study. After 5 weeks of treatment, both the intervention and active control groups showed significant improvement in psychotic symptoms, yet the improvement was greater in the intervention group. Importantly, in contrast with no brain structural network change after treatment in the active control group, the intervention group showed increased nodal centrality of the left insula that was associated with psychotic symptom improvement. Limitations: We did not collect important information concerning the participants' cognitive abilities, particularly ToM performance. Conclusion: These findings suggest a potential neural mechanism by which ToM psychotherapy exerts a beneficial effect on early-onset schizophrenia via strengthening the coordination capacity of the insula in brain structural networks, which may provide a clinically translatable biomarker for monitoring or predicting responses to ToM psychotherapy. Clinical trial registration: NCT05577338; ClinicalTrials.gov, Introduction Schizophrenia is a chronic mental disorder expressed as a complex behavioural syndrome with a heterogeneous combination of psychotic symptoms (e.g., delusions, hallucinations and disorganization) and cognitive dysfunctions, which may [...]

In order to adapt to the rapid development of green plant extract corrosion inhibitors, spinach extract (SPE) was selected as a corrosion inhibitor for Q235 steel in citric acid (CA) environment. SPE was extracted using a simple ethanol reflux method, and its main components, as well as their stability in CA, were confirmed through Fourier transform infrared spectroscopy (FTIR) and ultraviolet-visible spectroscopy (UV-Vis). The corrosion inhibition performance of SPE on Q235 steel in 0.5 mol/L CA solution was investigated using various methods including weight loss, dynamic potential polarization (PDP), linear polarization resistance (LPR), electrochemical impedance spectroscopy (EIS), scanning electron microscopy (SEM), energy dispersive spectroscopy (EDS) and contact angle measurements. Effects of temperature on the activation parameters (Ea, were studied by calculation. Results showed that chlorophyll was the main component of SPE, which exhibited good stability in a 0.5 mol/L CA solution. Furthermore, SPE significantly reduced the corrosion rate of Q235 steel in the 0.5 mol/L CA medium, acting as a mixed corrosion inhibitor for both cathodic and anodic reactions. With the increase of SPE concentration, both cathodic and anodic currents were reduced, active corrosion sites were blocked, the corrosion rate was decreased, and the corrosion inhibition efficiency was enhanced. The corrosion inhibition efficiency of Q235 steel obtained by weight loss method, PDP, LPR and EIS was more than 80% with 2.134 g/L of SPE concentration at 303 K. With the increase of system temperature, the corrosion inhibition efficiency of SPE on Q235 steel decreased, but the change was smaller. Compared to the blank system, the activation energy (Ea) of the system significantly increased after the addition of SPE. The effective components of SPE adsorped to the surface of Q235 steel in accordance with the Langmuir isotherm, predominantly through physical adsorption, and were characterized as monolayer adsorption. SPE exhibited good corrosion inhibition performance for Q235 steel in a 0.5 mol/L CA solution system, which was a green corrosion inhibitor with good application prospects in the pickling field. It could provide certain guidance for the development of plant extract-based corrosion inhibitors.

Research on how COVID-19 school closures impacted the learning of young children is still sparse, and the broader implications of these findings have yet to be fully explored. In this study, we examine the impacts of COVID-19 school closures on language and literacy development in a state-funded pre-K program in a Florida school district. Using COVID closures as a natural experiment, we additionally explore the implications of these findings for the literature on the efficacy and dosage of state-funded pre-K programs. We used propensity score matching to compare children from the COVID cohort (n = 1,211) to children from a pre-COVID cohort (n = 1,167). Results revealed no significant difference on the Florida Kindergarten Readiness Screener (FLKRS) assessment between the two cohorts at kindergarten entry. The COVID cohort had significantly higher scores on each of the individual subdomains of the FLKRS than the pre-COVID cohort, with especially large positive effect sizes for constrained literacy skills. Results indicate that COVID-19 closures did not have significant negative impacts on pre-K children's language and literacy skills at kindergarten entry. Findings further suggest that state-funded pre-K programs with comparatively less funding and lower quality ratings may not provide adequate support for children's language and literacy outcomes.

Drawing on Carol Bacchi's post-structural analytical approach, this study examines the nature of recent policy reforms in China in relation to vocational education (VE). The article reveals key problem representations that characterise the "Implementation Plan of National Vocational Education Reform" (IPNVER) issued by the State Council of the People's Republic of China (PRC) in 2019, and how these have arisen in light of previous reforms. These previous reforms relate to China's policies, laws and regulations with respect to the higher vocational education system since the 'opening up' in 1978. The study reveals that the VE policy in China is strongly governed by 'economic logics' in the context of neoliberal globalisation, even as it exhibits various 'Chinese characteristics', and that developing VE is seen as a solution to promoting Chinese economic and social development. However, at the same time, important issues are also 'silenced' as a result of the dominance of more economic logics in national VE policy. The article suggests policymakers need to pay more attention to developments in regional education, the social welfare issues of poorer working urban and rural peoples, and the mental health of citizens, while developing the national economy.