Iranian Household Saving Behavior

, M.Sc. Thesis Sharif University of Technology Samaee, Kian (Author) ; Souri, Davood (Supervisor)

Abstract

This paper decomposes the saving rate into cohort, age and year effects. This objective is accomplished by constructing a pseudo-panel that amalgamates nineteen consecutive, cross-sectional Household Income and Expenditure Surveys from 1991 to 2009. To construct year-of-birth cohorts with consistent composition over time, analyses are limited to those born between 1926 and 1975. Results reveal that those belonging to younger cohorts save a higher fraction of their income relative to their predecessors at the same age. Moreover, the increase in the saving rate can not be explained by the significant decline in household size or rise in educational attainment among younger cohorts. Closer...

Investigation of Effect of Temperature and Tension on Precipitation Behavior of AEREX350 Superalloy

, M.Sc. Thesis Sharif University of Technology Samaee Aghmiyoni, Vahid (Author) ; Asgari, Sirous (Supervisor)

Abstract

AEREX350 is a wrought Ni-Co base superalloy which was first developed as a fastener alloy and is a member of MP family of alloys which are thermo-mechanically processed. Due to chemical composition of AEREX350, the alloy benefits from precipitation hardening and solid solution strengthening as well as cold working and can be used in higher temperatures. To investigate the effect of deformation during precipitation, solution-treated samples was underwent hot compression test up to strain of 0.5 at range 650-800˚C, range of γ΄ formation. It is seen that work-hardening and deformation mechanism of high temperature deformation is slip and as a result its structure is dislocation but in room...

Revenue Management in Airline Industry

, M.Sc. Thesis Sharif University of Technology Kian, Ramez (Author) ; Eshghi, Kourosh (Supervisor)

Abstract

The Revenue management concept has been studied and noticed by researchers for more than forty years. Although the applications of revenue management grow in different industries continuously, airline industry which is the origin of this research area is the pioneer of developing and representing new models. In the last few years, there has been a trend to enrich traditional revenue management models. In this thesis we first, reviewed most aspects of revenue management studies especially in airline industry, then choice-based customer behavior concept is introduced. Also a case sample study in customer choice behavior has been developed with time scale considering and remodeled. According to...

Theoretical and Experimental Study of Selective Withdrawal From Two Layer Fluid With Topographic Effects

, M.Sc. Thesis Sharif University of Technology Kian, Rozita (Author) ; Jamali, Mirmosaddegh (Supervisor)

Abstract

Selective withdrawal is withdrawing water with desired quality from a reservoir and has many applications in water quality management of reservoirs. Topographic effects such as a sill alter the withdrawal layer properties. In this study, the effect of a sill on selective withdrawal of a two-layer fluid through a line sink at the bottom of a rectangular reservoir is studied using two-layer hydraulics theory, numerical model and laboratory experiments. Experiments were done for studying surge, and the results are compared with two-layer hydraulics theory and numerical model. After reservoir gate is opened, some disturbances upstream of sill lead to creation of a surge. The results show this is...

A new comprehensive framework for ranking accepted orders and supplierselection in make-to-order environments

, Article 2009 International Conference on Computers and Industrial Engineering, CIE 2009, 6 July 2009 through 9 July 2009 ; 2009 , Pages 919-924 ; 9781424441365 (ISBN) Rabbani, M ; Ahmadi, G ; Kian, R ; Sharif University of Technology

2009

Abstract

This paper presents a new decision making framework for supplier selectionin a make-to-order-system (MTO) while establishing an information loop between"sale"and"purchasing" functions which play important rolesin successful satisfying of customers. The order entry stage outputs, includingaccepted orders' requirements and their priorities are reflected into thesupplier selection phase; and in return, the outputs of the supplier selectionmodel are fed back into the sale department to revise the orders attributesaccording to the system's supplying capabilities. A ranking procedure usingFuzzy data-envelopment-analysis (DEA) and multi attribute utility model (i.e.similarity to ideal solution...

Generation expansion planning of stand-alone micro-power systems under uncertainty using advanced planning methodology

, Article Energy Exploration and Exploitation ; Volume 26, Issue 4 , 2008 , Pages 221-239 ; 01445987 (ISSN) Khodayar, M. E ; Rahimi Kian, A ; Ehsan, M ; Sharif University of Technology

2008

Abstract

In this paper a strategic planning framework for selecting the best configuration and capacity of different power generating technologies including renewable energy resources in stand-alone micro-power systems is proposed. The proposed framework is composed of three decision making techniques to identify the most feasible and efficient plans according to attributes and uncertain parameters in the planning environment. The framework considers the robustness and risk analysis of different plans exposed to uncertainties in the planning environment and selects the configurations that meet the objectives with the least risk exposure. The proposed methodology is implemented as a case study of a...