How being envied shapes tourists’ relationships with luxury brands: A dual-mediation model

Positive reviews of luxury brands on social media provide tourists with an opportunity for self-presentation. Recent studies have suggested that these reviews can easily trigger envy in receivers, yet few studies have discussed the effect of envy on review writers. This research examined the effects of review writers’ perceptions of being envied on their relationships with the luxury brands they shared on social media. The results of three experiments in vacation scenarios showed that writers were more likely to feel pride (anxiety) when they were benignly (maliciously) envied, eliciting a stronger (weaker) self-brand connection. Moreover, social tie strength played a moderating role. The effect of being envied was stronger when writers and receivers had strong (vs. weak) ties. Our findings provide luxury brand managers with managerial insights into content customization and platform selection in buzz marketing strategies.     

The impact of artificial intelligence on economic growth and welfare

Focusing on the self-accumulation ability and the nonrival characteristic of artificial intelligence (AI), this paper develops a three-sector endogenous growth model and investigates the impact of the development of AI along the transitional dynamics path and the balanced growth path. The development of AI can increase economic growth along the transitional dynamics path, and can increase household short-run utility if an increase in the accumulation of AI is due to the rising productivity in the goods or AI sector, but can be detrimental to household short-run utility if an increase in the accumulation of AI is because firms use more AI to replace human labor. In addition, the development of AI is not necessarily beneficial to household welfare in the long run. The main results are unaffected when considering the case where AI can improve the accumulation of human capital, the traditional research and development model, and different kinds of physical capital.     

从关系能力到网络能力：合作能力演化阶段研究及展望

在制造业全球化、融合化和智能化发展的今天，合作能力协同作用成为影响合作成功的关键因素。2015年，国务院印发《中国制造2025》，要求实施创新驱动发展战略，坚持把创新摆在制造业发展全局的核心位置，突破一批重点领域关键共性技术，推动制造业跨区域、跨领域和跨行业协同创新，进而实现我国制造强国目标。由此，合作能力成为推动我国制造业创新发展的核心力量。通过回顾和梳理合作能力相关文献，归纳合作能力内涵与构成，创新性地提出无论是关系能力、联盟能力还是网络能力都是合作能力，也是合作能力演化不同阶段的具体表现形式。同时，通过解析各阶段能力对企业绩效的不同作用路径，更清晰地说明合作能力对企业绩效影响的内在机理。     

Telecoupling mechanism of urban land expansion based on transportation accessibility: A case study of transitional Yangtze River economic Belt,China

Several studies have explored the drivers of urban land expansion (ULE), but disregarded the influence of distant spatial effect on ULE at a large regional scale. This study contributed to a tele-coupling relationship framework between spatial spillover of ULE and transportation accessibility to find the influence of distance spatial effect on ULE. Drawing upon land-use remote sensing data from 1990–2015 and transportation network data, this study assessed the relationship between transportation accessibility and ULE, and developed a second-order spatial autoregressive model (SO-SAR) to explore the spatial spillover mechanism of ULE in the Yangtze River Economic Belt (YREB). The results find that ULE exhibits a significantly positive spatial correlation when the connection criterion of accessibility is 2 h≤hour≤3 h. The SO-SAR model results show that ULE is affected by the historical ULE, which presents a significant path-dependence effect. Moreover, the ULE in most local cities has a weak inhibition on the ULE of the surrounding cities where the connection criterion of accessibility is 1 h. However, the spillover effects of remote city’s ULE have a slight positive impact on local ULE due to the improvement of traffic accessibility from 2005 to 2015. In addition, openness, labor flows, institutional hierarchy, and economic structure had a significantly positive effect on ULE during the period 1990–2015 in the YREB. Policy reforms are suggested to encourage the development of integrated transportation and urban land use at a large regional scale in China. Moreover, there is a need for a mindset shift from cities competing competition over land to cooperation between the cities in YREB.     

Approaches to valuing the hidden hydrological services of wetland ecosystems

This paper investigates the role of the production function approach in capturing the value of hydrological services of wetland ecosystems. Hydrological research in the Hadejia-Nguru wetlands in northern Nigeria suggests that the major role of the wet season inundation of the wetlands is in recharging the underlying aquifers. This paper shows that the hydrological services extend beyond direct use values, and have a significant economic value associated with them. Whereas the direct benefits provided by the wetlands, such as floodplain agriculture, fishing and forestry, have previously been assessed, this paper synthesizes the results of two approaches to capture the value of indirect benefits derived from the role of the wetlands in replenishing and maintaining groundwater resources within the wetland area.     

State land policy,land markets and geographies of manufacturing: The case of Beijing,China

The aim of this article is to explore the relationship between state land policies, land markets and geographies of manufacturing in Beijing. Industries have decentralised moving from the centre, and agglomerating in various types of development zone in the outer city. The new patterns of industrial location in Beijing are to a significant extent due to state land policies that impact on manufacturing geographies through land prices, the land supply system and land property reforms. However, industrial relocation involves not only negotiations between government and firms, but is also a game played among different levels of government. National, provincial, municipal, county and even rural level governments bargain with each other to shape and gain from the relocation of industries.     

Can firms learn by observing? Evidence from cross-border M&As

In the presence of high uncertainty and limited experience, can observing the actions of other acquiring predecessors help firms make better acquisition decisions? Using a sample of cross-border M&As conducted by US acquirers in developing countries, we document a positive and significant relationship between an acquirer's performance and its predecessors' acquisition activity. This relationship is especially pronounced in the prevalence of news events about the outcome of predecessors' acquisitions, when predecessors consist of US peers from the same industry and/or when targets are based in culturally distant countries. Our findings shed light on one channel through which information spillovers across industries and acquiring firms could be a key driver of value creation in developing market cross-border M&As.     

Land use planning around major risk installations: From EC directives to local regulations in Italy

This paper offers some reflections regarding the application of regional and provincial laws concerning major industrial risks and urban and land use planning, and focuses on their application problems and capabilities with reference to some practical cases. The European Directive “Seveso 2” was implemented in Italy with two national laws, and in Piedmont they were enforced with the “Guidelines for the assessment of industrial risk in land use planning”. According to the Guidelines, the municipalities had to introduce into their urban and land use planning instruments new criteria for the areas around Seveso plants. The application of the Guidelines requires a multidisciplinary approach but local authorities are often not sufficiently prepared for this kind of multilevel analysis, because they do not have the human or economic resources or even the technical abilities necessary to conduct it. As a result, they can underestimate the importance of a correct urban and land planning in the areas around major risk installations.     

VP-UML系统建模工具研究

随着面向对象技术的快速发展和应用，很多公司相继开发了支持面向对象技术的计算机辅助软件工程（Computer Aided Software Engineering，简称CASE）工具[1]。在大浪淘沙的技术进步大潮中，有些工具渐渐退出了历史舞台，并逐渐被人们所遗忘；但有些不断发展，并为人们所接受，从而被广泛使用。Visual Paradigm for UML（简称VP-UML）是一款功能强大、跨平台、使用便捷、直观的UML系统建模和CASE工具，它可以整合在其他CASE工具或者其他IDE工具中，这种“一站购物式”的软件解决方案要远远优于常规的Model-Code-Deploy的开发进程。本文讨论了VP-UML的基本功能和主要特点，为广大用户提供参考。     

Using simulated currency rainbow options to evaluate covariance matrix forecasts

In the literature one can find a number of different methods to evaluate covariance matrix forecasts, and in choosing among these one has to consider what the actual purpose of the forecasts is. In this paper we look at portfolios of currency rainbow options and how simulated trading of such options portfolios can be used as a preference free evaluation measure for the forecasted covariance matrix. The main advantage of using portfolios instead of single options, in addition to making it possible to study multivariate problems of arbitrary size, is the possibility it gives to rely on shorter data series. We apply the methodology to a system of four US dollar exchange rates and compare the relative performance of different forecasting models, among them the fairly new Orthogonal GARCH model.