Transparency and Resource Allocation of Grassroots Nonprofits in China

VOLUNTAS: International Journal of Voluntary and Nonprofit Organizations - Organizational transparency has become a prominent concern for the nonprofit sector as it expands globally. Transparency...     

真伪之辩——基于新近材料的“海德格尔事件”核心问题研究

新近出版的《海德格尔兄弟通信集》为“海德格尔事件”研究的突破性进展提供了非常重要的文本资料，为澄清诸多疑难问题提供了一个关键契机。受此推动，本文将对“海德格尔事件”的核心问题展开追问:海德格尔在校长任职动机问题上的自我辩护是谎言还是事实?胡戈·奥特在其研究中批评海德格尔的辩护乃是撒谎，这一判断以种种变式影响着今天的《黑皮笔记》研究;但依据更多材料和更严谨的分析，可以看出奥特这一具有重大影响力的研究工作存在严重漏洞，扭曲了事实，而多年来一直被质疑的海德格尔自我辩护反倒符合事实。这一发现不仅揭示出了重新全面解读“海德格尔事件”的必要性，而且推动着我们去沉思相关论战一再爆发的深层原因，这将有助于我们走上真正的疑难澄清之路。     

A quadratic time exact algorithm for continuous connected 2-facility location problem in trees

This paper studies the continuous connected 2-facility location problem (CC2FLP) in trees. Let \(T = (V, E, c, d, \ell , \mu )\) be an undirected rooted tree, where each node \(v \in V\) has a weight \(d(v) \ge 0\) denoting the demand amount of v as well as a weight \(\ell (v) \ge 0\) denoting the cost of opening a facility at v, and each edge \(e \in E\) has a weight \(c(e) \ge 0\) denoting the cost on e and is associated with a function \(\mu (e,t) \ge 0\) denoting the cost of opening a facility at a point x(e, t) on e where t is a continuous variable on e. Given a subset \(\mathcal {D} \subseteq V\) of clients, and a subset \(\mathcal {F} \subseteq \mathcal {P}(T)\) of continuum points admitting facilities where \(\mathcal {P}(T)\) is the set of all the points on edges of T, when two facilities are installed at a pair of continuum points \(x_1\) and \(x_2\) in \(\mathcal {F}\), the total cost involved in CC2FLP includes three parts: the cost of opening two facilities at \(x_1\) and \(x_2\), K times the cost of connecting \(x_1\) and \(x_2\), and the cost of all the clients in \(\mathcal {D}\) connecting to some facility. The objective is to open two facilities at a pair of continuum points in \(\mathcal {F}\) to minimize the total cost, for a given input parameter \(K \ge 1\). This paper focuses on the case of \(\mathcal {D} = V\) and \(\mathcal {F} = \mathcal {P}(T)\). We first study the discrete version of CC2FLP, named the discrete connected 2-facility location problem (DC2FLP), where two facilities are restricted to the nodes of T, and devise a quadratic time edge-splitting algorithm for DC2FLP. Furthermore, we prove that CC2FLP is almost equivalent to DC2FLP in trees, and develop a quadratic time exact algorithm based on the edge-splitting algorithm. Finally, we adapt our algorithms to the general case of \(\mathcal {D} \subseteq V\) and \(\mathcal {F} \subseteq \mathcal {P}(T)\).     

人工智能辅助地方立法的应用与规制

我国地方立法权随着2015年《立法法》的修改扩至所有设区的市，随之掀起地方立法热潮。但目前地方立法的质量普遍不高，存在诸多问题，人工智能技术的应用能为地方立法开辟新路径。基于互联网及大数据的人工智能，能被应用于资料检索、立项论证、立法公开与意见征集、辅助草案起草、立法后评估与备案审查。与此同时，当人工智能被应用于地方立法工作时，需要确立“辅助原则”，规范人工智能地方立法程序的选用标准，限制人工智能地方立法程序的算法，以此来规制人工智能带来的不利影响。     

西方中世纪宗教与世俗二元文化影响下的声乐现象解析

作为Bel Canto声乐体系的萌芽期,西方中世纪时期的声乐艺术在宗教与世俗二元文化的作用下,呈现出前所未有的繁荣发展。宗教文化中的声乐现象以服务宗教仪式为宗旨,以格里高利圣咏为中心,围绕对圣咏的修饰和扩展,逐步体现着作品体裁、表演形式以及歌唱技术的全面复杂化趋势。而世俗文化中的声乐现象在充分展示世俗文化特征的同时,又无法避免地接受强大宗教文化的浸染。二者在对立与并存中共同推动着Bel Canto声乐艺术的系统化构建,为Bel Canto声乐体系的主体形成提供了充分的素材。     

Towards Uniformly Efficient Trend Estimation Under Weak/Strong Correlation and Non‐stationary Volatility

In this paper, we consider the deterministic trend model where the error process is allowed to be weakly or strongly correlated and subject to non‐stationary volatility. Extant estimators of the trend coefficient are analysed. We find that under heteroskedasticity, the Cochrane–Orcutt‐type estimator (with some initial condition) could be less efficient than Ordinary Least Squares (OLS) when the process is highly persistent, whereas it is asymptotically equivalent to OLS when the process is less persistent. An efficient non‐parametrically weighted Cochrane–Orcutt‐type estimator is then proposed. The efficiency is uniform over weak or strong serial correlation and non‐stationary volatility of unknown form. The feasible estimator relies on non‐parametric estimation of the volatility function, and the asymptotic theory is provided. We use the data‐dependent smoothing bandwidth that can automatically adjust for the strength of non‐stationarity in volatilities. The implementation does not require pretesting persistence of the process or specification of non‐stationary volatility. Finite‐sample evaluation via simulations and an empirical application demonstrates the good performance of proposed estimators.     

多传感器楼宇火灾预警系统设计

为有效进行楼宇火灾预警,及时疏散人员、减少损失,设计基于多传感器的楼宇火灾预警系统.采用多种传感器获得较多的环境信息,通过无线通信技术进行信息的传输,避免了因传输介质连接所引起的弊端,提高了系统的可靠性.各组件之间的配置与控制由单片机完成,在数据处理方面通过设定阈值达到预警目的.     

风险控制对众包创新模式有效性的杠杆作用研究

随着"互联网+"在各个领域的广泛应用,众包创新平台应运而生。众包创新作为协同创新的一种模式,基于互联网平台为企业提供创新服务,可以有效提升企业核心竞争力。基于风险感知理论与风险控制相关文献,从平台风险控制角度,以猪八戒众包创新平台为例,采用数据挖掘技术获取平台一手数据,利用层次回归模型研究风险控制机制对众包创新平台有效性的影响。研究发现:通过建立接包方服务绩效评价体系与平台功能风险控制(保证金及接包商信誉评级)可以降低发包方对众包创新的感知风险,从而增强众包创新平台有效性。在两种风险控制机制的交互作用下,平台的有效性会得到进一步提升。此结论有助于众包创新平台运营及服务监管,促进平台交易环境向正规化、有序化方向发展,提升平台竞争力。     

乡村振兴视角下农村义务教育优质均衡发展研究

实施乡村振兴战略为新时代乡村建设提供了新的发展动力,与此同时也为农村义务教育发展创造了前所未有的契机。根据当前农村义务教育存在的实际问题和不断推进的乡村振兴发展进程,必须以乡村振兴为战略支撑,着力提升农村义务教育服务水平;优化办学条件,完善农村公共基础设施;加强乡村教师队伍建设,缩减城乡教师资源差距;稳定农村义务教育生源;切实解决农村义务教育投入问题,以实际的发展成效逐步实现农村义务教育与乡村振兴同步发展、融合发展的目标要求。     

土族组成成分分析

本文根据《甘肃新通志》、《明实录》的记载,分析了清末13159户土族的组成情况。