Satellite Broadcasting Enabled Blockchain Protocol: A Preliminary Study

Low throughput has been the biggest obstacle of large-scale blockchain applications. During the past few years, researchers have proposed various schemes to improve the systems' throughput. However, due to the inherent inefficiency and defects of the Internet, especially in data broadcasting tasks, these efforts all rendered unsatisfactory. In this paper, we propose a novel blockchain protocol which utilizes the satellite broadcasting network instead of the traditional Internet for data broadcasting and consensus tasks. An automatic resumption mechanism is also proposed to solve the unique communication problems of satellite broadcasting. Simulation results show that the proposed algorithm has a lower communication cost and can greatly improve the throughput of the blockchain system. Theoretical estimation of a satellite broadcasting enabled blockchain system's throughput is 6,000,000 TPS with a 20 gbps satellite bandwidth.Comment: Accepted by 2020 Information Communication Technologies Conference (ICTC 2020

Heavy Higgs Bosons at Low tan⁡β\tan \beta: from the LHC to 100 TeV

We present strategies to search for heavy neutral Higgs bosons decaying to top quark pairs, as often occurs at low $\tan \beta$ in type II two Higgs doublet models such as the Higgs sector of the MSSM. The resonant production channel is unsatisfactory due to interference with the SM background. We instead propose to utilize same-sign dilepton signatures arising from the production of heavy Higgs bosons in association with one or two top quarks and subsequent decay to a top pair. We find that for heavier neutral Higgs bosons the production in association with one top quark provides greater sensitivity than production in association with two top quarks. We obtain current limits at the LHC using Run I data at 8 TeV and forecast the sensitivity of a dedicated analysis during Run II at 14 TeV. Then we perform a detailed BDT study for the 14 TeV LHC and a future 100 TeV collider.Comment: published version, 22 pages, 15 figures, 3 table

A Study about Impacts of China’s Universal Two-child Policy on Chinese Professional Women

The thesis studies China’s Universal Two-child Policy (全面二孩政策) from the perspective of Chinese professional female, as it tries to examine the impacts of the new population policy on Chinese professional women’s family life and career development. This empirical work wants to give voice for Chinese female, and raise more attention to their rights under the new social policy background. The survey data was collected by online interviews in Beijing between January 2021 and February 2021. There were in total 23 informants, all of them were Chinese nationals between 20 to 48 years old. All the interviews were conducted in the Chinese language. The data gained from the interviews were analyzed in combination with existing literature findings. The Universal Two-child Policy does re-emancipate Chinese women’s reproductive rights to a certain extent, tends to provide more support in family elderly-care, and helps to enhance people’s family happiness level. On the other hand, it leads to adverse effects on the health, economic status and family relationships of most professional women. The two-child policy also intensifies the original invisible employment discrimination, causing pregnancy and childbirth to become main barriers in women’s job-hunting and career promotion. Coupled with the influence of Chinese traditional gender order, and the lack of social support, more and more Chinese professional women are facing dilemmas in both family and society during the two-child era. An in-depth understanding of Chinese professional women’s childbearing willingness and the impacts of the two-child policy on them will help to interpret the changes in China’s fertility level and birth rate, so as to find out practical guidance for the next step in adjusting China’s population policy