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The Effect of Operational Process Changes on Preoperative Patient Flow: Evidence from Field Research 手术流程改变对术前病人流的影响:来自实地研究的证据
Pub Date : 2020-10-26 DOI: 10.1111/poms.13301
Justin Kistler, R. Janakiraman, Subodha Kumar, V. Tiwari
We partnered with a leading U.S. academic medical center to empirically examine the impact of operational process changes designed to improve preoperative flow of patients through the perioperative environment. We focus on the implementation of centralized decision making and the introduction of an information technology (IT) enabled intraoperative prompt, on efficiency, as measured by preoperative patient processing time. We analyze over 33,000 individual surgical cases in a unique field experimental setting to conduct an empirical investigation of the effects of each intervention on patients' time spent in preoperative processing. To identify the causal effect of each process change, we leverage our field experimental research design and cast our analyses in the difference-in-differences modeling framework. We compare the preoperative patient processing time of two distinct patient groups, a treatment group that is impacted by the implemented operational changes and a control group that was not impacted by the changes, before and after each process change. Our results suggest a 3.4% reduction in preoperative processing time with only centralized decision making in place, yet a 10.8% reduction in preoperative processing time when centralized decision making is paired with the IT enabled intraoperative prompt. We also find evidence of a complementarity effect between our process changes and surgeon prior process experience. Our study contributes to the healthcare operations literature by demonstrating the benefits of coordinated information flow within the patient supply chain. We offer insights for hospital managers and healthcare operations scholars alike on the role of information coordination in improving preoperative patient flow with minimal impact on existing resources and staff.
我们与美国一家领先的学术医疗中心合作,对旨在改善围手术期患者术前流程的操作流程变化的影响进行了实证研究。我们专注于集中决策的实施和信息技术(IT)的引入,使术中及时有效,以术前患者处理时间为衡量标准。我们在一个独特的现场实验环境中分析了超过33,000例个体手术病例,对每种干预措施对患者术前处理时间的影响进行了实证调查。为了确定每个过程变化的因果关系,我们利用我们的现场实验研究设计,并在差异中差异建模框架中进行分析。我们比较了两组不同患者的术前处理时间,治疗组受到实施操作变化的影响,对照组不受变化的影响,在每个过程变化之前和之后。我们的研究结果表明,只有集中决策的情况下,术前处理时间减少3.4%,而当集中决策与启用IT的术中提示相结合时,术前处理时间减少10.8%。我们也发现在我们的过程变化和外科医生先前的过程经验之间的互补效应的证据。我们的研究通过展示患者供应链内协调信息流的好处,为医疗保健操作文献做出了贡献。我们为医院管理者和医疗保健运营学者提供了关于信息协调在改善术前患者流量方面的作用的见解,同时对现有资源和人员的影响最小。
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引用次数: 4
A Model of Market Discipline 市场纪律模型
Pub Date : 2020-10-22 DOI: 10.2139/ssrn.3601084
Colin Ward, Chao Ying
We develop an equilibrium model where cash holdings, costly refinancing policies, and managerial incentives are jointly determined to quantify the market's influence on management's ex ante behavior. We also derive a general formula that shows how agency and financing distortions shape payouts and compensation, two easily measured quantities. Our calibrated model estimates agency conflicts are nearly 10 times more severe than financial frictions for US public firms. Our analysis suggests that cutting corporate income taxes while introducing a tax on refinancing can reduce the relative severity of agency.
我们建立了一个均衡模型,其中现金持有量、昂贵的再融资政策和管理层激励共同决定,以量化市场对管理层事前行为的影响。我们还推导出一个通用公式,显示机构和融资扭曲如何影响支出和薪酬这两个容易衡量的数量。我们的校准模型估计,对于美国上市公司而言,机构冲突的严重程度几乎是财务摩擦的10倍。我们的分析表明,削减企业所得税同时引入再融资税可以降低代理的相对严重程度。
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引用次数: 1
Clustering Default Syndromes Across Italian SMEs 意大利中小企业的集群性违约综合症
Pub Date : 2020-10-20 DOI: 10.2139/ssrn.3731789
M. Modina, S. Zedda
The quantitative analyses related to firms’ default prediction extensively analyzed which balance sheet ratios include significant information on the probability of default of a firm. These analyses are typically aimed at measuring a generic default risk, while no analyses are aimed at describing the syndromes affecting firms and bringing them to default. Defining syndromes, which means describing how and why firms default, can be of fundamental importance for evaluating which specific weakness a firm is affected from, and which specific intervention can fix the problem. In this paper, we analyzed a panel of Italian small and medium sized companies (SMEs) for verifying if some syndromes can be found. Results shows that the main syndromes affecting the Italian SMEs are quite similar over sectors, even if each sector is characterized by specific equilibriums and values.
与企业违约预测相关的定量分析广泛地分析了哪些资产负债表比率包含企业违约概率的重要信息。这些分析通常旨在衡量一般的违约风险,而没有分析旨在描述影响公司并使其违约的综合症。定义综合症,即描述公司如何以及为什么违约,对于评估公司受到哪一特定弱点的影响,以及哪种具体干预措施可以解决问题,可能具有根本重要性。在本文中,我们分析了一组意大利中小企业(SMEs),以验证是否可以发现一些综合症。结果表明,影响意大利中小企业的主要综合症在各个部门之间非常相似,即使每个部门都具有特定的均衡和价值。
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引用次数: 0
Association of Number of Bidders and Minimum Bid Ratio (AEr) with Effect of E-bidding of Different Project 投标人数量和最低投标比(AEr)与不同项目电子投标效果的关系
Pub Date : 2020-10-15 DOI: 10.2139/ssrn.3724112
Anjay Kumar Mishra, Megh Bahadur K. C., P. Aithal
The purpose of this research is to analyze the relation between the number of bidders versus the minimum bid ratio (AEr)/percentage below the initial engineer’s estimate to type and size of project within Road Divisions Butwal and Shivapur. Bidding data of four consecutive fiscal years starting from 072/73 of two Road Divisions which are already completed its procurement stage were analyzed. The percentage below/contract awarded cost is directly proportional or a significant correlation was found with the number of the participated bidder in any project s of both divisions during the data study period. Bidders have to bid below 20% of the initial estimate that was found to get a project in hand by contractors and they are willing to bid low for the utilization of resources, types of equipment, manpower, and also to get experiences. This research revealed correlation coefficients between the number of bidders and percentage below engineers' estimates are 0.61 for the Butwal division and 0.67 for the Shivapur division. Correlation coefficients 0.82 and 0.83 was found in Nepalgunj and Mahendranagar. Percentage below engineers' estimate depends on 67 and 69% on the number of bidders in Nepalgunj and Mahendranagar respectively. E-bidding helped to promote competition along with low bidding. As there is 17% below with only hardcopy bidding but with e-bid the below percentages rises to 28% with more number of bidder per project. Improvement in existing offer granting framework with additional capability rules ought to be engaged by doling out the weight in the monitory term, soliciting a technique from the proclamation, upgraded e-offering framework, and affirmation for venture exhibitions of the undertaking before execution. This research would be useful for those who are involving in policy making and governing agencies like Public Procurement Monitoring Office and for making necessary amendments in existing rules.
本研究的目的是分析投标人数量与最低投标比例(AEr)/低于初始工程师对道路分部Butwal和Shivapur项目类型和规模的估计百分比之间的关系。分析了已完成采购阶段的两个公路事业部从072/73开始连续四个会计年度的招标数据。在数据研究期间,低于/合同授予成本的百分比与两个部门的任何项目的参与投标人数量成正比或显着相关。投标人必须出价低于承包商发现的项目初始估价的20%,并且他们愿意为资源,设备类型,人力的利用以及获得经验而出价低。该研究显示,Butwal分部的投标数量与低于工程师估计的百分比之间的相关系数为0.61,Shivapur分部的相关系数为0.67。尼泊尔君和马亨德拉讷格的相关系数分别为0.82和0.83。低于工程师估计的百分比分别取决于尼泊尔和Mahendranagar的投标人数量的67%和69%。电子招标有助于促进竞争和低出价。由于只有硬拷贝投标的17%以下,但通过电子投标,以下百分比上升到28%,每个项目的投标人数量更多。对现有的要约授予框架进行改进,增加能力规则,可以通过在监测期限内分配权重,从公告中征求技术,升级电子要约框架,并在执行前确认企业的风险展示。这项研究对那些参与政策制定和公共采购监测办公室等管理机构的人以及对现有规则进行必要修订的人很有用。
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引用次数: 2
Targeted Incentives, Broad Impacts: Evidence from an E-commerce Platform 目标激励,广泛影响:来自电子商务平台的证据
Pub Date : 2020-10-11 DOI: 10.2139/ssrn.3709380
Xiang Hui, Meng Liu, T. Chan
Digital platforms sometimes offer incentives to a subset of sellers to nudge behaviors, but how do these targeted incentives affect all sellers? In this paper, we study a policy change on a large e-commerce platform that offers financial incentives only to platform-certified sellers when they provide fast handling and generous return policies on their listings. We find that both the targeted and non-targeted sellers become more likely to adopt the promoted behavior after the policy change. Exploiting a large number of markets on the platform, we find that in markets with a larger proportion of the targeted population---hence more affected by the policy change---non-targeted sellers are more likely to adopt the promoted behavior and experience a larger increase in sales with little price changes. This finding is consistent with our key insight that a targeted incentive may increase demand for non-targeted sellers if both the targeted type and the promoted behavior are observed and valued by consumers. Our results have managerial implications for digital platforms that use targeted incentives.
数字平台有时会向一小部分卖家提供激励措施,以推动他们的行为,但这些有针对性的激励措施如何影响所有卖家?在本文中,我们研究了一个大型电子商务平台上的政策变化,该平台仅向平台认证的卖家提供快速处理和慷慨的退货政策时提供财务激励。我们发现,政策改变后,目标卖家和非目标卖家都更有可能采取推广行为。通过对平台上大量市场的研究,我们发现,在目标人群比例较大的市场,受政策变化影响较大,非目标卖家更有可能采取促销行为,在价格变化较小的情况下,销售额也会有较大的增长。这一发现与我们的关键见解是一致的,即如果目标类型和促进行为都被消费者观察和重视,目标激励可能会增加对非目标卖家的需求。我们的研究结果对使用目标激励的数字平台具有管理意义。
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引用次数: 0
On the Effects of Continuous Trading 论连续交易的影响
Pub Date : 2020-10-07 DOI: 10.2139/ssrn.3707154
Ivan Indriawan, R. Pascual, Andriy Shkilko
The continuous limit order book, in which messages are processed one by one in the order of receipt, is a prominent design feature of modern securities markets. Theoretical models show that this design imposes a cost on liquidity providers and suggest that this cost may be reduced by switching to batch auctions. We examine a recent opposite move, whereby a stock exchange switches from batch auctions to continuous trading. The move leads to a significant increase in adverse selection, which is partly offset by a reduction in inventory costs. The net liquidity effect of the switch is negative.
连续限价订单是现代证券市场一个突出的设计特点,其中信息按收到的顺序逐条处理。理论模型表明,这种设计对流动性提供者施加了成本,并表明这种成本可以通过转向批量拍卖来降低。我们研究了最近的一个相反的举动,即证券交易所从批量拍卖转向连续交易。这一举动导致逆向选择显著增加,而库存成本的减少部分抵消了逆向选择的增加。该转换的净流动性效应为负。
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引用次数: 10
Non Parametric Analysis of Efficiency: An Application to the Pharmaceutical Industry 效率的非参数分析:在制药工业中的应用
Pub Date : 2020-09-07 DOI: 10.3390/math8091522
Ricardo F Diaz, B. Sanchez-Robles
Increases in the cost of research, specialization and reductions in public expenditure in health are changing the economic environment for the pharmaceutical industry. Gains in productivity and efficiency are increasingly important in order for firms to succeed in this environment. We analyze empirically the performance of efficiency in the pharmaceutical industry over the period 2010–2018. We work with microdata from a large sample of European firms of different characteristics regarding size, main activity, country of origin and other idiosyncratic features. We compute efficiency scores for the firms in the sample on a yearly basis by means of non-parametric data envelopment analysis (DEA) techniques. Basic results show a moderate average level of efficiency for the firms which encompass the sample. Efficiency is higher for companies which engage in manufacturing and distribution than for firms focusing on research and development (R&D) activities. Large firms display higher levels of efficiency than medium-size and small firms. Our estimates point to a decreasing pattern of average efficiency over the years 2010–2018. Furthermore, we explore the potential correlation of efficiency with particular aspects of the firms’ performance. Profit margins and financial solvency are positively correlated with efficiency, whereas employee costs display a negative correlation. Institutional aspects of the countries of origin also influence efficiency levels.
研究费用的增加、专业化和卫生方面公共支出的减少正在改变制药业的经济环境。为了使企业在这种环境中取得成功,提高生产率和效率变得越来越重要。本文对2010-2018年医药行业的效率绩效进行了实证分析。我们使用来自大量欧洲公司样本的微观数据,这些公司在规模、主要活动、原产国和其他特殊特征方面具有不同的特征。我们通过非参数数据包络分析(DEA)技术每年计算样本中公司的效率得分。基本结果表明,对于包含样本的公司来说,平均效率水平适中。从事制造和分销的公司比专注于研究和开发(R&D)活动的公司效率更高。大企业的效率水平高于中小企业。我们的估计表明,2010年至2018年,平均效率呈下降趋势。此外,我们探讨了效率与企业绩效的特定方面的潜在相关性。利润率、财务偿付能力与效率正相关,而员工成本与效率负相关。原产国的体制方面也影响效率水平。
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引用次数: 6
Does the Fundamental Transformation Deter Trade? An Experiment 根本性的转变会阻碍贸易吗?一个实验
Pub Date : 2020-09-01 DOI: 10.2139/ssrn.3685692
C. Engel, Eric A. Helland
Oliver Williamson has coined the term “fundamental transformation”. It captures the following situation: before they strike a deal, buyer and seller are protected by competition. Yet thereafter they find themselves in a bilateral monopoly. With common knowledge of standard preferences, both sides conclude the contract regardless if its expected value exceeds their outside options. We run an experiment to test whether additional behavioral reasons deter mutually beneficial trade. If the risk materializes, another individual makes a windfall profit. She does so by intentionally exploiting the first individual. The first individual is let down, although she has knowingly exposed herself to this risk. Participants sell the opportunity to enter the contractual relationship at a price below its expected value. This effect is driven by risk aversion, and already present if the risk is stochastic. Behavioral effects are heterogeneous. About a quarter of participants exhibit the hypothesized additional deterrent effect.
奥利弗·威廉姆森(Oliver Williamson)创造了“根本性变革”一词。它抓住了以下情况:在达成交易之前,买方和卖方受到竞争的保护。然而,此后他们发现自己处于双边垄断状态。在对标准偏好有共同认识的情况下,无论合同的预期价值是否超过他们的外部选择,双方都要签订合同。我们做了一个实验来检验额外的行为原因是否会阻碍互利的贸易。如果风险成为现实,另一个人就会暴利。她是通过故意利用第一个人来做到这一点的。第一个人失望了,尽管她明知自己有这样的风险。参与者以低于预期价值的价格出售进入合同关系的机会。这种效应是由风险厌恶所驱动的,如果风险是随机的,这种效应就已经存在了。行为效应是多种多样的。大约四分之一的参与者表现出假设的额外威慑效应。
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引用次数: 0
Financial Reporting in Family Firms: A Socio-Emotional Wealth Approach Toward Information Quality 家族企业财务报告:社会情感财富对信息质量的影响
Pub Date : 2020-08-10 DOI: 10.2139/ssrn.3670611
A. Calabrò, M. Cameran, Domenico Campa, Angela Pettinicchio
The strategic choices of family firms are influenced by economic and non-economic reference points. We contend that the preservation of the affect-related values a family derives from its ownership position in a firm (i.e., socio-emotional wealth – SEW) affects financial reporting quality and earnings management strategies. Using the voluntary International Financial Reporting Standards (IFRS) adoption by Italian unlisted family firms as a natural laboratory setting, we found that the level of SEW endowment impacts on financial reporting quality. Furthermore, we observe that IFRS adoption is associated with less accrual but higher real activity manipulation for increasing levels of SEW endowment.
家族企业的战略选择受到经济和非经济参考点的影响。我们认为,家族从其在公司的所有权地位(即社会情感财富- SEW)中获得的情感相关价值的保存会影响财务报告质量和盈余管理策略。利用意大利非上市家族企业自愿采用国际财务报告准则(IFRS)作为自然实验室环境,我们发现SEW捐赠水平对财务报告质量的影响。此外,我们观察到,采用国际财务报告准则与增加SEW捐赠水平的应计收益较少但实际活动操纵较高相关。
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引用次数: 0
No Firm Is an Island? How Industry Conditions Shape Firms’ Expectations 没有公司是孤岛?行业环境如何影响企业预期
Pub Date : 2020-08-01 DOI: 10.2139/ssrn.3690946
P. Andrade, Olivier Coibion, E. Gautier, Y. Gorodnichenko
We study how firms’ expectations and actions are affected by both aggregate and industry-specific conditions using a survey of French manufacturing firms. We document an important new stylized fact. In response to industry-level shocks that have no aggregate effects, firms’ aggregate expectations respond persistently. This is consistent with “island” models in which firms use the local prices they observe to make inferences about broader aggregate conditions. We then assess the extent to which these patterns are related to observable characteristics of firms and the industries in which they reside. Finally, we extend the analysis to firms’ expectations over their own future price changes and document how these respond to both industry and aggregate variation.
通过对法国制造业企业的调查,我们研究了企业的预期和行动是如何受到总体条件和行业特定条件的影响的。我们记录了一个重要的新的风格化事实。在应对没有总体效应的行业层面冲击时,企业的总体预期会持续做出反应。这与“孤岛”模型是一致的,在“孤岛”模型中,企业使用他们观察到的当地价格来推断更广泛的总体状况。然后,我们评估这些模式在多大程度上与企业及其所在行业的可观察特征相关。最后,我们将分析扩展到企业对其自身未来价格变化的预期,并记录这些预期如何响应行业和总体变化。
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引用次数: 25
期刊
IO: Empirical Studies of Firms & Markets eJournal
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