Evaluation of Story Drift under Pushover Analysis in Reinforced Concrete Moment Frames

The accurate prediction of story drift and its distribution along the height of the structure is very critical for seismic performance evaluation since the non-structural damage is directly related to the story drift. Pushover analysis is an accepted method for seismic evaluation of existing structures as well as performance-based design of new structures. Regarding assumptions and limitations in pushover analysis, there is a need to estimate the error that would affect the accuracy of story drift. This paper investigates the validity of pushover analysis to predict story drift under different lateral load patterns. For this purpose, several reinforced concrete moment frames with different heights were analyzed using pushover and nonlinear time history analyses and obtained results were compared to evaluate the error level

Comparative Study of MFCC Feature with Different Machine Learning Techniques in Acoustic Scene Classification

The task of labeling the audio sample in outdoor condition or indoor condition is called Acoustic Scene Classification (ASC). The ASC use acoustic information to imply about the context of the recorded environment. Since ASC can only applied in indoor environment in real world, a new set of strategies and classification techniques are required to consider for outdoor environment. In this paper, we present the comparative study of different machine learning classifiers with Mel-Frequency Cepstral Coefficients (MFCC) feature. We used DCASE Challenge 2016 dataset to show the properties of machine learning classifiers. There are several classifiers to address the ASC task. In this paper, we compare the properties of different classifiers: K-nearest neighbors (KNN), Support Vector Machine (SVM), Decision Tree (ID3) and Linear Discriminant Analysis by using MFCC feature. The best of classification methodology and feature extraction are essential for ASC task. In this comparative study, we extract MFCC feature from acoustic scene audio and then extracted feature is applied in different classifiers to know the advantages of classifiers for MFCC feature. This paper also proposed the MFCC-moment feature for ASC task by considering the statistical moment information of MFCC feature

Mechanical Properties of Polyester Reinforced with Powdered Shells of the Snail Composites

Composites of unsaturated polyester has been found to be useful virtually in all aspects of life. This project work was carried out to investigate the properties of particulate snail shell reinforced unsaturated polyester matrix composites. The snail shell particulate was calcinated, pulverized and sieved to -75 µm. The composites were developed using predetermined varying filler content. For each of the developed composites, the mixture was missed thoroughly until homogenous paste was obtained and poured into the mould and was allowed to cure before removing from the mould. The developed composites were then characterized by flexural and wear tests. The result showed that better results can be obtained within 5-20 wt% reinforcement addition since 25-30 wt% tends to give weak results in all. The result also proved that properties of the developed composites were highly enhanced compared to the unreinforced polyester material. The optimum properties were observed at 20% filler content.&nbsp

Determining the Impact of TQM Principles on Strategic Performance

This research attempts to determine the impact of the principles of TQM on the strategic performance of the universities. This topic is of relatively important because TQM principles prioritize strategic performance indicators for the current research sample and its contribution to enhancing the University's viability, growth and competitiveness. Based on the above, a research model was developed to determine the nature of the relationship and the impact between TQM principles and strategic performance. The data was collected through a questionnaire distributed to 32 member of Cihan University Faculties. The data was analyzed by SPSS Software V.23

Optimal Sizing and Location of Shunt Capacitors in Medium Voltage Underground Power Cables: A Case of Minimum Cost

This paper introduces a method to determine optimal sizing and location of shunt capacitors in medium voltage Underground Power Cables or in distribution system. To execute this method, two models of standard branch and the Newton-Raphson method are also mentioned to analyze and determine values of bus voltage and currents going through lines in whole system. The EN 50160 standard is introduced to evaluate all operational parameters and propose solutions to reduce risks. In additionally, the cost function method is introduced basing on cost of purchasing compensative device, power loss in own compensators and whole system after compensating. By considering partial derivative of cost function with respect to variables, optimal sizing and location of shunt capacitors can be determined for all buses in the system. Analyzing the system by using the Newton-Raphson method in stable mode, all operational parameters are evaluated to see the benefit of placing capacitors in some criterions: reduce the current going through all lines and increase value of bus voltage in whole system. Theory research are verified by simulation results carried out in Matlab 2016 software

Fault diagnosis of induction motor using wavelets

Wavelet analysis is one the prime signal processing and data analysis techniques its ability to locate fault at exact duration is one of its added advantage in comparison to Fast Fourier transform in which time information of signal is lost .In addition to this FFT has another disadvantage that at low loads sidebands converges so it becomes difficult to detect the faults. STFT was proposed as a solution to resolution problem but its limited time-frequency resolution capability, because the uncertainty principle. Low frequencies can be scarcely depicted with short window that’s why wavelet theory is yet the most powerful tool in data analysis of signals. This paper presents a study of fault detection of induction motor like broken rotor bars stator short circuits using wavelets envelope analysis in which a signal is converted into approximate and detail signals thus removing the fundamental current which hides the fault harmonics present during faults

Real-Time Digital Simulators: A Comprehensive Study on System Overview, Application, and Importance

The multifarious improvements in computational and simulation tools have brought tremendous progress in the field of designing, testing and analyzing technologies. In this paper, the technological aspects and the concept of modern real-time digital simulators are presented. The real-time simulator functions in real time, thus it produces continuous output that realistically represents the conditions of a real system. Also, in a real-time simulator the user can test physical devices. Therefore, it is of great importance to understand the features and roles of the advanced simulator technologies. Also, User-friendly system interface, easy application in system design and testing, and most importantly cost effectiveness are the most desire features for implying these simulator into a research. Therefore, this paper summarizes all significant features by considering the above-mentioned facts of some most popular, globally, and commercially available simulator technologies. Real Time Digital Simulators (RTDS), OPAL-RT, Network Torsion Machine Control (NETOMAC), dSPACE, Real-Time solution by MathWorks (xPC target, Real-Time Windows target), Power_system Online_simulation Unveil Your Analysis (POUYA) Simulator and Typhoon HIL Simulator are discussed in this review paper based on the accessibility of information. A summarization of these simulators’ background, hardware, software and communication protocols are presented. Applications of these above-mentioned simulators are also added to understand the potentials of these simulators

A Survey on proxy re-encryption method using cloud computing

In many of the fields for the storage purpose we use the cloud computing. In cloud computing many technics are used for the storage and security. Cloud computing is mainly used for the security purpose to make efficient. Many of the clients can store and activate through offline mode so these papers explained about the newly technologies that used and experimented by the authors. By using the different types of technologies the quality and quantity of performances increases. By the execution of corresponding security techniques many cloud providers are safeguarded data’s, images etc. Security is the most important performance that plays a vital role in cloud computing

Analysis of Some Checkpointing Schemes for Distributed Mobile Computing Systems

There exist mobile nodes in a distributed system, which arises some new issues like mobility, disconnections, low bandwidth of wireless channels, limited battery power capacity and lack of reliable stable storage on mobile nodes, that need proper handling when we design a checkpointing algorithm for distributed systems. It is not easy to predict whether the system will prolong to perform throughout or till approved time. Checkpoint is defined as a specify state in a program at which normal process is disrupted typically to maintain the information of status mandatory to allow renewal of processing at a later time in issue of a failure. This paper gives a summary of checkpointing strategies for mobile networks which are categories on the basis of quality of service of wireless networks, based on mobile agents, considering the mobility of MHs and transmission of checkpoints. We also represent a survey of some checkpointing algorithms for distributed systems

Adaptive undivided wheel opener

Adaptive undivided wheel opener is a special purpose tool used to tighten and loosen all the nuts of wheel at the same time with less effort. It uses bevel gear assembly for transmitting torque to the nuts and lock – nut arrangement have been used to make the system adjustable to the required pitch length. The most desired advantage is that the total time consumed in the process is very less. It can open and refit the wheel with same tool. Tool is simple in design and easily portable along with vehicle