ON THE CONSISTENCY OF REGRESSION‐BASED MONTE CARLO METHODS FOR PRICING BERMUDAN OPTIONS IN CASE OF ESTIMATED FINANCIAL MODELS

In many applications of regression‐based Monte Carlo methods for pricing, American options in discrete time parameters of the underlying financial model have to be estimated from observed data. In this paper suitably defined nonparametric regression‐based Monte Carlo methods are applied to paths of financial models where the parameters converge toward true values of the parameters. For various Black–Scholes, GARCH, and Levy models it is shown that in this case the price estimated from the approximate model converges to the true price.     

Surplus liquidity,central bank losses and the use of reserve requirements in emerging markets

Since the turn of the millennium, stocks of foreign reserves held by central banks in many emerging markets and developing countries have exceeded currency in circulation. To steer money market rates, these central banks have been absorbing liquidity from, rather than providing it to, the banking sector in their regular monetary policy operations. When interest rates in countries with major reserve currencies are low, the yield on foreign reserves is low. A higher interest rate on liquidity‐absorbing operations may expose central banks to losses. Although a central bank is not a profit‐maximizing institution, central bank losses can undermine the independence of the central bank. Using data for a large panel of central banks, this paper provides some evidence that central banks tend to apply low‐remunerated reserve requirements when profitability is at stake.     

Gamified interactions: whether,when, and how games facilitate self–brand connections

Firms increasingly use games to interact with their customers. Yet, surprisingly little is known about whether, when, and how such “gamified” interactions engage consumers with a firm’s brand, thereby facilitating self–brand connections. Building on flow theory, we show that gamified interactions that are highly interactive and optimally challenging facilitate self–brand connections, because such games lead to emotional and cognitive brand engagement. A field study and three experiments across various product domains and game designs support our theory. We also identify conditions under which consumers do not become engaged with a brand, namely when firms restrict their decisional control either to voluntarily participate in the game (i.e., compulsory play) or to spend as much time as desired playing the game (i.e., time pressure). Our findings advance existing knowledge about the use of games in marketing and provide important implications for how marketers can harness their potential to build self–brand connections.     

The determinants of commercial banking profitability in low-, middle-, and high-income countries

Using a broad bank-level dataset and the GMM estimator technique described by Arellano and Bover (1995), this paper analyses how bank-specific characteristics, macroeconomic variables, and industry-specific factors affect the profitability of 10,165 commercial banks across 118 countries over the period from 1998 to 2012. Grouping the countries according to three income levels, we show that the determinants of bank profitability included in our model can explain existing profitability differences among commercial banks in low-, middle-, and high-income countries. The profitability determinants vary quite widely across the different levels of income in terms of significance, sign and size of the effect. The level of income has thus an important impact on the determinants of bank profitability.     

Der deutsche Telekommunikationsmarkt im europäischen und internationalen Vergleich

According to current discussions, the German and European market for telecommunications is not as competitive as in the US or Asia. This paper shows — based on official data — that Germany has a high availability of broadband internet connections. It is not the availability but the usage that lags behind. Fixed telephone calls as well as broadband internet connections are rather cheap in Germany, but to be prepared for the digitalisation of the economy and society, more investments in infrastructure are needed. Surprisingly the US does have a higher number of network providers than Europe. What is missing in Europe is a provider that covers all countries of the European Union; current EBITDA does not show that the European market is too fragmented to make a profit.     

Terminierungsentgelte im Mobilfunkmarkt

This article analyses and compares two methods applied by national regulation authorities (NRAs) to determine mobile termination rates: “pure LRIC (long-run incremental costs)” and “LRIC+ (KeL)”. It can be shown that “pure LRIC”, favoured by the European Commission, is not coherent with standard microeconomic theory and hampers competition since “pure LRIC” does not cover all the costs borne by the mobile network operator. NRAs should apply “LRIC+” which is suited to set competition prices (since all costs are covered) and therefore guarantees the highest level of social welfare.     

Berlin Fashion Week：An Inspiring Blend of Genres and Formats

The sheer numbers are impressive：since it opened its doors for the very first time in January 2003,Berlin Fashion show has experienced steady growth.Berlin Fashion week from July 8th to14th was another milestone in this range of growths figures：More than 200,000professional visitors were attracted by over 200 events, 100 of which were fashion shows.     

Illustrating the Power of fsQCA in Explaining Paradoxical Consumer Environmental Orientations

Prior research on proenvironmental and prosocial behavior focuses primarily on explaining consistent rather than paradoxical tendencies. Even though this field receives wide attention from different scientific disciplines, findings for many causal factors of such proenvironmental orientation are contradictory. Nevertheless, knowing who those individuals are who think and behave in a pro‐/antienvironmental way or show a paradoxical behavior in this regard becomes useful for many different parties in human societies including public policy makers, governmental and nongovernmental environmental protection organizations, and for‐profit firms. Therefore, this study identifies those individuals who show neither consistent proenvironmental nor consistent antienvironmental tendencies as the “walkers‐only” and “talkers‐only” (i.e., for short, “walkers” and “talkers”). The former are defined as persons who put much effort into the recycling of waste materials but do not support pollution standards, whereas the latter term describes individuals who have a strong opinion with regard to the support of pollution standards yet do not engage in recycling efforts. The present study reports evidence of the existence of walkers and talkers. Further, this research is the first study to employ “fuzzy‐set qualitative comparative analysis” to identify the complex antecedent conditions for some individuals’ paradoxical belief–behaviors in the field of socially and environmentally directed behaviors and orientations. The findings yield valuable insights both into the applicability and benefits of configural analysis and for public policy makers and managers in waste management and recycling industries.