VGGFace2: A dataset for recognising faces across pose and age

In this paper, we introduce a new large-scale face dataset named VGGFace2. The dataset contains 3.31 million images of 9131 subjects, with an average of 362.6 images for each subject. Images are downloaded from Google Image Search and have large variations in pose, age, illumination, ethnicity and profession (e.g. actors, athletes, politicians). The dataset was collected with three goals in mind: (i) to have both a large number of identities and also a large number of images for each identity; (ii) to cover a large range of pose, age and ethnicity; and (iii) to minimize the label noise. We describe how the dataset was collected, in particular the automated and manual filtering stages to ensure a high accuracy for the images of each identity. To assess face recognition performance using the new dataset, we train ResNet-50 (with and without Squeeze-and-Excitation blocks) Convolutional Neural Networks on VGGFace2, on MS- Celeb-1M, and on their union, and show that training on VGGFace2 leads to improved recognition performance over pose and age. Finally, using the models trained on these datasets, we demonstrate state-of-the-art performance on all the IARPA Janus face recognition benchmarks, e.g. IJB-A, IJB-B and IJB-C, exceeding the previous state-of-the-art by a large margin. Datasets and models are publicly available.Comment: This paper has been accepted by IEEE Conference on Automatic Face and Gesture Recognition (F&G), 2018. (Oral

Systematic Literature Review: the Sustainable Development of Small and Medium-Sized Enterprises Under the Trend of Globalization

Purpose: The development of small and medium-sized enterprises (SMEs) often faces such problems as shortage of funds and backward technology. The systematic literature review on sustainable development (SD) of SMEs can help accelerate the pace of SMEs' information management construction and promote enterprises' development and growth. A systematic literature review (SLR) was conducted on empirical data on the sustainable development of small and medium-sized enterprises in China and abroad from 2000 to 2022.   Theoretical framework: Systematic review/meta-analysis refers to a research method that comprehensively collects all relevant studies, conducts rigorous evaluation and analysis one by one, and then uses quantitative or qualitative synthesis methods to process the data to reach comprehensive conclusions (Pansare et al., 2023).   Design/methodology/approach: This literature review covers 50 articles from peer-reviewed academic journals related to their theoretical area, research design, sampling/data collection methods, data analysis, and thematic areas. The Preferred Reporting Items for Systematic Review and Meta-Analysis (PRISMA) statements were used to analyze this study’s systematic literature review.   Findings: The result illustrated that numerous research had been done during the past twenty years and new findings are involved with this topic area. SMEs attach more and more importance to the goal of SD and adopt systematic, structured, and formalized ways to promote the SD of enterprises.   Research, Practical & Social implications: Several pieces of literature can cover the aspects of ecological entrepreneurship, innovation, business, and environment, which are positively correlated with SD.   Originality/value: This paper summarizes existing research results, which can provide research references for the SD of SMEs

Anisotropic Rabi model

We define the anisotropic Rabi model as the generalization of the spin-boson Rabi model: The Hamiltonian system breaks the parity symmetry; the rotating and counter-rotating interactions are governed by two different coupling constants; a further parameter introduces a phase factor in the counter-rotating terms. The exact energy spectrum and eigenstates of the generalized model is worked out. The solution is obtained as an elaboration of a recent proposed method for the isotropic limit of the model. In this way, we provide a long sought solution of a cascade of models with immediate relevance in different physical fields, including i) quantum optics: two-level atom in single mode cross electric and magnetic fields; ii) solid state physics: electrons in semiconductors with Rashba and Dresselhaus spin-orbit coupling; iii) mesoscopic physics: Josephson junctions flux-qubit quantum circuits.Comment: 5 pages+ 6 pages supplementary, 7 figures, accepted by Phys. Rev.

1-Ethyl-4-hydr­oxy-9-aza­tricyclo­[7.4.1.02,7]tetra­deca-2,4,6-trien-8-one

In the mol­ecule of the title compound, C15H19NO2, the six-membered dihydro­pyridinone ring assumes a screw-boat conformation. In the crystal structure, mol­ecules are linked via O—H⋯O hydrogen bonding between hydr­oxy and carbonyl groups, forming supra­molecular chains along the a axis

3-[(3S)-3-Ethyl-1-methyl­azepan-3-yl]phenyl N-(4-fluoro­phen­yl)carbamate

The asymmetric unit of the title compound, C22H27FN2O2, a (−)-S-meptazinol derivative, contains two mol­ecules. The azepane ring adopts a similar twist chair form in both mol­ecules, while the dihedral angles between the two benzene rings are 88.17 (14) and 89.93 (14)° in the two mol­ecules. The absolute configuration of the mol­ecule was determined from the synthetic starting material. The crystal structure is stabilized by classical inter­molecular N—H⋯O hydrogen bonds

Research on the key technologies of web parts library in product configuration system

AbstractIn order to build a web-based parts library for the product configuration system, the data description norm, web browsing and application methods are researched. An ontology based data description norm is used to build the web parts library, with the help of product family and the article characteristic table. A plug-in file of Autovue is adapted for web-based browsing and interaction of geometric models of parts. The schema of Application Services Provider is used to realize the application of web parts library in the product configuration system. Empirical results show that the methods are feasible. And the library has been shown to illustrate the concept. The ontology based data description norm can solve the standardization problem. The plug-in file can show the online 3D demo of parts. And the application of ASP can help more companies to use the web parts library. These technologies help to build and use the library