Human Rights Dilemma of Migration Targets in the 2030 Agenda for Sustainable Development

The 2030 Agenda for Sustainable Development explicitly and specifically includes migration in the global development agenda for the first time, and establishes relevant targets, including promoting regular migration and protecting the rights of migrant workers. These targets are significant achievements of the United Nations in promoting the topic “Migration and Development” and strengthening the human rights-based global migration governance.However, there are many difficulties in achieving these targets, especially when the rights of regular and irregular migration are undermining national sovereignty and security, or are not in line with national development needs. With the continued spread of the CoVID-19pandemic, rising tensions among major powers, and the prevalence of populism and anti-foreigner sentiment in the West, the process of migration and development has been seriously influenced, and the divergent positions and conflicting interests of countries have pushed the migration targets further out of reach. However, in the long run,exploration in this area will help promote global economic recovery in the post-pandemic era and benefit all parties from the positive interactions of migration, development, and human rights.

Quantitative determination of anti-structured defects applied to alloys of a wide chemical range

Anti-structured defects bridge atom migration among heterogeneous sublattices facilitating diffusion but could also result in the collapse of ordered structure.Component distribution Ni（75）AlxV（25-x） alloys are investigated using a microscopic phase field model to illuminate relations between anti-structured defects and composition,precipitate order,precipitate type,and phase stability.The Ni（75）AlxV（25-x） alloys undergo single Ni3V（stage Ⅰ）,dual Ni3Al and Ni3V（stage Ⅱ with Ni3V prior;and stage Ⅲ with Ni3Al prior）,and single Ni3Al（stage Ⅳ） with enhanced aluminum level.For Ni3V phase,anti-structured defects（V（Ni1）,Niy,except V（Ni2）） and substitution defects（Al（Ni1）,Al（Ni2）,Alv） exhibit a positive correlation to aluminum in stage I,the positive trend becomes to negative correlation or smooth during stage Ⅱ.For Ni3 Al phase,anti-structured defects（Al（Ni）,Ni（Al）） and substitution defects（V（Ni）,V（Al）） have a positive correlation to aluminum in stage Ⅱ,but Ni（Al） goes down since stage Ⅲ and lasts to stage Ⅳ.V（Ni） and V（Al） fluctuate when Ni3Al precipitates prior,but go down drastically in stageⅣ.Precipitate type conversion of single Ni3V/dual（Ni3V＋Ni3Al） affects Ni3V defects,while dual（Ni3V＋Ni3Al）/single Ni3 Al has little effect on Ni3Al defects.Precipitate order swap occurred in the dual phase region affects on Ni3Al defects but not on Ni3V.