نتایج جستجو برای: survey design
تعداد نتایج: 1292484 فیلتر نتایج به سال:
در این رساله عملکرد یک موتور توربوپراپ که ملخ آن از نوع clark y 5868-r9 است در شرایط نقطه طرح (on- design) و خارج از نقطه طرح (off- design) مورد مطالعه قرار گرفته شده است. موتور توربوپراپ یکی از انواع موتور جت در تراست بالا و مصرف مخصوص سوخت پایین است که عدد ماخ پروازی آن هرگز از 8/. تجاوز نمی کند. دور موتور های توربوجت به حدی زیاداست که در صورت اتصال مستقیم به ملخ، سرعت نوک تیغه های ملخ به سرع...
In an earlier workshop paper [HMWH95], we set out a number of issues we regarded as important in VR system design. Some of these were investigated in the AVIARY system [WHH+93, SW94], and work on these is continuing. In 1993 we began a collaborative project with CADCentre Ltd in Cambridge, to explore the potential of VR systems for the design of very large-scale process plants – structures such...
This paper examines the impact of participation in women’s savings and credit groups organized by Save the Children USA on women’s empowerment, contraceptive use, and fertility in a rural area of Bangladesh. The data are drawn from a panel survey conducted in 1993, shortly before the groups were formed, and in 1995 after interventions began. This quasi-experimental design enables us to identify...
Context scenarios are widely used for assessing the robustness of strategies and policies in both the private and the public sector. Royal Dutch Shell, for instance, has become renowned for it’s strategic use of context scenarios in the seventies and developed a methodological stepwise approach for scenario construction. Nowadays context scenarios have become one of the standard tools of policy...
There is some evidence that Virtual Reality (VR) can contribute to raise interest and motivation in students and to effectively support knowledge transfer, since the learning process can be settled within an experiential framework. However, the practical potential of VR is still being explored: understanding how to use Virtual Reality to support training and learning activities presents a subst...
Destination choice modelling can be employed to analyse the choices that tourists make when selecting between different holiday destinations. The data for a destination choice modelling analysis are often obtained from a survey in which prospective tourists state their choices in a series of hypothetical choice scenarios. In each scenario, the choice alternatives are described in terms of desti...
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