区域金融生态环境差异与经济增长效率

本文利用实证分析的方法，选取金融生态环境不同的地区样本，运用定量指标对影响金融生态环境的诸多要素进行深入对比分析，指出金融不是孤立的，它内生于经济社会的大环境之中。良好的金融生态环境能够营造“资金洼地”，从而促进当地的经济增长；不良的金融生态环境，往往造成巨额的不良资产，导致金融资源的低效配置，不利于经济的发展壮大。因此，改善金融生态环境、促进经济增长，实现经济可持续发展，必须从影响金融生态环境的不同因素及不同层面上加以完善与改进，必须要发挥政府的主导作用，依靠法律的、经济的、文化的乃至全社会的共同努力培育良好的金融生态环境。     

对借贷案件举证责任分配的反思与构建

我国借贷纠纷案件举证责任没有一个具体的分配原则,目前仍处于模糊不清的状态。必须对借贷案件的举证责任进行类型化分配,确定具体的举证责任分配。     

Maximizing benefits in project selection: a hybrid approach

Charitable foundations and government programmes should endeavour to allocate their limited resources to best serve their constituents. Yet, mathematical programming techniques are rarely used despite overwhelming evidence of their superiority in selecting projects that yield higher levels of total benefits. We present a novel ‘hybrid selection model’ that combines binary linear programming and heuristic rank-based models applied to two case studies. The first case focuses on providing services to women and shows a hybrid model would have selected the top three ‘signature’ projects and maintained an above-average overall project benefit while securing a 180% improvement in the number of projects funded, a 66% improvement in the number of women served and a 132% improvement in the total benefit achieved. In the second case, we apply the hybrid approach to data from the US government’s largest forest preservation programme and demonstrate that the hybrid approach could allow the programme to select up to 11 top-scoring projects while still achieving a 97% gain in the total overall benefit compared to their traditional method. These case studies show that the hybrid approach has the potential to be applied in a variety of settings and improve how foundations and programmes achieve their goals.     

社会融资总量与金融宏观调控新目标

社会融资总量是一定时期内实体经济从金融体系获得的全部资金总额,是反映金融业对实体经济资金支持的总量指标。目前,中国人民银行已经启动了对社会融资总量的统计监测工作,并致力于将其作为货币政策新的中介目标。社会融资总量包括信贷融资、证券融资、保险融资、其他融资等多种形式。加强对社会融资总量的统计、监测和调控,能够全面反映整个社会的流动性状况,有利于推进宏观审慎管理。     

Preventing HIV in injection drug users: exploring the tradeoffs between interventions

Injection drug users (IDUs) transmit the human immunodeficiency virus (HIV) via both needle sharing and sex. Available interventions for this population have varying costs and effectiveness and focus on different risk behaviors. In this analysis, we look at two interventions. One is inexpensive, broad-based and provides modest risk reductions (street outreach (SO)); the other is narrowly focused, expensive and relatively effective (methadone maintenance). This analysis explores the effects of population risk behavior, intervention effectiveness, intervention costs, and decision constraints when allocating funds between these two interventions to maximize effectiveness. We develop a model of the spread of HIV, dividing IDUs into susceptibles (uninfected) and infectives, and separately portraying sex and injection risk. We simulate the epidemic in New York City for time periods from the mid-1980s to the early 1990s, and incorporate the behavioral effects of two interventions performed singly or in combination to find the allocation that maximizes the number of infections averted in the IDUs and their noninjecting sex partners, assuming interventions have increasing marginal costs. We find that the optimal allocation nearly always involves spending the maximum allowable amount on SO. This result is largely insensitive to variations in risk parameters, intervention efficacy, or cost. The model's structure, however, makes clear that many factors contribute to this insensitivity, namely the scope of the interventions, the dual drug/sex nature of HIV risk in the population, the asymmetry of sexual risk for men and women, and the potential benefits to nonIDUs.     

一种基于非正交信道的分布式中继选择及功率分配方法

针对非正交两跳多中继协作通信系统中的分布式中继选择问题,提出了一种基于非正 交信道的中继选择准则,简化了系统的设计。分析了其误码率性能,给出了其解析表达式 和以总功率为约束条件下的最优功率分配方案。仿真结果表明,最佳中继选择准则明显优于 传统的中继选择准则,且在最优功率分配方案下,可以获得明显的分集增益,系统的误码率 显著下降。     

地方债发行能否推动实体企业高质量发展？—基于中国A股和新三板制造业上市公司数据的实证研究

对中国2015—2021年制造业上市公司财务报表和地方债数据的关系研究表明：地方债水平的提高能显著提升中国制造业企业全要素生产率。机制分析发现,地方债发行通过缓解融资约束、刺激企业加大研发投入,促进了制造业企业全要素生产率提升,但也减缓了高素质人才的积累。异质性分析发现,专项债比一般债更能显著提升制造业企业全要素生产率,并且地方债发行对提高大中型企业、国有企业、非劳动密集型企业、经济发达地区、低债务水平地区企业的全要素生产率的作用更加显著,进一步研究发现,地方债发行规模与企业高质量发展存在倒U型关系,地方债水平超过0.0773极值后,地方债发行会不利于企业全要素生产率提高,抑制企业高质量发展。研究结论对坚持通过地方债发行促进经济发展和企业高质量发展的政策具有重要现实意义。     

产品的制造成本——以某中国电子制造厂的产品生产成本核算方法为例

本文记录了一个在中国小型电子制造厂的制造成本分析的案例,文章先对比了传统产品成本分析和作业成本分析法,以及动态和静态成本分析的方法,然后展示了成本分析项目的步骤以及做出的一些成本分摊的决定并且阐述了这些决定后面的理由。     

“环保费改税”提高了重污染企业全要素生产率吗？

《环境保护税法》的实施为检验“环保费改税”的效果提供了准自然实验。以2015—2020年沪深A股重污染行业上市公司为样本,采用双重差分模型（DID）检验了“环保费改税”对重污染企业全要素生产率的影响。研究结果表明：“环保费改税”显著提高了税费负担提标地区重污染企业的全要素生产率,整体上支持了“波特假说”;但是,税费负担提标地区重污染企业全要素生产率的提高并非源于“环保费改税”引发的创新补偿效应,而是源于“环保费改税”增加了资源配置效率。上述结果支持了“波特假说”有关“环境规制优化了资源配置效率进而提高企业生产率”的结论。进一步分析发现,“环保费改税”对税费负担提标地区重污染企业全要素生产率的提升效应在民营企业和研发投入强度大的企业中更显著。     

Does bond market development enhance the banking sector’s efficiency in resource allocation? Industry-level evidence from Korea

Korea’s financial system used to be bank-based, with banks playing the leading role in financing corporations. As highlighted by Park et al. (2019), however, bond markets have developed rapidly in Korea and other Asian countries. The corporate bond market competes with banks as a source of finance for large borrowers. As such, bond markets may affect banking sector operation, a process known as disintermediation. In this paper, we examine whether bond market development improves the efficiency of resource allocation in Korean bank lending. We propose two channels through which bond market development affects the efficiency of bank lending. Since the two channels have opposing effects on the efficiency of banking, the issue must be settled by empirical analysis. We find that bank loans are much less efficient than bond financing in allocating resources across industries. Furthermore, banks are particularly inefficient in resource allocation in industries that rely more on bond financing. This suggests that competition from bond financing does not improve allocative efficiency of bank loans.