如何正确理解和掌握《建筑电气工程施工质量验收规范》

《建筑电气工程施工质量验收规范》GB50303-2002对金属框架、基础型钢及可开启式门的接地(PE)或接零(PEN)作了明确的规定,但在检查中发现做法不统一,要求不一致的现象仍很普遍,本文就其谈几点看法。     

Discovering bank risk factors from financial statements based on a new semi‐supervised text mining algorithm

This paper aims to comprehensively uncover bank risk factors from qualitative textual risk disclosures reported in financial statements, which contain a huge amount of information on bank risks. We propose a new semi‐supervised text mining approach named naive collision algorithm to analyse the textual risk disclosures, which can more accurately identify bank risk factors compared with the typical unsupervised text mining approach. We identified 21 bank risk factors in total, which is far more than identified in previous studies. We further analyse the importance of each bank risk factor and how the importance of each risk factor changes over time.     

全球柴油发电技术专利信息分析与技术创新态势研究

柴油发电机组是柴油发电的基本载体,其生产以传统机械制造业为基础,技术却涉及机械、电子、自动化等学科,是典型的技术密集型产业。我国的高端产品主要通过专利许可的方式进行生产,关键零部件受制于国外的专利技术约束主要通过进口方式解决,国内该产业发展必须依托转型技术的研发与突破来获取新的竞争优势及后续产业发展的动力。本研究以专利测度技术创新态势为背景,全面分析全球专利数据,剖析柴油发电机组行业的技术态势。     

产业结构转型升级背景下“微笑曲线”理论的发展、形态与创新途径

"微笑曲线"理论是产业升级和供给侧结构性改革的重要指导思想。本文梳理了从"微笑曲线"理论提出至今的大部分文献,按文献研究的基本方法进行整理、编码和分类,套用成熟理论的五种理论形态模型对"微笑曲线"理论形态和未来创新路径进行深入探讨。目前元理论研究不够完善,本质型理论研究匮乏,结构型、演变型和关系型理论缺少规范的实证研究。未来研究中应不断改造、完善学科元理论和概念型理论;理论与实践紧密结合,增强理论深度与广度;从微观层面入手,发现新的研究着力点和创新点。     

光伏产品出口贸易摩擦与技术性贸易措施应对——以福建省为例

截止2019年6月,光伏产业主要遭遇了18起贸易摩擦案件和19项国外技术性贸易措施。本文通过研究这些贸易摩擦案件和技术性贸易措施的特点及其对福建省光伏产业的影响,总结福建省应对工作成效,并针对目前应对工作中存在的问题有针对性的提出了相关建议,旨在为光伏产业今后的应对工作提供借鉴。     

Does an economic incentive affect provider behavior? Evidence from a field experiment on different payment mechanisms

Aims: This study analyzed discrepancies in the quantity of medical services supplied by physicians under different payment systems for patients with different health statuses and illnesses by means of a field experiment.

Methods: Based on the laboratory experiment of Heike Hennig-Schmidt, we designed a field experiment to examine fee-for-service (FFS), capitation (CAP), and diagnosis-related group (DRG) payment systems. Medical students were replaced with 220 physicians as experimental subjects, which more closely reflected the clinical choices made by physicians in the real world. Under the three payment mechanisms, the quantity of medical services provided by physicians when they treated patients with different health statuses and illnesses were collected. Finally, relevant statistics were computed and analyzed.

Results: It was found that payment systems (sig. = 0.000) and patient health status (sig. = 0.000) had a stronger effect on physicians’ choices regarding quantity of medical services than illness types (sig. = 0.793). Additionally, under the FFS and CAP payment systems, physicians overserved patients in good and intermediate health while underserving patients in bad health. Under the DRG payment system, physicians overserved patients in good health and underserved patients in intermediate and bad health. Correspondingly, under FFS and CAP, the proportional loss of benefits was the highest for patients in bad health and the lowest for patients in good and intermediate health; while under DRGs, patients in good and intermediate health had the largest and smallest loss of benefits, respectively.

Limitations: In order to increase external effects of experiment results, we used the field experiment to replace laboratory experiment. However, the external effects still existed because of the blurring and abstraction of the parameters.

Conclusions: Medical treatment cost and price affected the quantity of medical services provided by physicians. Therefore, we proposed that a mix of payment systems could address the common interests of physicians and patients, as well as influence incentives from payment systems.     

科学与技术耦合效果评价——科技互补效应和成本效应分析

考虑到当前创新环境日益复杂化，科学与技术耦合系统已成为一个受系统内外因共同影响而发生演化的开放系统。在为耦合系统构建状态空间模型的基础上，通过求解该模型，刻画科学技术化强度和技术科学化强度，据此分析科学与技术互动产生的互补效应和成本效应，评价29个省份的科学与技术耦合效果，并测度地区科技发展所属耦合路径类型。研究表明，不同省份推进科学技术化进程和技术科学化进程的差异性显著；科学与技术耦合效果最佳并不能说明地区科技发展速度最快；绝大多数省份的科技耦合路径表现为科技中立路径，占比最小的路径为技术强势路径。基于不同省份的耦合情况差异，提出针对性建议。     

试论城市轨道交通信号系统的运营维护管理要点

随着我国城市轨道的发展,在轨道交通动态发展过程中更加重视环境保护。信号系统是城市轨道交通最重要的设备之一,其稳定性对于有效的交通发展和人们出行的人身安全至关重要。但目前,在城市轨道交通信号系统的运营维护管理过程中仍存在问题,若不及时解决,可能会影响轨道交通信号系统的正常运营。因此,论文重点探讨了城市轨道交通信号系统的运营维护管理策略。     

Real earnings management around CEO turnovers

Following CEO turnovers, US firms adjust real business activities to manage earnings downwards (REM bath). This effect is most pronounced in firms with low levels of institutional ownership. REM baths early in CEOs’ tenure can be confounded with legitimate adjustments to business activities. However, we show that they are not accompanied by increases in R&D or capital expenses, nor are they explained by restructuring expenses. CEOs with short tenure record more negative REM measures in their first year of tenure, when compared with CEOs with long tenure.     

Operating cash flow asymmetric timeliness in Australia

Operating cash flow (CFO) asymmetric timeliness occurs when CFO reflects bad news more quickly than good news. We examine the presence and determinants of CFO asymmetric timeliness in Australia, where substantial differences in reporting requirements of cash flow components, in characteristics of listed companies and in the degree of conservative financial reporting produce contrasting findings to those in the United States. We find supportive evidence for the novel ‘sticky cost behaviour’ explanation and also the product-pricing strategy, but not the life cycle hypothesis. These findings are useful for investors and analysts concerned with forecasting the future values of companies.