Based On Campus Network User Behavior Data Acquisition and Processing
Liu Xiang wei, Ma-Xin
Sch J Eng Tech | 718-723
DOI : 10.36347/sjet
Abstract
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This thesis analyzes the behavioral characteristics of network users on the campus network. After capturing
and processing communication data and recovering sessions, we can know the group behaviors of the campus users.
What’s more, the use of the diskless computer among the cadets can also be seen from this analysis. On the one hand,
such analysis can offer the theoretical basis for campus network. On the other hand, this work can help the administrative
know more about the cadets’ study situation on the campus network and make better management. To some degree, the
analysis reflects the importance of network users’ behavior analysis network management.
A Neural Network Controller with Anti Windup Based Shunt Active Power Filter for Harmonic Mitigation
Angayarkanni S, Vanitha U
Sch J Eng Tech | 724-731
DOI : 10.36347/sjet
Abstract
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Power quality problem is the most sensitive problem in a power system. The objective of this paper is to
reduce “harmonics” using a compensation technique. Shunt Active Power Filter (SAPF) is used to eliminate harmonic
current and to compensate reactive power for a three phase four wire unbalanced system. Here, a PI controller, Fuzzy
Logic and Artificial Neural Network based Controller are employed to maintain DC bus voltage. The advantage of fuzzy
control is that it provides linguistic values such as low, medium, high that are useful in case where the probability of the
event to occur is needed. The implementation of Artificial Intelligence as controller is that it does not require an accurate
mathematical model of the system. A MATLAB/SIMULINK has been used to perform the simulation. Simulink model
is developed for three phase four wire system under balanced supply and unbalanced supply condition. The
performance of PI, Fuzzy Logic ANN based controller is measured and their results are compared. Simulation results
obtained shows that the performance of neural network based controller is found to be better than PI controller and Fuzzy
Logic Controller. Anti-windup circuit is added with the PI controller in addition to reduce peak overshoot of DC link
overshoot so that steady state is obtained soon.
Rectangular group congruences on an epigroup
Yingqin Jin
Sch J Eng Tech | 732-736
DOI : 10.36347/sjet
Abstract
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An epigroup is a semigroup in which some power of any element lies in a sub-group of the given semigroup.
The rectangular group congruences on an epigroup are investigated. A characterization of rectangular group congruences
on an epigroup in terms of its rectangular group congruence pairs is given. Moreover, it is proved that the rectangular
group congruence on an epigroup is uniquely determined by its kernel and hyper-trace.
Mechanical Spider Using Klann Mechanism
U.Vanitha, V. Premalatha, M. NithinKumar, S. Vijayaganapathy
Sch J Eng Tech | 737-740
DOI : 10.36347/sjet
Abstract
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Since the wheel was invented back in the Stone Age, it was the primary component used in all forms of
mechanical transportation. Even today it is the component of choice for almost any type of moving machine like cars.
However, the wheel has always had a major disadvantage with short instant elevation changes like stairs. For most uses,
climbing stairs or steep jagged rock piles is not a problem which is why the wheel is still almost always used. For the
other applications, people looked at animal and human legs which are already proven to work effectively on this type of
terrain. The two most effective leg mechanisms are currently Joe Klann’s mechanism which resembles a spider leg and
Theo Jansen’s mechanism which resembles a human leg. We have chosen Joe Klann mechanism which has more
advantage than Jansen mechanism. The main objective of our paper is to replace the function of wheel with an alternative
in order to overcome the difficulty of travelling in uneven terrain. This paper is useful in hazardous material handling,
clearing minefields or secures an area without putting anyone at risk.
Adsorption Kinetics and Thermodynamics Study for the Removal of Anionic Dye Eosin-B From Aqueous Solution by Anion Exchange Membrane: Adsorption Kinetics and Thermodynamics
Muhammad Imran Khan, Muhammad Ali Khan, Shagufta Zafar, SaminaAhmad Hussain
Sch J Eng Tech | 741-749
DOI : 10.36347/sjet
Abstract
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Batch adsorption of anionic dye Eosin-B (EB) from aqueous solution on anion exchange membrane (EBTAC)
has been studied at ambient temperature. The influence of contact time, membrane dosage, ionic strength and
temperature on the adsorption of dye from aqueous solution were investigated. Kinetic models such as pseudo-first-order,
pseudo-second-order, Elovich model, liquid film diffusion model, modified Freundlich equation and Bangham equation
were used to evaluate the experimental data.Endowments such as adsorption capacities, rate constant and related
correlation coefficients for every model were measured and discussed.Thermodynamic characteristics illustrated that
adsorptionof EB on EBTAC followed pseudo-second-order kinetics.Moreover, change in Gibbs free energy (∆G°), EB on
EBTAC revealed that the adsorption of EB dye on EBTAC is an exothermic process.