Impact of frequency of alignment of physical and information system inventories on out of stocks: A simulation study

Inaccuracy in the information system inventory as compared to the physical inventory may lead to out of stocks. Inaccuracy may occur for many reasons, a principal one being random losses such as theft. One way to reduce this inaccuracy is to adjust the inventory information in the systems at some regular frequency. Such alignments are quite expensive in practice. Thus how often to align the two inventories is the focus of this research. A simulation model is employed to investigate the effect of such loss defined by the stock loss parameter (λ) and the frequent alignment of physical and information system inventories on the stockout (S_out) and average inventory (I). A term to be called the effective value of stock loss parameter is introduced to signify the effect of frequency of alignment (f) on S_out. The results derived in this study provide a powerful tool in the hands of an inventory manager. It has been noted that, so far as stockout is concerned, by selecting a moderate value of alignment frequency (f), the effective value of stock loss parameter (λ_e) can be reduced to∼ λ/f. The accuracy of S_out and I values across a number of runs in the simulation studies, sensitivity of S_out and I on various parameters and the nature of stochastic demand distribution, and application of these results with or without deployment of RFID to reduce the loss due to stockout are also discussed. The results, verified under various scenarios, indicate that there is a significant reduction in stockout loss when the alignment is done monthly vs. annually, but it does not add much value beyond a monthly check.     

THE DIVIDEND PAYOUTS OF PRIVATE FIRMS: EVIDENCE FROM TAX COURT DECISIONS

To study the dividend payouts of private firms we extend the agency cost/external financing cost trade-off model of dividend payouts to include the accumulated earnings tax (AET). The firm's optimal dividend policy trades off the benefits from lower agency costs against external financing costs and the AET. Information from tax court records reveals that private firms' payouts are influenced by both agency costs and the AET.     

INFORMATION ASYMMETRY AND OPTIONS TRADING

This paper demonstrates that options trading does not have a uniform impact on the volatility of underlying stocks. Although uninformed traders are able to hedge the risk of underlying stocks by maintaining opposite positions in the options market, informed traders hold outright options positions to capitalize on their information. This hedging behavior tends to reduce noise in the stock market, whereas the speculating behavior tends to generate noise in the stock market. As a result, stocks that were originally volatile, i.e., traded primarily by uninformed traders, will be stabilized by the introduction of options. Conversely, stocks that were more stable become destabilized by options trading.     

School dropouts in Ontario: A simulation of the phenomenon in a local school system

The article describes a simulation model and some rather lengthy statistical exercises analyzing the high school dropout phenomenon in Ontario and estimating the effect of policy measures which might affect the loss rates. The article is one of a series of dropout studies which have been carried out by the faculty and research staff of the Ontario Institute for Studies in Education since 1972. The earlier ones were surveys. The annual time series data which they established are now being used for simulations such as those reported here.     

Disclosure of GAAP line items in earnings announcements

We provide new evidence on the disclosure in earnings announcements of financial statement line items prepared under Generally Accepted Accounting Principles (GAAP). First, we investigate the circumstances that might provide disincentives generally for GAAP line item disclosures. We find that managers who regularly intervene in the earnings reporting process limit disclosures at the aggregate level and in each of the financial statements so as to more effectively guide investor attention to summary financial information. Specifically, this disclosure behavior obtains when managers habitually cater to market expectations, engage in income smoothing, or use discretionary accruals to improve earnings informativeness. Second, we predict and find that the specific GAAP line items that firms choose to disclose are determined by the differential informational demands of their economic environment, consistent with incentives to facilitate investor valuation. However, these valuation-related disclosure incentives are muted when managers habitually intervene in the earnings reporting process.     

Estimation of catastrophic quantities of toxic chemicals by atmospheric dispersion modeling

In response to the Bhopal disaster and several repeated chemical releases (even though of less dangerous magnitude) in New Jersey, the state of New Jersey passed a bill on January 8, 1986, which is aimed at the prevention of such catastrophic releases in the state. This bill is officially referred to as the Toxic Catastrophe Prevention Act (TCPA). The TCPA identified eleven specific Extraordinarily Hazardous Substances (EHS). Table 1 lists these eleven EHS identified in the Act and their reportable quantities. The TCPA aims at the prevention of the release of these EHS into the environment. The Legislature did not provide the basis and background of the development of the reportable quantities of these eleven EHS. The TCPA mandates that the New Jersey Department of Environmental Protection (NJDEP) shall expand the list of these EHS and shall “… correlate the substances with the quantities required to produce the potentially catastrophic circumstances.”     

Exploring the benefits of international government bond portfolio diversification strategies

We use the Bayesian approach of Wang (1998) to examine the diversification benefits of investing in international government bonds. We find that no short-selling constraints substantially reduce but do not eliminate the diversification benefits when only investing in G7 government bonds with different maturities. There are significant diversification benefits when using the G7 bonds, an inflation-linked bond index, and emerging market bonds even in the presence of no short-selling constraints. The superior performance is driven by the emerging markets bonds. We also find that the diversification benefits vary across different economic states.