Using artificial neural network and multivariate analysis techniques to evaluate road operating conditions

Regional paved roads are low volume roads with a prevalence of heavy traffic. In the world, these roads concern about 80% of the total road network; however, the traffic that affects these roads is about 20%. Since regional roads are characterized by weak demand, budget for their management/maintenance is very low. This produces considerable difficulties in the choice of strategies for maintenance planning and scheduling. For this reason, the recurring topics of research in this field deal with typical roads issues and aim to develop low cost tools and methods. The study proposes a decision support system to evaluate regional paved roads operating condition in relation to the hydrogeological situation. In particular, the system allows to evaluate in a quick and easy manner, the operating conditions of the road, through low-cost tools (i.e. using low economic resources). This is very useful in the case of LVRs because administrations for these roads have a limited budget. The procedure is developed on a regional paved roads network based on more than 80 roads located in Southern Italy. Data is collected by direct surveys in the field and is integrated with cartography and information available in road agency records. From data analysis, obtained using two different techniques, an easy and quick use procedure is made. In particular, Model 1 is built through multivariate analysis and Model 2 using the artificial neural network (ANN) technique. The results show the validity of the two models in Regional paved roads operating conditions estimation in relation to hydrogeological situations of sites. Both models show good reliability. In particular, the first model (Model 1) is characterized by a high level of significance (p < 0.01) and by a coefficient of determination equal to 0.82. Comparative tests between the second model (Model 2) on which standard tests cannot be performed for obvious reasons, and the first model (Model 1). The results show that the ANN model (model 2), characterized by lower residual, simulates more accurately than the second (Model 1).     

英国城乡规划体系及农村规划管理的经验与启示

[目的]对英国城乡规划体系及农村规划管理的发展历程、基本经验和主要特点进行归纳总结,分析其对我国当前加强农业与农村规划管理、推进城乡统筹发展、促进新型城镇化建设的启示和借鉴意义。[方法]基于赴英国进行城乡规划体系及农村规划管理与保护方面的实地考察、培训以及相关文献的综述分析。[结果]英国城乡规划体系建立缘于其解决城镇化发展过程所产生的"大城市病"问题,其发展经历了多次修改和调整,目前形成了"区域空间战略"和"地方发展框架"两级规划结构;英国的城乡规划体系十分注重对农村地区和小城镇的规划管理和保护,形成了一系列重要规则和制度。[结论]英国在城镇化发展过程中,完整地保存了传统乡村的历史建筑、风土文化和景观环境,值得充分学习和借鉴。当前,在统筹城乡发展和推进新型城镇化建设过程中,应充分发挥规划的引导作用和社会公众的参与作用,高度重视对农业与农村的保护和规划管理,同时要注重基于中国国情的再创新。     

家庭承包地“三权”分置的制度逻辑探究 ——基于制度需求与供给的视角

研究目的:阐明"三权"分置的制度逻辑,为制度供给的增量调整提供一种思路。研究方法:文献分析法、政策文本分析法。研究结果:当下农民、新型农业经营者出现新的制度诉求,既有土地承包经权营制度不足以满足该需求。承包地制度供给创新要做实承包权,辨明"三权"分置下经营权所处的位置。土地经营权的权利塑造过程应坚持物债二分法,实现物权法、合同法双重法制途径的并重。研究结论:承包地"三权"分置本质上是理论创新问题,辨清"三权"分置的制度逻辑,仍需以实践需求为出发点,新的制度供给是一个增量调整与立法跟进问题。对经营权性质的探讨有必要融入物债二分逻辑,对于短期限的土地经营权,应按照契约自由原则,实行意思主义,权利类型、权利内容经双方自由创设,对长期存续的土地经营权可实现物权化,实行物权法定主义,按照法定规格与程序流转。     

农地整治项目的治理机制研究——以湖北省和山东省的调查为例

研究目的:基于契约治理和关系治理维度分析农地整治项目治理机制,探究治理机制完善途径。研究方法:理论分析、因子分析、障碍因子诊断。研究结果:(1)农地整治项目契约治理包括控制权配置、风险分担、利益分配和关系协调等机制,关系治理包括信任、承诺、沟通和合作等机制;(2)农户对农地整治项目治理机制的评价(3.50/3.62/3.44)整体处于"一般—比较满意"水平,对政府主导整治项目的评价得分(3.50/3.62)高于非政府主导整治项目得分(3.44);(3)契约治理首位障碍因子为风险分担,关系治理首位障碍因子为沟通;(4)政府主导整治的首位障碍因子为变更通知/技术交底(障碍度5.54%/5.41%),非政府主导整治的首位障碍因子为风险处理程序(障碍度5.42%)。研究结论:合理分担风险、加强信息沟通,是完善农地整治项目治理机制的有效途径;当前农地整治仍应以政府主导为主,非政府主导作为重要的补充形式,还需在实践中继续探索与完善。     

国家审计与国家监察服务腐败治理的路径探索——基于协同视角的思考

随着国家监察体制改革的全面推进，国家监督系统焕发新的生机。国家审计与国家监察作为国家监督系统的重要组成部分，理应充分发挥监督职能以保证国家可持续发展。从国家监察体制改革特点入手，基于受托经济责任观，全面分析国家审计及国家监察分别与腐败治理的相关关系，并以腐败治理为核心，从战略层面、管理层面和结果层面三个层面探求国家审计与国家监察的耦合路径，使两者通过有效耦合路径将监督协同效应发挥到极致，进而保证政府公共受托经济责任全面有效地履行。     

CEO compensation in EU telecom companies: Does the state design the right incentives?

This paper analyzes the structure of CEO pay in European fixed telecommunication companies, focusing on the impact of state ownership. Results show that, under the (partial or total) control of the state, the level of CEO compensation is lower and pay-performance sensitivity is higher than in privately-controlled firms. This finding suggests the state provides an incentive as well as a monitoring effect. However, when the state holds the majority of the shares, the pay level is significantly affected by the CEO power, suggesting that in these firms, CEOs are more likely to be entrenched with boards and succeed in raising their pay.     

Five scale challenges in Ecuadorian forest and landscape restoration governance

The forest and landscape restoration (FLR) targets set as part of the Bonn Challenge draw attention to the governance arrangements required to translate national FLR targets into local action. To achieve the targets, actors at multiple levels of the governance scale aim to influence relevant processes on the ecological scale. In this article, we focus on the scale challenges relating to the implementation of Ecuador’s restoration targets, by analysing the implementation of the 2014–2017 National Forest Restoration Plan in the montane Chocó Andino and Bosque Seco landscapes. From 54 semi-structured interviews, a document review, and geographical data analysis, we identified two temporal (i, ii) and three spatial scale challenges (iii, iv, v): i) Political cycles mismatch with FLR timelines; ii) Planning horizons mismatch with FLR timelines; iii) National restoration objectives mismatch with decentralised land use planning realities; iv) The governance level of existing FLR efforts mismatches with the level receiving restoration funds; and v) Tensions exist between the spatial dimensions of biodiversity and water-related restoration efforts. The findings highlight that more attention must be given to scale-sensitive governance to make the process in which national FLR targets are translated into local action more effective.     

粤港澳大湾区城市群区域治理机制的架构思考:从政府治理权出发

推进建设粤港澳大湾区城市群,尤其应当重视各级政府在该区域治理机制架构中的地位。协调不同法域、不同层级和不同类型地方政府之间的治理权,是推进该城市群协调发展,并率先推进实现新型城镇化转型的基础和保障。就该区域而言,政府治理权的架构可以分为三个层次:根据中央顶层设计的区域布局,推动地方政府转换行使治理权的视阈,合理安排不同地方政府治理权,并建立权力协作机制;由此机制出发,协调区域内各地方的发展方向,深化彼此之间利益共生关系;最后,与利益共享对应,还应当配合财政供给改革,实现区域治理责任的成本共担。     

将“合伙人制”融入“合作制”的一项尝试——基于MGL合作社的案例解读与探讨

当前,合作社异化已成为阻碍合作社进一步发展的痛点,其中"合作制"下社员剩余索取权和控制权的丧失是矛盾核心,因而探求其改进方式对合作社长远发展、实现乡村振兴有重要意义。本文基于效率与公平衡量维度,通过对MGL合作社这一典型案例进行剖析发现,有效的合作社在治理结构和利益分配上具备"合伙人制"特征,并且基本契合不完全契约理论有关能够有效解决契约双方信息不对称以及剩余索取权、控制权被少数社员占有的论述。对此,应充分重视合伙人制在合作社发展中的内在有效性,弱化其是否具有规范的外在形式。     

乡村振兴战略下要素国际流动的环境效果

乡村振兴战略和环境保护是当前经济工作中的重点。伴随经济全球化和“一带一路”战略的不断深入,生产要素国际流动日趋频繁。乡村振兴是国家重要发展战略,其重要抓手是实现农业现代化。因此,在小农户与现代农业共存的经济背景下,分析要素国际流动的环境效果,并根据现代农业发展的不同特征,对乡村振兴战略实施初始阶段和全面实施阶段分别进行分析后发现:在战略实施初始阶段,劳动流入加剧污染,反之改善环境;在战略全面实施阶段,资本流入改善环境,反之恶化环境。