Clinical observation of torsional phacoemulsification for a beginner

AIM: To observe the clinical security of torsional phacoemulsification for a beginner.<p>METHODS: The clinical data of 200 eyes who accepted torsional phacoemulsification by a beginner from February 2012 to March 2013 were reviewed. The operation complications were analyzed and the postoperative effect was assessed.<p>RESULTS: There was no collapse of the anterior chamber during operation. When the last nuclear was removed the surge occurred mildly. Posterior capsular rupture happened in 8 eyes, 5 eyes' intraocular lens#IOL#implanted in sclera sulcus after anterior vitrectomy, 3 eyes' IOL in bag without vitreous outflow. One eye without continuous curvilinear capsulotomy was transferred to the superior doctor for extracapsular cataract extraction#ECCE#. One eye with the loose zonular fiber was implanted a capsular tension ring by the superior doctor. Seven cases need suture because of short sclera tunnel incisions. Uncorrected visual acuity a week after operation: 2 eyes#1%#<0.05, 31 eyes#15.5%#0.05-<0.3, 64 eyes#32%#≥0.3, 103 eyes#51.5%#≥0.5. There was no grade 3 corneal edema. The high intraocular pressure can be controlled by anterior chamber penetration or drugs.<p>CONCLUSION: The technique of torsional phacoemulsification is safe and effective for a beginner

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.

Research Trends in Cybercrime and Cybersecurity: A Review Based on Web of Science Core Collection Database

Studies on cybercrime and cybersecurity have expanded in both scope and breadth in recent years. This study offers a bibliometric review of research trends in cybercrime and cybersecurity over the past 26 years (1995-2021) based on Web of Science core collection database. Specifically, we examine the growth of scholarship and the expanded scope of subject categories and relevant journals. We also analyze the research collaboration network based on authors’ affiliated institutions and countries. Finally, we identify major topics within the fields, how each topic relates to – and diverges from – one another, and their evolution over time. Overall, we illustrate the scientific landscape of cybercrime and cybersecurity scholarship by quantitatively synthesizing major components of existing literature. This study offers actionable insights to help researchers identify key research resources, establish/expand collaboration networks, and investigate emerging research topics in this increasingly important domain in criminology and criminal justice

Localization length exponent in two models of quantum Hall plateau transitions

Motivated by the recent numerical studies on the Chalker-Coddington network model that found a larger-than-expected critical exponent of the localization length characterizing the integer quantum Hall plateau transitions, we revisited the exponent calculation in the continuum model and in the lattice model, both projected to the lowest Landau level or subband. Combining scaling results with or without the corrections of an irrelevant length scale, we obtain $\nu = 2.48 \pm 0.02$, which is larger but still consistent with the earlier results in the two models, unlike what was found recently in the network model. The scaling of the total number of conducting states, as determined by the Chern number calculation, is accompanied by an effective irrelevant length scale exponent $y = 4.3$ in the lattice model, indicating that the irrelevant perturbations are insignificant in the topology number calculation.Comment: 10 pages, 8 figure

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