In this paper, the asymptotic decay of finite time ruin probabilities is studied. An insurance company is considered that
faces heavy-tailed claims and makes investments in risky assets whose prices evolve according to quite general semimartingales.
In this setting, the ruin problem corresponds to determining hitting probabilities for the solution to a randomly perturbed
stochastic integral equation. A large deviation result for the hitting probabilities is derived that holds uniformly over
a family of semimartingales. This result gives the asymptotic decay of finite time ruin probabilities under sufficiently conservative
investment strategies, including ruin-minimizing strategies. In particular, as long as the insurance company invests sufficiently
conservatively, the investment strategy has only a moderate impact on the asymptotics of the ruin probability. 相似文献
Recently, we have witnessed a strong growth in the internationalization of many firms' product development activities. However, the lack of attention devoted by scientific research to the management of international innovation contrasts sharply with the importance attached to it as a cornerstone of international business success. Although several empirical studies and normative theories have specified the communication requirements in innovation teams, an empirically based insight is definitely needed on the communication requirements and requirements that prevail in the complex context of international innovation teams, in which the participants are located in different company units, countries, and cultures. This article addresses the following research question: viewing international innovation as an interfunctional activity, what are the communication requirements an international innovation team is facing, and what are the communication capabilities (interface mechanisms) that may be adopted to initiate, develop, and launch the new product effectively and efficiently? An extensive case study research project was designed to develop a comprehensive theoretical framework. Over a two year time period, the research team has investigated selected innovation projects in four European multinational corporations. The analysis of the case study data suggests five requirements that determine the effectiveness and efficiency of communication in international product development teams: network transparency, knowledge codification, knowledge credibility, communication cost, secrecy. To cope with these communication requirements, organizations may create firm level capabilities (parallel structures, cross‐functional and inter‐unit climate, communication infrastructure, goal congruence) and team level capabilities (core team, team leadership, formalization, procedural justice). The evidence from the in‐depth case study research indicates that these mechanisms provide a parsimonious and powerful approach to address the communication requirements in international product innovation teams. After the information processing framework proposed by Tushman and Nadler [124], the adoption of these mechanisms is expected to improve innovation effectiveness. This holds important consequences for the management of international product innovation projects. First, the innovating firm must balance centralization and decentralization, employ formal as well as informal strategies, and integrate ad‐hoc and permanent strategies. Second, it highlights the critical role of the project leader. Given the fact that companies often select the most available person, rather than the best person for the job, the allocation of light weight project leaders may create heavyweight problems in international teams. Third, following the argument in favor of procedural justice, the absence of involvement may severely hinder cross‐functional commitment to international innovation projects. Fourth, the innovating firm must also actively manage the communication flows with external parties. Failure to do so may result in flawed specifications, and a limited understanding about product design and market strategies. 相似文献
Proponents of free trade argue that export promotion distorts competition and undermines the multilateral trade system. In most countries export insurance is provided by the government and, consequently, is driven more by a broad range of policy objectives than purely insurance principles. This paper, however, shows that export promotion does not necessarily imply trade distortions and that most export destinations do not benefit from insurance premium subsidies. A significant policy implication of these findings is that the WTO and the EU are correct not to banish completely official export insurance. 相似文献
The purpose of this paper, building upon the papers included in this special section of Accounting in Europe on Corporate reporting in CEE countries and on our knowledge of the region, is to broaden out and open up dialogue and debate about how local institutions are evolving and impact the corporate reporting practices in this under-researched region. We begin by discussing the institutional context for conducting research on corporate reporting by entities in Central and Eastern Europe (CEE), within the broader context of emerging, transitional economies. We also reflect on how research conducted on CEE countries can make a relevant contribution to the international literature, and exemplify by summarizing the research questions and findings of the papers included in the special section. A future research agenda emerges, given the gaps in the international literature and the future research implications suggested in the papers constituting the special section. 相似文献
In EMU the question arises how countries will respond to adverse economic shocks. A statistical decomposition of output shocks in Belgium identifies the sectoral level as the main source of turbulence. This sectoral focus reduces the need for monetary, exchange rate and budgetary policies as macro-economic adjustment mechanisms but raises the issue of labour market flexibility. We show that wages fail to respond to sectoral and regional shocks. Similarly to the other EU countries, this absence of wage adjustments tends to amplify the regional divergence in production and employment performance, and can thus threaten political cohesion. 相似文献
We examine whether managers postpone the recognition of goodwill impairment by manipulating cash flows and the consequences of such a strategy on future performance. According to SFAS 142, an impairment loss must be recognized if the reporting unit's total fair value to which goodwill has been allocated is less than its book value. A growing body of empirical evidence shows that managers delay the recognition of goodwill impairment in accounting books. However, past literature is silent on how managers convince various gatekeepers (e.g., auditors, financial analysts) that recognizing an impairment loss is unnecessary although it seems economically justified. SFAS 142 requires managers to forecast future cash flows to justify the decision to recognize, or not, an impairment loss. Therefore, we predict that managers manipulate upward current cash flows to support their choice to avoid reporting an impairment loss. We also test whether or not this real earnings management is detrimental to future performance. Based on a sample of US firms over the period 2003–2011, we document that firms suspected of postponing goodwill impairment losses exhibit significantly positive discretionary cash flows compared to various control groups. We also find that this real activities manipulation is detrimental to future performance. 相似文献
Aims: There is an increasing interest in understanding patients’ preferences in the area of healthcare decision-making to better match treatment with patients’ preferences and improve treatment uptake and adherence. The aim of this study was to elicit the preferences of patients with a depressive disorder regarding treatment modalities.
Materials and methods: In a discrete-choice experiment, patients chose repetitively between two hypothetical depression treatments that varied in four treatment attributes: waiting time until the start of treatment, treatment intensity, level of digitalization, and group size. A Bayesian-efficient design was used to develop 12 choice sets, and patients’ preferences and preference variation was estimated using a random parameters logit model.
Results: A total of 165 patients with depression completed the survey. Patients preferred short (over long) waiting times, face-to-face (over digital) treatment, individual (over group) treatment, and one session per week over two sessions per week or one session per 2 weeks. Patients disfavoured digital treatment and treatment in a large group. Waiting time and treatment intensity were substantially less important attributes to patients than face-to-face (vs digital) and group size. Significant variation in preferences was observed for each attribute, and sub-group analyses revealed that these differences were in part related to education.
Limitations: The convenience sample over-represented the female and younger population, limiting generalizability. Limited information on background characteristics limited the possibilities to explore preference heterogeneity.
Conclusion: This study demonstrated how different treatment components for depression affect patients’ preferences for those treatments. There is significant variation in treatment preferences, even after accounting for education. Incorporating individual patients’ preferences into treatment decisions could potentially lead to improved adherence of treatments for depressive disorders. 相似文献
Control offers a critical differentiator between successful and failed interfirm service exchanges. The application of informal control to improve supplier performance has been well established, but the effect of formal control appears profoundly equivocal. This study proposes that the actual effect of formal control depends on its mode (output vs. behavior) and its relationship with the service type (mass vs. professional) and informal control. With survey data from 252 service buying organizations, the results indicate that output control interacts with service type to determine perceived supplier performance (PSP). Buyers’ reliance on high output control has a positive effect on PSP in mass service exchanges; this effect becomes negative in professional service exchanges. The effect of the interaction of behavior control and service type also depends on the presence of informal control. Buyers’ reliance on high behavior control exerts a more positive effect on PSP in professional service exchanges than in mass service exchanges, but only in the presence of informal control. These findings have key implications for both theory and practice. 相似文献
This paper studies the dynamics of volatility transmission between Central European (CE) currencies and the EUR/USD foreign exchange using model-free estimates of daily exchange rate volatility based on intraday data. We formulate a flexible yet parsimonious parametric model in which the daily realized volatility of a given exchange rate depends both on its own lags as well as on the lagged realized volatilities of the other exchange rates. We find evidence of statistically significant intra-regional volatility spillovers among the CE foreign exchange markets. With the exception of the Czech and, prior to the recent turbulent economic events, Polish currencies, we find no significant spillovers running from the EUR/USD to the CE foreign exchange markets. To measure the overall magnitude and evolution of volatility transmission over time, we construct a dynamic version of the Diebold–Yilmaz volatility spillover index and show that volatility spillovers tend to increase in periods characterized by market uncertainty. 相似文献
The decisions of foreign direct investors are profit-seeking, so deterioration in the primary income balance of the current account is observed. We estimate the common profitability profile of foreign direct investment (FDI) on a panel of mostly European countries in the period from 1990 to 2015. The FDI profitability life cycle has a non-linear time profile with duration of 16 years. Maximum profitability is reached in the sixth year after the initial investment. We then construct three scenarios for the evolution of total FDI earnings in the Czech Republic depending on the future FDI inflows (changing FDI stock) assumed. 相似文献