Multi-objective inventory models of deteriorating items have been developed with vague and imprecise information about available storage area. Here, the objectives are (i) to maximize the profit, (ii) to minimize the wastage cost due to deterioration and (iii) to minimize the total production cost. These objectives are also fuzzy in nature. In these models, production rate is a decision variabl...

In many real scheduling environments, a job processed later needs longer time than the same job when it starts earlier. This phenomenon is known as scheduling with deteriorating jobs to many industrial applications. In this paper, we study a scheduling problem of minimizing the total completion time on identical parallel machines where the processing time of a job is a step function of its star...

Since training of a classifier takes time, usually some criterion other than the recognition rate is used for feature selection. This may, however, leads to deteriorating the generalization ability by feature selection. To overcome this problem, in this paper, we propose modified backward feature selection by cross validation. Initially, we determine the candidate set which consists of the feat...

We use a block iterative method for solving linear least squares problems. The subproblems are solved asynchronously on a distributed memory multiprocessor. It is observed that increased number of processors results in deteriorating convergence. We illustrate the deteriorating convergence by some numerical experiments. The deterioration of the convergence can be explained by contamination of th...

In this paper, we discuss a deteriorating system with one repairman. In this system, it is assumed that the component cannot be repaired ”as good as new” after failures and the repairman takes a delayed vacation, the repair time is taken into account. Under these assumptions, we derive a model of partial differential equations by using the geometric process and supplementary variable technique....

Thirty pilots flew a simulated VFR cross country flight into deteriorating weather with one of three levels of display support: a control display with standard instruments, a synthetic vision system (SVS) display depicting terrain and a highway in the sky (HITS), and a configuration in which the same SVS HITS display was augmented by an electronic moving map depicting weather. Results revealed ...

The items that incur a gradual loss in quality or quantity over time while in inventory are usually called deteriorating items. In reality, there are some items whose value or utility or quantity increase with time and those items can be termed as ameliorating items. In this paper, an effort has been made to incorporate these two opposite physical characteristics of stored items into inventory ...

An inventory system for deteriorating items, with ramp-type demand rate, under two-level trade credit policy taking account of preservation technology is considered. The objective of this study is to develop a deteriorating inventory policy when the supplier provides to the retailer a permissible delay in payments, and during this credit period, the retailer accumulates the revenue and earns in...

In this study, we propose a generalized replacement model for a deteriorating system with failures that could only be detected through inspection work. The system is assumed to have two types of failures and is replaced at the Nth type I failure (minor failure) or first type II failure (catastrophic failure) or at the working age T, depending on whichever occurs first. The probability of type I...

Uric acid Oreatinine Glucose Ornithine Spermine Guanidinoacetate Arginine Taurine “Aper 1.0mL at g/L A (and SD) iO.i4 (1.30) 52.8 (6.1) 5.89 (.67) .355 (.039) .247 (.101) .191 (.050) .099 (.055) <0.020 <0.020 a concentration of 1.0 indicate a stable or improving state and the second a deteriorating state, because Annesley et al. (2) reported high proportions of MM-i in serum in improving or sta...