Tuning of PID controller by bioinspired techniques

PID controllers have been extensively used for a long time for the purpose of process controls.Efficient methods for tuning of PID controllers is still a challange to designers. This project work is based on the development of PID controller for a low damping plant using Bio inspired evolutionary soft computational techniques.We have implemented Particle Swarm Optimization and Bacterial Foraging Optimization techniques to tune the parameters of the PID for a fifth order low damping plant and have done a comparative study of the performance of both the techniques

A novel group signature scheme without one way hash

The group signatures scheme was introduced by Chaum and van Heijst which allow members of a group to sign messages anonymously on behalf of the whole group. Only a designated Group Manager is able to trace the identify of the group member who issued a valid signature. The group members sign a message with their secret key gsk and produce a signature that cannot be linked to the identities of the signers without the secret key of the manager. The group manager can open the signature to recover the identities of the signers in case of any legal dispute. Group signatures have been widely used in Electronic markets where the sellers are the group members, the buyers are the veriers and the market administrator is the group manager. We aim to propose a group signature scheme that is devoid of any one-way hash function and is based upon the Integer Factorization Problem (IFP). The scheme uses the concept of safe primes to further enhance the security of the scheme. The scheme supports message recovery and hence the overload of sending the message is avoided. The scheme satisfies security properties such as Anonymity (The verier cannot link a signature to the identity of the signer), Traceability (The Group Manager can trace the identity of the signer of any valid signature), Unforgeability (A valid signature cannot be produced without the group secret keys), Exculpability (Neither the GM nor any member can produce a signature on behalf of a group member)

High payload digital image steganography using mixed edge detection mechanism

The Least Significant Bit(LSB) is a spatial domain embedding technique suggest that data can be hidden in the least significant bits of the cover image and the human visual system(HVS) not able to find the secret data in the cover image. It is most powerful and easily understood method in spatial domain. LSB is widely used stegonagraphy technique in both spatial and frequency domain because all other methods in frequency domain are complex to understand and implement. In this thesis, along with using the LSB substitution method as a important stage, edge detection mechanism is used to take advantage for high payload, as edges are sharp areas of an image. In the proposed scheme, mixed edge detection mechanism is employed to achieve high payload steganography. Here, mixed edge detection mechanism is combination of Canny edge detection and Log edge detection techniques. Then applying the embedding algorithm, heavy amount data are stored in the cover image i.e high payload is achieved. Experimental results show that the steganography using mixed or hybrid edge detection mechanism accomplished with better peak signal to noise ratio(PSNR), compare to other steganograpgic model, for the same number of bits per pixel in embedded image

Study on Mechanical Properties and Fracture Behavior of Chopped Fiber Reinforced Self-Compacting Concrete

The growth of Self Compacting Concrete is revolutionary landmark in the history of construction industry resulting in predominant usage of SCC worldwide nowadays. It has many advantages over normal concrete in terms of enhancement in productivity, reduction in labor and overall cost, excellent finished product with excellent mechanical response and durability. Incorporation of fibers further enhances its properties specially related to post crack behavior of SCC. Hence the aim of the present work is to make a comparative study of mechanical pr operties of selfconsolidating concrete, reinforced with different types of fibers. The variables involve in the study are type and different percentage of fibers. The basic properties of fresh SCC and mechanical properties, toughness, fracture energy and sorptivity were studied. Microstructure study of various mixes is done through scanning electron microscope to study the hydrated structure and bond development between fiber and mix. The fibers used in the study are 12 mm long chopped glass fiber, carbon fiber and basalt fiber. The volume fraction of fiber taken are 0.0%,0.1%,0.15%,0.2%,0.25% ,0.3%. The project comprised of two stages. First stage consisted of development of SCC mix design of M30 grade and in the second stage, different fibers like Glass, basalt and carbon Fibers are added to the SCC mixes and their fresh and hardened properties were determined and compared. The study showed remarkable improvements in all properties of self-compacting concrete by adding fibers of different types and volume fractions. Carbon FRSCC exhibited best performance followed by basalt FRSCC and glass FRSCC in hardened state whereas poorest in fresh state owing to its high water absorption. Glass FRSCC exhibited best performance in fresh state. The present study concludes that in terms of overall performances, optimum dosage and cost Basalt Fiber is the best option in improving overall quality of self-compacting concrete

A Study on Mechanical Properties and Fracture Behavior of Chopped Fiber Reinforced Self-Compacting Concrete

The growth of Self Compacting Concrete is revolutionary landmark in the history of construction industry resulting in predominant usage of SCC worldwide nowadays. It has many advantages over normal concrete in terms of enhancement in productivity, reduction in labor and overall cost, excellent finished product with excellent mechanical response and durability. Incorporation of fibers further enhances its properties specially related to post crack behavior of SCC. Hence the aim of the present work is to make a comparative study of mechanical properties of selfconsolidating concrete, reinforced with different types of fibers. The variables involve in the study are type and different percentage of fibers. The basic properties of fresh SCC and mechanical properties, toughness, fracture energy and sorptivity were studied. Microstructure study of various mixes is done through scanning electron microscope to study the hydrated structure and bond development between fiber and mix. The fibers used in the study are 12 mm long chopped glass fiber, carbon fiber and basalt fiber. The volume fraction of fiber taken are 0.0%,0.1%,0.15%,0.2%,0.25% ,0.3%. The project comprised of two stages. First stage consisted of development of SCC mix design of M30 grade and in the second stage, different fibers like Glass, basalt and carbon Fibers are added to the SCC mixes and their fresh and hardened properties were determined and compared. The study showed remarkable improvements in all properties of self-compacting concrete by adding fibers of different types and volume fractions. Carbon FRSCC exhibited best performance followed by basalt FRSCC and glass FRSCC in hardened state whereas poorest in fresh state owing to its high water absorption. Glass FRSCC exhibited best performance in fresh state. The present study concludes that in terms of overall performances, optimum dosage and cost Basalt Fiber is the best option in improving overall quality of self-compacting concrete

Classification of internet Advertisement

The investigation of web ad is vital now daily in human existence. Commercial and their connected regions are economy concern business has become an outstanding field in the wide spread region. Publicizing area are producing part of data and information which help to comprehend and should be examination, propositions information are should change over into significant information. To utilize these clients\u27 data, settle on future choice and accomplish powerful choices, these choices help to comprehend client\u27s need and utilization of the labour and products. Utilize client\u27s information and carry out information mining strategies to get familiar with clients\u27 examples and discover answer for conquer the market prerequisite. There is a shortfall of appropriate looking at instrument according to outfit convincing business sector overview results along with the concealed information, so and such a system is made using data burrowing computations for describing the data and to perceive the clients necessity. In promoting issues information mining give arrangement. For web promoting there are 5 calculations which help to discover examples and arrangement these are Random Forest, Tree, KNN, Constant and Naïve Bayes calculation which help to finding client issues. In this examination paper I am utilizing information mining apparatus Orange and breaks down boundaries and discover client\u27s prerequisite through web promotion as for the information mining draws near

INVESTIGATION ON CYLINDRICAL GATE ALL AROUND (GAA) TO NANOWIRE MOSFET FOR CIRCUIT APPLICATION

Undoped cylindrical gate all around (GAA) MOSFET is a radical invention and a potential candidate to replace conventional MOSFET, as it introduces new direction for transistor scaling. In this work, the sensitivity of process parameters like channel length (Lg), channel thickness (tSi), and gate work function (φM) on various performance metrics of an undoped cylindrical GAA to nanowire MOSFET are systematically analyzed. The electrical characteristics such as on current (Ion), subthreshold leakage current (Ioff), threshold voltage (Vth) and similarly analog/RF performances like transconductance (gm), total gate capacitance (Cgg), and cut-off frequency (fT) are evaluated and studied with the variation of device design parameters. The discussion give direction towards low standby operating power (LSTP) devices as improvement in Ioff is approaching 90% in nanowire MOSFET. All the device performances of undoped GAA MOSFET are investigated through Sentaurus device simulator from Synopsis Inc

Аналіз продуктивності GAA MOSFET при кріогенній температурі для субнанометрового режиму

У роботі розглядається GAA MOSFET n-типу з різними довжинами затвора від 90 до 12 нм. Температурно-залежне моделювання проводиться з метою детального дослідження електричних характеристик. Діапазон температур, використаний у роботі, варіюється від 6 до 700 К, включаючи кріогенну температуру, і досліджується поведінка GAA MOSFET як напівпровідникового пристрою наступного покоління для квантових обчислювальних систем. Реалізація апаратного квантового процесора потребує інтеграції CMOS-контролера та схеми інтерфейсу зчитування, яка працюватиме при кріогенній температурі (6 К). У роботі досліджується критична поведінка струму стоку при кріогенній температурі та при нормальній кімнатній температурі. Проводиться порівняльний аналіз для вивчення впливу температури на продуктивність приладу. Запропонований пристрій при кріогенній температурі може працювати належним чином і стати передовим пристроєм для майбутніх квантових обчислювальних систем.In this work, an n-type gate all around (GAA) MOSFET with various gate lengths from 90 to 12 nm is considered for simulation. The temperature dependent simulation is carried out in order to investigate the electrical characteristics extensively. The temperature range used in this work varies from 6 to 700 K, including cryogenic temperature, and the behavior of the GAA MOSFET as a next generation semiconductor device for quantum computing systems is investigated. The implementation of a hardware-based quantum processor needs the integration of a CMOS controller and read-out interface circuit that will operate at cryogenic temperature (6 K). In this work, we investigate the critical behavior of the drain current at cryogenic temperature and normal room temperature. А comparative analysis is carried out to study the effect of temperature on the device performance. Тhe proposed device at cryogenic temperature can work properly and become a promising device for future quantum computing systems

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