this research was conducted to determine the effect of gamma ray (gr) (100 and 150 kgy), sodium hydroxide (50 g/kg dm) and calcium oxide (160 g/kg dm) on gas production parameters and in vitro digestibility of soybean straw. all treatments, except for the gamma ray (100 and 150 kgy) did not have gas production up to 4 hours after incubation and there was a lag time. from 8 to 96 hours of incuba...

Measuring timetable robustness is a complex task. Previous efforts have mainly been focused on simulation studies or measurements of time supplements. However, these measurements don't capture the production flexibility of a timetable, which is essential for measuring the robustness with regard to the trains' commercial activity commitments, and also for merging the goals of robustness and effi...

More and more companies on the global market are today capable of manufacturing individual or small-series orders at comparable prices and quality. The main difference between these companies is the expected production order development-time and the observance of delivery deadlines. Before making a bid, the sales department must establish what operations will have to be carried out for a partic...

objective: the aim of the present study was the production of recombinant lentviruses that express mir-16. after transduction, altered expression levels of mirna and its target protein were analyzed. methods: a dna fragment that contained the mir-16 precursor was cloned in a lentiviral plasmid. lentiviral vector particles were produced by transient calcium phosphate co-transfection of 293t cell...

The Trading Agent Competition (TAC) Supply Chain Management (SCM) game presents trading agents with several difficult scheduling decisions. Each agent must decide how to build and deliver goods across multiple time periods in the presence of uncertain information about the environment. Stochastic programming (SP) is suggested as a natural, adaptable, and robust solution to scheduling in stochas...

Half-life is a unique characteristic of radioactive substances used in a variety of medical treatments. Radioisotope F-18 used for diagnosing and monitoring many types of cancers has a half-life of 110 minutes. As such, it requires careful coordination of production and delivery by manufacturers and medical end-users. To model this critical production and delivery problem, we develop a mixed in...

This paper presents a method for performance evaluation, ranking and clustering based on the double-frontier view to analyze the complex networks. The model allows us to open the structure of the “black box” and can help to obtain important information about efficient and inefficient points of the system. In this paper, we consider a three-stage network, in respect to the additional desirable a...

This article describes the dynamic model of assembly process of reducer is presented as part of an activity performed in a workshop kanban simulation aimed at students of industrial engineering. The main objective of the model developed is to analyze the behavior of inventory levels workstations and accumulations of kanban cards (production orders) derived from the effects of the cycle time kan...