Through reduced 3-D printer cost, increased usability, and greater material selection, additive manufacturing has transitioned from business manufacturing to the average prosumer. This study serves as a representative model for the potential future of 3-D printing in the average American household by employing a printer operator who was relatively unfamiliar with 3-D printing and the 3-D design...

background and purpose: childbirth is a normal physiological process and a family event. women in various societies with different cultural backgrounds have diverse reasons for childbearing. understanding the reasons behind childbearing might help overcome some issues associated with early/late reproduction, or lack of desire to give birth. this study was an attempt to develop, validate, and st...

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The study aimed at evaluating the performance of Taibah University in function community service light knowledge economy, and determining most important requirements for activating economy. To achieve this, adopted descriptive survey method using a questionnaire (30) items distributed on two axes six Domains, it was applied to sample (187) faculty members. results showed that university’s role ...

The structure of developed economies has changed radically in recent decades. As late as the 1960s, it was reasonable to describe the economy in terms of three stages of production: primary production—of agricultural and mineral raw materials; secondary production—a manufacturing industry that transformed raw materials into items of final consumption; tertiary production—a sector that provided ...

Dynamic auctions are trading mechanisms for discovering market-clearing prices and efficient allocations based on price adjustment processes. This paper studies the computational issues of dynamic auctions for selling multiple indivisible items. Although the decision problem of efficient allocations in a dynamic auction in general is intractable, it can be solved in polynomial time if the econo...

In knowledge Economy Times, it’s necessary for knowledge alliance Enterprise (KAE) to build up efficient, reliable information resources management system (IRMS) to make use of the information resources (IR) more availably. This article starts from the characteristics of enterprise information resources (EIR) based on knowledge alliance, analyzing the requirements of establishing IRMS, designin...

BACKGROUND Healthy dietary patterns are a global priority to reduce non-communicable diseases. Yet neither worldwide patterns of diets nor their trends with time are well established. We aimed to characterise global changes (or trends) in dietary patterns nationally and regionally and to assess heterogeneity by age, sex, national income, and type of dietary pattern. METHODS In this systematic...