高星级酒店业的信息技术“生产率悖论”研究——基于广州案例

信息技术与酒店业的结合给酒店业带来了新的发展机会.国外有大量的学者致力于信息技术投资与企业生产率及业绩之间关系的研究,但并没有一致的结论.文章通过对广州市高星级酒店的相关调查,获取了第一手数据,借助AMOS软件的验证性因子分析及SPSS软件的相关性分析和多元回归分析功能,以检验信息技术的应用对酒店业绩的影响.结果显示,信息技术“生产率悖论”在高星级酒店业内不存在,前厅应用、客人相关界面应用、餐厅及宴会管理系统及后台应用均对酒店业绩有积极的作用.其中,客人相关界面应用对酒店业绩影响最大,因此应着重投资.文章的结论将为高星级酒店业决定是否战略性地投资于信息技术或集中于某些特定领域提供重要的信息.最后,文章还对研究的局限性以及后续可以开展的研究进行了一定的展望.     

Research on the relationship between stand productivity and site condition of Larix kaempferi

In this research, five plots are Selected based on stand storage and productivity of planted forest of Larix kaempferi （Japanese larch） as well as their relationship with factors suCh as forest age, site condition and stand density. Through standard plot investigation and method of trunk analysis, systematic research is conducted on storage and productivity of the planted forest and their relationship with site condition. As shown in the research, productivity of planted forest of Larix kaempferi in low latitude area is higher than that in high latitude area while stand productivity is higher in slight acid soil. Contents of potassium element in the soil have Considerable influence on productivity of the Larix kaempferi forest.     

中国地区工业绿色全要素生产率增长:——基于方向性距离函数的经验分析

结合方向性距离函数和跨期数据包络分析法,测度绿色全要素生产率增长时尽可能地避免了出现技术倒退结论。中国省份工业的经验分析表明:忽略非期望产出的全要素生产率增长被高估,并混淆了技术进步和技术效率变化的相对贡献;技术无效率普遍存在且省际差异和年际波动性大,但这与经济发展水平无关;绿色全要素生产率变化也存在省际差异和年际波动特点,其中技术进步是其增长的主要源泉,而技术效率恶化是其倒退的根本原因;绿色全要素生产率增长存在明显的倒U型趋势和趋同性,而且外资利用印证了"污染天堂"假说。     

数字经济对中国全要素生产率的影响机理:提升效应还是抑制效果？

数字经济是新时代引领中国经济高质量发展的关键抓手。然而现阶段数字经济普惠性发展尚未实现，掣肘着其对国内全要素生产率的提升力度。文章在理论分析的基础上，基于熵权TOPSIS法测算了2012-2018年中国数字经济发展水平指数，探讨了中国数字经济对全要素生产率的影响机理。研究发现：数字经济的发展显著提升了中国全要素生产率水平，但区域层面上，东部地区的数字经济发展明显领先于中西部地区，引领着中国全要素生产率快速增长。从全要素生产率的分解指标来看，数字经济推动了技术效率提升，但现阶段国内关键核心技术环节薄弱以及数字产业化带来的人才和资金的虹吸效应导致数字经济对技术进步产生了阻碍作用。此外，当前数字经济对不同产业的渗透度存在明显的不均衡性，筑高了创新资源的流动壁垒，影响产业间协调创新及合理化布局，进而抑制了对全要素生产率的提升力度。进一步的机制检验表明在创新环境的支持下，人才集聚及金融规模强化了数字经济对全要素生产率的提升力度。     

The Effect of Information Communication Technology and Corporate Organizational Reforms on Productivity in Japan: Firm- level Evidence

Our main objective in this paper is to understand how Japanese firms can increase productivity by utilizing Information and Communication Technology (ICT). E-commerce, BPO (Business Process Outsourcing), and SCM (Supply Chain Management) are popular in Japan, so a new type of ICT might offer an opportunity for Japanese firms to change current business relations or to start up new ones. The novelty of this paper is in its empirical study of the combination of ICT promotion and a variety of business organizational changes needed to discover which type of business organizational change is suitable for raising productivity in Japan. For workplace organization within firms, we discuss the decentralization or centralization of decision-making power and the flattening of the corporate hierarchy. For business relational changes, we discuss the outsourcing of the business process and the start up of new business relations. Our main result is that in general, the promotion of ICT has better effects in reforms related to changes in business relations among business partners, rather than to reforms within a firm. Starting up new business relations that require planning and R&D show the best chances of raising productivity using ICT promotion.     

Resource saving and productivity enhancing impacts of crop management innovation packages in Ethiopia

Crop management innovations are often not discrete fixed stand‐alone options—and their adoption may imply various combinations and adaptations. This potentially confounds their impact assessment. This article assesses the resource saving and productivity enhancing impacts of a crop management package revolving around minimum tillage in maize‐based farming systems in northwest Ethiopia. An endogenous switching regression model was applied to plot‐ and household‐level survey data collected from 290 rural households operating 590 maize plots during the 2012 production year. Controlling for variations in plot and household characteristics, the average effect of minimum tillage package (minimum tillage package) on maize productivity is 0.44 t/ha. Compared to conventional practice (CP), adoption of the MTP decreased the average male and female labor use in maize production by 14.4 and 8.2 person‐days per ha, respectively. Similarly, MTP adoption decreased draft power use for land preparation by 13.2 pair of oxen‐days per ha. Compared to CP, in general, there is a considerable short‐run maize productivity gain and reduction in labor and draft power use under MTP.     

Spillovers in Exchange Rates and the Effects of Global Shocks on Emerging Market Currencies

This paper provides an investigation into the spillover effects of exchange rate returns and volatility for developed and emerging market currencies, using data from 1997 to 2011. The results suggest that spillovers in exchange rate returns have increased steadily over time, in moderate reaction to economic events. In contrast, spillovers in total observed volatility (measured by squared returns) react more strongly to economic events, and this transmission has remained at a relatively high level since the global financial crisis. Furthermore, over the course of time, global shocks would appear to account for a larger proportion of aggregate exchange rate volatility (and the relative importance of domestic shocks has declined). The paper also considers whether the increase in volatility spillover is due to sudden shocks, or whether it is due to changes in the stochastic trend of the underlying volatility process. The results suggests that in most cases, this increase is due to sudden shocks, however, in certain instances country‐specific events may perpetuate changes to the trend of the underlying volatility spillover.     

异质性企业、出口与“生产率悖论”——基于2007年中国制造业企业层面的证据

在异质性企业贸易理论提出以后,生产率就被看作是决定企业出口的重要因素,只有生产率高的企业才有能力选择出口.不过对中国企业的经验研究发现,中国出口企业的生产率的均值要低于非出口企业,即存在“生产率悖论”.本文使用2007年中国制造业企业样本,运用两种方法,其一是计算比较生产率法,其二是运用统计方法检验出口企业与非出口企业的生产率差异.为了结论的准确性,我们分行业、分地区、分企业注册类型、分企业规模检验.最后检验出口企业的生产率与其出口规模的相关性.结论认为:出口企业生产率均值在大部分情况下低于非出口企业;出口企业的生产率在很多时候显著低于非出口企业或者与非出口企业无差异;出口企业的生产率与出口规模正相关,但是在控制其它可能影响出口的因素后,则变为负相关.这些都是中国出口企业存在“生产率悖论”的证据.     

金融冲击、货币政策与宏观审慎政策—基于动态随机一般均衡模型的分析

通过建立包含房地产市场金融冲击的NK-DSGE模型,考察了我国货币政策与宏观审慎政策的效果。通过比较不同政策机制下金融冲击的脉冲响应函数可以发现,宏观审慎政策的引入缓和了金融冲击的效应,并且可以同时实现稳定物价和稳定金融系统的目的。社会福利分析的结果表明：(1)金融冲击下,仅对产出缺口和通胀做出反应的政策具有最低的社会福利水平;(2)如果货币政策考虑信贷市场,并同时使用反周期性宏观审慎政策,那么社会福利将得到明显的提高。这意味着金融冲击下,政府应该积极行使对信贷市场做出反应的货币政策以及反周期性宏观审慎政策相结合的政策机制。当前,在房地产市场整体不景气的背景下,我国政府积极利用金融冲击对房地产市场进行调控。因此,采用对信贷市场做出反应的货币政策以及反周期性宏观审慎政策将具有相对较好的政策效果。     

Manufacturing productivity in China and India: The role of institutional changes

In this paper we undertake a comparative study of productivity in the manufacturing sector for China and India using data from survey of manufacturing industries for the two countries. We find that productivity of manufacturing industries in China relative to that in India improved substantially over the 1998–2003 period. Specifically, the average total factor productivity (TFP) growth for the manufacturing sector over this period was about 11% higher in China than in India. We document two substantial changes in government policies in China that were not witnessed in India. First, the late 1990s saw an enormous wave of ownership restructuring due to the formal endorsement of private property rights by the Chinese central government. Second, in 1997 a large scale labour retrenchment program was launched to address the long standing problem of labour redundancy in the public sector. Using data from the Chinese survey of manufacturing industries, we quantify the impact of these large scale institutional changes on TFP of Chinese manufacturing industries. We find that these policy changes can explain about 30% of the growth in TFP of manufacturing industries. Hence we conclude that these institutional changes in China can account for a significant part of the gains in productivity of manufacturing industries in China relative to that in India over the 1998–2003 period.