Kesme ve ana malzeme seçimi problemleri kâğıt, metal, cam tekstil gibi endüstriler için oldukça önemli problemlerdir. işleminin etkin yapılamaması sonucunda oluşacak fireler hem işletmeler bir maliyete sebep olmakta de çevreye zarar verebilmektedir. Bu nedenle literatürde kesme problemini konu alan çalışmaların kısmı firelerin enküçüklenmesi ya da kullanılacak miktarının üzerine odaklanmaktadır...

In the paper, we consider a single-machine scheduling problem with generalized due dates, in which objective is to minimize total weighted work. This was proven be NP-hard by Mosheiov et al. [1]. However, exact complexity remains open. We show that strongly NP-hard, and weakly if lengths of intervals between consecutive dates are identical.

Although there is a vast and growing amount of literature on supply chain coordination, the majority of this literature focuses on make-to-stock systems and performance measures built around service and inventory levels. On the other hand, an increasing number of supply chains are better characterized as make-to-order systems. Fast and on-time delivery is obviously critical for any firm that op...

in order to evaluate the influence of different sowing dates on quantitative and qualitative yield in four winter rapeseed cultivars (brassica napus l.), two field experiments were carried out as split plot arrangement in complete block design with four replications. this research was performed in agricultural experimental station of agricultural and natural resources research center of markazi...

The authors study the structure of four-atom complexes which can be formed in collisions ultracold molecules, demonstrating that couplings between internal states large enough to increase their lifetime beyond semiclassical estimates. They consider interplay complex lifetime, photon absorption rate from trapping laser, and secondary inelastic with remaining molecules show it lead vastly differe...