A single machine scheduling problem with delivery time is considered. Job’s delivery time has deterioration effect. For the same processing time model of minimizing different objectives, it is given optimal sequences, respectively. For the same deterioration ratio model, we also give optimal sequences for different objectives. Mathematics Subject Classification: 91A35

This paper presents inventory models for perishable items with stock dependent selling rate. The selling rate is assumed to be a function of current inventory level and rate of deterioration is taken to be constant. Under instantaneous replenishment with zero lead time, the model incorporates aspects such as complete, partial, and no backlogging. EOQ is determined for maximizing the total profi...

The authors report two cases of suddenly deteriorated accommodative esotropia with amblyopia during part-time occlusion therapy. A 7-year-old girl with right accommodative esotropia, which was well controlled, showed marked increase in esodeviation after part-time occlusion and regained orthophoria without occlusion. This phenomenon was repeated. Recession of both medial recti was performed and...

in this research two models for pricing and inventory decisions of complementary products with and without deterioration assumption are developed. in both of them, we assumed that the demand function of each product is dependent on own price and the price of another one. the aim of this paper is to optimize the total profit of integrated system such that the optimal values for the price of each...

Pipelines are extensively used engineering structures which convey fluid from one place to another. Most of the time, pipelines are placed underground and are encumbered by soil weight and traffic loads. Corrosion of pipe material is the most common form of pipeline deterioration and should be considered in both the strength and serviceability analysis of pipes. The study in this research focus...

In this paper a deterministic inventory model is developed when the deterioration is constant. Demand rate is a function of selling price and holding cost is taken as time dependent. The model is solved allowing shortage in inventory. The results are solved with the help of numerical example by using Mathematica 5.1. The sensitivity analysis of the solution has done with the changes of the valu...

BACKGROUND AND PURPOSE Neurological deterioration (ND) is a devastating complication after intracerebral hemorrhage but little is known about time course and predictors. METHODS We performed a retrospective cohort study of placebo patients in intracerebral hemorrhage trials. We performed computed tomographic scans within 3 hours of symptoms and at 24 and 72 hours; and clinical evaluations at ...

Does Mental Productivity Decline with Age? Evidence from Chess Players We use data on international chess tournaments to study the relationship between age and mental productivity in a brain-intensive profession. We show that less talented players tend to leave the game in the earliest phases of their career. When the effects of age on productivity vary with unobserved ability, commonly used fi...

The 2014 Indian general election marked a single party – the Bharatiya Janata Party, winning a majority of seats in Lok Sabha, the first time since the 1984 election. The Congress, the other main national party, suffered its worst ever defeat. This election was termed by some as a 'critical election' signalling the advent of a new phase of a ‘BJP dominated’ party system in India. In this paper,...