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    Fuzzy-Based Routing in Irregular Mesh Noc

    , M.Sc. Thesis Sharif University of Technology Rezaei Mayahi Nejad, Mehdi (Author) ; Sarbazi Azad, Hamid (Supervisor)
    Abstract
    In past decades, we have seen the rise of integration density in chips making it possible to design a whole system on a single chip. The previously designed interconnection architectures for multiprocessors systems cannot directly be applied in on-chip systems (especially when the number of processor elements increases) since they require a different type of a cost-performance trade-off. This is why the interconnection networks of systems-on-chip (SoC) are such a problem. Network-on-chip (NoC) was being proposed as a scalable and reusable communication platform for SoCs, which makes use of the network model to develop efficient on-chip communication infrastructures. The NoC has a layered and... 

    Nonlinear Modelling of Return and Volatility in IRANs Auto Industry

    , M.Sc. Thesis Sharif University of Technology Ebrahimi, Bababk (Author) ; Keshavarz Hadad, Golam Reza (Supervisor)
    Abstract
    Long memory in assets return is important on the theoretical as well as the practical aspects and since it is a special form of nonlinear dynamics, in this study an ARFIMA model was used with the aim of considering the long memory in the return conditional average of automobile industry index. Then, due to the observation of ARCH effects, the simultaneous conditional average modeling and turbulences in the automotive industry index return using an ARFIMA-FIGARCH model was considered in the residuals of the best fitted model and results were that for modeling the returns and turbulences of automobile industry stocks which has a special long memory, FIGARCH will provide better and more... 

    A Spatial Locality-based Block Replacement Algoritghm in Cache Memories

    , M.Sc. Thesis Sharif University of Technology Ardalani, Newsha (Author) ; Sarbazi-Azad, Hamid (Supervisor)
    Abstract
    From the programmer’s point of view, main memory allocation to a program is contigious, however this is non-contigious and the program is scattered in physical memory here and there. Assuming main memory partitioned into regions, each program accesses in its life time different regions which are not necessariliy close and occupy different percentages of the cache capacity. Considering what the replacement policy is chosen, the cache would be partitioned differently among regions, e.g., the commonly used LRU policy partitions the cache among regions on a demand basis, giving the more cache resource to regions whose miss ratio is higher, which is not necessarily optimal. In this thesis, we... 

    Performance Evaluation of Deadlock Avoidance Based Routing Algorithms in Irregular Mesh NoCs

    , M.Sc. Thesis Sharif University of Technology Mahdavinia, Parisa (Author) ; Sarbazi Azad, Hamid (Supervisor)
    Abstract
    It is now possible to integrate hundreds of modules (e.g. processors, memories) in a single silicon die. Handling the communication requirements between such modules by interconnecting them using shared buses is not possible from the performance point of view. One of the solutions is to use a network-on-chip (NoC) based communication infrastructure. NoCs were shown to be effective for solving the global interconnection problem among modules. These architectures emphasize the separation between computing and communication, and guarantee a good degree of design reuse and scalability. Mesh topology is favored by many researchers as the topology of NoCs because of its layout efficiency.... 

    Design Switching Power Amplifiers for UHF RFID Reader

    , M.Sc. Thesis Sharif University of Technology Talebi Amiri, Omid (Author) ; Sharif Bakhtiar, Mehrdad (Supervisor)
    Abstract
    There is a strong drive toward handheld communication devices with building blocks that are fully integrated in standard CMOS technologies. Although there are obvious cost, size, and repeatability advantages, it is particularly challenging to implement fully integrated power amplifiers with no external matching in standard CMOS under the large supply variations and harsh load mismatches present in handheld devices. This Project deals with the front-end of an Integrated RFID Reader for the UHF band. The bottleneck of the design is the design of a fully on-chip Power Amplifier. In this thesis, a new method is introduced to increase transistors breakdown voltage in a class E power amplifier.... 

    Reducing Power Consumption in NoCs Through Adaptive Data Encoding

    , M.Sc. Thesis Sharif University of Technology Taassori, Meysam (Author) ; Hessabi, Shahin (Supervisor)
    Abstract
    Recent advances in VLSI technology have led to integrate a few billion transistors on a chip. Systems on Chip provide solutions to the design problems of these systems. As technology scales down to deep sub-micron dimensions, the delay and power consumption of global interconnects become the major bottleneck in SoC design. Networks on Chip (NoCs) have been proposed as an efficient, scalable, modular and reliable solution to provide on chip communication in large VLSI design. The market trend to mobile digital systems and battery-powered devices add power as a new dimension to VLSI design space in addition to speed and area. Interconnect wires dissipate a significant fraction of power... 

    Return Predictability and Volatility, and Spillovers of Indexes Using a Multivariate Dynamic Model in Tehran Stock Exchange

    , M.Sc. Thesis Sharif University of Technology Sanaei Alam, Mohsen (Author) ; Zamani, Shiva (Supervisor) ; Souri, Davood (Supervisor)
    Abstract
    Stock exchanges are one of the most important capital markets and let people and institutions to insvest their savings in stocks and therefore earn money. Investors are going to select a portfolio that has the maximum return and minimum risk; so, they try to forecast stock returns and volatilities. Predictability of stock return and volatility is also important for asset pricing and investigating market efficiency. Now, the question is “are stock returns and volatilities predictable using historical returns and volatilities?” In this research, return and volatility predictability of Tehran Stock Exchange indexes by using historical data are investigated. First, the outocorrelation of return... 

    Using of Exhaust Gas from Gas Turbine for Conservation of Energy Consumption

    , M.Sc. Thesis Sharif University of Technology Ghanbari, Mahdi (Author) ; Nouri, Ali (Supervisor)
    Abstract
    Nowadays, the use of gas turbines with low capacity have acceptance in large quantity. This type of gas turbines with a capacity of approximately 5-200kW are known as microturbines. This type of turbines due to the existence of limitations on increasing of turbine inlet temperature and compressor pressure ratio has low efficiency compared to the turbine with high capacity. Therefore the use of a recuperator in the cycle is necessary. Optimum design of heat recuperator has important effect on improving of gas turbine cycle efficiency. In this project for optimum design of heat recuperator, the effect of recuperator on gas turbine cycle efficiency is studied. By determining geometric... 

    Innovative Team Climate, Teamwork Quality and Team Performance in Software Development Teams

    , M.Sc. Thesis Sharif University of Technology Kazemi, Mehdi (Author) ; Kermanshah, Ali (Supervisor)
    Abstract
    In this dissertation, our aim is to evaluate a model linking “Teamwork Quality” and “Innovative Team Climate”. Teamwork Quality is defined as the quality of interactions among team members that includes six dimensions: “Communication”, “Coordination”, “Balance of Contribution”, “Mutual Support”, “Effort”, and “Cohesion”. Innovative Team Climate refers to shared perceptions of team policies, practices and procedures in support of innovation. This construct is composed of four dimensions: “Vision”, “Participation Safety”, “Task Orientation”, and “Support of Innovation”. Firstly, we hypothesized that there are positive relations between Innovative Team Climate and Teamwork Quality itself and... 

    Newton's Method for Vector Optimization

    , M.Sc. Thesis Sharif University of Technology Jalalian, Saeideh (Author) ; Razvan, Mohammad Reza (Supervisor) ; Khorram, Esmaeil (Supervisor)

    Evaluation of Dea Models for the Out puts,Inputs Estimation and Improvement Organizational Performance

    , M.Sc. Thesis Sharif University of Technology Hamed Ranjkesh, Somayyeh (Author) ; Kianfar, Farhad (Supervisor)
    Abstract
    Measurement of efficiency is a significant issue in organizations which is used to improvement efficiency and performance .one of the serious offaires in any country, is banking, inefficiency in which leads to problems and obstacles in developing capital market. In this research, Data Envelopment Analysis models are used to estimate the extent of performance in decision making units (DMU’s) to improve inefficient ones. We change the inputs ( outputs) to a special unit at both the constancy or improvement of efficiency using the DEA models, we estimate the values of output ( input ) levels. Howeve, we assume the data of (the values of input ( output ) levels ) can be either crisp or interval.... 

    Effects of Weighting and Root Matrices on LQG Compensators

    , M.Sc. Thesis Sharif University of Technology Safa, Alireza (Author) ; Mobed, Mohammad (Supervisor)
    Abstract
    The LQG theory made its appearance in the fifties and sixties. It has now become one of the standard methods for compensator design. Despite the existing powerful tools in modern control, there seems to be few or no systematic approaches proposed for determining the weighting and root matrices which are the free parameters of the compensator. These matrices are often found by trial-and-error. Initially, this thesis presents an iterative algorithm for determining the compensator parameters. The algorithm is based upon making corrections to the singular values graphs in order to enhance closed-loop performance and robustness. This is how the traditional intuitive trial-and-error approach is... 

    Improving the Performance and Power Consumption of on-Chip Network Using Hybrid Switching

    , M.Sc. Thesis Sharif University of Technology Teimouri, Nasibeh (Author) ; Sarbazi Azad, Hamid (Supervisor)
    Abstract
    Switching as one of important characteristics of on-chip network affects on power consumption and performance. In general there are two switching methods as circuit-switching and packet-switching. Hybrid switching includes both switching to have both resource utilization and scalability of packet switching and low power consumption and improved latency of circuit switching. Also topology is another network attribute that greatly affects the power, performance, cost, and design time/effort of NoCs. In this thesis, we propose a novel NoC architecture which holds both fixed connections between adjacent nodes and long connections virtually connecting non-adjacent nodes. Our proposed NoC... 

    Investigation of Group Pile Behavior under Lateral Loads in Clayey Soils

    , M.Sc. Thesis Sharif University of Technology Koohsari, Ali (Author) ; Pak, Ali (Supervisor)
    Abstract
    Piles are usually used in groups. The complicated interaction between piles on the one hand and between piles and their surrounding soil on the other hand, have made it difficult to recognize mechanisms that influence the pile group behavior and analyze it accurately. In this research, three dimensional models in ABAQUS software were used to investigate response of single piles and pile groups under lateral loading in clayey soils. Configuration of piles in a group, connection of piles to the pile cap, pile spacings, and pile cross section were taken into consideration as some important factors affecting response of pile groups. All the modeled piles were categorized as long piles. In order... 

    Supporting Non-Contiguouse Processor Allocation in Mesh-based CMPs

    , M.Sc. Thesis Sharif University of Technology Asadinia, Marjan (Author) ; Sarbazi-Azad, Hamid (Supervisor)
    Abstract
    In this thesis, we propose a processor allocation mechanism for run-time assignment of a set of communicating tasks of input applications onto the processing nodes of a Chip Multiprocessor (CMP), when the arrival order and execution life-time of the input applications are not known a priori. This mechanism targets the on-chip communication and aims to reduce the power and latency of the Network-on-Chip (NoC). In this work, we benefit from the advantages of non-contiguous processor allocation mechanisms, by allowing the tasks of the input application to be mapped onto disjoint regions (sub-meshes) and then virtually connecting them by bypassing the router pipeline stages of inter-region... 

    Implementation of Productivity Management Cycle and Case Study in Radiator-e-Iran company

    , M.Sc. Thesis Sharif University of Technology Kanani Maman, Ali (Author) ; Eshraghniaye Jahromi, Abdolhamid (Supervisor)
    Abstract
    Productivity is the effective usage of input or resources for production or output. Input (including Energy, raw materials, capital and work force), which is being used for output (including final products or services performed by an organization). Productivity, increases gross domestic product and competitiveness, and improves level of living. Firms and related management levels play the main role in improving productivity. Using productivity cycle management brings the productivity to improve as a permanent process, specifies the rout for productivity and prepares the ground. The most important step in productivity cycle (PDCA) is the measurement of productivity. In this research several... 

    Measurement of the B-Tagging Efficiency in the CMS Experiment with the First LHC Collisions

    , Ph.D. Dissertation Sharif University of Technology Jafari, Abideh (Author) ; Ardalan, Farhad (Supervisor)
    Abstract
    Jets originating from bottom (b) quarks, play an important role in the study of Standard Model processes together with the search for new physics. In the CMS experiment a considerable e?ort is dedicated to the development and the performance study of so-called b-tagging algorithms. On the other hand, the top quark which is produced in pair (tt¯) with a high rate at the LHC, decays near 99% of the time to a b-quark. Hence it provides a rich source of b-quark jets, suitable for b-jet identi?cation studies. In this thesis, a fully data-driven method to measure the b-tagging e?ciency, using top quark events in its semi-electron ?nal state, is developed. The results of the application of the... 

    Segmented Reconfigurable Bus for SoCs

    , M.Sc. Thesis Sharif University of Technology Shahidi, Narges (Author) ; Sarbazi Azad, Hamid (Supervisor)
    Abstract
    Advance in VLSI integration level has realized multi-core system-on-chip. For inter-IP communication on-chip network is proposed as a substitute for simple interconnects such as bus fabrics and expensive point-to-point links. Although onchip networks have some superiorities over simple interconnects, but they need more of real estate resource. Although buses are not scalable, they are still popular for their simple communication mechanism. There are so many proposed mechanisms to make buses more scalable and more popular. Most of them try to change bus structure by segmenting and using reconfigurable methods. In this thesis, we explore buses delay by considering the number of component in a... 

    Robotic Modeling of Paraplegic Locomotion to Improve the Gait Efficiency Using Modified Motion Pattern and Orthotics Design

    , M.Sc. Thesis Sharif University of Technology Abdolshah, Saeed (Author) ; Farahmand, Farzam (Supervisor)
    Abstract
    Walking on legs using orthosis for spinal cord injury patients has many advantages and decreases the physiological and psychological problems comparing with wheelchair application, however high energy consumption and early exhaustion of patients are disadvantages of orthosis usage. The most important group of orthosis for spinal cord injury patients is RGO (Reciprocating Gait Orhtosis) which a reciprocating cable mechanism links two hip joints motion. So swinging of mobile leg gets easier and stability of patient in standing and walking step increases. Regarding to existent reports about high energy consumption in walking by orthosis, this project has been fulfilled to design an improved... 

    A Method for Evaluation of Effecticeness and Efficiency of Grammar Based Criteria

    , M.Sc. Thesis Sharif University of Technology Monemi Bidgoli, Atieh (Author) ; Mirian Hoseinabadi, Hasan (Supervisor)
    Abstract
    Grammar-based software's are the software's that their input can be expressed according to the grammars for example, reverse engineering software's, evolutional counting's, adjustable programming in product line and XML controllers are in this category; so we can use this capability of the software in its testing .In the field of criteria for the test coverage of the grammar-based software, 5 criteria have been offere so far, which contain rule coverage criterion, context-dependant rule coverage criterion, length-n successor coverage criterion, loop-K coverage criterion and full coverage criterian, any of which have benefits and defeats. The first questions which are asked in this field is...