Models for the production, storing and distribution elements of supply chains are proposed based on linear differential equations. The models consider the dynamics of inventories and production rates. A bounded control for the inventories of the mentioned elements is introduced for regulating the inventory level to a desired value manipulating production or incoming rates. Stability conditions ...

Inventories exist throughout the supply chain in various forms for various reasons. Since carrying these inventories can cost anywhere from 20 to 40% of their value a year, managing them in a scientific manner to maintain minimal levels makes economic sense. This paper presents a near-optimal (s, Q)-type inventory policy for a production/distribution network with multiple suppliers replenishing...

We comprehensively examine the effects of stock return volatility on firms’ financial and investment decisions. Consistent with theories of investment with financing frictions, firms with high volatility actively reduce their leverage, cut investment, increase cash holding, cut non-cash current assets such as inventories and account receivables, and cut dividend. The effects of volatility are s...

Quality strategies more often than not focus on satisfying the customers’ needs and vow to make and implement policies aiming at fulfilling expectations of customers and other interested parties. While generally a Quality Strategy addresses all the variables of Internal Environment; the extent to which the current generic models (of making Quality Strategy) address External Environment is limit...

Continuous improvement implies a focus on solving a series of quality problems, reducing inventories, eliminating waste and increasing productivity. However, it is clear that being lean, cost-effective and of high quality is not enough and it does not guarantee the growth of any business. This paper aims to highlight the importance of operational excellence, which is a concept referring to an e...

This paper develops an analytically tractable general equilibrium model of inventory dynamics. Inventories are introduced into a standard RBC model through a precautionary stockout-avoidance motive. Under persistent aggregate demand shocks, the model is broadly consistent with the U.S. business cycle and key features of inventory behavior, including (i) a large inventory stock-to-sales ratio an...

Abstract: This paper proposes an improvement in the form of modeling the demand in models of stochastic inventories. For these purposes, it is proposed to occupy the Kernel estimation method to the demand per unit of time and demand during the lead time to generate input scenarios for a stochastic programming in two-stage, in a model of continuous review with shortage. An application of this me...

A self-diagnosis inventory is both a response instrument and a tool for an individual to assess his or her risk. Three experiments show that the manner in which a depression selfdiagnosis inventory is administered and constructed affects the manner in which a respondent interprets behavioral symptoms. This in turn affects (a) self-reports of whether the symptoms apply to the respondent; (b) the...

The sound inventories of the world’s languages show a considerable extent of symmetry. It has been postulated that this symmetry is a reflection of the human physiological, cognitive and societal factors. There have been a large number of linguistically motivated studies in order to explain the selforganization of these inventories that arguably leads to the emergence of this symmetry. A few co...

The research described in this article estimated the relative incidence of protocols invalidated by linguistic incompetence, inattentiveness, and intentional misrepresentation in Webbased versus paper-and-pencil personality measures. Estimates of protocol invalidity were derived from a sample of 23,994 protocols produced by individuals who completed an online version of the 300-item IPIP repres...