Stock market volatility is the systematic risk faced by investors who hold a market portfolio (e.g., a stock market index fund). Schwert (1989b) has undertaken an extensive study of stock market volatility, using historical data back to the 19th century. Some of his major findings are illustrated in Figure 1, which plots quarterly stock market volatility for the post-World War II period.1 The f...

In this paper, we have proposed artificial neural network for the prediction of Saudi stock market. The proposed predictions model, with its high degree of accuracy, could be used as investment advisor for the investors and traders in the Saudi stock market. The proposed model is based mainly on Saudi Stock market historical data covering a large span of time. Achieving reasonable accuracy rate...

Introduction: Although availability of essential medicines is one of the most important objectives of national medicines' policies, the unavailability of essential medicines remains a major problem for poor countries. Objective: The study was carried out to measure availability and duration of out of stock of essential medicines in Sudan. Method: The study was carried out using the World Health...

Research and development efforts in the field of commercial applications have invested strategic interest design intelligent systems that correctly handle out-of-stock events. An event refers to a scenario which such customers do not availability products they want buy. This generates important economic damage producer store. Addressing problem is currently great as it would allow limiting dama...