Ride service outsourcing for profit maximization

Transportation service subcontracting is becoming an effective means of business for many leading carriers to maintain their market dominance and profitability. This research is based on an outsourcing practice in one of the few largest limousine fleet companies in the US, whose (mostly advance) demand for services often exceeds its capacity. We develop a model for ride service outsourcing. A column generation method is proposed. The outsourcing decision is made simultaneously with pre-scheduling of in-house ride services as well as staffing. Test with services data indicates that the developed method dramatically improves the carrier’s outsourcing decision.     

How to rescue the environment： The uncommon idea

Successful solution to any environmental problem implies working with Knightian uncertainty that explicitly deals with decision making under conditions of unstructured randomness. Nature did not endow us with clear set of laws. A ＂wild＂ type of randomness that we will never discern due to its unstable properties makes the assignment of corresponding probabilities impossible. For that reason, the consideration of general economical factors within cost/benefit analysis must fail. So, instead of governmental imervention and cup and trade scheme, we propose direct financial market out of certificates on environmental improvements. They could be applied unaided by a model specification. The approach is based on Principal-Agent method. We propose to fill a huge gap in what is called Free Market Environmentalism （FME）, and make the proposal of financial market property rights for situations when ＂property＂ rights can not be set.     

Time Management in the Cost Evaluation of Limited Resource Programs

Planning, implementing and evaluating an intervention program all hinge around time. A program’s actions are planned according to a forecast of the time required to achieve certain objectives, and the program’s implementation among a group of users is conditioned by its real time application. Similarly, program evaluation needs to take into consideration the time resource when analysing objectively the extent to which a program’s targets have been reached, and when conducting a cost analysis of the program. In limited resource programs, any disparity between the scheduled time and the real time available can have serious consequences, and even undermine a program’s efficacy. Time management, above all where resources are limited, is therefore the linchpin in the planning, implementation and evaluation of an intervention program. In this study we analyse the utility of PERT and CPM as basic tools for the efficient time management of limited resource programs.     

A new Cramer-Von Misses cointegration test with application to environmental Kuznets curve

This article introduces a new Cramer-Von Misses (CVM) cointegration test robust to nonlinearities. We characterize nonlinear cointegration in terms of a nonlinear moving-average filter (high pass filter) of a matrix based on permutation matrices on the discrepancy of empirical distributions. A Cramer-Von Misses (CVM) test statistic is proposed for testing the null hypothesis of two independent random walks against a broad range of cointegrating alternatives with monotonic nonlinearities and level shifts in the cointegration relationship. We derive the asymptotic distribution of this induced-order Cramer-Von Misses (CVM) cointegration test. This new non-parametric test statistic has two important properties: the invariance to monotonic transformations of the series and the robustness for the presence of several parameter shifts or structural changes. We analyse the small sample properties of this test by Monte Carlo simulations and evaluate the power of the test. Finally, this CVM test is applied to the analysis of long run environmental Kuznets curve which relates economic growth and pollution. In particular, we consider a nonlinear cointegration between gross domestic product (GDP) and CO2 emissions. Our new CVM test is able to find evidence of cointegration while classical single equation cointegration tests are not.     

The road to cooperative supply‐chain environmental management: trust and uncertainty among pro‐active firms

The pressures on firms to improve their environmental performance have caused them to look outside their boundaries towards their supply chains. In such approaches, firms work with vendors to develop the environmental profile of supplied materials (for example) by reducing materials' toxicity or the amount of packaging used. While large firms can mandate that their suppliers comply with such initiatives, more cooperative approaches are generally likely to be more fruitful. This article presents the results from an exploratory, two phase study of the conditions under which firms engage in cooperative supply‐chain environmental management. First, the authors conducted interviews with 14 leading‐edge firms. In the second phase, the authors conducted a theoretical‐sample survey to examine a model of the antecedents of cooperative supply‐chain environmental management. The results suggest that inter‐firm trust, uncertainty and pro‐active environmental management most directly affect the extent to which firms engage in cooperative supply‐chain environmental management. Copyright © 2007 John Wiley & Sons, Ltd and ERP Environment.     

A History of Australian Corporate Bonds

We compile a new unit‐record data set of Australian corporate bond issuance, which sheds light on developments in the bond market since the early twentieth century. Reflecting the evolution of the economy, privatisations, and changes in the regulatory landscape the following trends are noteworthy: (i) issuance today is largely by private entities whereas government‐owned corporations dominated historically; (ii) the issuer base has shifted away from non‐financial corporations towards banks, with corporations now raising a large share of funds offshore; and (iii) the investor base has shifted away from direct holdings by households towards holdings through superannuation/managed funds and holdings by non‐residents.     

Slipping Anchor? Testing the Vignettes Approach to Identification and Correction of Reporting Heterogeneity

We propose tests of the two assumptions under which anchoring vignettes identify heterogeneity in reporting of categorical evaluations. Systematic variation in the perceived difference between any two vignette states is sufficient to reject vignette equivalence. Response consistency - the respondent uses the same response scale to evaluate the vignette and herself - is testable given sufficiently comprehensive objective indicators that independently identify response scales. Both assumptions are rejected for reporting of cognitive and physical functioning in a sample of older English individuals, although a weaker test resting on less stringent assumptions does not reject response consistency for cognition.     

Effects of policy instruments on farm investments and production decisions in the Spanish COP sector

Our article assesses the impacts regarding on-farm investment and production decisions resulting from the Partially Decoupled (PD) payment scheme implemented during the 1990s and first half of the 2000s within the framework of the Common Agricultural Policy (CAP). The Spanish Cereal, Oilseed and Protein (COP) sector is taken as a case study regarding this effect due to its economic and political relevance in Spain. The empirical analysis is applied to farm-level data from 2000 to 2004 using the Farm Accountancy Data Network (FADN). We use a reduced-form application of the dual model of investment under uncertainty and estimate a system of censored and uncensored equations. PD payments are found to increase short-run production and generate a statically significant increase in the investment in farm assets. Results also show the importance of assessing the effects of PD payments in a dynamic framework as applied in this article.     

The role of rating agencies in the market for charitable contributions: An empirical test

Rating agencies play the role of information intermediaries in the market for donations. These watchdog organizations obtain and interpret accounting data and other information about charitable organizations and report ratings to help donors select among the many organizations soliciting contributions. In the age of the internet, information from Internal Revenue Service Form 990 returns prepared by tax-exempt organizations is more readily accessible than ever before. This study examines whether the zero- to four-star ratings provided by Charity Navigator have additional information content for donors. Charity Navigator was selected because its rating system relies almost exclusively on the 990 returns and presumably adds value by incorporating peer-group expectations for various ratios and by presenting straightforward and concise data. Using a random sample of 405 charities rated by Charity Navigator, our results suggest that rating changes do impact contributions. Positive rating changes were associated with an increase in contributions and organizations with a decline in rating were associated with decreased contributions. These effects were in addition to what would be predicted using an efficiency ratio commonly computed from Form 990 accounting data and other control variables.