Loading...
Search for:
amini-lari--mansour
0.132 seconds
Total 441 records
Gaining Competitive Advantages on E-CRM in Financial Institutions in Iran Through B2B Model
, M.Sc. Thesis Sharif University of Technology ; Miremadi, Alireza (Supervisor) ; Amini Lari, Mansour (Supervisor)
Abstract
Due to violent and ferocious competition and global changes of new trends, directions and new ways of doing business, financial institutions grapple with new challenges and opportunities in today business. The advancement in technology, information and communication has forced banks and financial institutions into hard competition. In this new era technology, people as the customer are the elements on which the banks are concentrating them to manage customer relationship. In this complicated situation, Electronic customer relationship management (E-CRM) is seen applicatory and beneficial solution to improve customers‟ service, develop a profitable and long term relationship and retain...
The Impact of eCRM on Loyalty and Retention of Customers in Iranian Mobile Telecommunication Sector
, M.Sc. Thesis Sharif University of Technology ; Miremadi, Alireza (Supervisor) ; Amini Lari, Mansour (Co-Advisor)
Abstract
Today, almost all the Iranian mobile telecommunication companies should rely heavily on customer loyalty and customer retention as essential and vital tools to provide a competitive advantage in this competitive telecommunication world by offering value and upper hand service with respect to the existing demand in the Iranian market, hence these determinants arise the need for studying eCRM, Loyalty and Retention in order to achieve customer satisfaction in the Iranian mobile telecommunication field. 400 customers who use the Iranian mobile telecom operators’ services (Hamrah-e Avval, Irancell, and Talia) have been asked as respondents in this research. The study is based mainly on primary...
A Motivational Model for Building Virtual Auction
, M.Sc. Thesis Sharif University of Technology ; Amini Lari, Mansour (Supervisor) ; Beirjandi, Heshmat ($item.subfieldsMap.e)
Abstract
Construction is a large industry in Iran, it engages in a wide range of products. The raw materials which are used in making a building are fairly standard items: iron, cement, glass, and so on. Because the technologies for making a building are well-known, contractor can solicit bids from variety suppliers for raw materials without worrying about the possible disclosure of trade secrets. Unfortunately bidding processing in Iran becomes very slow and inefficient. Each transaction required to request the relevant telephone number to supplier that might be interested in bidding on the item, it would often take purchasing personnel more than one week to gather the information, send it to...
Network-adaptive multipath video delivery over wireless multimedia sensor networks based on packet and path priority scheduling
, Article Proceedings - 2010 International Conference on Broadband, Wireless Computing Communication and Applications, BWCCA 2010, 4 November 2010 through 6 November 2010 ; 2010 , Pages 351-356 ; 9780769542362 (ISBN) ; Akbari, B ; Sharif University of Technology
2010
Abstract
In this paper we investigate multi-path transmission of video over Wireless Multimedia Sensor Networks (WMSNs). Our objective is to provide a transmission mechanism to improve the video quality perceived at the receiver while considering energy, bandwidth and delay constraints of the network. Our approach is based on packet and path priority scheduling in multipath video transmission over WMSN. Video packets are classified according to their types and more important packets are transmitted through paths with better conditions. Path conditions are evaluated by a score mechanism using variant parameters such as free buffer size, energy, hop count and packet loss. Since path conditions are...
Improving Packet Scheduling in Multpath Video Delivery Over Wireless Multimedia Sensor Networks
, M.Sc. Thesis Sharif University of Technology ; Akbari, Behzad (Supervisor)
Abstract
Recent advances in WSN have led to next generation of it for multimedia transmission which is WMSN. WMSN has several applications like environmental monitoring, advance health care delivery and etc. However, providing QoS requirements of transmitting video data like delay, bandwidth and packet loss with minimum distortion at perceived video quality over WMSN with resource constraints is a challenging problem. Using multipath routing protocol for video communication can increase bandwidth and decrease delay over WMSN. Moreover, all video packets have not the same effect on video distortion. We propose a scheduling mechanism which classifies packets according to their types and contents and...
The Impact of Climate Shock on Child Labor
, M.Sc. Thesis Sharif University of Technology ; Keshavarz Haddad, Gholamreza (Supervisor)
Abstract
Precipitation in the water year 1396-1397 is the lowest in the past decade. The present study is conducted during this water year and focuses on the effects of climate variables such as temperature and precipitation on child labor supply between Tir 1397 and Farvardin 1398. Children and household characteristics are also taken into account when evaluating child labor supply using OLS and Logit methods. Estimation results indicate that both child work hours and participation in the job market decline with an increase in precipitation. Furthermore, how much time children spend working or studying is heavily influenced by parents' income. The temperature variable does not have a significant...
Modelling of 2D Fluidized Beds using the DPM Method and Investigation of the Pressure Effect on Particle-Wall Collision Frequency
, M.Sc. Thesis Sharif University of Technology ; Molaei Dehkordi, Asghar (Supervisor)
Abstract
In this work, a comprehensive survey on the different methods of modeling fluidized beds was done. Finally, the discrete particle method with soft particle approach was selected as the method of modeling the solid phase. For the gas phase, computational fluid dynamics (CFD) as the method of modeling is used. In order to verify our simulation results for the solid phase, a simulation of a bed with many particles distributed all around the bed was done. At the first second of the simulation, the gas phase flow was truned off and the particles were falling down. The results obtained with this method were verified with the references. For verification of the gas phase, a 2D bed with the gas...
Successful learning of academic word list via MALL: Mobile assisted language learning
, Article International Education Studies ; Volume 5, Issue 6 , Volume 5, Issue 6 , 2012 , Pages 99-109 ; 19139020 (ISSN) ; Sarab, M. R. A ; Lari, Z ; Sharif University of Technology
2012
Abstract
Mobile phones as new addition to information and communication technologies have created new ways to help learners in the process of foreign language learning. Given the importance of academic vocabularies for university students, this study tried to investigate the effectiveness of SMS on Iranian university students' vocabulary learning and retention. To this end forty five university freshman students with upper intermediate proficiency level were chosen to take part in this study. During 16 weeks of experiment, the participants of the experimental group (N = 28) were taught 320 head words from the Academic Word List (Coxhead, 2000) via SMS. During the same period of time the participants...
Setar Production Modification With Vibration Analysis
, M.Sc. Thesis Sharif University of Technology ; Behzad, Mehdi (Supervisor)
Abstract
Setar is a traditional Persian musical instrument. Nowadays, Setar is one of the most common musical instruments in Persian music. A systematic method for Setar production modification has not been introduced yet. This work is the first scientific work about analysis of this instrument. The aim of this study is to undertake early steps for Setar quality improvement. In this thesis, after analysis of the wood using in Setar construction, numerical and experimental methods have been utilized to analyze this instrument. After that, some works has been performed to extract an objective function which can judge about Setar quality. The results show good agreement between experimental and...
Human Activity Recognition with Spatio Temporal Features in RGB-D Videos
, M.Sc. Thesis Sharif University of Technology ; Jamzad, Mansour (Supervisor)
Abstract
Human activity recognition is an important and useful area in computer vision that application include surveillance systems, patient monitoring systems, human-computer interaction and analyse video data from big websites.Traditional Human action recognition use the RGB videos as default input that unable describe motion and action as full. On the other hand Kinect camera sendsthe RGB data to output in addition to the Depth Data that allows us to extract skeleton of human easily. Recently Space-time features have been particulary popular in RGB Videos because of their structure. These features are describedby their descriptor and send the good and important information to output.Finally we...
Automatic Image Annotation Using Deep Learning
, M.Sc. Thesis Sharif University of Technology ; Jamzad, Mansour (Supervisor)
Abstract
With the advances in technology, Nowadays digital cameras are everywhere. As a result very large amount of images are on the web. Searching through these images intelligently and purposively is an essential need. Recently the possibility of retrieving images with some conceptual words along side of content based image retrieval has been studied in computer vision. For this purpose it’s required that for each image several words that describe its content be assigned automatically. One of the main problems for this task is semantic gap, meaning that the low level features such as color, texture,… don’t have the ability to describe the high level concepts in images which are comprehensible by...
An experimental study to find the acoustic quality indicators of mulberry wood
, Article ASME International Mechanical Engineering Congress and Exposition, Proceedings (IMECE), 12 November 2010 through 18 November 2010, Vancouver, BC ; Volume 13 , 2010 , Pages 43-47 ; 9780791844502 (ISBN) ; Behzad, M ; Sharif University of Technology
2010
Abstract
Morus Alba or mulberry is a wood species that is broadly used in making musical instruments in Eastern countries. However, the mechanical and acoustical properties of this type of wood are not investigated properly. In this study a set of features, previously examined for other species, are applied to this wood and its acoustic quality is evaluated. Setar, a Persian musical instrument made of mulberry wood, is selected as the test case of this experiment. Different samples of wood are gathered and categorized based on their appropriateness for Setar construction. The quality of each sample is identified based on the Perceptual knowledge of professional Setar makers. The most effective...
Automatic Skin Cancer (Melanoma) Detection Using Visual Features
, M.Sc. Thesis Sharif University of Technology ; Jamzad, Mansour (Supervisor)
Abstract
Melanoma is a malignant skin cancer which is caused by cancerous growth of melanocytes. If not treated at its early development stages, melanoma is the deadliest form of cancer. The best way to cure melanoma is to treat it in its earliest stage of development. Since a melanoma leasion is similar to benign moles (regaring its shape and appearance) at its early stages of development, it is often mistaken for moles and left untreated. Therefore, automatic melanoma detection can increase the survival rate of patients by detecting melanoma in its early stages. In this thesis, a new method for automatic diagnosis of melanoma using segmented dermoscopic images is provided. Almost all related...
Assessment of message missing failures in FlexRay-based networks
, Article 13th Pacific Rim International Symposium on Dependable Computing, PRDC 2007, Melbourne, VIC, 17 December 2007 through 19 December 2007 ; 2007 , Pages 191-194 ; 0769530540 (ISBN); 9780769530543 (ISBN) ; Dehbashi, M ; Miremadi, S. G ; Farazmand, N ; Sharif University of Technology
2007
Abstract
This paper assesses message missing failures in a FlexRay-based network. The assessment is based on about 35680 bit-flip fault injections inside different parts of the FlexRay communication controller; the parts are: controller host interface, protocol operation control, coding and decoding unit, media access control and clock synchronization process. To do this, a FlexRay communication controller is modeled by Verilog HDL at the behavioral level. This HDL model of the controller is exploited to setup a FlexRay-based network composed of four nodes. The results of fault injection show that about 35% of faults led to the message missing failures. The controller host interface and the clock...
Evaluation of babbling idiot failures in FlexRay-based networkes
, Article IFAC Proceedings Volumes (IFAC-PapersOnline) ; Volume 7, Issue PART 1 , 2007 , Pages 399-406 ; 14746670 (ISSN); 9783902661340 (ISBN) ; Dehbashi, M ; Miremadi, S. G ; Amiri, M ; Sharif University of Technology
IFAC Secretariat
2007
Abstract
This paper evaluates the error propagation and its effects in babbling idiot failure in a FlexRay-based network. The evaluation is based on about 35680 bit-flip fault injections inside different parts of the FlexRay communication controller. To do this, a FlexRay communication controller is modeled by Verilog HDL at the behavioral level. Then, this controller is exploited to setup a FlexRay-based network composed of four nodes. Nodes in this experiment are considered in two forms: 1) node without bus guardian, 2) node with bus guardian. The results of fault injection show that in first form about 4.57% of faults lead to the babbling idiot failures. Also in second form about 0.75% faults lead...
Improving Watermarking Robustness Against Print and Scan Attack
, M.Sc. Thesis Sharif University of Technology ; Jamzad, Mansour (Supervisor)
Abstract
The advent of digital age with the Internet revolution has made it extremely convenient for users to access, create, process, copy, or exchange multimedia data. This has created an urgent need for protecting intellectual property in both the digital and the print media. Digital watermarking is a suitable way to do this. In this technology, some hidden information called watermark are embedded into host signal and extracted to confirm copyright protection. However, the watermark should be embedded in the host in such a way that the attacks could not destroy it. Print and scan is a popular attack that is applied on digital images. This attack has complex nature and can be implemented easily....
Improving the Embedding Capacity of Steganography Methods
, Ph.D. Dissertation Sharif University of Technology ; Jamzad, Mansour (Supervisor)
Abstract
Providing security for digital information in a communication channel is a challenge in the recent years. This is due to the strength of high-speed processing resources that can threaten the security and correctness of communicating information. Using steganography method, the secret information can be hidden in an innocent media that does not attract the attention of third parties. This research discusses about steganography in images. The main goal of this research is presenting a universal steganography scheme with high steganography capacity. Using this scheme the steganographer can embed every large secret data in images securely. The reasons for selecting the subject of “Improving...
Tamper Detection in Digital Images Using Transform Domains
,
M.Sc. Thesis
Sharif University of Technology
;
Jamzad, Mansour
(Supervisor)
Abstract
Nowadays, digital images are easy to manipulate and edit due to availability of powerful image processing and editing software. It is possible to add or remove important features to the image without leaving any obvious traces of tampering. Therefore, proving the authenticity and integrity of digital media becomes increasingly important. In this study, we focus on detection of a special type of digital forgery, the copy-move attack, in which a part of the image is copied and pasted somewhere else in the image with the intent to cover an important image features or to add some fake feature. In this way we propose some novel methods that work in spatial domain, Discrete Cosine domain and...
Improving the Robustness of Image Watermarking for Publicly Copyright-Proving
, M.Sc. Thesis Sharif University of Technology ; Jamzad, Mansour (Supervisor)
Abstract
The advent of Internet and advancement of computer technologies have enabled convenient and fast exchange of multimedia so the illegal reproduction and modification of digital media has become increasingly serious. Hence, how to protect the intellectual property rights of digital multimedia is an imperative issue. Digital watermarking is one of the solutions to prevent unauthorized use of images. Traditional digital watermarking techniques embed a watermark such as logo, trademark, or copyright information into a host image so that it is not perceptible. These techniques, depending on the amount of embedded data, will distort the content of host image which results in quality degradation of...
A Hybrid Method for Improving the Color Constancy in Images
, M.Sc. Thesis Sharif University of Technology ; Jamzad, Mansour (Supervisor)
Abstract
The ability of measuring colors of objects, independent of light source illumination, is called color constancy which is an important field in machine vision and image processing. In this thesis, we propose five new combinantional ways in color constansy fields. The first two proposed methods use neural networks to combining basic methods. The third and forth proposed methods use fuzzy measures and integrals for combining color constancy methods. And finally fifth method combines methods with indoor outdoor classification this method has the best result (3.01 median angular error) in proposed methods and past methods in color constancy fields. It is shown in this article that the proposed...