重叠滤波多音系统的频偏性能分析及优化

重叠滤波多音(O-FMT)是针对滤波多音(FMT)系统频谱利用率低的缺点而根据超奈奎斯特(FTN)概念引入子载波重叠得到的方案。鉴于O-FMT系统在频偏环境下的性能缺陷，理论分析了频偏对系统信号各部分的影响，比较了O-FMT与正交频分复用（OFDM）系统的抗频偏性能。针对频偏性能优化问题，提出了基于最佳线性无偏估计（BLUE）的改进盲估计算法，设计了基于频域滤波器系数的内嵌结构进行频偏补偿。仿真实验表明，O-FMT相比OFDM具有更好的抗频偏能力，改进的盲估计算法估计值精度更高，抗干扰、抗衰落能力更强，设计的频偏补偿结构可以使系统获得更好的性能。     

地理资本视角下村级多维贫困测度及贫困类型划分*——基于重庆市1 919个市级贫困村调研数据

[目的]精确测度村级多维贫困以及划分贫困类型,是当前提高贫困识别精准度,进一步推进农村精准脱贫的战略需求。[方法]文章基于重庆市1 919个市级贫困村的调研数据,构建地理资本视角下村域多维贫困测度指标体系,并采用多维贫困测度模型、指标贡献度模型和最小方差方法系统揭示了重庆市贫困村多维贫困程度、贫困类型及其空间分布特征。[结果](1)重庆市贫困村多维贫困程度呈两端大中间小的"哑铃状"结构,贫困程度极化特征显著,区域发展具有不平衡性。空间分布上,贫困村多维贫困程度呈从渝东北、渝东南分别向渝西地区逐渐减轻的特征,贫困村多维贫困程度存在明显的地域性差异;(2)重庆市贫困村贫困类型主要分为单资本缺失型、双资本缺失型、三资本缺失型、四资本缺失型4个类型,其占比分别为9.07%、20.27%、66.91%、3.75%,三资本缺失型是最主要的贫困类型。[结论]重庆市贫困村致贫因素复杂多样,需要根据各自的贫困特征,因地制宜地开展差别化的帮扶工作。科学推进精准扶贫战略,力争实现2020年全面脱贫。     

论鲁迅笔下封建社会的女性悲剧——以《祝福》中的祥林嫂为例

鲁迅《祝福》中塑造的祥林嫂这一形象,代表了旧式中国劳动妇女的共性,她们被封建礼教束缚、压迫,但不失反抗精神;同时也反映了当时中国社会对妇女的蔑视和欺压。像祥林嫂这样的下层女性,即便勤劳、善良、坚韧,但以她的身体从暴烈到干枯的经历实际上是对封建权力暴行的控诉。她在旧式中国不能争取到一丝尊严,不能得到作为一个人的起码的权利,取而代之的却是被践踏、被奴役、遭压迫、受欺凌。     

Community-based rural residential land consolidation and allocation can help to revitalize hollowed villages in traditional agricultural areas of China: Evidence from Dancheng County,Henan Province

The accelerated rural hollowing driven by vast and increasing out-migration of rural labors under urban–rural dual-track system has imposed huge obstacles on improving land use efficiency and coordinating urban–rural development in China. Taking Dancheng County in Henan Province as an example, this paper analyzes the status quo of rural hollowing and discusses two typical rural residential land consolidation and allocation (RRLCA) practices in traditional agricultural areas (TAAs) of China. The results show that, Dancheng experienced rapid rural hollowing characterized as the hollowing of rural industries, infrastructure, and residential population and settlements. However, Dancheng has considerable potential and the necessity of RRLCA, for the model-based estimation shows that the potential of increasing farmland by carrying out RRLCA was about 5649 ha. The two community-based RRLCA practices show positive effects on the improvement of local living conditions, increment of farmland area and development of rural industries. Their experiences, including self-organized rural planning, democratic decision-making, and endogenous institutional innovation may benefit future RRLCA. Overall, it indicates that promoting community-based RRLCA scientifically according to local conditions could provide an integrated platform for increasing farmland area, developing modern agriculture, promoting new countryside construction, and thus revitalize hollowed villages. On considering the limitations and obstacles of current initiatives, suggestions for future RRLCA in rural China have been put forward.     

Whose village? Stakeholder interests in the urban renewal of Hubei old village in Shenzhen

This article examines the urban regeneration process of Hubei old village in Shenzen, and focuses on interest sharing among stakeholders. Urban regeneration processes are driven by the decreasing availability of construction land in Shenzhen’s city centre due to rapid urbanization and an unplanned, overcrowded urban core. The solution accepted by most stakeholders, i.e., local government, private developers, and urban villagers, is to generate land revenue through the demolition of urban villages like Hubei old village, thus clearing way for Shenzen’s urban development and transformation. However, tenants and small business operators do not benefit from the rising land and property value, and thus do not share the interests of other stakeholders. A further complication to Shenzen’s urban regeneration process is added by those who do not live in Hubei old village but have vocally fought to preserve its architectural heritage. By examining the urban regeneration process of Hubei old village in Shenzhen, this article provides a case study of the complex dynamics of the Hubei urban regeneration program and participatory planning process, taking as a starting point a question posed by an urban villager during an interview: “whose village?”, i.e., who has the right to make decisions on behalf of the urban village?     

做好医院内部审计工作的几点思考

目前,随着我国社会经济的高速发展,医疗产业发展与经营形式的不断变化,医疗资源紧缺与群众就医需求的矛盾凸显,对医疗机构的内控管理提出了更高的要求。完善内部审计机制,优化内控管理的整体质量,不仅是新时期医院实现自我监督的改革路径,同时也是提升医疗资源配置形式,协调不同工作部门责任关系的关键内容。在此基础上,建立现代化内部审计机制,结合医院新时期发展特征,不断调整内控机制中不适应发展需求的部分,已经成为当前阶段医疗机构满足内部发展需求,创新财务管理模式的首要任务。     

新型个人信息保护体系构建研究

大数据时代,传统的以“信息收集”规制为着力点的个人信息保护出现适法性困境,以“知情同意”为框架的机理失灵,个人信息的利用对象从直接个人信息逐渐向间接个人信息过渡,其财产价值凸显,新型个人信息财产权呼之欲出。立法应顺应数字经济的发展,构建合理新型个人信息体系。具体而言:纵向层面,以“宽进+删除权”为具体保护策略;横向层面,在信息主体和信息产业者之间合理配置权利,即信息主体享有个人信息权和个人信息财产权,信息产业者享有信息资产权。     

“面子”背后的人物悲剧——读毛姆的《悲惨命运》

毛姆的短篇小说《悲惨命运》描写主人公动三去拜访朋友,由于碍于"面子",始终说不出告辞的话,最终郁郁寡欢而死。本文试图从语用学"面子"和"礼貌补救策略"的角度分析《悲惨命运》中小人物动三的悲剧因素,阐释人性虚伪带来的悲剧。     

运用战略管理构建高校综合改革体系研究

从战略管理与高校综合改革的关系出发,运用战略管理目标、原则和方法构建了高校综合改革体系,对综合改革提出了顶层设计和具体措施,明确了综合改革的组织管理和战略工具,探讨了改革突破口与实现路径的选择,通过设计战略地图和技术路线图全面指导高校综合改革。     

The impact of farmland property rights security on the farmland investment in rural China

This paper aims to estimate the effect of the security of farmland property rights on land-attached and long-term investment. Based on the data from a nationally representative sample with 5887 plots of 1175 households among 5 provinces in rural China, we adopt Probit, Ordinary Least Squares / Tobit, and the household fixed effect methods to yield the consistent results. The results show that the security of farmland property rights have significant and positive effects on the possibility and amount of the overall farmland investment. However, it has different effects on the different types of investments. The share of farmland retained significantly affects the investments in soil quality improvement and changing use of the plots but does not affect the investment in water conservancy facilities. The types of farmland property rights affect investments in water conservancy facilities and changing use of plots, but do not affect investment in soil quality improvement. The findings imply that the Chinese government should be the principal investor in water conservancy facilities and enlarge the operational scale of farmland by facilitating farmland transfer to increase private investment.