论我国公共财政条件下的财政投资支出

市场经济体制下的财政应该是公共财政。在公共财政条件下，财政投资支出的必要性在于存在“市场失灵”，因此，财政投资支出的范围和领域就是市场不能有效发挥作用的领域。其中与财政投资支出直接相关的市场失灵领域有：公共产品领域、具有外溢性特征的产品领域、市场不完全的领域。由于我国的市场经济体制还很不完善，因此，我国公共财政条件下财政投资支出的理论依据还在于，财政投资支出要为经济的持续稳定增长和地区经济的协调发展作贡献。我国财政投资支出的领域包括基础设施领域、高新技术领域及部分支柱产业领域。随着社会主义市场经济体制的逐步完善以及公共财政制度的确立与完善，我国财政投资支出的领域会逐步缩小。     

"公安学基础理论"教学法探讨

“公安学基础理论”是一门理论性较强的课程，其中涉及的内容大多较为抽象、枯燥，传统单一的教学方法不利于学生的理解和掌握。文章仅就“公安学基础理论”课堂教学的几种有效方法作简单探讨。     

The benefits brought by space—General public versus space agencies perspectives

Space agencies and governments have been long striving to find justification for the budgets allocated to non-commercial space missions. The most frequent justifications were scientific discoveries, technological development as well as national prestige. The current study aims to have a different look at the question “Which are the benefits brought by space?” by investigating/sampling/interrogating the public opinion and identifying the perception and view of the generation that form the bulk of the taxpaying citizens for the immediate future and will be actively financing any future missions. The study focuses on the answers provided to an online survey by an international sample of population. The target individuals are in the age range of 25–44 and are users of social networks. They are either employed or students, but they are not directly involved with the space sector. The survey aims to establish whether the promotional activities of ESA, NASA and other space agencies are aligned with the perceived benefits of this sample population. Is space contributing to what the target people consider important? What could be done to improve/change this perception? How did the public perception evolve? Which are the biggest problems humanity is confronted with today according to the sample population? Could space help addressing these major problems? The paper will firstly present the statistical analysis of the sample answers and the conclusions that can be drawn from them. In a second step it will compare the perceptions and expectations of the public in regards to space with the current space agencies strategies and identify the gaps and discontinuities.     

公共选修课教学策略的优化整合——以古诗词欣赏为例

采用教学原理,从教学准备、主要教学行为、课堂管理行为、教学评价四个方面对公共选修课课堂教学策略进行优化整合,为公共选修课设计出一套切实可行的课堂教学策略。     

Who’s supporting space activities? An ‘issue public’ for US space policy

Using data from the General Social Survey, this research identifies the issue public of US space policy. Highlighting the need to understand and identify the portion of the public that supports space activities, this study underscores the limited appeal of space for the public as a whole. We find that those who support space activities tend to be younger, male, Republican, and have a higher level of education and socioeconomic status. Because these characteristics make up a relatively small proportion of the American population, those supporting space activities must broaden the appeal of space, making it more accessible and understandable for those with whom the issue does not have much saliency.     

现代小卫星与大众化空间时代

通过论述现代小卫星技术30年的发展历程,总结其技术发展水平并举出现阶段的典型应用实例,讨论小卫星未来的发展方向,论述大众化空间与现代小卫星的关系,总结现代小卫星技术服务于大众化空间的各项特征。     

对质量文化现象的经济观察

基于经济学对生产与服务领域的划分,探讨了不同生产与服务领域质量文化现象的形成和特点,重点研究了公共产品领域的特点及其质量文化现象的独特性,并深入分析了质量文化结构化特征的形成过程。     

Earth observation and UK science policy

This paper examines the way in which Earth observation is linked to UK science policy through the 1993 UK science White Paper and subsequent policy statements, and how the central theme of partnership has been developed in practice. An example of crop yield prediction is given to illustrate the strengths and the weaknesses of the approach. The UK science and space strategies are set in the context of the European Strategy for Space and links are made to the US global change research strategy.     

一类基于可监管区块链的公共安全信息共享平台方案设计

公共安全涉及到应急管理、供应链管理和医疗健康等领域,其数据共享平台对提供全方位、全过程的公共安全服务具有重要意义,尤其在当前的疫情背景下。但目前,由于涉及敏感数据的隐私保护,公共安全数据共享平台的架构设计一直面临着严峻的挑战。基于通过智能合约实现工作流协调和访问控制机制的设计思路,给出了一类基于可监管区块链的新型公共安全信息共享平台方案,并分析了其安全要求的可满足性,展示出依靠可监管区块链的验证机制和智能合约的自动执行,可以使得公共安全信息共享平台流程执行的正确性和数据的隐私需求得到满足。     

主动重心控制功能仿真建模与应用

减小飞行阻力、节省燃油消耗,是主动重心控制功能的重要收益之一,对功能方案的迭代和优化设计具有重要影响。基于主动重心控制技术原理和方案,耦合飞控系统模型、自动飞控系统模型、燃油系统模型、气动力模型、发动机模型和飞机六自由度（6-DOF）模型,建立某型飞机主动重心控制功能仿真模型。该模型计及燃油消耗引起的重心变化的影响,在...