Nathan Levialdi

Bio: Nathan Levialdi is an academic researcher from University of Rome Tor Vergata. The author has contributed to research in topics: Liberalization & Order (exchange). The author has an hindex of 13, co-authored 45 publications receiving 596 citations. Previous affiliations of Nathan Levialdi include University of Perugia & University of Cassino.

Vertical Integration in International Telecommunication System

Abstract: The process of liberalization and privatization is drastically altering the links among international telecommunications carriers The model presented in this paper analyses the international telecommunications market illustrating the effects of vertical mergers, under symbiotic production conditions, when vertically integrated and unintegrated carriers coexist The effect of competition is analysed both in the final market and in the intermediate one where carriers compete over tariffs to get an appropriate distribution of profits In particular, the results show the relations between final market prices, intermediate tariffs and market dimensions and their implications on profits

Evaluation of research in efficiency and productivity:a survey and analysis of the first 30 years of scholarly literature in DEA

Abstract: Since the original Data Envelopment Analysis (DEA) study by Charnes et al. [Measuring the efficiency of decision-making units. European Journal of Operational Research 1978;2(6):429–44], there has been rapid and continuous growth in the field. As a result, a considerable amount of published research has appeared, with a significant portion focused on DEA applications of efficiency and productivity in both public and private sector activities. While several bibliographic collections have been reported, a comprehensive listing and analysis of DEA research covering its first 30 years of history is not available. This paper thus presents an extensive, if not nearly complete, listing of DEA research covering theoretical developments as well as “real-world” applications from inception to the year 2007. A listing of the most utilized/relevant journals, a keyword analysis, and selected statistics are presented.

Introduction to quality engineering. designing quality into products a

Abstract: Contents: Variety and Quality. Variability loss and tolerance. Determining tolerances. Tolerance design and experimental design. Offline and online quality control. Parameter design and tolerance design: case study. Experimental design for smaller is better characteristics. Experimental design for larger is better characteristics. Bypassing the S/N ratio: spring experiment. Experimental design for dynamic characteristics.

The Sustainability Imperative

Abstract: Most executives know that how they respond to the challenge of sustainability will profoundly affect the competitiveness—and perhaps even the survival—of their organizations. Yet most are flailing around, launching a hodgepodge o f initiatives without any over arching vision or plan. That’s not because they don’t s e e sustainability as a s t ra tegic issue. Rather, it’s because t h e y think t h e y ’ r e facing an unprecedented journey fo r which there is no road map. But there is a road map. Our research into the forces that have shaped the competitive landscape in recent decades reveals that ―business megatrends‖ have features and trajectories in common. Sustainability is an emerging megatrend, and thus its course is to some extent predictable. Understanding how firms won in prior megatrends can help executives craft the strategies and systems they’ll need to gain advantage in this one. The concept of megatrends is not new, of course. Businessman and author John Naisbitt popularized the term in his 1982 best seller of the same name, referring to incipient societal and economic shifts such as globalization, the rise of the information society, and the move from hierarchical organizations to networks. Our focus is on business megatrends, which force fundamental and persistent shifts in how companies compete. Such transformations arise from technological innovation or from new ways of doing business, and many factors can launch or magnify the process of change. Business megatrends may emerge from or be accelerated by financial crises, shifts in the social realities that define the marketplace, or the threat of conflict over resources. The geopolitics of the Cold War, for example, drove the innovations that launched both the space race and rapid developments in the field of microelectronics—ultimately unleashing the information technology megatrend. Electrification, the rise of mass production, and globalization were also megatrends, as was the quality movement of the 1970s and 1980s. The common thread among them is that they presented inescapable strategic imperatives for corporate leaders.

A review of fuzzy AHP methods for decision-making with subjective judgements

Abstract: Analytic Hierarchy Process (AHP) is a broadly applied multi-criteria decision-making method to determine the weights of criteria and priorities of alternatives in a structured manner based on pairwise comparison. As subjective judgments during comparison might be imprecise, fuzzy sets have been combined with AHP. This is referred to as fuzzy AHP or FAHP. An increasing amount of papers are published which describe different ways to derive the weights/priorities from a fuzzy comparison matrix, but seldomly set out the relative benefits of each approach so that the choice of the approach seems arbitrary. A review of various fuzzy AHP techniques is required to guide both academic and industrial experts to choose suitable techniques for a specific practical context. This paper reviews the literature published since 2008 where fuzzy AHP is applied to decision-making problems in industry, particularly the various selection problems. The techniques are categorised by the four aspects of developing a fuzzy AHP model: (i) representation of the relative importance for pairwise comparison, (ii) aggregation of fuzzy sets for group decisions and weights/priorities, (iii) defuzzification of a fuzzy set to a crisp value for final comparison, and (iv) consistency measurement of the judgements. These techniques are discussed in terms of their underlying principles, origins, strengths and weakness. Summary tables and specification charts are provided to guide the selection of suitable techniques. Tips for building a fuzzy AHP model are also included and six open questions are posed for future work.

Full engagement: the integration of employee engagement and psychological well‐being

Abstract: Purpose – By introducing the concept of “full engagement,” this article aims to propose that employee engagement is more likely to be sustainable when employee well‐being is also high.Design/methodology/approach – Research evidence covering the separate concepts is reviewed and evidence of the benefits that both engagement and well‐being confer on organizations is presented.Findings – Most current perspectives on employee engagement include little of direct relevance to well‐being and reflect a narrow, commitment‐based view of engagement. This view focuses too heavily on benefits to organizations. A broader conception of engagement (referred to as “full engagement”), which includes employee well‐being, is a better basis for building sustainable benefits for individuals and organizations.Research limitations/implications – Research exploring the links between employee engagement and well‐being is needed to validate and develop the propositions put forward in this article.Practical implications – A model fo...