Correction: Computer-aided design of high-efficiency GeTe-based thermoelectric devices

Correction for ‘Computer-aided design of high-efficiency GeTe-based thermoelectric devices’ by Min Hong et al., Energy Environ. Sci., 2020, DOI: 10.1039/d0ee01004a. The authors regret errors in the author affiliations in the original manuscript. The corrected list of authors and affiliations for this paper is as shown above. The Royal Society of Chemistry apologises for these errors and any consequent inconvenience to authors and readers

Enterprise Digital Transformation and Regional Green Innovation Efficiency Based on the Perspective of Digital Capability: Evidence from China

Under the dual pressure of economic development and environmental protection, it is urgent that we improve the efficiency of green innovation. Enterprise digital transformation brings opportunities to improve the efficiency of green innovation. However, most current studies focus on the relationship between the two from the micro level, ignoring the impact of enterprise digital transformation on the green innovation of other innovation entities within the region, and have not yet described it in detail from the perspective of digital capabilities. Therefore, based on Chinese data, this paper studies the impact of enterprise digital transformation on regional green innovation efficiency from the perspective of digital capability, and provides a theoretical reference for improving regional green innovation efficiency. The research shows that (1) the digital capabilities of enterprise digital transformation include digital acquisition capability, digital utilization capability, and digital sharing capability, which have significant promoting effects on regional green innovation efficiency; (2) strengthening information resources, knowledge resources, R&D funds, and human resources are the role channels indicated by mechanism analysis; (3) heterogeneity analysis shows that the promotion effect is not related to geographical location, but the disadvantaged areas of enterprise digital transformation and regional green innovation efficiency have a greater impact. Further, the applicability of the research conclusions is extended through case studies in other countries. This study enriches the research perspective of the relationship between enterprise digital transformation and green innovation, and provides a new path for regional sustainable development

Facile fabrication of polystyrene particles/graphene composites for improved dielectric and thermal properties

In this paper, polystyrene (PS)-based reduced graphene oxide (rGO) composites were prepared by mixing PS latex particles with graphene oxide (GO) and the following in-situ reduction. The structure and morphology of PS/rGO composites were characterized, and the effects of rGO content on the dielectric properties as well as thermal stability of PS/rGO composites were investigated. Results showed that rGO sheets armoured on the surface of PS particles and exhibited well dispersion in the PS matrix after hot compression. The introduction of rGO improved the dielectric properties of the composites remarkably. When rGO content was 0.12 vol%, the dielectric permittivity and breakdown strength of PS/rGO arrived at 6.3 at102 Hz and 107 kV/mm, with 50% and 35.4% enhancement compared to the pristine PS. Furthermore, PS/rGO presented better thermal stability than the pristine PS, but the overlapping of rGO sheets in PS matrix induced the instability of dielectric loss with frequency

Incentive Compatible Moving Target Defense against VM-Colocation Attacks in Clouds

Part 10: Security and Trust ModelsInternational audienceCloud computing has changed how services are provided and supported through the computing infrastructure. However, recent work [11] reveals that virtual machine (VM) colocation based side-channel attack can leak users privacy. Techniques have been developed against side-channel attacks. Some of them like NoHype remove the hypervisor layer, which suggests radically changes of the current cloud architecture. While some other techniques may require new processor design that is not immediately available to the cloud providers.In this paper, we propose to construct an incentive-compatible moving-target-defense by periodically migrating VMs, making it much harder for adversaries to locate the target VMs. We developed theories about whether the migration of VMs is worthy and how the optimal migration interval can be determined. To the best of our knowledge, our work is the first effort to develop a formal and quantified model to guide the migration strategy of clouds to improve security. Our analysis shows that our placement based defense can significantly improve the security level of the cloud with acceptable costs

T cell-mediated tumor killing patterns in head and neck squamous cell carcinoma identify novel molecular subtypes, with prognosis and therapeutic implications.

As an important process in cancer immunotherapy, T cell-mediated tumor killing (TTK) enhances the immune response of patients. However, the role of TTK in Head and Neck Squamous Cell Carcinoma (HNSCC) patients still needs further exploration. Therefore, we comprehensively analyzed the gene expression information and clinical characteristics of 1063 HNSCC in five cohorts. Univariate regression, differential expression analysis, and gene mutation profiling were combined to identify the important genes regulating the sensitivity of tumor cells to T cell-mediated killing (GSTTK) in HNSCC. A total of 20 GSTTK were identified as important genes of HNSCC. Patients were divided into C1 and C2 subgroups (TTK patterns) and displayed significant prognostic differences. Patients with C2 subtype had dismal prognosis characteristic compared to C1 subtype in all validation cohorts. Patients with C1 subgroup exhibited robust immune profile and C1 subgroup patients were significantly enriched in metabolically relevant functions. Notably, the multi-omics analysis found that C1 subgroup have higher mutation burden and C2 subgroup patients had significantly higher copy number variation. Drug sensitivity analysis found that multiple first-line chemotherapeutic drugs were more sensitive in patients with subgroup C1. In conclusion, the establishment of GSTTK provides guidance and assistance to clinicians in the personalized management and treatment of HNSCC patients