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101.
Alessandro Lomi 《Quality and Quantity》1993,27(2):139-155
The paper discusses a semiparametric random-effects approach to the problem of unobserved population heterogeneity in organizational research based on models for pooled cross-sectional time series count data. The analytical value of this approach rests in its ability to produce estimates of the structural parameters that do not depend on any specific assumption about the distribution of the heterogeneity components in the population. The practical value of the method proposed is illustrated in an empirical application to processes of organizational founding, and to the relation between density dependence and unobserved heterogeneity in spatially distributed organizational populations. The empirical evidence produced suggests that future studies of organizational founding at the population level will have to account for variation in observed as well as unmeasured (or unobservable) variables. 相似文献
102.
Yield spreads on EMU government bonds 总被引:4,自引:1,他引:3
103.
On the basis of data from two recent surveys on innovation diffusion in Italian manufacturing industry, this paper shows that informal R&D is an important part of the total R&D undertaken by small and medium sized firms. Nevertheless, when an output indicator such as the number and the nature of the innovations introduced by firms of different size is used, it emerges that small firms have introduced mainly incremental rather than major innovations. The paper therefore suggests that systematic R&D undertaken by large firms within structured laboratories is more effective (in terms of product innovations) than occasional R&D carried out by small firms. 相似文献
104.
More than 20 years after their introduction, directly elected mayors are key players in Italian urban governance. This article explains the main effects of this reform on local government systems and provides lessons for other countries considering directly elected mayors. 相似文献
105.
This article presents lower and upper bounds on the prices of basket options for a general class of continuous-time financial models. The techniques we propose are applicable whenever the joint characteristic function of the vector of log-returns is known. Moreover, the basket value is not required to be positive. We test our new price approximations on different multivariate models, allowing for jumps and stochastic volatility. Numerical examples are discussed and benchmarked against Monte Carlo simulations. All bounds are general and do not require any additional assumption on the characteristic function, so our methods may be employed also to non-affine models. All bounds involve the computation of one-dimensional Fourier transforms; hence, they do not suffer from the curse of dimensionality and can be applied also to high-dimensional problems where most existing methods fail. In particular, we study two kinds of price approximations: an accurate lower bound based on an approximating set and a fast bounded approximation based on the arithmetic-geometric mean inequality. We also show how to improve Monte Carlo accuracy by using one of our bounds as a control variate. 相似文献
106.
Drawing on the results of a systematic literature review of empirical studies, this paper sheds light on six broad factors that facilitate the initiation and implementation of co-production in public services. The factors are classified into two overarching categories: organizational factors, including organizational arrangements, professional roles, and managerial tools; and procedural factors, including participant recruitment, participant preparation, and process design. For each set of factors, the paper provides a series of management implications. It concludes with additional observations for practice. 相似文献
107.
Beate Franke Jean‐François Plante Ribana Roscher En‐shiun Annie Lee Cathal Smyth Armin Hatefi Fuqi Chen Einat Gil Alexander Schwing Alessandro Selvitella Michael M. Hoffman Roger Grosse Dieter Hendricks Nancy Reid 《Revue internationale de statistique》2016,84(3):371-389
The need for new methods to deal with big data is a common theme in most scientific fields, although its definition tends to vary with the context. Statistical ideas are an essential part of this, and as a partial response, a thematic program on statistical inference, learning and models in big data was held in 2015 in Canada, under the general direction of the Canadian Statistical Sciences Institute, with major funding from, and most activities located at, the Fields Institute for Research in Mathematical Sciences. This paper gives an overview of the topics covered, describing challenges and strategies that seem common to many different areas of application and including some examples of applications to make these challenges and strategies more concrete. 相似文献
108.
Cross‐border mergers and acquisitions in services: The role of policy and industrial structure 下载免费PDF全文
Alessandro Barattieri Ingo Borchert Aaditya Mattoo 《The Canadian journal of economics》2016,49(4):1470-1501
This paper explores the role of policy and economic structure in determining international mergers and acquisitions (M&A) in services sectors. The analysis is based on bilateral sectoral M&A flow data and detailed information on policy barriers from a new database. Restrictive investment policies are found to reduce the probability of M&A inflows, controlling for bilateral frictions such as geography. This negative effect, however, is mitigated in countries with relatively large shares of manufacturing and (to a lesser extent) services in GDP. The same result holds for the number of M&A deals concluded. Findings are robust to accounting for the potential endogeneity of policy restrictiveness. The evidence suggests that the impact of policy is state‐dependent and related to the composition of GDP in the target economy. 相似文献
109.
In this paper, we unveil a disregarded benefit of product market competition for firms. We introduce the probability of bankruptcy in a simple model where firms compete à la Cournot and apply for collateralized bank loans to undertake productive investments. We show that the number of competitors and the existence of outsiders willing to acquire the productive assets of distressed incumbents affect the equilibrium share of investment financed by bank credit. Using a sample of Italian manufacturing firms, mostly small- and medium-sized enterprises (SMEs), we found evidence showing that the degree of product market competition is positively correlated with the share of investment financed by bank credit only when outsiders are absent. 相似文献
110.
Loyalty programs are business practices increasingly pursued by companies in order to achieve customer loyalty. Recent studies have focused on the relationship between loyalty program structures (i.e., number and size of hierarchical tiers) and status levels (i.e., exclusivity) perceived by members. The current study examines two potential moderators of this relationship between program structure and perceived status. Specifically, the aim of our research was to test whether loyalty program structure affects status perceptions in more and less exclusive industries, and among consumers with more and less positive attitudes toward loyalty programs.An experimental design based on different scenarios was used. Two industries and three loyalty program structures were examined. In the airline industry, which is higher in perceived exclusivity, perceived status in the top tier of the loyalty program increased as the number of customers in the top tier decreased and as the number of tiers increased. Notably, however, loyalty program structure had no effect on perceived status in the supermarket industry, which is lower in perceived exclusivity. Moreover, even in the airline industry, status effects were only observed among respondents with a positive attitude toward loyalty programs. Those with neutral or negative attitudes toward loyalty programs were unaffected by the structure of the loyalty program. Thus, the effect of loyalty program structure on consumers' perceived status varied systematically across industries and across individuals. 相似文献