Search results1 – 10 of 13
This chapter proposes a simple, fairly general, test for global identification of unconditional moment restrictions implied from point-identified conditional moment…
This chapter proposes a simple, fairly general, test for global identification of unconditional moment restrictions implied from point-identified conditional moment restrictions. The test is a Hausman-type test based on the Hausdorff distance between an estimator that is consistent even under global identification failure of the unconditional moment restrictions, and an estimator of the identified set of the unconditional moment restrictions. The proposed test has a χ2 limiting distribution and is also able to detect weak identification. Some Monte Carlo experiments show that the proposed test has competitive finite sample properties already for moderate sample sizes.
This chapter proposes a simple procedure to estimate average derivatives in nonparametric regression models with incomplete responses. The method consists of replacing the…
This chapter proposes a simple procedure to estimate average derivatives in nonparametric regression models with incomplete responses. The method consists of replacing the responses with an appropriately weighted version and then use local polynomial estimation for the average derivatives. The resulting estimator is shown to be asymptotically normal, and an estimator of its asymptotic variance–covariance matrix is also shown to be consistent. Monte Carlo experiments show that the proposed estimator has desirable finite sample properties.
“The Elephant in the Corner: A Cautionary Tale About Measurement Error in Treatment Effects Models” by Daniel L. Millimet discusses the current use of the unobserved-outcome framework to estimate population-averaged treatment effects, and it exposes the sensitivity of these estimators to assumption of no measurement error. The Monte Carlo simulation evidence in this chapter indicates that “nonclassical measurement error in the covariates, mean-reverting measurement error in the outcome, and simultaneous measurement errors in the outcome, treatment assignment, and covariates have a dramatic, adverse effect on the performance of the various estimators even with relatively small and infrequent errors” (Millimet article, p. 1–39). To some extent, all the estimators analyzed by Millimet are based on weak functional form assumptions and use semiparametric or nonparametric methods. Millimet's results indicate the need for measurement error models be they parametric or nonparametric models, see Schennach (2007), Hu and Schennach (2008), and Matzkin (2007) for some recent research in nonparametric approaches. Chapter 7 develops a Bayesian estimator that can handle some of the measurement errors discussed in this chapter.
The paper provides a new definition of healthy and functional food considering the case of sorghum, which is dealing with environmental challenges, calling for exploration…
The paper provides a new definition of healthy and functional food considering the case of sorghum, which is dealing with environmental challenges, calling for exploration of eco-conscious consumers' behavior in the free-from food innovative market.
Through a systematic literature review and bibliometric analysis, this article offers a deep and broad outlook on a sustainable open innovations approach for agri-food systems. The bibliometric analysis includes a total of 198 scientific papers, deeply analyzed through Bibliometrix package.
Results show increasing academic interest in sustainable innovations for the agri-food system, where the relevance of the food-grade sorghum is noticed. An open innovation approach is called for to deal with environmental challenges.
Theoretically, the research offers a new definition of healthy and functional food in line with current environmental challenges. It also provides a deep literature review on eco-conscious consumers and food-grade sorghum as functional food in the context of the free-from food market.
We argue that in order to address the contemporary challenges that organizations and societies are facing, the field of organization development (OD) requires frameworks…
We argue that in order to address the contemporary challenges that organizations and societies are facing, the field of organization development (OD) requires frameworks and skills to focus on the eco-system as the level of analysis. In a world that has become economically, socially, and technologically highly connected, approaches that foster the optimization of specific actors in the eco-system, such as individual corporations, result in sub-optimization of the sustainability of the natural and social system because there is insufficient offset to the ego-centric purposes of the focal organization. We discuss the need for OD to broaden focus to deal with technological advances that enable new ways of organizing at the eco-system level, and to deal with the challenges to sustainable development. Case examples from healthcare and the agri-foods industry illustrate the kinds of development approaches that are required for the development of healthy eco-systems. We do not suggest fundamental changes in the identity of the field of organizational development. In fact, we demonstrate the need to dig deeply into the open systems and socio-technical roots of the field, and to translate the traditional values and approaches of OD to continue to be relevant in today’s dynamic interdependent world.
Se Heine non giunse fino a Roma, in compenso vi arrivarono altri non meno illustri tedeschi, il cui genio si immortalò nel campo musicale. Per non parlare di Händel, che…
Se Heine non giunse fino a Roma, in compenso vi arrivarono altri non meno illustri tedeschi, il cui genio si immortalò nel campo musicale. Per non parlare di Händel, che visitò Roma nel 1707, nè di Gluck, che vi venne nel 1756, ricorderemoper il'700 — Wolfango Amedeo Mozart e — per 1'800 — Riccardo Wagner.
The nature of buyer‐supplier relationships has been closely linked to nation specific explanations and concern has been expressed in literature regarding the…
The nature of buyer‐supplier relationships has been closely linked to nation specific explanations and concern has been expressed in literature regarding the transferability of co‐design best practices to different firms and countries. On the other hand, many attempts to isolate best practices and to apply them on a global scale have been proposed in the literature. Contributes to the issue by analysing a controversial case study based on the Italian automotive industry. Results show that few aspects of the Japanese contextual features and American ones existed when the major Italian car maker decided to outsource component design and dramatically change its supply chain management approach. Moreover, despite the massive involvement of suppliers at a very early stage of the car maker new product development process, not all the best practices deemed to be necessary when implementing a co‐operative buyer‐supplier relationship have been applied. Argues that these results lead us to question the very nature of effective buyer‐supplier relationships as described by the dominant literature and suggests implications for practitioners and for future research.
Effectively handling knowledge is crucial for any organization to survive and prosper in the turbulent environments of the modern era. Leadership is a central element for…
Effectively handling knowledge is crucial for any organization to survive and prosper in the turbulent environments of the modern era. Leadership is a central element for knowledge creation, acquisition, utilization and integration processes. Based on these considerations, this study aims to offer an overview of the evolution of the literature regarding the knowledge management-leadership relationship published over the past 20 years.
A bibliometric analysis coupled with a systematic literature review were performed over a data set of 488 peer-reviewed articles published from 1990 to 2018.
The authors discovered the existence of four well-polarized clusters with the following thematic focusses: human and relational aspects, systematic and performance aspects, contextual and contingent aspects and cultural and learning aspects. The authors then investigated each thematic cluster by reviewing the most relevant contributions within them.
Based on the bibliometric analysis and the systematic literature review, the authors developed an interpretative framework aimed at uncovering several promising and little explored research areas, thus suggesting an agenda for future knowledge management-leadership research. Some steps of the paper selection process may have been biased by the interpretation of the researcher. The authors addressed this concern by performing a multiple human subject reading process whose reliability was confirmed by a Krippendorf’s alpha coefficient value >0.80.
To the best knowledge, this is the first study to map, systematize and discuss the literature concerned to the topic of the knowledge management-leadership relationship.