Automatic Paint Defect Detection and Classification of Car Body

Automatic Paint Defect Detection and Classification of Car Body

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Part of #Automatic Paint Defect Detection and Classification of Car Body# :

Publishing year : 2011

Conference : Seventh Conference on Visual Machine and Image Processing

Number of pages : 6

Abstract: Nowadays on line automation plays an important role in industrial quality management. This paper proposes a new computer vision system for automatic painted car inspection in the context of quality control inindustrial manufacturing. In most world automotiveindustries, the inspection process is still largely performed by human vision, and thus is insufficient and costly. Therefore, automatic paint defect inspection is required to reduce thecost and time waste caused by defects. This new system analyzes the images sequentially acquired from the body of the body to detect various types of defects. Initially, defects are detectedand localized by using a local distribution of the local binarypattern (LBP) and the rotation invariant measure of the localvariance (VAR) operator, and next, detected defects are classified into different defect types using the Bayesianclassifier. The results show that this method can detectdefects and classify them with high accuracy. Because of itssimplicity, online implementation is possible as well.

NONLINEAR BEHAVIOUR OF SUSPENDED ZIPPER BRACED FRAMES

NONLINEAR BEHAVIOUR OF SUSPENDED ZIPPER BRACED FRAMES

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Part of #NONLINEAR BEHAVIOUR OF SUSPENDED ZIPPER BRACED FRAMES# :

Publishing year : 2011

Conference : 6th International Conference on Seismology and Earthquake Engineering

Number of pages : 9

Abstract: This study investigates the effectiveness of one of the lateral load resisting systems known as suspended zipper braced frame. Chevron bracing system is prone to buckling of the first story compression brace while the tension member is still in its linear stage of axial behavior when the frame is imposed with lateral load. This phenomenon produces an unbalanced vertical force imposed on the top beam leading to a concentration of story drifts in one story. Zipper is a member that delivers this force to the upper braces and makes them help the first story braces in resisting lateral displacement leading to the distribution of drifts over the height. The problem of this system is the simultaneous buckling of all compression braces. Suspended zipper frame is the same zipper frame but with strong members in the last story resulting in further ductility of the frame. In this paper, the suspended zipper frame is compared with equivalent chevron braces in 3-9 and 20 story frames in terms of the ductility and weight of the frame. This comparison shows the more durability of the suspended bracing system in all models and its less weight in 3 and 9 story models.

BIODEGRADATION OF PHENOL USING FREE AND IMMOBIIZED ALCALIGENES FAECALIS

BIODEGRADATION OF PHENOL USING FREE AND IMMOBIIZED ALCALIGENES FAECALIS

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Part of #BIODEGRADATION OF PHENOL USING FREE AND IMMOBIIZED ALCALIGENES FAECALIS# :

Publishing year : 2009

Conference : First International Conference on Wastewater Recycling and Water Recycling, Technologies and New Discoveries

Number of pages : 6

Abstract: Biological degradation of phenol by Alcaligenes faecalis with high biodegradation activity and high tolerance was investigated at 25C. Phenol could be used by the bacteria as the only carbon and energy sources. The cell growth and substrate degradation of phenol as single substrates for Alcaligenes faecalis in batch cultures (shaking flasks) were investigated at different initial phenol concentrations. Phenol was observed to be an inhibitory compound. Particularly, when free cells grew in a high concentration of phenol, the inhibition of substrate was observed and the higher the phenol concentration, the longer was the lag period. The lag time and total required time for phenol biodegradation were significantly reduced by immobilized cells due to the improvement of cell resistance against high phenol concentration by cell immobilization compared to free cells. Required time to completely degrade the initial phenol of 700 and 1000 ppm by free and immobilized cells is 56, 101, and 35, respectively 72 hours. These results indicate that immobilized Alcaligenes faecalis has a good potential application in the treatment of phenol-containing wastewater.

Optimal placement of hybrid renewable energy system for minimum real power loss in radial distribution system: A case study

Optimal placement of hybrid renewable energy system for minimum real power loss in radial distribution system: A case study

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Part of #Optimal placement of hybrid renewable energy system for minimum real power loss in radial distribution system: A case study# :

Publishing year : 2015

Conference : Twentieth Power Distribution Conference

Number of pages : 7

Abstract: The developments in the technology of distributed generation and the use of such technologies in distribution networks provided the opportunity to benefit from the use of these sources to improve the exploitation from distribution networks some of the benefits of distributed generation sources are loss Reduction, voltage profile improvement, increasing network reliability, …. To achieve these goals, the problem of allocation, meaning capacity determination, source value and location is very important. In distribution networks, especially in Iran, due to the inefficiency in the loss-reduction, voltage amplitude and voltage balance of the voltage profile, a study on DG source's effects to improve the voltage profile amplitude and disbalance and finally give Optimal allocation in reaching goals is a vital point. In this paper, our goal was to optimally allocate a hybrid Renewable Energy System to Storage System sources. In order to improve the amplitude and voltage unbalance in the system. In other words, our goal was to deliver the voltage amplitude of buses to acceptable rates, loss reduction and also to reduce voltage unbalance with optimal allocation and DG sources. It is clear that when the sources are allocated in order to increase the voltage amplitude and also decrease the disbalance, loss will decrease due to improvement in voltage profile and disbalance decrease. So, in this paper, the optimal placement and sizing of a renewable hybrid energy system (Wind / PV / Battery) is performed in the IEEE 33 and 69 bus test system and part of the distribution network in Tehran.

Synthesis and Characterization of Nanostructured -Al12Mg17 Intermetallic Particles By Mechanical Milling

Synthesis and Characterization of Nanostructured -Al12Mg17 Intermetallic Particles By Mechanical Milling

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Part of #Synthesis and Characterization of Nanostructured -Al12Mg17 Intermetallic Particles By Mechanical Milling# :

Publishing year : 2010

Conference : Second National Conference on Nanotechnology and Nanotechnology

Number of pages : 7

Abstract: Pre-alloyed-Al12Mg17 intermetallic compounds were milled in a precritor ball mill to understand the structural evolution during mechanical milling (MM). The phases evolution and microstructure were characterized by X-ray diffraction (XRD). The crystalline size and internal strain were evaluated by XRD patterns using Williamson-Hall and Scherrer methods. Scanning electron Microscopy (SEM) was used to study powder morphology, particle size and distribution. The results demonstrate that, due to the brittleness of the starting material, the -Al12Mg17 phase already shows a strong grain size decrease in the first milling stages due to repeated fracturing of the powder particles. With increasing milling time, a submicron intermetallic powder with nanocrystalline grain size in the range of ~ 30 and ~ 100 nm (from X-ray diffraction, XRD) and particle size in the range of ~ 200 nm and ~ 1 m (from SEM micrographs ) Is formed.

Validation of Methods to Calculate Gas-Oil Relative Permeability Using Capillary Pressure Data from South Pars Reservoir

Validation of Methods to Calculate Gas-Oil Relative Permeability Using Capillary Pressure Data from South Pars Reservoir

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Part of #Validation of Methods to Calculate Gas-Oil Relative Permeability Using Capillary Pressure Data from South Pars Reservoir# :

Publishing year : 2010

Conference : Fourteenth International Conference on Oil, Gas and Petrochemicals

Number of pages : 12

Abstract: Gas oil relative permeability is the most important parameter in the simulation of fluid flow in gas condensate reservoirs. Experimental measurements of the relative permeability of these core samples with a regular shape which is costly and time consuming. On the other hand, the experimental data on relative pemeability may also have a significant error and uncertainty in many cases. The source of uncertainty is that the input to the numerical simulator is uncertain and inaccurate; It can be reduced if the number of input parameters is reduced, especially if the parameters with the greatest uncertainty are avoided. It is possible to impose only capillary pressure data, because relative permeability can be predicted consistently using specific models. The present methods which are based on capillary pressure considered porous media as a capillary tubes; They are indeed mercury flow paths that are filled during MICP test at a certain value of capillary pressure.

Review of eAccessibility Evaluation Tools

Review of eAccessibility Evaluation Tools

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Part of #Review of eAccessibility Evaluation Tools# :

Publishing year : 2007

Conference : Second International Conference on Electronic Commerce and World Trade

Number of pages : 6

Abstract: "The customers of today's global networked economy have higher demands and expectations from their financial institutions. Online banking greatly enhances the convenience of banking services, especially by making many services accessible virtually anywhere." In current population there are significant numbers Visually impaired. The Web is an information medium, but too many web designers still think of it as purely visual media, and are unaware even that visually impaired people can access the web. These people tend to be excluded from using the World Wide Web as a mechanism for providing services and facilities. -This issue is so much concern that governments and specialized bodies such as Royal National Astronomical Institute (RNIB) have produced recommendations. This paper reports on eAccessibility
level of online banking services. The accessibility test was conducted according to Web Content Accessibility Guidelines (WCAG 1 .O) Checkpoints of Priority 1, 2 and 3 by W3C using Bobby. The research identified that despite the standards set by international agencies, many websites still lack access.

ARCHITECTURAL ELEMENTS OF SYSTEMS KAHRIZ IN ORDUBAD

ARCHITECTURAL ELEMENTS OF SYSTEMS KAHRIZ IN ORDUBAD

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Part of #ARCHITECTURAL ELEMENTS OF SYSTEMS KAHRIZ IN ORDUBAD# :

Publishing year : 2011

Conference : International Conference on Traditional Knowledge of Water Resources Management

Number of pages : 5

Abstract: Being in the structure of the Nakhchivan Autonomous Republic, Ordubad is one of the oldest dwellings that hold the Middle Ages' city structure in itself. River Ordubad runs through the territory of the city dividing the city into two parts – Sarshahar and Ambaras. Under feudalism the city center was considered the place called Gala which was located on the right side of the Ordubad River. Afterwards, the center of Ordubad was moved to the place called Juma Masjid which was located on the left side of the river. After the movement of the area of the city was systematically reconstructed in the Middle Ages town construction. Being the center Juma Masjid The city was built in the south-west direction. The city square and the district squares are joined by narrow roads. The districts consist of small squares, dwelling houses and small mosques built in narrow streets going to the squares, the mosque built in the square, the two-plane trees and underground water coming out to the earth's surface. Ordubad is rich in historic architectural monuments. The architecture of the cannon (underground water supply) occupies a special place between these monuments. For providing the inhabitants of the Ordubad with water, the Kahriz system was constructed in the area of the city. The Kahriz systems are constructed in dwellings have some functions: 1. they provided the water of an encircled city in old times; 2.during the hot summer months the auspicious microclimate is revealed by the karship running through the gardens and districts; 3. in the dry summer months, the inhabitants water the plantations by the kareish etc. The Kahriz of Ordubad resembles the cobweb. Kahriz spheres passing through 8-10 meters in the gardens come out to the earth's surface in other yards and districts. The inhabitants use the water to come out to the earth's surface efficiently. The damage to the yards is by no means complete, there is filling of the ponds in the gardens and is passed to the neighbor's gardens, or the plantations are watered. To go down the area of the Kahrizas for having water sewage has been excavated. Forty stepps have been constructed over the canyon passing through deep layers in the gardens. The architecture of the forty-story architecture is different in its variety. These cells have been built in the form of frowned arch and dome of burnt bricks, mountain stones, river stones. The inhabitants use the cells both for having water and for keeping food. Besides providing the water needs of the inhabitants, the underground water supply of Ordubad is a valuable architectural monument. The karmic is not only mainly for taking water, but also the result of material-culture. This topic is explained in detail in the paper

Estimation the Scour Depth Downstream of Block Ramps Using ANN and ANFIS

Estimation the Scour Depth Downstream of Block Ramps Using ANN and ANFIS

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Part of #Estimation the Scour Depth Downstream of Block Ramps Using ANN and ANFIS# :

Publishing year : 2013

Conference : International Conference on Civil Engineering, Architecture and Sustainable Urban Development

Number of pages : 12

Abstract: Local scouring means the removal of bed rivers, which is caused by changing the flow pattern due to the existence of hydraulic structures. The downstream of transverse structures (such as check dams, rock chutes and block ramps) are usually located in stilling basins that are scarred by scouring. Block ramps are restoration structures whose ramps are armored by blocks to rehabilitate the bedrocks. River water issues can be preserved using a block ramp. Moreover, large amounts of energy are dissipated due to a block ramps head difference. Therefore, the block ramps have been used rather drops and sills recently. In addition, the hydraulic jump that takes place in the downstream of the block ramps can be an increasable factor of scour depth. In this study, the scouring depth in the stilling basin downstream of the block ramps using ANN and ANFIS are investigated. Consequently, the soft computational methods are compared with experimental and statistical methods that were performed by Pagliara and Palermo. High correlation coefficient and the small amount of error evaluation criteria show better agreement between ANN and ANFIS methods.

Comparison between Agile and Traditional software development methodologies

Comparison between Agile and Traditional software development methodologies

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Part of #Comparison between Agile and Traditional software development methodologies# :

Publishing year : 2014

Conference : Second National Conference on Applied Research in Computer Science and Information Technology

Number of pages : 9

Abstract: This paper is a review of research on the features of agile and heavy (traditional) software development methods and comparisons between them based on: Approach, Success Measurement, Project Size, Management Style, Perspective to Change, Culture, Documentation, Emphasis , Cycles, Domain, Upfront Planning, Return on Investment and Team Size. The important difference between agile and heavy methods is adaptability for project changes. In agile methodologies, changes are easy but heavy methods are static and do not adapt with changes. Also in this paper there is the use of each group of methodsologies and how they can work together two groups. In addition, some types of heavy and agile methods have been described.