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...

Deriving a Model for Determining the Relative Utility of Residential Apartments for Private Buyers

, M.Sc. Thesis Sharif University of Technology Behdad, Kian (Author) ; Isaei, Mohammad Taghi (Supervisor)

Abstract

In this research, the aim is to find the factors that can influence on the utility perception of both private buyers and experts. What's more, the share of each factor on the overall utility is derived by the use of AHP technique. The next step is to derive a model that contain all the factors seen by private and inexpert buyers., and their relative weight. At the next step, the aime is to complete the model by adding the factors not seen by all private buyers, but advised by residential apartment experts and their relative weight. The model should be able to rank different residential apartments, when the value of each factor is given for each ot the apartments.

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...

Building the external knowledge map for iranian manufacturing SMEs

, Article Proceedings of the European Conference on Knowledge Management, ECKM, 4 September 2008 through 5 September 2008, Southampton ; 2008 , Pages 565-574 ; 20488963 (ISSN); 9781905305537 (ISBN) Naderi, I ; Ashoori, M. T ; Behdad, K ; Sharif University of Technology

2008

Abstract

It is widely recognized that knowledge is an essential strategic resource for a firm to achieve sustainable competitive advantage and Knowledge Management (KM) is a fundamental concept for those interested in the ever changing business world. However, KM has received little attention in Small and Medium sized Enterprises (SMEs). Unique characteristics of SMEs affect their approach in knowledge management, so different KM processes should be applied in these firms. SMEs have very simple structures, so they have less difficulty in managing their internal knowledge than large organizations. But this is not the case for external knowledge management, especially external knowledge acquisition...

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...

Efflux pump inhibitory activity of biologically synthesized silver nanoparticles against multidrug-resistant Acinetobacter baumannii clinical isolates

, Article Journal of Basic Microbiology ; Volume 60, Issue 6 , 2020 , Pages 494-507 Behdad, R ; Pargol, M ; Mirzaie, A ; Karizi, S. Z ; Noorbazargan, H ; Akbarzadeh, I ; Sharif University of Technology

Wiley-VCH Verlag 2020

Abstract

This study was carried out to investigate the possible efflux pump inhibitory activity of biologically synthesized silver nanoparticles (AgNPs) against multidrug-resistant (MDR) Acinetobacter baumannii isolates. In this study, the physicochemical characteristics of synthesized AgNPs were investigated using scanning electron microscopy (SEM), transmission electron microscopy (TEM), X-ray diffraction (XRD), and Fourier transform infrared spectrophotometer (FTIR) methods. Subsequently, MDR A. baumannii isolates were recovered from clinical samples and the phenotypic cartwheel efflux assay and polymerase chain reaction (PCR) were used to elucidate the possible presence of efflux pump in MDR...

Niosome-encapsulated tobramycin reduced antibiotic resistance and enhanced antibacterial activity against multidrug-resistant clinical strains of Pseudomonas aeruginosa

, Article Journal of Biomedical Materials Research - Part A ; 2020 Hedayati Ch, M ; Abolhassani Targhi, A ; Shamsi, F ; Heidari, F ; Salehi Moghadam, Z ; Mirzaie, A ; Behdad, R ; Moghtaderi, M ; Akbarzadeh, I ; Sharif University of Technology

John Wiley and Sons Inc 2020

Abstract

In the current study, niosome-encapsulated tobramycin based on Span 60 and Tween 60 was synthesized and its biological efficacies including anti-bacterial, anti-efflux, and anti-biofilm activities were investigated against multidrug resistant (MDR) clinical strains of Pseudomonas aeruginosa. The niosomal formulations were characterized using scanning electron microscopy, transmission electron microscopy, and dynamic light scattering measurement. The encapsulation efficiency was found to be 69.54% ±; 0.67. The prepared niosomal formulations had a high storage stability to 60 days with small changes in size and drug entrapment, which indicates that it is a suitable candidate for pharmaceutical...

Niosome-encapsulated tobramycin reduced antibiotic resistance and enhanced antibacterial activity against multidrug-resistant clinical strains of Pseudomonas aeruginosa

, Article Journal of Biomedical Materials Research - Part A ; Volume 109, Issue 6 , 2021 , Pages 966-980 ; 15493296 (ISSN) Hedayati Ch, M ; Abolhassani Targhi, A ; Shamsi, F ; Heidari, F ; Salehi Moghadam, Z ; Mirzaie, A ; Behdad, R ; Moghtaderi, M ; Akbarzadeh, I ; Sharif University of Technology

John Wiley and Sons Inc 2021

Abstract

In the current study, niosome-encapsulated tobramycin based on Span 60 and Tween 60 was synthesized and its biological efficacies including anti-bacterial, anti-efflux, and anti-biofilm activities were investigated against multidrug resistant (MDR) clinical strains of Pseudomonas aeruginosa. The niosomal formulations were characterized using scanning electron microscopy, transmission electron microscopy, and dynamic light scattering measurement. The encapsulation efficiency was found to be 69.54% ±; 0.67. The prepared niosomal formulations had a high storage stability to 60 days with small changes in size and drug entrapment, which indicates that it is a suitable candidate for pharmaceutical...