Thoughts on HVAC System Design Based on Green Concept

تحلیل موتور توربوپراپ در شرایط on-design و off-design

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...

mortality forecasting based on lee-carter model

over the past decades a number of approaches have been applied for forecasting mortality. in 1992, a new method for long-run forecast of the level and age pattern of mortality was published by lee and carter. this method was welcomed by many authors so it was extended through a wider class of generalized, parametric and nonlinear model. this model represents one of the most influential recent d...

Thoughts on Social Design

Design of Interactive Learning System Based on Intuition Concept Space

The theory of intuition learning is briefly reviewed and a model of the learning process is presented. The paper then discusses and characterizes an Interactive Intuition Learning System (IILS) and its relationship to experiential learning and learning pattern. From the initial intuition decision system defined by the experience judgment, a series of learning interval-systems with various exper...

Thoughts on the Concept of Stress

In Section 5 below we use the notation for volume integrals as explained in Chapter 4 of Vol.II of [FDS]. In particular, let a mapping h : D −→ W be given whose domain D is a region in a Euclidean space, a vector space, or the real line, and whose codomain W is a linear space. Then, the volume integral of h over a suitable subregion P of D, if meaningful, is denoted by ∫ P h or ∫ P h(x)dx. In t...