다중혈관 관상동맥 환자에서 y-문합을 이용하여 양쪽 내흉동맥만을 사용한 우회술의 조기 성적

비만아 부모의 돌봄 경험: q 방법론

With prevalent attacks in communication, sharing a secret between communicating parties is an ongoing challenge. Moreover, it is important to integrate quantum solutions with classical secret sharing schemes with low computational cost for the real world use. This paper proposes a novel hybrid threshold adaptable quantum secret sharing scheme, using an m-bonacci orbital angular momentum (OAM) pump, Lagrange interpolation polynomials, and reverse Huffman-Fibonacci-tree coding. To be exact, we employ entangled states prepared by m -bonacci sequences to detect eavesdropping. Meanwhile, we encode m -bonacci sequences in Lagrange interpolation polynomials to generate the shares of a secret with reverse Huffman-Fibonacci-tree coding. The advantages of the proposed scheme is that it can detect eavesdropping without joint quantum operations, and permits secret sharing for an arbitrary but no less than threshold-value number of classical participants with much lower bandwidth. Also, in comparison with existing quantum secret sharing schemes, it still works when there are dynamic changes, such as the unavailability of some quantum channel, the arrival of new participants and the departure of participants. Finally, we provide security analysis of the new hybrid quantum secret sharing scheme and discuss its useful features for modern applications.

Hybrid threshold adaptable quantum secret sharing scheme with reverse Huffman-Fibonacci-tree coding

Friction stir welding/processing of metals and alloys: A comprehensive review on microstructural evolution

Aluminum metal matrix composites (AMMCs) used in different industries from automotive to aerospace for specific purposes. Many problems hinder the full-scale industrialization of AMMCs but the main problems include wettability, particle distribution, porosity, and chemical reaction. These problems have explicit effects on mechanical, wear, and corrosion resistance properties of the composite materials. Therefore, it is essential to cope up with these problems for better quality of AMMCs. This paper focuses on issues related to AMMCs fabrication, corrosion resistance, wear resistance, machining parameter optimization, and chip analysis of AMMCs. Literature provides a guideline to researchers about present scenario of AMMC fabrication using stir casting process. Moreover, paper presents properties and applications of AMMCs.

Processing issues, machining, and applications of aluminum metal matrix composites

In this study, AA6061–SiC composites were synthesized through spark plasma sintering and hot rolling. The microstructures of these composites exhibited excellent SiC particle distribution in the AA6061 matrices, high dislocation density, and ultrafine Al matrix grain. The AA6061–SiC composites strengthened with increasing amounts of SiC particles. The yield strength, ultimate tensile strength, and elasticity modulus of the composites were 373 MPa, 414 MPa, and 95 GPa, respectively, when the volume fraction of SiC was 20%. The composites exhibited dislocation, grain boundary, and secondary phase strengthening. The ductility of the composites decreased with increasing amounts of SiC particles, and the fracture mode was ductile.

C.Y. Liu

Papers

Microstructures and mechanical properties of AA6061–SiC composites prepared through spark plasma sintering and hot rolling

Evaluation of microstructure, damping capacity and mechanical properties of Al-35Zn and Al-35Zn-0.5Sc alloys

Hot Deformation Behaviour of SiC/AA6061 Composites Prepared by Spark Plasma Sintering

Quench sensitivity and microstructures of high-Zn-content Al−Zn−Mg−Cu alloys with different Cu contents and Sc addition

Precipitation behavior and mechanical properties of Al–Zn–Mg alloy with high Zn concentration