Research progress of the diagnosis and treatment for retinal vein occlusion

Retinal vein occlusion( RVO)is a common vascular disease of the retina and is one of the main reasons for blindness. In recent years,there have been some new understanding about the diagnosis and treatment of the disease,especially some new researches about treatment,for example,in the therapy of the intravitreal injection of triamcinolone acetonide and anti-VEGFs as well as dexamethasone implant(Ozurdex).This article will make a brief summarization of the progress about the diagnosis and treatment of RVO

Research on the Application of Blockchain Technology in the Field of Cross-border Logistics for Small and Medium-sized Enterprises

With the continuous development of the current economic globalization, coupled with the continuous maturity of Internet technology, e-commerce, as a new industry, has been developing rapidly. Cross-border e-commerce has become the mainstream of development in the current economic era. In the process of cross-border e-commerce development, logistics plays an important role. The success or failure of small and medium-sized enterprises also depends on the efficiency and quality of logistics to a great extent. If some cross-border e-commerce enterprises want to get a place in the current fierce market competition, they must choose appropriate logistics channels to effectively promote their own development. This study explores the typical application mode of Blockchain technology in the field of cross-border logistics, and proposes specific implementation path to improve the performance of cross-border logistics management. This study combines the selection of cross-border logistics drive of small and medium-sized enterprises, analyzes the structural framework, core technology and main advantages of Blockchain, and then analyzes the combination of Blockchain technology advantages and cross-border logistics management needs. On this basis, the application mode of Blockchain technology in cross-border supply chain logistics is proposed; the application mode of Blockchain technology in cross-border trade logistics is proposed with information, documents and containers as typical objects; the application mode of Blockchain technology in cross-border customs clearance is proposed with customs declaration as typical carrier. Finally, the paper puts forward the specific implementation path, main success factors and implementation steps of the application of Blockchain technology in cross-border logistics

GIFD: A Generative Gradient Inversion Method with Feature Domain Optimization

Federated Learning (FL) has recently emerged as a promising distributed machine learning framework to preserve clients' privacy, by allowing multiple clients to upload the gradients calculated from their local data to a central server. Recent studies find that the exchanged gradients also take the risk of privacy leakage, e.g., an attacker can invert the shared gradients and recover sensitive data against an FL system by leveraging pre-trained generative adversarial networks (GAN) as prior knowledge. However, performing gradient inversion attacks in the latent space of the GAN model limits their expression ability and generalizability. To tackle these challenges, we propose \textbf{G}radient \textbf{I}nversion over \textbf{F}eature \textbf{D}omains (GIFD), which disassembles the GAN model and searches the feature domains of the intermediate layers. Instead of optimizing only over the initial latent code, we progressively change the optimized layer, from the initial latent space to intermediate layers closer to the output images. In addition, we design a regularizer to avoid unreal image generation by adding a small ${l_1}$ ball constraint to the searching range. We also extend GIFD to the out-of-distribution (OOD) setting, which weakens the assumption that the training sets of GANs and FL tasks obey the same data distribution. Extensive experiments demonstrate that our method can achieve pixel-level reconstruction and is superior to the existing methods. Notably, GIFD also shows great generalizability under different defense strategy settings and batch sizes.Comment: ICCV 202

{Bis[2-(diphenyl­phosphan­yl)eth­yl]phenyl­phosphane-κ3 P,P′,P′′}[(Z)-8-mesityl­cyclo­oct-4-en-1-yl]platinum(II) tetra­fluorido­borate dichloro­methane disolvate

In the title ionic compound, [Pt(C17H23)(C34H33P3)](BF4)·2CH2Cl2, the PtII atom adopts a square-planar coordination geometry with the large (Z)-8-mesityl­cyclo­oct-4-en-1-yl group occupying the fourth coordination site. The (triphos)Pt moiety and the mesityl group are attached to the cyclo­oct-4-ene motif at the 1- and 8-position in a syn configuration. The (BF4)− anion and one of the dichloromethane solvate molecules each are disordered over two sets of sites