Computer Engineering

This paper presents an efficient cryptographic algorithm based on the mathematical functions that determine the important properties of the numbers. The conversion of characters to numbers makes this algorithm more secure. The other features of this algorithm include the lesser time that it takes to execute the encryption and the decryption. Also, the dynamic nature of the key makes this algorithm invulnerable to attacks.

Providing better Internet services to users’ becomes a challenge to researchers’ and Internet Service Provider (ISP). The Quality of Service (QoS) may be improved by using web caching at server level. Web caching catch the frequently requested web objects into the memory of server. The memory is limited in size. Therefore web object replacement policy, which selects the web objects to be replaced from memory play an important role in web caching. In this paper web objects are selected on the basis of client Out-degree, server In-degree and frequency of URLs’ by using directed graph method between clients and servers. An experiment is performed on the real access.log file data of proxy server of central computing facility of the University. The results of experiment are satisfactory, which improve the QoS and best utilize the memory.

The proposed FXLMS techniques have been modeled using Verilog HDL; the models have been verified using test benches with a functional coverage of 95%. The results obtained have been compared with MATLAB results, which are considered to be a benchmark. The HDL (Hardware Description Language) code is synthesized using Synopsys Design Compiler targeting 130-nanometer TSMC (Taiwan Semiconductor Manufacturing Company) library and target technology. The synthesized netlist obtained for all the adaptive filtering techniques proposed in this research work is taken through physical design flow consisting of Floor planning. Placement and Routing steps. The results obtained at each step are simulated for the functionality. The final GDSII (Graphical Design Standard II) file is generated for the proposed techniques. The floor planning, placement and routing of the netlist ensures that the overall size for the entire chip does not exceed by 2.15 Square millimeters. The results obtained for NLMS adaptive filtering techniques using pipelining, parallel processing, low power techniques and floating point architectures have proven that the complexities in the industrial applications can be met if the design is implemented on ASIC.

The proposed Adjoint LMS (ALMS) techniques have been modeled using Verilog HDL. The model has been verified using test benches with a functional coverage of 95%. The results obtained has been compared with MATLAB results, which are considered to be a benchmark. The HDL (Hardware Description Language) code is synthesized using Synopsys Design Compiler targeting 130-nanometer TSMC (Taiwan Semiconductor Manufacturing Company) library and target technology. The synthesized netlist obtained for all the adaptive filtering techniques proposed in this research work is taken through physical design flow consisting of Floorplanning Placement and Routing steps. The results obtained at each step are simulated for the functionality. The final GDSII (Graphical Design Standard II) file is generated for the proposed techniques.. The floor planning, placement and routing of the netlist ensures that the overall size for the entire chip does not exceed by 2.3 square millimeters. The results obtained for ALMS adaptive filtering techniques using pipelining, parallel processing, low power techniques and floating point architectures have proven that the complexities in the industrial applications can be met if the design is implemented on ASIC.

Micro electro mechanical systems (MEMS)also known as micro fabricated systems(MS) has evoked a greater interest in scientific and engineering communities. This is generally because of smaller size and better performance than other solutions, cost effective integration with electronics, large reduction in power consumption, etc…In this project SIMULATION OF HEART DISORDERS were detected using three equations such as FitzHugh-Nagumo equation, Landau-Ginzburg equation and Hermite-Quadratic element equation. We used the fourth order Hermite element for the complex landau-ginzburg equation because of less nonlinearit nonlinearites. We have used COMSOL MULTIPHYSICS for the simulations.

The progression and multiplications in Information and Communication Technology (ICTs) has prompted movement of learning past the customary classroom Face-to-Face (F2F) to various sorts of adapting, for example, Distance Flexible Learning (DFL), Electronic Learning (eLearning) and to all over and whenever known as Mobile Learning (mLearning). [1] The broad utilization of versatile innovations has brought about expanding enthusiasm for portable learning. [3] In this paper we investigate the difficulties the cell phones has on learning and further talks about the outline and execution of android based understudy learning apparatuses which is worked to upgrade learning . The proposed framework has numerous learning devices, for the most part the auspicious notice for various modules, for example, exercises due dates, exam alarm and discourse notice. Incorporated with MOODLE (course administration framework) to upgrade learning, it additionally has instructional exercise apparatus for understudies/guides to decrease paper work and superfluous workload on the mentors. Other learning instruments gave to students are exam timetable, college news, exchange gathering, college and general data benefit. This proposed framework's devices gives greater adaptability, portability and advantageous than eLearning mode which rises routine consideration regarding self-learning modules which may support student's abilities in learning.

Statistical Process Control (SPC) is the best choice to monitor software reliability process. It assists the software development team to identify and actions to be taken during software failure process and hence, assures better software reliability. In this paper we propose a control mechanism based on the cumulative observations of Interval domain data using the mean value function of Burr type XII model, which is Non-Homogenous Poisson Process (NHPP) based. The Maximum Likelihood Estimation (MLE) approach is used to estimate the unknown parameters of the model.

In general technologies in the field of education have a significant history. The focus of this study was to determine the level of computer use among the teaching staff at Princess Nora University in KSA. A total of 80 teaching staffs were participated in this study. Data was collected from academicians through a survey consisting of demographics variables, and level of computer use. Questionnaire results were analyzed quantitatively. Findings of the study showed that teaching staff at Princess Nora University generally had a high level of computer use. However, a in depth research is required, in order to investigate the factors affecting the use of computer technology among the teaching staff. As this study is limited to a particular setting and particular participants, further study is needed.

Internet of things is one of the rapidly growing fields for delivering social and economic benefits for emerging and developing economy. The field of IOT is expanding its wings in all the domains like medical, industrial, transportation, education, mining etc. Now-a-days with the advancement in integrated on chip computers like Arduino, Raspberry pi the technology is reaching the ground level with its application in agriculture and aquaculture. Water quality is a critical factor while culturing aquatic organisms. It mainly depends on several parameters like dissolved oxygen, ammonia, pH, temperature, salt, nitrates, carbonates etc. The quality of water is monitored continuously with the help of sensors to ensure growth and survival of aquatic life. The sensed data is transferred to the aqua farmer mobile through cloud. As a result preventive measures can be taken in time to minimize the losses and increase the productivity.

A page fault is a kind of delay, put forward by the system hardware on accessing of a page by a process in execution, which is plotted in the virtual memory, but not really stacked to the main memory. The set up which observes the interrupt is known as the CPU's memory management unit (MMU), whereas the exception handling program which tackles these interrupts is mainly a section of systems program kernel. During managing an interrupt, the systems program normally take attempts in making the needed page obtainable at the locale in physical memory, or aborts the process in a scenario of unauthorized memory retrieval. In this paper we have done a survey on different techniques to handling a page fault or an interrupt.