人工智能时代下图书馆行业的机遇与挑战

本文分析了图书馆随科技发展的变化历程,重要讨论了在人工智能时代下图书馆面临的挑战和蕴含的机遇;展望了未来智慧图书馆发展趋势,认为人工智能时代背景下各图书馆间资源差距的缩小,图书资源采访决策能力提升、智能检索与推荐以及用户学习方式的改变是智慧图书馆带来的主要机遇;指出了资源与空间整合调整面临的资金压力、人工智能技术的选择与应用、馆员意识转变和技能提升、行业标准的缺失以及面临的法律、社会和技术风险等是智慧图书馆发展的主要挑战.     

Going multilateral? Financial markets' access and the League of Nations loans, 1923–8

Why are international financial institutions important? This article reassesses the role of the loans issued with the support of the League of Nations. These long‐term loans constituted the financial basis of the League's strategy to restore the productive basis of countries in central and eastern Europe in the aftermath of the First World War. In this article, it is argued that the League's loans accomplished the task for which they were conceived because they allowed countries in financial distress to access capital markets. The League adopted an innovative system of funds management and monitoring that ensured the compliance of borrowing countries with its programmes. Empirical evidence is provided to show that financial markets had a positive view of the League's role as an external, multilateral agent, solving the credibility problem of borrowing countries and allowing them to engage in economic and institutional reforms. This success was achieved despite the League's own lack of lending resources. It is also demonstrated that this multilateral solution performed better than the bilateral arrangements adopted by other governments in eastern Europe because of its lower borrowing and transaction costs.     

Direct and Spillover Effects of Unconventional Monetary and Exchange Rate Policies

This paper explores the direct effects and spillovers of unconventional monetary and exchange rate policies. We find that official purchases of foreign assets have a large positive effect on a country’s current account that diminishes considerably as capital mobility rises. There is an important additional effect through the lagged stock of official assets. Official purchases of domestic assets, or quantitative easing (QE), appear to have no significant effect on a country’s current account when capital mobility is high, but there is a modest positive impact when capital mobility is low. The effects of purchases of foreign assets spill over to other countries in proportion to their degree of international financial integration. We also find that increases in US bond yields are associated with increases in foreign bond yields and in stock prices, as well as with depreciations of foreign currencies, but that all of these effects are smaller on days of US unconventional monetary policy announcements. We develop a theoretical model that is broadly consistent with our empirical results and that highlights the potential usefulness of domestic unconventional policies as responses to the effects of foreign policies of a similar type.     

Efficiency Determinants and Capacity Issues in Angolan Insurance Companies

This paper describes a variety of approaches used to assess the efficiency of a sample of major insurance companies in Angola between 2003 and 2012. Starting out with the bootstrapping technique, several data envelopment analysis (DEA) estimates were generated, allowing the use of confidence intervals and bias correction in central estimates to test for significant differences in efficiency levels and input‐decreasing/output‐increasing potentials. Previous studies have focused on the measurement and explanation of the factors affecting the performance rather than the prediction. The use of neural networks combined with DEA results as part of an attempt to produce a model for insurance companies’ performance with effective predictive ability is investigated. The findings indicate that older insurance companies with Portuguese origin tend to be more efficient. Results also suggest that opportunities for accommodating future demand appear to be scarce.     

增值税转型对我国微观经济的影响

增值税的全面转型是振兴经济的一大利好消息，力度大、范围广，对企业来说，不仅能够直接减轻税收负担，改善生存环境，更能够增加流动资金，扩大企业固定资产投资需求，因而有利于促进企业的设备更新改造和高新技术企业的发展，促进利润的提升和产业升级。在这种经济背景下，文章论述了增值税转型后给企业带来的一系列影响以及应采取的相应对策。     

Building internal business scenarios based on real data from a performance measurement system

This paper presents a new methodology to build internal business scenarios from the data gathered by some key performance indicators (KPIs) defined within a performance measurement system. The application of the principal components analysis technique leads to the identification of latent relationships between KPIs that underlies some important business aspects. Further, this methodology allows to represent not only the temporal evolution of the organisation as a function of these business aspects but also the definition and determination of internal business scenarios, being therefore the source of meaningful managerial information. At the end of the paper, results of a practical application are presented and discussed, as well as their importance for the organisation from a decision making point of view.     

A note on how to measure hubbing practices in airline networks

Benefits and costs associated to hubbing practices of airlines are still subject to much debate. In the previous literature, some standard spatial concentration indices have been proposed to measure it. However, we show that these indices are “ill-defined” because they do not take into account the salient characteristic of hubbing: connecting passengers. The purpose of this research is to present a new methodology which avoids the pitfalls of other methods. Our new methodology also analyzes the level of concentration of the connecting passengers studying two different dimensions: hub airports and routes. Finally, we apply our methodology to some US carriers.     

Economic Recovery in the Age of COVID-19

Economic recovery post-COVID-19 will be structured around answering a number of fundamental questions. It is necessary to take stock of the extent of the recovery and of the transformation our economies have experienced in the last year and a half.

     

旅游服务的体验营销研究

以向顾客提供有价值的体验为宗旨，体验营销力图通过满足顾客的体验需要而达到吸引和保留顾客、获取利润的目的。旅游脆务本质上是为旅游者提供的一种或多种经历和体验。时旅游企业而言，服务提供者、游客、服分设施及场景、服务过程都是实施体验营销的关键要素。可采取的旅游服务的体验营销内容包括设计有吸引力的旅游体验主题，提升旅游服务的体验价值，展示体验式旅游有形物，营造旅游互动体验氛围、重视对游客的感官刺激等。