The System Foundation of Public Service ——Thinking About the Rule of Law of Public Service

摘要 当前，围绕着“建设服务型政府”、促进“基本公共服务均等化”等主题，从中央到地方都进行着发展公共服务的探索，而学界对公共服务的研究成为近期的“显学”。但从对相关文献分析可知，目前学界对公共服务的研究主要集中在从经济学或公共管理学视角对公共服务实践经验的总结，缺乏全面、系统地对公共服务制度基础的研究。本文借鉴埃莉诺·奥斯特罗姆的多层次制度分析框架，主要从法学角度采用“纵向制度层次”分析框架分析、论证公共服务的制度基础，在立足国情，借鉴西方先进经验的基础上，对促进我国公共服务法治化进程提出自己的见解。 首先，从宪政制度层面分析、论证公共服务的基础理论、核心理念及基本原则。本文认为，由于...ABSTRACT At present, around “construction of service government” and promoting “the basic public service equalization” etc. topic, the governments from central go to the places are all carry on quest of developing public service , moreover, academic circles to the research of public service become “eminent studies” in the near future. From the analysis to the relevant documents, the study of ...学位：管理学博士院系专业：公共事务学院公共管理系_行政管理学号：1382006015300

Search for dark matter produced in association with bottom or top quarks in √s = 13 TeV pp collisions with the ATLAS detector

A search for weakly interacting massive particle dark matter produced in association with bottom or top quarks is presented. Final states containing third-generation quarks and miss- ing transverse momentum are considered. The analysis uses 36.1 fb−1 of proton–proton collision data recorded by the ATLAS experiment at √s = 13 TeV in 2015 and 2016. No significant excess of events above the estimated backgrounds is observed. The results are in- terpreted in the framework of simplified models of spin-0 dark-matter mediators. For colour- neutral spin-0 mediators produced in association with top quarks and decaying into a pair of dark-matter particles, mediator masses below 50 GeV are excluded assuming a dark-matter candidate mass of 1 GeV and unitary couplings. For scalar and pseudoscalar mediators produced in association with bottom quarks, the search sets limits on the production cross- section of 300 times the predicted rate for mediators with masses between 10 and 50 GeV and assuming a dark-matter mass of 1 GeV and unitary coupling. Constraints on colour- charged scalar simplified models are also presented. Assuming a dark-matter particle mass of 35 GeV, mediator particles with mass below 1.1 TeV are excluded for couplings yielding a dark-matter relic density consistent with measurements