Electrification of a city bus network—An optimization model for cost-effective placing of charging infrastructure and battery sizing of fast-charging electric bus systems

The deployment of battery-powered electric bus systems within the public transportation sector plays an important role in increasing energy efficiency and abating emissions. Rising attention is given to bus systems using fast charging technology. This concept requires a comprehensive infrastructure to equip bus routes with charging stations. The combination of charging infrastructure and bus batteries needs a reliable energy supply to maintain a stable bus operation even under demanding conditions. An efficient layout of the charging infrastructure and an appropriate dimensioning of battery capacity are crucial to minimize the total cost of ownership and to enable an energetically feasible bus operation. In this work, the central issue of jointly optimizing the charging infrastructure and battery capacity is described by a capacitated set covering problem. A mixed-integer linear optimization model is developed to determine the minimum number and location of required charging stations for a bus network as well as the adequate battery capacity for each bus line. The bus energy consumption for each route segment is determined based on individual route, bus type, traffic, and other information. Different scenarios are examined in order to assess the influence of charging power, climate, and changing operating conditions. The findings reveal significant differences in terms of required infrastructure. Moreover, the results highlight a trade-off between battery capacity and charging infrastructure under different operational and infrastructure conditions. This paper addresses upcoming challenges for transport authorities during the electrification process of the bus fleets and sharpens the focus on infrastructural issues related to the fast charging concept.     

Faddists,Enthusiasts and Canadian Divas: Broadcasting Quotas and the Supply Response

This paper constructs a model of the recorded music market to investigate the consequences of local content requirements in broadcasting for the “internationalization” of domestic music. It models the entry decisions of bands, the contracting decisions of record companies, the airplay decisions of radio stations and the radio listening and recording purchasing decisions of consumers. The paper shows that a local content quota leads, perversely, to the increased internationalization of domestic music. A quota that also requires increased broadcasting of “new” music yields an additional welfare loss but does nothing to a record company's incentives to sign up new bands.     

Plant-level nonconvex output adjustment and aggregate fluctuations

In most manufacturing industries plant-level output is adjusted along three margins of capacity utilization: shiftwork, weekend work, and closing temporarily down. Due to the discrete and lumpy nature of these margins, only a fraction of plants adjust output in response to shocks. In a business cycle model calibrated to establishment-level observations, these nonconvexities make aggregate output less volatile than when plants can adjust smoothly. Further, the mass of adjusting plants is larger in downturns than in upturns, leading to counter-cyclical volatility of aggregate output and government policy being slightly more effective in recessions than in expansions.     

Me,Myself, and Future Generations: The Role of Affinity and Effectiveness in the Creation of Consumer Environmental Stewardship (CENS)

Policymakers, consumer advocate groups, and researchers agree that consumers need to increase their proenvironmental behaviors if a decent standard of living is to be ensured for future generations. Despite high levels of environmental concern, consumers still refrain from large‐scale adoption of proenvironmental behaviors. Social marketers agree that a change in attitudes is not enough to stimulate the necessary behavioral change and are looking for ways to help consumers overcome the costs (e.g., price premiums, inconvenience) that are often associated with proenvironmental behaviors. Currently, consumers often see proenvironmental behavior as a trade‐off between short‐term personal benefits and longer term collective benefits. The authors contribute to the social marketing literature on proenvironmental behavior by introducing the concept of Consumer Environmental Stewardship (CENS), which centers on the use of intrinsic motivation to stimulate a personal sense of responsibility for the environment. The findings, based on a survey and three experiments, show that the stimulation of consumers’ affinity with future generations (AFGs) and perceived consumer effectiveness (PCE) can help to promote CENS, which in turn raises proenvironmental behaviors. However, this research also shows that increasing levels of AFGs can backfire and result in lower levels of CENS, if consumers experience low levels of PCE.     

Are stricter investment rules contagious? Host country competition for foreign direct investment through international agreements

We argue that competitive diffusion is a driver of the trend toward international investment agreements with stricter investment rules, namely defensive moves of developing countries concerned about foreign direct investment (FDI) diversion in favor of competing host countries. Accounting for spatial dependence in the formation of bilateral investment treaties and preferential trade agreements that contain investment provisions, we find that the increase in agreements with stricter provisions on investor-to-state dispute settlement and pre-establishment national treatment is a contagious process. Specifically, a developing country is more likely to sign an agreement with weak investment provisions if other developing countries that compete for FDI from the same developed country have previously signed agreements with similarly weak provisions. Conversely, contagion in agreements with strong provisions exclusively derives from agreements with strong provisions that other FDI-competing developing countries have previously signed with a specific developed source country of FDI.     

Effects of ethnic advertising on consumers of minority and majority groups: the moderating effect of humor

The effects of portrayals of ethnic endorsers in advertising are ambiguous. These portrayals strengthen the ethnic identity of ethnic minority groups, thus leading to positive responses toward the ad. They can lead to negative responses, because these portrayals can be perceived as stereotyped. Humor is a tool that can increase positive effects of identity-building and reduce negative effects of stereotyping. In this study, we investigate how humor moderates the effects of ethnic advertising on consumers from ethnic minority and majority groups. We find that humor supports the effects of traditional portrayals for both groups. Moreover, the effect of traditional portrayals combined with humor is strongest for the minority group. These findings provide evidence for the positive effects of humor in ethnic advertising and thus provide new insights to the stereotyping, ethnic advertising, and humor literature. The findings have practical implications for advertising using ethnic endorsers, humor, or targeted at ethnic minority groups.     

The combined impact of managerial and relational capabilities on innovation in firms

In this paper, a survey of more than 1600 firms in the five largest city regions of Norway is described in order to examine how a firm's innovative capacity is affected by three types of factors: factors related to the manager, the structure of the firm and the broader geographical location. By combining perspectives from the fields of management and economic geography in a logistic regression analysis, we find that the two key drivers of firm-level innovation in Norway are the presence of open-minded managers and evidence of collaboration with international partners. Moreover, these two factors are mutually reinforcing, as firms with open-minded managers also tend to engage more with international partners and vice versa.     

Heterogeneity in bank pricing policies: The Czech evidence

We estimate the pass-through from market interest rates to bank interest rates using heterogeneous panel cointegration techniques to address heterogeneity at the bank level in the Czech Republic. The results indicate heterogeneity in bank pricing in the short, but not in the long term. Mortgage rates and firm rates typically adjust to money market changes, but often less than fully in the long run. Large corporate loans have a smaller mark-up than small loans. Consumer rates have a high mark-up and do not exhibit a cointegration relationship with money market rates even in the long run. Next, we examine how bank characteristics determine the nature of interest rate pass-through in a cross-section of Czech banks. We find evidence for relationship lending, as banks with a stable pool of deposits smooth interest rates and require a higher spread as compensation. Large banks are not found to price their products less competitively. Greater credit risk increases vulnerability to money market shocks.     

Market selection with learning and catching up with the Joneses

We study the market selection hypothesis in complete financial markets, populated by heterogeneous agents. We allow for a rich structure of heterogeneity: individuals may differ in their beliefs concerning the economy, information and learning mechanism, risk aversion, impatience and ‘catching up with the Joneses’ preferences. We develop new techniques for studying the long-run behavior of such economies, based on Strassen’s functional law of the iterated logarithm. In particular, we explicitly determine an agent’s survival index and show how the latter depends on the agent’s characteristics. We use these results to study the long-run behavior of the equilibrium interest rate and the market price of risk.