-
A Voltage Controlled DSTATCOM using Hybrid Renewable Energy DC Link VSI for Power Quality Improvement
Anupama S Kumar ; Surya Susan Alex
Electrical and Electronics Engineering
Year: 2016, Volume:3, Issue : 4
Pages: 1 - 6
The work deals with Distribution Static Compensator (DSTATCOM) working in voltage-control mode using photovoltaic (PV) array and Permanent Magnet Synchronous Generator (PMSG) based wind turbine for dc generation; forming hybrid renewable energy sources based dc-link voltage source inverter (VSI). PV is installed along with Perturb and Observe (P & O) maximum power point tracking (MPPT) method applied to dc-dc boost converter, in desire to generate the required dc voltage for one of the split dc capacitor. For the lower dc-link capacitor, required dc voltage is generated using PMSG based wind energy system which extracts maximum power from wind through switch mode rectifier, using simplified output maximization control. The effective combination of PV and wind along with their MPPT controls, eliminate the need of battery, pre-charge capacitor circuitry and dc-link voltage regulation control. It is observed that the DSTATCOM operates effectively providing balanced and sinusoidal source currents with unity power factor (UPF), in the presence of unbalanced and non-linear load. The reference voltages for shunt controller are extracted using instantaneous symmetrical component theory (ISCT) which provides advantages of both voltage control mode and current-control mode. This scheme is found to be advantageous in terms of providing uninterruptable reparations.
Read More...
-
Pedestrian Crossing Behaviour at Suchitra Junction on NH-44 Using Discrete & Continuous Model
Venkatesh ; A.Naga Saibaba; M Kameswara Rao
Civil Engineering
Year: 2016, Volume:3, Issue : 4
Pages: 7 - 12
In this paper, a brief practical review is presented on the statistical evidence showing the Pedestrian road safety is a key point of the transport road safety policy in urban areas. Pedestrians are vulnerable road users and despite their limited representation in traffic events, pedestrian involved injuries and fatalities are overrepresented in traffic collisions. This paper presents the findings from the examination of the pedestrian crossing behaviour in signalized crosswalks. The study took place in peak traffic hours, during the summer. The target of the study was to count the pedestrian crossing time and velocity for each crosswalk. Furthermore, the target was to identify the illegal pedestrian crossing with red traffic light, criticize their behaviour and propose remedial actions. The traffic planners mostly give stress on motorized mode of movement .All kinds of steps are taken for development of roads in terms of safety, speed or time interval at intersections in case of motorized vehicle. But in present traffic condition, the non-motorized mode of traffic is also increasing. The pedestrians and bicyclists are occupying the track of motorized vehicle as no separate grades are provided for them. It leads to traffic congestion as well as the safety factor of pedestrian is at stake. According to HCM 2010, for this heterogeneous traffic, we can’t just increase the level of service by developing the quality of roads for vehicles Steps have been taken to reclaim pavement for pedestrians by removing the encroachment on footpath. A study was carried out on Suchitra Junction where about footpath surrounding it and separated from road by divider along road side. The users were asked to answer the questions the quality of service provided by the system in terms of questionnaire formed .The format of questionnaire was based on the factors that user perceive. From the ratings, an analysis was carried out to find the level of service and waiting time of the interviewers .The analysis consisted of five factors as safety, Comfort level vendors encroachment ,accessibility and side walk performance, climate condition. The analysis was done on discrete continuous model and the area was categorized to a specific level of service out of 6 degrees of level of service (LOS).It is difficult to have LOS value for an area based on perception as it varies from person to person. So the trail is made to its best possible value of LOS depending on majority of the majority of user’s perception.
Read More...
-
Efficient Sound Source Localization based on Estimation using Time Difference of Arrival(For Blind)
SAKSHI SRIVASTAVA ; URVASHI RAHUL SAXENA
Computer Science and Engineering
Year: 2016, Volume:3, Issue : 4
Pages: 13 - 18
The process or activity of accurately ascertaining blind's position and planning and following a route in an internal system. Source Localization has been one of the frank setbacks in countless spans, encompassing sonar, radar, teleconferencing or videoconferencing mobile phone locale discovering exploration and globe positioning arrangements localization of earthquake epicenters and underground blasts, microphone arrays, robots micro seismic events in mines sensor webs, tactile contact in novel palpable human–computer interfaces talker pursuing surveillance and sound basis tracking. Our aim is real period elevated accuracy wideband sound basis localization in outdoor cases. For localizing such sound origins, a far-field assumption is usual. Allocating a localization arrangement in suitable higher height point of a localization zone frequently reduces the reverberation degree, exceptionally for hovering objects. Additionally countless such sound basis signals are wideband signals. Moreover, outdoor elevated accuracy sound basis localization in disparate climates needs exceedingly sensitive and elevated presentation.
Read More...
-
Operational Effects of Critical Gaps and Turning Movements on NH-44 In Ranga Reddy District
Gummadi Chandu ; Eshrak; M.Kameswara Rao
Civil Engineering
Year: 2016, Volume:3, Issue : 4
Pages: 19 - 24
In this paper, a brief practical review is presented on U-turns have been considered among the most hazardous locations on highways. The maneuvering of the driver at these locations is quite complex and risky. The behavior of the driver when turning is governed by the gap acceptance concept. In this study, the driver’s gap acceptance behavior at U-turn median openings was studied. U-turn median openings in City were investigated. Data was collected by video/manual recording. Two models were developed in this study. The first model estimated the time gap accepted by the driver. The second model calculated the turning function, which was used to estimate the probability of accepting gaps. Results showed that male drivers tended to accept shorter gaps than female drivers. Also, younger drivers were more likely to accept shorter gaps than older ones. The waiting time was also found to affect the gap acceptance behavior of the drivers. Drivers tended to accept shorter gaps after longer waiting times. Establishment of un-signalized median openings has expanded in numerous urban districts of cities in India. The thought process behind this establishment is to take out issues connected with illicit U-turns occurring at crossing points and other transportation facilities near these median openings on multi-lane urban streets. Gap Acceptance concept of U-turn drivers is an imperative angle at un-signalized median openings for deciding limit of accidents. Critical Gap structures the sole parameter in Gap acceptance models for assessing U-turns at median openings. Estimation of critical gaps for U-turn vehicles at median openings under mixed traffic conditions have not been addressed until today. U-turn at midblock median opening is frequently provided in developing countries to facilitate the local access. Movement capacity of such U-turn is of interest for deciding the necessary traffic management. HCM 2010 contains the methodology for U-turn capacity estimation, which is based on gap acceptance theory and assumption of major traffic headway distribution. This project evaluated the gap acceptance capacity model and proposed an adjustment method of the Data collection at a U-turn.
Read More...
-
Performance of OLSR in Manet using Omnetpp
Baljeet Kaur ; Jaswinder Singh
Computer Science and Engineering
Year: 2016, Volume:3, Issue : 4
Pages: 25 - 28
In Today, user wants the wireless network anywhere. The wireless communication devices are transmitters, receivers and various smart antennas. These smart antennas may be any kind and the number of nodes can be fixed or mobile. The term node is referred to as nodes which can move arbitrarily in any direction. The wireless mobile nodes when collected at an instant are forming a temporary network without use of any re-existing network. The Ad-hoc routing protocols have number of types which are useful during the time of connectivity to form network. Routing protocols for mobile Ad-hoc networks have to face the challenge of changing the network topology by changing the number of mobile nodes. Scalability is an open issue in all routing protocols. In this review paper, there are observations of OLSR protocol regarding the scalability comparison of the Optimized Link State Routing (OLSR) by varying the number of nodes. The simulation is done by using OMNET++ by taking end to end delay, throughput and Packet delivery ratio as performance metrics.
Read More...
-
Reliability Analysis of Vertical Broaching Machine by Fault Tree Analysis (FTA) Method
Swapnil Herwade ; A.M.Naniwadekar
Mechanical Engineering
Year: 2016, Volume:3, Issue : 4
Pages: 29 - 35
Reliability Analysis by Fault Tree Analysis (FTA) method plays crucial role in design process. FTA is a graphical representation of major failure occurs in a machine, their causes of failures and potential countermeasures. This paper deals with a reliability analysis of vertical broaching machine by FTA method. Qualitative and quantitative analysis helps to identify the critical design parameters and maintenance suggestions.
Read More...
-
Comparison of Seismic Performance of RC Flat Slab with and without Drop Panel For Steel Bracing experimental Analysis of Hydraulic Shaper Machine
Dakshayani S ; Chaithra N; Ruchir A J
Civil Engineering
Year: 2016, Volume:3, Issue : 4
Pages: 36 - 41
One of the lateral load opposing frameworks in multi-storey structures is Steel brace frame. The resistance of the structure which enhances against horizontal forces by expanding its stiffness and stability is Steel bracing system in RC multi-storey building is conservative, simple to set up, involve less space and give obliged quality and inflexibility. Flat slab reinforced buildings have exhibit many dominances over conventional type of beam column building. However, the effectiveness of structure in flat slab construction is inferior in performance under earthquake loading. Flat slab requires the simple formwork which usually result in an economical construction. In present study, a G+9 storey building is analysed for seismic zone IV as per IS 1893: 2002 using ETABS software. Flat slab is used by providing drop panels and peripheral beam. For all models parameters are kept constant. The effect of the distribution of the steel bracing along with the flat slab RC frame on the seismic performance of the building is studied. The performance of the building is evaluated in terms of storey displacement, storey shear, story drifts and slab stresses. The percentage reduction in lateral displacement along X direction is tabulated. By providing drop panels the slab stress is reduced on structure compared to RC bare frame. Hence it is concluded that the use of steel bracing with flat slab in construction resists the lateral forces for many vulnerable conditions.
Read More...
-
Joint Gender and Face recognition System for RGB-D images with Texture and DCT Features
JESNY ANTONY ; Prasad J.C.
Computer Science and Engineering
Year: 2016, Volume:3, Issue : 4
Pages: 42 - 50
Gender and face recognition are one of the important challenge in various areas of security and surveillance. Joint Gender and face recognition system is devoted to the development of an automatic system capable to recognizing the faces using the facial and attribute features and to distinguish peoples gender by analyzing their faces on digital images using Discrete Cosine Transform (DCT) and Principal Component Analysis (PCA) features. Such systems can find application in different fields, such as robotics, human computer interaction, demographic data collection, video surveillance, online audience measurement for digital signage networks and many others. RGB-D image is used for face recognition as it contains more information than 2D image thus improves the accuracy. RISE algorithm is used to compute a descriptor from the facial image based on the entropy and saliency features. Geometric facial attributes are extracted from the color image then both the descriptor and attribute match scores are fused for face recognition. In order to increase the security of the system proposed a method to perform gender recognition after performing face recognition. Naive Bayes classifier is used to recognize the HOG features for gender recognition. The experimental results indicate that the gender recognition using DCT achieves higher accuracy on color images when compared with gender recognition using other methods.
Read More...
-
Special Class Extended Mean Corial Graphs
Dr. A. Nellai Murugan ; S. Sonia
MATHEMATICS
Year: 2016, Volume:3, Issue : 4
Pages: 51 - 55
Let G = (V,E) be a graphs with p vertices and q edges. An Extended Mean Cordial Labeling of a Graph G with vertex set V is a bijection from V to {-1,0,1} such that each edge uv is assigned the label (|f(u)+f(v)|)/2 where |x| is the least integer greater than or equal to x with the condition that the number of vertices labeled with 0 and the number of vertices labeled with 1 differ by at most 1 and the number of edges labeled with 0 and the number of edges labeled with 1 differ by almost 1. The graph that admits an Extended Mean Cordial Labeling is called Extended Mean Cordial Graph. In this paper, we proved that special graphs(umbrella), Q(n),(P_n:C_3) are Extended Mean Cordial Graphs.
Read More...
-
Living Conditions of Women Inmates in the Prisons of Jammu and Kashmir: A Concerned Issue
Dr. Neha Vij
Science & Humanities
Year: 2016, Volume:3, Issue : 4
Pages: 56 - 60
Crime and punishment are gendered concepts. The types of crime in which women and men engage are dissimilar and their rate of indulging in criminal activities varies considerably. Female offenders seem to experience each stage of the criminal justice system differently than do men. Women are often handled differently from men by the correctional system and it is incorrect to assume that the experience of imprisonment is identical for both women and men. Men and women adapt to the prison environment differently from each other. It is therefore imperative to look into at its depth as to factors lead to women and men perceiving the prison institutions differently. The endeavor of this paper is to understand the same in J&K Jails.
Read More...
Abstract
