Truthful mechanism design for multidimensional scheduling via cycle monotonicity

We consider the makespan-minimization problem on unrelated machines in the context of algorithmic mechanism design. No truthful mechanisms with non-trivial approximation guarantees are known for this multidimensional domain. We study a well-motivated special case (also a multidimensional domain), where the processing time of a job on each machine is either “low” or “high.” We give a general technique to convert any c-approximation algorithm (in a black-box fashion) to a 3c-approximation truthful-in-expectation mechanism. Our construction uses fractional truthful mechanisms as a building block, and builds upon a technique of Lavi and Swamy [Lavi, R., Swamy, C., 2005. Truthful and near-optimal mechanism design via linear programming. In: Proc. 46th FOCS, pp. 595–604]. When all jobs have identical low and high values, we devise a deterministic 2-approximation truthful mechanism. The chief novelty of our results is that we do not utilize explicit price definitions to prove truthfulness. Instead we design algorithms that satisfy cycle monotonicity [Rochet, J., 1987. A necessary and sufficient condition for rationalizability in a quasilinear context. J. Math. Econ. 16, 191–200], a necessary and sufficient condition for truthfulness in multidimensional settings; this is the first work that leverages this characterization.     

Collaborative innovation and policy support: the emergence of trilateral networks

ABSTRACT

The present article models the critical factors for a successful and evolutionarily stable National System of Innovation. We simulate a model, against the background of increasingly complex technologies, in a national process of agents’ interactions with social-dilemma characteristics. In particular, the articleinvestigates the emergence of a trilateral collaborative innovation alliance among ‘enterprise’, ‘university’ and ‘government’. We apply a tripartite evolutionary game with a replication process and explore the role and options of the public policy agent to support collaboration on innovation. We find that some policy mix, in particular, a combination of (1) public rewards for cooperation, (2) public punishment for non-cooperation and (3) settings of public cost controls and tax income from innovation, can promote broad and sustainable innovation alliances. For instance, threats of strong punishment, even with low public rewards for cooperation, may promote the formation of a collaborative innovation alliance. We run some sensitivity analyses of the results through parametric variation of two critical factors of the model, knowledge spillover and output elasticity of knowledge input. We find some qualifications for the velocity of the process.     

Econometric issues related to identification of the market power parameter

This study demonstrates the crucial role the specification of the cost function plays in identifying the market power parameter in autarky models. For constant marginal cost or marginal cost with quantity interacting with input prices, the market power parameter in autarky models in identified without a rotation of the demand curve. If a comodity is sold in both domestic and foreign markets, the market power parameters are identified regardless of the specific form of the marginal cost and demand specifications.     

Cellular telephones in the Israeli market: the demand,the choice of provider and potential revenues

This study presents the methodology, the estimates and a scenario for forecasting the demand for cellular telephones and their use in Israel. The analysis was based on the integration of three sub-models. The estimate of the consumer's decision on whether to purchase a cellular telephone and what type was obtained by using a discrete choice model of the multinomial logit type. The total number of cellular telephone purchases to be made in Israel during the years 1998–2008 was estimated using a logistic growth model employing aggregate data over time. The anticipated demand for airtime was based on findings of a survey carried out on a national sample, and on actual usage data on the various consumers during the years prior to the survey. The research shows the substantial economic potential of Israel's cellular telephone market.     

STATISTICAL UNITS STANDARDS AND CENTRAL REGISTER SYSTEMS: KEYS TO THE DEVELOPMENT OF ECONOMIC ACCOUNTING

National accountants, model builders and analysts who work with statistical material that has been compiled without the discipline of well-developed unit standards rules and central register controls may be constructing information systems that are basically unsound because of the uncertain nature of their building bricks of economic units.
This paper draws attention to the nature and importance of statistical unit standards and central register systems in the provision of economic statistics for economic accounting, planning and management. These are viewed as essential conceptual and operational tools for compiling economic statistics on an integrated basis and for making progress towards establishing a comprehensive data base with positive links between macro economic analysis and data about individual economic agents. Some of the problems and possibilities for countries who wish to proceed along these lines are discussed, with particular reference to the experience of Australia.     

Executive Agencies, Performance Targets and External Reporting

Since 1988, the role of Next Steps executive agencies has been crucial in delivering central government services. Agencies were established to improve service delivery, with changes being supported by an increasing focus on quantification. The Government argued that performance measures and targets are vital in supporting management in planning and controlling the operation of an agency, and that they are also important in providing a basis for reporting to those outside its immediate management—an aspect of discharging accountability. This article discusses the connections between targeting and reporting performance in agencies and, through an empirical study of business plans, corporate plans and annual reports, shows the extent of such linkages. The article provides evidence that key targets in planning documents of agencies provide a useful platform for external reporting, although improvements can still be made.     

The Effect of CFO Personal Litigation Risk on Firms’ Disclosure and Accounting Choices

In Gantler v. Stephens (2009), the Delaware Supreme Court makes explicit that corporate officers owe the same fiduciary duty to the firm and shareholders as do board members. The decision increased the risk of non‐board‐serving officers being added as named defendants to investor litigation but did not change the risk of corporate litigation. Analyzing the effect of the Gantler ruling on non‐board‐serving CFOs, we find a significant change in their behavior as well as in their firms’ disclosure and accounting choices. Specifically, speech tone during earnings calls of non‐board‐serving CFOs becomes more negative when compared to board‐serving CFOs and the firm's CEO, and non‐board‐serving CFO firms disclose bad news earlier and report more conservatively. Results are stronger for firms incorporated in Delaware. Our findings suggest that CFOs respond to personal litigation risk over and above corporate litigation risk.     

Joined‐Up Government and the Challenges to Accounting and Accountability Researchers

Abstract: Collaborative working between public sector bodies in the UK, sometimes involving partnerships with private sector and not‐for‐profit organisations, was promoted heavily by the Labour Government (1997–2010) under what is sometimes labelled ‘Joined‐Up Government’. The Conservative – Liberal Democrat Coalition Government, elected in 2010, appears likely to continue to promote such policies. The objective of this paper is to raise awareness of what may be seen as an important and developing agenda in public services in which accounting and accountability researchers are barely visible. The paper reviews the meanings and motivations of joined‐up government and its development in the UK. A number of challenges are presented, including the need to refocus research from an entity to a network perspective; to assess whether joined‐up government delivers value‐for‐money services; to join the debate on the development of related accounting techniques; to seek precision in specifying accountability mechanisms and to adapt our research methods.