Probabilistic wind forecasting up to three months ahead using ensemble predictions for geopotential height

We develop a method for forecasting the distribution of the daily surface wind speed at timescales from 15-days to 3-months in France. On such long-term timescales, ensemble predictions of the surface wind speed have poor performance, however, the wind speed distribution may be related to the large-scale circulation of the atmosphere, for which the ensemble forecasts have better skill. The information from the large-scale circulation, represented by the 500 hPa geopotential height, is summarized into a single index by first running a PCA and then a polynomial regression. We estimate, over 20 years of daily data, the conditional probability density of the wind speed at a specific location given the index. We then use the ECMWF seasonal forecast ensemble to predict the index for horizons from 15-days to 3-months. These predictions are plugged into the conditional density to obtain a distributional forecast of surface wind. These probabilistic forecasts remain sharper than the climatology up to 1-month forecast horizon. Using a statistical postprocessing method to recalibrate the ensemble leads to further improvement of our probabilistic forecast, which then remains calibrated and sharper than the climatology up to 3-months horizon, particularly in the north of France in winter and fall.     

The effects of slack resource of R&D professionals on firm performance: evidence from traditional manufacturing firms in an emerging economy

Abstract

As an important component of organizational human resource slack (HR slack), the slack of research-and-development (R&D) professionals has been studied by several authors. However, it remains unclear whether and how this small component of general HR slack, i.e. the slack of research-and-development professionals (RHR slack), may affect overall firm performance in an emerging economy without much R&D tradition or pro-R&D institutions. Based on two organizational theories, i.e. institutional theory and the resource-based view of the firm (RBV), we propose competing hypotheses on the relationship between RHR slack and firms’ accounting performance. We also examine whether the relationship between RHR slack and firm performance should be linear or curvilinear. Finally, we also test the relationship between RHR slack and other dimensions of firm performance. Several interesting findings have been obtained. For instance, neither the perspective based on institutional theory nor that based on RBV can fully predict all types of RHR slack-performance relationships, be these relationships linear or curvilinear.     

Can environmentally oriented CEOs and environmentally friendly suppliers boost the growth of small firms?

The core question addressed in the natural resource‐based view (NRBV) of the firm is how to develop and exploit resources beneficial for both the natural environment and firm performance. Due to the resource constraints and increased competition facing small manufacturing firms, achieving this is a challenge for such companies. Building on the NRBV and resource orchestration literatures, we examine the relationship between green purchasing capabilities (GPCs), CEO's environmental orientation (EO), and firm growth. Results from 304 Swedish small manufacturing firms indicate a significant relationship between GPC and growth, and this relationship is positively moderated by the EO of the CEO.     

医疗卫生资源、新型冠状病毒肺炎死亡率与资源优化配置

新冠肺炎疫情发生后，湖北省一直是疫情的重灾区与抗疫的焦点地区，患者死亡率远远高于全国平均水平。本文构建纳入医疗资源条件的新冠肺炎传播的SIER模型进行机制分析和模拟研究，发现改善卫生资源条件会降低疫情的死亡率。针对湖北省疫情数据，使用最小二乘方法进行实证研究后发现,无论是增加医院或者卫生系统内的床位数，还是增加医护人员数，均可显著地降低疫情死亡率。进一步通过时变效应和断点回归模型考察重大突发公共卫生事件一级响应政策效应和外援医疗团队效应，实证结果也佐证了上述推断。结合研究结论和湖北省防疫经验，本文提出先整合医院内部医疗资源，打破医院内部各科室之间分割，再整合地区内医疗卫生系统的资源，同时实施医疗系统外部资源三管齐下的医疗资源配置建议措施，以期为国内外疫情防控贡献中国智慧。     

技术购买与资源协奏式创新 ——基于技术吸收与整合互补性的联合中介视角

基于资源协奏理论，本文将外部技术购买、技术吸收和技术整合纳入同一框架，运用2005—2014年中关村国家高技术企业的面板回归和Tobit回归分析，研究技术购买影响创新的资源协奏机制。研究发现：技术吸收与技术整合在技术购买的创新实现中具有互补性，且二者基于互补性发挥联合中介作用，实现技术购买企业的资源协奏式创新。本文基于资源协奏框架探讨外部技术投入战略的创新效果实现机制，为技术购买实现创新机制的研究引入新视角，深化开放式创新理论和资源协奏理论。     

金融科技能影响金融分权吗? ——来自金融科技信贷的证据

金融科技正在变革全球金融体系、鼎新世界金融格局。那么，金融科技在改变中国金融业格局的同时，是否会影响中国中央和地方之间的金融分权呢？本文在理论分析的基础上，使用2010—2018年中国31个省级区域的面板数据进行实证检验，结果表明金融科技降低了地方政府的金融分权水平。进一步讨论发现：金融科技对金融分权的抑制效应受到财政分权和城镇化率影响，财政分权越大的地区，金融科技对金融分权的抑制效应越明显；城镇化率越高的地区，金融科技对金融分权的抑制效应越小；在中国区域经济发展不平衡的现实背景下，金融科技对金融分权的抑制作用在金融发展欠发达地区比在较发达地区更强。     

一种资源视角的关系特性分析与建模方法

为满足联合作战条件下信息系统对资源数据灵活组合应用的需求，从作战资源视角出发，聚焦资源的关系特征维度，开展了资源与资源、资源与功能的关系特性分析，确定了各类关系的概念内涵、基本属性及关系特征要素集的组成，同时研究了资源视角关系特征的表征方法，并针对资源能力溯源及资源能力认知等展开了关系特征模型应用分析。通过资源视角关系特性分析与建模，可提高信息系统对资源的快速组织和应用能力，为从事军事资源联合运筹与信息系统研制提供参考。     

Does Targeted Monetary Policy Matter? A Perspective from China

Several major central banks have experimented with targeted monetary policy to improve credit resource allocation. This policy only applies to ‘eligible’ banks. For example, The People's Bank of China conducted seven targeted reductions of reserve requirements during 2014–15. This article documents the phenomenon of targeted monetary policy and evaluates its effects. The results show that, in the case of China, this policy has generated an extra significant, positive return on the stocks of eligible banks, amounting to 1.2–1.3 per cent in a four‐day treatment period. This substantial return gives commercial banks an extra incentive to align with the policy goals of central banks.     

How a Firm's Domestic Footprint and Domestic Environmental Uncertainties Jointly Shape Added Cultural Distances: The Roles of Resource Dependence and Headquarters Attention

Even though many firms conduct most of their business domestically, international management research has remained remarkably silent on the role of a firm's domestic footprint in its internationalization strategy. We shed light on that role by exploring how the size of a firm's domestic footprint influences the cultural distance that the firm adds to its country portfolio when expanding internationally. Integrating resource dependence theory and the attention‐based view, we hypothesize that a firm's domestic footprint has a negative relationship with added cultural distance (ACD), and that domestic policy uncertainty strengthens this relationship whereas domestic demand uncertainty weakens it. We find robust support for our hypotheses in a sample of the world's largest retailers covering the period 2000–07, indicating that a firm's domestic footprint and domestic environmental uncertainties jointly shape cross‐cultural expansion strategies. Our findings suggest that ACDs reflect headquarters executives' desire to avoid ineffective foreign expansions, hinting at possible biases in studies of the performance effects of distance.