复杂地质条件下高面板堆石坝工程质量控制措施阐述

在复杂地质条件下,需要加强高面板堆石坝工程质量管控工作,严格地按照国家出台的质量安全责任规章,提高建设质量。论文主要围绕高面板堆石坝工程、工程质量控制措施两个方面进行探讨,确保混凝土面板堆石坝的施工质量。     

论移动应用平台的运维运营及技术管控工作

电力企业在移动信息化技术方面也迈出了步伐,开展电力业务现场作业、物资与基建的现场作业、故障抢修等班组作业应用,本文主要讨论移动应用平台的运维和技术管控工作,为移动应用平台的建设和发展提供一种工作思路。     

20kV及以下配电网工程造价的确定与有效控制方法分析

随着我国电网逐渐向智能电网迈进,信息技术在电能传输、转换、分配、调度等方面的应用,使电力企业可以进行结构调整,提高电力系统管理水平。据统计,2011年,我国电力信息化投资达220亿元,2012-2015年,电力工程建设稳步推进。为了促进电力企业全面开展项目成本核算和有效控制,提高电力工程项目的效益,确定了典型方案设计模块,通过定额规则库与典型方案设计相匹配的方法,解决了安装过程中定额第一版遗留的一些问题,并通过设计选型等措施加强了成本控制。     

基于不同城市化发展阶段的山西省城镇建设用地适度集约利用研究

研究目的:针对城市化进程中的土地低效利用以及过度集约问题,探讨不同城市化发展阶段的土地集约利用状况及适度集约利用状态。研究方法:采用匹配度模型、曲线估计模型和多目标规划模型,对山西省的土地集约利用进行分区优化。研究结果:(1)1999—2012年山西省土地集约利用与城市化水平之间的匹配趋势逐渐由失调、磨合向协调转变,但不同地区之间的匹配水平差距却在逐渐扩大;(2)2018年山西省城市化水平处于低于30%、30%～70%和高于70%时,以单位城镇建设用地固定资产投资额为表征的土地适度集约利用值分别为249.93万元/km~2、367.57万元/km~2和692.72万元/km~2,两项指标叠加全省可划分为平稳发展区、重点挖潜区和优化拓展区,并提出了不同地区差别化的建设用地管控政策。研究结论:不同城市化发展阶段的土地适度集约利用研究能为制定区域差别化政策提供参考,以促进该地区的土地集约利用水平达到适度状态。     

Digital Platforms and the Nature of the Firm

Abstract:

Digital platforms turn traditional approaches of the firm, which relied on the wage relation to explain the major difference between firm and market, upside down and underline the advantages of coordination through organization over coordination through market. This study aims to propose a definition of the firm able to integrate, besides the integrated firm, also hybrid forms such as networks of subcontractor/subcontracting firms as well as atypical forms such as digital platforms. By reactivating the firm-boundary problem, this article suggests putting valorization by labor at the heart of the firm’s decisions concerning integration. It suggests therefore a general definition of the firm as a techno-institutional center of capital valorization, provided that firms make profits by means of the appropriation of labor incorporated into their (productive, structural, intellectual) capital through institutional arrangements. By stressing the relation of production between the owners of the means of production and the direct producers, the approach of the firm supported here should allow to cover the different existing models of the firm, from the classical firm to hybrid models, around which the boundary debate has revolved, to digital platforms.     

The role of voluntary internal control reporting in earnings quality: Evidence from China

Using discretionary accruals to proxy for earnings quality, this study investigates whether and how the first voluntary internal control reporting in 2007 is associated with earnings quality in China. We find that earnings quality is higher in 2007, yet not in 2006, for public companies issuing a first-time voluntary unqualified internal control report, compared with listed firms not issuing an internal control report. Our findings are consistent with a signalling of performance explanation and inconsistent with a signalling of effectiveness explanation. We also find that earnings quality is lower for public companies issuing an internal control report mentioning a weakness, compared with public companies not issuing an internal control report. Overall, our study suggests that public companies conduct diligent self-assessments when issuing a first-time voluntary unqualified internal control report. Consequently, there is an improvement in earnings quality.     

It makes me feel vulnerable! The impact of public self-disclosure on online complaint behavior

Genuine reviews are essential for financial performance and for customer trust. In the case of a negative experience, withholding negative reviews may lead to biased online information. This paper aims to investigate two factors that may prompt customers to withhold their complaints (i.e., identity disclosure and locus of control). The study adopts a sequential exploratory mixed-method approach. An exploratory interview phase compares public vs anonymous online environments, and explores the reasons why dissatisfied customers might decide not to complain. An experiment then shows that vulnerability is a key mechanism preventing negative reviews. This effect is exaggerated when customers perceive that they do not have control over the events happening in their lives (i.e., external locus of control). Our work uncovers an important determinant of online complaint behavior, vulnerability. It also offers practical suggestions, such as improving confidentiality, to increase a customer's willingness to complain following a negative experience.     

What drives managers to insource production? Evidence from a behavioural experiment

Insourcing to countermand previous outsourcing decisions is becoming a widespread practice among firms. While the underlying performance drivers for firms (e.g., lead times, responsiveness, or security of supply) are well understood, the behavioural aspects underlying managerial decision-making processes regarding insourcing remain overlooked in empirical research. We study the effects of managers' attitudes toward insourcing, their perceived behavioural control (PBC) over the respective insourcing decision, and the effect of mimetic pressure on insourcing decision intentions and behaviour, while grounding our model in the Theory of Planned Behaviour (TPB). We test hypotheses with data gathered in a vignette-based experiment among 145 managers and apply stepwise regression analysis to find support for the positive effects of attitude and mimetic pressure on intentions to insource. Our results found no support for the effect of managers’ PBC. We find moderation effects among the internal drivers (attitude and PBC) and between internal and external drivers (attitude and mimetic pressure) on insourcing behaviour. With these findings, we provide evidence of a unique boundary condition to the TPB in the insourcing context by explaining supply chain design choices with neo-classical and behavioural theory. We emphasize important behavioural aspects in insourcing decision-making and caution supply managers in this regard.     

山岭隧道洞口浅层滑坡处治关键技术研究

受地形地质条件、工程经济以及勘察深度等因素的制约,山岭重丘区隧道不可避免地会受到各种不良地质灾害的影响.为解决隧道穿越洞口浅埋段滑坡体的施工安全问题,以乐业至百色高速公路永乐隧道工程为研究背景,针对其地形地质条件及滑坡体情况,结合洞内变形与滑坡体变形相互作用机理,对隧道穿越洞口浅埋段滑坡体施工关键技术进行研究,并针对性地提出"洞外加固处治+洞内严格控制沉降"的综合处治方案.实践结果表明,本隧道工程穿越洞口浅层滑坡体的施工过程安全顺利,采取的施工控制措施方案实施效果良好.     

Vertical separation of transmission control and market efficiency in the wholesale electricity market

This study examines how vertical separation of transmission control affects the wholesale market efficiency in the electric power industry. We analyze a unique regional electricity wholesale market in the U.S. where initially restructuring only occurred in the transmission sector. Following a commonly-used best dispatch model (Wolfram, 1999; Borenstein et al., 2002), we simulate competitive benchmark prices and compare with the best estimates available for actual prices to measure price-cost markups of the wholesale market. Empirical results demonstrate that the vertical separation of transmission control led to a significant increase in market markups in peak-load hours, documenting evidence of enhanced market power. Although we also find a reduction in the price-cost margin in low-demand hours, we reserve caution for this finding.