نتایج جستجو برای: production and distribution
تعداد نتایج: 16989078 فیلتر نتایج به سال:
Improper distribution of income is one of the factors that weakens economic justice and affects poverty, which is influenced by the state of macroeconomic variables. According to the theoretical literature of the subject, economic sanctions are among the components that affect the economic activity of individuals, households and companies. This research has been written with the aim of investig...
Nowadays, there is a great deal of attention for regulations of carbon emissions to enforce the decision-makers of production and distribution networks to redesign their systems satisfactorily. The literature has seen a rapid interest in developing novel metaheuristics to solve this problem as a complicated optimization problem. Such difficulties motivate us to address a production-distribution...
Production of nanostructured aluminum matrix composite powder by high energy ball milling is investigated. Scanning electron microscopy analysis as well as the tap and green density measurements were used to optimize the milling time needed for the completion of the mechanical milling process. Also, we studied the particles morphology and size distribution change with milling time and its corre...
methodology non-native participants in this study were sixty ba students majoring in english literature and teaching english as a foreign language at khayyam university of mashhad. they were senior students, between 21 to 24 years old, who had studied english for at least three and a half years and had passed several courses including grammar, reading, conversation, and writing. this was assum...
Background: Tumor necrosis factor-beta or lymphotoxin-alpha (LT-α), IL-4 and IL-10 are determining factors in immunity against BCG. Allelic polymorphisms in the regulatory regions of their genes affect the rate of cytokine production and therefore, the host’s ability in BCG containment. Objective: To study the prevalence of –590 (C/T) and –592 (C/A) allelic distribution of IL-4 and IL-10 promo...
Der sicheren Übertragung und Aufbewahrung vertraulicher Daten kommt in unserer von Information dominierten Gesellschaft immer grössere Bedeutung zu. Die heute gebräuchlichen Verfahren zur Datenverschlüsselung bieten allerdings nur berschränkte, so-genannt berechenmässige, Sicherheit. Das bedeutet, dass diese prinzipiell von einem Angreifer, der über genügend Rechenleistung (zum Beispiel einen, ...
introduction: attention to food safety and health at all stages from production to consumption is inevitable. inappropriate sanitary status of the food production, distribution and supply centers caused food-borne diseases. the aim of this study was to evaluate the environmental health indicators of halva and tahini production centers in the city of ardakan in 2013. materials & methods: this is...
According to the temperature distribution of water injection well-bore in highly deviated wells under different conditions and unstable temperature field heat conduction principles, a true three-dimensional model was established to analyze the law of variation on temperature of highly deviated wells during the water injection process, and to analyze the factors that influence the water injectio...
In this paper, we consider a newsvendor who is going to invest on dedicated or flexible capacity, our goal is to find the optimal investment policy to maximize total profit while the newsvendor faces uncertainty in lead time and demand simultaneously. As highlighted in literature, demand is stochastic, while lead time is constant. However, in reality lead time uncertainty decreases newsvendor's...
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