This paper presents new elimination rules for the Single Machine Problem with general earliness and tardiness penalties subject to release dates. These rules, based on a Lagrangian decomposition, allow to drastically reduce the execution windows of the jobs. We measure the efficiency of these properties by integrating them in a Branch-and-Bound. Tests show that instances with up to 70 jobs with...

We study a scheduling problem with deteriorating jobs, i.e., jobs whose processing times are an increasing function of their start times. We consider the case of a single machine and linear job-independent deterioration. The problem is to determine an optimal combination of the due date and schedule so as to minimize the sum of due-date, earliness and tardiness penalties. We give an O(n logn) t...

In the context of production scheduling, inserted idle time (IIT) occurs whenever a resource is deliberately kept idle in the face of waiting jobs. IIT schedules are particularly relevant in multimachine industrial situations where earliness costs and=or dynamically arriving jobs with due dates come into play. We provide a taxonomy of environments in which IIT scheduling is relevant, review the...

Combining ability for grain yield and other traits were evaluated in a half diallel fashion maize. Eight yellow maize inbred lines crossed excluding the reciprocals during summer season of 2018 at Gemmeiza station, resulting 28F1 along with check SC168 two locations (Gemmeiza Sids) 2019 season. A randomized complete block design (RCBD) four replications was used. Mean squares GCA SCA highly sig...

Plant growth regulators such as mepiquat chloride (MC) and chlormequat (CCC) are used to establish the balance between vegetative generative in cotton. This study was conducted compare different doses application time of CCC with MC un-treatment (control). The seven treatments including control (non-treatment), T1 (three sprays chloride), T2 (two T3 (0.4 L ha-1 CCC), T4 (0.5 T5 (0.6 CCC) T6 (0....

Abstract Most Workload Control literature assumes that delivery performance is determined by tardiness related measures only. While this may be true for companies directly deliver to end-customers, make-to-stock or firms are part of supply chains, producing early often means large inventories in the finished goods warehouse penalties incurred downstream chain. Some earlier studies used a so-cal...

One of the most important crops Mediterranean, watermelon (Citrullus lanatus), is almost exclusively established through seedlings. For many years, agronomists, nurseries, and farmers have aimed to produce use high-quality seedlings for better growth in field. However, seedling quality has not been examined as what defines subsequent plant, flower, fruit development, extent. Our aim was test wh...